CN107339203A - A kind of stabilized pressure pump - Google Patents

Abstract

The invention relates to a pressure stabilizing pump, which includes a pump body, a low-pressure fluid valve and a high-pressure fluid valve. The pump body has a first low-pressure fluid inlet, a second low-pressure fluid inlet, a first high-pressure fluid outlet and a second high-pressure fluid outlet; The fluid valve has a three-way low-pressure valve body, a first low-pressure fluid connector and a second low-pressure fluid connector; the high-pressure fluid valve has a three-way high-pressure valve body, a first high-pressure fluid connector and a second high-pressure fluid connector. The three-way low-pressure valve body is respectively connected to the first low-pressure fluid connector and the second low-pressure fluid connector through transition fit and laser welding or interference fit; the three-way high-pressure valve body is respectively connected to the first high-pressure fluid connector and the second high-pressure fluid connector. Fluid connections are joined by transition fit and laser welded or interference fit. The low-pressure fluid valve and the high-pressure fluid valve of the pressure stabilizing pump of the present application are assembled from multiple components. If the low-pressure fluid valve or the high-pressure fluid valve is damaged, only the damaged components need to be replaced, and there is no need to replace the entire set.

Description

a regulator pump

technical field

The invention relates to the technical field of pumps, in particular to a pressure stabilizing pump, which is applied in the medical field.

Background technique

Medical water jet is a kind of surgical equipment that uses high-pressure water jet technology to selectively cut human tissue, can accurately protect blood vessels and nerves, and realize minimally invasive surgery. Medical water jet has been widely used in trauma surgery, otolaryngology, etc. Surgery, maxillofacial surgery and other surgical operations. The pressure stabilizing pump is one of the core parts of the medical waterjet design. The stabilizing pump includes a single piston chamber and a double piston chamber. At present, the pressure stabilizing pump with double piston chambers is commonly used. The switching of the dual piston chambers is realized by means of electromagnetic control valves and other devices. , complex structure and high cost. However, the structure of the current stabilizing pump is complicated. When the stabilizing pump is damaged, the whole set of the stabilizing pump must be replaced.

Contents of the invention

Aiming at the deficiencies in the prior art, the object of the present invention is to provide a stabilizing pump.

In order to solve the above technical problems, the present application discloses a pressure stabilizing pump, which is characterized in that it includes: a pump body with a first low-pressure fluid inlet, a second low-pressure fluid inlet, a first high-pressure fluid outlet, a second high-pressure fluid outlet, The first piston chamber and the second piston chamber, the first low-pressure fluid inlet and the first high-pressure fluid outlet communicate with the first piston chamber, and the second low-pressure fluid inlet and the second high-pressure fluid outlet communicate with the first piston chamber. The two piston chambers are connected, and the first piston chamber and the second piston chamber are respectively provided with piston structures; the low-pressure fluid valve includes a three-way low-pressure valve body and a first low-pressure fluid connector connecting the three-way low-pressure valve body and a second low-pressure fluid connection, the first low-pressure fluid connection and the second low-pressure fluid connection are respectively connected to the first low-pressure fluid inlet and the second low-pressure fluid inlet; and a high-pressure fluid valve, located at the low-pressure fluid valve One side of the three-way high-pressure valve body and the first high-pressure fluid connector and the second high-pressure fluid connector connected to the three-way high-pressure valve body, the first high-pressure fluid connector and the second high-pressure fluid connector respectively connecting the first high-pressure fluid outlet and the second high-pressure fluid outlet; wherein, the three-way low-pressure valve body is respectively connected to the first low-pressure fluid connector and the second low-pressure fluid connector through transition fit and laser welding or Interference fit connection, between the first low-pressure fluid connector and the first low-pressure fluid inlet and between the second low-pressure fluid connector and the second low-pressure fluid inlet are connected by transition fit and laser welding or interference fit, the The three-way high-pressure valve body is respectively connected to the first high-pressure fluid connector and the second high-pressure fluid connector through transition fit and laser welding or interference fit, and the first high-pressure fluid connector is connected to the first high-pressure fluid outlet. And the connection between the second high-pressure fluid connection piece and the second high-pressure fluid outlet is connected through transition fit and laser welding or interference fit.

According to an embodiment of the present application, the above-mentioned three-way low-pressure valve body has a first low-pressure fluid end, a second low-pressure fluid end, and a low-pressure fluid inlet end, and the first low-pressure valve core of the first low-pressure fluid end can accommodate The accommodating space and the second low-pressure spool accommodating space at the end of the second low-pressure fluid communicate with the low-pressure fluid inlet channel at the inlet end of the low-pressure fluid respectively; the first low-pressure fluid connector and the second low-pressure fluid The connectors respectively have a first connection end and a second connection end, the first connection end of the first low-pressure fluid connector is connected to the first low-pressure fluid end of the three-way low-pressure valve body, and has a The sealed space communicated with the first low-pressure spool accommodating space, the second connection end of which is connected to the first low-pressure fluid inlet, and has a low-pressure fluid passage connecting the sealed space and the first low-pressure fluid inlet; The first connection end of the second low-pressure fluid connector is connected to the second low-pressure fluid end of the three-way low-pressure valve body, and has a sealed space communicated with the second low-pressure valve core accommodating space, and its second The connecting end is connected to the second low-pressure fluid inlet, and has a low-pressure fluid channel communicating with the sealed space and the first low-pressure fluid inlet.

According to an embodiment of the present application, the first low-pressure valve core accommodation space accommodates the first low-pressure valve core and the first low-pressure spring, and the first low-pressure valve core abuts against the first low-pressure valve core accommodation space. The side wall at one end, the first low-pressure spring abuts between the first low-pressure valve core and the side wall at one end of the sealed space; the second low-pressure valve core accommodating space accommodates the second low-pressure valve core and The second low-pressure spring, the second low-pressure spool abuts against the side wall at one end of the second low-pressure spool accommodating space, the second low-pressure spring abuts against the second low-pressure spool and the seal Between the side walls at one end of the space.

According to an embodiment of the present application, the above-mentioned first low-pressure fluid end portion and the second low-pressure fluid end portion respectively have connection protrusions, and the first connection ends of the first low-pressure fluid connection piece and the second low-pressure fluid connection piece respectively There is a connection groove, and the connection protrusions of the first low-pressure fluid end and the second low-pressure fluid end are respectively arranged on the connection of the first connection end of the first low-pressure fluid connection and the second low-pressure fluid connection. Groove; the second connection end of the first low-pressure fluid connection and the second low-pressure fluid connection has a connection protrusion, and the second connection end of the first low-pressure fluid connection and the second low-pressure fluid connection The connecting protrusions are respectively arranged on the first low-pressure fluid inlet and the second low-pressure fluid inlet.

According to an embodiment of the present application, the above-mentioned three-way low-pressure valve body includes a first valve body and a second low-pressure valve body screwed to the first low-pressure valve body, and the first low-pressure valve body has the first low-pressure valve body. A fluid end and a second low-pressure fluid end, the second low-pressure valve body has a low-pressure fluid inlet end.

According to an embodiment of the present application, an elastic sealing ring is provided between the first low-pressure valve body and the second low-pressure valve body.

According to an embodiment of the present application, the above-mentioned three-way high-pressure valve body has a first high-pressure fluid end, a second high-pressure fluid end, and a high-pressure fluid outlet end, and the first high-pressure valve core of the first high-pressure fluid end accommodates The accommodating space and the second high-pressure spool accommodating space at the end of the second high-pressure fluid communicate with the high-pressure fluid outlet channel at the outlet end of the high-pressure fluid respectively; the first high-pressure fluid connector and the second high-pressure fluid The connectors respectively have a first connection end and a second connection end, the first connection end of the first high-pressure fluid connector is connected to the first high-pressure fluid end of the three-way high-pressure valve body, and has a The first high-pressure spool accommodating space communicates with a sealed space, the second connection end of which is connected to the first high-pressure fluid outlet, and has a high-pressure fluid channel communicating with the sealed space and the first high-pressure fluid outlet; The first connection end of the second high-pressure fluid connector is connected to the second high-pressure fluid end of the three-way high-pressure valve body, and has a sealed space communicated with the second high-pressure valve core accommodation space, and its second The connecting end is connected to the second high-pressure fluid outlet, and has a high-pressure fluid channel communicating with the sealed space and the first high-pressure fluid outlet.

According to an embodiment of the present application, the above-mentioned first valve core accommodation space accommodates a first high-pressure valve core and a first high-pressure spring, and the first high-pressure valve core abuts against one end of the first high-pressure valve core accommodation space The side wall of the first high-pressure spring abuts between the first high-pressure valve core and the side wall at one end of the sealed space; the second high-pressure valve core accommodation space accommodates the second high-pressure valve core and the second high-pressure valve core. Two high-pressure springs, the second high-pressure valve core is in contact with the side wall at one end of the second high-pressure valve core accommodation space, and the second high-pressure spring is in contact with the second high-pressure valve core and the sealed space between the side walls at one end.

According to an embodiment of the present application, the above-mentioned first high-pressure fluid end and the second high-pressure fluid end respectively have connection protrusions, and the first connection ends of the first high-pressure fluid connector and the second high-pressure fluid connector respectively There is a connection groove, and the connection protrusions of the first high-pressure fluid end and the second high-pressure fluid end are respectively arranged on the connection of the first connection ends of the first high-pressure fluid connector and the second high-pressure fluid connector. Groove; the second connecting end of the first high-pressure fluid connecting piece and the second high-pressure fluid connecting piece has a connecting protrusion, and the second connecting end of the first high-pressure fluid connecting piece and the second high-pressure fluid connecting piece The connecting bumps are respectively arranged on the first high-pressure fluid inlet and the second high-pressure fluid inlet.

According to an embodiment of the present application, elastic sealing rings are provided between the above-mentioned three-way low-pressure valve body and the first low-pressure fluid connection piece and the second low-pressure fluid connection piece, and the first low-pressure fluid connection piece and the first low-pressure fluid connection piece Elastic sealing rings are provided between the fluid inlets and between the second low-pressure fluid connector and the second low-pressure fluid inlet, and the three-way high-pressure valve body is connected to the first high-pressure fluid connector and the second high-pressure fluid connector respectively. Elastic sealing rings are arranged between the first high-pressure fluid connector and the first high-pressure fluid outlet, and elastic sealing rings are respectively arranged between the second high-pressure fluid connector and the second high-pressure fluid outlet.

According to an embodiment of the present application, the pump body has two corresponding locking grooves, and the two locking grooves are arranged in a spiral.

Compared with the prior art, the present application can obtain the following technical effects:

The low-pressure fluid valve and the high-pressure fluid valve of the stabilizing pump of the present application are assembled by multiple components. When the stabilizing pump is damaged, only the damaged components need to be replaced instead of the entire set. In addition, the components are connected through transition fit and laser welding, interference fit or elastic sealing rings, which can effectively increase the sealing of the component assembly and prevent low-pressure fluid or high-pressure fluid from leaking from the component assembly. The pump body of the pressure stabilizing pump of the present application is provided with two opposite clamping grooves, so that the pump body clamping device is matched with the two clamping grooves of the pump body to be stably fixed on the medical equipment.

Description of drawings

FIG. 1 is a perspective view of a stabilizing pump according to a first embodiment of the present application.

FIG. 2 is a first cross-sectional view of the stabilizing pump according to the first embodiment of the present application.

FIG. 3 is an enlarged view of the dotted line in FIG. 2 .

FIG. 4 is a second cross-sectional view of the stabilizing pump according to the first embodiment of the present application.

FIG. 5 is an enlarged view of the dotted line in FIG. 4 .

Fig. 6 is a diagram of the first use state of the low-pressure fluid valve of the first embodiment of the present application.

Fig. 7a is a diagram of the second use state of the low-pressure fluid valve of the first embodiment of the present application.

Fig. 7b is a diagram of the first use state of the high-pressure fluid valve of the first embodiment of the present application.

Fig. 8a is a diagram of the second use state of the high-pressure fluid valve of the first embodiment of the present application.

Fig. 8b is a diagram of the third usage state of the low-pressure fluid valve of the first embodiment of the present application.

Fig. 9a is a diagram of the use status of the voltage stabilizing pump set in the medical equipment according to the first embodiment of the present application.

Fig. 9b is a partial cross-sectional view of the stabilizing pump installed in the medical equipment according to the first embodiment of the present application.

Fig. 10a is a first cross-sectional view of the stabilizing pump according to the second embodiment of the present application.

Fig. 10b is a second cross-sectional view of the stabilizing pump according to the second embodiment of the present application.

detailed description

A number of implementations of the present application will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the application. That is to say, in some embodiments of the present application, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

The terms "first", "second", etc. used herein do not specifically refer to a sequence or order, nor are they used to limit the present application, but are only used to distinguish components or operations described with the same technical terms. .

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, which are the perspective view, the first cross-sectional view, the enlarged view of the dotted line part in Fig. 2, the second The sectional view and the enlarged view of the dotted line in FIG. 4 ; The pump body 10 has a first low-pressure fluid inlet 101a, a second low-pressure fluid inlet 101b, a first high-pressure fluid outlet 102a, a second high-pressure fluid outlet 102b, a first piston chamber 103a and a second piston chamber 103b, and the first low-pressure fluid inlet 101a And the second low-pressure fluid inlet 101b is located at one side of the first piston chamber 103a and the second piston chamber 103b, and the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b are located at the other side of the first piston chamber 103a and the second piston chamber 103b. On one side, the first piston chamber 103a corresponds to and communicates with the first low-pressure fluid inlet 101a and the first high-pressure fluid outlet 102a, and the second piston chamber 103b corresponds to and communicates with the second low-pressure fluid inlet 101b and the second high-pressure fluid outlet 102b . Piston structures 1031 are installed in the first piston cavity 103a and the second piston cavity 103b respectively.

The low-pressure fluid valve 11 is connected to the first low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b, which includes a three-way low-pressure valve body 111, a first low-pressure fluid connector 112a, and a second low-pressure fluid connector 112b. The valve body 111 is connected to the first low-pressure fluid connector 112a and the first low-pressure fluid connector 112b, and the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b are respectively connected to the first low-pressure fluid inlet 101a and the second low-pressure fluid outlet 101b . The three-way low-pressure valve body 111 has a first low-pressure fluid end 1111, a second low-pressure fluid end 1112, and a low-pressure fluid inlet end 1113. The first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 of this embodiment are mutually Correspondingly, the low-pressure fluid inlet end 1113 is perpendicular to the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 . The first low-pressure fluid end 1111 has a first low-pressure spool accommodating space 1114, the second low-pressure fluid end 1112 has a second low-pressure spool accommodating space 1115, and the low-pressure fluid inlet end 1113 has a low-pressure fluid inlet passage 1116. The fluid inlet channel 1116 communicates with the first low-pressure spool accommodating space 1114 and the second low-pressure spool accommodating space 1115. The first low-pressure spool accommodating space 1114 is provided with a first low-pressure spool 113a and is located in the first low-pressure spool accommodating space 1115. The first low-pressure spring 114a on one side of the spool 113a and the second low-pressure spool accommodating space 1115 are provided with the second low-pressure spool 113b and the second low-pressure spring 114b located on the second low-pressure spool 113b.

The first low-pressure fluid connector 112a has a first connecting end 1121 and a second connecting end 1122, the first connecting end 1121 is connected to the first low-pressure fluid end 1111 of the three-way low-pressure valve body 111, and the second connecting end The portion 1122 is connected to the first low-pressure fluid inlet 101 a of the pump body 10 . The first connecting end 1121 has a closed space 1123. When the first connecting end 1121 is connected to the first low-pressure fluid end 1111, the closed space 1123 closes the first low-pressure spool accommodating space 1114, allowing the first low-pressure spool 113a and The first low-pressure spring 114a is located in the first low-pressure spool accommodating space 1114 and the closed space 1123, the first low-pressure spool 113a is close to the low-pressure fluid inlet channel 1116, the first low-pressure spring 114a is close to the first low-pressure fluid connector 112a, and the first One end of the low-pressure spring 114a abuts against the side wall of one end of the closed space 1123, and the other end of the first low-pressure spring 114a abuts against the first low-pressure spool 113a, so that the first low-pressure spool 113a abuts against the low-pressure fluid inlet passage 1116 The side wall at one end of the first low-pressure spool accommodating space 1114 blocks the communication between the low-pressure fluid inlet channel 1116 and the first low-pressure spool accommodating space 1114 . The second connection end 1122 of the first low-pressure fluid connection part 112a has a low-pressure fluid channel 1124, and the low-pressure fluid channel 1124 communicates with the sealed space 1123 and the first low-pressure fluid inlet 101a.

The structure of the second low-pressure fluid connector 112b of this embodiment is the same as that of the first low-pressure fluid connector 112a. The second low-pressure fluid connector 112b includes a first connection end 1121 with a sealed space 1123 and a low-pressure fluid passage 1124. When the first connection end 1121 of the second low-pressure fluid connector 112b is connected to the second low-pressure fluid end 1112, the sealing space 1123 restricts the second low-pressure valve core 113b and the second low-pressure spring 114b In the second low-pressure spool accommodating space 1115 , the low-pressure fluid passage 1124 communicates with the sealing space 1123 and the second low-pressure fluid inlet 101 b. The second low pressure spool 113b and the second low pressure spring 114b of this embodiment are arranged symmetrically with the first low pressure spool 113a and the first low pressure spring 114b located in the first low pressure spool accommodating space 1114, also representing the second low pressure valve The core 113b is close to the low-pressure fluid inlet channel 1116, and the second low-pressure spring 114b abuts between the second low-pressure valve core 113b and the side wall at one end of the sealed space 1123, and makes the second low-pressure valve core 113b abut against the low-pressure fluid inlet. The side wall of one end of the second low-pressure spool accommodating space 1115 of the flow channel 1116 is used to block the communication between the low-pressure fluid entering the flow channel 1116 and the second low-pressure spool accommodating space 1115 .

The high-pressure fluid valve 12 is located on one side of the low-pressure fluid valve 11, and is connected to the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b, which includes a three-way high-pressure valve body 121, a first high-pressure fluid connector 122a and a second high-pressure Fluid connection 122b. The three-way high-pressure valve body 121 is connected to the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b, and the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b are respectively connected to the first high-pressure fluid outlet 102a and the second high-pressure outlet 102a Fluid outlet 102b. The three-way high-pressure valve body 121 has a first high-pressure fluid end 1211, a second high-pressure fluid end 1212, and a high-pressure fluid outlet end 1213. In this embodiment, the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212 are mutually Correspondingly, the high-pressure fluid outlet end 1213 is perpendicular to the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212, the first high-pressure fluid end 1211 has a first high-pressure valve core accommodation space 1214, and the second high-pressure fluid end The part 1212 has a second high-pressure spool accommodating space 1215, and the high-pressure fluid outlet end 1213 has a high-pressure fluid outlet passage 1216, and the high-pressure fluid outlet passage 1216 is connected with the first high-pressure spool accommodating space 1214 and the second high-pressure spool accommodating space. 1215 is connected. The first high-pressure spool accommodating space 1214 is provided with a first high-pressure spool 123a and a first high-pressure spring 124a located on one side of the first high-pressure spool 123a, and the second high-pressure spool accommodating space 1215 is provided with a second high-pressure spring 124a. The spool 123b and the second high-pressure spring 124b located on one side of the first high-pressure spool 123b.

The first high-pressure fluid connection piece 122a and the second high-pressure fluid connection piece 122b have the same structure, and they respectively have a first connection end portion 1221 and a second connection end portion 1222 . The first connection end 1221 of the first high-pressure fluid connector 122a is connected to the first high-pressure fluid end 1211 of the three-way high-pressure valve body 121, and its second connection end 1222 is connected to the first high-pressure fluid outlet 102a; The first connection end 1221 of the high-pressure fluid connector 122b is connected to the second high-pressure fluid end 1212 of the three-way high-pressure valve body 121, and the second connection end 1222 thereof is connected to the second high-pressure fluid outlet 102b. The first connection ends 1221 of the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b respectively have a sealed space 1223, and the sealed space 1223 of the first high-pressure fluid connector 122a seals the first high-pressure valve core accommodating space 1214, The sealing space 1223 of the second high-pressure fluid connector 122b seals the second high-pressure valve core accommodation space 1215, so that the first high-pressure valve core 123a and the first high-pressure spring 124a are located in the first high-pressure valve core accommodation space 1214 and the sealing space 1223 , the second high-pressure valve core 123b and the second high-pressure spring 124b are located in the second high-pressure valve core accommodating space 1215 and the sealing space 1223 . The second connection ends 1222 of the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b respectively have a high-pressure fluid channel 1224, and the high-pressure fluid channel 1224 of the first high-pressure fluid connector 122a communicates with the sealed space 1223 and the first high-pressure fluid. The outlet 102a, the high-pressure fluid channel 1224 of the second high-pressure fluid connection piece 122b communicates with the sealed space 1223 and the second high-pressure outlet 102b. Wherein the first high-pressure valve core 123a is close to the high-pressure fluid channel 1224 of the first high-pressure fluid connector 122a, and one end of the first high-pressure spring 124a abuts against the side of one end of the first high-pressure valve core accommodating space 1214 close to the high-pressure fluid outlet channel 1216 One end of which abuts against the first high-pressure valve core 123a, so that the first high-pressure valve core 123a abuts against the side wall of one end of the sealed space 1223, blocking the communication between the high-pressure fluid channel 1224 and the first high-pressure valve core accommodating space 1214 ; Similarly, the second high-pressure spool 123b is close to the high-pressure fluid channel 1224 of the second high-pressure fluid connector 122b, and one end of the first high-pressure spring 124b abuts against the second high-pressure spool accommodating space 1215 close to the high-pressure fluid outlet channel 1216 The side wall at one end abuts against the second high-pressure valve core 123b, so that the second high-pressure valve core 123b abuts against the side wall at one end of the sealed space 1223, blocking the high-pressure fluid channel 1224 and the second high-pressure valve core accommodating space 1215 connectivity.

As can be seen from the above, the low-pressure fluid valve 11 of this embodiment is composed of a three-way low-pressure valve body 111, a first low-pressure fluid connector 112a and a second low-pressure fluid connector 112b, and the high-pressure fluid valve 12 is composed of a three-way high-pressure valve body 121, a second A high-pressure fluid connector 122a and a second high-pressure fluid connector 122b, so that the low-pressure fluid valve 11 and the high-pressure fluid valve 12 are easy to assemble, and when the low-pressure fluid valve 11 or the high-pressure fluid valve 12 is damaged, only the damaged element needs to be replaced , does not require replacement of the entire set.

Referring again to Fig. 2 and Fig. 4, the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of the present embodiment respectively have connecting protrusions 115, the first low-pressure fluid The first connecting end 1121 of the connecting piece 112a and the second low-pressure fluid connecting piece 112b respectively has a connecting groove 1125, when the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 are respectively connected to the first low-pressure fluid connecting piece 112a When connecting with the first connection end 1121 of the second low-pressure fluid connector 112b, the connecting bumps 115 of the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 are respectively arranged on the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112a. The connection groove 1125 of the first connection end 1121 of the two low-pressure fluid connectors 112b; When a low-pressure fluid connector 112a and the second connecting end 1122 of the second low-pressure fluid connector 112b are respectively connected to the first low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b, the first low-pressure fluid connector 112a and the second low-pressure fluid The connecting protrusions 1126 of the second connecting end portion 1122 of the connecting member 112b are respectively disposed on the first low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b.

Similarly, the first high-pressure fluid end portion 1211 and the second high-pressure fluid end portion 1212 of the three-way high-pressure valve body 121 of the high-pressure fluid valve 12 of this embodiment respectively have connecting protrusions 125, the first high-pressure fluid connecting piece 122a and the second high-pressure fluid end portion 125. The first connection ends 1221 of the two high-pressure fluid connectors 122b respectively have connection grooves 1225, when the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212 are respectively connected to the first high-pressure fluid connector 122a and the second high-pressure fluid When the first connecting end 1221 of the connecting piece 122b is connected, the connecting bumps 125 of the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212 are respectively arranged on the first high-pressure fluid connecting piece 122a and the second high-pressure fluid connecting piece. The connection groove 1225 of the first connection end 1221 of 122b; the second connection end 1222 of the first high-pressure fluid connection 122a and the second high-pressure fluid connection 122b respectively have connection protrusions 1226, when the first high-pressure fluid connection 122a and the second connecting end 1222 of the second high-pressure fluid connector 122b are respectively connected to the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b, the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b The connecting protrusions 1226 of the two connecting ends 1222 are respectively disposed on the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b.

In order to ensure the tightness of the connection between the components of the low-pressure fluid valve 11 and the high-pressure fluid valve 12, the first low-pressure fluid end 1111 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of this embodiment is connected to the first low-pressure fluid connector 112a Between the first connection end 1121 of the three-way low-pressure valve body 111 and the first connection end 1121 of the second low-pressure fluid connection 112a, between the second low-pressure fluid connection 112a of the three-way low-pressure valve body 111 Between the connecting end 1122 and the first low-pressure fluid inlet 101a and between the second connecting end 1122 of the second low-pressure fluid connector 112b and the second low-pressure fluid inlet 101b, laser welding is used to prevent the low-pressure fluid from leaking therebetween; Between the first high-pressure fluid end 1211 of the three-way high-pressure valve body 121 of the high-pressure fluid valve 12 and the first connection end 1221 of the first high-pressure fluid connector 122a, the second high-pressure fluid end of the three-way high-pressure valve body 121 Between 1212 and the first connection end 1221 of the second high-pressure fluid connection 122a, between the second connection end 1222 of the first high-pressure fluid connection 122a and the first high-pressure fluid inlet 102a, and the first connection of the second high-pressure fluid connection 122b Laser welding is used between the two connecting ends 1222 and the second high-pressure fluid inlet 102b to prevent high-pressure fluid from leaking therebetween.

Please refer to Fig. 6, Fig. 7a, Fig. 7b, Fig. 8a and Fig. 8b together, which are the first use state diagram of the low-pressure fluid valve 11 and the second use state diagram of the low-pressure fluid valve 11 according to the first embodiment of the present application, The first use state diagram of the high-pressure fluid valve 12, the second use state diagram of the high-pressure fluid valve 12 and the third use state diagram of the low-pressure fluid valve 11; The external fluid supply device is connected to the low-pressure fluid inlet end 1113 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11. The external fluid supply device provides low-pressure fluid to the low-pressure fluid valve 11. The low-pressure fluid flows in from the low-pressure fluid inlet channel 1116 and simultaneously enters the first A low-pressure spool accommodating space 1114 and a second low-pressure spool accommodating space 1115, the low-pressure fluid pushes the first low-pressure spool 113a located in the first low-pressure spool accommodating space 1114 to move to the first low-pressure fluid connector 112a and Push the second low-pressure spool 113b in the second low-pressure spool accommodating space 1115 to move toward the second low-pressure fluid connector 112b, the first low-pressure spool 113a presses the first low-pressure spring 114a, and the second low-pressure spool 113b presses the first low-pressure spring 114a. Two low-pressure springs 114b make the low-pressure fluid enter the channel 1116, the first low-pressure spool accommodating space 1114, the sealing space 1123 of the first low-pressure fluid connector 112a, the low-pressure fluid channel 1124 of the first low-pressure fluid connector 112a and the first low-pressure The fluid inlet 101a forms a passage, and the low-pressure fluid flows into the first piston chamber 103a from the first low-pressure fluid inlet 101a; similarly, the low-pressure fluid enters the channel 1116, the second low-pressure spool accommodating space 1115, and the second low-pressure fluid connector 112b. The sealed space 1123, the low-pressure fluid channel 1124 of the second low-pressure fluid connector 112b and the first low-pressure fluid inlet 101b form a passage, and the fluid flows into the second piston chamber 103b from the first low-pressure fluid inlet 101b, so that the piston in the first piston chamber 103a When the piston structure 1031 of the structure 1031 and the second piston cavity 103b is not in operation, the fluid first fills the first piston cavity 103a and the second piston cavity 103b.

The piston structure 1031 connected to the first piston chamber 103a and the second piston chamber 103b starts to operate. When the piston structure 1031 of the first piston chamber 103a squeezes the low-pressure fluid in the first piston chamber 103a, a High-pressure fluid, at this time, the high-pressure fluid flows in from the first low-pressure fluid inlet 101a and the first high-pressure fluid inlet 102a, and the high-pressure fluid flowing into the first low-pressure fluid inlet 101a pushes the first low-pressure valve core 113a in the first low-pressure valve core accommodation space 1114 Moving toward the low-pressure fluid inlet channel 1116, the thrust of the high-pressure fluid and the elastic force generated by the recovery of the squeezed first low-pressure spring 114a is greater than the thrust of the low-pressure fluid flowing out of the low-pressure fluid inlet channel 1116, so the first low-pressure spool 113a abuts against On the side wall of one end of the first low-pressure spool accommodating space 1114 close to the low-pressure fluid inlet passage 1116, the first low-pressure spool 113a blocks the communication between the low-pressure fluid inlet passage 1116 and the first low-pressure spool accommodating space 1114, and the low-pressure fluid The low-pressure fluid will not flow into the first low-pressure spool accommodating space 1114 from the low-pressure fluid inlet passage 1116, and the high-pressure fluid will not flow from the first low-pressure spool accommodating space 1114 to the low-pressure fluid inlet passage 1116, and the low-pressure fluid will only enter from the low-pressure fluid. The channel 1116 flows into the second low-pressure spool accommodating space 1115 , the second low-pressure fluid connection piece 112b , the second low-pressure fluid inlet 101b and the second piston chamber 103b , as shown in FIG. 7 a .

In addition, the high-pressure fluid flows into the first high-pressure valve core accommodation space 1214 from the first high-pressure fluid outlet 102a, and pushes the first high-pressure valve core 123a to squeeze the first high-pressure spring 124a and move toward the high-pressure fluid outlet channel 1216, and the second high-pressure fluid The outlet 102a, the first high-pressure fluid connector 122a, the first high-pressure spool accommodating space 1214 and the high-pressure fluid outlet channel 1216 form a passage, and the high-pressure fluid flows out from the high-pressure fluid outlet channel 1216, as shown in FIG. 7b. When the high-pressure fluid is generated in the second piston chamber 103b, the first piston chamber 103a stops supplying the high-pressure fluid, and the elastic force generated by the squeezed first high-pressure spring 124a in the first high-pressure valve core accommodation space 1214 pushes the first high-pressure fluid. The spool 123a moves toward the first high-pressure fluid connector 122a, so that the first high-pressure spool 123a abuts against the side wall at one end of the sealed space 1213, blocking the connection between the first high-pressure outlet 102a and the first high-pressure spool accommodating space 1214 connected. The second piston chamber 103b supplies high-pressure fluid through the second low-pressure fluid inlet 101b and the second high-pressure fluid outlet 102b and flows into the second low-pressure spool accommodating space 1115 and the second high-pressure spool accommodating space 1215, changing the second low-pressure spool 113b And the position of the second high-pressure valve core 123b, the second low-pressure valve core 113b abuts against the side wall near the end of the low-pressure fluid inlet passage 1116, blocking the communication between the second low-pressure valve core accommodation space 1115 and the low-pressure fluid inlet passage 1116 , the low-pressure fluid will not flow into the second low-pressure spool accommodating space 1115, and the high-pressure fluid will not flow into the low-pressure fluid inlet channel 1116; the second high-pressure spool 123b is pushed by the high-pressure fluid to move to the high-pressure fluid outlet channel 1216, so that the second high-pressure The fluid outlet 102b, the second high-pressure fluid connection piece 122b, the second high-pressure valve core accommodation space 1215 and the high-pressure fluid outlet passage 1216 form a passage, and the high-pressure fluid can flow out from the high-pressure fluid outlet passage 1216 .

Referring back to Fig. 3 and Fig. 5, the first low-pressure spool 113a, the second low-pressure spool 113b, the first high-pressure spool 123a and the second high-pressure spool 123b of this embodiment are respectively solid spheres, and the first low-pressure spool accommodates The diameters of the space 1114, the second low-pressure spool accommodating space 1115, the first high-pressure spool accommodating space 1214, and the second high-pressure spool accommodating space 1215 are respectively larger than the first low-pressure spool 113a, the second low-pressure spool 113b, The diameters of the first high-pressure spool 123a and the second high-pressure spool 123b make the first low-pressure spool accommodating space 1114, the second low-pressure spool accommodating space 1115, the first high-pressure spool accommodating space 1214 and the second high-pressure spool accommodating space 1114. The spool accommodating space 1215 accommodates the first low-pressure spool 113a, the second low-pressure spool 113b, the first high-pressure spool 123a, and the second high-pressure spool 123b respectively. The diameters of the low-pressure fluid inlet channel 1116, the low-pressure fluid channel 1124, the high-pressure fluid outlet channel 1216, and the high-pressure fluid channel 1224 are respectively smaller than the first low-pressure spool accommodating space 1114, the second low-pressure spool accommodating space 1115, and the first high-pressure spool accommodating space. The diameters of the accommodating space 1214 and the second high-pressure spool accommodating space 1215 also mean that the diameters of the low-pressure fluid inlet channel 1116, the low-pressure fluid channel 1124, the high-pressure fluid outlet channel 1216, and the high-pressure fluid channel 1224 are smaller than the diameters of the first low-pressure spool 113a, The diameters of the second low-pressure spool 113b, the first high-pressure spool 123a and the second high-pressure spool 123b, the first low-pressure spool 113a and the second low-pressure spool 113b can close the low-pressure fluid into the channel 1116, preventing the high-pressure fluid from flowing from the low-pressure fluid. The inlet passage 1116 flows out, and the first high-pressure valve core 123 a and the second high-pressure valve core 123 b close the high-pressure fluid passage 1224 to prevent the low-pressure fluid from flowing out from the high-pressure fluid outlet passage 1216 .

The first low pressure spool 113a, the second low pressure spool 113b, the first high pressure spool 123a and the second high pressure spool 123b of this embodiment can also be hollow spheres, solid cylinders, hollow cylinders, solid cylinders, hollow Cylinder, solid special-shaped body or hollow special-shaped body. , the side wall at one end of the first low-pressure spool accommodating space 1114, the side wall at one end of the sealing space 1123 of the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b, and one end of the second low-pressure spool accommodating space 1115 The side wall of the first high-pressure spool accommodating space 1214, the side wall of one end of the sealing space 1123 of the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b, and the second high-pressure spool accommodating space The side wall at one end of 1215 is a slope; when the first low-pressure valve core 113a, the second low-pressure valve core 113b, the first high-pressure valve core 123a and the second high-pressure valve core 123b are cylinders or special-shaped bodies with vertical planes on both sides, The side wall of one end of the first low-pressure spool accommodating space 1114, the side wall of one end of the sealing space 1123 of the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b, the side of one end of the second low-pressure spool accommodating space 1115 wall, the side wall at one end of the first high-pressure spool accommodating space 1214, the side wall at one end of the sealed space 1123 of the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b, and one end of the second high-pressure spool accommodating space 1215 The side wall is a vertical plane, so that the first low-pressure spool 113a or the second low-pressure spool 113b abuts against the side wall at one end of the first low-pressure spool accommodating space 1114 or at one end of the second low-pressure spool accommodating space 1115, respectively. On the side wall, the first low-pressure spool 113a or the second low-pressure spool 113b can completely close the low-pressure fluid inlet passage 1116 to prevent the high-pressure fluid from flowing into the low-pressure fluid inlet passage 1116; similarly, the first high-pressure spool 123a or the second high-pressure spool 123b respectively abuts against the side wall of one end of the sealed space 1223 of the first high-pressure fluid connector 122a or the side wall of one end of the sealed space 1223 of the second high-pressure fluid connector 122b, the first high-pressure valve core 123a or the second high-pressure valve core 123b The high-pressure fluid channel 1224 of the first high-pressure fluid connector 122a or the high-pressure fluid channel 1224 of the second high-pressure fluid connector 122b can be completely closed to prevent low-pressure fluid from flowing into the first high-pressure valve core accommodation space 1214 or the second high-pressure valve core accommodation space. Space 1215.

Referring again to Fig. 1, the outer surface of the pump body 10 of this embodiment has two opposite clamping grooves 104, and the two clamping grooves 104 are located on both sides of the pump body 10 and arranged in a spiral, please refer to Fig. 9a and Fig. 9b is a use state diagram and a partial cross-sectional view of the voltage stabilizing pump 1 set in the medical equipment 2 according to the first embodiment of the present application; 3 Set in the medical equipment 2, the pump body clamping device 3 includes a fixing part 31, a rotating shaft 32, a driven part 33, a connecting rod 34 and a clamping ring 35, one end of the fixing part 31 has a pump body setting opening 311, and the rotating shaft 32 is set on the other end of the fixing piece 31, the driven piece 33 is set on the rotating shaft 32, the clamping ring 35 is sleeved on the fixing piece 31, and the two ends of the connecting rod 34 are connected with the driven piece 33 and the clamping ring 35 respectively. Pivoted, the clamping ring 35 has two opposite clamping blocks 351, and the two clamping blocks 351 are arranged in a spiral. The fixing part 31 of the pump body clamping device 3 is first fixed on the connecting part 21 of the medical equipment 2, the clamping ring 35 is located between the fixing part 31 and the connecting part 21, and then the pump body 10 of the stabilizing pump 1 is provided with an opening 311 from the pump body Inserted, the rotating shaft 32 rotates to drive the follower 33 to rotate, the follower 33 drives the clamping ring 35 to rotate through the connecting rod 34, and the two clamping blocks 351 of the clamping ring 35 are engaged with the two clamping blocks 351 of the pump body 10. A clamping groove 104 is used to stably fix the pump body 10 on the medical device 2 and prevent the pump body 10 from being separated from the medical device 2 during use.

Referring back to Figures 2 and 4, the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of the above-mentioned embodiment connect the protrusion 115 and the first low-pressure fluid connector 112a and the connection groove 1125 of the first connection end 1121 of the second low-pressure fluid connection 112b, and the connection of the first low-pressure fluid connection 112a and the second connection end 1122 of the second low-pressure fluid connection 112b The connection mode between the bump 1126 and the first low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b, and the connecting bump 125 between the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212 and the first high-pressure fluid connector 122a And the connection mode of the connection groove 1225 of the first connection end 1221 of the second high-pressure fluid connection 122b, and the connection protrusion of the second connection end 1222 of the first high-pressure fluid connection 122a and the second high-pressure fluid connection 122b The block 1226 is connected to the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b by transition fit and laser welding.

However, the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of the above-mentioned embodiment connect the protrusions 115 with the first low-pressure fluid connector 112a and the second low-pressure fluid connection. The connection mode of the connection groove 1125 of the first connection end 1121 of the connector 112b, and the connection protrusion 1126 of the second connection end 1122 of the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b and the first The connection mode of the low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b, and the connecting bump 125 of the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212 are connected with the first high-pressure fluid connector 122a and the second high-pressure fluid The connection method of the connection groove 1225 of the first connection end 1221 of the piece 122b, and the connection protrusion 1226 of the second connection end 1222 of the first high-pressure fluid connection piece 122a and the second high-pressure fluid connection piece 122b and the first high-pressure fluid connection piece 1226 The connection mode of the fluid outlet 102a and the second high-pressure fluid outlet 102b can be changed to an interference fit for connection, that is, the connection between the protrusion 115 and the connection groove 1125, the connection protrusion 1126 and the first low-pressure fluid inlet 101a to obtain the second drop. Between the pressurized fluid inlets 101b, between the connecting protrusion 125 and the connecting groove 1225, and between the connecting protrusion 1226 and the first high-pressure fluid outlet 102a or the second high-pressure fluid outlet 102b are hard-sealed by structure. In this embodiment, the connecting bump 115 of the first low-pressure fluid end 1111 and the second low-pressure fluid end 1112, the connecting bump of the second connecting end 1122 of the first low-pressure fluid connecting piece 112a and the second low-pressure fluid connecting piece 112b Block 1126, the connecting bump 125 of the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212, and the connecting bump of the second connecting end 1222 of the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b 1226 is a cone. The connection method of interference fit can also make the components of the stabilizing pump 1 have good sealing performance.

Please refer to Figures 10a and 10b, which are the first sectional view and the second sectional view of the voltage stabilizing pump 1 of the second embodiment of the present application; as shown in the figure, the three-way low-pressure valve body of the low-pressure fluid valve 11 of the present embodiment The first low-pressure fluid end 1111 of 111 is connected to the first connection end 1121 of the first low-pressure fluid connector 112a, and the first low-pressure fluid end 1111 and the first connection end 1121 of the first low-pressure fluid connector 112a are provided with The elastic sealing ring 16 seals the connection gap between the first low-pressure fluid end 1111 and the first connection end 1121 of the first low-pressure fluid connector 112a; similarly, the second low-pressure fluid end 1112 and the second low-pressure fluid connector 112b between the first connection end 1121, between the second connection end 1122 of the first low-pressure fluid connector 112a and the first low-pressure fluid inlet 101a, and between the second connection end 1122 of the second low-pressure fluid connector 112b and the second Elastic sealing rings 16 are respectively provided between the low-pressure fluid inlets 101b to seal the second connection between the second low-pressure fluid end 1112 and the first connection end 1121 of the second low-pressure fluid connector 112b and the first low-pressure fluid connector 112a. Between the end portion 1122 and the first low-pressure fluid inlet 101 a and between the second connection end 1122 of the second low-pressure fluid connector 112 b and the second low-pressure fluid inlet 101 b.

Similarly, between the first high-pressure fluid end 1211 of the three-way high-pressure valve body 121 of the high-pressure fluid valve 12 of this embodiment and the first connection end 1221 of the first high-pressure fluid connector 122a, the second high-pressure fluid end 1212 Between the first connection end 1221 of the second high-pressure fluid connection 122b, between the second connection end 1222 of the first high-pressure fluid connection 122a and the first high-pressure fluid outlet 102a, and the second connection of the second high-pressure fluid connection 122b. Elastic sealing rings 16 are respectively provided between the connecting end 1222 and the second high-pressure fluid outlet 102b to seal between the first high-pressure fluid end 1211 and the first connecting end 1221 of the first high-pressure fluid connector 122a, the second high-pressure fluid Between the end 1212 and the first connection end 1221 of the second high-pressure fluid connector 122b, between the second connection end 1222 of the first high-pressure fluid connector 122a and the first high-pressure fluid outlet 102a, and the second high-pressure fluid connector 122b Between the second connection end 1222 of the second high-pressure fluid outlet 102b. In this way, between the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 and the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b, and between the three-way high-pressure valve body 121 of the high-pressure fluid valve 12 and the first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b have a good seal, and the first low-pressure fluid connector 112a and the second low-pressure fluid connector 112b of the low-pressure fluid valve 11 are respectively connected to the first low-pressure fluid inlet 101a and the second low-pressure fluid inlet 101b. The first high-pressure fluid connector 122a and the second high-pressure fluid connector 122b of the high-pressure fluid valve 12 have good sealability with the first high-pressure fluid outlet 102a and the second high-pressure fluid outlet 102b respectively.

The first low-pressure fluid end 1111 and the second low-pressure fluid end 1112 of the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of this embodiment are connected to the first low-pressure fluid connector 112a and the second low-pressure fluid. The connection mode of the connection groove 1125 of the first connection end 1121 of the piece 112b, and the connection protrusion 1126 of the second connection end 1122 of the first low-pressure fluid connection piece 112a and the second low-pressure fluid connection piece 112b and the first low-pressure fluid connection piece 112b. The connection method of the fluid inlet 101a and the second low-pressure fluid inlet 101b, and the connecting bump 125 of the first high-pressure fluid end 1211 and the second high-pressure fluid end 1212, and the first high-pressure fluid connector 122a and the second high-pressure fluid connector The connection mode of the connection groove 1225 of the first connection end 1221 of 122b, and the connection protrusion 1226 of the second connection end 1222 of the first high-pressure fluid connection 122a and the second high-pressure fluid connection 122b and the first high-pressure fluid The outlet 102a and the second high-pressure fluid outlet 102b can be connected by transition fit through laser welding or interference fit, so as to increase the overall sealing performance of the regulator pump 1 .

However, the three-way low-pressure valve body 111 of the low-pressure fluid valve 11 of this embodiment includes a first low-pressure valve body 111a and a second low-pressure valve body 111b, and the first low-pressure valve body 111a includes a first low-pressure fluid end portion 1111 and a second low-pressure fluid end portion 1111. End 1112, the second low-pressure valve body 111b includes a low-pressure fluid inlet end 1113, the second low-pressure valve body 111b is arranged on the first low-pressure valve body 111a by screwing, but the first low-pressure valve body 111a and the second low-pressure valve body 111b is provided with an elastic sealing ring 16, which seals the connection gap between the first low-pressure valve body 111a and the second low-pressure valve body 111b through the elastic sealing ring 16, preventing low-pressure fluid from flowing from the second low-pressure valve body 111b to the first low-pressure valve body 111a And it leaks from between the first low-pressure valve body 111a and the second low-pressure valve body 111b.

To sum up, the low-pressure fluid valve and high-pressure fluid valve of the stabilizing pump of the present application are assembled by multiple components. When the stabilizing pump is damaged, only the damaged components need to be replaced instead of the entire set. In addition, the components are connected through transition fit and laser welding, interference fit or elastic sealing rings, which can effectively increase the sealing of the component assembly and prevent low-pressure fluid or high-pressure fluid from leaking from the component assembly. The pump body of the pressure stabilizing pump of the present application is provided with two opposite clamping grooves, so that the pump body clamping device is matched with the two clamping grooves of the pump body to be stably fixed on the medical equipment.

The above description is only the embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (11)

1. A voltage stabilizing pump, characterized in that, comprising: The pump body has a first low-pressure fluid inlet, a second low-pressure fluid inlet, a first high-pressure fluid outlet, a second high-pressure fluid outlet, a first piston chamber, and a second piston chamber. The first low-pressure fluid inlet and the first high-pressure fluid The outlet communicates with the first piston chamber, the second low-pressure fluid inlet and the second high-pressure fluid outlet communicate with the second piston chamber, and pistons are respectively arranged in the first piston chamber and the second piston chamber. structure; The low-pressure fluid valve includes a three-way low-pressure valve body and a first low-pressure fluid connector and a second low-pressure fluid connector connected to the three-way low-pressure valve body, and the first low-pressure fluid connector and the second low-pressure fluid connector are respectively connecting the first low pressure fluid inlet and the second low pressure fluid inlet; and The high-pressure fluid valve is located on one side of the low-pressure fluid valve, and includes a three-way high-pressure valve body, a first high-pressure fluid connector and a second high-pressure fluid connector connected to the three-way high-pressure valve body, the first high-pressure The fluid connector and the second high-pressure fluid connector are respectively connected to the first high-pressure fluid outlet and the second high-pressure fluid outlet; Wherein, the three-way low-pressure valve body is respectively connected to the first low-pressure fluid connector and the second low-pressure fluid connector through transition fit and laser welding or interference fit, and the first low-pressure fluid connector is connected to the first low-pressure fluid connector. The low-pressure fluid inlet and the second low-pressure fluid connector are connected to the second low-pressure fluid inlet by transition fit and laser welding or interference fit, and the three-way high-pressure valve body is respectively connected to the first high-pressure fluid connector and The second high-pressure fluid connectors are connected by transition fit and laser welding or interference fit, and the first high-pressure fluid connector and the first high-pressure fluid outlet and the second high-pressure fluid connector and the second high-pressure fluid outlet are connected by transition Mated and joined by laser welding or interference fit. 2. The pressure stabilizing pump according to claim 1, wherein the three-way low-pressure valve body has a first low-pressure fluid end, a second low-pressure fluid end, and a low-pressure fluid inlet end, and the first low-pressure The first low-pressure spool accommodating space at the fluid end and the second low-pressure spool accommodating space at the second low-pressure fluid end communicate with the low-pressure fluid inlet channel at the low-pressure fluid inlet end respectively; A low-pressure fluid connection piece and a second low-pressure fluid connection piece respectively have a first connection end and a second connection end, and the first connection end of the first low-pressure fluid connection piece is connected to the first connection end of the three-way low-pressure valve body. A low-pressure fluid end is connected, and has a sealed space communicated with the first low-pressure spool accommodating space, and its second connection end is connected with the first low-pressure fluid inlet, and has a sealed space communicated with the first low-pressure fluid inlet. The low-pressure fluid channel of the low-pressure fluid inlet; the first connection end of the second low-pressure fluid connector is connected to the second low-pressure fluid end of the three-way low-pressure valve body, and has a capacity compatible with the second low-pressure valve core. A sealed space communicated with the space, the second connection end of which is connected to the second low-pressure fluid inlet, and has a low-pressure fluid channel communicating with the sealed space and the first low-pressure fluid inlet. 3. The pressure stabilizing pump according to claim 2, wherein the accommodating space of the first low-pressure spool accommodates the first low-pressure spool and the first low-pressure spring, and the first low-pressure spool abuts against The first low-pressure spool accommodates the side wall at one end of the space, and the first low-pressure spring abuts between the first low-pressure spool and the side wall at one end of the sealed space; the second low-pressure spool accommodates The storage space accommodates the second low-pressure valve core and the second low-pressure spring, the second low-pressure valve core abuts against the side wall at one end of the second low-pressure valve core accommodating space, and the second low-pressure spring abuts against the Between the second low-pressure valve core and the side wall at one end of the sealed space. 4. The pressure stabilizing pump according to claim 2, characterized in that, the first low-pressure fluid end and the second low-pressure fluid end respectively have connecting protrusions, and the first low-pressure fluid connector and the second low-pressure fluid The first connection ends of the fluid connectors respectively have connection grooves, and the connection protrusions of the first low-pressure fluid end and the second low-pressure fluid end are respectively arranged on the first low-pressure fluid connector and the second low-pressure fluid connector. The connection groove of the first connection end of the connector; the second connection end of the first low-pressure fluid connection and the second low-pressure fluid connection has a connection protrusion, and the first low-pressure fluid connection and the second The connecting bumps on the second connecting end of the low-pressure fluid connector are respectively arranged on the first low-pressure fluid inlet and the second low-pressure fluid inlet. 5. The pressure stabilizing pump according to claim 2, wherein the three-way low-pressure valve body comprises a first valve body and a second low-pressure valve body screwed to the first low-pressure valve body, the first low-pressure valve body A low-pressure valve body has the first low-pressure fluid end and a second low-pressure fluid end, and the second low-pressure valve body has a low-pressure fluid inlet end. 6. The pressure stabilizing pump according to claim 5, wherein an elastic sealing ring is provided between the first low-pressure valve body and the second low-pressure valve body. 7. The pressure stabilizing pump according to claim 1, wherein the three-way high-pressure valve body has a first high-pressure fluid end, a second high-pressure fluid end, and a high-pressure fluid outlet end, and the first high-pressure The first high-pressure spool accommodating space at the fluid end and the second high-pressure spool accommodating space at the second high-pressure fluid end are respectively communicated with the high-pressure fluid outlet channel at the high-pressure fluid outlet end; A high-pressure fluid connecting piece and a second high-pressure fluid connecting piece respectively have a first connecting end and a second connecting end, and the first connecting end of the first high-pressure fluid connecting piece is connected to the second connecting end of the three-way high-pressure valve body. A high-pressure fluid end is connected, and has a sealed space communicating with the first high-pressure valve core accommodation space, and its second connection end is connected to the first high-pressure fluid outlet, and has a sealing space that communicates with the first high-pressure valve. The high-pressure fluid channel of the high-pressure fluid outlet; the first connection end of the second high-pressure fluid connector is connected to the second high-pressure fluid end of the three-way high-pressure valve body, and has a capacity for the second high-pressure valve core A sealed space communicated with the space, the second connection end of which is connected to the second high-pressure fluid outlet, and has a high-pressure fluid channel communicating with the sealed space and the first high-pressure fluid outlet. 8. The pressure stabilizing pump according to claim 7, wherein the first valve core accommodating space accommodates a first high-pressure valve core and a first high-pressure spring, and the first high-pressure valve core is in contact with the first high-pressure valve core. The side wall at one end of the accommodating space for the first high-pressure valve core, the first high-pressure spring abuts between the first high-pressure valve core and the side wall at one end of the sealed space; the second high-pressure valve core accommodates The space accommodates a second high-pressure valve core and a second high-pressure spring, the second high-pressure valve core abuts against the side wall at one end of the second high-pressure valve core accommodating space, and the second high-pressure spring abuts against the Between the second high-pressure valve core and the side wall at one end of the sealed space. 9. The pressure stabilizing pump according to claim 7, characterized in that, the first high-pressure fluid end and the second high-pressure fluid end respectively have connection bumps, and the first high-pressure fluid connector and the second high-pressure fluid The first connection ends of the fluid connectors respectively have connection grooves, and the connection protrusions of the first high-pressure fluid end and the second high-pressure fluid end are respectively arranged on the first high-pressure fluid connector and the second high-pressure fluid The connecting groove of the first connecting end of the connecting piece; the second connecting end of the first high-pressure fluid connecting piece and the second high-pressure fluid connecting piece has a connecting protrusion, and the first high-pressure fluid connecting piece and the second high-pressure fluid connecting piece The connecting bumps on the second connecting end of the high-pressure fluid connector are respectively arranged on the first high-pressure fluid inlet and the second high-pressure fluid inlet. 10. The pressure stabilizing pump according to any one of claims 1-9, characterized in that elastic valves are provided between the three-way low-pressure valve body and the first low-pressure fluid connector and the second low-pressure fluid connector respectively. Sealing rings, elastic sealing rings are respectively provided between the first low-pressure fluid connector and the first low-pressure fluid inlet and between the second low-pressure fluid connector and the second low-pressure fluid inlet, and the three-way high-pressure valve body is respectively connected to the An elastic sealing ring is provided between the first high-pressure fluid connecting piece and the second high-pressure fluid connecting piece, between the first high-pressure fluid connecting piece and the first high-pressure fluid outlet and between the second high-pressure fluid connecting piece and the second high-pressure fluid outlet There are elastic sealing rings between them. 11. The pressure stabilizing pump according to any one of claims 1-9, wherein the pump body has two corresponding clamping grooves, and the two clamping grooves are arranged in a spiral.