CN114688320A - Control valve, ventilator and veterinary anesthesia breathing equipment - Google Patents

Abstract

The invention discloses a control valve, a breathing machine and veterinary anesthesia and breathing equipment, wherein the control valve comprises a valve body and a valve plate assembly, the valve body is provided with a flow channel, an inlet communicated with one end of the flow channel and an outlet communicated with the other end of the flow channel, and the valve plate assembly is arranged inside the valve body. The valve block assembly is used for controlling the on-off of the flow channel, the valve body and the valve block assembly are enclosed to form an air cavity, and the valve body or the valve block assembly is provided with a damping hole which is communicated with the air cavity and the outlet or communicated with the air cavity and the outside of the control valve. According to the control valve disclosed by the invention, the valve plate assembly can stably run in the valve body without vibration by arranging the damping hole, so that the noise generated during the running of the control valve can be effectively reduced, and the influence of the noise on the rest of a patient is avoided.

Description

Control valve, ventilator and veterinary anesthesia breathing equipment

technical field

The invention relates to the field of medical instruments, in particular to a control valve, a ventilator and anesthesia breathing equipment for veterinary use.

Background technique

A check valve is a valve that only allows fluid to flow in one direction. Its working principle is that when the pressure at the inlet end of the check valve is greater than the pressure at the outlet end, the valve opens and the fluid can flow normally; when the pressure at the outlet end is greater than the pressure at the inlet end. , the valve is closed, and the fluid at the outlet end is blocked.

Most of the existing one-way valves are provided with a through hole on the valve body, a valve core is inserted in the through hole, a spring is sleeved on the valve core, and the spring compresses the valve core. When the pressure at the inlet end is greater than the elastic force of the spring, the valve core opens. . The existing one-way valve has vibration and abnormal noise during operation. When the one-way valve is used on the ventilator, it will affect the patient's rest, and the spring is easily damaged, resulting in the failure of the one-way valve.

SUMMARY OF THE INVENTION

In view of this, the present invention proposes a control valve, a ventilator and a veterinary anesthesia breathing apparatus.

A first aspect of the present invention provides a control valve, comprising a valve body and a valve plate assembly, wherein the valve body is provided with a flow channel, an inlet communicated with one end of the flow channel, and an outlet communicated with the other end of the flow channel, The valve plate assembly is installed on the valve body, the valve plate assembly is used to control the on-off of the flow channel, the valve body and the valve plate assembly are enclosed to form an air cavity, and the valve body or the The valve plate assembly is provided with a damping hole, and the damping hole communicates with the air cavity and the outlet, or the damping hole communicates with the air cavity and the outside of the control valve.

A second aspect of the present invention provides a ventilator, comprising an air supply device, a pipeline and the above-mentioned control valve, the air supply device ventilates a patient through the pipeline, and the control valve is installed on the pipeline to control the flow of gas flow.

A third aspect of the present invention provides a veterinary anesthesia breathing apparatus, comprising an air supply device, a pipeline and the above-mentioned control valve, the air supply device ventilates with a target through the pipeline, and the control valve is installed on the pipeline to control the flow of gas.

It can be seen from the above technical solutions that, in the control valve proposed in the first aspect of the present invention, the damping hole is provided, so that the valve plate assembly can run smoothly in the valve body without vibration, which can effectively reduce the occurrence of vibration during the operation of the control valve. Noise, to avoid noise affecting the patient's rest.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. For those of ordinary skill, other drawings can also be obtained like these drawings on the premise of no creative work.

1 is a schematic structural diagram of a control valve proposed in an embodiment of the present invention;

Fig. 2 is the cross-sectional schematic diagram of A-A in Fig. 1;

Fig. 3 is the partial enlarged schematic diagram of B place in Fig. 2;

4 is an exploded schematic diagram of a control valve proposed by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a modification of the piston core, the cylinder and the valve plate according to the embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It is also to be understood that the terminology used in this specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural unless the context clearly dictates otherwise.

It should further be understood that, as used in this specification and the appended claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items .

As shown in FIGS. 1 to 5 , an embodiment of the present invention provides a control valve 100 for a ventilator or veterinary anesthesia breathing apparatus. The control valve 100 includes a valve body 10 and a valve plate assembly 20 , and the body 10 is provided with a flow The channel 101 , the inlet 102 communicated with one end of the flow channel 101 , and the outlet 103 communicated with the other end of the flow channel 101 , and the valve plate assembly 20 can be slidably installed inside the valve body 10 . The valve plate assembly 20 is used to control the on-off of the flow channel 101 , the valve body 10 and the valve plate assembly 20 are enclosed to form an air cavity 104 , the valve body 10 or the valve plate assembly 20 is provided with a damping hole 105 , and the damping hole 105 communicates with the air cavity 104 And the outlet 103 , or the orifice 105 communicates with the air chamber 104 and the outside of the control valve 100 .

The control valve 100 proposed in the embodiment of the present invention is vertically installed on the ventilator or veterinary anesthesia breathing apparatus. The valve plate assembly 20 slides down to the flow channel 101 by its own gravity, and cuts off the flow channel 101. When the fluid enters the flow channel from the inlet 102 When the passage 101 is opened, the fluid pushes open the valve plate assembly 20 , the valve plate assembly 20 rises, and the fluid flows out from the outlet 103 . During the process of the valve plate assembly 20 rising and compressing the air cavity 104, the air in the air cavity 104 can be discharged from the damping hole 105, and the valve plate assembly 20 will not vibrate and produce abnormal noise due to the excessive gas pressure in the air cavity 104. When the plate assembly 20 is descending to expand the air cavity 104 , the air cylinder 12 can supply air into the air cavity 104 through the damping hole 105 , so that the valve plate assembly 20 is slowly lowered.

In the control valve 100 proposed in this embodiment, the damping holes 105 are provided, so that the valve plate assembly 20 can run smoothly in the valve body 10 without vibration, which can effectively reduce the noise generated when the control valve 100 is running, and avoid the noise to the valve body 10 . The rest of the patient is affected.

Optionally, the control valve 100 can be a one-way valve, a three-way valve, etc. When the control valve 100 is a one-way valve, the valve plate assembly 20 controls the opening and closing of the flow channel 101 so that the fluid can only flow from the inlet 102 to the outlet 103 .

It should be noted that the diameter of the damping hole 105 should be set to a suitable size, so that the valve plate assembly 20 can rise and fall smoothly. In one embodiment, the diameter of the damping hole 105 is any value in the range of 0.1-10 mm.

Optionally, the valve body 10 includes a main body 11 and a cylinder 12, an installation groove 106 is provided inside the main body 11, the cylinder 12 is installed in the installation groove 106, the valve plate assembly 20 can be slidably embedded in the cylinder 12, and the valve plate assembly 20 and The air cylinder 12 is enclosed to form an air cavity 104 . The air cylinder 12 is provided with a damping hole 105 , and the damping hole 105 communicates with the air cavity 104 and the outlet 103 .

In some other embodiments, the valve body 10 is not configured to include the body 11 and the cylinder 12 , but is a complete component, that is, the body 11 and the cylinder 12 are integrally formed, and the valve body 10 is provided with the installation groove 106 inside. In this embodiment, the damping hole 105 is provided on the valve body 10 , and the damping hole 105 communicates with the air chamber 104 and the outside of the control valve 100 .

Optionally, the body 11 includes a valve seat 111 and a valve body 112 connected to the valve seat 111 , the valve seat 111 is provided with a flow channel 101 , and the valve body 112 is provided with the installation groove 106 . In some embodiments, the valve seat 111 and the valve body 112 may be formed integrally.

Optionally, the side of the valve seat 111 facing the valve body 112 is provided with a first opening 107 and a second opening 108 , the side wall of the valve seat 111 is provided with an inlet 102 and an outlet 103 , and the first opening 107 is connected with the inlet 102 The second opening 108 communicates with the outlet 103 , and the valve plate 22 of the valve plate assembly 20 is covered at the first opening 107 . The fluid flows from the inlet 102 to the first opening 107 to open the valve plate assembly 20 and then enters the second opening 108 from the first opening 107 and flows out from the outlet 103. When the fluid flows back from the outlet 103, due to the valve plate assembly 20, the fluid is blocked at the first opening 107.

Optionally, the valve plate assembly 20 includes a piston core 21 and a valve plate 22 , the piston core 21 can be interactively embedded in the cylinder 12 , and the valve plate 22 is movably connected with the piston core 21 . Due to possible errors in the process of manufacturing and assembling parts, there may or may be some gaps between the two parts that should be perfectly fit after assembly. In this embodiment, the valve plate 22 is movably connected with the piston core 21, so that the valve plate 22 can cover the first opening 107 tightly through its own adjustment.

As shown in FIG. 5 , it should be noted that in other embodiments, the piston core and the cylinder can be reversed, that is, the piston core 21 ′ is fixedly installed inside the valve body 112 ′, and the cylinder 12 ′ is sleeved on the piston core 21 ′ In addition, the valve plate 22' is connected with the cylinder 12', and the cylinder 12' slides up and down along the piston core 21' to drive the valve plate 22' to slide up and down.

Optionally, the valve plate assembly 20 further includes a connecting rod 23, one end of the connecting rod 23 is connected to the piston core 21, the other end of the connecting rod 23 is connected to the valve plate 22, and the connecting rod 23 is located between the piston core 21 and the valve plate 22 The portion includes at least one elastic segment. The movable connection between the valve plate 22 and the piston core 21 is realized by arranging the elastic section. In some embodiments, the part of the connecting rod 23 between the piston core 21 and the valve plate 22 is made of elastic material, for example, made of silicone material.

It should be noted that the movable connection between the valve plate 22 and the piston core 21 is not limited to the above-mentioned elastic segment arrangement.

Optionally, the outer diameter of the connecting rod 23 gradually decreases from the piston core 21 toward the valve plate 22 . In this embodiment, a section of the connecting rod 23 connected with the valve plate 22 has greater flexibility, so that the valve plate 22 can be flexibly rotated so as to tightly cover the first opening 107 .

Optionally, the cylinder 12 is made of metal, glass, ceramic, polytetrafluoroethylene (PTFE), polyformaldehyde (POM), poly-ether-ether-ketone (PEEK) and graphite A cylinder made of any one of the materials, or the inner wall of the cylinder is provided with one of a metal layer, a glass layer, a ceramic layer, a polytetrafluoroethylene layer, a polyoxymethylene layer, a polyetheretherketone layer and a graphite layer. Among them, polytetrafluoroethylene, polyoxymethylene, polyether ether ketone and graphite are all wear-resistant and self-lubricating materials, which can prolong the service life of the cylinder 12 and reduce the frictional force between the cylinder 12 and the piston core 21, so that the cylinder The operation between 12 and piston core 21 is smooth.

Optionally, the piston core 21 is a piston core made of any one of metal, glass, ceramics, polytetrafluoroethylene, polyoxymethylene, polyether ether ketone and graphite, or the outer side wall of the piston core is provided with metal. layer, glass layer, ceramic layer, polytetrafluoroethylene layer, polyoxymethylene layer, polyetheretherketone layer and graphite layer. Among them, polytetrafluoroethylene, polyoxymethylene, polyetheretherketone and graphite are all wear-resistant and self-lubricating materials, which can prolong the service life of the piston core 21 and reduce the frictional force between the cylinder 12 and the piston core 21, so that the The operation between the cylinder 12 and the piston core 21 is smooth.

Optionally, the piston core 21 includes a bottom plate 211 and a side wall 212 surrounding the bottom plate 211 , the bottom plate 211 is provided with a through hole 213 , and the outer side wall of the connecting rod 23 is provided with a first snap portion 231 and the first snap portion. The connecting rods 23 are inserted through the through holes 213 , and the first and second latching parts 231 and 232 are clamped on opposite sides of the bottom plate 211 . Optionally, the first snap portion 231 and the second snap portion 232 can be made of elastic materials. During installation, the connecting rod 23 is passed through the through hole 213 from one side of the bottom plate 211 and is properly squeezed so that the first The buckling portion 231 or the second buckling portion 232 passes through the through hole 213 and is then clamped on the other side of the bottom plate 211 to complete the installation between the connecting rod 23 and the piston core 21 . Of course, the connection between the connecting rod 23 and the piston core 21 is not limited to the above method, for example, the connecting rod 23 and the piston core 21 can also be connected by screw connection, bonding or integral injection molding.

Optionally, the first snap portion 231 is located on the side of the bottom plate 211 facing away from the valve plate 22 , and the outer diameter of the first snap portion 231 gradually decreases in the direction away from the valve plate 22 . This embodiment facilitates the passage of the first snap portion 231 through the through hole 213 and reduces the difficulty of installation.

Optionally, the connecting rod 23 , the first snap portion 231 , the second snap portion 232 and the valve plate 22 are integrally injection-molded with elastic plastic, for example, a silicone material, which is easy to manufacture.

Optionally, a side of the valve body 112 away from the valve seat 111 is provided with an installation hole 109 communicating with the installation groove 106 , and the cylinder 12 is installed in the installation groove 106 through the installation hole 109 . In the actual assembly process, the valve body 112 and the valve seat 111 can be assembled first, and then the valve plate assembly 20 and the cylinder 12 can be assembled, and then the assembly of the valve plate assembly 20 and the cylinder 12 can be installed into the valve through the installation hole 109. body 112. The installation hole 109 not only facilitates the assembly of the control valve 100 and improves the assembly efficiency, but also facilitates the disassembly and replacement of the valve plate assembly 20 and the cylinder 12. When disassembling and assembling the valve plate assembly 20 and the cylinder 12, the body 10 does not need to be disassembled. It is only necessary to disassemble the valve plate assembly 20 and the cylinder 12 from the installation hole 109 . Of course, the valve body 112 is not provided with the installation hole 109 , and the valve plate assembly 20 and the cylinder 12 can also be installed into the valve body 112 through the side where the valve body 112 is connected to the valve seat 111 .

Optionally, the control valve 100 further includes a fastener 30 , the fastener 30 is installed on the side of the valve body 112 away from the valve seat 111 and partially extends into the installation hole 109 , and the fastener 30 is used to compress the cylinder 12 . Optionally, the fastener 30 is a flange bolt, a side of the valve body 112 away from the valve seat 111 is provided with a threaded hole, and the flange bolt is threadedly connected to the threaded hole and compresses the cylinder 12 . Of course, the fastener 30 can also be a combination of bolts and washers.

Exemplarily, the number of the fasteners 30 is two, the two fasteners 30 are provided on opposite sides of the mounting hole 109 , and the two fasteners 30 press the cylinder 12 from opposite sides of the cylinder 12 . Two fasteners can compress the cylinder 12 more firmly. Of course, the number of fasteners 30 is not limited to two, but may also be one or more than two, depending on actual design requirements.

Optionally, the valve body 112 is provided with a first flat surface 110 on the side wall of the mounting hole 109 , and a second flat surface 12 a is provided at the position where the air cylinder 12 cooperates with the installation hole 109 , and the second flat surface 12 a cooperates with the first flat surface 110 to realize the air cylinder 12 . The positioning on the valve body 112 prevents the cylinder 12 from rotating relative to the valve body 112 . Of course, the positioning of the cylinder 12 and the valve body 112 is not limited to the above-mentioned method. The other one of the inner side walls of the hole 109 is provided with a groove. When the cylinder 12 is installed in the mounting hole 109 , the protrusion is embedded in the groove to form the positioning of the cylinder 12 and the valve body 112 .

Optionally, the control valve 100 further includes a first sealing ring 40, the first sealing ring 40 is sandwiched between the valve body 112 and the cylinder 12, and the first sealing ring 40 is used for sealing between the valve body 112 and the cylinder 12, The fluid is prevented from flowing from the gap between the valve body 112 and the cylinder 12 to the mounting hole 109 and spreading out.

Optionally, the outer side wall of the cylinder 12 is provided with a first annular groove 121 , the first sealing ring 40 is embedded in the first annular groove 121 , and the first annular groove 121 is used for the positioning of the first sealing ring 40 . Of course, the first annular groove 121 can also be provided on the inner side wall of the valve body 112 .

Optionally, the control valve 100 further includes a second sealing ring 50 , the second sealing ring 50 is sandwiched between the valve seat 111 and the valve body 112 , and the second sealing ring 50 is used for sealing between the valve body 112 and the valve seat 111 . The seal prevents fluid from diffusing out of the gap between the valve body 112 and the valve seat 111 .

Optionally, a side of the valve seat 111 facing the valve body 112 is provided with a second annular groove 1111 , the second sealing ring 50 is embedded in the second annular groove 1111 , and the second annular groove 1111 is used for the positioning of the second sealing ring 50 . Of course, the second annular groove 1111 may also be provided on the side of the valve body 112 facing the valve seat 111 .

Optionally, the valve seat 111 is protruded with a surrounding wall 1112 on the inner side of the second annular groove 1111 , the end of the valve body 112 connected to the valve seat 111 is sleeved outside the surrounding wall 1112 , and the surrounding wall 1112 is used for the valve body 112 to be located in the valve body 1112 . Mounting and positioning on the seat 111 . Optionally, the contour of the surrounding wall 1112 is annular.

Optionally, the control valve 100 further includes a gas pipe joint 60 , and the gas pipe joint 60 is installed on the valve seat 111 and communicated with the inlet 102 . The air pipe connector 60 is used to connect other air pipes or air pressure monitoring equipment.

Optionally, the one-way valve 100 further includes a screw 70 , a mounting portion 1121 is protruded on the outer side wall of the valve body 112 near one end of the valve seat 111 , and the screw 70 passes through the mounting portion 1121 and is threadedly connected with the valve seat 111 to connect the valve body to the valve seat 111 . 112 is fastened to the valve seat 111 .

Embodiments of the present invention also provide a ventilator, which includes an air supply device, a pipeline, and the above-mentioned control valve 100. The air supply device ventilates the patient through the pipeline, and the control valve 100 is installed on the pipeline to control the flow of gas. The ventilator proposed in this embodiment adopts the above-mentioned control valve 100, and thus has the advantages of small abnormal noise and no influence on the patient's rest.

Optionally, the control valve 100 is installed vertically, and the valve plate assembly 20 is slidably connected with the valve body 10 in the vertical direction. The valve plate assembly 20 moves up and down inside the valve body 10 by relying on its own gravity and the thrust of the airflow.

The embodiment of the present invention provides a veterinary anesthesia breathing apparatus, the veterinary anesthesia breathing apparatus includes an air supply device, a pipeline and the above-mentioned control valve 100, the air supply device is ventilated with the target through the pipeline, and the control valve 100 is installed on the pipeline to Control the flow of gas.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed by the present invention. Modifications or substitutions should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (16)

1. A control valve, characterized in that it comprises a valve body and a valve plate assembly, the valve body is provided with a flow channel, an inlet communicated with one end of the flow channel and an outlet communicated with the other end of the flow channel, so The valve plate assembly can be slidably installed inside the valve body, the valve plate assembly is used to control the opening and closing of the flow channel, the valve body and the valve plate assembly are enclosed to form an air cavity, and the valve body Or the valve plate assembly is provided with a damping hole, and the damping hole communicates with the air cavity and the outlet, or the damping hole communicates with the air cavity and the outside of the control valve. 2 . The control valve according to claim 1 , wherein the valve body comprises a main body and an air cylinder, an installation groove is arranged inside the main body, the air cylinder is installed in the installation groove, and the valve plate The assembly can be slidably embedded in the cylinder, the valve plate assembly and the cylinder are enclosed to form the air cavity, the air cylinder is provided with the damping hole, and the damping hole communicates with the air cavity and the air cavity. Export. 3. The control valve according to claim 2, wherein the valve plate assembly comprises a piston core and a valve plate, the piston core can be slidably embedded in the cylinder, and the valve plate and the piston core are slidably embedded in the cylinder. Active connection. 4 . The control valve according to claim 3 , wherein the valve plate assembly further comprises a connecting rod, one end of the connecting rod is connected with the piston core, and the other end of the connecting rod is connected with the valve 4 . The connecting rod is connected with the plate, and the part of the connecting rod between the piston core and the valve plate at least includes an elastic section. 5 . The control valve of claim 4 , wherein the outer diameter of the connecting rod gradually decreases from the piston core toward the valve plate. 6 . 6. The control valve according to claim 3, wherein the cylinder is made of any one of metal, glass, ceramics, polytetrafluoroethylene, polyoxymethylene, polyether ether ketone and graphite The cylinder, or the inner sidewall of the cylinder is provided with one of a metal layer, a glass layer, a ceramic layer, a polytetrafluoroethylene layer, a polyoxymethylene layer, a polyether ether ketone layer and a graphite layer; and/or, The piston core is a piston core made of any one of metal, glass, ceramics, polytetrafluoroethylene, polyoxymethylene, polyether ether ketone and graphite, or the outer side wall of the piston core is provided with a metal layer. , a glass layer, a ceramic layer, a polytetrafluoroethylene layer, a polyoxymethylene layer, a polyether ether ketone layer and a graphite layer. 7 . The control valve according to claim 4 , wherein the piston core comprises a bottom plate and a side wall surrounding the bottom plate, the bottom plate is provided with a through hole, and the outer side wall of the connecting rod is provided with a through hole. 8 . a first snap portion and a second snap portion spaced apart from the first snap portion, the connecting rod passes through the through hole, and the first snap portion and the second snap portion snap together are arranged on opposite sides of the bottom plate. 8 . The control valve according to claim 7 , wherein the first snap portion is located on a side of the bottom plate that faces away from the valve plate, and the outer diameter of the first snap portion faces away from the valve plate. 9 . The direction of the valve plate gradually decreases. 9 . The control valve according to claim 2 , wherein the valve body comprises a valve seat and a valve body connected with the valve seat, the valve seat is provided with the flow channel, and the valve body is provided with the flow channel 9 . There are said mounting slots. 10. The control valve according to claim 9, wherein a side of the valve body away from the valve seat is provided with a mounting hole communicating with the mounting groove, and the air cylinder is mounted on the mounting hole through the mounting hole. installation slot. 11. The control valve of claim 10, wherein the control valve further comprises a fastener mounted on a side of the valve body away from the valve seat and partially extending to the In the installation hole, the fastener is used to compress the cylinder. 12 . The control valve according to claim 10 , wherein the control valve further comprises a first sealing ring, the first sealing ring is sandwiched between the valve body and the cylinder, and the first sealing ring is 12 . A sealing ring is used for sealing between the valve body and the cylinder. 13. The control valve according to claim 9, wherein the control valve further comprises a second sealing ring, the second sealing ring is sandwiched between the valve seat and the valve body, the The second sealing ring is used for sealing between the valve body and the valve seat. 14. A ventilator, characterized by comprising an air supply device, a pipeline and the control valve according to any one of claims 1 to 13, the air supply device ventilating with a patient through the pipeline, and the control valve is installed in the pipeline to control the flow of gas. 15. The ventilator according to claim 14, wherein the control valve is installed vertically, and the valve plate assembly is slidably connected with the valve body in the vertical direction. 16. A veterinary anesthesia breathing apparatus, characterized in that it comprises an air supply device, a pipeline and the control valve according to any one of claims 1 to 13, the air supply device is ventilated with the target through the pipeline, so The control valve is installed in the pipeline to control the flow of gas.

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