CN204573192U - A kind of fluid is communicated with COMM communication - Google Patents

Abstract

The utility model discloses a fluid communication switching device, which relates to the technical field of fluid pipeline control. The problem to be solved is to solve the problem of fluid wear debris treatment and improve the service life of the fluid communication switching device. The technical solution mainly adopted is: a housing, which has a top wall and a surrounding wall, and the inner surface of the surrounding wall is provided with a first receiving groove; the fixed valve core is disposed in the housing; the movable valve core is disposed in the In the housing, the first end surface of the movable valve core is in contact with the first end surface of the fixed valve core; the retaining ring is arranged in the first receiving groove, and is located between the movable valve core and the first end surface. between the accommodation slots; the rotary connector, connected with the movable valve core; the drive device, which includes a drive shaft, connected with the rotary connector; the position selection device, used to control the rotation of the drive device. The utility model is mainly used in the technical field of fluid analysis.

Description

A fluid communication switching device

technical field

The utility model relates to the technical field of fluid pipeline control, in particular to a fluid communication switching device.

Background technique

The existing fluid communication switching device includes a housing, a fixed valve core disposed in the housing, a movable valve core disposed in the housing, and a driving device disposed in the housing. When the fixed valve core and the dynamic valve core are tightly sealed Next, when the movable spool rotates to different angles under the drive of the driving device, the multiple fluid passages on the fixed spool communicate correspondingly through the guide grooves on the movable spool to realize the switching control of the fluid. Due to the long-term use of the fluid communication switching device, fluid debris will be generated at the joint between the fixed valve core and the moving valve core. If the fluid debris exists in the fluid communication switching device for a long time, it will corrode the components in the fluid communication switching device , resulting in a short service life of the fluid communication switching device.

Contents of the invention

In view of this, the utility model provides a fluid communication switching device, the main purpose of which is to solve the problem of fluid debris treatment and improve the service life of the fluid communication switching device.

In order to achieve the above object, the utility model mainly provides the following technical solutions:

In one aspect, an embodiment of the present invention provides a fluid communication switching device, which includes:

The housing has a top wall and a surrounding wall, the top wall has a plurality of pipe holes, and the inner surface of the surrounding wall is provided with a first receiving groove;

The fixed valve core is arranged in the housing; the inside of the fixed valve core is provided with a plurality of fluid passages, and the plurality of fluid passages respectively have first inlets and outlets communicating with the plurality of tube holes one by one, and the plurality of The fluid passages respectively have second inlets and outlets arranged on the first end surface of the fixed valve core;

The movable valve core is arranged in the housing; the first end surface of the movable valve core is in contact with the first end surface of the fixed valve core, and the first end surface of the movable valve core is provided with one or more guide groove;

a retaining ring, arranged in the first accommodation groove, and located between the movable valve core and the first accommodation groove;

a rotary connecting piece connected with the movable valve core and used to drive the movable valve core to rotate;

A driving device, which includes a drive shaft, the drive shaft is connected to the rotary connector, and is used to drive the rotary connector to rotate;

position selection means for controlling rotation of said drive means;

Wherein, when the driving device drives the rotary connector to rotate so as to drive the movable valve core to rotate to different angles, the plurality of second inlets and outlets communicate with each other through the one or more guide grooves correspondingly. .

As mentioned above, it also includes: a pre-tightening mechanism, which includes an elastic device and a pre-tightening fixture;

The elastic device is arranged on the rotating connector;

The pre-tightening fixture is fixed on the driving device and connected with the housing.

As mentioned above, the inner surface of the surrounding wall is provided with a second accommodating groove, and the second accommodating groove corresponds to the fitting place of the fixed valve core and the movable valve core.

As mentioned above, at least one guide hole is provided on the outer surface of the surrounding wall, and the at least one guide hole communicates with the second receiving groove inside the surrounding wall.

As mentioned above, the rotating connector includes a tray and a rotating shaft;

The connection between the rotating connector and the moving valve core is specifically:

The movable valve core is connected with the tray;

The connection between the drive shaft and the rotary connector is specifically:

The driving shaft is connected to the rotating shaft;

The elastic device is arranged on the rotating connector specifically as follows:

The elastic device is arranged on the rotating shaft.

As mentioned above, the second end surface of the movable valve core is provided with a third receiving groove;

A raised portion is provided in the middle of the upper surface of the bottom of the tray;

The connection between the movable spool and the tray is as follows:

The protruding portion is engaged with the third accommodating groove.

As mentioned above, the preload mechanism also includes a plane bearing;

The plane bearing shown is arranged on the drive shaft; and is located between the elastic device and the pre-tensioning fixing member; or,

The plane bearing is arranged on the rotating shaft and located between the tray and the elastic device.

As mentioned above, it also includes: a plurality of intrusion-type conduits, each of the intrusion-type conduits is inserted into the corresponding fluid channel through the corresponding tube hole.

With the above technical solution, a fluid communication switching device of the present invention has at least the following advantages:

In the fluid communication switching device of the present invention, a first accommodation groove is provided on the inner surface of the surrounding wall, and the retaining ring is arranged in the first accommodation groove, so that the retaining ring is located between the movable valve core and the first accommodation groove, so that the fluid is connected When the switching device is in use, if fluid debris flows out from the joint between the driven valve core and the fixed valve core and flows along the side wall of the movable valve core, the retaining ring can prevent the flow of fluid debris and prevent the fluid debris from flowing along the side wall of the movable valve core. The side wall of the movable spool flows toward other components in the casing, thereby preventing fluid debris from corroding other components. The design of this structure improves the service life of the fluid communication switching device.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. rear.

Description of drawings

Fig. 1 is a schematic structural diagram of a fluid communication switching device provided by an embodiment of the present invention;

Fig. 2 is a bottom view of a fixed valve core provided by the embodiment of the present invention;

Fig. 3 is a top view of a movable valve core provided by an embodiment of the present invention;

Fig. 4 is a bottom view of another fixed valve core provided by the embodiment of the present invention;

Fig. 5 is a top view of another movable valve core provided by the embodiment of the present invention;

Fig. 6 is a bottom view of another fixed valve core provided by the embodiment of the present invention;

Fig. 7 is a top view of another movable valve core provided by the embodiment of the present invention;

Fig. 8 is a schematic structural diagram of another fluid communication switching device according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of a connection structure between a movable valve core and a rotary connector provided by an embodiment of the present invention.

detailed description

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the specific implementation, structure, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. The description is as follows. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

As shown in Figure 1, an embodiment of the utility model proposes a fluid communication switching device, which includes: a housing 1, a fixed valve core 2, a moving valve core 3, a retaining ring 4, a rotating connector 5, and a driving device 6 and a position selection device (not shown in the figure). in,

The housing 1 has a top wall 11 and a surrounding wall 12, the top wall 11 has a plurality of tube holes 111, and the inner surface of the surrounding wall 12 is provided with a first receiving groove 121;

The fixed spool 2 is arranged in the housing 1; the fixed spool 2 is provided with a plurality of fluid passages 21 inside, and the plurality of fluid passages 21 respectively communicate with the plurality of tube holes 111 one by one. The first inlet and outlet 211 of the plurality of fluid passages 21 respectively have second inlets and outlets 212 arranged on the first end surface of the fixed valve core (not shown in the figure);

The movable spool 3 is arranged in the housing 1; the first end surface of the movable spool (not shown in the figure) is in contact with the first end surface of the fixed spool, and the first end surface of the movable spool One or more diversion grooves 31 are arranged on it;

The retaining ring 4 is arranged in the first accommodation groove 121 and is located between the movable valve core 3 and the first accommodation groove 121;

A rotary connector 5 is connected with the movable valve core 3 and is used to drive the movable valve core 3 to rotate;

The drive device 6 includes a drive shaft 61, the drive shaft 61 is connected to the rotary connector 5, and is used to drive the rotary connector 5 to rotate;

a position selection device for controlling the rotation of the driving device 6;

Wherein, when the driving device 6 drives the rotating connecting member 5 to rotate so as to drive the movable valve core 3 to turn to different angles, the plurality of second inlets and outlets 212 pass through the one or more guides. The launders 31 communicate correspondingly.

In the embodiment of the utility model, the first accommodation groove 121 is provided on the inner surface of the surrounding wall 12, and the retaining ring 4 is arranged in the first accommodation groove 121, so that the retaining ring 4 is located between the movable valve core 3 and the first accommodation groove 121 , so that when the fluid communication switching device is in use, if fluid wear debris flows out from the joint between the driven valve core 3 and the fixed valve core 2 and flows along the side wall of the movable valve core 3, the retaining ring 4 can prevent the fluid wear debris The flow of debris prevents fluid debris from flowing along the side wall of the movable valve core 3 to other components in the housing, thereby preventing fluid debris from corroding other components. The design of this structure improves the service life of the fluid communication switching device.

Further, the multiple fluid channels 21 have multiple layouts, and the flow guide groove 31 also has multiple layouts, wherein the layout of the flow guide groove 31 changes accordingly with the change of the layout of the multiple fluid channels 21 .

A layout of multiple fluid passages 21 and diversion grooves 31 is as follows:

As shown in Figure 2, one of the plurality of fluid passages 21 is set at the center of the fixed spool 2, and the other fluid passages are evenly distributed _on the circumference of the radius S1 with the center of the fixed spool 2 as a dot;

As shown in Figure 3, one end of the diversion groove 31 is arranged at the center of the first end face of the movable valve core, and the length of the diversion groove 31 is equal to the length of S1, wherein the number of the diversion groove 31 is _one ;

When the driving device 6 drives the rotating connector 5 to rotate so as to drive the valve core 3 to turn to different angles, the second inlet and outlet 212 corresponding to the fluid passage in the center of the fixed valve core 2 are selected from other fluid passages through the diversion groove 31. Connected in one place.

Another layout of multiple fluid channels 21 and diversion grooves 31 is as follows:

As shown in Figure 4, a plurality of fluid passages 21 are evenly distributed on a circle with a radius of S2 with the center of the fixed spool ₂ as a dot, and the distance between a plurality of second inlets and outlets 212 is equal;

As shown in Figure 5, taking the center of the first end face of the movable valve core as a circle point, the diversion groove 31 is arranged _on a circle whose radius is S2, and the length of the diversion groove 31 is equal to the distance between a plurality of second inlets and outlets 212. The distance, wherein, the number of diversion grooves 31 can be one or more, which is not limited by the specific embodiment of the present utility model, and can be set according to requirements.

When the driving device 6 drives the rotating connecting member 5 to rotate so as to drive the movable valve core 3 to rotate to different angles, the plurality of second inlets and outlets 212 communicate with each other through one or more guide grooves 31 correspondingly.

Yet another layout of multiple fluid channels 21 and diversion grooves 31 is as follows:

As shown in Figure 6, a part of the fluid passages in the plurality of fluid passages 21 take the center of the fixed spool 2 as the center, and are evenly distributed _on a circle with a radius of S3, and the other part of the fluid passages take the center of the fixed spool 2 as the center of the circle. , evenly distributed on a circle with a radius of S ₄ ; where S ₃ is smaller than S ₄ ;

As shown in Figure 7, with the center of the first end face of the movable valve core as a circle point, one end of the diversion groove 31 is arranged _on a circle with a radius of S3, and the other end is arranged _on a circle with a radius of S4, and the diversion groove The length of ₃₁ is equal to the distance between S4 and S3, wherein there are one or more guide grooves ₃₁ , which are not limited in specific embodiments of the present utility model, and can be set according to requirements.

When the driving device 6 drives the rotating connecting member 5 to rotate so as to drive the movable valve core 3 to rotate to different angles, the plurality of second inlets and outlets 212 communicate with each other through one or more guide grooves 31 correspondingly.

Of course, in addition to the above several layout methods, the plurality of fluid channels 21 and diversion grooves 31 also include other layout methods, and the above several layout methods can also be arbitrarily combined and combined, and the specific embodiment of the utility model does not limit this , as long as it can perform fluid switching, it belongs to the protection scope of the embodiments of the present utility model.

Further, in order to keep the movable valve core in surface contact with the fixed valve core, so as to achieve good sealing performance, the fluid communication switching device also includes: a pre-tension mechanism 7, as shown in Figure 8, the pre-tension mechanism 7, which includes The elastic device 71 and the pre-tightening fixing part 72 ; the elastic device 71 is arranged on the rotating connection part 5 ; the pre-tightening fixing part 72 is fixed on the driving device 6 and connected with the housing 1 .

Specifically, the pre-tightening fixture 72 is threadedly connected to the housing 1. When using the fluid communication switching device of the present utility model, the pre-tightening fixture 72 is first screwed into the housing 1, and then the pre-tightening fixture 72 is screwed into the shell. In the process of body 1, the pre-tightened fixing part 72 is pressed to the elastic device 71, and the elastic device 71 is compressed and then pressed to the rotating connecting part 5, and the rotating connecting part 5 is pressed to the moving valve core 3, and the moving valve core 3 is pressed to the fixed valve core 2. The fixed valve core 2 is pressed against the top wall 11, so that the movable valve core 3 and the fixed valve core 2 can achieve a good seal. Of course, the pre-tightening fixing part 72 and the housing 1 can also be connected in other ways, such as a snap-in connection. The specific embodiment of the utility model does not limit this as long as it can make the movable valve core and the fixed valve core maintain uniform surface contact. Belong to the protection scope of the utility model embodiment.

Further, the elastic device 71 can be a disc spring or a spring, which is not limited in the specific embodiment of the present utility model, as long as it has elasticity, it belongs to the protection scope of the embodiment of the present utility model.

Further, in order to prevent fluid debris from corroding the components in the fluid communication switching device and affecting the service life of the fluid communication switching device, the inner surface of the surrounding wall 12 is provided with a second accommodation groove 122, as shown in FIG. 8 , the The second accommodating groove 122 corresponds to the joint of the fixed valve core 2 and the movable valve core 3, and the design of this structure can make the fluid debris flowing out from the joint of the fixed valve core 2 and the movable valve core 3 accumulate In the second receiving groove 122 , the fluid debris is prevented from flowing to other components along the side wall of the movable valve core 3 , thereby preventing the fluid debris from corroding components in the fluid communication switching device.

Further, in order to facilitate the discharge of fluid debris, the outer surface of the surrounding wall 12 is provided with a diversion hole 123, as shown in Figure 8, the diversion hole 123 communicates with the first Two receiving grooves 122, in which there may be one or more guide holes 123, which are not limited in the specific embodiment of the present utility model, and can be set according to requirements.

Further, the rotating connector 5 includes a tray 51 and a rotating shaft 52; as shown in FIG. 8 ,

The movable valve core 3 is connected with the tray 51 ; the driving shaft 61 is connected with the rotating shaft 52 ; the elastic device 71 is arranged on the rotating shaft 52 and can slide up and down on the rotating shaft 52 .

Wherein, the tray 51 and the rotating shaft 52 can be an integral structure or a detachable structure. The specific embodiment of the utility model does not limit this, as long as it can drive the dynamic valve core 3 to rotate, it belongs to the implementation of the utility model. example of the scope of protection.

Further, as shown in FIG. 9 , the movable valve core 3 is an inverted convex structure, and the tray 51 is a concave structure, and the convex part of the movable valve core 3 is inserted into the concave structure of the tray 51 to form an anti-rotation connection. Of course, the movable valve core 3 can also be a concave structure, the tray 51 is a convex structure, and the convex part of the tray 51 is inserted into the concave structure of the movable valve core 3. The specific embodiment of the utility model does not limit this, as long as the movable The anti-rotation connection between the valve core and the rotary connector belongs to the protection scope of the embodiment of the present invention.

Further, in order to make the connection between the rotary connector 5 and the movable valve core 3 more flexible, the second end surface of the movable valve core (not shown in the figure) is provided with a third receiving groove 32; as shown in FIG. 9 , A protruding portion 511 is provided in the middle of the bottom upper surface of the tray 51 ; the protruding portion 511 is engaged with the third receiving groove 32 .

Further, the protruding part 511 may be a spherical structure or a polygonal structure, which is not limited in the specific embodiment of the present utility model, and may be set according to requirements.

Further, in order to prevent friction between the pre-tightening fixture 72 and the elastic device 71 during the rotation of the rotating connection part 5 and the drive shaft 61, which will affect the service life of the fluid communication switching device, the pre-tightening mechanism 7 also includes a plane Bearing 73; As shown in Figure 8,

The plane bearing 73 shown is arranged on the drive shaft 61; and is located between the elastic device 71 and the pre-tightening fixture 72, or, the plane bearing 73 can also be arranged on the rotating shaft 52, And located between the tray 51 and the elastic device 71 . The specific embodiments of the present invention are not limited to this, as long as it can prevent the friction between the pre-tightening fixture and the elastic device, it belongs to the protection scope of the embodiments of the present invention.

Further, the fluid communication switching device further includes: a plurality of intrusion-type conduits 8 , each of the intrusion-type conduits 8 is sequentially inserted into the corresponding fluid channel 21 through the corresponding tube hole 111 .

Further, the position selection device includes a position identification body 9 and a control circuit (not shown in the figure), as shown in Figure 8, the position identification body 9 is arranged on the movable valve core 3, or the position identification body 9 is arranged on the rotating connector 5, the specific embodiment of the present invention does not limit this, as long as it can select the position, it all belongs to the protection scope of the embodiment of the present invention, and the control circuit is arranged on the surrounding wall 12 on the outside.

Further, the position identification body 9 is a photoelectric code disc.

In the embodiment of the present invention, a first accommodation groove is provided on the inner surface of the surrounding wall, and the retaining ring is arranged in the first accommodation groove, so that the retaining ring is located between the movable valve core and the first accommodation groove, so that the fluid communication switching device is in the When in use, if fluid debris flows out from the joint between the movable valve core and the fixed valve core, and flows along the side wall of the movable valve core, the retaining ring can prevent the flow of fluid debris and prevent the fluid debris from flowing along the movable valve core. The side wall of the core flows in the direction of other components in the casing, thereby preventing the fluid debris from corroding other components. The design of this structure improves the service life of the fluid communication switching device.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model are all valid. Still belong to the scope of the technical solution of the utility model.

Claims (8)

1. A fluid communication switching apparatus, comprising:

the shell is provided with a top wall and a surrounding wall, the top wall is provided with a plurality of pipe holes, and the inner surface of the surrounding wall is provided with a first accommodating groove;

the fixed valve core is arranged in the shell; a plurality of fluid channels are arranged in the fixed valve core, the fluid channels are respectively provided with a first inlet and a first outlet which are communicated with the pipe holes in a one-to-one correspondence mode, and the fluid channels are respectively provided with a second inlet and a second outlet which are arranged on the first end face of the fixed valve core;

the first end surface of the movable valve core is in surface contact fit with the first end surface of the fixed valve core, and one or more diversion trenches are formed in the first end surface of the movable valve core;

the check ring is arranged in the first accommodating groove and is positioned between the movable valve core and the first accommodating groove;

the rotary connecting piece is connected with the movable valve core and is used for driving the movable valve core to rotate;

the driving device comprises a driving shaft, and the driving shaft is connected with the rotary connecting piece and is used for driving the rotary connecting piece to rotate;

position selection means for controlling the rotation of the drive means;

when the driving device drives the rotary connecting piece to rotate so as to drive the movable valve core to rotate to different angles, the plurality of second inlets and outlets are correspondingly communicated with each other through the one or more guide grooves.

2. The fluid communication switching device according to claim 1, further comprising:

the pre-tightening mechanism comprises an elastic device and a pre-tightening fixing piece;

the elastic device is arranged on the rotary connecting piece;

the pre-tightening fixing piece is fixed on the driving device and connected with the shell.

3. The fluid communication switching device according to claim 1 or 2,

and a second accommodating groove is formed in the inner surface of the surrounding wall and corresponds to the matching position of the fixed valve core and the movable valve core.

4. The fluid communication switching device according to claim 3,

the outer surface of the surrounding wall is provided with at least one diversion hole, and the at least one diversion hole is communicated with the second accommodating groove in the surrounding wall.

5. The fluid communication switching device according to claim 2,

the rotary connecting piece comprises a tray and a rotary shaft;

the connection of the rotary connecting piece and the movable valve core is specifically as follows:

the movable valve core is connected with the tray;

the drive shaft with the swivel connected coupler is specifically:

the driving shaft is connected with the rotating shaft;

the elastic device is arranged on the rotary connecting piece and specifically comprises:

the elastic device is arranged on the rotating shaft.

6. The fluid communication switching device according to claim 5,

a third accommodating groove is formed in the second end face of the movable valve core;

a convex part is arranged in the middle of the upper surface of the bottom of the tray;

the connection of the movable valve core and the tray is as follows:

the protruding part is connected with the third accommodating groove in a clamping mode.

7. The fluid communication switching device according to claim 6,

the pre-tightening mechanism further comprises a plane bearing;

the plane bearing is arranged on the driving shaft and is positioned between the elastic device and the pre-tightening fixing piece; or,

the plane bearing is arranged on the rotating shaft and is positioned between the tray and the elastic device.

8. The fluid communication switching device according to claim 1, further comprising:

a plurality of extruded conduits, each of the extruded conduits inserted through a corresponding one of the tube bores into a corresponding one of the fluid channels.