CN214008159U

CN214008159U - Switching valve

Info

Publication number: CN214008159U
Application number: CN202023282117.3U
Authority: CN
Inventors: 任大鹏
Original assignee: Nanjing Runze Fluid Control Equipment Co ltd
Current assignee: Nanjing Runze Fluid Control Equipment Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-20
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a diverter valve belongs to fluid control equipment technical field. Mainly including the disk seat, the valve head, case and driving medium, be equipped with public interface and a plurality of switching-over interface on the valve head, the case includes rotor case and valve core case, first connecting hole and second connecting hole have been seted up on the rotor case, set up the slot of the first connecting hole of intercommunication and second connecting hole on the terminal surface of rotor case valve head dorsad, be equipped with the round pin axle on the valve core case, the one end of valve core case is equipped with spherical groove, the driving medium includes the transmission shaft, the one end of transmission shaft towards the valve core case is equipped with the plummer, the constant head tank has been seted up on the plummer, the diverter valve still includes the ball that offsets with spherical groove and constant head tank and hold, still set up the breach that holds the round pin axle on the plummer, the diverter valve still supports the elastic component that leans on between plummer and disk seat. The utility model discloses a diverter valve can effectively reduce the influence of laminating plane wearing and tearing to the diverter valve gas tightness.

Description

Switching valve

Technical Field

The utility model relates to a fluid control equipment technical field, concretely relates to diverter valve.

Background

The switching valve changes the flow direction of the fluid by the relative movement between the rotor valve core and the stator valve core. In the existing switching valve, a long-strip-shaped groove is formed in the end face, abutted to the stator valve core, of the rotor valve core to communicate the public interface with the target reversing interface, but the groove pole occupying a large area of the end face of the rotor valve core is easily affected by abrasion of the joint plane of the rotor valve core and the stator valve core, so that fluid in the groove leaks.

There is a need to provide a switching valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: provided is a switching valve capable of effectively reducing the influence of wear of a bonding plane on the airtightness of the switching valve.

In order to solve the technical problem, the utility model discloses a as follows technical scheme be: a switching valve comprises a valve seat, a valve head, a valve core and a transmission piece, wherein the valve head, the valve core and the transmission piece are arranged on the valve seat; the improved switching valve is characterized in that a first connecting hole and a second connecting hole are formed in the rotor valve element, a groove for communicating the first connecting hole with the second connecting hole is formed in the end face, opposite to the valve head, of the rotor valve element, a pin shaft is arranged on the valve core seat, a spherical groove is formed in one end of the valve core seat, the transmission part comprises a transmission shaft, a bearing table is arranged at one end, facing the valve core seat, of the transmission shaft, a positioning groove is formed in the bearing table, the switching valve further comprises a ball which is abutted against the spherical groove and the positioning groove, a notch for accommodating the pin shaft is further formed in the bearing table, and the switching valve further comprises an elastic piece abutted against the position between the bearing table and the valve seat.

Furthermore, the valve core also comprises a stator valve core arranged on the inner end face of the valve head, and a plurality of drainage holes are formed in the stator valve core corresponding to the public interface and the reversing interface.

Furthermore, one end face of the rotor valve core, which is back to the groove, is abutted against the stator valve core, and a pin hole is formed in the rotor valve core, which corresponds to the valve core seat.

Furthermore, an installation groove is formed in one end, facing the rotor valve core, of the valve core seat, the rotor valve core is contained in the installation groove, and a pin block inserted in the pin hole is arranged in the installation groove.

Furthermore, the valve core also comprises a gasket, and the gasket is positioned at the bottom of the mounting groove and abuts against the end face of the rotor valve core with the groove.

Further, the positioning groove is a spherical groove.

Furthermore, the switching valve also comprises a bearing fixedly arranged in the valve seat, and two ends of the elastic piece are respectively abutted against the bearing and the bearing table.

Furthermore, the switching valve also comprises a locking ring which is detachably sleeved on the valve head and the valve seat, and the valve head is abutted and fixed on the valve seat through the locking ring.

Further, the elastic piece is a disc spring.

The utility model has the beneficial technical effects that: the utility model discloses an among the diverter valve, first connecting hole and second connecting hole seted up on the rotor case occupy minimum area on the terminal surface of rotor case towards the valve head to effectively reduced because the wearing and tearing of contact surface influence the probability of the regional gas tightness in first connecting hole and second connecting hole drill way, reduced the influence of laminating plane wearing and tearing to the diverter valve gas tightness promptly.

Drawings

The present invention will be further explained with reference to the drawings and examples.

In the figure:

fig. 1 is a perspective view of a switching valve according to the present invention;

FIG. 2 is an exploded view of the switching valve of FIG. 1;

FIG. 3 is another perspective view of the switching valve of FIG. 2;

FIG. 4 is a cross-sectional view of the switching valve of FIG. 1;

FIG. 5 is a cross-sectional view of a rotor spool in the switching valve of FIG. 2;

FIG. 6 is a schematic view of the transmission member of the switching valve shown in FIG. 2;

in the figure:

100. a valve seat.

200. A valve head; 210. a common interface; 220. and a reversing interface.

300. A valve core; 310. a stator valve core; 311. a drainage hole; 320. a rotor valve core; 321. a trench; 321. a first connection hole; 322. a second connection hole; 323. a trench; 324. a pin hole; 330. a valve core seat; 331. a pin shaft; 332. mounting grooves; 333. a pin block; 334. a spherical groove; 340. and (7) a gasket.

400. A transmission member; 410. a drive shaft; 411. a bearing table; 4111. a cavity; 4112. positioning a groove; 4113. and (4) a notch.

500. A ball bearing; 600. a bearing; 700. an elastic member; 800. and (4) locking the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the switching valve includes a valve seat 100, a valve head 200 mounted on one end of the valve seat 100, a valve core 300 disposed inside the valve seat 100, and a transmission member 400, wherein the valve head 200 is connected to an external pipeline, the transmission member 400 is connected to an external driving source in a transmission manner and transmits torque to the valve core 300, and the valve core 300 is driven to operate, thereby achieving a function of switching a fluid flow passage.

The valve seat 100 is generally a sleeve-like structure with two ends extending therethrough.

Referring to fig. 2 and 3, the valve head 200 is substantially cylindrical, a common connector 210 is disposed at the center of the valve head 200 along the axial direction of the valve head 200, a plurality of direction-changing connectors 220 are disposed on the valve head 200 along the circumferential direction of the valve head 200, the common connector 210 and the plurality of direction-changing connectors 220 both penetrate through two end faces of the valve head 200, and six direction-changing connectors 220 are provided in this embodiment.

The valve spool 300 includes a stator valve spool 310, a rotor valve spool 320 rotatable relative to the stator valve spool 310, and a valve spool seat 330.

Referring to fig. 3, the stator valve core 310 is substantially a disk-shaped structure, the stator valve core 310 is detachably mounted on the inner end surface of the valve head 200, a plurality of drainage holes 311 are formed in the stator valve core 310 corresponding to the common port 210 and the commutation port 220 on the valve head 200, the drainage holes 311 are communicated with the corresponding common port 210 or the commutation port 220, since the stator valve core 310 needs to contact and rub with the rotor valve core 320, the stator valve core 310 is made of an abrasion-resistant material, and in this embodiment, the stator valve core 310 is made of a sapphire material; the replaceable stator valve core 310 can avoid the abrasion of the rotor valve core 320 on the valve head 200, and only the stator valve core 310 with smaller volume needs to be replaced during maintenance, so that the later maintenance cost is saved.

The rotor valve core 320 is substantially in a disc-shaped structure, the rotor valve core 320 abuts against one end surface of the stator valve core 310, which faces away from the valve head 200, and referring to fig. 5, a first connection hole 321 corresponding to the common port 210 and a second connection hole 322 corresponding to the commutation port 220 are arranged on the rotor valve core 320 at intervals, the first connection hole 321 and the second connection hole 322 penetrate through two opposite end surfaces of the rotor valve core 320, and in the present embodiment, an axial line of the first connection hole 321 is collinear with an axial line of the rotor valve core 320; the rotor valve core 320 and the stator valve core 310 are attached to form an attachment plane, in addition, a groove 323 is formed in the end face, opposite to the stator valve core 310, of the rotor valve core 320, and the groove 323 is communicated with the first connecting hole 321 and the second connecting hole 322, so that when the rotor valve core 320 rotates relative to the stator valve core 310, the communication relation between the common interface 210 and the reversing interface 220 can be realized through the first connecting hole 321 and the second connecting hole 322 in the stator valve core 310; to facilitate the control of the rotation of the rotor valve core 320, a pin hole 324 is eccentrically disposed on an end surface of the rotor valve core 320 facing away from the stator valve core 310.

The valve core seat 330 is substantially cylindrical, one end of the valve core seat 330 facing the rotor valve core 320 is provided with a mounting groove 332 corresponding to the shape and size of the rotor valve core 320, the rotor valve core 320 is accommodated in the mounting groove 332, and the bottom of the mounting groove 332 is integrally connected with a pin block 333 inserted in the pin hole 324 of the rotor valve core 320, so that the rotor valve core 320 is circumferentially fixed on the valve core seat 330; in order to transmit torque to the valve core seat 330, a pin 331 is fixedly inserted into the valve core seat 330 in the radial direction of the valve core seat 330, and two ends of the pin 331 extend to the outer side of the valve core seat 330; in order to make the rotor valve core 320 self-adaptively abut against the stator valve core 310, the center of the end surface of the valve core seat 330 facing away from the rotor valve core 320 is provided with a spherical groove 334.

In a specific embodiment, the valve core 300 further includes a gasket 340 disposed between the valve core seat 330 and the rotor valve core 320, specifically, the gasket 340 is located at the bottom of the mounting groove 332 and abuts against an end surface of the rotor valve core 320 having the groove 323 for sealing the groove 323, so that the first connection hole 321, the groove 323, and the second connection hole 322 on the rotor valve core 320 form a fluid channel for connecting the common port 210 and the commutation port 220, and it is understood that the gasket 340 may be made of other sealing materials such as silicone or rubber.

Because the first drainage hole 131 and the second drainage hole 132 which are arranged on the rotor valve core 13 occupy extremely small areas on the end faces of the rotor valve core 13 and the stator valve core 310, the probability that the air tightness of the orifice areas of the first drainage hole 131 and the second drainage hole 132 is influenced due to abrasion of the contact surfaces of the valve cores is effectively reduced.

The transmission member 400 includes a transmission shaft 410, the transmission shaft 410 passes through the valve seat 100 and is accommodated in the valve seat 100, and more precisely, one end of the transmission shaft 410 facing the valve core seat 330 is integrally connected with a bearing table 411, in order to enable the transmission shaft 410 to move relative to the valve core seat 330, an end surface of the bearing table 411 close to the valve core seat 330 is provided with a cavity 4111 corresponding to the valve core seat 330, referring to fig. 6, a bottom of the cavity 4111 is provided with a positioning groove 4112 located on an axial line of the transmission shaft 410, the switching valve of the embodiment further includes a ball 500 movably disposed in the positioning groove 4112, so that the ball 500 is simultaneously abutted against a spherical groove 334 at an end of the valve core seat 330, and the transmission shaft 410 can swing around the ball 500 relative to the valve core seat 330, so that even if there is a mutual positional deviation between the transmission shaft 410 and the rotor valve core 320 installed on the valve core seat 330 due to other reasons such as inaccurate manufacturing and installation, the end surfaces of the rotor spool 320 that contact the stator spool 310 can also remain flush, while the ball 500 on the axis of the spool seat 330 and drive shaft 410 can correct for radial misalignment between the spool seat 330 and drive shaft 410.

In the present embodiment, positioning groove 4112 is a spherical groove that fits the surface of ball 500.

The position deviation between the transmission shaft 410 and the valve core seat 330 can be compensated, and the transmission shaft 410 and the rotor valve core 320 can be fixed in the circumferential direction, so that the rotor valve core 320 can be driven to rotate synchronously by the transmission shaft 410, two notches 4113 distributed along the radial direction of the bearing table 411 are formed in one end face, facing the valve core seat 330, of the bearing table 411, and the pin shaft 331 on the valve core seat 330 is accommodated in the notch 4113, so that a movable connection structure similar to a universal shaft is formed between the valve core seat 330 and the transmission shaft 410, when the position deviation exists between the valve core seat 330 and the transmission shaft 410, the transmission shaft 410 drives the rotor valve core 320 on the valve core seat 330 to rotate, and the rotor valve core 320 is ensured not to generate end face jumping, namely, the rotor valve core 320 can be always attached to the stator valve core 310; in order to ensure the angle accuracy of the synchronous rotation of the transmission shaft 410 and the rotor core 320, the pin 331 is slidably contacted with two side walls of the notch 4113, so that the deviation of the rotation angle between the rotor core 320 on the core seat 330 and the transmission shaft 410 is small when the rotor core and the transmission shaft rotate synchronously, and the rotation angle of the rotor core 320 can be accurately controlled by the rotation of the transmission shaft 410.

In order to reduce the friction between the transmission shaft 410 and the valve seat 100 when rotating, the switching valve of this embodiment further includes a bearing 600 fixedly installed in the valve seat 100 along the axial direction of the valve seat 100, and in order to provide a force for abutting the rotor valve element 320 against the stator valve element 310, the switching valve of this embodiment further includes an elastic member 700 sleeved on the transmission shaft 410, so that two ends of the elastic member 700 respectively abut against two opposite end faces of the bearing 600 and the plummer 411, when being installed in place, the rotor valve element 320 elastically abuts against the stator valve element 310 due to the elastic member 700 being in a compressed state, in this embodiment, the bearing 600 is a flat bearing, which can effectively bear an axial load, and the rotation of the transmission shaft 410 is smooth; in addition, the elastic member 700 is a disc spring in the present embodiment, and may be other elastic elements such as an elastic sheet or a compression spring in other embodiments not shown.

The utility model discloses a switching valve still includes detachably cover and locates locking ring 800 on valve head 200 and the disk seat 100, locking ring 800 and disk seat 100 threaded connection in this embodiment to make valve head 200 support and be fixed in on the disk seat 100 through locking ring 800.

The working process of the switching valve of the present invention is described below with reference to the accompanying drawings:

the transmission shaft 410 is rotated to drive the valve core case 330 and the rotor valve core 320 on the valve core case 330 to rotate at equal angles, so that the second connection hole 322 on the rotor valve core 320 is shifted in position along the circumferential direction, the first connection hole 321 is always communicated with the common interface 210, when the second connection hole 322 moves to be communicated with the target commutation interface 220, the common interface 210 is communicated with the target commutation interface 220, and when a fluid flow passage needs to be switched, the rotor valve core 320 only needs to be rotated continuously, so that the second connection hole 322 currently communicated with the commutation interface 220 corresponds to the next target commutation interface 220.

Therefore, the utility model discloses a diverter valve has following beneficial effect at least:

the first connecting hole 321 and the second connecting hole 322 which are arranged on the rotor valve core 320 occupy a very small area on the end surface of the rotor valve core 320 facing the valve head, so that the probability of influencing the air tightness of the orifice areas of the first connecting hole 321 and the second connecting hole 322 due to the abrasion of the contact surface is effectively reduced, namely, the influence of the abrasion of the attaching plane on the air tightness of the switching valve is reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a switching valve, includes the disk seat, installs valve head, case and the driving medium on the disk seat, be equipped with public interface and a plurality of switching-over interfaces on the valve head, the case includes rotor case and the case seat of valve head pivoted relatively, its characterized in that: the improved switching valve is characterized in that a first connecting hole and a second connecting hole are formed in the rotor valve element, a groove for communicating the first connecting hole with the second connecting hole is formed in the end face, opposite to the valve head, of the rotor valve element, a pin shaft is arranged on the valve core seat, a spherical groove is formed in one end of the valve core seat, the transmission part comprises a transmission shaft, a bearing table is arranged at one end, facing the valve core seat, of the transmission shaft, a positioning groove is formed in the bearing table, the switching valve further comprises a ball which is abutted against the spherical groove and the positioning groove, a notch for accommodating the pin shaft is further formed in the bearing table, and the switching valve further comprises an elastic piece abutted against the position between the bearing table and the valve seat.

2. A switching valve according to claim 1, characterized in that: the valve core further comprises a stator valve core arranged on the inner end face of the valve head, and a plurality of drainage holes are formed in the stator valve core corresponding to the public interface and the reversing interface.

3. A switching valve according to claim 2, characterized in that: one end face of the rotor valve core, which is back to the groove, is abutted against the stator valve core, and a pin hole is formed in the rotor valve core corresponding to the valve core seat.

4. A switching valve according to claim 3, characterized in that: the rotor valve core is accommodated in the mounting groove, and a pin block inserted in the pin hole is arranged in the mounting groove.

5. A switching valve according to claim 4, characterized in that: the valve core further comprises a gasket, and the gasket is located at the bottom of the mounting groove and abuts against the end face, with the groove, of the rotor valve core.

6. A switching valve according to claim 1, characterized in that: the positioning groove is a spherical groove.

7. A switching valve according to claim 1, characterized in that: the switching valve further comprises a bearing fixedly installed in the valve seat, and two ends of the elastic piece are respectively abutted against the bearing and the bearing table.

8. A switching valve according to claim 1, characterized in that: the switching valve also comprises a locking ring which is detachably sleeved on the valve head and the valve seat, and the valve head is abutted and fixed on the valve seat through the locking ring.

9. A switching valve according to claim 1, characterized in that: the elastic piece is a disc spring.