CN216158360U - Rotary valve - Google Patents

Abstract

The utility model provides a rotary valve, which comprises a valve structure, wherein the valve structure comprises: the valve seat is provided with a valve cavity and at least three valve ports; the sealing element is arranged in the valve cavity and provided with a plurality of overflowing holes, the sealing element is abutted against the inner wall of the valve cavity, and the overflowing holes of each sealing element are respectively communicated with one valve port; the valve core comprises a core body which is rotatably arranged in the valve cavity, the core body is of a cylindrical structure and is provided with at least one flow channel, and the peripheral surface of the core body is provided with a sealing surface; under the condition that the flow passage corresponds to the flow holes of the two sealing elements, the flow passage communicates the two flow holes, and the sealing surface abuts against the other sealing elements of the valve structure to block the flow holes corresponding to the sealing surface; the side of the sealing element facing the valve core is provided with a cambered surface for sealing, and the shape of the cambered surface is matched with that of the sealing surface. Through this technical scheme, can solve among the prior art rotation type valve seal effect poor problem.

Description

Rotary valve

Technical Field

The utility model relates to the technical field of valves, in particular to a rotary valve.

Background

At present, most valve cores of rotary valves in the prior art are spherical structures, and the spherical structures are difficult to form and difficult to process; moreover, the valve core and the valve port are not in sealing fit when closed, so that leakage is easily caused, the sealing effect of the valve is poor, and the normal use of the valve is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotary valve, which aims to solve the problem of poor sealing effect of the rotary valve in the prior art.

In order to solve the above problems, the present invention provides a rotary valve including a valve structure, the valve structure including: the valve seat is provided with a valve cavity and at least three valve ports; the sealing element is arranged in the valve cavity and provided with a plurality of overflowing holes, the sealing element is abutted against the inner wall of the valve cavity, and the overflowing holes of each sealing element are respectively communicated with one valve port; the valve core comprises a core body which is rotatably arranged in the valve cavity, the core body is of a cylindrical structure and is provided with at least one flow channel, and the peripheral surface of the core body is provided with a sealing surface; under the condition that the flow passage corresponds to the flow holes of the two sealing elements, the flow passage communicates the two flow holes, and the sealing surface abuts against the other sealing elements of the valve structure to block the flow holes corresponding to the sealing surface; the side of the sealing element facing the valve core is provided with a cambered surface for sealing, and the shape of the cambered surface is matched with that of the sealing surface.

Further, the valve seat comprises a seat body and a plurality of limiting structures, the seat body is provided with a valve cavity and a valve port, the limiting structures are arranged on the inner wall of the valve cavity, and the limiting structures and the sealing elements are in one-to-one corresponding limiting fit.

Further, the sealing member has first spacing groove and the second spacing groove of interval setting, and the discharge orifice is located between first spacing groove and the second spacing groove, and limit structure includes: the first limiting plate is arranged on the inner wall of the valve cavity; the second limiting plate is arranged on the inner wall of the valve cavity, and the sealing element is positioned between the first limiting plate and the second limiting plate; the first limiting rib is arranged on the first limiting plate and clamped into the first limiting groove; and the second limiting rib is arranged on the second limiting plate, and the second limiting rib is clamped into the second limiting groove.

Further, the sealing member has first spacing bellying and the spacing bellying of second of interval setting, and the discharge orifice is located between first spacing bellying and the spacing bellying of second, and limit structure includes: the first limiting plate is arranged on the inner wall of the valve cavity; the second limiting plate is arranged on the inner wall of the valve cavity, and the sealing element is positioned between the first limiting plate and the second limiting plate; the first limiting concave part is arranged on the first limiting plate, and the first limiting convex part is clamped in the first limiting concave part; and the second limiting concave part is arranged on the second limiting plate, and the second limiting convex part is clamped into the second limiting concave part.

Furthermore, the flow channel is a slot, the number of the valve ports is N, the slot is of a fan-shaped structure, and the angle of the slot is theta, wherein theta is 360/N.

Further, the valve seat is of an integrated structure and comprises a seat body and a plurality of connecting pipes, the seat body is provided with a valve cavity and valve ports, and the connecting pipes are communicated with the valve ports in a one-to-one correspondence mode.

Further, the rotary valve further comprises: the driving part comprises a shell and a transmission structure arranged in the shell, and the transmission structure is in driving connection with the valve core so as to drive the valve core to rotate; the valve cover is of an integrated structure, one side of the valve cover is connected with the valve seat, and the other side of the valve cover is connected with the shell.

Further, the valve core also comprises a connecting shaft, and the connecting shaft is provided with a plurality of external teeth; the transmission structure comprises an output shaft, the output shaft is provided with a matching hole, and the inner wall of the matching hole is provided with a plurality of internal teeth; wherein the plurality of external teeth extend into the mating hole and are engaged with the plurality of internal teeth.

Further, the valve cover includes: the valve core is provided with a valve seat, and the valve core is provided with a plurality of connecting holes; the connecting columns are arranged on the main body and surround the valve core, and each connecting column is connected with the shell.

Furthermore, the valve seat is provided with a sealing groove which is arranged around the valve core, and the rotary valve also comprises a sealing ring which is arranged in the sealing groove; the main part includes the plate body and sets up the clamping ring on the plate body, plate body and disk seat butt, and the clamping ring is located the seal groove and pushes down the sealing washer.

The technical scheme of the utility model is applied, and the rotary valve comprises a valve structure, wherein the valve structure comprises: the valve seat is provided with a valve cavity and at least three valve ports; the sealing element is arranged in the valve cavity and provided with a plurality of overflowing holes, the sealing element is abutted against the inner wall of the valve cavity, and the overflowing holes of each sealing element are respectively communicated with one valve port; the valve core comprises a core body which is rotatably arranged in the valve cavity, the core body is of a cylindrical structure and is provided with at least one flow channel, and the peripheral surface of the core body is provided with a sealing surface; under the condition that the flow passage corresponds to the flow holes of the two sealing elements, the flow passage communicates the two flow holes, and the sealing surface abuts against the other sealing elements of the valve structure to block the flow holes corresponding to the sealing surface; the side of the sealing element facing the valve core is provided with a cambered surface for sealing, and the shape of the cambered surface is matched with that of the sealing surface. By adopting the scheme, the sealing element is abutted against the inner wall of the valve cavity, and the sealing surface is arranged on the outer peripheral surface of the core body, so that the sealing element can be tightly attached to the inner wall and the sealing surface of the valve cavity when the valve port is plugged, liquid leakage is avoided, and the sealing effect is improved. The core body is set to be a cylindrical structure, so that the forming difficulty is small, and the processing is easy. The sealing element is provided with an overflowing hole, so that the liquid can be ensured to smoothly pass through; the valve core is rotatably arranged in the valve cavity, and the connection or disconnection of adjacent valve ports can be realized. The arrangement of the circulation channel on the core body can ensure that two adjacent overflowing holes are communicated, so that two adjacent valve ports are communicated, and meanwhile, the sealing surface is abutted against other sealing elements, so that other valve ports are blocked.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a rotary valve according to an embodiment of the present invention;

FIG. 2 shows a cross-sectional view of the rotary valve of FIG. 1;

FIG. 3 shows a schematic diagram of the valve structure of FIG. 1;

FIG. 4 shows a schematic structural view of the valve seat of FIG. 3;

FIG. 5 shows a schematic structural view of the seal of FIG. 3;

FIG. 6 shows a schematic of the valve cartridge of FIG. 3;

FIG. 7 shows a cross-sectional view of the valve cartridge of FIG. 6;

FIG. 8 shows a schematic diagram of the relative positions of the poppet and seat of FIG. 1 in one state;

FIG. 9 shows a schematic view of the relative positions of the poppet and seat of FIG. 1 in another state;

fig. 10 shows a schematic configuration diagram of the driving part in fig. 1.

Wherein the figures include the following reference numerals:

10. a valve structure; 11. a valve seat; 111. a valve port; 112. a valve cavity; 113. a base body; 114. a limiting structure; 1141. a first limit plate; 1142. a second limiting plate; 1143. a first limiting rib; 1144. a second limiting rib; 115. taking over a pipe; 116. a sealing groove; 12. a valve core; 121. a core body; 1211. grooving; 1212. a sealing surface; 122. a connecting shaft; 13. a seal member; 131. an overflowing hole; 132. a first limit groove; 133. a second limit groove;

20. a drive section; 21. a housing; 22. a transmission structure; 221. an output shaft; 2211. a mating hole;

30. a valve cover; 31. a main body; 311. a plate body; 316. pressing a ring; 32. connecting columns;

43. and (5) sealing rings.

Detailed Description

The technical solution 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. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, an embodiment of the present invention provides a rotary valve including a valve structure 10, the valve structure 10 including: a valve seat 11, the valve seat 11 having a valve chamber 112 and at least three valve ports 111; the sealing element 13 is arranged in the valve cavity 112, the sealing element 13 is provided with an overflowing hole 131, the sealing element 13 is abutted with the inner wall of the valve cavity 112, the number of the sealing elements 13 is multiple, and the overflowing hole 131 of each sealing element 13 is respectively communicated with one valve port 111; the valve core 12, the valve core 12 includes a core body 121 rotatably disposed in the valve cavity 112, the core body 121 is a cylindrical structure, the core body 121 has at least one flow channel, and the outer peripheral surface of the core body 121 has a sealing surface 1212; when the flow channel corresponds to the flow holes 131 of the two sealing members 13, the flow channel connects the two flow holes 131, and the sealing surface 1212 abuts against the other sealing members 13 of the valve structure 10 to block the flow holes 131 corresponding to the sealing surface 1212; wherein, the side of the sealing element 13 facing the valve core 12 is provided with an arc surface for sealing, and the shape of the arc surface is matched with that of the sealing surface 1212.

By adopting the scheme, the sealing element 13 is abutted against the inner wall of the valve cavity 112, and the sealing surface 1212 is arranged on the outer peripheral surface of the core body 121, so that the sealing element 13 can be tightly attached to the inner wall of the valve cavity 112 and the sealing surface 1212 when the valve port 111 is sealed, liquid leakage is avoided, and the sealing effect is improved. Set up core 121 into cylindric structure, the shaping degree of difficulty is little, easily processing. The sealing element 13 is provided with an overflowing hole 131 which can ensure that liquid can smoothly pass through; the valve core 12 is rotatably arranged in the valve cavity 112, and can realize the connection or disconnection of the adjacent valve ports 111. The flow channel on the core 121 is configured such that when the flow channel is communicated with two adjacent flow holes 131, the two flow holes 131 are communicated with the flow channel, so that the two adjacent flow holes 131 are communicated to communicate two adjacent valve ports 111, and at the same time, the sealing surface 1212 abuts against the remaining sealing member 13 to block the remaining valve ports 111. Wherein, set up the cambered surface with one side of sealing member 13 towards case 12, and the cambered surface shape matches with the shape of sealed face 1212, has improved the laminating degree of sealing member 13 with sealed face 1212 effectively to strengthened the leakproofness of sealing member 13 with sealed face 1212, avoided fluid leakage like this, and then improved rotary valve's result of use.

Specifically, the valve seat 11 includes a seat body 113 and a plurality of limit structures 114, the seat body 113 has a valve cavity 112 and a valve port 111, the limit structures 114 are disposed on an inner wall of the valve cavity 112, and the limit structures 114 and the sealing elements 13 are in one-to-one corresponding limit fit. Through setting up a plurality of limit structure 114, when a plurality of sealing member 13 and a plurality of limit structure 114 assembly, can play direction and spacing effect to a plurality of sealing member 13. The position-limiting structure 114 and the inner wall of the valve cavity 112 can be an integral structure, which is convenient for processing and reduces the cost.

Wherein, the sealing member 13 has a first limiting groove 132 and a second limiting groove 133 arranged at intervals, the overflowing hole 131 is located between the first limiting groove 132 and the second limiting groove 133, and the limiting structure 114 includes: a first limit plate 1141 disposed on an inner wall of the valve chamber 112; a second retainer plate 1142 disposed on the inner wall of the valve chamber 112, the sealing member 13 being located between the first retainer plate 1141 and the second retainer plate 1142; a first limiting rib 1143 disposed on the first limiting plate 1141, the first limiting rib 1143 being clamped into the first limiting groove 132; and a second limiting rib 1144 disposed on the second limiting plate 1142, wherein the second limiting rib 1144 is engaged with the second limiting groove 133.

In this scheme, go into first spacing groove 132 and the second spacing groove 133 that sets up on sealing member 13 with first spacing muscle 1143 and second spacing muscle 1144 card respectively, can make sealing member 13 more accurate with limit structure 114 when the assembly, play direction and limiting displacement to sealing member 13. The first limiting plate 1141 and the first limiting rib 1143 can be integrated, and the second limiting plate 1142 and the second limiting rib 1144 can also be integrated, so that the structure is compact and the processing is convenient.

In other embodiments not shown in the drawings, the sealing member 13 has a first limiting protrusion and a second limiting protrusion arranged at intervals, the overflowing hole 131 is located between the first limiting protrusion and the second limiting protrusion, and the limiting structure includes: a first limit plate 1141 disposed on an inner wall of the valve chamber 112; a second retainer plate 1142 disposed on the inner wall of the valve chamber 112, the sealing member 13 being located between the first retainer plate 1141 and the second retainer plate 1142; the first limiting concave part is arranged on the first limiting plate 1141, and the first limiting convex part is clamped in the first limiting concave part; and the second limiting concave part is arranged on the second limiting plate 1142, and the second limiting convex part is clamped in the second limiting concave part.

By adopting the above mode, the first limit protruding part and the second limit protruding part arranged on the sealing element 13 are respectively clamped into the first limit recessed part and the second limit recessed part, so that the sealing element 13 and the limit structure 114 are more accurate in assembly, and the guide and limit functions of the sealing element 13 are achieved. Wherein, the sealing element 13 can be an integrated structure, which is convenient for processing and has compact structure.

Specifically, the flow channel is a slot 1211, the number of the valve ports 111 is N, the slot 1211 is a fan-shaped structure, and an angle of the slot 1211 is θ, where θ is (1.3-1.8) × 360/N. The slot 1211 is disposed in a fan-shaped structure for communicating two adjacent valve ports 111. The angle of the slot 1211 is limited within the above angle range, which not only ensures the communication between two adjacent valve ports 111, but also seals the other valve ports 111.

Specifically, the valve seat 11 is an integral structure, the valve seat 11 includes a seat body 113 and a plurality of connecting pipes 115, the seat body 113 has a valve cavity 112 and a valve port 111, and the plurality of connecting pipes 115 and the plurality of valve ports 111 are communicated in a one-to-one correspondence. A plurality of connection pipes 115 are provided to be connected to the plurality of valve ports 111, respectively, for fluid communication with the outside. In this embodiment, there are 4 valve ports 111. Through the rotation of the valve core 12, any two adjacent valve ports 111 in the 4 valve ports 111 can be selected to be communicated.

Further, the rotary valve further comprises: the driving part 20, the driving part 20 includes a housing 21 and a transmission structure 22 disposed in the housing 21, the transmission structure 22 is in driving connection with the valve core 12 to drive the valve core 12 to rotate; the valve cover 30 is an integrated structure, one side of the valve cover 30 is connected with the valve seat 11, and the other side of the valve cover 30 is connected with the shell 21.

The transmission structure 22 is arranged in the shell 21, so that the transmission structure 22 is not interfered by the outside, and the transmission is more stable and reliable. In this embodiment, the transmission structure 22 can adopt a gear set, and the transmission is more stable and reliable by adopting the gear set. The valve seat 11 is connected with the shell 21 through the valve cover 30 of the integrated structure, so that the whole assembly of the rotary valve is realized, the structures such as a bracket are not needed, the number of parts is reduced, and the whole structure of the valve is simple.

The driving part 20 further includes a control board and a motor, the motor is controlled to rotate by the control board, and the motor drives the transmission structure 22 to rotate, so that the control is convenient and the operation is simple.

Wherein, the valve core 12 further comprises a connecting shaft 122, and the connecting shaft 122 is provided with a plurality of external teeth; the transmission structure 22 comprises an output shaft 221, the output shaft 221 is provided with a matching hole 2211, and the inner wall of the matching hole 2211 is provided with a plurality of inner teeth; wherein the plurality of outer teeth extend into the mating hole 2211 and mesh with the plurality of inner teeth. The connecting shaft 122 is connected with the output shaft 221 in a manner that a plurality of external teeth and a plurality of internal teeth are meshed, so that the connection is more stable and reliable.

Specifically, the valve cover 30 includes: a main body 31, the main body 31 having a plurality of connection holes, the plurality of connection holes being provided around the valve core 12, each of the connection holes being connected with the valve seat 11; and a plurality of connection columns 32 disposed on the body 31, the plurality of connection columns 32 being disposed around the spool 12, each connection column 32 being connected to the housing 21. Through set up a plurality of connecting holes on main part 31 and be connected with valve seat 11, set up a plurality of spliced poles 32 and be connected with shell 21, simplify whole valve structure, make whole valve structure compacter, firm reliable.

As shown in fig. 4, the valve seat 11 has a sealing groove 116, the sealing groove 116 is disposed around the valve core 12, the rotary valve further includes a sealing ring 43, and the sealing ring 43 is disposed in the sealing groove 116; main body 31 includes plate 311 and pressing ring 316 provided on plate 311, plate 311 abuts valve seat 11, and pressing ring 316 is located in seal groove 116 and presses seal ring 43. The valve seat 11 is provided with a sealing groove 116, and the pressing ring 316 on the plate body 311 presses the sealing ring 43, so that the sealing ring 43 is tightly attached to the inner wall of the sealing groove 116, thereby improving the sealing effect of the valve.

Further, the valve core 12 further comprises a stopper, the stopper is located on the end surface of the core body 121, the lower end of the main body 31 of the valve cover 30 is provided with a limiting block, and the stopper is in limiting fit with the limiting block. When the valve core 12 rotates to a certain angle, the stop block is abutted with the limit block, so that the rotation range of the valve core 12 is limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rotary valve comprising a valve structure (10), the valve structure (10) comprising:

a valve seat (11), the valve seat (11) having a valve chamber (112) and at least three valve ports (111);

the sealing element (13) is arranged in the valve cavity (112), the sealing element (13) is provided with an overflowing hole (131), the sealing element (13) is abutted against the inner wall of the valve cavity (112), the sealing element (13) is provided with a plurality of sealing elements, and the overflowing hole (131) of each sealing element (13) is communicated with one valve port (111);

the valve core (12), the valve core (12) includes a core body (121) rotatably arranged in the valve cavity (112), the core body (121) is a cylindrical structure, the core body (121) has at least one flow passage, and the outer peripheral surface of the core body (121) is provided with a sealing surface (1212); wherein, in the case that the flow channel corresponds to the flow holes (131) of two of the sealing elements (13), the flow channel connects the two flow holes (131), and the sealing surface (1212) abuts against the remaining sealing elements (13) of the valve structure (10) to block the flow holes (131) corresponding to the sealing surface (1212);

wherein, the side of the sealing element (13) facing the valve core (12) is provided with an arc surface for sealing, and the shape of the arc surface is matched with that of the sealing surface (1212).

2. The rotary valve according to claim 1, wherein the valve seat (11) comprises a seat body (113) and a plurality of limit structures (114), the seat body (113) has the valve cavity (112) and the valve port (111), the limit structures (114) are disposed on the inner wall of the valve cavity (112), and the limit structures (114) and the sealing elements (13) are in limit fit with one-to-one correspondence.

3. The rotary valve of claim 2, wherein the sealing member (13) has a first retaining groove (132) and a second retaining groove (133) spaced apart from each other, the overflow hole (131) being located between the first retaining groove (132) and the second retaining groove (133), the retaining structure (114) comprising:

the first limit plate (1141) is arranged on the inner wall of the valve cavity (112);

a second retainer plate (1142) disposed on an inner wall of the valve chamber (112), the seal (13) being located between the first retainer plate (1141) and the second retainer plate (1142);

the first limiting rib (1143) is arranged on the first limiting plate (1141), and the first limiting rib (1143) is clamped in the first limiting groove (132);

and the second limiting rib (1144) is arranged on the second limiting plate (1142), and the second limiting rib (1144) is clamped in the second limiting groove (133).

4. The rotary valve of claim 2, wherein the sealing member (13) has first and second spaced apart retaining projections, the overflow aperture (131) being located between the first and second retaining projections, the retaining structure comprising:

the first limit plate (1141) is arranged on the inner wall of the valve cavity (112);

a second retainer plate (1142) disposed on an inner wall of the valve chamber (112), the seal (13) being located between the first retainer plate (1141) and the second retainer plate (1142);

the first limiting concave part is arranged on the first limiting plate (1141), and the first limiting convex part is clamped in the first limiting concave part;

and the second limiting concave part is arranged on the second limiting plate (1142), and the second limiting convex part is clamped in the second limiting concave part.

5. The rotary valve according to claim 1, wherein the flow channel is a slot (1211), the number of the valve ports (111) is N, the slot (1211) has a fan-shaped structure, and an angle of the slot (1211) is θ, where θ is (1.3-1.8) × 360/N.

6. The rotary valve according to claim 1, wherein the valve seat (11) is a unitary structure, the valve seat (11) comprises a seat body (113) and a plurality of connecting pipes (115), the seat body (113) has the valve cavity (112) and the valve ports (111), and the plurality of connecting pipes (115) and the plurality of valve ports (111) are in one-to-one communication.

7. The rotary valve of claim 1, further comprising:

the driving part (20), the driving part (20) comprises a shell (21) and a transmission structure (22) arranged in the shell (21), and the transmission structure (22) is in driving connection with the valve core (12) to drive the valve core (12) to rotate;

the valve cover (30), valve cover (30) structure as an organic whole, one side of valve cover (30) with valve seat (11) are connected, the opposite side of valve cover (30) with shell (21) are connected.

8. The rotary valve of claim 7,

the valve core (12) further comprises a connecting shaft (122), and the connecting shaft (122) is provided with a plurality of external teeth;

the transmission structure (22) comprises an output shaft (221), the output shaft (221) is provided with a matching hole (2211), and the inner wall of the matching hole (2211) is provided with a plurality of inner teeth; wherein the plurality of external teeth extend into the mating hole (2211) and mesh with the plurality of internal teeth.

9. The rotary valve according to claim 7, wherein the valve cap (30) comprises:

a main body (31), the main body (31) having a plurality of connection holes, the plurality of connection holes being provided around the valve element (12), each of the connection holes being connected to the valve seat (11);

a plurality of connection columns (32) disposed on the main body (31), the plurality of connection columns (32) disposed around the valve cartridge (12), each connection column (32) connected with the housing (21).

10. The rotary valve of claim 9, wherein the valve seat (11) has a seal groove (116), the seal groove (116) disposed around the spool (12), the rotary valve further comprising a seal ring (43), the seal ring (43) disposed within the seal groove (116); main part (31) are including plate body (311) and setting up clamping ring (316) on plate body (311), plate body (311) with valve seat (11) butt, clamping ring (316) are located in seal groove (116) and push down sealing washer (43).

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