Valve

Abstract

The valve comprises a valve body, a valve element and a driving assembly, a sealing cavity is formed in the valve body, an opening is formed in one end of the sealing cavity, an inner sealing face is arranged in the sealing cavity, the valve element is connected into the sealing cavity in a rotating mode, an outer sealing face is arranged on the valve element, a liquid inlet and a first liquid outlet are formed in the valve body, and a liquid passing channel is formed in the valve element. The liquid passing channel can be communicated with the liquid inlet, the liquid passing channel is provided with a containing groove, an annular sealing piece is arranged in the containing groove, a switching hole is formed in the annular sealing piece, and a contact sealing face is arranged on the annular sealing piece; the containing groove is formed in the other end of the liquid passing channel of the valve element, the annular sealing piece made of the material with the low friction coefficient is arranged in the containing groove, and the contact sealing face of the annular sealing piece and the inner sealing face of the valve element are in sealing and sliding fit, so that friction between the valve element and the valve body can be reduced, and durability is improved; the containing groove can maintain the overall shape of the annular sealing piece, and the annular sealing piece is prevented from deforming and losing efficacy due to pressure.

Description

Technical Field

[0001] This utility model relates to a valve. Background Technology

[0002] Valves are common accessories in fluid transportation. After a period of use, the gap between the valve core and the valve body of existing valves will increase, resulting in leakage between the valve core and the valve body, which will affect normal use.

[0003] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0004] Regarding the aforementioned technical problem in existing valves where the gap between the valve core and valve body increases after a period of use, leading to leakage, the technical solution adopted by this utility model is: a valve, comprising: a valve body, a valve core, and a drive assembly for driving the valve core to rotate relative to the valve body. The valve body has a sealing cavity with an opening at one end. An inner sealing surface is provided within the sealing cavity. The valve core is rotatably connected within the sealing cavity. The valve core has an outer sealing surface that seals with and rotatably engages with the inner sealing surface. The valve body has a liquid inlet communicating with the sealing cavity. The valve body is provided with a first liquid outlet communicating with the sealing cavity. The first liquid outlet penetrates the inner sealing surface. The valve core is provided with a liquid passage. One end of the liquid passage can communicate with the liquid inlet. The other end of the liquid passage is provided with a receiving groove. The receiving groove is provided with an annular seal made of a material with a low coefficient of friction. The annular seal is provided with a switching hole communicating with the liquid passage. The annular seal is provided with a contact sealing surface that seals with and slides with the inner sealing surface. The switching hole penetrates the contact sealing surface. The driving component drives the valve core to rotate, thereby enabling the switching hole to communicate with or disconnect from the first liquid outlet.

[0005] As described above, the valve body is threaded with a locking member for locking the valve core in the sealing cavity. The locking member has a through hole, and the valve core has a drive shaft that can pass through the through hole and connect to the drive assembly.

[0006] In the valve described above, a first gasket is provided between the end face of the valve core and the sealing cavity, and a second gasket is provided between the valve core and the locking member.

[0007] As described above, the valve core has an annular groove at one end near the opening of the sealing cavity, and an O-ring seal that seals with the inner sealing surface is provided in the annular groove.

[0008] As described above, the valve's drive assembly includes: a limiting member connected to a drive shaft; a first limiting portion protruding downwards on the limiting member; and a second limiting portion protruding upwards to cooperate with the first limiting portion and thus limit the rotation angle of the limiting member.

[0009] In the valve described above, the limiting member is connected to a handle and a locking screw that locks the handle onto the limiting member.

[0010] As described above, the liquid passage includes an axial passage and a radial passage that are interconnected. The axial passage is arranged along the axis of the valve core, and the radial passage is arranged perpendicular to the axis of the valve core. The outer port of the axial passage is connected to the liquid inlet, and the receiving groove is arranged at the outer port of the radial passage.

[0011] As described above, the valve body is provided with a second liquid outlet communicating with the sealing cavity, and the drive assembly drives the valve core to rotate, thereby enabling the switching hole to communicate or disconnect with the second liquid outlet.

[0012] In the valve described above, the annular seal is made of polytetrafluoroethylene.

[0013] The beneficial effects of this utility model are:

[0014] 1. The valve body of this utility model has a receiving groove at the other end of the liquid passage of the valve core, and an annular seal made of a material with a low coefficient of friction is provided in the receiving groove. The contact sealing surface of the annular seal seals and slides with the inner sealing surface of the valve core, which can reduce the friction between the valve core and the valve body and improve durability. At the same time, the receiving groove can maintain the overall shape of the annular seal and prevent the annular seal from deforming and failing under pressure, thus having the advantage of long service life.

[0015] 2. This utility model provides an annular groove at one end of the valve core near the opening of the sealing cavity, and an O-ring seal that seals with the inner sealing surface is provided in the annular groove; the annular seal forms the first seal, and the O-ring seal forms the second seal, achieving double sealing and further avoiding the risk of leakage.

[0016] 3. The annular seal is made of polytetrafluoroethylene, which has the functions of high temperature resistance, extremely low coefficient of friction, and lubrication, thus improving the service life of the valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is one of the exploded view diagrams of this utility model;

[0019] Figure 3 This is a full sectional view of the present invention;

[0020] Figure 4 This is a three-dimensional sectional view of the present invention;

[0021] Figure 5 This is the second exploded view of the present invention. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, this utility model discloses a valve, comprising: a valve body 1, a valve core 2, and a drive assembly 3 for driving the valve core 2 to rotate relative to the valve body 1. The valve body 1 has a sealing cavity 100, one end of which has an opening 108. An inner sealing surface 11 is provided inside the sealing cavity 100. The valve core 2 is rotatably connected inside the sealing cavity 100. The valve core 2 has an outer sealing surface 21 that seals with and rotatably engages with the inner sealing surface 11. The valve body 1 has an inlet 101 communicating with the sealing cavity 100 and a first outlet 102 communicating with the sealing cavity 100. The first outlet 102 penetrates the inner sealing surface 11. The valve core 2 has... A liquid passage 201 is provided, one end of which can communicate with the liquid inlet 101, and the other end of the liquid passage 201 is provided with a receiving groove 202. The receiving groove 202 is provided with an annular seal 22 made of a material with a low coefficient of friction. The annular seal 22 is provided with a switching hole 2201 communicating with the liquid passage 201. The annular seal 22 is provided with a contact sealing surface 2202 that seals and slides with the inner sealing surface 11. The switching hole 2201 penetrates the contact sealing surface 2202. The driving component 3 drives the valve core 2 to rotate, thereby enabling the switching hole 2201 to communicate with or disconnect from the first liquid outlet 102. The valve body of this invention has a receiving groove at the other end of the liquid passage of the valve core, and an annular seal made of a material with a low coefficient of friction is provided in the receiving groove. The contact sealing surface of the annular seal seals and slides with the inner sealing surface of the valve core, which can reduce the friction between the valve core and the valve body and improve durability. At the same time, the receiving groove can maintain the overall shape of the annular seal and prevent the annular seal from deforming and failing under pressure, thus having the advantage of long service life.

[0024] In this embodiment, a locking member 4 for locking the valve core 2 in the sealing cavity 100 is threaded onto the valve body 1. The locking member 4 is provided with a through hole 401. The valve core 2 is provided with a drive shaft 23 that can pass through the through hole 401 and connect to the drive assembly 3.

[0025] In this embodiment, a first gasket 51 is provided between the end face of the valve core 2 and the sealing cavity 100, and a second gasket 52 is provided between the valve core 2 and the locking member 4. The first gasket 51 and the second gasket 52 are made of polytetrafluoroethylene, which can reduce friction during rotation and improve service life.

[0026] In this embodiment, an annular groove 203 is provided at one end of the valve core 2 near the opening 108 of the sealing cavity 100. An O-ring 53 is provided in the annular groove 203 to seal against the inner sealing surface 11. The annular seal 22 forms a first seal, and the O-ring 53 forms a second seal, achieving a double seal and further avoiding the risk of leakage.

[0027] In this embodiment, the drive assembly 3 includes a limiting member 31 connected to the drive shaft 23. The limiting member 31 has a downwardly protruding first limiting portion 311, and the valve body 1 has an upwardly protruding second limiting portion 12 that cooperates with the first limiting portion 311 to limit the rotation angle of the limiting member 31. The cooperation of the first limiting portion 311 and the second limiting portion 12 limits the rotation angle of the drive assembly relative to the valve body, facilitating use.

[0028] In this embodiment, in order to facilitate manual rotation of the valve core, a handle 32 and a locking screw 33 for locking the handle 32 onto the limit member 31 are connected to the limit member 31.

[0029] In this embodiment, the liquid passage 201 includes an axial passage 2011 and a radial passage 2012 that are interconnected. The axial passage 2011 is arranged along the axial direction of the valve core, and the radial passage 2012 is arranged along the axial direction perpendicular to the valve core. The outer port of the axial passage 2011 is connected to the liquid inlet 101, and the receiving groove 202 is disposed at the outer port of the radial passage 2012. This design facilitates manufacturing.

[0030] In this embodiment, the valve body 1 is provided with a second liquid outlet 103 communicating with the sealing cavity 100. The driving component 3 drives the valve core 2 to rotate, thereby enabling the switching hole 2201 to communicate or disconnect with the second liquid outlet 103. This achieves the function of a three-way switching valve.

[0031] In this embodiment, the annular seal 22 is made of polytetrafluoroethylene, which has the functions of high temperature resistance, extremely low coefficient of friction, and lubrication, thereby improving the service life of the valve.

[0032] In this embodiment, the valve body and valve core are made of stainless steel, which has the advantage of long service life.

[0033] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A valve, comprising: The valve body (1), valve core (2), and drive assembly (3) for driving the valve core (2) to rotate relative to the valve body (1) are characterized in that the valve body (1) is provided with a sealing cavity (100), one end of the sealing cavity (100) is provided with an opening (108), the sealing cavity (100) is provided with an inner sealing surface (11), the valve core (2) is rotatably connected to the sealing cavity (100), the valve core (2) is provided with an outer sealing surface (21) that seals with and rotatably engages with the inner sealing surface (11), the valve body (1) is provided with an inlet (101) communicating with the sealing cavity (100), the valve body (1) is provided with a first outlet (102) communicating with the sealing cavity (100), the first outlet (102) penetrates the inner sealing surface (11), and the valve core (2) The valve core (2) is provided with a liquid passage (201). One end of the liquid passage (201) can be connected to the liquid inlet (101). The other end of the liquid passage (201) is provided with a receiving groove (202). The receiving groove (202) is provided with an annular seal (22) made of a material with a low coefficient of friction. The annular seal (22) is provided with a switching hole (2201) that communicates with the liquid passage (201). The annular seal (22) is provided with a contact sealing surface (2202) that seals and slides with the inner sealing surface (11). The switching hole (2201) penetrates the contact sealing surface (2202). The driving component (3) drives the valve core (2) to rotate, thereby enabling the switching hole (2201) to communicate with or disconnect from the first liquid outlet (102).

2. The valve according to claim 1, characterized in that, The valve body (1) is threaded with a locking member (4) for locking the valve core (2) in the sealing cavity (100). The locking member (4) has a through hole (401). The valve core (2) has a drive shaft (23) that can pass through the through hole (401) and connect to the drive assembly (3).

3. A valve according to claim 2, characterized in that, A first gasket (51) is provided between the end face of the valve core (2) and the sealing cavity (100), and a second gasket (52) is provided between the valve core (2) and the locking member (4).

4. A valve according to claim 2, characterized in that, The valve core (2) has an annular groove (203) at one end of the opening (108) near the sealing cavity (100), and an O-ring (53) is provided in the annular groove (203) to seal with the inner sealing surface (11).

5. A valve according to claim 1, characterized in that, The drive assembly (3) includes: a limiting member (31), the limiting member (31) is connected to the drive shaft (23), the limiting member (31) is provided with a first limiting part (311) protruding downward, and the valve body (1) is provided with a second limiting part (12) protruding upward to cooperate with the first limiting part (311) and thus limit the rotation angle of the limiting member (31).

6. A valve according to claim 5, characterized in that, The limiting member (31) is connected to a handle (32) and a locking screw (33) that locks the handle (32) onto the limiting member (31).

7. A valve according to claim 1, characterized in that, The liquid passage (201) includes an axial passage (2011) and a radial passage (2012) that are interconnected. The axial passage (2011) is arranged along the axial direction of the valve core, and the radial passage (2012) is arranged along the axial direction perpendicular to the valve core. The outer port of the axial passage (2011) is connected to the liquid inlet (101), and the receiving groove (202) is arranged at the outer port of the radial passage (2012).

8. A valve according to claim 1, characterized in that, The annular seal (22) is made of polytetrafluoroethylene.

9. A valve according to any one of claims 1-8, characterized in that, The valve body (1) is provided with a second liquid outlet (103) that communicates with the sealing cavity (100). The drive assembly (3) drives the valve core (2) to rotate, thereby enabling the switching hole (2201) to communicate or disconnect with the second liquid outlet (103).

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