Valve and assembly process for same

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 rotationally connected into the sealing cavity, 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 the driving assembly is arranged in the liquid inlet. The valve element is provided with a liquid passing channel, 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, and the annular sealing piece is arranged in the containing groove, so that friction between the valve element and the valve body can be reduced, and durability is improved; according to the assembling technology of the valve, the inner sealing face of the valve body and the outer sealing face of the valve element are fully coated with the silicone oil, so that the valve element can be conveniently and smoothly installed in the valve body, and meanwhile the valve element can smoothly rotate in the valve body.

Description

Technical Field

[0001] The present invention relates to a valve and also to an assembly process for the valve. Background Art

[0002] Valves are common accessories in the fluid transportation process. 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, affecting normal use.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the Invention

[0004] In view of the technical problem that the gap between the valve core and the valve body will increase after a period of use in the existing valves in the prior art mentioned above, resulting in leakage between the valve core and the valve body; the technical solution adopted by the present invention to solve the technical problem is: a valve, comprising: a valve body, a valve core, and a driving assembly for driving the valve core to rotate relative to the valve body, the valve body is provided with a sealing cavity, one end of the sealing cavity is provided with an opening, a cylindrical inner sealing surface is provided in the sealing cavity, the valve core is rotatably connected to the sealing cavity, the valve core is provided with an outer sealing surface that is sealed and rotatably matched with the inner sealing surface, the outer sealing surface is cylindrical, and the valve body is provided with a A liquid inlet, the valve body is provided with a first liquid outlet communicating with the sealing cavity, the first liquid outlet passes through the inner sealing surface, the valve core is provided with a liquid passage, one end of the liquid passage can be communicated 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 friction coefficient, 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 and slides with the inner sealing surface, the switching hole passes through the contact sealing surface, and the driving assembly drives the valve core to rotate so that the switching hole can be connected or disconnected with the first liquid outlet.

[0005] In the valve as described above, a locking piece is threadedly connected to the valve body for locking the valve core in the sealing cavity, a through hole is provided in the locking piece, and a drive shaft is provided on the valve core that can pass through the through hole and connect to the drive assembly.

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

[0007] In the valve as described above, an annular groove is provided at one end of the valve core close to the opening of the sealing cavity, and an O-ring is provided in the annular groove to seal with the inner sealing surface.

[0008] A valve as described above, the driving assembly includes: a limit member, the limit member is connected to the driving shaft, the limit member is provided with a first limit portion protruding downward, and the valve body is provided with a second limit portion protruding upward to cooperate with the first limit portion to limit the rotation angle of the limit member.

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

[0010] In a valve as described above, the liquid passage comprises: an axial channel and a radial channel that are interconnected, the axial channel is arranged along the axial direction of the valve core, the radial channel is arranged along the axial direction perpendicular to the valve core, the outer port of the axial channel is connected to the liquid inlet, and the accommodating groove is arranged at the outer port of the radial channel.

[0011] In the valve as described above, the valve body is provided with a second liquid outlet communicating with the sealing cavity, and the driving assembly drives the valve core to rotate so that the switching hole can be connected to or disconnected from the second liquid outlet.

[0012] In the valve as described above, the annular sealing member is made of polytetrafluoroethylene.

[0013] An assembly process for a valve of the present invention comprises the following steps: Step 1: Apply silicone oil to the inner sealing surface of the valve body and the outer sealing surface of the valve core; Step 2: Install the first gasket, the second gasket, and the O-ring on the valve core. At the same time, install the annular seal into the receiving groove, and ensure that the contact sealing surface on the annular seal matches the outer sealing surface of the valve core. Step 3: Install the valve core together with the first gasket, the second gasket, the O-ring and the annular seal into the sealing cavity of the valve body, and align the switching hole of the annular seal with the first liquid outlet or the second liquid outlet; Step 4: Press the valve core into the valve body; Step 5: Install the locking piece onto the valve body; Step 6: Install the drive assembly onto the valve core.

[0014] The beneficial effects of the present invention are: 1. The valve body of the present invention is provided with 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 friction coefficient is provided in the receiving groove. The contact sealing surface of the annular seal and the inner sealing surface of the valve core are sealed and slidably matched, 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, preventing the annular seal from being deformed and failing due to pressure, and has the advantage of a long service life.

[0015] 2. The present invention provides an annular groove at one end of the valve core close to the opening of the sealing cavity, and an O-ring is provided in the annular groove to seal with the inner sealing surface; the annular seal constitutes a first seal, and the O-ring can constitute a second seal to achieve double sealing and further avoid the risk of leakage.

[0016] 3. The annular seal is made of polytetrafluoroethylene, which is resistant to high temperatures, has an extremely low friction coefficient, and can act as a lubricant, thereby increasing the service life of the valve.

[0017] 4. The assembly process of the valve of the present invention is as follows: during assembly, silicone oil is applied to the inner sealing surface of the valve body and the outer sealing surface of the valve core, so that the valve core can be smoothly installed into the valve body and the valve core can rotate smoothly in the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is one of the exploded schematic diagrams of the present invention; Figure 3 It is a full cross-sectional schematic diagram of the present invention; Figure 4 It is a three-dimensional cross-sectional schematic diagram of the present invention; Figure 5 This is the second decomposition diagram of the present invention. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 5As shown, a valve of the present invention comprises: a valve body 1, a valve core 2, and a driving assembly 3 for driving the valve core 2 to rotate relative to the valve body 1, wherein the valve body 1 is provided with a sealing cavity 100, one end of the sealing cavity 100 is provided with an opening 108, a cylindrical inner sealing surface 11 is provided in the sealing cavity 100, the valve core 2 is rotatably connected in the sealing cavity 100, the valve core 2 is provided with an outer sealing surface 21 that is sealed and rotatably matched with the inner sealing surface 11, the outer sealing surface 21 is cylindrical, the valve body 1 is provided with a liquid inlet 101 communicating with the sealing cavity 100, the valve body 1 is provided with a first liquid outlet 102 communicating with the sealing cavity 100, and the first liquid outlet 102 passes through the inner sealing surface 1 1. The valve core 2 is provided with a liquid passage 201, one end of which can be communicated with the liquid inlet 101, and the other end of the liquid passage 201 is provided with a receiving groove 202, and the receiving groove 202 is provided with an annular seal 22 made of a material with a low friction coefficient, and the annular seal 22 is provided with a switching hole 2201 communicating with the liquid passage 201, and the annular seal 22 is provided with a contact sealing surface 2202 that is sealed and slidably matched with the inner sealing surface 11, and the switching hole 2201 passes through the contact sealing surface 2202, and the driving component 3 drives the valve core 2 to rotate so that the switching hole 2201 can be connected to or disconnected from the first liquid outlet 102. The valve body of the present invention is provided with 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 friction coefficient is provided in the receiving groove. The contact sealing surface of the annular seal is sealed and slidably matched 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, avoid the annular seal from being deformed and failing due to pressure, and has the advantage of a long service life.

[0021] In this embodiment, a locking member 4 for locking the valve core 2 in the sealing cavity 100 is threadedly connected to the valve body 1, and a through hole 401 is provided in the locking member 4. The valve core 2 is provided with a drive shaft 23 that can pass through the through hole 401 and connect with the drive assembly 3.

[0022] In this embodiment, a first gasket 51 is provided between the end surface 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 increase service life.

[0023] In this embodiment, an annular groove 203 is provided at one end of the valve core 2, near the opening 108 of the sealing chamber 100. An O-ring 53 is positioned within the annular groove 203, sealingly engaging with the inner sealing surface 11. The annular seal 22 provides a primary seal, while the O-ring 53 provides a secondary seal, achieving a double seal and further reducing the risk of leakage.

[0024] In this embodiment, the drive assembly 3 includes a stopper 31 connected to the drive shaft 23. The stopper 31 is provided with a downwardly protruding first stopper 311. The valve body 1 is provided with an upwardly protruding second stopper 12 that cooperates with the first stopper 311 to limit the rotation angle of the stopper 31. The cooperation between the first stopper 311 and the second stopper 12 limits the rotation angle of the drive assembly relative to the valve body, facilitating operation.

[0025] In this embodiment, in order to facilitate manual driving of the valve core to rotate, the limiting member 31 is connected to a handle 32 and a locking screw 33 for locking the handle 32 on the limiting member 31 .

[0026] In this embodiment, the liquid passage 201 comprises an axial passage 2011 and a radial passage 2012 that are interconnected. The axial passage 2011 is arranged along the axis of the valve core, and the radial passage 2012 is arranged perpendicular to the axis of the valve core. The outer end of the axial passage 2011 is connected to the liquid inlet 101, and the receiving groove 202 is arranged at the outer end of the radial passage 2012. This design facilitates processing.

[0027] In this embodiment, the valve body 1 is provided with a second liquid outlet 103 communicating with the sealed cavity 100. The driving assembly 3 drives the valve core 2 to rotate, thereby connecting or disconnecting the switching hole 2201 with the second liquid outlet 103, thereby realizing the function of a three-way switching valve.

[0028] In this embodiment, the annular seal 22 is made of polytetrafluoroethylene, which has the characteristics of high temperature resistance, extremely low friction coefficient, and can function as a lubricant, thereby increasing the service life of the valve.

[0029] In this embodiment, the valve body and the valve core are made of stainless steel, which has the advantage of a long service life.

[0030] An assembly process for a valve of the present invention comprises the following steps: Step 1: Apply silicone oil to the inner sealing surface 11 of the valve body 1 and the outer sealing surface 21 of the valve core 2; Step 2: Install the first gasket 51, the second gasket 52 and the O-ring 53 on the valve core 2, and install the annular seal 22 into the receiving groove 202, ensuring that the contact sealing surface 2202 on the annular seal 22 matches the outer sealing surface 21 of the valve core 2; Step 3: Install the valve core 2 together with the first gasket 51, the second gasket 52, the O-ring 53 and the annular seal 22 into the sealing cavity 100 of the valve body 1, and align the switching hole 2201 of the annular seal 22 with the first liquid outlet 102 or the second liquid outlet 103; Step 4: Press the valve core 2 into the valve body 1; Step 5: Install the locking member 4 onto the valve body 1; Step 6: Install the drive assembly 3 onto the valve core 2.

[0031] During assembly, silicone oil is applied to the inner sealing surface 11 of the valve body 1 and the outer sealing surface 21 of the valve core 2, so that the valve core can be smoothly installed into the valve body and the valve core can rotate smoothly in the valve body.

[0032] The above examples are merely provided to further illustrate the technical content of the present invention for easier understanding by the reader, but do not limit the embodiments of the present invention to these examples. Any extension or re-creation of the technology based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A valve comprising: A valve body (1), a valve core (2), and a driving assembly (3) for driving the valve core (2) to rotate relative to the valve body (1), 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), a cylindrical inner sealing surface (11) is provided in the sealing cavity (100), the valve core (2) is rotatably connected in the sealing cavity (100), the valve core (2) is provided with an outer sealing surface (21) that seals and rotatably cooperates with the inner sealing surface (11), the outer sealing surface (21) is cylindrical, the valve body (1) is provided with a liquid inlet (101) communicating with the sealing cavity (100), the valve body (1) is provided with a first liquid outlet (102) communicating with the sealing cavity (100), the first liquid outlet (102) passes through the inner sealing surface (1 1), the valve core (2) is provided with a liquid passage (201), one end of the liquid passage (201) can be communicated with 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 friction coefficient, 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 is sealed and slidably matched with the inner sealing surface (11), the switching hole (2201) passes through the contact sealing surface (2202), and the driving component (3) drives the valve core (2) to rotate so that the switching hole (2201) can be connected to or disconnected from the first liquid outlet (102).

2. A valve according to claim 1, characterized in that: The valve body (1) is threadedly connected to a locking member (4) for locking the valve core (2) in the sealing cavity (100), the locking member (4) is provided with a through hole (401), and the valve core (2) is provided with a drive shaft (23) capable of passing through the through hole (401) and connecting to the drive assembly (3).

3. A valve according to claim 2, characterized in that: A first gasket (51) is provided between the end surface 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: An annular groove (203) is provided at one end of the valve core (2) close to the opening (108) of the sealing cavity (100), and an O-type sealing 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 driving assembly (3) includes: a limiting member (31), the limiting member (31) is connected to the driving shaft (23), the limiting member (31) is provided with a first limiting portion (311) protruding downward, and the valve body (1) is provided with a second limiting portion (12) protruding upward to cooperate with the first limiting portion (311) to 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) for locking the handle (32) on the limiting member (31).

7. A valve according to claim 1, characterized in that: The liquid passage (201) comprises an axial channel (2011) and a radial channel (2012) that are interconnected. The axial channel (2011) is arranged along the axial direction of the valve core, and the radial channel (2012) is arranged along the axial direction perpendicular to the valve core. The outer port of the axial channel (2011) is connected to the liquid inlet (101), and the accommodating groove (202) is arranged at the outer port of the radial channel (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 to 8, characterized in that: The valve body (1) is provided with a second liquid outlet (103) communicating with the sealing cavity (100), and the driving assembly (3) drives the valve core (2) to rotate so that the switching hole (2201) can be connected to or disconnected from the second liquid outlet (103).

10. A valve assembly process, characterized in that: The steps include: Step 1: Apply silicone oil to the inner sealing surface (11) of the valve body (1) and the outer sealing surface (21) of the valve core (2); Step 2: Install the first gasket (51), the second gasket (52) and the O-ring (53) on the valve core (2), and install the annular seal (22) into the receiving groove (202), and ensure that the contact sealing surface (2202) on the annular seal (22) matches the outer sealing surface (21) of the valve core (2); Step 3: Install the valve core (2) together with the first gasket (51), the second gasket (52), the O-ring (53) and the annular seal (22) into the sealing cavity (100) of the valve body (1), and align the switching hole (2201) of the annular seal (22) with the first liquid outlet (102) or the second liquid outlet (103); Step 4: Press the valve core (2) into the valve body (1); Step 5: Install the locking member (4) onto the valve body (1); Step 6. Install the drive assembly (3) onto the valve core (2).

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