Pressing valve

Abstract

The utility model discloses a pressing valve, which belongs to the technical field of pressing valves, and is characterized in that after a valve core is pushed by the elastic force of an elastic piece to reset upwards, a first sealing ring on an outer convex part at the bottom of the valve core seals the bottom end surface of an inlet, so that the inlet is closed; after the valve element is pressed downwards, the valve element resists the elastic force of the elastic piece to move downwards, the first sealing ring on the outer protruding part at the bottom of the valve element is separated from the bottom end face of the inlet, then the inlet is opened, and fluid can flow through the valve cavity from the inlet to the outlet. In the process that the valve element moves up and down, relative friction does not exist between the first sealing ring and the valve body, the leakage problem caused by abrasion of the first sealing ring can be avoided, and the service life of the pressing valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of push-button valve technology, and in particular to a push-button valve. Background Technology

[0002] A push-button valve opens the flow channel by pressing down on the valve core, and closes it by releasing the pressure. Currently, the valve core is located in the valve cavity of the valve body, and a sealing ring is installed on the outer wall of the valve core. When the valve core is pressed down, the sealing ring disengages from the bottom of the valve cavity to open the flow channel. The spring then pushes the valve core back to its original position, causing the sealing ring to close the gap between the valve core and the valve cavity. However, in existing push-button valves, there is friction between the sealing ring and the valve cavity during the pressing and resetting process, which can easily cause wear on the sealing ring and lead to leakage problems. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a push-button valve in which, during the up-and-down movement of the valve core, there is no relative friction between the first sealing ring and the valve body, thus avoiding leakage caused by wear of the first sealing ring and improving the service life of the push-button valve.

[0004] The push valve according to an embodiment of the present utility model includes:

[0005] The valve body has a valve cavity, the top of the valve cavity has a through hole, the bottom of the valve cavity has an inlet, and the side wall of the valve cavity has an outlet;

[0006] The valve core is slidably disposed in the valve cavity, with the top of the valve core extending above the through hole and the bottom of the valve core having an outwardly protruding part located below the inlet;

[0007] The first sealing ring is located at the top of the protruding portion;

[0008] An elastic element connects the valve core and the valve body, and the elastic force of the elastic element causes the valve core to tend to move upward.

[0009] When the valve core moves upward, the outward protrusion causes the first sealing ring to seal the bottom end face of the inlet.

[0010] The push valve according to the present invention has at least the following beneficial effects: after the valve core is pushed upward and reset by the elastic force of the elastic element, the first sealing ring on the outer protrusion at the bottom of the valve core seals the bottom end face of the inlet, thus closing the inlet; after the valve core is pressed downward, the valve core moves downward against the elastic force of the elastic element, causing the first sealing ring on the outer protrusion at the bottom of the valve core to disengage from the bottom end face of the inlet, thereby opening the inlet, so that fluid can flow from the inlet through the valve cavity to the outlet; during the up and down movement of the valve core, there is no relative friction between the first sealing ring and the valve body, which can avoid leakage problems caused by wear of the first sealing ring and improve the service life of the push valve.

[0011] According to some embodiments of the present invention, the bottom surface of the inlet is provided with a downwardly protruding annular protrusion, the annular protrusion surrounds the inlet circumferentially, and the top surface of the first sealing ring abuts against the bottom surface of the annular protrusion.

[0012] According to some embodiments of the present invention, the bottom surface area of ​​the annular protrusion is smaller than the top surface area of ​​the first sealing ring.

[0013] According to some embodiments of the present invention, the cross-sectional area of ​​the annular protrusion gradually decreases from top to bottom.

[0014] According to some embodiments of the present invention, the push valve further includes:

[0015] The second sealing ring is disposed on the outer side wall of the valve core. When the first sealing ring closes the bottom end face of the inlet, the second sealing ring closes the gap between the outer side wall of the valve core and the inner side wall of the valve cavity.

[0016] According to some embodiments of this utility model, the bottom of the inlet is provided with a tapered hole that is larger at the top and smaller at the bottom.

[0017] According to some embodiments of the present invention, the push valve further includes:

[0018] A pressure ring is connected to the valve body, and the pressure ring is located above the through hole;

[0019] The third sealing ring is located on the outer wall of the valve core, and the pressure ring presses the third sealing ring to seal the top surface of the through hole.

[0020] According to some embodiments of the present invention, the top of the valve body is provided with a mounting cavity, the mounting cavity is located above the through hole, and the pressure ring and the elastic element are disposed in the mounting cavity.

[0021] According to some embodiments of this utility model, the pressure ring is detachably connected to the mounting cavity, and the pressing valve further includes:

[0022] A pressure cap is detachably connected to the valve core, and the bottom of the pressure cap abuts against the elastic element.

[0023] According to some embodiments of the present invention, the top of the protruding part is provided with an annular groove, the annular groove surrounds the valve core circumferentially, and the first sealing ring is disposed in the annular groove. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of the push valve according to the first embodiment of this utility model;

[0025] Figure 2 This is a cross-sectional schematic diagram of the push valve according to the second embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of the push valve according to the third embodiment of this utility model.

[0027] Reference numerals: valve body 100, valve cavity 110, through hole 120, inlet 130, tapered hole 131, outlet 140, annular protrusion 150, mounting cavity 160, valve core 200, external protrusion 210, annular groove 211, first sealing ring 300, elastic element 400, second sealing ring 500, pressure ring 600, third sealing ring 700, pressure cap 800. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0031] In the description of this utility model, it should be noted that terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0033] Reference Figures 1 to 3 As shown, this embodiment of the present invention provides a push-button valve.

[0034] The press valve includes a valve body 100, a valve core 200, a first sealing ring 300, and an elastic element 400.

[0035] The valve body 100 has a valve cavity 110 extending in the vertical direction in the middle. The bottom end of the valve cavity 110 has an inlet 130 that connects to the outside. The top end of the valve cavity 110 has a through hole 120. The side wall of the valve cavity 110 has an outlet 140 that connects to the outside.

[0036] The valve core 200 is slidably disposed in the valve cavity 110. The valve core 200 slides in the up and down direction. The top end of the valve core 200 extends above the through hole 120, so that the user can press the top end of the valve core 200 to push the valve core 200 downward in the valve cavity 110. The bottom end of the valve core 200 extends below the inlet 130. The bottom end of the valve core 200 is provided with an outward protrusion 210, which extends outward along the radial direction of the valve core 200. The outward protrusion 210 is slidably disposed below the inlet 130.

[0037] The first sealing ring 300 is installed on the top of the protrusion 210. The elastic element 400 connects the valve body 100 and the valve core 200. The elastic force of the elastic element 400 pushes the valve core 200 to move upward.

[0038] When the pressing force is removed from the top of the valve core 200, the elastic force of the elastic element 400 pushes the valve core 200 to move upward, causing the valve core 200 to move the outer protrusion 210 upward, thereby causing the first sealing ring 300 to move upward with the outer protrusion 210 and abut against the bottom surface of the inlet 130, and the first sealing ring 300 seals the bottom surface of the inlet 130.

[0039] After the valve core 200 is pushed upward and reset by the elastic force of the elastic element 400, the first sealing ring 300 on the outer protrusion 210 at the bottom of the valve core 200 seals the bottom end face of the inlet 130, thus closing the inlet 130. After the valve core 200 is pressed downward, the valve core 200 moves downward against the elastic force of the elastic element 400, causing the first sealing ring 300 on the outer protrusion 210 at the bottom of the valve core 200 to disengage from the bottom end face of the inlet 130, thereby opening the inlet 130. The fluid can then flow from the inlet 130 through the valve cavity 110 to the outlet 140. During the up-and-down movement of the valve core 200, there is no relative friction between the first sealing ring 300 and the valve body 100, which can avoid leakage caused by wear of the first sealing ring 300 and improve the service life of the press valve.

[0040] In some embodiments, refer to Figures 1 to 3 As shown, an annular protrusion 150 is provided on the bottom surface of the inlet 130. The annular protrusion 150 surrounds the outer periphery of the inlet 130 and protrudes downward. When the elastic force of the elastic element 400 pushes the valve core 200 to move upward, the bottom surface of the annular protrusion 150 abuts against the top surface of the first sealing ring 300.

[0041] The bottom surface of the inlet 130 is provided with a downwardly protruding annular protrusion 150 that abuts against the first sealing ring 300. The contact area between the annular protrusion 150 and the first sealing ring 300 is small, which helps the annular protrusion 150 to squeeze the first sealing ring 300 and deform it. This causes the contact surface between the first sealing ring 300 and the annular protrusion 150 to form a tortuous concave surface, which helps to improve the sealing effect of the first sealing ring 300.

[0042] In some embodiments, refer to Figures 1 to 3 As shown, the top surface area of ​​the first sealing ring 300 is larger than the bottom surface area of ​​the annular protrusion 150.

[0043] Further reducing the contact area between the annular protrusion 150 and the first sealing ring 300, while the elastic element 400 provides limited elastic force, increases the pressure of the annular protrusion 150 on the first sealing ring 300 by reducing the contact area. This helps to increase the deformation degree of the first sealing ring 300 and improve its sealing effect.

[0044] In some embodiments, refer to Figures 1 to 3 As shown, the cross-sectional area of ​​the annular protrusion 150 gradually decreases from top to bottom along the horizontal direction.

[0045] The annular protrusion 150 has a conical cylindrical structure. When the elastic element 400 provides elastic force, after the first sealing ring 300 is deformed by the annular protrusion 150, the first sealing ring 300 is squeezed to both sides of the annular protrusion 150, thereby making the first sealing ring 300 wrap around the annular protrusion 150 and improving the sealing effect of the first sealing ring 300.

[0046] In some embodiments, refer to Figures 1 to 3 As shown, the push valve is also provided with a second sealing ring 500. The second sealing ring is provided on the outer wall of the valve core 200. When the elastic element 400 pushes the valve core 200 to move upward and return to its original position, the first sealing ring 300 seals the bottom end face of the inlet 130, and the gap between the inner wall of the valve cavity 110 and the outer wall of the valve core 200 is sealed by the second sealing ring 500.

[0047] During the upward reset of the valve core 200, the second sealing ring 500 enters the valve cavity 110 and first seals the gap between the inner wall of the valve cavity 110 and the outer wall of the valve core 200. After the valve core 200 is reset to the position, the first sealing ring 300 seals the bottom face of the inlet 130. Therefore, even if the first sealing ring 300 is not yet closed, the valve cavity 110 can be pre-closed by the second sealing ring 500, which improves the response speed of the push valve closing. Even if the second sealing ring 500 is worn, it can still provide the effect of blocking more fluid, while the closure of the inlet 130 is achieved by the first sealing ring 300.

[0048] In some embodiments, refer to Figures 1 to 3 As shown, a tapered hole 131 is provided at the bottom of the inlet 130, and the diameter of the tapered hole 131 gradually increases from top to bottom.

[0049] As the second sealing ring 500 gradually enters the valve cavity 110 from the tapered hole 131, the tapered hole 131 helps to gradually compress the second sealing ring 500, preventing the bottom edge of the inlet 130 from scratching the second sealing ring 500, and also helps to reduce the wear of the second sealing ring 500.

[0050] In some embodiments, refer to Figures 1 to 3 As shown, the push valve is also provided with a pressure ring 600 and a third sealing ring 700. The pressure ring 600 is connected to the valve body 100 and is installed above the through hole 120. The middle part of the pressure ring 600 is provided with a clearance hole to avoid the top of the valve core 200, so that the top of the valve core 200 can pass through the clearance hole and extend upward, allowing the user to press the top of the valve core 200. The third sealing ring 700 is installed on the outer side wall of the top of the valve core 200. The third sealing ring 700 is pressed downward by the pressure ring 600 and seals the top surface of the through hole 120.

[0051] A pressure ring 600 and a third sealing ring 700 are used to seal the top of the through hole 120 to prevent fluid from leaking upwards from the through hole 120.

[0052] In some embodiments, refer to Figures 1 to 3 As shown, the top of the valve body 100 is provided with a mounting cavity 160, and the bottom of the mounting cavity 160 is connected to the through hole 120. The pressure ring 600 is installed in the mounting cavity 160, and the elastic element 400 is also provided in the mounting cavity 160. The elastic element 400 connects the valve body 100 and the valve core 200, so that the elastic force of the elastic element 400 provides the thrust for the valve core 200 to move upward.

[0053] In some embodiments, the bottom of the elastic element 400 abuts against the pressure ring 600, and the top of the elastic element 400 is connected to the top of the valve core 200.

[0054] Since the top of the through hole 120 is sealed by the third sealing ring 700, and the inlet 130 and outlet 140 are far away from the through hole 120, the mounting cavity 160 can be kept dry, and the elastic element 400 and the pressure ring 600 are installed in the mounting cavity 160 at the top of the valve body 100, reducing the corrosion of the elastic element 400 by the fluid.

[0055] In some embodiments, refer to Figures 1 to 3 As shown, the pressure ring 600 is detachably connected to the inner wall of the mounting cavity 160. The press valve is also provided with a pressure cover 800, which is detachably connected to the top of the valve core 200. The top of the elastic element 400 abuts against the bottom of the pressure cover 800, and the bottom of the elastic element 400 abuts against the pressure ring 600.

[0056] In this embodiment, the inner wall of the mounting cavity 160 is provided with an internal thread, and the outer wall of the pressure ring 600 is provided with an external thread. The external thread and the internal thread cooperate to realize the detachable connection between the pressure ring 600 and the mounting cavity 160.

[0057] In some embodiments, the pressure ring 600 can be pushed downward by the elastic force of the elastic member 400, so that the pressure ring 600 is detachably disposed in the mounting cavity 160, and the pressure ring 600 presses the third sealing ring 700 downward.

[0058] In this embodiment, a screw is provided at the top of the valve core 200 and a screw hole is provided at the bottom of the pressure cover 800. The screw hole and the screw cooperate to realize the detachable connection between the pressure cover 800 and the valve core 200.

[0059] When the elastic element 400 needs to be replaced, remove the gland 800 from the top of the valve core 200, replace the elastic element 400, and then reinstall the gland 800.

[0060] When the third sealing ring 700 needs to be replaced, remove the gland 800 from the top of the valve core 200, then remove the pressure ring 600 from the mounting cavity 160, and after replacing the third sealing ring 700, reinstall the pressure ring 600, elastic element 400 and gland 800.

[0061] When the first sealing ring 300 or the second sealing ring 500 needs to be replaced, remove the gland 800 from the top of the valve core 200, remove the pressure ring 600 and the third sealing ring 700 from the mounting cavity 160, take out the valve core 200 from top to bottom through the inlet 130, and after replacing the first sealing ring 300 or the second sealing ring 500, insert the valve core 200 from bottom to top through the inlet 130, and reinstall the third sealing ring 700, pressure ring 600, elastic element 400 and gland 800.

[0062] In some embodiments, refer to Figures 1 to 3 As shown, the top surface of the protrusion 210 is provided with an annular groove 211, which surrounds the outer periphery of the valve core 200, and the first sealing ring 300 cooperates with the annular groove 211.

[0063] The use of the annular groove 211 to install the first sealing ring 300 helps to position the first sealing ring 300. When the bottom surface of the inlet 130 abuts against the first sealing ring 300, the first sealing ring 300 will be squeezed and deformed. The annular groove 211 helps to ensure that the first sealing ring 300 will not extend outward and form a gap after being squeezed.

[0064] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A push-button valve, characterized in that, include: The valve body has a valve cavity, the top of the valve cavity has a through hole, the bottom of the valve cavity has an inlet, and the side wall of the valve cavity has an outlet; The valve core is slidably disposed in the valve cavity, with the top of the valve core extending above the through hole and the bottom of the valve core having an outwardly protruding part located below the inlet; The first sealing ring is located at the top of the protruding portion; An elastic element connects the valve core and the valve body, and the elastic force of the elastic element causes the valve core to tend to move upward. When the valve core moves upward, the outward protrusion causes the first sealing ring to seal the bottom end face of the inlet.

2. The push-button valve according to claim 1, characterized in that, The bottom surface of the inlet is provided with a downwardly protruding annular protrusion, which surrounds the inlet circumferentially, and the top surface of the first sealing ring abuts against the bottom surface of the annular protrusion.

3. The push-button valve according to claim 2, characterized in that, The bottom area of ​​the annular protrusion is smaller than the top area of ​​the first sealing ring.

4. The push-button valve according to claim 2, characterized in that, The cross-sectional area of ​​the annular protrusion gradually decreases from top to bottom.

5. The push-button valve according to claim 1, characterized in that, The push valve also includes: The second sealing ring is disposed on the outer side wall of the valve core. When the first sealing ring closes the bottom end face of the inlet, the second sealing ring closes the gap between the outer side wall of the valve core and the inner side wall of the valve cavity.

6. The push-button valve according to claim 5, characterized in that, The bottom of the entrance is provided with a tapered hole that is larger at the top and smaller at the bottom.

7. The push-button valve according to claim 1, characterized in that, The push valve also includes: A pressure ring is connected to the valve body, and the pressure ring is located above the through hole; The third sealing ring is located on the outer wall of the valve core, and the pressure ring presses the third sealing ring to seal the top surface of the through hole.

8. The push-button valve according to claim 7, characterized in that, The valve body has a mounting cavity at its top, which is located above the through hole. The pressure ring and the elastic element are disposed in the mounting cavity.

9. The push-button valve according to claim 8, characterized in that, The pressure ring is detachably connected to the mounting cavity, and the press valve further includes: A pressure cap is detachably connected to the valve core, and the bottom of the pressure cap abuts against the elastic element.

10. The push-button valve according to claim 1, characterized in that, The top of the protruding part is provided with an annular groove, which surrounds the valve core circumferentially, and the first sealing ring is disposed in the annular groove.

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