Pressing type valve element

Abstract

The utility model discloses a push type valve core, which belongs to the technical field of valve cores, and comprises a shell, a base, a linkage rod and a movable sealing element, the base is detachably connected with the lower end part of the shell, a water inlet and a water outlet are arranged on the base, the linkage rod is arranged in the shell in a penetrating manner, and the linkage rod is controlled to move up and down through a button assembly; the movable sealing piece is arranged in the base in an up-down sliding mode and used for opening and closing the water outlet, a pressure relief hole is formed in the movable sealing piece along the central axis of the linkage rod, a retaining seat and a sealing gasket are arranged between the shell and the base and attached to each other, a pressure maintaining cavity is formed between the sealing gasket and the movable sealing piece, and the pressure relief hole is communicated with the pressure maintaining cavity; a water passing groove communicated with the pressure maintaining cavity and the water inlet is formed in the movable sealing piece. The liquid stored in the pressure maintaining cavity can reduce the influence of the water hammer on the movable sealing piece, and a user can open and close the valve element without pressing the button assembly vigorously.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of valve core, and particularly relates to a press type valve core. BACKGROUND

[0002] At present, the existing valve core can be generally divided into rotary valve core and press type valve core according to the operation mode, wherein the press type valve core key valve core structure is simple, the key stroke is short, the pressing force is smaller compared with other valve cores, and the performance is more reliable, and simultaneously, since the middle water inlet mode is adopted, waterway bending is reduced, pressure loss is smaller, and flow is larger.

[0003] A humanized faucet valve core is disclosed in Chinese patent with publication number CN110030427B, which comprises a valve body, a center plug, a knob and a water outlet control mechanism. The valve body is provided with a mounting port at the top, a water inlet on the side wall and a water outlet at the bottom. The center plug is rotatable and movable up and down in the valve body at the first position and the second position. The upper part and the lower part of the center plug are respectively provided with an upper plug and a lower plug. The upper plug is in movable sealing cooperation with the mounting port to prevent water leakage from the mounting port. The lower plug is in selective sealing cooperation with the water outlet to open and close the water outlet. The center plug is provided with a flow regulating block which moves to block the water inlet. When the center plug is at the first position, the lower plug is in sealing cooperation with the water outlet to close the water outlet. When the center plug is at the second position, the lower plug is separated from the sealing cooperation with the water outlet to open the water outlet. The knob is rotatably installed on the top of the valve body and connected with the center plug to rotate synchronously, so that the knob can drive the center plug to rotate to control the overlapping area of the flow regulating block and the water inlet, thereby controlling the water passing area of the water inlet to realize flow regulation. The water outlet control mechanism is installed on the valve body and used to drive the center plug to switch between the first position and the second position, thereby controlling the opening and closing of the water outlet to control the water outlet of the valve core. The water outlet control mechanism is a step press mechanism installed on the top of the valve body and connected with the center plug. The step press mechanism is pressed to drive the center plug to switch between the first position and the second position.

[0004] The above technical scheme has at least the following defects: the valve core has poor pressure maintaining effect after being closed, the valve core is greatly affected by water pressure, and it is difficult to maintain pressure at low pressure. When the water pressure is too large, the user needs to exert more force to control the opening and closing. In addition, during the opening process of the valve core, the center plug is greatly affected by water hammer. After long-term use of the valve core, the sealing performance is reduced. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a press type valve core. The technical problem to be solved by the utility model is how to reduce the influence of water hammer on the valve core.

[0006] The utility model is achieved as follows:

[0007] A push type valve core comprises a housing, a base, a linkage rod and a movable sealing member, the base is detachably connected with the lower end of the housing, the base is provided with a water inlet and a water outlet, the linkage rod is arranged in the housing and is controlled to move up and down by a button assembly, the movable sealing member is slidably arranged in the base and is used to open and close the water outlet, the movable sealing member is provided with a pressure relief hole along the central axis of the linkage rod, a retaining seat and a sealing gasket are arranged between the housing and the base, the retaining seat and the sealing gasket are in close contact with each other, a pressure maintaining cavity is arranged between the sealing gasket and the movable sealing member, the pressure relief hole is communicated with the pressure maintaining cavity, a spring is arranged between the retaining seat and the button assembly, one end of the linkage rod penetrating through the retaining seat and the sealing gasket is provided with a soft sealing member, the soft sealing member is used to open and close the pressure relief hole, and the movable sealing member is provided with a water passing groove communicated with the pressure maintaining cavity and the water inlet.

[0008] In the push type valve core, the movable sealing member comprises a piston, an O-shaped ring and an angle sealing ring, the upper end of the piston is provided with a containing ring groove one containing the O-shaped ring, the lower end of the piston is provided with a containing ring groove two containing the angle sealing ring, the water passing groove is located on the upper side groove wall of the containing ring groove one, the containing ring groove one and the O-shaped ring are in clearance fit, the outer side surface of the O-shaped ring is in contact with the inner wall of the piston, and the angle sealing ring is used in cooperation with the water outlet.

[0009] In the push type valve core, the upper end of the movable sealing member is provided with a containing groove for the soft sealing member to extend into, and the pressure relief hole is located in the containing groove.

[0010] In the push type valve core, the containing groove is protruded and formed into a sealing convex ring, and the sealing convex ring is arranged around the circumferential side of the pressure relief hole.

[0011] In the push type valve core, the retaining seat is provided with a through hole one for the linkage rod to pass through, and the sealing gasket is provided with a through hole two for the linkage rod to pass through.

[0012] In the push type valve core, the through hole one and the linkage rod are in clearance fit, the through hole two and the linkage rod are in interference fit, and the through hole two is a tapered hole structure.

[0013] In the push type valve core, the inner side of the lower end of the housing is provided with a clamping ring groove, and the outer side of the upper end of the base is provided with a clamping convex ring used in cooperation with the clamping ring groove.

[0014] In the push type valve core, the housing is provided with a deformation groove communicated with the clamping ring groove.

[0015] In the push type valve core, the upper end surface of the base is provided with a convex rib used to abut against the lower end surface of the sealing gasket.

[0016] In the above-mentioned press type valve core, the sealing gasket and the soft sealing member are both made of silica gel or rubber material.

[0017] The utility model discloses compared with prior art prominent and beneficial technical effect is:

[0018] The utility model discloses a pass water groove is connected with the pressure maintaining chamber and water inlet, and the pressure maintaining chamber can keep communicating with the water inlet when the valve core is closed, so that the pressure maintaining chamber can store liquid, and the part of liquid can be used as the buffer when the movable sealing member moves up, so that the movable sealing member will not move violently under the action of high water pressure, and the influence of water hammer effect in the pipeline on the movable sealing member is reduced, and the button assembly only needs to be pressed when opening and closing the valve core, and the soft sealing member on the linkage rod can seal or open the pressure relief hole on the movable sealing member, so that the user can complete opening or closing without pressing the button assembly hard. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic drawing of the utility model;

[0020] Figure 2 It is the sectional view of the utility model;

[0021] Figure 3 It is the explosion drawing of the utility model;

[0022] Figure 4 It is the structure schematic drawing of the shell of the utility model;

[0023] Figure 5 It is the structure schematic drawing of the piston of the utility model one;

[0024] Figure 6 It is the structure schematic drawing of the piston of the utility model two;

[0025] Figure 7 It is the structure schematic drawing of the shell and base of the utility model.

[0026] The meaning of the label in the drawing is:

[0027] 1, shell, 10, clamping ring groove, 11, retaining seat, 12, sealing gasket, 13, spring, 101, deformation groove, 111, through hole one, 112, through hole two;

[0028] 2, base, 20, clamping convex ring, 21, water inlet, 22, water outlet, 201, convex rib;

[0029] 3, linkage rod, 31, soft sealing member;

[0030] 4. Movable seal; 40. Pressure relief hole; 41. Piston; 42. O-ring; 43. Angled seal; 44. Receiving ring groove one; 45. Receiving ring groove two; 46. Upper groove wall; 47. Receiving groove; 48. Sealing convex ring; 49. Water passage groove; 401. Pressure holding chamber;

[0031] 5. Button component. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figures 1-7 As shown: A push-button valve core includes a housing 1, a base 2, a linkage rod 3, and a movable seal 4. The base 2 is detachably connected to the lower end of the housing 1, and has an inlet 21 and an outlet 22. The linkage rod 3 passes through the housing 1 and is controlled to move up and down by a button assembly 5. The movable seal 4 is slidably disposed within the base 2 and is used to open and close the outlet 22. The movable seal 4 has a pressure relief hole 40 along the central axis of the linkage rod. A retaining seat 11 and a sealing gasket 12 are disposed between the housing 1 and the base 2, and the retaining seat 11 and the sealing gasket 12 fit together. A pressure holding chamber 401 is disposed between the sealing gasket 12 and the movable seal 4. The pressure relief hole 40 communicates with the pressure holding chamber 401. A spring 13 is provided between the 11 and the button assembly 5. A soft seal 31 is provided at one end of the linkage rod 3 that passes through the retaining seat 11 and the sealing gasket 12. The soft seal 31 is used to open and close the pressure relief hole 40. A water passage groove 49 is provided on the movable seal 4 to connect the pressure holding chamber 401 and the water inlet 21. By designing the water passage groove to connect the pressure holding chamber and the water inlet, the pressure holding chamber is always connected to the water inlet. By pressing the button assembly, the soft seal on the linkage rod can seal or open the pressure relief hole on the movable seal. Since the pressure holding chamber is always connected to the water inlet, there is always liquid in the pressure holding chamber. The user does not need to press the button assembly to open or close the device. The above-mentioned button assembly is existing technology and will not be described in detail here.

[0034] In the aforementioned push-button valve core, the movable sealing element 4 includes a piston 41, an O-ring 42, and an angled sealing ring 43. The upper end of the piston 41 has a receiving ring groove 44 for accommodating the O-ring 42, and the lower end has a receiving ring groove 45 for accommodating the angled sealing ring 43. The water passage groove 49 is located on the upper side wall 46 of the receiving ring groove 44, and the receiving ring groove 44 and the O-ring 42 are in clearance fit. The outer side of the O-ring 42 contacts the inner wall of the piston 41. The angled sealing ring 43 is used in conjunction with the water outlet 22. Specifically, the water outlet 22 has a chamfered angle that is used in conjunction with the angled sealing ring, and the number of water passage grooves is at least one. This utility model uses one.

[0035] In the above-mentioned press type valve core, the upper end of the movable sealing member 4 is provided with a receiving groove 47 for the soft sealing member 31 to extend into, the pressure relief hole 40 is located in the receiving groove 47, the lower end of the pressure relief hole 40 is always in communication with the water outlet 22, a sealing convex ring 48 is protrudingly formed in the receiving groove 47, and the sealing convex ring 48 is arranged around the circumferential side of the pressure relief hole 40. Specifically, when the soft sealing member seals the pressure relief hole, the soft sealing member will be deformed by being pushed downward through the linkage rod, and the lower end of the soft sealing member wraps the upper side of the sealing convex ring, so as to further play a role in sealing the pressure relief hole.

[0036] In the above-mentioned press type valve core, the retaining seat 11 is provided with a through hole one 111 for the linkage rod 3 to pass through, the sealing gasket 12 is provided with a through hole two 112 for the linkage rod 3 to pass through, the through hole one 111 and the linkage rod 3 are in clearance fit, the through hole two 112 and the linkage rod 3 are in interference fit, and the through hole two 112 is a tapered hole structure. Specifically, this can improve the sealing performance between the linkage rod and the sealing gasket, and the upper opening of the through hole two is larger than the lower opening.

[0037] In the above-mentioned press type valve core, the inner side of the lower end of the shell 1 is provided with a clamping ring groove 10, the outer side of the upper end of the base 2 is provided with a clamping convex ring 20 matched with the clamping ring groove 10, and the shell 1 is provided with a deformation groove 101 communicating with the clamping ring groove 10. Specifically, this is to facilitate the connection between the base and the shell. When the base is inserted into the shell, the designed deformation groove 101 can be slightly expanded outward, facilitating the insertion of the base into the shell. The shell of the utility model preferably adopts two deformation grooves, and the two deformation grooves are oppositely arranged on the shell.

[0038] In the above-mentioned press type valve core, the upper end surface of the base 2 is provided with a convex rib 201 for abutting against the lower end surface of the sealing gasket 12. Specifically, this is to further improve the sealing performance of the two.

[0039] In the above-mentioned press type valve core, the sealing gasket 12 and the soft sealing member 31 are both made of silica gel or rubber material.

[0040] Working principle: when the valve core needs to be opened, just press the button assembly 5, the button assembly 5 drives the linkage rod 3 to move upward through the elasticity of the spring 13, the linkage rod 3 drives the soft sealing piece 31 to move upward, the soft sealing piece 31 opens the pressure relief hole 40, the water in the pressure maintaining cavity 401 is discharged from the pressure relief hole 40, at the same time the water in the water inlet 21 pushes the movable sealing piece 4 to move upward, at this time the water in the water inlet 21 is discharged through the water outlet 22; when the valve core needs to be closed, just press the button assembly 5 again, the button assembly 5 drives the linkage rod 3 and the soft sealing piece 31 to move downward as a whole, the soft sealing piece 31 seals the pressure relief hole 40, at the same time the soft sealing piece 31 also pushes the movable sealing piece 4 to move downward as a whole, finally the inclined sealing ring 43 seals the water outlet 22.

[0041] After the valve core is closed, the water in the water inlet 21 enters the base 2 and extrudes the inner side of the O-shaped ring 42, so that the water flow enters the water passing groove 49 from between the O-shaped ring 42 and the containing ring groove 44, then the water flow passes through the water passing groove 49 and enters the pressure maintaining cavity 401 from the gap between the piston 41 and the inner wall of the base 2, so that the water storage state is formed in the pressure maintaining cavity 401; until the valve core is opened, the linkage rod 3 and the soft sealing piece 31 move upward, the pressure relief hole 40 discharges the water stored in the pressure maintaining cavity 401 and the containing groove 47 from the water outlet 22, at this time the water pressure in the pressure maintaining cavity 401 is lower than the water pressure at the water inlet 21, the piston 41 moves upward, so that the water outlet 22 is communicated with the water inlet 21, the water flow in the water inlet 21 can flow out from the water outlet 22, that is, the water storage in the pressure maintaining cavity 401 can be used as the buffer of the piston 41, avoiding the vibration or high-speed movement of the piston 41 affected by the water hammer, the piston 41 can move upward at a slow speed, improving the service life thereof; at the same time, even if the water pressure fluctuates, the piston 41 in the slidable state can stabilize the water pressure at the water inlet 21 and the water outlet 22, thereby stabilizing the water outlet of the valve core.

[0042] The above embodiment is only a preferred embodiment of the present application, and does not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A push valve core comprising a housing (1), a base (2), a linkage rod (3) and a movable seal (4), characterized in that: The base (2) is detachably connected with the lower end of the shell (1), and the base (2) is provided with a water inlet (21) and a water outlet (22), the linkage rod (3) is arranged in the shell (1), and the linkage rod (3) is controlled to move up and down through the button assembly (5), the movable sealing element (4) is slidably arranged in the base (2) and is used for opening and closing the water outlet (22), the movable sealing element (4) is provided with a pressure relief hole (40) along the central axis of the linkage rod, the shell (1) and the base (2) are provided with a retaining seat (11) and a sealing gasket (12), the retaining seat (11) and the sealing gasket (12) are attached to each other, the sealing gasket (12) and the movable sealing element (4) are provided with a pressure maintaining cavity (401), the pressure relief hole (40) and the pressure maintaining cavity (401) are communicated, the retaining seat (11) and the button assembly (5) are provided with a spring (13), one end of the linkage rod (3) passes through the retaining seat (11) and the sealing gasket (12) and is provided with a soft sealing element (31), the soft sealing element (31) is used for opening and closing the pressure relief hole (40), and the movable sealing element (4) is provided with a water passing groove (49) communicating the pressure maintaining cavity (401) and the water inlet (21).

2. The push valve spool of claim 1, wherein: The movable sealing element (4) comprises a piston (41), an O-shaped ring (42) and an inclined angle sealing ring (43), the piston (41) is provided with an accommodating annular groove one (44) accommodating the O-shaped ring (42) at the upper end, and is provided with an accommodating annular groove two (45) accommodating the inclined angle sealing ring (43) at the lower end, the water passing groove (49) is located on the upper side groove wall (46) of the accommodating annular groove one (44), and the accommodating annular groove one (44) and the O-shaped ring (42) are gap-fitted, the outer side surface of the O-shaped ring (42) is in contact with the inner wall of the piston (41), and the inclined angle sealing ring (43) is used in cooperation with the water outlet (22).

3. The push valve spool of claim 2, wherein: The upper end of the movable sealing element (4) is provided with an accommodating groove (47) for the soft sealing element (31) to extend into, and the pressure relief hole (40) is located in the accommodating groove (47).

4. The push valve spool of claim 3, wherein: The accommodating groove (47) is protruded and formed into a sealing convex ring (48), and the sealing convex ring (48) is arranged around the circumferential side of the pressure relief hole (40).

5. A push valve according to claim 1 or 2 or 3 or 4, characterised in that: The retaining seat (11) is provided with a through hole one (111) for the linkage rod (3) to pass through, and the sealing gasket (12) is provided with a through hole two (112) for the linkage rod (3) to pass through.

6. The push valve spool of claim 5, wherein: The through hole one (111) and the linkage rod (3) are gap-fitted, the through hole two (112) and the linkage rod (3) are interference-fitted, and the through hole two (112) is a tapered hole structure.

7. The push valve spool of claim 5, wherein: The lower end of the shell (1) is provided with a clamping ring groove (10) on the inner side, and the upper end of the base (2) is provided with a clamping convex ring (20) used in cooperation with the clamping ring groove (10) on the outer side.

8. The push valve spool of claim 7, wherein: The shell (1) is provided with a deformation groove (101) communicating with the clamping ring groove (10).

9. The push valve spool of claim 8, wherein: The upper end surface of the base (2) is provided with a convex rib (201) used for abutting against the lower end surface of the sealing gasket (12).

10. The push valve core according to any one of claims 1-4, characterized in that: The sealing gasket (12) and the soft sealing member (31) are made of silica gel or rubber.

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