Durable wafer type check valve

Abstract

The utility model discloses a durable double-clip type check valve, which relates to the technical field of double-clip type check valves and comprises a connecting pipe, a liquid flowing cavity, a liquid inlet cavity, a valve clack, a reset component and a retarding component. The retarding assembly comprises a batten fixed to the interior of the liquid inlet cavity, a compression groove formed in the batten, a second spring fixedly installed in the compression groove, a compression rod moving in the compression groove, a conical head fixed to the outer side of the compression rod, a closed groove formed in the bottom end of the valve clack and a connecting hole formed in the top end of the valve clack. The top end of the valve clack communicates with the interior of the liquid flowing cavity, the second spring is externally fixed to the compression rod so as to provide elastic support for the compression rod in the compression rod, a soft cushion layer is arranged in the closed groove and attached to the conical head, and the connecting hole communicates with the closed groove; the check valve has the advantages that by arranging the retarding assembly, when the valve clack is opened by water flow, the water flow is increased to flow upwards into the liquid flowing cavity at the connecting hole and the closed groove of the valve clack so as to reduce the pressure when the valve clack is impacted by the water flow, reduce the amplitude when the reset assembly moves repeatedly, and improve the durability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamped check valve, more particularly to a durable clamped check valve. BACKGROUND

[0002] Clamped check valve is a kind of valve for preventing the medium in pipeline from flowing reversely, and its working principle is to open and close valve by the flow of medium itself.When the medium flows in the predetermined direction, the valve will be opened automatically, and when the medium tries to flow reversely, the valve will be closed quickly to prevent the reverse flow.

[0003] The existing clamped check valve "such as application number: CN202021080649.6, a clamped check valve" and "application number: CN201320130534.7 a clamped check valve" shown, the valve flap closes the water opening, when the water flow washes the valve flap, the water flow needs to pass through the space between the periphery of valve flap and the inner wall of valve, at this time, when the space is small, the valve flap will be subjected to great pressure, and the pressure spring needs to bear the large repeated deformation frequently, which accelerates the damage, and the clamped check valve has the disadvantages of low durability. UTILITY MODEL CONTENTS

[0004] The utility model discloses a durable clamped check valve to solve the above technical problems.

[0005] The utility model discloses a durable clamped check valve to solve the above technical problems.

[0006] The utility model provides a durable clamped check valve, including the pipe and the liquid cavity and the liquid cavity that are equipped in it go, and the liquid cavity and the liquid cavity are communicated, and the liquid cavity and the liquid cavity are communicated respectively with the pipe outside,

[0007] Still include the valve flap that sticks to the liquid cavity one side to block the liquid cavity and the liquid cavity communication and the reset component that is fixed in the liquid cavity to the elastic pressure steady valve flap position,

[0008] Still include the slow down component that is fixed in the liquid cavity,

[0009] The slow down component includes the baffle fixed in the liquid cavity, the compression groove on the baffle, the second spring fixed in the compression groove, the compression rod that is movable in the compression groove, the taper head fixed with the outer side of the compression rod, the close groove on the bottom end of the valve flap, and the connecting hole on the top end of the valve flap,

[0010] The top end of the valve flap is communicated with the liquid cavity, the second spring is fixed with the compression rod outside to provide the elastic support of the compression rod in the compression rod, the close groove is provided with the soft pad layer and is attached with the taper head, and the connecting hole is communicated with the close groove.

[0011] As a preferred technical scheme of the utility model, the slowing down assembly is provided with multiple groups.

[0012] As a preferred technical scheme of the utility model, the multiple groups of slowing down assemblies are uniformly distributed in the ring shape in the liquid inlet cavity.

[0013] As a preferred technical scheme of the utility model, the soft pad layer is rubber.

[0014] As a preferred technical scheme of the utility model, the reset assembly comprises a guide ring, a connecting plate fixed with the guide ring, a guide rod movably arranged in the guide ring and a first spring sleeved on the guide rod, the outer side of the connecting plate is fixed in the liquid flowing cavity, the bottom end of the guide rod is fixed with the top end of the valve flap, and the top and bottom ends of the first spring are fixedly attached to the bottom end of the guide ring and the top end of the valve flap respectively.

[0015] The utility model has the advantages as follows:

[0016] By arranging the slowing down assembly, when the valve flap is opened by the water flow, the water flow can flow upwards to the liquid flowing cavity through the continuous hole and the closed groove of the valve flap, so that the pressure of the valve flap when impacted by the water flow is reduced, the amplitude of the repeated movement of the reset assembly is reduced, and the durability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model.

[0018] Reference signs: connecting pipe-1, liquid flowing cavity-2, liquid inlet cavity-3, valve flap-4, reset assembly-5, slowing down assembly-6, guide ring-51, connecting plate-52, guide rod-53, first spring-54, strip plate-61, compression groove-62, second spring-63, compression rod-64, taper head-65, closed groove-66, continuous hole-67. DETAILED DESCRIPTION

[0019] As Figure 1 shown, the utility model provides: a durable double-clamping type check valve, comprising a connecting pipe 1 and the liquid flowing cavity 2 and liquid inlet cavity 3 arranged in the connecting pipe 1, the liquid flowing cavity 2 and the liquid inlet cavity 3 are communicated, and the liquid flowing cavity 2 and the liquid inlet cavity 3 are respectively communicated with the outside of the connecting pipe 1;

[0020] It also comprises a valve flap 4 attached to one side of the liquid flowing cavity 2 to block the communication between the liquid flowing cavity 2 and the liquid inlet cavity 3, as shown in the figure, an annular attachment surface is arranged at the peripheral position of the bottom end of the liquid flowing cavity 2, and the bottom end of the valve flap 4 is attached to the attachment surface to block the communication between the liquid flowing cavity 2 and the liquid inlet cavity 3 (a rubber layer is fixedly attached to the bottom end of the valve flap 4 to improve the sealing performance when the attachment is sealed);

[0021] And reset assembly 5 is fixed in the liquid cavity 2 to elastically press the position of the valve 4, the reset assembly 5 is installed between the top of the valve 4 and the liquid cavity 2, and the reset assembly 5 generates an elastic support force downward on the valve 4, so that the position of the valve 4 is elastically pressed to stabilize the position;

[0022] The specific structure of the reset assembly 5 is shown as follows;

[0023] The reset assembly 5 includes a guide ring 51, a connecting plate 52 fixed with the guide ring 51, a guide rod 53 movably arranged in the guide ring 51, and a first spring 54 sleeved on the guide rod 53, the outer side of the connecting plate 52 is fixed in the liquid cavity 2, the bottom end of the guide rod 53 is fixed with the top end of the valve 4, and the top and bottom ends of the first spring 54 are fixedly attached to the bottom end of the guide ring 51 and the top end of the valve 4 respectively;

[0024] The guide ring 51 of the reset assembly 5 is centrally arranged in the liquid cavity 2 with the upper and lower ends of the ring facing upward, the connecting plate 52 is fixed on the outer periphery of the guide ring 51 and is fixed in the liquid cavity 2, the guide rod 53 is movably arranged in the guide ring 51 and is guided through the upper and lower ends of the guide ring 51, the bottom end of the guide rod 53 is fixed at the central position of the top end of the valve 4, and the first spring 54 sleeved on the outer periphery of the guide rod 53 is attached between the bottom end of the guide ring 51 and the top end of the valve 4 and provides elastic support, when water flows into the liquid cavity 3 and pushes the valve 4 upward, the water can flow upward through the space between the outer periphery of the valve 4 and the liquid cavity 2, when the water flow stops, the valve 4 is not under pressure and is reset downward under the action of the first spring 54;

[0025] Further comprising a slowing assembly 6 fixed in the liquid cavity 3, which does not block the upward flow of water in the liquid cavity 3;

[0026] The slowing assembly 6 includes a strip plate 61 fixed in the liquid cavity 3, a compression groove 62 arranged on the strip plate 61, a second spring 63 fixed in the compression groove 62, a compression rod 64 movably arranged in the compression groove 62, a tapered head 65 fixed on the outer side of the compression rod 64, a closed groove 66 arranged on the bottom end of the valve 4, and a connecting hole 67 arranged on the top end of the valve 4;

[0027] The top end of the valve 4 is in communication with the liquid cavity 2, the second spring 63 is fixed with the compression rod 64 on the outer side to provide elastic support for the compression rod 64 in the compression rod 64, the closed groove 66 is provided with a soft pad layer and is attached to the tapered head 65, the connecting hole 67 is in communication with the closed groove 66, and the internal space of the closed groove 66 and the tapered head 65 are gradually expanded from top to bottom;

[0028] The soft pad layer is rubber, which has high durability;

[0029] The strip 61 of the slowing assembly 6 is fixed at one end in the liquid inlet cavity 3, a compression groove 62 is arranged at the top end of the strip 61, the bottom end of the inner wall of the compression groove 62 is fixed by the bottom end of the second spring 63 which is upwardly directed by the elasticity, the top end of the second spring 63 is fixed to the bottom end of the compression rod 64, thus providing the compression rod 64 with elastic support upwardly and downwardly, the compression rod 64 provides the compression rod 64 with upward and downward guiding movement in the compression groove 62, the conical head 65 fixed at the top end of the compression rod 64 is tightly attached to the soft pad layer of the compression groove 62, the two ends of the valve disc 4 are communicated through the connecting hole 67 and the closing groove 66, the conical head 65 is tightly pressed by the elastic force of the second spring 63, but the elastic force of the second spring 63 cannot push the valve disc 4 upwardly;

[0030] According to the above, after the water flow pushes the valve disc 4 upwardly, the conical head 65 is also separated from the soft pad layer, at this time, the water flow can also flow upwardly in the connecting hole 67 and the closing groove 66 into the liquid outlet cavity 2, so as to reduce the pressure of the valve disc 4 when the water flow impacts the valve disc 4, reduce the amplitude of the repeated movement of the restoring assembly 5, and improve the durability;

[0031] Supplement: Although the space between the periphery of the valve disc 4 and the liquid outlet cavity 2 can be increased to increase the flow capacity, a larger manufacturing volume is required, and this has the disadvantage.

[0032] The slowing assembly 6 is provided with multiple groups (of course, the water flow in the liquid inlet cavity 3 cannot be blocked from flowing upwardly), and the number of groups can be reasonably set according to the flow capacity to facilitate the processing of the maximum flow utilization.

[0033] The multiple groups of the slowing assembly 6 are evenly distributed in a ring shape, the positions are reasonably set, and the uniformity of the flow is improved.

[0034] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0035] In addition, it should be understood that although the present application is described in the form of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A durable double-disc check valve, comprising a connecting pipe (1) and a liquid passing cavity (2) and a liquid inlet cavity (3) arranged in the connecting pipe (1), the liquid passing cavity (2) and the liquid inlet cavity (3) being communicated and the liquid passing cavity (2) and the liquid inlet cavity (3) being communicated with the outside of the connecting pipe (1) respectively; further comprising a valve disc (4) attached to one side of the liquid passing cavity (2) to block the communication between the liquid passing cavity (2) and the liquid inlet cavity (3) and a reset assembly (5) fixed in the liquid passing cavity (2) to elastically press and stabilize the position of the valve disc (4); characterized in that further comprising a slowing assembly (6) fixed in the liquid inlet cavity (3); the slowing assembly (6) comprises a strip plate (61) fixed in the liquid inlet cavity (3), a compression groove (62) arranged on the strip plate (61), a second spring (63) fixed in the compression groove (62), a compression rod (64) movably arranged in the compression groove (62), a tapered head (65) fixed to the outside of the compression rod (64), a closing groove (66) arranged at the bottom end of the valve disc (4), and a connecting hole (67) arranged at the top end of the valve disc (4); the top end of the valve disc (4) is communicated with the liquid passing cavity (2), the second spring (63) is fixed to the outside of the compression rod (64) to provide elastic support for the compression rod (64) in the compression groove (64), the closing groove (66) is provided with a soft pad layer and is attached to the tapered head (65), and the connecting hole (67) is communicated with the closing groove (66).

2. A durable, clamp-on check valve according to claim 1, wherein, The slowing assembly (6) is provided with multiple groups.

3. A durable, clamp-on check valve according to claim 1, wherein, The multiple groups of the slowing assembly (6) are evenly distributed in a ring shape.

4. A durable, clamp-on check valve according to claim 1, wherein, The soft pad layer is rubber.

5. A durable, clamp-on check valve according to claim 1, wherein, The reset assembly (5) comprises a guide ring (51), a connecting plate (52) fixed to the guide ring (51), a guide rod (53) movably arranged in the guide ring (51), and a first spring (54) sleeved on the outside of the guide rod (53), the outside of the connecting plate (52) is fixed in the liquid passing cavity (2), the bottom end of the guide rod (53) is fixed to the top end of the valve disc (4), and the top and bottom ends of the first spring (54) are respectively attached and fixed to the bottom end of the guide ring (51) and the top end of the valve disc (4).

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