One-way valve with diaphragm type rubber head

Abstract

The one-way valve comprises a shell, the shell is provided with a hollow water flow channel, a water outlet and a water inlet, the water outlet and the water inlet are communicated with the water flow channel, the one-way valve further comprises a diaphragm structure arranged at the water inlet, the diaphragm structure comprises a rubber head structure, the rubber head structure is arranged in the center of the diaphragm structure and used for forming a sealing face for the water inlet, and the rubber head structure is arranged in the middle of the diaphragm structure. Water flow is prevented from flowing out from the water inlet; the overflowing through holes are uniformly distributed on the outer ring of the rubber head structure in a surrounding manner and are used for water flow to pass through; the sealing structure is arranged on the outer periphery of the diaphragm structure and used for preventing water flow from leaking from the joint of the diaphragm structure and the inner wall of the shell. According to the utility model, the rubber head structure and the sealing structure are arranged together through the diaphragm structure, so that the sealing surface formed by the rubber head structure to the water inlet is always in the central position, the rubber head structure has a good resetting effect, the position deviation of the sealing surface caused by repeated use is avoided, the sealing effect is ensured, and meanwhile, the diaphragm structure is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a one-way valve with a diaphragm type rubber head. Background Art

[0002] A one-way valve is a directional control valve in which the fluid can only flow along the water inlet, but the medium at the water outlet cannot flow back. The one-way valve in the prior art generally has a sealing rubber head and a sealing ring at the water inlet to achieve a sealing effect. However, the sealing rubber head is not easy to fix and is usually prone to position displacement after repeated use, or the installation position is not correct and cannot be completely located at the center of the water inlet, causing sealing failure. It is also easily affected by impurities, and stains can easily cause the sealing surface to move, causing sealing failure. At the same time, the size of the sealing rubber head and the sealing ring is small, which is not conducive to the assembly of the one-way valve. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a one-way valve with a diaphragm-type rubber head is proposed to solve the problem that the sealing rubber head of the one-way valve in the prior art is easy to deviate.

[0004] The utility model solves the technical problem by adopting a technical solution: a one-way valve with a diaphragm rubber head is proposed, comprising: a housing, the housing is provided with a hollow water flow channel, and a water outlet and a water inlet communicated with the water flow channel, and also comprises: a diaphragm structure provided at the water inlet, the diaphragm structure comprising:

[0005] A rubber head structure, which is arranged at the center of the diaphragm structure and is used to form a sealing surface for the water inlet to prevent water from flowing out of the water inlet;

[0006] The flow holes are evenly distributed around the outer ring of the rubber head structure and are used to allow water to flow through;

[0007] The sealing structure is arranged on the outer periphery of the diaphragm structure and is used to prevent water from leaking from the connection between the diaphragm structure and the inner wall of the shell.

[0008] In some embodiments, the diaphragm structure, the rubber head structure, the flow hole and the sealing structure are concentric structures.

[0009] In some embodiments, the diameter of the rubber head structure is equal to or greater than the diameter of the water inlet.

[0010] In some embodiments, the number of the flow-through hole is at least one.

[0011] In some embodiments, the shell includes: an upper shell and a lower shell, and the lower shell is sleeved on the outer side of the upper shell.

[0012] In some embodiments, it further includes: a limit spring, wherein the limit spring is a compression spring, and the limit spring abuts between the upper shell and the diaphragm structure.

[0013] In some embodiments, the diaphragm structure further includes: a protruding structure, which is disposed at the center of the diaphragm structure and faces the water outlet.

[0014] In some embodiments, it also includes: a limiting frame, which is arranged at the water outlet, sleeved in the limiting spring, and coaxially arranged with the protruding structure.

[0015] In some embodiments, the diameter of the limit spring is larger at the top and smaller at the bottom, forming an inverted tower structure.

[0016] In some embodiments, the diaphragm structure is made of rubber material.

[0017] The one-way valve with a diaphragm rubber head of the utility model arranges the rubber head structure and the sealing structure together through the diaphragm structure, so that the sealing surface formed by the rubber head structure for the water inlet is always in the center position, so that the rubber head structure has a good resetting effect, avoiding position displacement of the sealing surface due to repeated use, and ensuring the sealing effect. At the same time, the diaphragm structure is easy to install, avoiding failure due to improper installation, and can also reduce the difficulty of assembly and reduce the assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 The figure shows a schematic cross-sectional structure diagram of the one-way valve of the utility model;

[0020] Figure 2 yes Figure 1 The schematic diagram of the exploded cross-sectional structure of the one-way valve shown;

[0021] Figure 3 The figure shows a plan view of the diaphragm structure of the one-way valve of the utility model;

[0022] Figure 4 The figure shows a three-dimensional structural schematic diagram of the diaphragm structure of the one-way valve of the utility model;

[0023] Figure 5 Shown is a schematic cross-sectional structure diagram of the diaphragm structure of the one-way valve of the utility model.

[0024] Description of the accompanying drawings: shell 100, upper shell 110, water outlet 111, lower shell 120, water inlet 121, limiting frame 130, limiting spring 140, diaphragm structure 200, rubber head structure 210, protrusion structure 220, flow hole 230, sealing structure 240. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 5 As shown, the embodiment of the utility model proposes a one-way valve with a diaphragm-type rubber head, comprising: a housing 100, the housing 100 is provided with a hollow water flow channel, and a water inlet 121 and a water outlet 111 connected to the water flow channel. The one-way valve also includes: a diaphragm structure 200, the diaphragm structure 200 is arranged at the water inlet 121 and is located in the water flow channel, the diaphragm structure 200 includes: a rubber head structure 210, a flow hole 230 and a sealing structure 240, the diaphragm structure 200, the rubber head structure 210, the flow hole 230 and the sealing structure 240 are coaxial structures, the rubber head structure 210 is arranged at the center of the diaphragm structure 200, the diameter of the rubber head structure 210 is equal to or greater than the diameter of the water inlet 121, and is used to seal the water inlet 121. 1 forms a sealing surface to prevent water from flowing out from the water inlet 121; the flow holes 230 are evenly distributed around the outer circle of the rubber head structure 210, and the rubber head structure 210 moves upward under the action of the water flow from the water inlet 121, and the water flows in from the water inlet 121, passes through the flow holes 230 of the diaphragm structure 200, enters the water flow channel, and then flows out from the water outlet 111; the sealing structure 240 is arranged on the outer periphery of the diaphragm structure 200 to prevent water from leaking from the connection between the diaphragm structure 200 and the inner wall of the housing 100.

[0027] The one-way valve sets the rubber head structure 210 and the sealing structure 240 together through the diaphragm structure 200, so that the sealing surface formed by the rubber head structure 210 on the water inlet 121 is always in the center position, and the rubber head structure 210 has a good resetting effect, avoiding the position displacement of the sealing surface due to repeated use, thereby ensuring the sealing effect. At the same time, the diaphragm structure 200 is easy to install, avoiding failure due to improper installation, and can also reduce the difficulty of assembly and reduce the assembly cost.

[0028] It can be understood that the sealing surface formed by the rubber head structure 210 is a plane seal. Compared with the inclined surface seal, the sealing effect of the rubber head structure 210 of the present invention is more reliable.

[0029] Optionally, the number of the flow hole 230 is at least one, and the shape of the flow hole 230 can be circular, bar-shaped, square, etc., which is not limited in this specification.

[0030] Further, in some embodiments, the housing 100 includes: an upper housing 110 and a lower housing 120, wherein the water outlet 111 is provided on the upper housing 110, the water inlet 121 is provided on the lower housing 120, and the outer wall diameter of the upper housing 110 is equal to or slightly smaller than the inner wall diameter of the lower housing 120, so that the lower housing 120 is sleeved on the outer side of the upper housing 110. The upper housing 110 and the lower housing 120 are sleeved together to form a water flow channel communicating with the water inlet 121 and the water outlet 111, wherein the connection method between the upper housing 110 and the lower housing 120 is the prior art and will not be described in detail herein.

[0031] Furthermore, the sealing structure 240 is arranged on the outer periphery of the diaphragm structure 200. The sealing structure 240 is in the shape of a protrusion facing upward and downward, and can be tightly connected with the grooves of the outer lower edge of the upper shell 110 and the inner lower edge of the lower shell 120. The sealing structure 240 is equivalent to an O-ring and can play a good sealing role.

[0032] Furthermore, in some embodiments, the one-way valve further includes: a limit spring 140, which is located in the water flow channel and abuts between the upper shell 110 and the diaphragm structure 200. The limit spring 140 is a compression spring, and the elastic force generated by the limit spring 140 in a compressed state causes the diaphragm structure 200 to generate downward pressure, so that the rubber head structure 210 can be closely attached to the water inlet 121. Only when water flows in from the water inlet 121, the rubber head structure 210 generates an upward impact force under the action of the water flow, so that the rubber head structure 210 moves away from the water inlet 121, so that the water flows into the water flow channel; when no water flows in, the sealing rubber head is stably fixed to the water inlet 121 under the action of its own gravity and spring pressure, preventing the water flow in the water flow channel and the water outlet 111 from flowing back to the water inlet 121.

[0033] Furthermore, in some embodiments, the diameter of the limit spring 140 is larger at the top and smaller at the bottom, forming an inverted tower structure, that is, the closer to the water outlet 111, the larger the diameter is, and the closer to the diaphragm structure 200, the smaller the diameter is, so that the limit spring 140 generates a vertical downward elastic force without causing the direction of the elastic force to deviate.

[0034] Furthermore, in some embodiments, the diaphragm structure 200 also includes: a protrusion structure 220, which is arranged at the center position of the diaphragm structure 200, the protrusion structure 220 is facing the water outlet 111, and its diameter is equal to or smaller than the minimum diameter of the limit spring 140, and the protrusion structure 220 is sleeved in the limit spring 140 to fix the limit spring 140.

[0035] Furthermore, in some embodiments, the one-way valve also includes a limiting frame 130, which is disposed at the water outlet 111, sleeved in the limiting spring 140, and coaxially arranged with the protruding structure 220. The limiting frame 130 is used to limit the movement of the protruding structure 220. When the rubber head structure 210 moves upward due to excessive impact of the water flow, the limiting frame 130 can limit the maximum distance of the rubber head structure 210 moving upward to prevent the rubber head structure 210 from being damaged or distorted.

[0036] The limiting frame 130 and the upper shell 110 can be an integral structure or a separate structure, and are connected by means of slots, mortise and tenon joints, or the like.

[0037] Furthermore, in some embodiments, a fixing slot is also provided at the lower end of the upper shell 110 for fixing and connecting the upper end of the limit spring 140 .

[0038] Furthermore, in some embodiments, the manufacturing material of the diaphragm structure 200 includes but is not limited to sealing materials such as rubber and resin.

[0039] The utility model has a one-way valve with a diaphragm rubber head, and the rubber head structure 210 and the sealing structure 240 are arranged together through the diaphragm structure 200, so that the sealing surface formed by the rubber head structure 210 on the water inlet 121 is always in the center position, so that the rubber head structure 210 has a good resetting effect, avoiding the position displacement of the sealing surface due to repeated use, and ensuring the sealing effect. At the same time, the diaphragm structure 200 is easy to install, avoiding failure due to improper installation, and can also reduce the difficulty of assembly and reduce the assembly cost.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model. All equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A one-way valve with a diaphragm-type rubber head, comprising: The housing is provided with a hollow water flow channel, and a water outlet and a water inlet communicated with the water flow channel, characterized in that it also includes: a diaphragm structure provided at the water inlet, the diaphragm structure comprising: A rubber head structure, which is arranged at the center of the diaphragm structure and is used to form a sealing surface for the water inlet to prevent water from flowing out of the water inlet; The flow holes are evenly distributed around the outer ring of the rubber head structure and are used to allow water to flow through; The sealing structure is arranged on the outer periphery of the diaphragm structure and is used to prevent water from leaking from the connection between the diaphragm structure and the inner wall of the shell.

2. The one-way valve with a diaphragm-type rubber head according to claim 1, characterized in that: The diaphragm structure, the rubber head structure, the flow hole and the sealing structure are cocentric structures.

3. The one-way valve with a diaphragm rubber head according to claim 1 or 2, characterized in that: The diameter of the rubber head structure is equal to or greater than the diameter of the water inlet.

4. The one-way valve with a diaphragm rubber head according to claim 1, characterized in that: The number of the flow-through hole is at least one.

5. The one-way valve with a diaphragm rubber head according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell, wherein the lower shell is sleeved on the outer side of the upper shell.

6. The one-way valve with a diaphragm rubber head according to claim 5, characterized in that: Also includes: The limit spring is a compression spring, and the limit spring abuts between the upper shell and the diaphragm structure.

7. The one-way valve with a diaphragm rubber head according to claim 6, characterized in that: The diaphragm structure further comprises: a protruding structure, which is arranged at the center of the diaphragm structure and faces the water outlet.

8. The one-way valve with a diaphragm rubber head according to claim 7, characterized in that: Also includes: A limiting frame is arranged at the water outlet, sleeved in the limiting spring, and coaxially arranged with the protruding structure.

9. The one-way valve with a diaphragm rubber head according to claim 6, characterized in that: The limit spring has a diameter that is larger at the top and smaller at the bottom, presenting an inverted tower-shaped structure.

10. The one-way valve with a diaphragm rubber head according to claim 1, characterized in that: The material of the diaphragm structure is rubber material.

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