One-way drainage non-return structure

Abstract

The utility model discloses a one-way drainage non-return structure which comprises a vertical one-way valve, the vertical one-way valve comprises a bottom shell, a shell, a spring and a top cover, the spring is installed on the bottom shell, the top cover is supported on the spring and moves along with stretching of the spring, and the bottom shell is connected with the shell. The top cover is covered with the shell, a water outlet hole opposite to the top cover is formed in the shell, and under natural supporting of the spring, the top cover is jacked up from the lower portion of the water outlet hole to block the water outlet hole, so that water sealing is achieved; when the top cover is subjected to downward pressure, the spring is compressed, and the top cover moves towards the lower part of the water outlet hole, so that water drainage is realized. The vertical one-way valve is installed in a drainage system of a water pool, when no water is discharged, no water pressure exists above the top cover, the top cover is jacked up to achieve water sealing, and backflow of odor and water in a pipeline can be prevented; when water needs to be drained, the top cover is pressed downwards under the pressure of the water, the top cover is separated from the water outlet hole, the water outlet hole is communicated, and normal drainage is achieved. The vertical one-way valve is easy and convenient to install, can be applied to various drainage systems and is high in universality.

Description

Technical Field

[0001] The utility model relates to the field of drains, in particular to a one-way drainage anti-return structure. Background Art

[0002] During the drainage process of the pool, in order to facilitate drainage, a drainage system will be installed under the pool. The drainage system mainly includes a drainage pipe connected to the bottom of the pool. The drainage systems in the entire building are interconnected, and there will be a situation where the odor flows back from the drainage pipe, so an anti-odor and anti-backflow structure will be installed in the drainage system. The existing anti-odor and anti-backflow structure mainly adopts water seal anti-odor, such as the anti-odor component disclosed in the utility model patent document with application number CN202322124088.5, which includes an upper tube body and a lower cup body. The interior of the lower cup body is provided with a water storage cavity, and the side wall of the lower cup body is provided with a water outlet pipe. The upper end of the lower cup body is provided with a water inlet pipe, and the lower end of the water inlet pipe extends into the water storage cavity. Sewage enters the water storage cavity through the water inlet pipe, and a U-shaped anti-odor structure is formed between the water inlet pipe and the water storage cavity, so that the water discharged from the drain forms a water sealing area at the liquid outlet end of the water inlet pipe to avoid the occurrence of odor. However, this structure is designed in the water pipe. In a sewage system without an anti-odor function, if it is necessary to achieve anti-odor and anti-backflow, the water pipe needs to be replaced, which is inconvenient to use.

[0003] Therefore, how to design a odor-proof and backflow-proof structure that is highly versatile and easy to install is the technical problem to be solved by the present invention. Utility Model Content

[0004] The main purpose of the utility model is to provide a one-way drainage anti-return structure, which aims to prevent odor and backflow and is easy to install.

[0005] The utility model proposes a one-way drainage check structure, including a vertical one-way valve, the vertical one-way valve including a bottom shell, a shell, a spring, and a top cover, the spring being installed on the bottom shell, the top cover being supported on the spring and moving with the expansion and contraction of the spring, the bottom shell being connected to the shell, the shell covering the top cover, the shell having a water outlet hole opposite to the top cover, the top cover being lifted from below the water outlet hole under the natural support of the spring to block the water outlet hole, thereby achieving water sealing; when the top cover is subjected to downward pressure, the spring is compressed, and the top cover moves toward below the water outlet hole, thereby achieving drainage.

[0006] Preferably, a sealing gasket is installed on the front end surface of the top cover, and when the top cover is in a water-sealed state, the sealing gasket abuts against the edge of the water outlet.

[0007] Preferably, the top cover includes a cover plate and a guide post located on the back side of the cover plate, and the bottom shell is provided with a guide hole, and the guide post is inserted into the guide hole.

[0008] Preferably, the guide hole passes through the bottom shell, and a limiting head is provided at the lower end of the guide column. The limiting head extends out of the guide hole, and the outer diameter of the limiting head is larger than the aperture of the guide hole.

[0009] Preferably, the limit head is composed of a plurality of blocks arranged around the outer wall of the lower end of the guide column, and the side wall of the guide column is provided with hollow grooves spaced between the blocks, and the hollow grooves allow the lower end of the guide column to shrink and deform inward.

[0010] Preferably, a spring installation groove for installing the spring is provided on the bottom shell, and the spring installation groove surrounds the periphery of the guide hole.

[0011] Preferably, the bottom shell is connected to the lower port of the shell through a snap-fit ​​structure, and the bottom shell has a hollow opening for water supply and drainage.

[0012] Preferably, it comprises an inner cup and a horizontal cup connected to the inner cup, the vertical one-way valve is installed in the inner cup, and a sealing ring is provided on the outer wall of the shell, and the sealing ring is tightly attached between the outer wall of the shell and the inner wall of the inner cup.

[0013] Preferably, a check valve is installed in the inner cavity of the transverse section of the horizontal cup, and the check valve includes a valve body, a flap and a gravity ball. The valve body is provided with a flow port, the flap is hinged on the valve body, and is tilted to cover the flow port. The flap is tilted along the water outlet direction, and the tilt angle is less than 90°, and the gravity ball is arranged on the flap.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The one-way drainage check structure proposed in this utility model includes a vertical one-way valve. The vertical one-way valve includes a bottom shell, a housing, a spring, and a top cover. The spring is mounted on the bottom shell, and the top cover is supported by the spring. The top cover moves as the spring expands and contracts. The bottom shell and the housing are connected and integrated. The housing covers the top cover, and the housing has a water outlet opposite the top cover. Under the natural support of the spring, the top cover rises from below the water outlet to block the water outlet, thereby sealing the water. When the top cover is subjected to downward pressure, the spring is compressed, and the top cover moves downward to seal the water outlet, thereby achieving water drainage. The vertical one-way valve is installed in the sewage system of a pool. When there is no water to be discharged, there is no water pressure above the top cover, and the top cover rises to seal the water, thereby preventing odor and water backflow in the pipe. When water needs to be discharged, the water pressure pushes the top cover downward, the top cover detaches from the water outlet, and the water outlet is connected, achieving normal drainage. The vertical one-way valve is easy to install and can be used in various sewage systems, with high versatility.

[0016] 2. A sealing gasket is installed on the front end surface of the top cover. When the top cover is in a water-sealing state, the sealing gasket rests against the edge of the water outlet, so that the top cover and the edge of the water outlet can fit tightly, further improving the function of preventing odor and backflow.

[0017] 3. The top cover consists of a cover plate and a guide post on the back of the cover plate. The bottom shell has a guide hole, and the guide post is inserted into the guide hole. This structural design allows the top cover to move downward effectively when pressed, ensuring drainage performance.

[0018] 4. The bottom shell of the present invention is connected to the lower port of the shell through a snap-fit ​​structure. This connection method makes the connection between the bottom shell and the shell more secure and not easy to fall off when subjected to external force, thereby ensuring the normal operation of the vertical one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a vertical one-way valve in an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the structural decomposition of the vertical one-way valve in an embodiment of the present utility model.

[0021] Figure 3 It is a structural schematic diagram of the top cover of the vertical one-way valve in an embodiment of the present utility model.

[0022] Figure 4 This is a schematic diagram of the non-return valve in the embodiment of the present utility model in a water-sealing state.

[0023] Figure 5 This is a schematic diagram of the check valve in the embodiment of the present utility model in the drainage state.

[0024] Figure 6 This is a schematic diagram of the structural decomposition of the one-way drainage check structure in an embodiment of the present utility model.

[0025] Figure 7 This is a cross-sectional view of the one-way drainage and non-return structure in the embodiment of the present utility model in a water-sealed state.

[0026] Figure 8 This is a cross-sectional view of the one-way drainage and non-return structure in the embodiment of the present utility model in the drainage state.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout identify the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] Reference Figures 1 to 8 , an embodiment of a one-way drainage check structure of the utility model is proposed:

[0032] A one-way drainage check valve structure includes a vertical one-way valve 1, which includes a bottom shell 14, a shell 11, a spring 13, and a top cover 12. The spring 13 is mounted on the bottom shell 14, and the top cover 12 is supported on the spring 13. The top cover 12 moves as the spring 13 expands and contracts. The bottom shell 14 and the shell 11 are connected and integrated. The shell 11 covers the top cover 12, and the shell 11 has a water outlet 111 opposite to the top cover 12. Under the natural support of the spring 13, the top cover 12 is lifted from below the water outlet 111 to block the water outlet 111, thereby sealing the water. When the top cover 12 is subjected to downward pressure, the spring 13 is compressed, and the top cover 12 moves below the water outlet 111, thereby achieving drainage. The vertical one-way valve 1 is installed in the drainage system of the pool. When there is no water to be discharged, there is no water pressure above the top cover 12, and the top cover 12 is lifted up to seal the water, which can prevent odor and water backflow in the pipe. When water needs to be discharged, the top cover 12 is pressed down under the water pressure, and the top cover 12 is separated from the water outlet 111, and the water outlet 111 is connected to achieve normal drainage. The vertical one-way valve 1 is easy to install and can be used in various drainage systems, with strong versatility.

[0033] The bottom shell 14 is connected to the lower port of the shell 11 through a snap-fit ​​structure, which is easy to assemble and makes the connection between the bottom shell 14 and the shell 11 more secure and not easy to fall off when subjected to external force, thereby ensuring the normal operation of the vertical one-way valve 1.

[0034] The bottom shell 14 includes an annular connecting frame 141 with a hollow opening. The outer wall of the connecting frame 141 is provided with a clamping block 142. The side wall of the housing 11 is provided with a clamping hole 112. The clamping hole 112 and the clamping block 142 form a snap-fit ​​structure. The clamping block 142 is snapped into the clamping hole 112 to connect the bottom shell 14 to the housing 11. The hollow opening is for water to pass through.

[0035] A sealing gasket 125 is installed on the front end surface of the top cover 12. When the top cover 12 is in a water-sealed state, the sealing gasket 125 rests against the edge of the water outlet 111, so that the top cover 12 and the edge of the water outlet 111 can fit tightly, further improving the function of preventing odor and backflow.

[0036] The bottom shell 14 is provided with an annular spring mounting groove 143 for mounting the spring 13. The connecting frame 141 is arranged around the spring mounting groove 143. The spring 13 is mounted in the spring mounting groove 143, and the upper end of the spring 13 supports the top cover 12.

[0037] The bottom shell 14 is provided with a guide hole 144, and the spring mounting groove 143 surrounds the outer periphery of the guide hole 144. The top cover 12 includes a cover plate 121 and a guide post 122 located on the back of the cover plate 121. The guide post 122 is inserted into the guide hole 144. The guide post 122 and the guide hole 144 cooperate to achieve the directional movement of the top cover 12. This structural design allows the top cover 12 to move downward effectively and stably when pressed downward, ensuring drainage performance.

[0038] The guide hole 144 passes through the bottom shell 14, and a limit head 123 is provided at the lower end of the guide column 122. The limit head 123 extends out of the guide hole 144. The outer diameter of the limit head 123 is larger than the aperture of the guide hole 144, so that the limit head 123 is limited outside the guide hole 144, thereby limiting the guide column 122 in the guide hole 144 and cannot be pulled out.

[0039] The stopper 123 is composed of a plurality of blocks surrounding the outer wall of the lower end of the guide post 122. The sidewall of the guide post 122 is provided with hollow slots 124 spaced between the blocks. The hollow slots 124 allow the lower end of the guide post 122 to retract inwardly. During assembly of the top cover 12 and the bottom shell 14, an external force causes the lower end of the guide post 122 to retract inwardly, allowing the stopper 123 to be inserted through the upper end of the guide hole 144 and extend from the lower end of the guide hole 144. After extending out of the guide hole 144, the lower end of the guide post 122 returns to its natural state, with the stopper 123 blocking the lower end of the guide hole 144.

[0040] The shape of the cover plate of the top cover 12 is not limited. In this embodiment, the top cover plate is circular, but in other embodiments, it can also be square or other shapes.

[0041] In order to further enhance the anti-odor and anti-backflow functions, a check valve 2 is provided. The check valve 2 is combined with the vertical one-way valve 1 to achieve double anti-odor and anti-backflow. The check valve 2 includes a valve body 21, a flap 23 and a gravity ball 24. The valve body 21 is provided with a flow port 22. The flap 23 is hinged on the valve body 21 and tilted to cover the flow port 22. The flow port 22 and the flap 23 are tilted along the water outlet direction, and the tilt angle is less than 90°. When draining, the water flow will flush the flap 23 open and drain smoothly. The gravity ball 24 is set on the flap 23 to increase the weight of the flap 23. When there is no water to be discharged, the flap 23 is pressed on the flow port 22 to prevent water from flowing back and odor from backwashing.

[0042] The check valve 2 and the vertical one-way valve 1 can be used separately or in combination, or they can be combined with the inner cup 3 and the horizontal cup 4 to form an integral structure. The inner cup 3 is connected at both ends, and is installed through the bottom of the pool. The horizontal cup 4 is located outside the pool and is connected to the bottom of the inner cup 3. The horizontal cup 4 is connected to the inner cup 3 and is connected to the inner cavity of the inner cup 3. The vertical one-way valve 1 is installed in the inner cup 3, and the check valve 2 is installed in the transverse section of the horizontal cup 4. The outer wall of the shell 11 is provided with a sealing ring 113, which is tightly attached between the outer wall of the shell 11 and the inner wall of the inner cup 3, enhancing the sealing between the vertical one-way valve 1 and the inner cup 3. When draining, water flows out of the vertical one-way valve 1 into the inner cavity of the horizontal cup 4, and then discharged from the check valve 2.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A one-way drainage check structure, comprising a vertical one-way valve, characterized in that: The vertical one-way valve includes a bottom shell, a shell, a spring, and a top cover. The spring is installed on the bottom shell, and the top cover is supported on the spring. It moves with the expansion and contraction of the spring. The bottom shell is connected to the shell, and the shell covers the top cover. The shell has a water outlet hole opposite to the top cover. Under the natural support of the spring, the top cover is lifted from under the water outlet hole to block the water outlet hole to achieve water sealing; when the top cover is subjected to downward pressure, the spring is compressed, and the top cover moves below the water outlet hole to achieve drainage.

2. The one-way drainage check structure according to claim 1, characterized in that: A sealing gasket is installed on the front end surface of the top cover. When the top cover is in a water-sealing state, the sealing gasket abuts against the edge of the water outlet.

3. The one-way drainage check structure according to claim 1, characterized in that: The top cover includes a cover plate and a guide post located on the back of the cover plate. The bottom shell is provided with a guide hole, and the guide post is inserted into the guide hole.

4. The one-way drainage check structure according to claim 3, characterized in that: The guide hole passes through the bottom shell, and a limiting head is provided at the lower end of the guide column. The limiting head extends out of the guide hole, and the outer diameter of the limiting head is larger than the aperture of the guide hole.

5. The one-way drainage check structure according to claim 4, characterized in that: The limit head is composed of a plurality of blocks arranged around the outer wall of the lower end of the guide column. The side wall of the guide column is provided with hollow grooves spaced between the blocks. The hollow grooves allow the lower end of the guide column to shrink and deform inward.

6. The one-way drainage check structure according to claim 3, characterized in that: The bottom shell is provided with a spring installation groove for installing the spring, and the spring installation groove surrounds the periphery of the guide hole.

7. The one-way drainage check structure according to any one of claims 1 to 6, characterized in that: The bottom shell is connected to the lower port of the shell through a snap-fit ​​structure, and the bottom shell is provided with a hollow opening for water supply and drainage.

8. The one-way drainage check structure according to claim 7, characterized in that: It includes an inner cup and a horizontal cup connected to the inner cup. The vertical one-way valve is installed in the inner cup. A sealing ring is provided on the outer wall of the shell, and the sealing ring is tightly attached between the outer wall of the shell and the inner wall of the inner cup.

9. The one-way drainage check structure according to claim 7, characterized in that: A check valve is installed in the inner cavity of the transverse section of the horizontal cup, and the check valve includes a valve body, a flap and a gravity ball. The valve body is provided with a flow port, the flap is hinged on the valve body, and is tilted to cover the flow port. The flap is tilted along the water outlet direction, and the tilt angle is less than 90°. The gravity ball is arranged on the flap.

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