Gravity type ratproof one-way valve

Abstract

The utility model provides a gravity type ratproof one-way valve, and belongs to the technical field of one-way valves. The problem that an existing one-way valve cannot effectively prevent mice, cockroaches and the like from passing through is solved. The gravity type ratproof one-way valve comprises a pipe body and a valve plate hinged to a water outlet of the pipe body, a sealing groove is formed in the inner wall of the pipe body and arranged along the circumferential edge of the water outlet of the pipe body, and when the valve plate blocks the water outlet of the pipe body under the action of the gravity of the valve plate, the circumferential edge of the valve plate is embedded into the sealing groove. The outer side wall of the valve plate is flush with the end face of the outer wall of the water outlet of the pipe body. The gravity type ratproof one-way valve has the advantage of improving the ratproof effect.

Description

Technical Field

[0001] This utility model belongs to the field of one-way valve technology and relates to a gravity-type rodent-proof one-way valve. Background Technology

[0002] A check valve is a directional control valve that prevents fluid from flowing in the opposite direction. Its core principle is that when the medium flows in the forward direction, it overcomes the spring force, friction, or gravity to open the valve port, and when it flows in the reverse direction, it closes, forming a seal.

[0003] Existing one-way valves, such as the novel multi-layer anti-odor floor drain core disclosed in Chinese patent literature [Patent No.: 201621108133.1; Application Publication No.: CN206205113U], include a floor drain housing and a water storage baffle. The upper edge of the floor drain housing is provided with an installation outer edge, and an inclined plate is provided on one side of the bottom of the floor drain housing. One end of the water storage baffle is connected to the bottom of the inclined plate, so that a water storage cavity is formed between the water storage baffle and the inclined plate. Two downwardly inclined silicone sheets are provided in the upper opening of the floor drain housing, and silicone baffles are provided close together at the bottom of the two silicone sheets. The two silicone baffles are located in the water storage cavity. An inclined gravity movable baffle is provided below the connection between the water storage baffle and the inclined plate through a hinge. A counterweight is provided on the outside of the gravity movable baffle. The gravity movable baffle is opposite to the drain cavity opening of the lower half of the floor drain housing and covers the drain cavity opening.

[0004] In this type of odor-proof drain core, a gravity-operated baffle covers the drain cavity opening under its own weight. The circumferential edge of the gravity-operated baffle rests against the end face of the drain cavity opening on the drain shell. After a period of use, scale will condense at the drain cavity opening, leaving a gap between the gravity-operated baffle and the drain shell. This creates a problem where rats, cockroaches, and other pests may be able to pry open the gravity-operated baffle and pass through the drain shell through this gap, making this type of drain core ineffective in preventing rats, cockroaches, and other pests from passing through. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a gravity-type rodent-proof one-way valve, which solves the technical problem of how to improve the rodent-proof effect of the one-way valve.

[0006] The purpose of this utility model can be achieved through the following technical solution: a gravity-type rodent-proof one-way valve, comprising a pipe body and a valve plate hinged to the outlet of the pipe body, characterized in that the inner wall of the pipe body has a sealing groove, the sealing groove is arranged along the circumferential edge of the outlet of the pipe body, when the valve plate blocks the outlet of the pipe body under its own weight, the circumferential edge of the valve plate is embedded in the sealing groove, and the outer wall of the valve plate is flush with the end face of the outer wall of the outlet of the pipe body.

[0007] When the valve plate seals the outlet of the pipe body under its own weight, its circumferential edge is embedded in the sealing groove. The outer wall of the valve plate is flush with the end face of the outer wall of the pipe body's outlet, meaning the valve plate is embedded within the pipe body and not exposed. This prevents rodents such as rats and cockroaches from moving the valve plate, thus preventing accidental opening and entry into the one-way valve, improving its rodent-proof effect. The sealing groove is located on the inner wall of the circumferential edge of the pipe body's outlet, essentially making the outlet's outer wall protrude outwards. The circumferential edge of the valve plate is embedded in the sealing groove, with the outer wall located outside the circumferential edge. This outer wall surrounds and shields the valve plate, ensuring it is fully embedded within the pipe body and not exposed. The outer wall of the valve plate is flush with the end face of the outer wall of the pipe body's outlet, with a flushing error of ±0.2mm.

[0008] In the aforementioned gravity-type rodent-proof one-way valve, the sealing groove is inclined downwards and outwards along the vertical direction. When the valve plate blocks the outlet of the pipe, the valve plate is also inclined downwards and outwards along the vertical direction. This structure allows the valve plate to perform a better one-way flow function, preventing accidental opening and improving the rodent-proof effect of the one-way valve.

[0009] In the aforementioned gravity-type rodent-proof one-way valve, the sealing groove is an open annular shape, with the annular opening located at the top of the pipe outlet. The pipe wall has a long, narrow clearance groove located at the top of the pipe outlet, with both ends connected to the two ends of the sealing groove. When the valve plate blocks the pipe outlet, the valve plate is partially embedded in the clearance groove. The clearance groove allows the top edge of the valve plate to be embedded, ensuring that the circumferential edge of the valve plate can be inserted into the sealing groove, preventing the valve plate from getting stuck, preventing the bottom of the valve plate from warping, and ensuring that the entire valve plate is embedded in the pipe body, thus improving the rodent-proof effect of the one-way valve.

[0010] In the aforementioned gravity-type rodent-proof one-way valve, when the valve plate blocks the outlet of the pipe body, there is a gap between the circumferential edge of the valve plate and the wall of the sealing groove. The gap is very small, between 0.1-0.2 mm. The gap prevents the valve plate from failing to embed into the outlet of the pipe body after thermal expansion and contraction, thus preventing the valve plate from being exposed and improving the rodent-proof effect of the one-way valve. At the same time, the gap allows the flowing water to better flush open the valve plate, enabling the one-way valve to better achieve unidirectional flow.

[0011] In the aforementioned gravity-type rodent-proof one-way valve, the wall of the sealing groove is inclined outwards along the direction from the inlet to the outlet of the pipe body, and the outer peripheral wall of the valve plate is also inclined outwards along the direction from the inlet to the outlet of the pipe body. This structure allows the flowing water to better open the valve plate, enabling the one-way valve to achieve better unidirectional flow.

[0012] In the aforementioned gravity-type rodent-proof one-way valve, the inclination angle of the sealing groove wall gradually increases from top to bottom, and the inclination angle of the outer peripheral wall of the valve plate also gradually increases from top to bottom. This structure allows the flowing water to better open the valve plate, enabling the one-way valve to achieve better unidirectional flow.

[0013] In the aforementioned gravity-type rodent-proof one-way valve, the pipe body has a recessed hinge space, within which two spaced-apart hinge plates are fixedly connected. The valve plate has a bent hinge portion at the center of its top, with hinge shafts at both ends. The hinge portion is located between the two hinge plates, and the two hinge shafts pass through the hinge holes of the two hinge plates, allowing the pipe body and valve plate to be hinged. This structure allows the valve plate and pipe body to be hinged together, and the hinge space prevents the hinge plates and hinge portion from being exposed, facilitating the installation of the one-way valve in the working environment.

[0014] In the aforementioned gravity-type rodent-proof one-way valve, the valve plate includes a flat plate for sealing the outlet of the pipe. Reinforcing ribs are present on both sides of the hinge, extending to the middle of the outer wall of the plate. The hinge, hinge shaft, plate, and reinforcing ribs are integrally formed by injection molding. The reinforcing ribs enhance the strength of the valve plate, making it less prone to damage and extending its service life.

[0015] Compared with the prior art, the gravity-type rodent-proof one-way valve provided by this utility model has the following advantages:

[0016] 1. The valve plate of this one-way valve is fully embedded in the pipe body, so that the valve plate is not exposed, making it impossible for rats, cockroaches, etc. to move the valve plate. The valve plate will not be opened by mistake, and rats, cockroaches, etc. cannot enter the one-way valve, thus improving the rodent prevention effect of the one-way valve.

[0017] 2. The one-way valve body is equipped with a sealing groove and a clearance groove to prevent the valve plate from getting stuck, prevent the bottom of the valve plate from tilting up, and allow the valve plate to be fully embedded into the pipe body, thereby improving the rodent-proof effect of the one-way valve. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the one-way valve when it is closed, as well as a magnified view of a part of the structure.

[0019] Figure 2 This is a cross-sectional view of the overall structure and an enlarged view of a part of the structure when the one-way valve is closed.

[0020] Figure 3 This is a schematic diagram of the overall structure of the one-way valve when it is open, as well as a magnified view of a part of the structure.

[0021] Figure 4This is an exploded view of the one-way valve body and valve plate, as well as a magnified view of a part of the structure.

[0022] In the figure, 1 is the pipe body; 11 is the outlet; 12 is the inlet; 13 is the hinge space; 2 is the valve plate; 21 is the hinge part; 22 is the hinge shaft; 23 is the plate; 24 is the reinforcing rib; 3 is the sealing groove; 4 is the clearance groove; 5 is the hinge piece; and 51 is the hinge hole. Detailed Implementation

[0023] 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.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this gravity-type rodent-proof one-way valve includes a pipe body 1, a valve plate 2, and a hinge plate 5.

[0025] The pipe body 1 has a recessed hinge space 13, located at the top of the outlet 11 of the pipe body 1. Two spaced-apart hinge pieces 5 are fixedly connected within the hinge space 13. For example... Figure 4 As shown, the valve plate 2 includes a flat plate body 23 for sealing the outlet 11 of the pipe body 1 and a hinge portion 21 located at the top center of the plate body 23 and bent. Both ends of the hinge portion 21 have hinge shafts 22. The hinge portion 21 is located between two hinge plates 5, and the two hinge shafts 22 are respectively inserted into the hinge holes 51 of the two hinge plates 5 to hinge the pipe body 1 to the valve plate 2. Both sides of the hinge portion 21 have reinforcing ribs 24, which extend to the middle of the outer wall of the plate body 23. The hinge portion 21, hinge shafts 22, plate body 23, and reinforcing ribs 24 are integrally formed by injection molding.

[0026] The inner wall of the pipe body 1 has a sealing groove 3, which is set along the circumferential edge of the outlet 11 of the pipe body 1. The sealing groove 3 is an open annular shape, and the annular opening of the sealing groove 3 is located at the top of the outlet 11 of the pipe body 1. The pipe wall of the pipe body 1 has a long strip-shaped clearance groove 4, which is located at the top of the outlet 11 of the pipe body 1. The two ends of the clearance groove 4 are respectively connected to the two ends of the sealing groove 3. When the valve plate 2 blocks the outlet 11 of the pipe body 1 under its own weight, the circumferential edge of the valve plate 2 is embedded in the sealing groove 3, and the valve plate 2 is partially embedded in the clearance groove 4. The outer wall of the valve plate 2 is flush with the end face of the outer wall of the outlet 11 of the pipe body 1.

[0027] The sealing groove 3 is inclined downward and outward in the vertical direction. When the valve plate 2 blocks the outlet 11 of the pipe body 1, the valve plate 2 is inclined downward and outward in the vertical direction, and there is a gap between the circumferential edge of the valve plate 2 and the groove wall of the sealing groove 3.

[0028] The wall of the sealing groove 3 is inclined outward along the direction from the inlet 12 of the pipe body 1 toward the outlet 11. The inclination angle of the wall of the sealing groove 3 gradually increases from top to bottom. The outer peripheral wall of the valve plate 2 is inclined outward along the direction from the inlet 12 of the pipe body 1 toward the outlet 11. The inclination angle of the outer peripheral wall of the valve plate 2 gradually increases from top to bottom.

[0029] In use, valve plate 2 seals the outlet 11 of pipe body 1 under its own weight. The circumferential edge of valve plate 2 is embedded in the sealing groove 3, and the outer wall of valve plate 2 is flush with the end face of the outer wall of outlet 11 of pipe body 1, thus closing the one-way valve. When water flows and impacts valve plate 2, overcoming its weight and pushing it to rotate, the one-way valve opens, and water flows out.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] Although this document frequently uses terms such as pipe body 1, outlet 11, inlet 12, hinge space 13, valve plate 2, hinge part 21, hinge shaft 22, plate 23, reinforcing rib 24, sealing groove 3, clearance groove 4, hinge piece 5, and hinge hole 51, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A gravity type rat-proof one-way valve comprising a pipe body (1) and a valve plate (2) hinged at the water outlet (11) of said pipe body (1), characterized in that, The inner wall of the pipe body (1) has a sealing groove (3), which is set along the circumferential edge of the outlet (11) of the pipe body (1). When the valve plate (2) blocks the outlet (11) of the pipe body (1) under its own weight, the circumferential edge of the valve plate (2) is embedded in the sealing groove (3), and the outer wall of the valve plate (2) is flush with the end face of the outer wall of the outlet (11) of the pipe body (1).

2. A gravity type rodent check valve according to claim 1, wherein The sealing groove (3) is inclined downward and outward in the vertical direction. When the valve plate (2) blocks the outlet (11) of the pipe body (1), the valve plate (2) is inclined downward and outward in the vertical direction.

3. A gravity type rodent check valve according to claim 1, wherein The sealing groove (3) is an open annular shape. The annular opening of the sealing groove (3) is located at the top of the outlet (11) of the pipe body (1). The pipe wall of the pipe body (1) has a long strip-shaped clearance groove (4). The clearance groove (4) is located at the top of the outlet (11) of the pipe body (1). The two ends of the clearance groove (4) are respectively connected to the two ends of the sealing groove (3). When the valve plate (2) blocks the outlet (11) of the pipe body (1), the valve plate (2) is partially embedded in the clearance groove (4).

4. A gravity type rodent check valve according to claim 1 or 2 or 3, wherein When the valve plate (2) blocks the outlet (11) of the pipe body (1), there is a gap between the circumferential edge of the valve plate (2) and the groove wall of the sealing groove (3).

5. A gravity type rodent check valve according to claim 1 or 2 or 3, wherein The wall of the sealing groove (3) is inclined outward along the direction from the inlet (12) of the pipe body (1) toward the outlet (11), and the outer peripheral wall of the valve plate (2) is inclined outward along the direction from the inlet (12) of the pipe body (1) toward the outlet (11).

6. A gravity-operated rodent check valve according to claim 5, wherein, The inclination angle of the sealing groove (3) wall gradually increases from top to bottom, and the inclination angle of the outer peripheral wall of the valve plate (2) gradually increases from top to bottom.

7. A gravity type rodent check valve as claimed in claim 1 or 2 or 3, wherein, The tube body (1) has a recessed hinge space (13), in which two spaced hinge pieces (5) are fixedly connected. The valve plate (2) has a bent hinge part (21) at the middle of the top. Both ends of the hinge part (21) have hinge shafts (22). The hinge part (21) is located between the two hinge pieces (5). The two hinge shafts (22) are respectively inserted into the hinge holes (51) of the two hinge pieces (5) so that the tube body (1) and the valve plate (2) are hinged.

8. A gravity-operated rodent check valve according to claim 7, wherein, The valve plate (2) includes a plate (23) in the shape of a flat plate for sealing the outlet (11) of the pipe body (1). The hinge part (21) has reinforcing ribs (24) on both sides. The two reinforcing ribs (24) extend to the middle of the outer side wall of the plate (23). The hinge part (21), the hinge shaft (22), the plate (23) and the reinforcing ribs (24) are integrally formed by injection molding.

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