Automatic check valve for water inlet
By installing a float valve automatic check valve at the inlet, the problem of water backflow in the drainage system is solved by using buoyancy to block the inlet, thus achieving unidirectional water flow control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-03
AI Technical Summary
During the flood season or when the water level is too high, sewage in the drainage system is prone to backflow, causing sewage to overflow through the inlet pipe.
Design an automatic check valve for the water inlet, which uses a float valve to block the water inlet under the action of buoyancy to prevent water backflow.
It effectively prevents water from overflowing and flowing back into the drainage pipes, ensuring that the water flows in one direction only.
Smart Images
Figure CN224079691U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a check valve, and more particularly to an automatic check valve for a water inlet. Background Technology
[0002] Currently, the drainage system is connected by drainage pipes. During the flood season or when the water level is too high, sewage may overflow from the drainage pipes, causing sewage to flow back through the inlet pipe. To address this issue, we propose an automatic check valve at the inlet to solve the problem. Utility Model Content
[0003] This application provides an automatic check valve for water inlet to solve the problems existing in related technologies. The technical solution is as follows:
[0004] This application provides an automatic check valve for water inlets, suitable for pipelines, including:
[0005] The shell is installed on the pipeline. The shell has a conveying space inside, which is connected to the water conveying chamber of the pipeline. The shell also has a water inlet.
[0006] The float valve has a first state and a second state. When the float valve is in the first state, it is located at the bottom of the conveying space. When the float valve is in the second state, it is located at the top of the conveying space and is in contact with the inlet.
[0007] The limiting element is mounted on the housing and located within the conveying space. The float valve is mounted on the limiting element.
[0008] In one implementation,
[0009] The area of the top view section of the float valve is smaller than the area of the top view section of the conveying space.
[0010] In one implementation,
[0011] When the float valve is in the second state, it blocks the inlet.
[0012] In one implementation,
[0013] The main visible cross-sectional area of the float valve is equal to the main visible cross-sectional area of the conveying space.
[0014] In one implementation,
[0015] The float valve has a movable cavity that is adapted to the limiting element, with the end of the limiting element away from the pipeline located in the movable cavity.
[0016] In one implementation,
[0017] Limiting components include:
[0018] A fixing rod is installed inside the housing, with the end of the fixing rod furthest from the housing located inside the movable cavity.
[0019] The limiting plate is located inside the movable cavity and is set on the end of the fixed rod away from the housing.
[0020] In one implementation,
[0021] The float valve has a through hole that connects to the movable chamber, and the size of the through hole is adapted to the size of the fixed rod.
[0022] In one implementation,
[0023] The size of the limiting plate is adapted to the size of the movable cavity, and the size of the limiting plate is larger than the size of the through hole.
[0024] In one implementation, it further includes:
[0025] The cover is detachably mounted on the housing.
[0026] In one implementation, it further includes:
[0027] The water inlet pipe is connected to the water inlet.
[0028] The advantages or beneficial effects of the above technical solutions include at least the following:
[0029] By setting up a float valve, when there is a lot of water in the water delivery chamber of the pipeline, the float valve floats along the limiting component into the delivery space of the shell under the action of buoyancy. Then, the float valve blocks the water inlet, preventing water in the pipeline from overflowing through the water inlet and also preventing water in the pipeline from being discharged out through the water inlet, causing backflow.
[0030] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0031] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.
[0032] Figure 1 This is a schematic diagram of the exploded structure of this utility model;
[0033] Figure 2 This is a schematic diagram of the cross-sectional structure of the pipeline and float valve in the second state.
[0034] Figure 3 This is a schematic diagram of the internal structure of a float valve;
[0035] Figure 4 This is a top view of the cross-sectional structure of the float valve and the housing in the second state.
[0036] Figure 5 This is a schematic diagram of the main cross-sectional structure of the float valve and the housing in the first state;
[0037] 100. Shell; 110. Conveying space; 120. Inlet;
[0038] 200, float valve; 210, movable chamber; 220, through hole;
[0039] 300. Limiting component; 310. Fixing rod; 320. Limiting plate;
[0040] 400. Pipeline; 410. Water delivery chamber;
[0041] 500, cover; 600, water inlet pipe. Detailed Implementation
[0042] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0043] Figures 1-5 This diagram illustrates the structure of an automatic check valve for an inlet 120 according to an embodiment of this application. Figures 1-5 As shown, the check valve may include:
[0044] The housing 100 is mounted on the pipe 400. The housing 100 has a conveying space 110 inside, which is connected to the water conveying chamber 410 of the pipe 400. The housing 100 also has a water inlet 120.
[0045] The float valve 200 has a first state and a second state. When the float valve 200 is in the first state, it is located at the bottom of the conveying space 110. When the float valve 200 is in the second state, it is located at the top of the conveying space 110 and is in contact with the inlet 120.
[0046] The limiting element 300 is installed on the housing 100 and located within the conveying space 110. The float valve 200 is installed on the limiting element 300.
[0047] In this embodiment, in the initial state, the float valve 200 is located at the lower position of the conveying space 110. When the water level in the pipe 400 rises, under the action of buoyancy, the float valve 200 moves along the limiting member 300 to the higher position of the conveying space 110 of the housing 100, and the inlet 120 is blocked by the float valve 200 to prevent the water level in the pipe 400 from rising and causing water to overflow through the inlet 120.
[0048] By setting the float valve 200, when there is a lot of water in the water delivery chamber 410 in the pipe 400, the float valve 200 floats along the limiting member 300 to a higher position in the delivery space 110 of the housing 100 under the action of buoyancy. Then, the float valve 200 blocks the water inlet 120, preventing the water in the pipe 400 from overflowing through the water inlet 120 and also preventing the water in the pipe 400 from being discharged through the water inlet 120, causing backflow.
[0049] Specifically, the first state of the float valve 200 is when the water level in the pipeline 400 is normal. At this time, the float valve 200 is located at the lower position of the conveying space 110 of the housing 100.
[0050] The second state of the float valve 200 is when the water level in the pipe 400 is too high. At this time, the float valve 200 blocks the inlet 120 under the buoyancy of the water in the pipe 400.
[0051] like Figure 4 As shown, in one embodiment,
[0052] The area of the top view section of the float valve 200 is smaller than the area of the top view section of the conveying space 110.
[0053] In this embodiment, the top view area of the float valve 200 is smaller than that of the top view area of the conveying space 110, and their shapes are adapted to each other so as to ensure that when the float valve 200 moves in the conveying space 110, the side of the float valve 200 facing the inlet 120 fits against the housing 100, ensuring that the float valve 200 seals the inlet 120.
[0054] Furthermore, when the float valve 200 is in the second state, the float valve 200 blocks the inlet 120.
[0055] like Figure 5 As shown, in one embodiment,
[0056] The main view cross-sectional area of float valve 200 is equal to the main view cross-sectional area of conveying space 110.
[0057] In this embodiment, the main view cross-sectional area of the float valve 200 is equal to the main view cross-sectional area of the conveying space 110, so as to ensure that both sides of the float valve 200 fit with the outer shell 110, thereby preventing the float valve 200 from shaking in the conveying space 110.
[0058] like Figures 2-3 As shown, in one embodiment,
[0059] The float valve 200 has a movable cavity 210 adapted to the limiting member 300, with the end of the limiting member 300 away from the pipeline 400 located in the movable cavity 210.
[0060] In this embodiment, the floating distance of the float valve 200 is limited by the setting of the movable cavity 210, so as to avoid the float valve 200 rising too high, causing the water inlet 120 to leak from the bottom of the float valve 200.
[0061] like Figures 2-3 As shown, in one embodiment,
[0062] Limiting component 300 includes:
[0063] A fixing rod 310 is disposed inside the housing 100, with one end of the fixing rod 310 away from the housing 100 located inside the movable cavity 210;
[0064] The limiting plate 320 is located inside the movable cavity 210 and is set on the end of the fixed rod 310 away from the housing 100.
[0065] In this embodiment, the float valve 200 moves along the fixed rod 310. At least one fixed rod 310 is provided, and the preferred number of fixed rods 310 is two, so as to prevent the float valve 200 from rotating under the impact of water flow.
[0066] The limiting plate 320 and the fixed rod 310 are arranged in a "T" shape. When the float valve 200 is in the first state, the limiting plate 320 is located at the top of the movable cavity 210. When the float valve 200 is in the second state, the limiting plate 320 is located at the bottom of the movable cavity 210. By setting the limiting plate 320, the movement trajectory of the float valve 200 is limited, thereby ensuring that when the float valve 200 floats up, it will block the water inlet 120.
[0067] Specifically, the bottom of the fixing rod 310 is set inside the housing 100 by a bracket. The bracket is formed by welding several iron rods and has holes for water supply to ensure that the water supplied by the inlet 120 enters the pipe and the water in the pipe can also enter the delivery space 110 through the bracket.
[0068] like Figure 3 As shown, specifically,
[0069] The float valve 200 has a through hole 220, which is connected to the movable cavity 210. The size of the through hole 220 is adapted to the size of the fixed rod 310.
[0070] The through hole 220 ensures that the float valve 200 moves along the fixed rod 310;
[0071] It should be noted that the through hole 220 is located at the bottom of the float valve 200 and is used in conjunction with the fixing rod 310. The fixing rod 310 blocks the through hole 220, thereby reducing the water flow into the float valve 200 and ensuring the normal floating of the float valve 200.
[0072] like Figure 3 As shown, in one embodiment,
[0073] The dimensions of the limiting plate 320 are adapted to the dimensions of the movable cavity 210, and the dimensions of the limiting plate 320 are larger than the dimensions of the through hole 220.
[0074] In this embodiment, the size of the limiting plate 320 is larger than the size of the through hole 220 to ensure that the limiting plate 320 is actually located in the movable cavity 210 and to prevent the float valve 200 from falling off the fixed rod 310.
[0075] like Figure 1 As shown, in one embodiment, it further includes:
[0076] The cover 500 is detachably mounted on the housing 100.
[0077] In this embodiment, the cover 500 is detachable to facilitate the opening and closing of the housing 100, thereby facilitating the maintenance of the float valve 200 inside the housing 100.
[0078] like Figure 1 As shown, in one embodiment, it further includes:
[0079] Water inlet pipe 600 is connected to water inlet 120.
[0080] In this embodiment, the inlet 120 is connected to the inlet pipe 600, so that external water can enter the pipe 400 through the inlet 120.
[0081] The functions of each module in each device of this utility model embodiment can be found in the corresponding description in the above method, and will not be repeated here.
[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0084] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A water inlet automatic check valve suitable for use in a pipe, characterized in that, The utility model relates to an automatic check valve for water inlet, which comprises: a shell arranged on a pipeline, the shell having a conveying space inside, the conveying space being communicated with a water conveying cavity of the pipeline, and the shell further having a water inlet; a float valve having a first state and a second state, the float valve being located at a bottom end of the conveying space when the float valve is in the first state, and the float valve being located at a top of the conveying space when the float valve is in the second state, and the float valve being in contact with the water inlet; a limiting member arranged on the shell, the limiting member being located in the conveying space, and the float valve being arranged on the limiting member.
2. The automatic check valve for water inlet according to claim 1, wherein an area of a top view of the float valve is smaller than an area of a top view of the conveying space.
3. The automatic check valve for water inlet according to claim 1, wherein when the float valve is in the second state, the float valve blocks the water inlet.
4. The automatic check valve for water inlet according to claim 1, wherein an area of a front view of the float valve is equal to an area of a front view of the conveying space.
5. The automatic check valve for water inlet according to claim 1, wherein the float valve has a movable cavity adapted to the limiting member, and an end of the limiting member away from the pipeline is located in the movable cavity.
6. The automatic check valve for water inlet according to claim 5, wherein the limiting member comprises: a fixed rod arranged in the shell, an end of the fixed rod away from the shell being located in the movable cavity; a limiting plate located in the movable cavity, the limiting plate being arranged on the end of the fixed rod away from the shell.
7. The automatic check valve for water inlet according to claim 6, wherein the float valve has a through hole communicated with the movable cavity, and a size of the through hole is adapted to a size of the fixed rod.
8. The automatic check valve for water inlet according to claim 7, wherein a size of the limiting plate is adapted to a size of the movable cavity, and the size of the limiting plate is greater than the size of the through hole.
9. The automatic non-return inlet valve according to claim 1, characterized in that The utility model further comprises: a cover detachably arranged on the shell.
10. The automatic non-return inlet valve according to claim 1, characterized in that The utility model further comprises: a water inlet pipe communicated with the water inlet.