Check valve for riverbed

Abstract

The utility model discloses a check valve for a riverbed, and belongs to the technical field of valves. The check valve for the riverbed comprises a valve body assembly and a sealing assembly, the valve body assembly is provided with a liquid inlet flow channel and a liquid outlet flow channel, a sealing face is further arranged in the valve body assembly, and the sealing face is located between the liquid inlet flow channel and the liquid outlet flow channel; the sealing assembly comprises a sealing ball and a sealing piece wrapping the sealing ball, and the sealing assembly is movably arranged in the valve body assembly and can be attached to or away from the sealing face so as to cut off or communicate a channel between the liquid inlet flow channel and the liquid outlet flow channel. The check valve for the riverbed is simple in structure, low in use cost, high in automation degree and capable of effectively meeting the dual requirements of low water supplementing and wet water backflow prevention in the riverbed environment; the sealing ball is coated with the sealing piece, so that a good sealing effect between the sealing assembly and the sealing surface can be ensured, and water in a river or a pond is prevented from permeating into an underground pipeline from a gap between the sealing assembly and the sealing surface when the sealing assembly is closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve technical field, concretely relates to a check valve for riverbed. BACKGROUND

[0002] The water level of rivers, ponds and other water bodies changes frequently due to seasonal rainfall, upstream water and other factors, and during dry season, the water level often drops, causing ecological imbalance, while during wet season, the backflow of water flow may cause waterlogging or water quality deterioration. Traditional control methods (such as water pump pumping and gate opening and closing) often have high energy consumption and slow response.

[0003] Therefore, there is an urgent need for a check valve for riverbed to solve the above problems. SUMMARY

[0004] The utility model aims at solving or at least alleviating part or all of the above problems. To this end, the utility model aims at providing a check valve for riverbed, which has simple structure, low use cost and high automation, and can effectively solve the dual needs of dry water replenishment and wet water backflow prevention in riverbed environment.

[0005] To achieve the above goal, the utility model adopts the following technical solutions:

[0006] A check valve for riverbed comprises:

[0007] A valve body assembly has a liquid inlet flow channel and a liquid outlet flow channel, and a sealing surface is further provided in the valve body assembly, which is located between the liquid inlet flow channel and the liquid outlet flow channel;

[0008] A sealing assembly comprises a sealing ball and a sealing member coated outside the sealing ball, which is movably arranged in the valve body assembly and can be attached to or away from the sealing surface to cut off or connect the passage between the liquid inlet flow channel and the liquid outlet flow channel.

[0009] As a preferred scheme of the check valve for riverbed provided by the utility model, the sealing surface is an arc surface.

[0010] As a preferred scheme of the check valve for riverbed provided by the utility model, the radius R1 of the virtual circle where the sealing surface is located is greater than or equal to 1.5R; where R is the radius of the sealing ball.

[0011] As a preferred scheme of the check valve for riverbed provided by the utility model, the sealing surface is a conical surface.

[0012] As a preferred scheme of the check valve for riverbed provided by the utility model, the sealing member is made of rubber material.

[0013] As a preferred scheme of the riverbed check valve provided by the utility model, the sealing member is coated on the sealing ball by vulcanization process.

[0014] As a preferred scheme of the riverbed check valve provided by the utility model, the valve body assembly comprises a valve main body and a valve shell connected above the valve main body, and the two form the liquid inlet flow channel and the liquid outlet flow channel, and the sealing surface is arranged in the valve main body; the bottom of the valve main body is provided with a liquid inlet opening in communication with the liquid inlet flow channel, the top of the valve shell is provided with a liquid outlet opening in communication with the liquid outlet flow channel, and the sealing assembly is movably arranged in the valve shell.

[0015] As a preferred scheme of the riverbed check valve provided by the utility model, the sealing ball is made of metal material.

[0016] As a preferred scheme of the riverbed check valve provided by the utility model, the sealing ball is a hollow ball structure.

[0017] As a preferred scheme of the riverbed check valve provided by the utility model, the number of the liquid outlet openings is multiple, and the multiple liquid outlet openings are arranged in an array on the valve shell.

[0018] The riverbed check valve has the advantages that:

[0019] The riverbed check valve provided by the utility model is applied to rivers, ponds and other water bodies, when the riverbed water level is lower than the underground pipeline water level, the water in the underground pipeline can push the sealing assembly to open under the action of the water flow pressure difference, so as to supplement water to the rivers and ponds, when the riverbed water level is higher than the underground pipeline water level, the sealing assembly is closed due to gravity, so as to prevent water flow from flowing back, thereby achieving the purpose of supplementing water to rivers, ponds and other water bodies when they are dry, and avoiding the backflow of water in rivers, ponds and other water bodies when they are wet; the sealing member is coated on the sealing ball, so that the sealing assembly and the sealing surface have good sealing effect, thereby preventing water in rivers and ponds from seeping into the underground pipeline through the gap between the sealing assembly and the sealing surface when the sealing assembly is closed. The riverbed check valve has the advantages of simple structure, low use cost and high automation, and can effectively solve the dual needs of dry water supplement and wet water backflow prevention in the riverbed environment. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings by those skilled in the art without creating labor.

[0021] Figure 1 is a sectional structure view of the check valve for riverbed provided by the embodiment of the utility model.

[0022] Reference signs:

[0023] 100, valve body assembly;1001, inlet flow channel;1002, outlet flow channel;110, valve main body;111, inlet port;112, sealing surface;120, valve shell;121, outlet port;

[0024] 200, sealing assembly;210, sealing ball;220, sealing member;

[0025] 300, fastener. DETAILED DESCRIPTION

[0026] Before any embodiments of the utility model are explained in detail, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described drawings.

[0027] In the utility model, the terms "comprising", "containing", "having" or any other variants thereof are intended to cover non-exclusive containing, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0028] In the utility model, the term "and / or" is a description of the association relationship of the associated object, which means that there can be three kinds of relationships. For example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the utility model generally indicates that the front and rear associated objects are in a "and / or" relationship.

[0029] In the utility model, the terms "connection", "combination", "coupling" and "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, the direct connection means that two parts or components are connected together without setting intermediate parts, and the indirect connection means that two parts or components are connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0030] In the present utility model, the person skilled in the art will understand that the relative terms (for example, "about", "approximately", "substantially" and the like) used in connection with a quantity or condition are intended to include the stated value and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with a measurement of a particular value, the tolerance caused by manufacturing, assembly, use, and the like associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. The relative terms can refer to a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value plus or minus. The numerical values not using the relative terms should also be disclosed as the specific values with tolerances. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) plus or minus on the basis of the indicated angle.

[0031] In the present utility model, the person skilled in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0032] In the present utility model, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present utility model. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the lateral direction. For example, the lower side can include the lower side, the lower left side, the lower right side, the front lower side and the back lower side, etc.

[0033] Figure 1 A sectional structure diagram of the check valve for riverbed provided by the embodiment is shown. As shown in the figure, Figure 1 The check valve for riverbed provided by the embodiment includes a valve body assembly 100 and a sealing assembly 200. The valve body assembly 100 has a liquid inlet flow channel 1001 and a liquid outlet flow channel 1002, and a sealing surface 112 is further arranged in the valve body assembly 100. The sealing surface 112 is located between the liquid inlet flow channel 1001 and the liquid outlet flow channel 1002. The sealing assembly 200 includes a sealing ball 210 and a sealing member 220 coated outside the sealing ball 210. The sealing assembly 200 is movably arranged in the valve body assembly 100 and can be attached to or away from the sealing surface 112 to cut off or connect the passage between the liquid inlet flow channel 1001 and the liquid outlet flow channel 1002.

[0034] The riverbed check valve provided by the embodiment is applied to water bodies such as rivers and ponds. When the water level of the riverbed is lower than the water level of the underground pipeline, the water in the underground pipeline can push the sealing assembly 200 to open under the action of the water pressure difference, thereby supplementing water to the rivers and ponds. When the water level of the riverbed is higher than the water level of the underground pipeline, the sealing assembly 200 is closed due to gravity to prevent water from flowing backward, thereby achieving the purpose of supplementing water to the rivers and ponds when the water bodies such as rivers and ponds are dry, and preventing water in the rivers and ponds from flowing backward when the rivers and ponds are in flood. By coating the sealing member 220 on the sealing ball 210, a good sealing effect between the sealing assembly 200 and the sealing surface 112 can be ensured, thereby preventing water in the rivers and ponds from seeping into the underground pipeline through the gap between the sealing assembly 200 and the sealing surface 112 when the sealing assembly 200 is closed. The riverbed check valve has the advantages of simple structure, low use cost, and high automation, and can effectively solve the dual needs of dry water supplementing and flood prevention in the riverbed environment.

[0035] Optionally, the sealing member 220 is made of rubber material, which has good sealing effect, is convenient to obtain, and has low cost. In the embodiment, the sealing member 220 is coated on the sealing ball 210 by vulcanization process, so that the sealing member 220 is firmly fixed on the surface of the sealing ball 210, and displacement of the sealing ball 210 relative to the sealing member 220 in the use process is avoided, so that the part of the sealing member 220 in contact with the sealing surface 112 is affected by the lack of pressure applied by the sealing ball 210, thereby affecting the sealing effect between the two.

[0036] In some embodiments, the sealing surface 112 is an arc surface, which can increase the sealing area between the sealing surface 112 and the sealing assembly 200, thereby ensuring the sealing effect between the two. Optionally, the radius R1 of the virtual circle on which the sealing surface 112 is located is greater than or equal to 1.5R, where R is the radius of the sealing ball 210. Through simulation and test verification, the sealing surface 112 with the above size range can better fit the sealing assembly 200, thereby further ensuring the sealing effect between the two. For example, R1 can be 1.6R, 1.7R, 1.8R, 1.9R, 2.0R, etc. Of course, the specific value of the radius R1 of the sealing surface 112 is not limited in the embodiment, and the designer can adjust the specific value of R1 according to the actual processing needs.

[0037] In other embodiments, the sealing surface 112 can also be a conical surface. Since the sealing member 220 can be elastically deformed, the sealing assembly 200 can be sealed at a position with a smaller hole diameter of the sealing port surrounded by the sealing surface 112, so that the two form an interference fit, thereby ensuring the sealing effect between the sealing assembly 200 and the sealing surface 112.

[0038] As Figure 1As shown, the valve body assembly 100 comprises a valve body 110 and a valve shell 120 connected above the valve body 110, and both of them surround to form the above-mentioned liquid inlet flow channel 1001 and liquid outlet flow channel 1002, and the sealing surface 112 is arranged in the valve body 110; the bottom of the valve body 110 is provided with a liquid inlet 111 in communication with the liquid inlet flow channel 1001, and the top of the valve shell 120 is provided with a liquid outlet 121 in communication with the liquid outlet flow channel 1002; the sealing assembly 200 is movably arranged in the valve shell 120. By arranging the valve body assembly 100 as the valve body 110 and the valve shell 120 in a split manner, the assembly between the valve body assembly 100 and the sealing assembly 200 can be facilitated.

[0039] Optionally, the sealing ball 210 is made of metal material, which has a large specific gravity and can be well attached to the sealing surface 112 under the action of its own gravity, so as to ensure the sealing effect of the sealing assembly 200 at the sealing position, and the sealing assembly 200 can be sealed and attached to the sealing surface 112 under the action of its own gravity, and the arrangement of a pressing member such as a spring can be omitted, thereby simplifying the structure of the riverbed check valve and reducing the processing cost to a certain extent. In the present embodiment, the specific gravity of the sealing ball 210 is about 1.2 kg / m 3 .

[0040] Optionally, the sealing ball 210 is a hollow ball structure, which can reduce the material of the sealing ball 210 while ensuring good sealing and attachment between the sealing assembly 200 and the sealing surface 112, thereby reducing the material cost.

[0041] Optionally, the number of liquid outlets 121 is multiple, and the multiple liquid outlets 121 are arranged in an array on the valve shell 120, so as to ensure that the river, pond, etc. can be timely replenished, and at the same time, the sealing assembly 200 can be prevented from being partially extended out of the valve shell 120 due to the excessively large liquid outlet 121, thereby affecting the sealing effect between the sealing assembly 200 and the sealing surface 112.

[0042] It should be explained that the arrangement of the multiple liquid outlets 121 on the valve shell 120 can also make the valve shell 120 have a filtering function, so as to prevent impurities in the river, pond, etc. from flowing into the valve body 110 through the liquid outlet 121, and flowing into the underground water pipeline when the sealing assembly 200 is away from the sealing surface 112, or adhering to the sealing surface 112, thereby affecting the sealing effect between the sealing assembly 200 and the sealing surface 112. Of course, in other embodiments, a filtering member can also be arranged in the valve shell 120, which can also achieve the above-mentioned effect.

[0043] As shown in the following Figure 1 , the valve shell 120 is connected with the valve body 110 through a fastener 300. The fastener 300 is a bolt and nut assembly, which has the advantages of convenient disassembly and assembly and stable connection.

[0044] The working principle of the riverbed check valve is briefly described as follows: Figure 1 The working principle of the riverbed check valve is briefly described as follows:

[0045] 1) When the riverbed water level is lower than the underground pipeline water level, the water in the underground pipeline can push the sealing assembly 200 to open under the action of water flow pressure difference, thereby supplementing water to the river and pond;

[0046] 2) When the riverbed water level is higher than the underground pipeline water level, the sealing assembly 200 is closed due to gravity to prevent water flow from flowing backward.

[0047] It should be noted that, Figure 1 The arrow direction in the riverbed check valve is the flow direction of the water flow in the riverbed check valve, and the arrow direction is the vertical direction (up and down direction) when the riverbed check valve is actually installed, and the valve shell 120 is located above the valve body 110, so that the sealing assembly 200 can be in contact with the sealing surface 112 under the action of its own gravity when it does not need to supplement water.

[0048] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above examples do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A check valve for use in a riverbed, characterized by, The utility model relates to a valve body assembly (100) and a sealing assembly (200), and the valve body assembly (100) has a liquid inlet channel (1001) and a liquid outlet channel (1002), and a sealing surface (112) is arranged between the liquid inlet channel (1001) and the liquid outlet channel (1002) in the valve body assembly (100). The sealing assembly (200) comprises a sealing ball (210) and a sealing member (220) coated on the sealing ball (210), and the sealing assembly (200) is movably arranged in the valve body assembly (100) and can be attached to or away from the sealing surface (112) to cut off or connect the passage between the liquid inlet channel (1001) and the liquid outlet channel (1002). The sealing surface (112) is an arc surface.

2. The riverbed check valve of claim 1, wherein The radius R1 of the virtual circle where the sealing surface (112) is located is greater than or equal to 1.5 times the radius R of the sealing ball (210).

3. The riverbed check valve of claim 2, wherein, The sealing surface (112) is a conical surface.

4. The riverbed check valve of claim 1, wherein, The sealing member (220) is made of rubber.

5. The riverbed check valve of claim 1, wherein, The sealing member (220) is coated on the sealing ball (210) by vulcanization.

6. The riverbed check valve of claim 5, wherein, The valve body assembly (100) comprises a valve body (110) and a valve shell (120) connected above the valve body (110), and the valve body (110) and the valve shell (120) surround to form the liquid inlet channel (1001) and the liquid outlet channel (1002), and the sealing surface (112) is arranged in the valve body (110); the bottom of the valve body (110) is provided with a liquid inlet (111) connected with the liquid inlet channel (1001), the top of the valve shell (120) is provided with a liquid outlet (121) connected with the liquid outlet channel (1002), and the sealing assembly (200) is movably arranged in the valve shell (120).

7. The riverbed check valve according to any one of claims 1 to 6, characterized in that The sealing ball (210) is made of metal.

8. The riverbed check valve of claim 7, wherein, The sealing ball (210) is a hollow ball structure.

9. The riverbed check valve of claim 7, wherein, The number of the liquid outlets (121) is multiple, and the multiple liquid outlets (121) are arranged in an array on the valve shell (120).

10. The riverbed check valve of claim 7, wherein, ​

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