Integrated rubber clack check valve

Abstract

The utility model discloses an integrated rubber clack check valve, and belongs to the technical field of valves. The check valve comprises a valve body, the valve body comprises an integrated valve body shell, a first valve cavity and a second valve cavity which are communicated through a communication port are formed in the valve body shell, and a valve clack is movably arranged on the communication port; the valve clack enables the first valve cavity and the second valve cavity to be communicated or not communicated; the first valve cavity communicates with the outside through a first opening, and the second valve cavity communicates with the outside through a second opening. The shortest diameter of the sealing part of the valve clack is smaller than the diameter of the first port or the second port; a sealing protrusion protruding outwards is arranged on one side face of the sealing part in the perimeter direction. According to the integrated rubber clack check valve provided by the utility model, the valve body is integrally designed, and a valve cover is omitted, so that the whole valve body becomes a whole, the problems that the valve body and the valve cover of a split check valve are easy to loosen and leak are solved, and the check valve can work for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an integrated rubber flap check valve. Background Art

[0002] A check valve is a valve that automatically opens and closes its flapper based on the flow of the medium itself, preventing backflow of the medium. It is also known as a one-way valve, reverse flow valve, or back-pressure valve. A check valve is an automatic valve whose primary functions are to prevent backflow of the medium, reverse rotation of the pump and drive motor, and release of the medium from the container.

[0003] The rubber flap check valve is a commonly used valve, which is mainly used to prevent the backflow of fluid in the pipeline and cause damage to the equipment. The rubber flap check valve includes a valve body and a rubber-coated valve disc located in the valve body.

[0004] Existing rubber-flap check valves typically consist of a valve body and a bonnet, connected by bolts and sealed with rubber. These valves present the following challenges: 1. After prolonged operation, the connecting bolts can easily loosen, causing the rubber gasket to age and the bolts to rust, leading to leakage. 2. Quality issues with the rubber gasket can lead to a loose seal between the bonnet and body, resulting in leakage. 3. Water hammer can cause leakage between the bonnet and body under high-pressure conditions.

[0005] For example, Chinese patent document CN213145475U discloses a leak-proof check valve flap structure and a leak-proof check valve. The flap includes a flap body with a portion for rotational connection and a through-slot extending through the front and back sides of the flap body. The flap body has rubber on the front and back sides, both of which are adhered to the flap body, and the front and back rubbers are connected by the through-slot. This application has a valve cover and valve body, which is prone to the above-mentioned problems. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model

[0007] In view of the problem in the prior art that the connection between the valve body and the valve cover of the existing rubber flap check valve is prone to poor sealing, the utility model provides an integrated rubber flap check valve to solve the above problem.

[0008] 2. Technical solution

[0009] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0010] The utility model discloses an integrated rubber flap check valve, comprising a valve body, wherein the valve body comprises an integrated valve body shell, wherein a first valve cavity and a second valve cavity connected via a communicating port are formed in the valve body shell, and a valve flap is movably provided on the communicating port; the valve flap enables the first valve cavity and the second valve cavity to be connected or disconnected; the first valve cavity is connected to the outside world via the first port, and the second valve cavity is connected to the outside world via the second port; and the shortest diameter of the sealing portion of the valve flap is smaller than the diameter of the first port or the second port.

[0011] As a further improvement of the present invention, the valve flap further comprises a mounting portion, a connecting hole is provided on the mounting portion, a fixing pin is provided in the connecting hole, and the fixing pin mounts the valve flap on the valve body.

[0012] As a further improvement of the present invention, a mounting chamber is provided on the valve body, the mounting chamber is communicated with the interior of the valve body, and the mounting portion is arranged in the mounting chamber via a fixing pin.

[0013] As a further improvement of the present invention, the installation bin includes an installation bin shell, and the installation bin shell is integrally formed with the valve body shell; a mounting hole for inserting a fixing pin is provided on the installation bin shell.

[0014] As a further improvement of the present invention, the mounting portion is connected to the sealing portion via a connecting plate, and the sealing portion is in an oblong or elliptical shape.

[0015] As a further improvement of the present invention, a sealing protrusion protruding outward is provided on one side of the sealing portion along the circumference direction; and an anti-collision pad is provided on the other side of the sealing portion.

[0016] As a further improvement of the present invention, a sealing surface is provided at the junction of the first valve cavity and the second valve cavity. When the valve disc disconnects the first valve cavity and the second valve cavity, the sealing protrusion presses on the sealing surface.

[0017] As a further improvement of the present invention, the shape of the communication port between the first valve cavity and the second valve cavity is the same as the shape of the sealing portion, and the area of ​​the sealing portion is larger than the area of ​​the communication port.

[0018] As a further improvement of the present invention, the first port is an inlet, the second port is an outlet, and the valve flap is located in the second valve cavity.

[0019] As a further improvement of the present invention, mounting flanges are respectively provided at both ends of the valve body.

[0020] 3. Beneficial effects

[0021] Compared with the existing known technologies, the technical solution provided by this utility model has the following significant effects:

[0022] (1) The utility model provides an integrated rubber flap check valve, the valve body of which is an integrated design, and the valve cover is eliminated, so that the valve body becomes a whole, thereby avoiding the problem of easy loosening and leakage between the valve body and the valve cover that is easy to occur in a split check valve, and allowing the check valve to work for a long time.

[0023] (2) The utility model provides an integrated rubber disc check valve. Since the valve body is designed as a whole, the valve disc cannot be installed from the original valve cover. The utility model designs the valve disc into an oblong or elliptical shape, and its short diameter is smaller than the diameter of the inlet and outlet of the check valve, so that the valve disc can be placed into the check valve from the inlet and outlet, and then the valve disc is connected to the valve body using a fixing pin. The valve disc can be installed and disassembled without opening the check valve, which facilitates the assembly and maintenance of the check valve.

[0024] (3) The utility model provides an integrated rubber disc check valve, in which an outwardly protruding mounting chamber is provided on the valve body, the mounting chamber being connected to the valve cavity. After the valve disc is placed in the valve cavity, its mounting portion is set in the mounting chamber, and a mounting hole is provided on the mounting chamber. The valve disc is installed by inserting a fixing pin from the outside through the mounting hole into the connecting hole on the mounting portion. When disassembling, the valve disc can be removed by simply pulling out the fixing pin, which is convenient for disassembly and assembly.

[0025] (4) The utility model provides an integrated rubber disc check valve, which has a structural design for the valve disc. A sealing protrusion protruding outward along the circumference of one side of the sealing portion is provided. When the valve disc disconnects the two chambers, the sealing protrusion presses against the sealing surface, further improving the sealing effect and preventing the fluid from flowing in the reverse direction. The utility model also provides a flexible anti-collision pad on the other side of the sealing portion. When the valve disc is raised, the anti-collision pad can cushion the valve disc and the valve body to prevent damage caused by collision between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the check valve of the utility model;

[0027] Figure 2 This is an exploded diagram of the structure of the check valve of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the valve body in the utility model;

[0029] Figure 4 This is a schematic structural diagram of the valve disc in the utility model from a first perspective;

[0030] Figure 5 This is a schematic structural diagram of the valve disc in the utility model from a second perspective;

[0031] Figure 6It is a cross-sectional view of the check valve of the present utility model.

[0032] Description of the numbers in the schematic diagram:

[0033] 1. Valve body; 11. Valve body shell; 12. Mounting flange; 13. First port; 14. Second port; 15. First valve chamber; 16. Second valve chamber; 17. Sealing surface; 2. Mounting chamber; 21. Mounting chamber shell; 22. Mounting hole; 3. Fixing pin; 4. Valve disc; 41. Mounting part; 42. Connecting hole; 43. Connecting plate; 44. Sealing part; 45. Anti-collision pad; 46. Sealing protrusion. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more clearly understood, the specific embodiments of the utility model are described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0036] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0040] Example

[0041] Combine Figure 1-Figure 3 In this embodiment, an integrated rubber flap check valve includes a valve body 1. The valve body 1 is an integral body, including an integrally formed valve body shell 11. The space enclosed by the valve body shell 11 is a valve cavity. The check valve cover is eliminated in this embodiment, so that the valve body 1 is an integral body, avoiding the problem of easy loosening and leakage between the valve body 1 and the valve cover that is easy to occur in a split check valve, so that the check valve can work for a long time. In this embodiment, the valve cavity is divided into two parts, namely the first valve cavity 15 and the second valve cavity 16, and the two chambers are connected through a connecting port. In this embodiment, a movable valve flap 4 is provided at the connecting port. The shape of the connecting port of the first valve cavity 15 and the second valve cavity 16 is the same as the shape of the sealing portion 44. The area of ​​the sealing portion 44 is larger than the area of ​​the connecting port. The sealing portion 44 can completely cover the connecting port, thereby achieving an isolation effect.

[0042] In this embodiment, one end of the valve flap 4 is connected to the valve body housing 11. When fluid flows from the inlet to the outlet, the fluid pushes the sealing portion 44 in the valve flap 4 to rotate, thereby pushing the sealing portion 44 upward from the communication port. The valve flap 4 then leaves the communication port, connecting the first valve chamber 15 and the second valve chamber 16, and fluid flows from the first valve chamber 15 to the second valve chamber 16. When fluid no longer enters the inlet, the valve flap 4, under the action of gravity, covers the communication port, separating the first valve chamber 15 from the second valve chamber 16. When fluid attempts to flow from the outlet through the second valve chamber 16 to the first valve chamber 15, the valve flap 4 abuts against the sealing surface 17, sealing the communication port and preventing fluid from flowing back, thus achieving one-way fluid flow. Because the second valve chamber 16 is connected to the outlet, the valve flap 4 in this embodiment is disposed within the second valve chamber 16. In other embodiments, if the first valve chamber 15 is connected to the outlet, the valve flap 4 is disposed within the first valve chamber 15.

[0043] In this embodiment, the first valve chamber 15 is connected to the outside through the first port 13, and the second valve chamber 16 is connected to the outside through the second port 14; the first port 13 is a fluid inlet, and the second port 14 is a fluid outlet. Since the check valve cancels the valve cover design, the valve body shell 11 is integrally formed, resulting in the valve flap 4 cannot be installed through the original valve cover. In this embodiment, the sealing portion 44 of the valve flap 4 is designed to be oblong or elliptical, that is, it includes a long diameter and a short diameter, which can not only increase the area of ​​the valve flap 4 so that the area of ​​the connecting port is not too small, but also can design the length of the short diameter to be smaller than the diameter of the first port 13 or the second port 14, so that the valve flap 4 can be installed in the valve body 1 through the first port 13 or the second port 14.

[0044] Combine Figure 4 and Figure 5In this embodiment, the valve flap 4 includes a mounting portion 41, a connecting plate 43, and a sealing portion 44. The mounting portion 41 is connected to the sealing portion 44 via the connecting plate 43. The connecting plate 43 of this embodiment is disposed at the end of the sealing portion 44 in the long-diameter direction. After the valve flap 4 is inserted into the valve body 1, the valve flap 4 can be more conveniently fixed. On one side of the sealing portion 44, a sealing protrusion 46 protruding outward along the circumference is disposed. When the valve flap 4 disconnects the first valve chamber 15 and the second valve chamber 16, the sealing protrusion 46 presses on the sealing surface 17. When the fluid flows from the second valve chamber 16 to the first valve chamber 15, pressure is applied to the valve flap 4. As the sealing protrusion 46 presses on the sealing surface 17, the sealing protrusion 46 deforms under the action of the fluid, thereby acting as a sealing ring, preventing the fluid from passing through, and further preventing the fluid from flowing back. A flexible anti-collision pad 45 is provided on the other side of the sealing portion 44. When the valve flap 4 is lifted, the anti-collision pad 45 can cushion the valve flap 4 and the valve body 1, preventing damage caused by collision between the two. In this embodiment, a connecting hole 42 is provided on the mounting portion 41. A fixing pin 3 is provided in the connecting hole 42. The fixing pin 3 fixes the valve flap 4 to the valve body 1. In this embodiment, the connecting plate 43 is a flexible structure. When the fluid flows from the first valve chamber 15 to the second valve chamber 16, the connecting plate 43 deforms, and the sealing portion 44 lifts away from the connecting port, thereby connecting the first valve chamber 15 and the second valve chamber 16.

[0045] Combine Figure 6 In this embodiment, an upwardly protruding mounting chamber 2 is provided on the valve body 1. The mounting chamber 2 includes a mounting chamber shell 21. A chamber is formed inside the mounting chamber shell 21. The mounting chamber 2 is connected to the interior of the valve body 1, that is, the mounting chamber shell 21 is connected to the valve body shell 11. The two are formed as one piece and are connected to each other internally. The mounting portion 41 is set in the mounting chamber 2 through the fixing pin 3. In this embodiment, a connecting hole 42 is provided on the mounting portion 41, and a mounting hole 22 is provided on the mounting chamber shell 21. When the valve disc 4 is placed in the valve cavity 1, the mounting portion 41 is set in the mounting chamber 2, and the fixing pin 3 is inserted into the connecting hole 42 from the outside through the mounting hole 22 to achieve the installation of the valve disc 4. During disassembly, the valve disc 4 can be removed by simply pulling out the fixing pin 3, which is convenient for disassembly and assembly. In order to facilitate the installation of the check valve on the pipeline, mounting flanges 12 are respectively provided at both ends of the valve body 1 for connection with other pipelines.

[0046] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An integrated rubber flap check valve, characterized in that: The invention comprises a valve body (1), wherein the valve body (1) comprises an integral valve body shell (11), wherein a first valve chamber (15) and a second valve chamber (16) are formed in the valve body shell (11) and are connected via a connecting port, and a valve flap (4) is movably provided on the connecting port; the first valve chamber (15) is connected to the outside world via a first port (13), and the second valve chamber (16) is connected to the outside world via a second port (14); and the shortest diameter of the sealing portion (44) of the valve flap (4) is smaller than the diameter of the first port (13) or the second port (14).

2. The integrated rubber flap check valve according to claim 1, characterized in that: The valve flap (4) further includes a mounting portion (41), a connecting hole (42) is provided on the mounting portion (41), a fixing pin (3) is provided in the connecting hole (42), and the fixing pin (3) mounts the valve flap (4) on the valve body (1); the mounting portion (41) is connected to the sealing portion (44) via a connecting plate (43).

3. The integrated rubber flap check valve according to claim 2, characterized in that: The valve body (1) is provided with a mounting chamber (2), the mounting chamber (2) is communicated with the interior of the valve body (1), and the mounting portion (41) is arranged in the mounting chamber (2) via a fixing pin (3).

4. The integrated rubber flap check valve according to claim 3, characterized in that: The installation chamber (2) comprises an installation chamber shell (21), and the installation chamber shell (21) is integrally formed with the valve body shell (11); and an installation hole (22) for inserting a fixing pin (3) is provided on the installation chamber shell (21).

5. The integrated rubber flap check valve according to claim 1, characterized in that: The sealing portion (44) is in the shape of an oblong or an ellipse.

6. The integrated rubber flap check valve according to claim 1, characterized in that: A sealing protrusion (46) protruding outward is provided on one side of the sealing portion (44) along the circumferential direction; and an anti-collision pad (45) is provided on the other side of the sealing portion (44).

7. The integrated rubber flap check valve according to claim 6, characterized in that: A sealing surface (17) is provided at the junction of the first valve cavity (15) and the second valve cavity (16). When the valve flap (4) disconnects the first valve cavity (15) and the second valve cavity (16), the sealing protrusion (46) presses on the sealing surface (17).

8. The integrated rubber flap check valve according to claim 1, characterized in that: The shape of the communication openings of the first valve cavity (15) and the second valve cavity (16) is the same as the shape of the sealing portion (44), and the area of ​​the sealing portion (44) is larger than the area of ​​the communication openings.

9. An integrated rubber flap check valve according to any one of claims 1 to 8, characterized in that: The first port (13) is an inlet, the second port (14) is an outlet, and the valve flap (4) is located in the second valve cavity (16).

10. The integrated rubber flap check valve according to claim 1, characterized in that: Mounting flanges (12) are respectively provided at both ends of the valve body (1).

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