Sealing structure of check valve

Abstract

The utility model discloses a sealing structure of a check valve, which belongs to the technical field of valves, and comprises a valve body, the top of the valve body is fixedly connected with a valve cover, the top of the valve cover is provided with a lifting bolt, two sides of the valve body are provided with connecting mechanisms, the two connecting mechanisms are internally provided with inlets and outlets, and the inlets and the outlets are communicated with the valve cover. And a sealing mechanism is mounted on one side of each of the two connecting mechanisms. According to the check valve, through the connecting mechanism and the sealing mechanism, in the using process of the check valve, the sealing ring can be positioned and fixed through the sealing mechanism, so that the check valve cannot fall off in the using process, and meanwhile leakage can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a sealing structure for a check valve. Background Technology

[0002] A check valve is a common fluid control device widely used in piping systems to prevent fluid backflow. Its main function is to ensure unidirectional fluid flow, preventing damage to equipment and pipelines caused by backflow. The sealing structure design of a check valve plays a crucial role in its performance. With the development of industrial technology, the sealing materials and structures of check valves are constantly being optimized to improve their pressure resistance, corrosion resistance, and sealing performance, ensuring reliable operation of the valve under harsh conditions such as high pressure and high temperature.

[0003] Check valves are ubiquitous in daily use. The existing sealing structure of check valves relies on the sealing ring, which requires precise alignment during use. This makes the check valve difficult to install, and the sealing ring is prone to falling off during use, thus greatly reducing the effectiveness of the sealing structure.

[0004] Therefore, there is an urgent need to provide a sealing structure for a check valve to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a sealing structure for a check valve.

[0006] To solve the above-mentioned technical problems, the present invention provides a sealing structure for a check valve, including a valve body, a valve cover fixedly connected to the top of the valve body, and a lifting eye screw installed on the top of the valve cover.

[0007] The valve body is equipped with connecting mechanisms on both sides, and each of the two connecting mechanisms has an inlet and an outlet. A sealing mechanism is installed on one side of each of the two connecting mechanisms.

[0008] The present invention is further configured such that: the connecting mechanism includes connecting bodies fixedly connected to both sides of the valve body, each of the two connecting bodies has a protruding block on one side, each of the two connecting bodies has a fixing area on the other side, each of the two connecting bodies has a plurality of fixing holes on the other side surface, and the plurality of fixing holes form a ring, the protruding blocks are higher than the fixing areas and are all located on the connecting bodies, and the plurality of fixing holes surround the corresponding inlet and outlet periphery.

[0009] With the above technical solution, when the application area of ​​the check valve is determined, the connecting mechanism can be used to make the check valve fit into the specific installation area and to ensure smooth use in subsequent sealing operations. Specifically, one side of the connector is welded and fixed so that the protrusion is installed on it. Then, the other side of the connector is cut off, and a fixing area is opened on the other side of the connector, so that the two sides of the connector are of different heights, so that the sealing operation can be performed smoothly when connecting and using it.

[0010] The present invention is further configured such that: the sealing mechanism includes a support ring fixedly connected to the top of the corresponding fixing area and embedded in the surface; a first sleeve ring is rotatably connected to the outer wall of the support ring; a rotating gear is fixedly connected to the outer wall of the first sleeve ring; a connecting rod is fixedly connected to the outer wall of the first sleeve ring; a second sleeve ring is fixedly connected to the other end of the connecting rod; a sealing sheet is fixedly connected to the inner side of the outer wall of the support ring; the sealing sheet corresponds to multiple fixing holes and inlets / outlets; the sealing mechanisms on the same support ring are cross-symmetrical; multiple second sleeve rings and connecting rods are provided and are cross-connected; and multiple connecting rods are curved.

[0011] With the above technical solution, after the connecting mechanism is opened, the sealing mechanism can be used to align the positions of the inlet and outlet and the fixing hole, so as not to damage the sealing material during fixing, and to quickly determine the position of the required sealing material, thereby saving installation time and improving the sealing effect, so that the check valve will not leak during use. Specifically, the support ring is installed in the fixing area on the other side of the connecting body, so that it will not be too abrupt during use. Then, the connecting body on the check valve is connected to the one to be connected. At the same time, the operator can rotate the gear, thereby driving the first ring to rotate. Under the connection of multiple connecting rods, the corresponding second ring will be driven to rotate. Due to the special bending state of the connecting rod, during the rotation, the bent part will be fixed to the protrusion on the connecting body, thus ensuring the position is corresponding. Then, the corresponding opposite rotation is performed, so that multiple connecting rods are suspended at the connection point. Therefore, the sealing plate will be clamped in the middle position.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By designing a connecting mechanism and a sealing mechanism, this utility model allows the sealing ring to be positioned and fixed during the use of the check valve, preventing the check valve from falling off and avoiding leakage.

[0014] 2. This utility model, through the design of a sealing mechanism, can fix the check valve in use through a specific structure, and then the position of the sealing ring can be quickly adjusted, saving time. Attached Figure Description

[0015] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0016] Figure 2 This is the front view of the present invention;

[0017] Figure 3 This is a structural schematic diagram of the present invention from a second perspective;

[0018] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0019] In the diagram: 1. Valve body; 2. Valve cover; 3. Connecting mechanism; 301. Connector; 302. Protrusion; 303. Fixing area; 304. Fixing hole; 4. Inlet and outlet; 5. Sealing mechanism; 501. Support ring; 502. First ring; 503. Rotating gear; 504. Connecting rod; 505. Second ring; 506. Sealing plate. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] Please see Figures 1-4 A sealing structure for a check valve includes a valve body 1, a valve cover 2 fixedly connected to the top of the valve body 1, and a lifting eye screw installed on the top of the valve cover 2. Connecting mechanisms 3 are installed on both sides of the valve body 1. Each connecting mechanism 3 includes connecting bodies 301 fixedly connected to both sides of the valve body 1. Each connecting body 301 has a protruding block 302 on one side and a fixing area 303 on the other side. Multiple fixing holes 304 are provided on the surface of the other side of each connecting body 301, forming a ring. The protruding blocks 302 are higher than the fixing areas 303 and are all located on the connecting bodies 301. The fixed hole 304 surrounds the corresponding inlet and outlet 4. When in use, after the area where the check valve is used is determined, the connecting mechanism 3 can be used to make the check valve install in a specific area and to make it easy to use in subsequent sealing operations. Specifically, one side of the connecting body 301 is welded and fixed so that the protrusion 302 is installed on it. Then the other side of the connecting body 301 is cut off, and a fixing area 303 is opened on the other side of the connecting body 301, so that the two sides of the connecting body 301 are of different heights, so that the sealing operation can be performed smoothly when connecting and using it.

[0022] like Figures 3-4As shown, both connecting mechanisms 3 have inlets and outlets 4 inside. A sealing mechanism 5 is installed on one side of each connecting mechanism 3. The sealing mechanism 5 includes a support ring 501 fixedly connected to the top of the corresponding fixing area 303 and embedded in the surface. A first ring 502 is rotatably connected to the outer wall of the support ring 501. A rotating gear 503 is fixedly connected to the outer wall of the first ring 502. A connecting rod 504 is fixedly connected to the outer wall of the first ring 502. A second ring 505 is fixedly connected to the other end of the connecting rod 504. A sealing plate 506 is fixedly connected to the inner side of the outer wall of the support ring 501, and the sealing plate 506 corresponds to multiple fixing holes 304 and inlets and outlets 4. The sealing mechanisms 5 on the same support ring 501 are symmetrically arranged. Multiple second rings 505 and connecting rods 504 are provided and are all cross-connected. The multiple connecting rods 504 are curved. After the connecting mechanism 3 is opened, the sealing mechanism 5 can be used to align the positions of the inlets and outlets 4 and the fixing holes 304, making it easier to avoid misalignment during fixing. Damaging the sealing material allows for quick identification of the required sealing material location, saving installation time and improving sealing performance, preventing leakage during check valve use. Specifically, the support ring 501 is installed on the fixing area 303 on the other side of the connector 301, avoiding any abrupt appearance during use. Then, the connector 301 on the check valve is aligned with the required connection. Simultaneously, the operator can rotate the gear 503, causing the first ring 502 to rotate. With the connection of multiple connecting rods 504, the corresponding second ring 505 will rotate. Due to the special bending state of the connecting rods 504, during rotation, the bent part will be fixed to the protrusion 302 on the connector 301, ensuring the corresponding position. Then, the corresponding rotation is reversed, causing multiple connecting rods 504 to suspend at the connection point. Therefore, the sealing plate 506 will be clamped in the middle position.

[0023] When using this invention, once the application area of ​​the check valve is determined, the connecting mechanism 3 can be used to ensure the check valve is installed in the designated area, facilitating subsequent sealing operations. Specifically, one side of the connecting body 301 is welded and fixed, with the protrusion 302 mounted on top. Then, the other side of the connecting body 301 is cut off, creating a fixing area 303 on that side. The support ring 501 is then installed in this fixing area 303, preventing any abrupt changes during use. The check valve is then... The valve connector 301 mates with the part to be connected. At the same time, the operator can rotate the gear 503, which in turn drives the first ring 502 to rotate. With the connection of multiple connecting rods 504, the corresponding second ring 505 will rotate. Due to the special bending state of the connecting rods 504, during the rotation, the bent part will be fixed to the protrusion 302 on the connector 301, thus ensuring the position is corresponding. Then, the corresponding parts are rotated in the opposite direction, so that the multiple connecting rods 504 are suspended at the connection point. Therefore, the sealing plate 506 will be clamped in the middle position.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sealing structure of a check valve comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected with a valve cover (2), and a lifting ring screw is installed on the top of the valve cover (2); Both sides of the valve body (1) are provided with connecting mechanisms (3), both of which are internally provided with inlets and outlets (4), and one side of each of the connecting mechanisms (3) is provided with a sealing mechanism (5).

2. A seal structure for a check valve according to claim 1, wherein: The connecting mechanism (3) comprises connecting bodies (301) fixedly connected to both sides of the valve body (1), and each of the connecting bodies (301) is provided with a protruding block (302) on one side, a fixing area (303) is formed on the other side of each of the connecting bodies (301), a plurality of fixing holes (304) are formed on the surface of the other side of each of the connecting bodies (301), and the plurality of fixing holes (304) are annularly arranged.

3. A seal structure for a check valve according to claim 2, wherein: The protruding block (302) is higher than the fixing area (303) and is located on the connecting body (301).

4. The seal structure of a check valve according to claim 2, wherein: The plurality of fixing holes (304) are annularly arranged around the corresponding inlet and outlet (4).

5. The seal structure of a check valve according to claim 2, wherein: The sealing mechanism (5) comprises a support ring (501) fixedly connected to the top of the corresponding fixing area (303) and embedded on the surface, a first ring (502) rotatably connected to the outer wall of the support ring (501), a rotating gear (503) fixedly connected to the outer wall of the first ring (502), a connecting rod (504) fixedly connected to the outer wall of the first ring (502), a second ring (505) fixedly connected to the other end of the connecting rod (504), a sealing piece (506) fixedly connected to the inner side of the outer wall of the support ring (501), and the sealing piece (506) corresponds to the plurality of fixing holes (304) and the inlet and outlet (4).

6. A seal structure for a check valve according to claim 5, wherein: The sealing mechanisms (5) on the same support ring (501) are cross-symmetrical.

7. A seal structure for a check valve according to claim 5, wherein: The second ring (505) and the connecting rod (504) are provided with a plurality of cross-connections, and the plurality of connecting rods (504) are curved.

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