Double-valve-clack linkage type leakproof check valve

Abstract

The utility model discloses a double-valve-clack linkage type leakproof check valve which comprises a valve body, two symmetrically-arranged rotating shafts are rotationally connected into the valve body, the side wall of the rotating shaft on one side is fixedly connected with a left plate, and the side wall of the rotating shaft on the other side is fixedly connected with a right plate. A matching mechanism used for being matched with the left plate and the right plate is arranged between the left plate and the right plate, a sealing mechanism used for sealing the valve body is arranged on the inner wall of the valve body, and a traction mechanism used for rotationally pulling the rotating shaft is arranged on the side wall of the rotating shaft. Through the cooperation of the left plate and the right plate, under the combined contact of the corresponding groove and the corresponding plate, the quick response of the valve clack in the closing process can be realized, meanwhile, through the cooperation of the contact plate and the single cone ring, the abutting sealing of the left plate and the right plate can be realized, the sealing performance of the valve body is ensured, and the sealing performance of the valve body is ensured through the rotation of the valve rod under the transmission of a plurality of gears. Rapid synchronous rotation of the rotating shafts on the two sides can be achieved, namely rapid closing of the left plate and the right plate is achieved, and the water hammer phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and in particular to a double-valve-disc linkage anti-leakage check valve. Background Technology

[0002] In fluid transport systems, check valves play a crucial role in preventing backflow of the medium. However, existing check valves have many shortcomings.

[0003] Traditional single-disc check valves exhibit poor sealing performance. After prolonged use, the sealing surface between the valve disc and seat is prone to leakage due to wear and corrosion, especially under high pressure and high flow rate conditions, where seal failure is more common. This not only leads to media leakage and waste but can also pose safety hazards. For example, in the chemical industry, leaks of toxic and hazardous media can cause serious harm to the environment and personnel. Furthermore, some check valves have slow valve disc closing speeds. When the medium stops flowing or backflow occurs, the valve disc cannot close quickly enough, allowing the backflowing medium sufficient time to impact the pipeline system, generating water hammer. Water hammer can damage pipes, connections, and other equipment, reducing system reliability and service life. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a dual-valve-disc linkage anti-leakage check valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dual-valve-disc linkage anti-leakage check valve includes a valve body. Two symmetrically arranged rotating shafts are rotatably connected inside the valve body. A left plate is fixedly connected to the side wall of one rotating shaft, and a right plate is fixedly connected to the side wall of the other rotating shaft. A mating mechanism is provided between the left and right plates for their cooperation. A sealing mechanism is provided on the inner wall of the valve body for sealing the valve body. A traction mechanism is provided on the side wall of the rotating shaft for rotating and pulling the rotating shaft.

[0007] Preferably, the mating mechanism includes a plurality of equally spaced corresponding plates fixedly connected to one side of the right plate, and a plurality of equally spaced corresponding slots are provided on one side of the left plate, the corresponding slots mating with the corresponding plates.

[0008] Preferably, a contact plate is fixedly connected to one side of the right plate, and the contact plate cooperates with the left plate.

[0009] Preferably, the sealing mechanism includes a single conical ring disposed on the inner wall of the valve body, and a connecting groove is provided on one side of the single conical ring.

[0010] Preferably, one side of the valve body is provided with an installation tube, and one side of the installation tube is provided with a mating groove, which corresponds to the connecting groove. One side of the valve body is provided with a plurality of circumferentially arranged snap-fit ​​grooves, and the side wall of the installation tube is fixedly connected with a plurality of circumferentially arranged snap-fit ​​blocks, which correspond to the snap-fit ​​grooves.

[0011] Preferably, the traction mechanism includes a connecting gear fixedly connected to the side wall of the rotating shaft, a rotating gear fixedly connected to the side wall of the rotating shaft, a drive box and a connecting box fixedly connected to the side wall of the valve body, a valve stem rotatably connected inside the drive box, a drive gear fixedly connected to the side wall of the valve stem, the drive gear meshing with the rotating gear, the connecting gear located inside the connecting box, and the rotating gear and the drive gear located inside the drive box.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model is provided with a left plate, a right plate, a corresponding groove, a corresponding plate, a contact plate, and a single cone ring. Through the cooperation of the left plate and the right plate, and the combined contact of the corresponding groove and the corresponding plate, the valve disc can achieve a rapid response during the closing process. At the same time, with the cooperation of the contact plate and the single cone ring, the left plate and the right plate can be tightly sealed to ensure the sealing performance of the valve body.

[0014] 2. This utility model is equipped with a valve stem, connecting gear, rotating gear, driving gear, rotating shaft and driving box. Through the rotation of the valve stem, the rotating shafts on both sides can be rotated quickly and synchronously under the transmission of multiple gears, that is, the left plate and the right plate can be closed quickly, thus avoiding the occurrence of water hammer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the dual-valve-disc linkage anti-leakage check valve proposed in this utility model.

[0016] Figure 2 This is a side view of the dual-valve-disc linkage anti-leakage check valve proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the single cone ring structure of the dual-valve-disc linkage anti-leakage check valve proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the transmission structure of the dual-valve-disc linkage anti-leakage check valve proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the installation pipe structure of the dual-valve-disc linkage anti-leakage check valve proposed in this utility model.

[0020] In the diagram: 1 Valve body, 2 Rotating shaft, 3 Left plate, 4 Right plate, 5 Corresponding groove, 6 Corresponding plate, 7 Contact plate, 8 Drive box, 9 Connecting box, 10 Valve stem, 11 Single cone ring, 12 Connecting groove, 13 Snap-fit ​​groove, 14 Connecting gear, 15 Drive gear, 16 Rotating gear, 17 Mounting pipe, 18 Mating groove, 19 Snap-fit ​​block. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] Reference Figure 1-5 The double-valve-disc linkage anti-leakage check valve includes a valve body 1. Inside the valve body 1, there are two symmetrically arranged rotating shafts 2. A left plate 3 is fixedly connected to the side wall of one rotating shaft 2, and a right plate 4 is fixedly connected to the side wall of the other rotating shaft 2. A contact plate 7 is fixedly connected to one side of the right plate 4, and the contact plate 7 cooperates with the left plate 3.

[0023] A mating mechanism is provided between the left plate 3 and the right plate 4 for the two to cooperate. The mating mechanism includes multiple corresponding plates 6 that are fixedly connected to one side of the right plate 4 and are arranged at equal intervals. Multiple corresponding slots 5 that are arranged at equal intervals are opened on one side of the left plate 3, and the corresponding slots 5 cooperate with the corresponding plates 6.

[0024] The inner wall of the valve body 1 is provided with a sealing mechanism for sealing the valve body. The sealing mechanism includes a single cone ring 11 disposed on the inner wall of the valve body 1. A connecting groove 12 is provided on one side of the single cone ring 11. An installation tube 17 is provided on one side of the valve body 1. A mating groove 18 is provided on one side of the installation tube 17. The mating groove 18 corresponds to the connecting groove 12. A plurality of circumferentially arranged snap-fit ​​grooves 13 are provided on one side of the valve body 1. A plurality of circumferentially arranged snap-fit ​​blocks 19 are fixedly connected to the side wall of the installation tube 17. The snap-fit ​​blocks 19 correspond to the snap-fit ​​grooves 13.

[0025] The side wall of the rotating shaft 2 is provided with a traction mechanism for rotating and pulling the rotating shaft 2. The traction mechanism includes a connecting gear 14 fixedly connected to the side wall of the rotating shaft 2, a rotating gear 16 fixedly connected to the side wall of the rotating shaft 2, a drive box 8 and a connecting box 9 fixedly connected to the side wall of the valve body 1, a valve stem 10 rotatably connected inside the drive box 8, a drive gear 15 fixedly connected to the side wall of the valve stem 10, the drive gear 15 meshing with the rotating gear 16, the connecting gear 14 located inside the connecting box 9, and the rotating gear 16 and the drive gear 15 located inside the drive box 8.

[0026] When using this utility model, such as Figure 1-4 As shown, during use, first rotate the valve stem 10, causing the drive gear 15 on it to mesh with the rotating gear 16 on one side. At this time, the rotating gear 16 drives the rotation of the rotating shaft 2 on one side. Through the meshing transmission of the connecting gear 14, the synchronous rotation of the rotating shafts 2 on both sides can be achieved, that is, the synchronous rotation of the left plate 3 and the right plate 4 can be achieved. During the closing process of the left plate 3 and the right plate 4, multiple corresponding grooves 5 on them are correspondingly attached to the corresponding plates 6, that is, the splicing and fitting of the contact parts of the left plate 3 and the right plate 4 is achieved. At this time, the contact plate 7 rotates to the connection point to engage the corresponding grooves 5 and the corresponding plates 6. The contact seal at the splice of plate 6, and when the left plate 3 and right plate 4 rotate to the contact position with the inner wall of valve body 1, they abut against the conical surface of the single conical ring 11. By abutting against the conical surface, the sealing performance of the left plate 3 and right plate 4 can be guaranteed, that is, the overall sealing performance of valve body 1 can be improved. Then, the single conical ring 11 can be installed and positioned by contacting and splicing the mating groove 18 and connecting groove 12 on the mounting pipe 17. At this time, multiple snap-fit ​​blocks 19 are slidably connected with snap-fit ​​grooves 13, which can provide guidance and support for the installation of mounting pipe 17 and ensure the installation stability of mounting pipe 17.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual-valve-disc linkage type anti-leakage check valve, comprising a valve body (1), characterized in that, The valve body (1) is rotatably connected to two symmetrically arranged rotating shafts (2). A left plate (3) is fixedly connected to the side wall of one rotating shaft (2), and a right plate (4) is fixedly connected to the side wall of the other rotating shaft (2). A mating mechanism is provided between the left plate (3) and the right plate (4) for the two to cooperate. A sealing mechanism for sealing the valve body is provided on the inner wall of the valve body (1). A traction mechanism for rotating the rotating shaft (2) is provided on the side wall of the rotating shaft (2).

2. The dual-valve-disc linkage anti-leakage check valve according to claim 1, characterized in that, The mating mechanism includes multiple equally spaced corresponding plates (6) fixedly connected to one side of the right plate (4), and multiple equally spaced corresponding slots (5) are provided on one side of the left plate (3), and the corresponding slots (5) mate with the corresponding plates (6).

3. The dual-valve-disc linkage anti-leakage check valve according to claim 2, characterized in that, A contact plate (7) is fixedly connected to one side of the right plate (4), and the contact plate (7) cooperates with the left plate (3).

4. The dual-valve-disc linkage anti-leakage check valve according to claim 3, characterized in that, The sealing mechanism includes a single cone ring (11) disposed on the inner wall of the valve body (1), and a connecting groove (12) is provided on one side of the single cone ring (11).

5. The dual-valve-disc linkage anti-leakage check valve according to claim 4, characterized in that, The valve body (1) has an installation tube (17) on one side, and a mating groove (18) is opened on one side of the installation tube (17). The mating groove (18) corresponds to the connecting groove (12). The valve body (1) has multiple circumferentially arranged snap-fit ​​grooves (13) on one side. Multiple circumferentially arranged snap-fit ​​blocks (19) are fixedly connected to the side wall of the installation tube (17). The snap-fit ​​blocks (19) correspond to the snap-fit ​​grooves (13).

6. The dual-valve-disc linkage anti-leakage check valve according to claim 5, characterized in that, The traction mechanism includes a connecting gear (14) fixedly connected to the side wall of the rotating shaft (2), a rotating gear (16) fixedly connected to the side wall of the rotating shaft (2), a drive box (8) and a connecting box (9) fixedly connected to the side wall of the valve body (1), a valve stem (10) rotatably connected inside the drive box (8), a drive gear (15) fixedly connected to the side wall of the valve stem (10), the drive gear (15) meshing with the rotating gear (16), the connecting gear (14) located inside the connecting box (9), and the rotating gear (16) and the drive gear (15) located inside the drive box (8).

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