Swing check valve mechanism

Abstract

The utility model discloses a swing check valve mechanism, which belongs to the technical field of check valves and comprises a valve body, a valve plate and a side supporting mechanism, the two ends of the valve body are connected with a water inlet pipe and a water outlet pipe, the valve plate is rotatably connected with the inner wall of the valve body through a reset hinge shaft seat, and the side supporting mechanism is used for supporting the two sides of the valve plate. The side supporting mechanism comprises a guide rail and rolling supporting pieces, the guide rail is fixedly arranged on the inner wall of the valve body, and the rolling supporting pieces are installed on the two sides of the valve plate and roll in the guide rail. According to the technical scheme, when the valve plate rotates, the rolling supporting piece synchronously rolls in the guide rail, on the basis of the structural form, sufficient and symmetrical supporting can be provided for the two sides of the valve plate, the abrasion speed of the hinged position of the valve plate is greatly reduced, the situation that the valve plate swings and deviates in the rotating process can be effectively avoided, and the service life of the valve plate is prolonged. And meanwhile, the supporting mode does not influence normal rotation of the valve plate.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a swing check valve mechanism. Background Technology

[0002] A swing check valve mainly consists of a valve body, valve cover, valve disc, and rocker arm. Its working principle is based on fluid pressure and the weight of the valve disc. When the fluid flows in the forward direction, the fluid pressure acts on the valve disc, causing it to rotate around the pin and open the valve, allowing the medium to pass through. When the fluid stops flowing or flows in the opposite direction, the valve disc rotates around the pin under its own weight and the pressure of the counterflowing fluid, closing the valve and preventing backflow of the medium.

[0003] The utility model with announcement number CN218440815U discloses a swing check valve with a slow-closing mechanism. This utility model uses a telescopic rod, a support block, a spring, a fastening bolt, and a nut to achieve slow opening and slow closing of the valve disc on the valve seat by utilizing the interaction between them. This avoids mechanical wear caused by violent opening and closing and extends the service life.

[0004] In common check valves, the valve disc is usually hinged to the valve body only at the top. Due to the lack of support on both sides of the valve disc, all the force during the opening and closing rotation of the valve disc is borne by the hinge, resulting in significant friction at the hinge. When the wear of the hinge structure reaches a certain level, the valve disc will swing while rotating, causing deviation during reset and affecting the valve's check valve effect. Although the telescopic rod in the valve body provides some support, it is located at the center of the valve disc and therefore cannot provide sufficient support to ensure that the valve disc does not swing or deflect. Therefore, to address the above problems, a swing check valve mechanism is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a swing check valve mechanism, which has a side support mechanism, including a guide rail and a rolling support. The guide rail is fixedly installed on the inner wall of the valve body, and the rolling support is installed on both sides of the valve plate. When the valve plate rotates, the rolling support rolls synchronously in the guide rail. Based on the above structure, sufficient and symmetrical support can be provided on both sides of the valve plate, which greatly reduces the wear rate at the valve plate hinge and can effectively prevent the valve plate from swinging and deviating during rotation. At the same time, this support method does not affect the normal rotation of the valve plate. It solves the technical problem in the comparative technology that the valve plate lacks effective lateral support and is prone to swinging and deviating due to wear after long-term use.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A swing check valve mechanism includes a valve body with an inlet pipe and an outlet pipe respectively sealed at both ends, a valve plate rotatably connected to the inner wall of the valve body via a reset hinge seat. When the valve plate rotates upward, it separates from the inner port of the inlet pipe; when the valve plate rotates downward, it engages with the inner port of the inlet pipe. A side support mechanism provides support to both sides of the valve plate and limits the overall movement of the valve plate. The side support mechanism includes a guide rail and rolling supports. The guide rail is fixedly installed on the inner wall of the valve body, and the rolling supports are installed on both sides of the valve plate and roll within the guide rail. When the valve plate rotates, the rolling supports roll synchronously within the guide rail. Based on the above structure, sufficient and symmetrical support can be provided to both sides of the valve plate, significantly reducing the wear rate at the valve plate hinge and effectively preventing the valve plate from swinging or shifting during rotation. At the same time, this support method does not affect the normal rotation of the valve plate.

[0008] In one possible implementation, the guide rail includes a curved groove plate covered with a cover plate, and the rolling support includes a roller that rolls in the curved groove plate and is connected to the side of the valve plate via an axle. In the above structure, the curved groove plate is used to accommodate and guide the roller to roll in accordance with the movement trajectory of the valve plate, while the cover plate can prevent the roller from deviating during rolling.

[0009] In one possible implementation, the reset hinge bearing includes a fixed seat fixedly disposed on the inner wall of the valve body, wherein a rotating shaft is installed, and a rotating cylinder rotatably connected to the middle of the rotating shaft is sleeved thereon. The rotating cylinder is used to fixally connect the valve plate. In the above structure, the rotating cylinder can rotate around the rotating shaft, thereby realizing the rotatable connection between the valve plate and the valve body.

[0010] In one possible implementation, both the rotating cylinder and the fixed base are fixedly provided with mating end plates. A reset torsion spring is provided between the mating end plates and sleeved on the rotating shaft. The two ends of the reset torsion spring are respectively fixedly connected to the corresponding mating end plates. When the valve plate rotates, it will drive the mating end plate on one side to rotate. At this time, the reset torsion spring twists and accumulates reverse torque, thereby playing a buffering role and preventing the valve plate from suddenly tilting up under water pressure and causing a serious structural collision.

[0011] In one possible implementation, the valve plate includes a base plate on which a connecting rod for fixed connection with the rotating cylinder is provided, and an inner end face of the base plate is provided with a rubber gasket that matches the inner port of the water inlet pipe. In the above structure, the rubber gasket is used to seal the inner port of the water inlet pipe and play a role in preventing backflow, while the base plate can significantly enhance the overall rigidity of the rubber gasket and prevent it from deforming under pressure and failing to completely seal the water inlet pipe.

[0012] In one possible implementation, the substrate has several insertion holes, and the rubber pad is fixedly provided with insertion protrusions corresponding to the insertion holes. The insertion holes and insertion protrusions are connected by insertion. The above structure can realize the detachable connection between the rubber pad and the substrate, which is convenient for easy replacement after the rubber pad ages and deforms.

[0013] In one possible implementation, the valve body is covered with a valve cover, and the two are fixedly connected by connecting bolts. The valve body has a mounting groove at the top, in which a sealing ring is installed. This structure can improve the airtightness of the connection between the valve cover and the valve body, and prevent water leakage at the connection.

[0014] In summary, this utility model has the following beneficial technical effects:

[0015] The check valve is equipped with a side support mechanism, which includes a guide rail and a rolling support. The guide rail is fixedly installed on the inner wall of the valve body, and the rolling support is installed on both sides of the valve plate. When the valve plate rotates, the rolling support rolls synchronously in the guide rail. Based on the above structure, it can provide sufficient and symmetrical support on both sides of the valve plate, which greatly reduces the wear rate at the valve plate hinge and can effectively prevent the valve plate from swinging and deviating during rotation. At the same time, this support method does not affect the normal rotation of the valve plate.

[0016] In addition, the reset hinge bearing can provide a reverse torque when the valve plate flips up and opens, and the greater the flipping range, the greater the reverse torque, thereby playing a buffering role and preventing the valve plate from suddenly tilting up under water pressure, causing the rolling support to collide violently with the guide rail and be damaged. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the side support mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the valve plate structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the valve cover installation structure of this utility model.

[0024] In the diagram: 1. Valve body; 11. Mounting groove; 12. Sealing ring; 2. Inlet pipe; 3. Outlet pipe; 4. Reset hinged shaft seat; 41. Fixed seat; 42. Rotating shaft; 43. Rotating cylinder; 44. Mating end plate; 45. Reset torsion spring; 5. Valve plate; 51. Connecting rod; 52. Base plate; 521. Insertion hole; 53. Rubber gasket; 531. Insertion convex shaft; 6. Side support mechanism; 61. Axle; 62. Roller; 63. Curved groove plate; 64. Cover plate; 7. Valve cover; 71. Connecting bolt. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 2 As shown, this embodiment provides a swing check valve mechanism, including a valve body 1, with an inlet pipe 2 and an outlet pipe 3 respectively sealed at both ends, a valve plate 5, which is rotatably connected to the inner wall of the valve body 1 through a reset hinge seat 4. When the valve plate 5 rotates upward, it separates from the inner port of the inlet pipe 2; when the valve plate 5 rotates downward, it fits against the inner port of the inlet pipe 2. A side support mechanism 6 is used to provide support for both sides of the valve plate 5 and to limit the overall position of the valve plate 5. It can provide sufficient and symmetrical support for both sides of the valve plate 5, greatly reducing the wear rate at the hinge of the valve plate 5, and effectively preventing the valve plate 5 from swinging and deviating during rotation. At the same time, this support method does not affect the normal rotation of the valve plate 5.

[0027] like Figure 3 - Figure 4 As shown, the side support mechanism 6 includes a guide rail and a rolling support. The guide rail is fixedly installed on the inner wall of the valve body 1, and the rolling support is installed on both sides of the valve plate 5. The rolling support rolls in the guide rail. When the valve plate 5 rotates, the rolling support rolls synchronously in the guide rail. Based on the above structure, it can provide sufficient and symmetrical support on both sides of the valve plate 5, which greatly reduces the wear rate at the hinge of the valve plate 5 and can effectively prevent the valve plate 5 from swinging and deviating during rotation. At the same time, this support method does not affect the normal rotation of the valve plate 5. The guide rail includes a curved groove plate 63, which is covered with a cover plate 64. The rolling support includes a roller 62 that rolls in the curved groove plate 63 and is connected to the side of the valve plate 5 through a wheel axle 61. In the above structure, the curved groove plate 63 is used to accommodate and guide the roller 62 to roll in accordance with the movement trajectory of the valve plate 5, while the cover plate 64 can prevent the roller 62 from deviating during rolling.

[0028] like Figure 3As shown, the reset hinge bearing 4 includes a fixed seat 41 fixedly installed on the inner wall of the valve body 1, in which a rotating shaft 42 is installed. A rotating cylinder 43 is rotatably connected to the middle of the rotating shaft 42. The rotating cylinder 43 is used to fix the valve plate 5. In the above structure, the rotating cylinder 43 can rotate around the rotating shaft 42, thereby realizing the rotatable connection between the valve plate 5 and the valve body 1. In addition, both the rotating cylinder 43 and the fixed seat 41 are fixedly provided with mating end plates 44. A reset torsion spring 45 is provided between the mating end plates 44 and sleeved on the rotating shaft 42. The two ends of the reset torsion spring 45 are respectively fixedly connected to the corresponding mating end plates 44. When the valve plate 5 rotates, it will drive the mating end plate 44 on one side to rotate. At this time, the reset torsion spring 45 twists and accumulates reverse torque, thereby playing a buffering role and preventing the valve plate 5 from suddenly tilting up under water pressure and causing a serious structural collision.

[0029] like Figure 5 As shown, the valve plate 5 includes a base plate 52, on which a connecting rod 51 for fixed connection with the rotating cylinder 43 is provided. The inner end face of the base plate 52 is provided with a rubber gasket 53 that matches the inner port of the water inlet pipe 2. In the above structure, the rubber gasket 53 is used to seal the inner port of the water inlet pipe 2 and play a role in preventing backflow. The base plate 52 can significantly enhance the overall rigidity of the rubber gasket 53 and prevent it from deforming under pressure and failing to completely seal the water inlet pipe 2. The base plate 52 is provided with several insertion holes 521. The rubber gasket 53 is fixedly provided with an insertion protrusion 531 corresponding to the insertion hole 521. The insertion hole 521 and the insertion protrusion 531 are inserted and connected. The above structure can realize the detachable connection between the rubber gasket 53 and the base plate 52, which is convenient for easy replacement after the rubber gasket 53 ages and deforms.

[0030] like Figure 6 As shown, the valve body 1 is covered with a valve cover 7, and the two are fixedly connected by connecting bolts 71. The valve body 1 has an installation groove 11 at the top, in which a sealing ring 12 is installed. The above structure can improve the airtightness of the connection between the valve cover 7 and the valve body 1, and prevent water leakage at the connection.

[0031] The working principle and usage process of this utility model:

[0032] The check valve is equipped with a side support mechanism 6, which includes a guide rail and rolling support members. The guide rail is fixedly installed on the inner wall of the valve body 1, and the rolling support members are installed on both sides of the valve plate 5. When the valve plate 5 rotates, the rolling support members roll synchronously in the guide rail. Based on the above structure, sufficient and symmetrical support can be provided to both sides of the valve plate 5, which greatly reduces the wear rate at the hinge of the valve plate 5 and can effectively prevent the valve plate 5 from swinging or deviating during rotation. At the same time, this support method does not affect the normal rotation of the valve plate 5. In the structure of the side support mechanism 6, the curved groove plate 63 is used to accommodate and guide the roller 62 to roll in accordance with the movement trajectory of the valve plate 5, while the cover plate 64 can prevent the roller 62 from deviating during rolling.

[0033] In addition, the reset hinge seat 4 can provide reverse torque when the valve plate 5 flips up and opens, and the greater the flipping range, the greater the reverse torque. Specifically, when the valve plate 5 rotates, it will drive the mating end plate 44 on one side to rotate. At this time, the reset torsion spring 45 twists and accumulates reverse torque, thereby playing a buffering role and preventing the valve plate 5 from suddenly tilting up under water pressure, causing the rolling support to collide violently with the guide rail and be damaged.

[0034] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A swing check valve mechanism, characterized in that, include: The valve body (1) has an inlet pipe (2) and an outlet pipe (3) sealed at both ends respectively; The valve plate (5) is rotatably connected to the inner wall of the valve body (1) through the reset hinge shaft seat (4). When the valve plate (5) rotates upward, it separates from the inner port of the water inlet pipe (2). When the valve plate (5) rotates downward, it fits into the inner port of the water inlet pipe (2). Side support mechanism (6) is used to provide support for both sides of valve plate (5) and to limit the overall position of valve plate (5); The side support mechanism (6) includes a guide rail and a rolling support member. The guide rail is fixedly installed on the inner wall of the valve body (1), and the rolling support member is installed on both sides of the valve plate (5) and rolls in the guide rail.

2. The swing check valve mechanism according to claim 1, characterized in that: The guide rail includes a curved groove plate (63) covered with a cover plate (64), and the rolling support includes a roller (62) that rolls in the curved groove plate (63) and is connected to the side of the valve plate (5) via a wheel axle (61).

3. The swing check valve mechanism according to claim 1, characterized in that: The reset hinge shaft seat (4) includes a fixed seat (41) fixedly installed on the inner wall of the valve body (1), in which a rotating shaft (42) is installed, and a rotating cylinder (43) is rotatably connected in the middle of the rotating shaft (42), and the rotating cylinder (43) is used to fix the valve plate (5).

4. The swing check valve mechanism according to claim 3, characterized in that: Both the rotating cylinder (43) and the fixed base (41) are fixedly provided with mating end pieces (44). A reset torsion spring (45) is provided between the mating end pieces (44) and sleeved on the rotating shaft (42). The two ends of the reset torsion spring (45) are respectively fixedly connected to the corresponding mating end pieces (44).

5. A swing check valve mechanism according to claim 3, characterized in that: The valve plate (5) includes a base plate (52) on which a connecting rod (51) is provided for fixed connection with the rotating cylinder (43), and a rubber gasket (53) matching the inner port of the water inlet pipe (2) is provided on the inner end face of the base plate (52).

6. A swing check valve mechanism according to claim 5, characterized in that: The substrate (52) has a plurality of insertion holes (521), and the adhesive pad (53) is fixedly provided with an insertion protrusion (531) corresponding to the insertion hole (521), and the insertion hole (521) and the insertion protrusion (531) are connected by insertion.

7. A swing check valve mechanism according to claim 1, characterized in that: The valve body (1) is covered with a valve cover (7), and the two are fixedly connected by connecting bolts (71). The valve body (1) has an installation groove (11) at the top, in which a sealing ring (12) is installed.

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