Air volume adjusting valve

Abstract

The utility model discloses an air volume adjusting valve which comprises a valve body. A U-shaped mounting frame is arranged on the front face of the valve body, a through hole is formed in the front face of the mounting frame, a rotating rod is rotationally arranged in the through hole, and threads are arranged on the outer side of the end, extending out of the through hole, of the rotating rod and are in threaded connection with a locking nut. The other end of the rotating rod extends into the valve body and is rotationally connected with the valve body; a valve plate sealing assembly is arranged in the valve body. The baffle I and the baffle II are additionally arranged on the two sides in the valve body, so that when the valve plate is closed, sealing is achieved through contact with the baffle I and the baffle II instead of extrusion with the inner side face of the valve body, on the basis, gaps can be reduced through the limiting insertion strip I and the limiting insertion strip II, and sealing is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an air volume regulating valve. Background Art

[0002] The air volume regulating valve is an indispensable terminal accessory for central air conditioners in the ventilation, air conditioning and air purification projects of industrial factories and civil buildings. It is generally used in air conditioning and ventilation system pipelines to regulate the air volume of branch pipes and can also be used for the mixed regulation of fresh air and return air.

[0003] When the air volume regulating valve is in use, the flow is cut off by the extrusion contact between the valve plate and the inner side of the valve body. However, after long-term use, the contact surface is prone to wear, affecting the sealing performance. In the prior art, rubber sealing strips are added at both ends of the valve plate. On the one hand, it avoids hard contact with the inner side of the valve body, and on the other hand, it increases the sealing performance. However, in actual operation, the sealing performance and anti-wear performance are mutually exclusive. As long as the rubber sealing strip contacts the inner side of the valve body, extrusion and wear will inevitably occur, and there is room for technical improvement. Content of the Utility Model

[0004] The utility model aims to solve the technical problem in the prior art that the sealing performance and anti-wear performance are mutually exclusive, and as long as the rubber sealing strip contacts the inner side of the valve body, extrusion and wear will inevitably occur, and provides an air volume regulating valve.

[0005] To solve the above technical problem, the technical solution provided by the utility model is: an air volume regulating valve, including a valve body; a U-shaped mounting frame is provided on the front surface of the valve body, a through hole is provided on the front surface of the mounting frame, a rotating rod is rotatably provided in the through hole, a thread is provided on the outer side of one end of the rotating rod extending out of the through hole, and a locking nut is threadedly connected thereto; one end of the rotating rod extends out of the mounting frame and is provided with a handle, and the other end extends into the valve body and is rotatably connected thereto;

[0006] A valve plate sealing assembly is provided in the valve body. The valve plate sealing assembly includes valve plates on both sides of the rotating rod in the valve body; the valve plates are asymmetric, and the valve plate on the left side of the rotating rod is higher than the valve plate on the right side; a baffle one and a baffle two are respectively provided on both sides in the valve body, and extension plates are detachably provided on the mutually remote side surfaces of the valve plates. A limiting insertion strip one is provided under the extension plate close to the left side, and a limiting insertion strip two is provided above the extension plate close to the right side; a limiting slot one capable of accommodating the limiting insertion strip one is provided at the upper end of the baffle one, and a limiting slot two capable of accommodating the limiting insertion strip two is provided at the lower end of the baffle two.

[0007] Further, connection flanges are provided on the outer sides of the upper and lower ends of the valve body, and assembly holes are provided at the four corners of the connection flanges.

[0008] Further, sealing rings are provided on the mutually remote side surfaces of the connection flanges, and the sealing rings are all made of rubber.

[0009] Further, mounting plates are provided at the upper and lower ends of the first baffle and the second baffle, and they are fixedly connected to the valve body through the mounting plates.

[0010] Further, receiving grooves are provided at the ends of the valve plates away from each other, and convex plates that can be inserted into the receiving grooves are provided at the ends of the extension plates close to each other; a plurality of threaded through grooves are provided on the valve plates, the threaded through grooves penetrate through the receiving grooves and the convex plates, bolts are threadedly connected in the threaded through grooves, and the lower ends of the bolts extend out of the valve plates and are threadedly connected with nuts.

[0011] The advantages of the present utility model compared with the prior art are as follows:

[0012] Detachable extension plates are added on both sides of the valve plate. If damage occurs after long-term use, only the extension plates need to be replaced.

[0013] By adding the first baffle and the second baffle on both sides inside the valve body, when the valve plate is closed, the sealing is achieved not by squeezing against the inner side of the valve body, but by contacting the first baffle and the second baffle. On this basis, the first limiting insert and the second limiting insert can reduce the gap and further enhance the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a schematic cross-sectional view of the present utility model.

[0016] Figure 3 is a schematic structural diagram of the valve plate and the extension plate of the present utility model.

[0017] Figure 4 is a front view of the valve plate sealing assembly of the present utility model.

[0018] Figure 5 is the present utility model Figure 4 enlarged view at A in.

[0019] As shown in the figure: 1. Valve body, 2. Connecting flange, 3. Assembly hole, 4. Sealing ring, 5. Mounting bracket, 6. Rotating rod, 7. Locking nut, 8. Handle, 9. Valve plate, 10. First baffle, 11. Second baffle, 12. Extension plate, 13. First limiting insert, 14. Second limiting insert, 15. First limiting slot, 16. Second limiting slot, 17. Receiving groove, 18. Convex plate, 19. Bolt, 20. Nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Embodiment 1, in combination with the attached Figure 1, A air volume regulating valve, comprising a valve body 1; connection flanges 2 are provided on the outer sides of the upper and lower ends of the valve body 1, and assembly holes 3 are provided at the four corners of the connection flanges 2; sealing rings 4 are provided on the mutually remote sides of the connection flanges 2, and the sealing rings 4 are all made of rubber material; the valve body 1 can be easily installed at the required position through the connection flanges 2, and when connected to the equipment pipeline, the sealing rings 4 can improve the sealing performance and reduce the air volume loss.

[0022] Combined with the attached Figure 1 , An installation bracket 5 in the shape of a U is provided on the front surface of the valve body 1. A through hole is provided on the front surface of the installation bracket 5, and a rotating rod 6 is rotatably provided in the through hole. Threads are provided on the outer side of one end of the rotating rod 6 extending out of the through hole, and a locking nut 7 is threadedly connected thereto; a handle 8 is provided at one end of the rotating rod 6 extending out of the installation bracket 5, and the other end extends into the valve body 1 and is rotatably connected thereto; the valve plate can be adjusted by driving the rotating rod 6 to rotate through the handle 8. After adjustment, the locking nut 7 is rotated to squeeze the installation bracket 5 to realize the limit of the rotating rod 6.

[0023] Combined with the attached Figures 2 - 5 , A valve plate sealing assembly is provided in the valve body 1. The valve plate sealing assembly includes valve plates 9 on both sides of the rotating rod 6 inside the valve body 1; the valve plates 9 are asymmetric. The valve plate 9 on the left side of the rotating rod 6 is higher than the valve plate 9 on the right side. Thus, when sealed, the valve plate 9 is in a horizontal state rather than an inclined state, increasing the contact area and thus ensuring the sealing performance; baffle plates 10 and 11 are respectively provided on both sides inside the valve body 1. Installation plates are provided at the upper and lower ends of the baffle plates 10 and 11, and are fixedly connected to the valve body 1 through the installation plates; correspondingly, the baffle plates 10 and 11 are also asymmetric, and the baffle plate 10 is lower than the baffle plate 11, facilitating surface-to-surface contact with the valve plate 9 rather than line-to-surface contact.

[0024] Combined with the attached Figures 1 - 3 , Extension plates 12 are detachably provided on the mutually remote sides of the valve plates 9. A limiting insertion strip 13 is provided below the extension plate 12 near the left side, and a limiting insertion strip 14 is provided above the extension plate 12 near the right side; a limiting slot 15 capable of accommodating the limiting insertion strip 13 is provided at the upper end of the baffle plate 10, and a limiting slot 16 capable of accommodating the limiting insertion strip 14 is provided at the lower end of the baffle plate 11; the limiting insertion strip 13 enters the limiting slot 15, and the limiting insertion strip 14 enters the limiting slot 16, reducing the gap between the extension plate 12 and the baffle plates 10 and 11 and improving the sealing performance.

[0025] Combined with the attached Figure 4 、 5, receiving grooves 17 are provided at both ends of the valve plate 9 away from each other, and convex plates 18 that can be inserted into the receiving grooves 17 are provided at both ends of the extension plates 12 close to each other; a number of threaded through grooves are provided on the valve plate 9, and the threaded through grooves penetrate through the receiving grooves 17 and the convex plates 18. Bolts 19 are threadedly connected in the threaded through grooves, and the lower ends of the locking bolts 19 extend out of the valve plate 9 and are threadedly connected with nuts 20; so that the extension plates 12 can be disassembled, and the extension plates 12 can be replaced separately when damaged, without replacing the entire valve plate 9.

[0026] The working principle of the present invention: drive the rotating rod 6 and the valve plate 9 to rotate in the clockwise direction through the handle 8. When it rotates to the longitudinal direction, the overall air flow rate is the largest. When it needs to be closed, rotate the valve plate 9 counterclockwise until the extension plate 12 contacts the corresponding baffle one 10 or baffle two 11 to achieve the blocking of the wind. At this time, the limit insert one 13 enters the limit slot one 15, and the limit insert two 14 enters the limit slot two 16, thereby reducing the gap between the extension plate 12 and the baffle one 10 and the baffle two 11, improving the sealing performance, and it is not easy to cause wear of the valve plate due to extrusion.

[0027] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A air volume regulating valve, comprising a valve body (1); characterized in that: The front of the valve body (1) is provided with a U-shaped mounting bracket (5). The front of the mounting bracket (5) is provided with a through hole, and a rotating rod (6) is rotatably arranged in the through hole. The outer side of one end of the rotating rod (6) extending out of the through hole is provided with threads and is threadedly connected with a locking nut (7); one end of the rotating rod (6) extending out of the mounting bracket (5) is provided with a handle (8), and the other end extends into the valve body (1) and is rotatably connected thereto. A valve plate sealing assembly is arranged in the valve body (1). The valve plate sealing assembly includes valve plates (9) in the valve body (1) and on both sides of the rotating rod (6); the valve plates (9) are asymmetric, and the valve plate (9) on the left side of the rotating rod (6) is higher than the valve plate (9) on the right side; on both sides inside the valve body (1), a first baffle (10) and a second baffle (11) are respectively arranged. Removable extension plates (12) are arranged on the mutually remote sides of the valve plates (9). A first limit insertion strip (13) is arranged under the extension plate (12) near the left side, and a second limit insertion strip (14) is arranged above the extension plate (12) near the right side; a first limit slot (15) capable of accommodating the first limit insertion strip (13) is arranged at the upper end of the first baffle (10), and a second limit slot (16) capable of accommodating the second limit insertion strip (14) is arranged at the lower end of the second baffle (11).

2. The air volume regulating valve according to claim 1, wherein: Connection flanges (2) are arranged on the outer sides of the upper and lower ends of the valve body (1), and assembly holes (3) are arranged at the four corners of the connection flanges (2).

3. The air volume regulating valve according to claim 2, characterized in that: Sealing rings (4) are arranged on the mutually remote sides of the connection flanges (2), and the sealing rings (4) are all made of rubber.

4. The air volume regulating valve according to claim 1, characterized in that: Mounting plates are arranged at the upper and lower ends of the first baffle (10) and the second baffle (11), and are fixedly connected to the valve body (1) through the mounting plates.

5. The air volume regulating valve according to claim 1, wherein: Receiving grooves (17) are arranged at the mutually remote ends of the valve plates (9), and convex plates (18) capable of being inserted into the receiving grooves (17) are arranged at the mutually close ends of the extension plates (12); a plurality of threaded through grooves are arranged on the valve plates (9), and the threaded through grooves penetrate through the receiving grooves (17) and the convex plates (18). Bolts (19) are threadedly connected in the threaded through grooves, and the lower ends of the bolts (19) extend out of the valve plates (9) and are threadedly connected with nuts (20).

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