Waterproof structure of balance valve

Abstract

The utility model discloses a balance valve waterproof structure which comprises a valve body, an actuator shell is installed at the bottom of the valve body, the actuator shell is provided with an upper shell and a lower shell, a sealing part is installed on the lower shell, the sealing part is provided with two rectangular plates, guide grooves are formed in the two rectangular plates, and the guide grooves are communicated with the upper shell and the lower shell. Convex blocks are arranged in the two guide grooves in a sliding fit mode, springs are installed in the guide grooves, and the two ends of the springs are connected with the convex blocks and the inner walls of the guide grooves correspondingly. Under the matching action of a first U-shaped ring and a convex block, an actuator shell is installed, the convex block is pushed through a spring, so that the first U-shaped ring and a second U-shaped ring are close to the inner side till the two ends make contact with each other, the connecting position of an upper shell and a lower shell is sealed, the sealing performance is improved in cooperation with a sealing strip, and tiny gaps at the connecting position are effectively sealed; intrusion of water, moisture and corrosive substances is prevented, the service life of the actuator is prolonged, and stable operation of the valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a waterproof structure of a balance valve. Background Art

[0002] In the fields of modern industry and architecture, automatic balance valves, as key hydraulic regulating components, are widely used in heating, ventilation, air conditioning and other systems to ensure the stability of fluid pressure and flow in pipelines. The automatic balance valve automatically adjusts the opening degree of the valve according to the change of system pressure through the built-in actuator, so as to maintain the hydraulic balance of the system and improve the operation efficiency and stability of the system. However, the working environment of the automatic balance valve is often complex and changeable, especially in a water-related environment, which poses extremely high requirements on the sealing performance of the valve;

[0003] In the existing design of automatic balance valves, the housing of the actuator usually adopts a split structure, which is composed of an upper housing and a lower housing fastened by bolts. Since the upper housing and the lower housing are connected by bolts, there are inevitably gaps at the connection. These gaps are prone to be eroded by water, moisture and corrosive substances during long-term use, resulting in a decline in sealing performance and even water leakage. Water leakage will not only affect the normal operation of the automatic balance valve, but also may cause damage to the surrounding environment and equipment, increase the maintenance cost, and reduce the reliability of system operation. Therefore, a waterproof structure of a balance valve is proposed to overcome the above defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waterproof structure of a balance valve, which realizes the function of waterproofing the actuator housing by sealing the connection between the upper housing and the lower housing through convex blocks and a sealing part.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model is a waterproof structure of a balance valve, including a valve body. An actuator housing is installed at the bottom of the valve body. The actuator housing has an upper housing and a lower housing, and a sealing part is installed on the lower housing.

[0007] The sealing part has rectangular plates. The number of the rectangular plates is two. Guide grooves are opened in both of the two rectangular plates. Convex blocks are slidably fitted in both of the two guide grooves. Springs are installed in the guide grooves. Two ends of each spring are respectively connected with the convex block and the inner wall of the guide groove. A first U-shaped ring and a second U-shaped ring are respectively installed on the two convex blocks.

[0008] Limit blocks are installed at both ends of the second U-shaped ring. Card slots are opened in both of the two limit blocks. Limit grooves matched with the limit blocks are opened in both ends of the first U-shaped ring. And elastic pieces are connected to both ends of the first U-shaped ring. Buckles are connected to the outer surfaces of the two elastic pieces. The buckles are clamped in the card slots.

[0009] Preferably, a sealing strip is installed inside the lower housing, and a sealing groove matching the sealing strip is provided at the bottom of the upper housing.

[0010] Preferably, sealing rings are installed on the inner walls of the first U-shaped ring and the second U-shaped ring, and the two sealing rings are in contact with the connection parts of the lower housing and the upper housing.

[0011] Preferably, two sliding rods are installed at the bottom of the first U-shaped ring, and sliding grooves matching the sliding rods are provided in the rectangular plate.

[0012] Preferably, rectangular blocks are installed on the outer surface of the elastic sheet.

[0013] Preferably, abutting blocks are installed at both ends of the first U-shaped ring, and the two abutting blocks are in contact with the corresponding elastic sheets.

[0014] The utility model has the following beneficial effects:

[0015] 1. Under the combined action of the first U-shaped ring and the convex block, the actuator housing is installed. By pushing the convex block with the spring, the first U-shaped ring and the second U-shaped ring move closer to the inside until they touch at both ends, sealing the connection part between the upper housing and the lower housing. Cooperating with the sealing strip to increase the sealing performance, effectively closing the tiny gaps at the connection part, preventing the intrusion of water, moisture and corrosive substances, prolonging the service life of the actuator, ensuring the stable operation of the valve, thus reducing the maintenance times and maintenance costs, improving the economic efficiency of the valve use, preventing water penetration, and further reducing the failures caused by water, thereby improving the stability and safety of the entire fluid control system;

[0016] 2. Under the combined action of the limiting block and the buckle, after the first U-shaped ring and the second U-shaped ring touch each other, the buckle is snapped into the card slot to fix the limiting block by the rebound of the elastic sheet. Furthermore, the positions of the first U-shaped ring and the second U-shaped ring can be limited, ensuring that even under harsh working conditions such as vibration and temperature change, a good sealing state can be maintained, preventing the separation of the first U-shaped ring and the second U-shaped ring, increasing the protection and waterproof effect of the actuator, avoiding potential safety hazards, reducing the maintenance cost, and improving the overall operation efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the valve body and the actuator housing;

[0018] Figure 2 It is a structural schematic diagram of the actuator housing;

[0019] Figure 3 It is a structural schematic diagram of the rectangular plate and the first U-shaped ring;

[0020] Figure 4 For Figure 3 The enlarged structural schematic diagram at A in

[0021] Figure 5 It is a schematic diagram of the internal structure of a rectangular plate.

[0022] In the figure: 1. Valve body; 2. Upper housing; 3. Lower housing; 301. Sealing strip; 4. Rectangular plate; 401. Guide groove; 402. Slide groove; 5. Convex block; 6. Spring; 7. First U-shaped ring; 701. Sealing ring; 702. Slide rod; 703. Limit groove; 704. Block; 8. Second U-shaped ring; 9. Limit block; 901. Card slot; 10. Elastic piece; 1001. Rectangular block; 11. Buckle. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Refer to Figures 1-5 , a waterproof structure of a balance valve, including a valve body 1. An actuator housing is installed at the bottom of the valve body 1. The actuator housing has an upper housing 2 and a lower housing 3. A sealing strip 301 is installed in the lower housing 3. A sealing groove matching with the sealing strip 301 is opened at the bottom of the upper housing 2. By providing the sealing strip 301, the sealing performance at the connection between the upper housing 2 and the lower housing 3 can be increased. A sealing portion is installed on the lower housing 3.

[0025] The sealing part has a rectangular plate 4. The number of the rectangular plates 4 is two. Guide grooves 401 are formed in both of the two rectangular plates 4. Convex blocks 5 are slidably fitted in both of the two guide grooves 401. Springs 6 are installed in the guide grooves 401. Two ends of each spring 6 are respectively connected with the convex block 5 and the inner wall of the guide groove 401. A first U-shaped ring 7 and a second U-shaped ring 8 are respectively installed on the two convex blocks 5. Sealing rings 701 are installed on the inner walls of the first U-shaped ring 7 and the second U-shaped ring 8. And the two sealing rings 701 are in contact with the connection parts of the lower shell 3 and the upper shell 2. By arranging the sealing rings 701, the sealing performance of the connection part of the lower shell 3 and the upper shell 2 can be improved. Two slide bars 702 are installed at the bottom of the first U-shaped ring 7. Slide grooves 402 matched with the slide bars 702 are formed in the rectangular plate 4. When the first U-shaped ring 7 moves, the two slide bars 702 respectively move in the corresponding slide grooves 402 to keep the movement of the first U-shaped ring 7 stable. When installing the actuator housing, the first U-shaped ring 7 and the second U-shaped ring 8 are pulled outward to compress the springs 6 to ensure the smooth progress of the installation. At this time, after the upper shell 2 and the lower shell 3 are connected by bolts, the first U-shaped ring 7 and the second U-shaped ring 8 are released, and the convex blocks 5 are pushed by the springs 6 to move in the guide grooves 401, so that the first U-shaped ring 7 and the second U-shaped ring 8 move closer to the inner side. At this time, the two ends of the first U-shaped ring 7 and the second U-shaped ring 8 are in contact, sealing the connection part of the upper shell 2 and the lower shell 3, and cooperating with the sealing strip 301 to increase the sealing performance, effectively closing the tiny gaps at the connection part.

[0026] Limit blocks 9 are installed at both ends of the second U-shaped ring 8. Card slots 901 are formed in both of the two limit blocks 9. Limit grooves 703 matched with the limit blocks 9 are formed in both ends of the first U-shaped ring 7. And elastic pieces 10 are connected to both ends of the first U-shaped ring 7. Rectangular blocks 1001 are installed on the outer surfaces of the elastic pieces 10. By arranging the rectangular blocks 1001, it is convenient to pull the elastic pieces 10 to make the elastic pieces 10 deformed. Clasps 11 are connected to the outer surfaces of the two elastic pieces 10. The clasps 11 are clamped in the card slots 901. Blocking blocks 704 are installed at both ends of the first U-shaped ring 7. The two blocking blocks 704 are in contact with the corresponding elastic pieces 10. By arranging the blocking blocks 704, when the elastic pieces 10 rebound, it can be avoided that the rebound angle is too large and the limit blocks 9 are damaged. After the first U-shaped ring 7 and the second U-shaped ring 8 are in contact, the limit blocks 9 are connected into the limit grooves 703. At this time, the elastic pieces 10 rebound to make the clasps 11 snap into the card slots 901 to fix the limit blocks 9, and then the positions of the first U-shaped ring 7 and the second U-shaped ring 8 can be limited. When the actuator housing needs to be disassembled, only need to pull the rectangular blocks 1001 to make the clasps 11 move out of the card slots 901, and then the limit on the second U-shaped ring 8 can be released, so that the first U-shaped ring 7 and the second U-shaped ring 8 can be separated.

[0027] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A balancing valve waterproof structure, characterized in that: include: A valve body (1), wherein an actuator housing is installed at the bottom of the valve body (1), wherein the actuator housing comprises an upper housing (2) and a lower housing (3), and a sealing portion is installed on the lower housing (3); The sealing portion comprises a rectangular plate (4), the number of the rectangular plates (4) is two, a guide groove (401) is provided in each of the two rectangular plates (4), a convex block (5) is slidably fitted in each of the two guide grooves (401), a spring (6) is installed in the guide groove (401), two ends of the spring (6) are respectively connected to the convex block (5) and the inner wall of the guide groove (401), and a first U-shaped ring (7) and a second U-shaped ring (8) are respectively installed on the two convex blocks (5); Limiting blocks (9) are installed at both ends of the second U-shaped ring (8), and the two limiting blocks (9) are provided with a clamping groove (901). Limiting grooves (703) cooperating with the limiting blocks (9) are provided in both ends of the first U-shaped ring (7), and spring sheets (10) are connected to both ends of the first U-shaped ring (7). The outer surfaces of the two spring sheets (10) are connected with buckles (11), and the buckles (11) are clamped in the buckles (901).

2. A balancing valve waterproof structure according to claim 1, characterized in that: A sealing strip (301) is installed in the lower shell (3), and a sealing groove cooperating with the sealing strip (301) is provided at the bottom of the upper shell (2).

3. A balancing valve waterproof structure according to claim 2, characterized in that: The inner walls of the first U-shaped ring (7) and the second U-shaped ring (8) are both installed with sealing rings (701), and the two sealing rings (701) are in contact with the connection between the lower shell (3) and the upper shell (2).

4. A balancing valve waterproof structure according to claim 3, characterized in that: Two sliding rods (702) are installed at the bottom of the first U-shaped ring (7), and a sliding groove (402) matching with the sliding rods (702) is opened in the rectangular plate (4).

5. The balancing valve waterproof structure according to claim 1, characterized in that: A rectangular block (1001) is installed on the outer surface of the elastic piece (10).

6. A balancing valve waterproof structure according to claim 5, characterized in that: Both ends of the first U-shaped ring (7) are provided with abutments (704), and the two abutments (704) are in contact with corresponding spring sheets (10).

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