Rotary disc valve

Abstract

The utility model discloses a rotary disc valve, and belongs to the technical field of rotary disc valves. A rotary disc valve comprises a valve body, a valve disc, a rotating shaft and a connecting rod, the valve disc is rotationally installed in the valve body through the rotating shaft and the connecting rod, the valve disc is slidably installed at the end of the connecting rod in the conveying direction of the valve body, a transmission structure is arranged in the valve body, one end of the transmission structure abuts against the valve disc, and the other end of the transmission structure abuts against the connecting rod. The operating part at the other end is positioned outside the valve body; the device has the advantages of being convenient to operate and high in practicability.

Description

Technical Field

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

[0002] In the existing rotary disc valve technology, a spring is usually set at the connecting rod. Under the external support force of the spring, the valve disc is under pressure and always close to the valve seat sealing surface. The valve disc can move vertically and continuously perform self-polishing and self-grinding, thereby improving the sealing performance and compensating for the thermal expansion and contraction of the internal components of the silicon valve.

[0003] The utility model with the announcement number CN217207828U discloses a rotary disc valve, including a left valve body and a right valve body, a valve seat is arranged between the left valve body and the right valve body, a valve disc is installed under the valve seat, the valve disc includes a valve disc body, the valve disc body is sleeved on the connecting rod, a spring, a cushion block and a bolt are arranged inside the connecting rod, and the valve disc is driven to rotate by a pneumatic actuator. On the basis of the prior art, the utility model adds a cushion block and a hexagon socket set bolt, so that by rotating the hexagon socket set bolt, the weak spring can regain the compression function and regain sufficient external support force, which can be achieved without replacing the spring, so that the valve disc is always tightly attached to the valve seat sealing surface, ensuring the valve cut-off performance, thereby achieving the purpose of long-term and continuous use of the valve body.

[0004] However, in the above solution, the valve disc, connecting rod, and fixing bolts are all located inside the valve body. When the spring needs to be tightened by adjusting the fixing bolts, the disc valve needs to be disassembled first. The operation process is cumbersome and the practicality is average. Utility Model Content

[0005] The utility model aims to solve the problem that the rotary disc valve in the prior art needs to be disassembled when adjusting the fastening bolts, and proposes a rotary disc valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rotary disc valve comprises a valve body, a valve disc, a rotating shaft and a connecting rod. The valve disc is rotatably mounted inside the valve body via the rotating shaft and the connecting rod. The valve disc is slidably mounted on the end of the connecting rod along the conveying direction of the valve body. A transmission structure is provided inside the valve body. One end of the transmission structure abuts against the valve disc, and an operating part at the other end is located outside the valve body.

[0008] Furthermore, the transmission structure includes a first channel opened inside the rotating shaft and a second channel opened inside the connecting rod corresponding to the first channel. Balls abutting the valve disc are arranged inside the first channel and the second channel. An adjustment bolt for squeezing the ball is arranged at one end of the first channel away from the second channel.

[0009] Furthermore, an elastic member groove is arranged at one end of the valve disc close to the connecting rod, an elastic member is arranged inside the elastic member groove, and the elastic member is located between the valve disc and the ball.

[0010] Furthermore, a first sliding block is provided between the elastic member and the ball along the extension and contraction direction of the elastic member.

[0011] Furthermore, an arc-shaped groove is provided at one end of the first sliding block close to the ball.

[0012] Furthermore, a second sliding block is arranged between the adjusting bolt and the ball along the axial direction of the adjusting bolt.

[0013] Furthermore, a pressure sensing element is provided on the end surface of the second sliding block close to the adjusting bolt.

[0014] Compared with the prior art, the utility model provides a rotary disc valve, which has the following beneficial effects:

[0015] The utility model discloses a rotary disc valve. When in use, the operating part directly operates the transmission mechanism to press the valve disc tightly, so that the valve disc is pressed tightly at the pipe opening inside the valve body. Compared with the prior art, when pressing the valve disc, the valve body needs to be disassembled. The utility model has simple operation and stronger practicality.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic top view of the overall structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model in the main viewing direction;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement of part A;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure of part B.

[0021] In the figure:

[0022] 1. Valve body; 2. Valve disc; 3. Rotating shaft; 4. Adjusting bolt; 5. Driving element; 6. Crank; 7. First channel; 8. Second channel; 9. Ball; 10. Connecting rod; 11. Elastic member groove; 12. Elastic member; 13. First slider; 14. Second slider; 15. Pressure sensing element. DETAILED DESCRIPTION

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

[0024] Reference Figure 1-4 The utility model discloses a rotary disc valve, comprising a valve body 1, a valve disc 2, a rotating shaft 3, and a connecting rod 10. The valve disc 2 is rotatably installed at the pipe mouth position inside the valve body 1 through the rotating shaft 3 and the connecting rod 10. Specifically, the rotating shaft 3 is rotatably installed on one side of the pipeline on the valve body 1. One end of the rotating shaft 3 located on the outside of the valve body 1 is connected to one end of a driving element 5 through a crank 6. The driving element 5 is a cylinder, a hydraulic cylinder or an electric cylinder. One end of the rotating shaft 3 located on the inside of the valve body 1 is connected to the valve disc 2 through the connecting rod 10. The driving element 5 drives the valve disc 2 to rotate around the rotating shaft 3 through the crank 6, the rotating shaft 3, and the connecting rod 10.

[0025] The valve disc 2 is slidably installed at the end of the connecting rod 10 along the conveying direction of the valve body 1. A transmission structure is installed inside the valve body 1. One end of the transmission structure is in contact with the valve disc 2, and the operating part of the other end is located outside the valve body 1. When in use, the transmission structure is operated by the operating part to press the valve disc 2, so that the valve disc 2 is displaced toward the pipe mouth inside the valve body 1, thereby pressing the valve disc 2 against the pipe mouth.

[0026] The transmission structure includes a first channel 7 opened inside the rotating shaft 3, and a second channel 8 opened inside the connecting rod 10 and corresponding to the first channel 7. One end of the first channel 7 is connected to the second channel 8, and the other end is opened on the rotating shaft 3 at a position outside the valve body 1. One end of the second channel 8 is connected to the first channel 7, and the outlet of the other end is connected to the valve disc 2. Balls 9 abutting against the valve disc 2 are installed inside the first channel 7 and the second channel 8. An adjusting bolt 4 for squeezing the ball 9 is installed at one end of the first channel 7 away from the second channel 8. The inner diameters of the first channel 7 and the second channel 8 are the same as the outer diameters of the ball 9. The ball 9 rolls in the first channel 7 and the second channel 8. The adjusting bolt 4 is the operating part. When in use, the adjusting bolt 4 is tightened to squeeze the ball 9, and the multiple balls 9 in the first channel 7 and the second channel 8 form a dynamic connection structure to squeeze the valve disc 2 and press it against the pipe mouth.

[0027] An elastic member groove 11 is installed at one end of the valve disc 2 close to the connecting rod 10, and an elastic member 12 is installed inside the elastic member groove 11. The elastic member 12 can be a spring, a spring sheet or other elastic structure that meets the structural and elastic requirements. The elastic member 12 is located between the valve disc 2 and the ball 9. The ball 9 squeezes the elastic member 12. After the elastic member 12 is elastically deformed, the valve disc 2 is pressed against the pipe mouth. The elastic member 12 prevents the valve disc 2 and the ball 9 from being rigidly connected.

[0028] A first slider 13 is arranged between the elastic member 12 and the ball 9 along the expansion and contraction direction of the elastic member 12. The first slider 13 slides along the elastic expansion and contraction direction of the elastic member 12. The first slider 13 can be installed in the elastic member groove 11 or in the second channel 8. The present application is installed in the second channel 8. The ball 9 squeezes and pushes the first slider 13 to slide. The first slider 13 squeezes the elastic member 12 to cause elastic deformation. The first slider 13 makes the connection between the ball 9 and the elastic member 12 more stable.

[0029] An arc groove is processed at one end of the first slider 13 close to the ball 9. When the ball 9 contacts the first slider 13, a part of the ball 9 is located in the arc groove, thereby increasing the contact area between the ball 9 and the first slider 13.

[0030] A second sliding block 14 is installed between the adjusting bolt 4 and the ball 9 along the axial direction of the adjusting bolt 4 , and the second sliding block 14 increases the stability of the connection between the adjusting bolt 4 and the ball 9 .

[0031] A pressure sensing element 15 is arranged on the end surface of the second slider 14 close to the adjusting bolt 4. The pressure sensing element 15 can be a pressure sensor. When the adjusting bolt 4 is tightened, the adjusting bolt 4 squeezes the elastic member 12 and the valve disc 2. The pressure between the adjusting bolt 4 and the ball 9 is measured by the pressure sensing element 15, so that the tightening condition of the valve disc 2 can be directly observed from the outside.

[0032] Working principle: When in use, tighten the adjusting bolt 4, the adjusting bolt 4 squeezes the second slider 14, the second slider 14 squeezes the ball 9, the ball 9 squeezes the first slider 13, the first slider 13 squeezes the elastic member 12, and the elastic member 12 squeezes the valve disc 2, thereby pressing the valve disc 2 against the pipe mouth. In the process of tightening the adjusting bolt 4, the pressure between the adjusting bolt 4 and the second slider 14 can be detected by the pressure sensing element 15. It is sufficient to meet the predetermined pressure value. When the detected pressure value does not reach the predetermined pressure value, continue to tighten the adjusting bolt 4 to the predetermined pressure value.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rotary disc valve, comprising a valve body (1), a valve disc (2), a rotating shaft (3), and a connecting rod (10), wherein the valve disc (2) is rotatably mounted inside the valve body (1) via the rotating shaft (3) and the connecting rod (10), and characterized in that: The valve disc (2) is slidably mounted on the end of the connecting rod (10) along the conveying direction of the valve body (1); a transmission structure is provided inside the valve body (1); one end of the transmission structure abuts against the valve disc (2); and an operating portion at the other end is located outside the valve body (1).

2. A rotary disc valve according to claim 1, characterized in that: The transmission structure comprises a first channel (7) opened inside the rotating shaft (3), and a second channel (8) opened inside the connecting rod (10) and corresponding to the first channel (7); balls (9) abutting against the valve disc (2) are arranged inside the first channel (7) and the second channel (8); and an adjustment bolt (4) for squeezing the balls (9) is arranged at one end of the first channel (7) away from the second channel (8).

3. A rotary disc valve according to claim 2, characterized in that: An elastic member groove (11) is provided at one end of the valve disc (2) close to the connecting rod (10), an elastic member (12) is provided inside the elastic member groove (11), and the elastic member (12) is located between the valve disc (2) and the ball (9).

4. A rotary disc valve according to claim 3, characterized in that: A first sliding block (13) is provided between the elastic member (12) and the ball (9) along the extension and retraction direction of the elastic member (12).

5. A rotary disc valve according to claim 4, characterized in that: An arc-shaped groove is provided at one end of the first sliding block (13) close to the ball (9).

6. A rotary disc valve according to claim 2, characterized in that: A second sliding block (14) is arranged between the adjusting bolt (4) and the ball (9) along the axial direction of the adjusting bolt (4).

7. A rotary disc valve according to claim 6, characterized in that: A pressure sensing element (15) is provided on the end surface of the second sliding block (14) close to the adjusting bolt (4).

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