Valve flow adjusting device

Abstract

The utility model relates to the technical field of valve adjustment, and discloses a valve flow adjusting device which is suitable for a valve body, the valve body comprises an actuator, an adjusting screw is connected in the actuator in a threaded mode, the valve flow adjusting device comprises a shell, the shell comprises an upper shell body and a lower shell body, and an adjusting rod penetrates through the shell. A clamping part matched with the adjusting screw is arranged at the lower end of the adjusting rod, a sealing ring is arranged between the adjusting rod and the lower shell, an air inlet flow channel is formed in one side of the lower shell, and the air inlet flow channel is communicated with an air outlet flow channel. According to the valve flow adjusting device, the clamping part at the lower end of the adjusting rod is clamped into the adjusting screw in the actuator, the adjusting rod is rotated to adjust the height of the adjusting screw, in the adjusting process, an external driving gas source introduces driving gas into the gas inlet channel, and the gas downwards flows into the actuator from the gas outlet channel; therefore, the height of the adjusting screw can be debugged without cutting off the driving air source, the operation is simple and convenient, and the operation time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of valve regulation, in particular to a regulating valve flow meter. Background Art

[0002] A valve is a device used to control the flow of fluids (liquids, gases, powders, etc.), usually used in pipeline systems. The valve can control the passage of the fluid by opening or closing, thereby adjusting and controlling the parameters of the fluid flow, pressure, temperature, etc. The valve is usually composed of a valve body, a valve cover, a valve core (or valve plate), a seal, an actuator, and other components. Its working principle is to change the position of the valve core so that the fluid can flow through or be blocked. According to different working principles and structural characteristics, valves can be divided into many types, including ball valves, gate valves, butterfly valves, check valves, regulating valves, etc.

[0003] In existing valves, an adjusting screw is usually threaded in the actuator. The height of the adjusting screw can limit the flow rate of the valve. When the adjusting screw is adjusted upward, the space for the valve to open increases and the flow rate will also increase. Conversely, when the adjusting screw is adjusted downward, the space for the valve to open decreases and the flow rate will also decrease. During the use of the valve, the flow rate needs to be adjusted multiple times according to the actual situation. When adjusting, the operator first cuts off the driving air source entering the valve actuator, then unscrews the air source connector and uses an Allen wrench to continuously adjust the height of the adjusting screw to achieve the required flow rate standard. This process is very cumbersome, not only inconvenient but also time-consuming. Utility Model Content

[0004] The purpose of the utility model is to provide a regulating valve flow meter to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a regulating valve flow meter, suitable for a valve body, the valve body includes an actuator, the actuator is internally threaded with an adjusting screw, including: a shell, the shell includes an upper shell and a lower shell, an adjusting rod passes through the shell, a clamping portion adapted to the adjusting screw is provided at the lower end of the adjusting rod, a sealing ring is provided between the adjusting rod and the lower shell, an inlet flow channel is opened on one side of the lower shell, and the inlet flow channel is connected to an outlet flow channel.

[0006] Preferably, the adjusting rod sleeve is provided with a rotating rod.

[0007] Preferably, a fastening screw is fixed between the adjusting rod and the rotating rod.

[0008] Preferably, the rotating rod sleeve is provided with a spring.

[0009] Preferably, the rotating rod is fixedly mounted with a handle.

[0010] Preferably, the cross-sectional shape of the engaging portion is a regular hexagon.

[0011] Preferably, there is a gap between the outlet air passage and the adjusting rod.

[0012] Preferably, the sealing ring is located above the intake air passage.

[0013] Preferably, the upper shell is fixedly connected to the lower shell.

[0014] Preferably, the inlet air duct is connected to an external driving air source.

[0015] The regulating valve flow meter has the following beneficial effects:

[0016] The regulating valve flow meter inserts the engaging part at the lower end of the regulating rod into the regulating screw in the actuator, and the regulating rod is rotated to adjust the height of the regulating screw. During the adjustment process, an external driving gas source introduces driving gas into the inlet flow channel, and a sealing ring is sealed at the upper part. The gas flows downward from the outlet flow channel to the adjusting screw and finally reaches the actuator, thereby realizing the adjustment of the height of the adjusting screw without cutting off the driving gas source. The operation is simple and convenient, and the operation time is greatly shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a valve body in the prior art;

[0018] Figure 2 It is a cross-sectional view of a valve body in the prior art;

[0019] Figure 3 for Figure 2 Schematic diagram of the middle adjustment screw;

[0020] Figure 4 A three-dimensional diagram of a regulating valve flow meter provided in an embodiment of the present application;

[0021] Figure 5 A cross-sectional view of a regulating valve flow meter provided in an embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the assembly of the regulating valve flow meter and the valve body.

[0023] In the figure: 1. valve body; 11. actuator; 2. adjusting screw; 21. adjusting part; 22. through hole; 3. upper shell; 4. lower shell; 41. inlet flow channel; 42. outlet flow channel; 5. rotating rod; 6. fastening screw; 7. adjusting rod; 71. engaging part; 8. handle; 9. sealing ring; 10. spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 3 As shown, the utility model provides a regulating valve flow meter, which is suitable for a valve body 1. The valve body 1 includes an actuator 11. The actuator 11 is internally threaded with an adjusting screw 2. An adjusting portion 21 is provided on the top of the adjusting screw 2. In the prior art, the adjusting screw 2 is a universal component, and its adjusting portion 21 is usually hexagonal. A through hole 22 is provided below the adjusting portion 21, and the driving gas flows into the actuator 11 from the through hole 22.

[0026] like Figure 4 As shown, the regulating valve flow meter includes: a shell, the shell includes an upper shell 3 and a lower shell 4, and the upper shell 3 and the lower shell 4 are fixedly connected.

[0027] Among them, Figure 5 As shown, an adjusting rod 7 passes through the shell, and a snap-fitting portion 71 adapted to the adjusting screw 2 is provided at the lower end of the adjusting rod 7. The cross-sectional shape of the snap-fitting portion 71 is a regular hexagon, which can be adapted to the universal adjusting screw 2. A sealing ring 9 is provided between the adjusting rod 7 and the lower shell 4.

[0028] Specifically, the adjusting rod 7 is sleeved with a rotating rod 5, the rotating rod 5 is slidably connected to the upper shell 3, a fastening screw 6 is fixed between the adjusting rod 7 and the rotating rod 5, the rotating rod 5 is sleeved with a spring 10, and a handle 8 is fixedly installed on the top of the rotating rod 5.

[0029] In this embodiment, if Figure 6 As shown, the engaging portion 71 at the lower end of the adjusting rod 7 is inserted into the adjusting screw 2 in the actuator 11, the engaging portion 71 cooperates with the adjusting portion 21, the handle 8 is rotated, the handle 8 drives the rotating rod 5 to rotate, the rotating rod 5 drives the adjusting rod 7 to rotate, the adjusting rod 7 adjusts the height of the adjusting screw 2, and the valve body 1 adjusts the flow rate.

[0030] like Figure 5 As shown, an inlet flow channel 41 is opened on one side of the lower shell 4, and the inlet flow channel 41 is connected to an external driving air source. The sealing ring 9 is located above the inlet flow channel 41 to prevent the driving gas introduced by the driving air source from leaking into the upper shell 3. The inlet flow channel 41 is connected to an outlet flow channel 42, and there is a gap between the outlet flow channel 42 and the adjustment rod 7.

[0031] In this embodiment, if Figure 6As shown, an external driving gas source introduces driving gas into the inlet flow channel 41 , and the sealing ring 9 seals at the top. The gas flows downward from the gap between the outlet flow channel 42 and the adjusting rod 7 to the adjusting screw 2 , and finally reaches the actuator 11 .

[0032] In the present application, during the process of adjusting the height of the adjusting screw 2 by the handle 8, the driving gas will continue to flow into the actuator 11 in the valve body 1, satisfying the working condition of pressure regulation, thereby realizing the adjustment of the height of the adjusting screw 2 without cutting off the driving gas source. The operation is simple and convenient, which greatly shortens the operation time and makes the flow adjustment process of the valve body 1 faster.

[0033] Working principle: The engaging portion 71 at the lower end of the adjusting rod 7 is inserted into the adjusting screw 2 in the actuator 11, and the handle 8 is turned to rotate the adjusting rod 7. The adjusting rod 7 adjusts the height of the adjusting screw 2. During the debugging process, an external driving gas source introduces driving gas into the inlet flow channel 41, and the gas flows downward from the gap between the outlet flow channel 42 and the adjusting rod 7 to the adjusting screw 2, and finally reaches the actuator 11.

[0034] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A regulating valve flow meter, suitable for a valve body (1), the valve body (1) comprising an actuator (11), the actuator (11) being internally threadedly connected with an adjusting screw (2), characterized in that: include: A housing, the housing comprising an upper housing (3) and a lower housing (4); The housing has an adjusting rod (7) passing through it, a clamping portion (71) adapted to fit the adjusting screw (2) is provided at the lower end of the adjusting rod (7), and a sealing ring (9) is provided between the adjusting rod (7) and the lower housing (4); An inlet flow channel (41) is provided on one side of the lower shell (4), and the inlet flow channel (41) is connected to an outlet flow channel (42).

2. A regulating valve flow meter according to claim 1, characterized in that: The adjusting rod (7) is sleeved with a rotating rod (5).

3. A regulating valve flow meter according to claim 2, characterized in that: A fastening screw (6) is fixed between the adjusting rod (7) and the rotating rod (5).

4. A regulating valve flow meter according to claim 3, characterized in that: The rotating rod (5) is sleeved with a spring (10).

5. A regulating valve flow meter according to claim 4, characterized in that: The rotating rod (5) is fixedly mounted with a handle (8).

6. A regulating valve flow meter according to claim 1, characterized in that: The cross-sectional shape of the engaging portion (71) is a regular hexagon.

7. The regulating valve flow meter according to claim 1, characterized in that: There is a gap between the outlet flow channel (42) and the adjustment rod (7).

8. The regulating valve flow meter according to claim 1, characterized in that: The sealing ring (9) is located above the intake flow passage (41).

9. The regulating valve flow meter according to claim 1, characterized in that: The upper shell (3) is fixedly connected to the lower shell (4).

10. The regulating valve flow meter according to claim 1, characterized in that: The inlet air channel (41) is connected to an external driving air source.

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