An electrically operated regulating valve

Abstract

The utility model discloses a kind of electric regulating valve, including valve and the driver fixedly connected with the valve, the driver is used to control valve opening and closing;The valve includes valve body and the sealing cover connected with the valve body, the cavity is formed between the valve body and sealing cover, the cavity is communicated with air inlet and air outlet, movable valve stem is equipped in the cavity, the valve stem outside is equipped with bellows, the bellows one end is connected sealing cover, the other end is connected valve stem, the valve stem is equipped with valve needle far from the driver side, the valve needle is ladder type, the valve needle up and down movement is used to open / close the intercommunication passage between air inlet and air outlet.The utility model can electrically regulate flow size, accurately control flow output.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to an electric regulating valve. Background Technology

[0002] Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow and pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automated control systems, exhibiting a wide variety of types and specifications. Based on their function, they can be categorized into shut-off valves, check valves, regulating valves, etc.

[0003] In some valves, a motor driver is usually added to realize the automatic opening and closing of the valve. However, for conventional electric valves, there are only two states: on and off. For the gas in the pipeline, it is not possible to accurately adjust the amount of gas output, which is inconvenient to use. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An electrically controlled regulating valve includes a valve and a actuator fixedly connected to the valve, the actuator being used to control the opening and closing of the valve; The valve includes a valve body and a sealing cover connected to the valve body. A cavity is formed between the valve body and the sealing cover. The cavity connects an air inlet and an air outlet. A movable valve stem is provided in the cavity. A bellows is sleeved on the outside of the valve stem. One end of the bellows is connected to the sealing cover, and the other end is connected to the valve stem. A valve needle is provided on the side of the valve stem away from the actuator. The valve needle is stepped. The valve needle moves up and down to open / close the connecting channel between the air inlet and the air outlet.

[0005] Furthermore, the actuator includes a driving element and a connecting seat. One end of the connecting seat is connected to the valve body, and the other end is connected to the driving element. The output end of the driving element is connected to a screw. The screw passes through the connecting seat and is threadedly connected to the valve stem. When the screw rotates, it can drive the valve stem to move up / down.

[0006] Furthermore, the actuator also includes an indicator needle, which is fixedly connected to the valve stem. The connecting seat has a groove for accommodating the movement of the indicator needle, and the indicator needle is used to indicate the position of the valve stem.

[0007] Furthermore, the valve needle and valve stem are detachably connected by threads.

[0008] Furthermore, a washer is fixed on the valve stem, and a flange matching the washer is provided inside the valve body, forming a seal between the washer and the flange.

[0009] Furthermore, the driving element is a motor.

[0010] The beneficial effects of this utility model are: 1. The valve needle of this utility model is stepped, and a screw is used to precisely drive the insertion and withdrawal distance of the valve needle. With the stepped valve needle, the opening size can be precisely controlled, thereby adjusting the gas flow rate.

[0011] 2. In this utility model, an indicator needle is fixedly connected to the valve stem. The indicator needle moves with the valve stem, so the valve needle's closing state inside the valve can be easily observed, and the gas flow rate can be quickly assessed. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a utility model Figure 2 A magnified view of part A; Figure 4 This is a utility model Figure 2 A magnified view of part B; Figure 5 This is a schematic diagram of the second embodiment of the present utility model; Explanation of reference numerals in the attached figures: 1. Valve; 11. Valve body; 111. Air inlet; 112. Air outlet; 12. Sealing cap; 13. Valve stem; 14. Bellows; 15. Valve needle; 16. Washer; 17. Flange; 2. Driver; 21. Drive element; 22. Connector; 23. Indicator; 24. Screw. Detailed Implementation

[0014] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Specific Implementation Example 1: like Figures 1 to 4As shown, an electric regulating valve includes a valve 1 and a driver 2 fixedly connected to the valve 1, the driver 2 being used to control the opening and closing of the valve 1; The valve 1 includes a valve body 11 and a sealing cover 12 connected to the valve body 11. A cavity is formed between the valve body 11 and the sealing cover 12, connecting an air inlet 111 and an air outlet 112. A movable valve stem 13 is provided within the cavity. A bellows 14 is fitted around the valve stem 13, with one end connected to the sealing cover 12 and the other end connected to the valve stem 13. A valve needle 15 is provided on the side of the valve stem 13 away from the actuator 2. The valve needle 15 is stepped and moves up and down to open / close the communication channel between the air inlet 111 and the air outlet 112. It is understood that the valve needle 15 and the valve stem 13 are detachably connected by threads. Replacing the valve needle 15 allows for quick adjustment and replacement. A washer 16 is also fixed on the valve stem 13. A flange 17 matching the washer 16 is provided inside the valve body 11, forming a seal between the washer 16 and the flange 17.

[0016] Furthermore, the actuator 2 includes a driving element 21 and a connecting seat 22. One end of the connecting seat 22 is connected to the valve body 11, and the other end is connected to the driving element 21. A screw 24 is connected to the output end of the driving element 21. The screw 24 passes through the connecting seat 22 and is threadedly connected to the valve stem 13. When the screw 24 rotates, it can drive the valve stem 13 to move up / down. For ease of use, the actuator 2 also includes an indicator needle 23, which is fixedly connected to the valve stem 13. The connecting seat 22 has a groove for accommodating the movement of the indicator needle 23. The indicator needle 23 is used to indicate the position of the valve stem 13. The driving element 21 is a motor. Specific Implementation Example 2: In this utility model, a straight-through type structure of valve body 11 is provided. The rest of the structure is not changed, so it will not be described again. In this embodiment, after the gas enters from the left air inlet 111, it passes through the sealing hole of valve needle 15 and is discharged from the air outlet 112.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electric regulating valve, characterized in that: Includes a valve (1) and a actuator (2) fixedly connected to the valve (1), the actuator (2) being used to control the opening and closing of the valve (1); The valve (1) includes a valve body (11) and a sealing cover (12) connected to the valve body (11). A cavity is formed between the valve body (11) and the sealing cover (12). The cavity connects the air inlet (111) and the air outlet (112). A movable valve stem (13) is provided in the cavity. A bellows (14) is sleeved on the outside of the valve stem (13). One end of the bellows (14) is connected to the sealing cover (12), and the other end is connected to the valve stem (13). A valve needle (15) is provided on the side of the valve stem (13) away from the actuator (2). The valve needle (15) is stepped. The valve needle (15) moves up and down to open / close the connecting channel between the air inlet (111) and the air outlet (112).

2. The electric regulating valve according to claim 1, characterized in that: The driver (2) includes a driving element (21) and a connecting seat (22). One end of the connecting seat (22) is connected to the valve body (11), and the other end is connected to the driving element (21). The output end of the driving element (21) is connected to a screw (24). The screw (24) passes through the connecting seat (22) and is threadedly connected to the valve stem (13). When the screw (24) rotates, it can drive the valve stem (13) to move up / down.

3. The electric regulating valve according to claim 2, characterized in that: The driver (2) also includes an indicator needle (23), which is fixedly connected to the valve stem (13). The connecting seat (22) is provided with a groove for accommodating the movement of the indicator needle (23). The indicator needle (23) is used to indicate the position of the valve stem (13).

4. The electric regulating valve according to claim 1, characterized in that: The valve needle (15) and the valve stem (13) are detachably connected by threads.

5. The electric regulating valve according to claim 1, characterized in that: A washer (16) is also fixed on the valve stem (13), and a flange (17) matching the washer (16) is provided inside the valve body (11), and a seal is formed between the washer (16) and the flange (17).

6. The electric regulating valve according to claim 2, characterized in that: The driving element (21) is a motor.

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