An electric regulating valve

Abstract

The utility model relates to the technical field of regulating valves, and specifically to an electric regulating valve, including a valve body, an upper valve cylinder, a lower valve cylinder and an intermediate ring plate, a first sleeve is inserted in the middle of the bottom end of the lower valve cylinder, a first slide cylinder is longitudinally slidably penetrated in the first sleeve, a lower impeller is rotatably provided at the top end of the first slide cylinder, and a plurality of first scrapers are provided on the peripheral side wall of the lower impeller, a second sleeve is inserted in the middle of the top end of the upper valve cylinder, a second slide cylinder is longitudinally slidably penetrated in the second sleeve, an upper impeller is rotatably sleeved in the middle of the second connecting column, and a plurality of second scrapers are provided on the peripheral side wall of the upper impeller. The utility model drives the lower impeller and the upper impeller to rotate through the flow impact of the medium, and then drives the first scraper and the second scraper to rotate synchronously, thereby completing the scraping and cleaning of the inner peripheral side walls of the lower valve cavity and the upper valve cavity, and effectively avoiding the problem of surface adhesion on the surface of the medium flow part of the valve body caused by impurities or solid particles during long-term use.

Description

Technical Field

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

[0002] A regulating valve is also called a control valve. In the field of industrial automation process control, it is a final control element that receives the control signal output by the regulating control unit and uses power operation to change process parameters such as medium flow, pressure, temperature and liquid level. It is mainly used in oil or gas pipelines such as petroleum, natural gas, and chemicals as a pressure or flow control device. An electric regulating valve is an important execution unit instrument in industrial automation process control. Simply put, it uses an electric actuator to control the valve to open and close the valve. It can be roughly divided into two parts, the upper part is the electric actuator, and the lower part is the valve.

[0003] Existing electric regulating valves generally use electric actuators to control the movement of the valve core, thereby regulating the opening, closing and flow rate of the valve. However, during actual use, impurities or solid particles are inevitably present in the circulating medium, resulting in surface adhesion on the surface of the main medium flow parts of the valve body during long-term use. In severe cases, the main medium flow parts of the valve body may be blocked, thereby reducing the diameter of the medium flow channel of the valve body, affecting the flow of the medium in the valve body, and making the operation of the electric actuator to control the valve core to regulate the flow rate ineffective.

[0004] Therefore, it is necessary to invent an electric regulating valve to solve the above problems. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the purpose of the utility model is to provide an electric regulating valve, which solves the problem that impurities or solid particles are inevitably present in the circulating medium in the prior art, resulting in surface adhesion on the surface of the main medium circulation part of the valve body during long-term use, and in severe cases, causing blockage of the main medium circulation part of the valve body, thereby reducing the diameter of the medium circulation channel of the valve body, affecting the circulation of the medium in the valve body, and making the operation of the electric actuator controlling the valve core to regulate the circulation volume ineffective.

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

[0007] 1. An electric regulating valve as claimed in claim 1, comprising a valve body, an upper valve cylinder detachably mounted on the top end of the valve body, a lower valve cylinder detachably mounted on the bottom end of the valve body, and an intermediate ring plate which is clamped in the middle of the inner peripheral side wall of the valve body and can divide the internal space of the valve body into an upper valve chamber and a lower valve chamber, wherein a first sleeve is inserted in the middle of the bottom end of the lower valve cylinder, a first sliding cylinder driven by electricity is longitudinally slidably penetrated in the first sleeve, a lower impeller disc which can be driven and rotated by a medium is rotatably arranged at the top end of the first sliding cylinder through a first connecting column, a plurality of first scrapers which can abut and slide against the inner peripheral side wall of the lower valve chamber are arranged on the peripheral side wall of the lower impeller disc, a second sleeve is inserted in the middle of the top end of the upper valve cylinder, a second sliding cylinder driven by electricity is longitudinally slidably penetrated in the second sleeve, a valve core which can close the intermediate ring plate is connected to the bottom end of the second sliding cylinder through a second connecting column, an upper impeller disc which can be driven and rotated by a medium is rotatably sleeved in the middle of the second connecting column, and a plurality of second scrapers which can abut and slide against the inner peripheral side wall of the upper valve chamber are arranged on the peripheral side wall of the upper impeller disc.

[0008] As a preferred solution of the utility model, a medium inlet pipe is installed on the left side of the outer peripheral side wall of the lower valve cylinder, and a medium outlet pipe is installed on the right side of the outer peripheral side wall of the upper valve cylinder.

[0009] As a preferred solution of the utility model, a first electric drive component is installed below the bottom end of the lower valve cylinder, and a first rotatable screw is installed at the output end of the first electric drive component. The first screw thread is penetrated into the first slide cylinder, and first limit strips are extended at symmetrical positions of the outer peripheral side walls of the first slide cylinder, and first limit grooves for longitudinal sliding of the first limit strips are opened at the adapting positions of the inner peripheral side walls of the first sleeve.

[0010] As a preferred solution of the utility model, a second electric drive component is installed above the top of the upper valve cylinder, and a rotatable second screw is installed at the output end of the second electric drive component. The second screw is threadedly penetrated into the second slide cylinder, and second limit strips are extended at symmetrical positions of the outer peripheral side walls of the second slide cylinder, and second limit grooves for longitudinal sliding of the second limit strips are provided at the matching positions of the inner peripheral side walls of the second sleeve.

[0011] As a preferred solution of the utility model, the lower impeller is connected to the corresponding first scraper through multiple first fixing rods on the peripheral side wall, and the upper impeller is connected to the corresponding second scraper through multiple second fixing rods on the peripheral side wall.

[0012] As a preferred solution of the utility model, a through hole is opened in the middle of the intermediate ring plate, and the upper valve cavity is located above the intermediate ring plate;

[0013] When the valve core moves downward to a position closing the through hole in the middle ring plate, the bottom end of the second scraper plate abuts against the top end of the middle ring plate.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] When the medium flows through the valve body, the medium drives the upper impeller to rotate, thereby driving a plurality of second scrapers to slide along the inner peripheral side wall of the upper valve cavity, thereby scraping off impurities or fixed particles that may be adhered to the inner peripheral side wall of the upper valve cavity, so that the cleaning of the inner peripheral side wall of the upper valve cavity is carried out synchronously with the circulation of the medium, and the cleaning of the inner peripheral side wall of the lower valve cavity can be carried out by regularly driving the first slide cylinder to move upward, thereby driving the lower impeller and the first scraper to move upward synchronously to the circulation path of the medium, and then driving the lower impeller to rotate through the circulation impact of the medium, that is, driving a plurality of second scrapers to slide along the inner peripheral side wall of the upper valve cavity. The first scraper scrapes off impurities and solid particles on the inner circumferential side wall of the lower valve cavity, and finally realizes regular cleaning of the inner circumferential side wall of the lower valve cavity. In the utility model, the lower impeller and the upper impeller are driven to rotate by the flow impact of the medium, and then the first scraper and the second scraper are driven to rotate synchronously, thereby completing the scraping and cleaning of the inner circumferential side walls of the lower valve cavity and the upper valve cavity, and effectively avoiding the problem of surface adhesion on the surface of the medium flow part of the valve body caused by impurities or solid particles during long-term use, thereby avoiding the change in the diameter of the medium flow channel of the middle ring plate in the valve body, and under the premise of not affecting the flow of the medium in the valve body, the diameter of the medium flow channel of the valve body is guaranteed to ensure the normal operation of the electric actuator controlling the valve core to regulate the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the plan view of the structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0019] Figure 4 For this utility model Figure 2 Schematic diagram of the overall structure after cutting at AA in the middle.

[0020] Description of reference numerals:

[0021] 1. Valve body; 2. Intermediate ring plate; 3. Upper valve cylinder; 4. Lower valve cylinder; 5. Medium inlet pipe; 6. Medium outlet pipe; 7. First sleeve; 8. First limit groove; 9. First slide cylinder; 10. First screw rod; 11. First connecting column; 12. Lower impeller; 13. First fixed rod; 14. First scraper; 15. Second sleeve; 16. Second limit groove; 17. Second slide cylinder; 18. Second screw rod; 19. Second connecting column; 20. Upper impeller; 21. Second fixed rod; 22. Second scraper; 23. First electric drive member; 24. Second electric drive member; 25. Upper valve cavity; 26. Lower valve cavity; 27. Through hole; 28. Valve core; 29. ​​First limit strip; 30. Second limit strip. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0023] The utility model provides Figure 1-4 The electric regulating valve shown in the figure comprises a valve body 1, an upper valve cylinder 3 detachably mounted on the top end of the valve body 1, a lower valve cylinder 4 detachably mounted on the bottom end of the valve body 1, and an intermediate ring plate 2 which is clamped in the middle of the inner peripheral side wall of the valve body 1 and can divide the internal space of the valve body 1 into an upper valve chamber 25 and a lower valve chamber 26. A first sleeve 7 is inserted in the middle of the bottom end of the lower valve cylinder 4, and a first slide cylinder 9 driven by electricity is longitudinally slidably penetrated in the first sleeve 7. A lower impeller 12 which can be rotated by the medium is rotatably arranged at the top end of the first slide cylinder 9 through a first connecting column 11. A plurality of first scrapers 14 which can abut and slide against the inner peripheral side wall of the lower valve chamber 26 are arranged on the peripheral side wall of the lower impeller 12. A second sleeve 15 is inserted in the middle, and a second slide cylinder 17 driven by electricity is longitudinally slidably penetrated in the second sleeve 15. The bottom end of the second slide cylinder 17 is connected to a valve core 28 that can close the middle ring plate 2 through a second connecting column 19. An upper impeller 20 that can be rotated by the medium is rotatably sleeved in the middle of the second connecting column 19. A plurality of second scrapers 22 that can abut and slide against the inner side wall of the upper valve cavity 25 are arranged on the peripheral wall of the upper impeller 20. The first scraper 14 and the second scraper 22 can adapt to the size of the inner side wall of the valve body 1, so that the first scraper 14 and the second scraper 22 can fit and abut against the inner side wall of the valve body 1, which is convenient for the subsequent scraping and removal of impurities or solid particles.

[0024] A medium inlet pipe 5 is installed on the left side of the outer peripheral side wall of the lower valve cylinder 4, and a medium outlet pipe 6 is installed on the right side of the outer peripheral side wall of the upper valve cylinder 3. The medium inlet pipe 5 can transport the medium that needs to flow into the valve body 1, and after being regulated by the electric control valve, the medium is discharged from the medium outlet pipe 6 and continues to flow.

[0025] A first electric drive component 23 is installed below the bottom end of the lower valve cylinder 4, and a rotatable first screw 10 is installed at the output end of the first electric drive component 23. The first screw 10 is threadedly inserted into the first slide cylinder 9, and the first limit strips 29 are extended at symmetrical positions on the outer peripheral side walls of the first slide cylinder 9. The first limit grooves 8 for the longitudinal sliding of the first limit strips 29 are opened at the matching positions on the inner peripheral side walls of the first sleeve 7. The first electric drive component 23 serves as an electric actuator for driving the first screw 10 to rotate. By driving the first screw 10 to rotate, the first slide cylinder 9 is forced to slide longitudinally along the first sleeve 7 under the limitation of the first limit groove 8, thereby changing the longitudinal position of the lower impeller 12 in the lower valve cavity 26.

[0026] A second electric drive component 24 is installed above the top of the upper valve cylinder 3, and a rotatable second screw 18 is installed at the output end of the second electric drive component 24. The second screw 18 is threadedly inserted into the second slide cylinder 17, and second limit strips 30 are extended at symmetrical positions on the outer peripheral side walls of the second slide cylinder 17. Second limit grooves 16 for longitudinal sliding of the second limit strips 30 are provided at the matching positions on the inner peripheral side walls of the second sleeve 15. The second electric drive component 24 serves as an electric actuator for rotating the second screw 18. By driving the second screw 18 to rotate, the second slide cylinder 17 is forced to move longitudinally along the second sleeve 15 under the limitation of the second limit groove 16, thereby changing the longitudinal position of the valve core 28 and the upper impeller 20 to respectively adjust the flow area of ​​the through hole 27 and the longitudinal position of the second scraper 22.

[0027] The lower impeller 12 is connected to the corresponding first scraper 14 through multiple first fixing rods 13 on the peripheral side wall, and the upper impeller 20 is connected to the corresponding second scraper 22 through multiple second fixing rods 21 on the peripheral side wall. The existence of the first fixing rods 13 and the second fixing rods 21 can prevent the lower impeller 12 and the upper impeller 20 from having too large diameters and affecting the flow of the medium.

[0028] A through hole 27 is opened in the middle of the middle ring plate 2, and the upper valve cavity 25 is located above the middle ring plate 2;

[0029] When the valve core 28 moves down to the position of closing the through hole 27 in the middle ring plate 2 , the bottom end of the second scraper 22 abuts against the top end of the middle ring plate 2 .

[0030] In the present invention, when the second slide cylinder 17 moves downward to control the valve core 28 to open the middle ring plate 2 with different flow rates, the upper impeller 20 moves downward synchronously with the second slide cylinder 17 and the valve core 28, that is, drives the second scraper 22 to move downward synchronously. When the medium flows in the valve body 1, the medium drives the upper impeller 20 to rotate, thereby driving multiple second scrapers 22 to slide along the inner peripheral side wall of the upper valve cavity 25, thereby scraping off impurities or fixed particles that may be adhered to the inner peripheral side wall of the upper valve cavity 25, so that the cleaning of the inner peripheral side wall of the upper valve cavity 25 is carried out synchronously with the circulation of the medium, and the cleaning of the inner peripheral side wall of the lower valve cavity 26 can be carried out by regularly driving the first slide cylinder 9 to move upward, thereby driving the lower impeller 12 and the first scraper 14 to move upward synchronously to the flow path of the medium, and then driving the lower impeller 12 to rotate through the flow impact of the medium. The utility model drives multiple first scrapers 14 to scrape impurities and solid particles from the inner circumferential side wall of the lower valve cavity 26, and finally realizes regular cleaning of the inner circumferential side wall of the lower valve cavity 26. In the utility model, the lower impeller 12 and the upper impeller 20 are driven to rotate by the flow impact of the medium, and then the first scraper 14 and the second scraper 22 are driven to rotate synchronously, so as to complete the scraping and cleaning of the inner circumferential side walls of the lower valve cavity 26 and the upper valve cavity 25, and effectively avoid the problem of surface adhesion on the surface of the medium flow part of the valve body 1 caused by impurities or solid particles during long-term use, thereby avoiding the change in the diameter of the medium flow channel of the middle ring plate 2 in the valve body 1. Under the premise of not affecting the flow of the medium in the valve body 1, the diameter of the medium flow channel of the valve body 1 is ensured to ensure the normal operation of the electric actuator controlling the valve core 28 to regulate the flow rate.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An electric regulating valve, characterized in that: The invention comprises a valve body (1), an upper valve cylinder (3) detachably mounted on the top end of the valve body (1), a lower valve cylinder (4) detachably mounted on the bottom end of the valve body (1), and an intermediate ring plate (2) which is clamped to the middle of the inner peripheral side wall of the valve body (1) and can divide the internal space of the valve body (1) into an upper valve chamber (25) and a lower valve chamber (26), wherein a first sleeve (7) is inserted into the middle of the bottom end of the lower valve cylinder (4), a first slide cylinder (9) driven by electricity is longitudinally slidably penetrated in the first sleeve (7), a lower impeller (12) which can be rotated by a medium is rotatably arranged at the top end of the first slide cylinder (9) through a first connecting column (11), and the circumferential side wall of the lower impeller (12) is A plurality of first scrapers (14) are provided which can abut against and slide against the inner peripheral side wall of the lower valve cavity (26); a second sleeve (15) is inserted into the middle of the top end of the upper valve cylinder (3); a second slide cylinder (17) driven by electricity is longitudinally slidably penetrated in the second sleeve (15); a valve core (28) capable of closing the intermediate ring plate (2) is connected to the bottom end of the second slide cylinder (17) through a second connecting column (19); an upper impeller (20) which can be rotated by a medium is rotatably sleeved in the middle of the second connecting column (19); and a plurality of second scrapers (22) which can abut against and slide against the inner peripheral side wall of the upper valve cavity (25) are provided on the peripheral side wall of the upper impeller (20).

2. The electric regulating valve according to claim 1, characterized in that: A medium inlet pipe (5) is installed on the left side of the outer peripheral side wall of the lower valve cylinder (4), and a medium outlet pipe (6) is installed on the right side of the outer peripheral side wall of the upper valve cylinder (3).

3. The electric regulating valve according to claim 1, characterized in that: A first electric drive component (23) is installed below the bottom end of the lower valve cylinder (4), and a first rotatable screw rod (10) is installed at the output end of the first electric drive component (23). The first screw rod (10) is threadedly inserted into the first slide cylinder (9), and first limit strips (29) are extended at symmetrical positions on the outer peripheral side wall of the first slide cylinder (9), and first limit grooves (8) for the first limit strip (29) to slide longitudinally are opened at matching positions on the inner peripheral side wall of the first sleeve (7).

4. The electric regulating valve according to claim 1, characterized in that: A second electric drive member (24) is installed above the top end of the upper valve cylinder (3), and a second rotatable screw rod (18) is installed at the output end of the second electric drive member (24). The second screw rod (18) is threadedly inserted into the second slide cylinder (17), and second limit strips (30) are extended at symmetrical positions on the outer peripheral side wall of the second slide cylinder (17), and second limit grooves (16) for the second limit strips (30) to slide longitudinally are provided at matching positions on the inner peripheral side wall of the second sleeve (15).

5. The electric regulating valve according to claim 1, characterized in that: The lower impeller disc (12) is connected to the corresponding first scraper plates (14) via a plurality of first fixing rods (13) on the peripheral side wall, and the upper impeller disc (20) is connected to the corresponding second scraper plates (22) via a plurality of second fixing rods (21) on the peripheral side wall.

6. The electric regulating valve according to claim 1, characterized in that: A through hole (27) is provided in the middle of the intermediate ring plate (2), and the upper valve cavity (25) is located above the intermediate ring plate (2); When the valve core (28) moves downward to a position closing the through hole (27) in the middle ring plate (2), the bottom end of the second scraper (22) abuts against the top end of the middle ring plate (2).

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