Metal tube purging pressure regulating device for ash conveying system

Abstract

The utility model relates to the technical field of ash conveying pipeline, concretely to a kind of ash conveying system metal pipe purging pressure regulating device, including tee pipe fittings, the left side of tee pipe fittings is fixedly connected with regulating valve, the left end of regulating valve is fixedly connected with fan, the right side upper of tee pipe fittings is fixedly connected with pressure-measuring cylinder, the inside of pressure-measuring cylinder is equipped with self-adapting opening and closing mechanism, the top of pressure-measuring cylinder is fixedly connected with hydraulic oil pipe, the left end of hydraulic oil pipe is fixedly connected with linkage cylinder, the bottom of regulating valve is fixedly connected with pressure relief valve, the inside of pressure relief valve is equipped with adjusting mechanism. The utility model can automatically control the opening and closing of valve core to stabilize and improve air supplement pressure, and the pressure relief threshold of pressure relief valve can be adjusted by adjusting mechanism, improve the convenience and adjustability of device.

Description

Technical Field

[0001] This utility model relates to the field of ash conveying pipeline technology, specifically to a metal pipe purging pressure regulating device for an ash conveying system. Background Technology

[0002] In industries such as thermal power, metallurgy, and building materials, ash conveying systems often use compressed air as a carrier to transport dust to storage or processing equipment via metal pipes. The metal pipe purging pressure regulating device for ash conveying systems is a key component developed based on traditional pneumatic ash conveying technology, addressing core needs such as pressure control, anti-clogging, and wear reduction. Its function is not only to ensure purging effectiveness but also to achieve stable, efficient, and long-life operation of the system through precise pressure regulation, thereby significantly reducing safety risks and maintenance costs during industrial dust conveying.

[0003] Existing devices mainly stabilize air pressure by adding anti-clogging air supply components in the middle of the pipeline. Current technologies are largely similar to anti-clogging air supply devices for long-distance variable-elevation ash conveying pipelines. The structure of CN207539628U includes a pressure transmitter, a wear-resistant tee at the highest point of the ascending section or the lowest point of the descending section, and an anti-clogging air supply valve assembly at the horizontal inlet of the wear-resistant tee. This assembly consists of a manual shut-off valve, a pneumatic regulating valve, an orifice plate, and a check valve. The advantages of this device are system safety and reliability, high degree of automation, convenient operation, energy saving, strong timeliness, and good economic efficiency. However, there are still areas for optimization.

[0004] Existing devices primarily regulate the pressurization demand of the air supply component through detectors. This makes it difficult for some devices to adaptively open and close the valve core based on air pressure fluctuations, thus hindering the automatic increase of air supply pressure. Simultaneously, some devices rely on pressure relief valves to discharge excessive air pressure from the air supply component, making it difficult to adjust the thrust required for the pressure relief piston to slide down. This results in difficulties in adjusting the pressure relief valve's pressure relief threshold, reducing the device's efficiency and practicality. Therefore, to address these issues, a metal pipe purging pressure regulating device for ash conveying systems is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure regulating device for purging metal pipes in an ash conveying system. This addresses the problem mentioned in the background section where existing devices primarily regulate the pressurization demand of the air supply component through detectors. This makes it difficult for some devices to adaptively open and close the valve core based on air pressure fluctuations, thus hindering the automatic increase of air supply pressure. Furthermore, some devices primarily use pressure relief valves to discharge excessively high air pressure from the air supply component, making it difficult to adjust the thrust required for the pressure relief piston to slide down, thus making it inconvenient to adjust the pressure relief valve's pressure relief threshold.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal pipe purging pressure regulating device for an ash conveying system, comprising a three-way fitting, a regulating valve fixedly connected to the left side of the three-way fitting, a blower fixedly connected to the left end of the regulating valve, a pressure measuring cylinder fixedly connected to the upper right side of the three-way fitting, an adaptive opening and closing mechanism provided inside the pressure measuring cylinder, a hydraulic oil pipe fixedly connected to the top of the pressure measuring cylinder, a linkage cylinder fixedly connected to the left end of the hydraulic oil pipe, a pressure relief valve fixedly connected to the bottom of the linkage cylinder, and an adjusting mechanism provided inside the pressure relief valve.

[0007] Preferably, the adaptive opening and closing mechanism includes a first piston, the outer wall of the first piston is slidably attached to the middle of the inner wall of the pressure measuring cylinder, and a first spring is fixedly connected to the top of the first piston, the top of the first spring being fixedly connected to the upper part of the inner wall of the pressure measuring cylinder.

[0008] Preferably, the adaptive opening and closing mechanism further includes a second piston, the outer wall of the second piston is slidably attached to the middle of the inner wall of the linkage cylinder, and a second spring is fixedly connected to the bottom outer ring of the second piston, the bottom of the second spring is fixedly connected to the lower part of the inner wall of the linkage cylinder.

[0009] Preferably, a push-pull rod is fixedly connected to the bottom center of the second piston, the bottom end of the push-pull rod passes through the top of the regulating valve and is fixedly connected to a valve core, and the outer wall of the valve core is placed in the valve hole inside the regulating valve.

[0010] Preferably, the adjusting mechanism includes a third piston, the outer wall of which slides against the upper part of the inner wall of the pressure relief valve, a telescopic cylinder is fixedly connected to the middle of the bottom of the third piston, a sliding plate is fixedly connected to the bottom of the telescopic cylinder, and the outer wall of the sliding plate slides against the lower part of the inner wall of the pressure relief valve.

[0011] Preferably, the bottom of the third piston is fixedly connected to a third spring on the outer ring of the telescopic cylinder, and the bottom of the third spring is fixedly connected to the top of the sliding plate.

[0012] Preferably, an adjusting bolt is movably connected to the bottom center of the sliding plate, the bottom end of the adjusting bolt passes through the bottom of the pressure relief valve and is fixedly connected to a cap, a fixing nut is threaded on the outer wall of the adjusting bolt, and the top of the fixing nut is fixedly placed in the bottom center of the pressure relief valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model can monitor the air pressure fluctuation inside the tee fitting in real time through an adaptive opening and closing mechanism, so that the piston can adaptively open and close the valve core according to the air pressure fluctuation, which facilitates automatic increase of air replenishment pressure and improves the convenience and practicality of the device.

[0014] 2. This utility model can adjust the compression state of the spring inside the pressure relief valve through the adjustment mechanism, so that some devices can adjust the amount of thrust required for the pressure relief piston to slide down, which facilitates the adjustment of the pressure relief valve's pressure relief threshold and improves the adjustability and practicality of the device. Attached Figure Description

[0015] Figure 1 This is a front side perspective view of the structure of this utility model; Figure 2 This is a frontal sectional perspective view of the structure of this utility model; Figure 3 This is a front sectional perspective view of a portion of the pressure measuring cylinder and adaptive opening and closing mechanism of this utility model; Figure 4 This is a front sectional perspective view of a partial structure of the regulating valve and adaptive opening and closing mechanism of this utility model; Figure 5 This is a frontal sectional perspective view of a portion of the pressure relief valve and regulating mechanism of this utility model.

[0016] In the diagram: 11. Tee fitting; 12. Control valve; 13. Fan; 14. Pressure testing cylinder; 15. Hydraulic oil pipe; 16. Linkage cylinder; 17. Pressure relief valve; 2. Adaptive opening and closing mechanism; 21. First piston; 22. First spring; 23. Second piston; 24. Second spring; 25. Push-pull rod; 26. Valve core; 3. Adjusting mechanism; 31. Third piston; 32. Telescopic cylinder; 33. Third spring; 34. Sliding plate; 35. Adjusting bolt; 36. Twist cap; 37. Fixing nut. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 One embodiment provided by this utility model: A pressure regulating device for purging metal pipes in an ash conveying system includes a three-way fitting 11. A regulating valve 12 is fixedly connected to the left side of the three-way fitting 11, and a blower 13 is fixedly connected to the left end of the regulating valve 12. A pressure testing cylinder 14 is fixedly connected to the upper right side of the three-way fitting 11. An adaptive opening and closing mechanism 2 is provided inside the pressure testing cylinder 14. A hydraulic oil pipe 15 is fixedly connected to the top of the pressure testing cylinder 14. A linkage cylinder 16 is fixedly connected to the left end of the hydraulic oil pipe 15. The bottom of the linkage cylinder 16 is fixedly connected to the top of the regulating valve 12. A pressure relief valve 17 is fixedly connected to the bottom of the regulating valve 12. An adjusting mechanism 3 is provided inside the pressure relief valve 17.

[0019] The adaptive opening and closing mechanism 2 includes a first piston 21, the outer wall of which slides against the middle of the inner wall of the pressure measuring cylinder 14. A first spring 22 is fixedly connected to the top of the first piston 21, and the top of the first spring 22 is fixedly connected to the upper part of the inner wall of the pressure measuring cylinder 14. Through this design, the air pressure inside the tee fitting 11 can push the first piston 21 to slide upward and compress the first spring 22.

[0020] The adaptive opening and closing mechanism 2 also includes a second piston 23. The outer wall of the second piston 23 slides against the middle of the inner wall of the linkage cylinder 16. A second spring 24 is fixedly connected to the outer ring of the bottom of the second piston 23, and the bottom of the second spring 24 is fixedly connected to the lower part of the inner wall of the linkage cylinder 16. Through this design, the first piston 21 can be linked to the second piston 23 by the hydraulic oil inside the hydraulic oil pipe 15. A push-pull rod 25 is fixedly connected to the middle of the bottom of the second piston 23. The bottom end of the push-pull rod 25 passes through the top of the regulating valve 12 and is fixedly connected to the valve core 26. The outer wall of the valve core 26 is placed in the valve hole inside the regulating valve 12. Through this design, the second piston 23 drives the push-pull rod 25 and the valve core 26 to slide synchronously, so that the valve core 26 can adaptively open and close according to the air pressure change inside the three-way fitting 11.

[0021] The regulating mechanism 3 includes a third piston 31. The outer wall of the third piston 31 slides against the upper part of the inner wall of the pressure relief valve 17. A telescopic cylinder 32 is fixedly connected to the middle of the bottom of the third piston 31. A sliding plate 34 is fixedly connected to the bottom of the telescopic cylinder 32. The outer wall of the sliding plate 34 slides against the lower part of the inner wall of the pressure relief valve 17. This design allows the third piston 31 and the sliding plate 34 to slide within a limited position on the inner wall of the pressure relief valve 17. A third spring 33 is fixedly connected to the bottom of the third piston 31 on the outer ring of the telescopic cylinder 32. The bottom of the third spring 33 is fixedly connected to the top of the sliding plate 34. This design allows the third piston 31 to reduce the high air pressure inside the regulating valve 12 by compressing the third spring 33. An adjusting bolt 35 is movably connected to the middle of the bottom of the sliding plate 34. The bottom end of the adjusting bolt 35 passes through the bottom of the pressure relief valve 17 and is fixedly connected to a cap 36. A fixing nut 37 is threaded onto the outer wall of the adjusting bolt 35. The top of the fixing nut 37 is fixedly positioned in the middle of the bottom of the pressure relief valve 17. This design enables the twist cap 36 to drive the adjusting bolt 35 to rotate in a limited position, so that the adjusting bolt 35 is restricted by the fixing nut 37 and drives the sliding plate 34 to slide up and down, thereby adjusting the pressure relief threshold of the pressure relief valve 17.

[0022] Working principle: When the valve core 26 needs to be opened and closed adaptively, the air pressure fluctuation inside the three-way fitting 11 first drives the first piston 21 to slide up and down and compress the first spring 22. The first piston 21 is linked to the second piston 23 through the hydraulic oil inside the hydraulic oil pipe 15. The second piston 23 drives the push-pull rod 25 to slide in a limited position. The push-pull rod 25 drives the valve core 26 to slide synchronously, realizing the adaptive opening and closing operation of the valve core 26.

[0023] When it is necessary to adjust the pressure relief threshold, firstly, the twist cover 36 is manually rotated. The twist cover 36 drives the adjusting bolt 35 to rotate to a limit. The adjusting bolt 35 is restricted by the fixing nut 37 and drives the sliding plate 34 to slide up and down. The sliding plate 34 compresses the third spring 33, thereby adjusting the thrust required when the third piston 31 slides down, thus realizing the adjustment operation of the pressure relief threshold. The operation ends here.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A pressure regulating device for purging metal pipes in an ash conveying system, comprising a tee fitting (11), characterized in that: The left side of the three-way fitting (11) is fixedly connected to a regulating valve (12), and the left end of the regulating valve (12) is fixedly connected to a fan (13). The right side of the three-way fitting (11) is fixedly connected to a pressure testing cylinder (14). The pressure testing cylinder (14) is provided with an adaptive opening and closing mechanism (2). The top of the pressure testing cylinder (14) is fixedly connected to a hydraulic oil pipe (15). The left end of the hydraulic oil pipe (15) is fixedly connected to a linkage cylinder (16). The bottom of the linkage cylinder (16) is fixedly connected to the top of the regulating valve (12). The bottom of the regulating valve (12) is fixedly connected to a pressure relief valve (17), and the pressure relief valve (17) is provided with an adjusting mechanism (3).

2. The ash conveying system metal pipe purging pressure regulating device according to claim 1, characterized in that: The adaptive opening and closing mechanism (2) includes a first piston (21), the outer wall of the first piston (21) is slidably attached to the middle of the inner wall of the pressure measuring cylinder (14), and a first spring (22) is fixedly connected to the top of the first piston (21), and the top of the first spring (22) is fixedly connected to the upper part of the inner wall of the pressure measuring cylinder (14).

3. The ash conveying system metal pipe purging pressure regulating device according to claim 1, characterized in that: The adaptive opening and closing mechanism (2) further includes a second piston (23), the outer wall of the second piston (23) is slidably attached to the middle of the inner wall of the linkage cylinder (16), and a second spring (24) is fixedly connected to the bottom outer ring of the second piston (23), and the bottom of the second spring (24) is fixedly connected to the lower part of the inner wall of the linkage cylinder (16).

4. The ash conveying system metal pipe purging pressure regulating device according to claim 3, characterized in that: A push-pull rod (25) is fixedly connected to the bottom middle of the second piston (23). The bottom end of the push-pull rod (25) passes through the top of the regulating valve (12) and is fixedly connected to the valve core (26). The outer wall of the valve core (26) is placed in the valve hole inside the regulating valve (12).

5. The ash conveying system metal pipe purging pressure regulating device according to claim 1, characterized in that: The adjusting mechanism (3) includes a third piston (31), the outer wall of which slides against the inner wall of the pressure relief valve (17), a telescopic cylinder (32) is fixedly connected to the bottom middle of the third piston (31), a sliding plate (34) is fixedly connected to the bottom of the telescopic cylinder (32), and the outer wall of the sliding plate (34) slides against the inner wall of the pressure relief valve (17).

6. The ash conveying system metal pipe purging pressure regulating device according to claim 5, characterized in that: The bottom of the third piston (31) is fixedly connected to the outer ring of the telescopic cylinder (32) with a third spring (33), and the bottom of the third spring (33) is fixedly connected to the top of the sliding plate (34).

7. The ash conveying system metal pipe purging pressure regulating device according to claim 5, characterized in that: An adjusting bolt (35) is movably connected to the bottom center of the sliding plate (34). The bottom end of the adjusting bolt (35) passes through the bottom of the pressure relief valve (17) and is fixedly connected to a twist cap (36). A fixing nut (37) is threaded on the outer wall of the adjusting bolt (35). The top of the fixing nut (37) is fixedly placed in the bottom center of the pressure relief valve (17).

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