Variable frequency control high-efficiency wear-resistant high-temperature resistant cinder valve

Abstract

This utility model discloses a frequency-controlled, high-efficiency, wear-resistant, and high-temperature ash discharge valve, comprising a valve pipe and two hoppers mounted on the valve pipe. Both ends of the valve pipe are bolted to cover plates. A bushing is detachably connected inside the valve pipe, with both ends of the bushing in close contact with the two cover plates. Two discharge ports are formed through the bushing, and the hoppers are connected to the discharge ports. A shaft is rotatably connected between the two cover plates, and rotor blades are mounted on the shaft. This utility model improves upon the existing ash discharge valve structure by designing the bushing to be detachable. When the bushing is severely worn, it can be replaced, reducing workload and economic costs compared to replacing the entire ash discharge valve. Furthermore, the cleaning structure design and layout are well-suited to the working principle of the ash discharge valve, facilitating the cleaning of the internal bushing and rotor blades of the valve pipe, thereby extending the structural service life.

Description

Technical Field

[0001] This utility model relates to the field of ash discharge valve technology, specifically a frequency-controlled, high-efficiency, wear-resistant, and high-temperature ash discharge valve. Background Technology

[0002] Ash discharge valves are key components of dust removal equipment for ash discharge, air supply, and feeding other equipment. They are suitable for both powdery and granular materials and are widely used in environmental protection, metallurgy, chemical, grain, food, and power industries.

[0003] During operation, the ash discharge valve mainly uses continuously rotating blades to drive the material through the valve pipe. The material is within the distance between two adjacent blades and moves together with the blades as they rotate until it is discharged through the discharge port. In the whole process, the inside of the valve pipe can be divided into a discharge area and a rotation area. The rotation area is used for the blades to rotate in a cycle. At this time, the material between the blades has been discharged. The rotation frequency of the blades is achieved by a motor.

[0004] For the entire unloading valve structure, ensuring stable material conveying within it is crucial. However, the main design flaws of current unloading valves lie in the non-replaceability and difficulty in cleaning between components. For example, the bushing structure is in direct contact with the material, and wear caused by contact with the blades will affect the seal between the bushing and the blades, hindering material turnover. Currently, the bushing and valve pipe are an integral structure, making replacement inconvenient. Furthermore, there is a lack of effective cleaning structure design for the blades and bushings, making it difficult to maintain the inside of the valve pipe. In view of this, this application proposes a frequency-controlled, high-efficiency, wear-resistant, and high-temperature unloading valve. Utility Model Content

[0005] The purpose of this invention is to provide a frequency-controlled, high-efficiency, wear-resistant, and high-temperature-resistant ash discharge valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a frequency-controlled, high-efficiency, wear-resistant, and high-temperature ash discharge valve, comprising a valve pipe and two hoppers installed on the valve pipe. Both ends of the valve pipe are bolted to cover plates. A bushing is detachably connected inside the valve pipe, with both ends of the bushing in close contact with the two cover plates. Two discharge ports are constructed through the bushing, and the hoppers are connected to the discharge ports. A shaft is rotatably connected between the two cover plates, and rotor blades are mounted on the shaft. Multiple nozzles are installed through the valve pipe, located in the rotation area of ​​the rotor blades. The multiple nozzles are connected by a straight pipe, and two external connecting pipes are configured on the straight pipe.

[0007] Preferably, the cover plate, bushing and rotor blades are all made of ZGMn13-2 material.

[0008] Preferably, the valve tube has two alignment protrusions inside along its axial direction, and the bushing has two alignment grooves on its outer periphery.

[0009] Preferably, the end of the cover plate facing the inside of the valve tube is provided with a plug, and the end of the bushing is provided with a slot.

[0010] Preferably, the valve tube and bushing have through-holes with inspection ports, and the valve tube is detachably connected to a sealing plate that fills the inspection ports.

[0011] Preferably, a connecting plate is installed on the outer periphery of the valve pipe, and a mounting block is constructed on the sealing plate, with the connecting plate and the mounting block being bolted together.

[0012] Preferably, the nozzle is mounted through the sealing plate.

[0013] Preferably, the nozzle includes a sleeve embedded in a sealing plate, a tube head slidably fitted inside the sleeve, and a spring connecting the tube head and the sleeve.

[0014] Preferably, rubber scrapers are installed at the ends of the rotor blades.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model improves the existing ash discharge valve structure by making the bushing detachable. When the bushing is severely worn, it can be replaced, which reduces the workload and economic cost compared to replacing the entire ash discharge valve. The cleaning structure design and layout can be well adapted to the working principle of the ash discharge valve, which helps to clean the bushing and rotor blades inside the valve pipe, thereby improving the service life of the structure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Rear view;

[0019] Figure 3 This utility model Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 This is a perspective view of the bushing structure of this utility model;

[0021] Figure 5 This utility model Figure 4 Rear view;

[0022] Figure 6 This utility model Figure 5Cross-sectional view along the BB direction;

[0023] Figure 7 This utility model Figure 6 Enlarged view of the structure at point C;

[0024] Figure 8 This is a perspective view of the cover plate structure of this utility model;

[0025] In the diagram: 1. Valve pipe; 2. Hopper; 3. Feeding plate; 4. Discharging plate; 5. Bushing; 6. Discharge port; 7. Alignment groove; 8. Slot; 9. Alignment protrusion; 10. Insert rod; 11. Shaft; 12. Rotor blade; 13. Nozzle; 1301. Pipe sleeve; 1302. Pipe head; 1303. Spring; 14. Straight pipe; 15. Outer pipe; 16. Sealing plate; 17. Connecting plate; 18. Rubber scraper; 19. Cover plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0027] Please see Figures 1-8 This embodiment provides a technical solution: a frequency-controlled, high-efficiency, wear-resistant, and high-temperature ash discharge valve, including a valve pipe 1 and two hoppers 2 installed on the valve pipe 1. The upper hopper 2 is used for feeding, and the lower hopper 2 is used for discharging. The upper hopper 2 is equipped with two feeding plates 3 to collect the material entering the hopper 2, and the lower hopper 2 is equipped with an inclined discharging plate 4 to guide the discharged material.

[0028] Both ends of the valve pipe 1 are bolted with cover plates 19, which are used to seal both ends of the valve pipe 1. A bushing 5 is detachably connected inside the valve pipe 1, with both ends of the bushing 5 in close contact with the two cover plates 19. The bushing 5 in this application is detachable; after removing the cover plate 19 furthest from the motor, the bushing 5 can be removed from the valve pipe 1. Two material discharge ports 6 are constructed through the bushing 5, and the hopper 2 is connected to the material discharge ports 6. A shaft 11 is rotatably connected between the two cover plates 19, and rotor blades 12 are mounted on the shaft 11. The rotation of the shaft 11 is achieved by an externally configured variable frequency motor, whose output shaft is connected to one end of the shaft 11. The rotor blades 12 and the bushing 5 work together to complete the material conveying operation. Multiple nozzles 13 are installed through the valve pipe 1, located in the rotation area of ​​the rotor blades 12. The multiple nozzles 13 are connected by a straight pipe 14, on which a... The device has two external pipes 15, which are connected to air and water pipes respectively via one-way valves. Since the nozzle 13 is located in the rotating area, the material will not come into contact with the nozzle 13 during the conveying process. In this application, during the cleaning process inside the valve pipe 1, the material has stopped conveying. The shaft 11 is slowly rotated by the variable frequency motor. Water is first supplied into the straight pipe 14 through the water pipe, and then the water is sprayed out through the nozzle 13. Since the rotor blades 12 and the bushing 5 are in contact, the water sprayed out by the nozzle 13 is located in the two adjacent rotor blades 12, completing the rinsing of the rotor blades 12. As the rotor blades 12 rotate, the water will come into contact with the bushing 5 to complete the cleaning of the bushing 5. Finally, as the rotor blades 12 continue to rotate, the water is discharged when passing through the hopper 2 below. After cleaning for a period of time, the air pipe is switched to dry the rotor blades 12. The structural design facilitates the cleaning of the inside of the valve pipe 1.

[0029] In summary, this utility model improves the existing ash discharge valve structure by making the bushing 5 detachable. When the bushing 5 is severely worn, it can be replaced. Compared with replacing the entire ash discharge valve, this reduces the workload and economic cost. The cleaning structure design and layout are well adapted to the working principle of the ash discharge valve, which helps to complete the cleaning of the bushing 5 inside the valve pipe 1 and the rotor blades 12, thereby improving the service life of the structure.

[0030] In a preferred embodiment, the cover plate 19, bushing 5 and rotor blade 12 are all made of ZGMn13-2 and have undergone water toughening treatment, with a hardness of 180-220 HBS. The material surface is also coated with tungsten carbide to ensure wear resistance and high temperature resistance.

[0031] As a preferred embodiment, the installation and positioning structure of the bushing 5 is designed as follows: two alignment protrusions 9 are constructed inside the valve tube 1 along its axial direction, and two alignment grooves 7 are constructed on the outer periphery of the bushing 5. A rod 10 is constructed at the end of the cover plate 19 facing the inside of the valve tube 1, and a slot 8 is constructed at the end of the bushing 5. When the bushing 5 is installed, the position of the bushing 5 is first determined by the cooperation of the alignment protrusions 9 and the alignment grooves 7. This makes it easy to push the bushing 5 into the valve tube 1 and ensures that the material outlet 6 on the bushing 5 can correspond to the position of the hopper 2. After the bushing 5 is completely inserted into the valve tube 1, the rod 10 on one of the cover plates 19 is inserted into the slot 8 to further lock the bushing 5. Then, after the other cover plate 19 is installed on the valve tube 1, the rod 10 on the cover plate 19 is also inserted into the slot 8. The two cover plates 19 complete the pressing and locking of the bushing 5, ensuring the structural stability and sealing of the bushing 5.

[0032] In a preferred embodiment, the valve pipe 1 and the bushing 5 are provided with a through-hole for inspection. A sealing plate 16 that fills the inspection hole is detachably connected to the valve pipe 1. A connecting plate 17 is installed on the outer periphery of the valve pipe 1. An installation block is provided on the sealing plate 16. The connecting plate 17 and the installation block are bolted together. The sealing plate 16, together with the inspection hole, facilitates the observation and maintenance of the internal structure of the valve pipe 1, avoiding the need to completely disassemble the ash valve structure. The bolted connection of the sealing plate 16 ensures stability.

[0033] In a preferred embodiment, the nozzle 13 is mounted through the sealing plate 16. The nozzle 13 includes a sleeve 1301 embedded in the sealing plate 16, and a tube head 1302 is slidably fitted inside the sleeve 1301. A spring 1303 connects the tube head 1302 and the sleeve 1301. Mounting the nozzle 13 on the sealing plate 16 facilitates the assembly of the entire ash discharge valve. This structural design also facilitates later maintenance. The sealing plate 16 is located in the rotation area, a position that is not passed through during material conveying, making the structural design reasonable. The nozzle 13 structure has been slightly modified to prevent material adhesion. When material adhesion occurs, some material will remain. To prevent this material from directly adhering to the nozzle orifice of the nozzle 13, the tube head 1302 is designed to be recessed. When cleaning is required, it extends outward under water pressure to be flush with or slightly lower than the end of the sleeve 1301, at which time the spring 1303 is in a compressed state.

[0034] In a preferred embodiment, a rubber scraper 18 is installed at the end of the rotor blade 12. A concave portion is formed on the rubber scraper 18, which is used to guide the material at the end toward the rotor blade 12. The addition of the rubber scraper 18 is designed to reduce wear and improve the sealing of the contact position. The rubber scraper 18 can be replaced by opening the sealing plate 16, which improves practicality.

[0035] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency wear-resistant high-temperature-resistant ash valve controlled by frequency conversion, comprising a valve pipe (1) and two hoppers (2) installed on the valve pipe (1), characterized in that, Both ends of the valve tube (1) are bolted with cover plates (19). A bushing (5) is detachably connected inside the valve tube (1). Both ends of the bushing (5) are in close contact with the two cover plates (19). The bushing (5) has two through-holes (6). The hopper (2) is connected to the through-holes (6). A shaft (11) is rotatably connected between the two cover plates (19). A rotor blade (12) is installed on the shaft (11). Multiple nozzles (13) are installed through the valve tube (1). The nozzles (13) are located in the rotation area of ​​the rotor blades (12). The multiple nozzles (13) are connected to each other through a straight pipe (14). Two external pipes (15) are configured on the straight pipe (14).

2. The high efficient wear and high temperature resistant ash valve with frequency conversion control according to claim 1, characterized in that: The cover plate (19), bushing (5) and rotor blade (12) are all made of ZGMn13-2.

3. The high efficient wear and high temperature resistant ash valve with frequency conversion control according to claim 2, characterized in that: The valve tube (1) has two alignment protrusions (9) inside along its axial direction, and the bushing (5) has two alignment grooves (7) on its outer periphery.

4. The high efficient wear and high temperature resistant ash valve with frequency conversion control according to claim 3, characterized in that: The end of the cover plate (19) facing the inside of the valve tube (1) is provided with a plug (10), and the end of the bushing (5) is provided with a slot (8).

5. The high efficient wear and high temperature resistant ash valve with frequency conversion control according to claim 1, characterized in that: The valve tube (1) and bushing (5) are provided with a maintenance port, and a sealing plate (16) for filling the maintenance port is detachably connected to the valve tube (1).

6. The high efficient wear and high temperature resistant ash valve with frequency conversion control according to claim 5, characterized in that: A connecting plate (17) is installed on the outer periphery of the valve pipe (1), and an mounting block is constructed on the sealing plate (16). The connecting plate (17) and the mounting block are bolted together.

7. The frequency-controlled, high-efficiency, wear-resistant, and high-temperature ash discharge valve according to claim 6, characterized in that... The nozzle (13) is installed through the sealing plate (16).

8. The high efficient wear and high temperature resistant de-slagging valve with frequency conversion control according to claim 7, characterized in that: The nozzle (13) includes a sleeve (1301) embedded in a sealing plate (16), a tube head (1302) slidingly fitted inside the sleeve (1301), and a spring (1303) connecting the tube head (1302) and the sleeve (1301).

9. The high efficient wear and high temperature resistant de-slagging valve with frequency conversion control according to claim 1, characterized in that: A rubber scraper (18) is installed at the end of the rotor blade (12).

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