An electrostatic precipitator for waste gas with convenient dust recovery
By installing an outer shell and partitions on the outside of the ash hopper of the electrostatic precipitator to separate it into an independent detection chamber, and equipping it with a pressure sensor and a solenoid valve, the problem of air leakage caused by ash hopper corrosion is solved, and real-time air leakage detection and efficient dust recovery are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINHANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-23
AI Technical Summary
The dust hopper of existing electrostatic precipitators has tiny leaks due to corrosion, leading to air leakage and affecting dust removal efficiency.
An outer shell and partitions are installed on the outside of the ash hopper to divide the chamber between it and the ash hopper into multiple independent detection chambers. Each chamber is equipped with a pressure sensor, an air supply assembly, an electric rotating assembly, and a solenoid valve to achieve real-time pressure monitoring and leak detection for each detection chamber.
This effectively avoids a decrease in dust recovery efficiency due to air leakage, improves equipment stability and dust removal effect, and ensures normal equipment operation.
Smart Images

Figure CN224388987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrostatic precipitator technology, and in particular to an electrostatic precipitator for waste gas that facilitates dust recovery. Background Technology
[0002] An electrostatic precipitator is a common air purification device that removes dust and pollutants from the air by utilizing the principle of electrostatics. The working principle of an electrostatic precipitator is to use an electrostatic field to charge airborne dust particles, which are then attracted to a collecting plate by the electric field force, thus purifying the air. The main components of an electrostatic precipitator include a power supply, a high-voltage generator, a collecting plate, and electrodes.
[0003] Existing electrostatic precipitators often develop tiny leaks in their dust hoppers due to corrosion. These leaks are initially difficult to detect, but during use, they can cause air leakage, preventing the dust hopper from functioning properly. Over time, these leaks gradually enlarge, allowing external airflow to enter and interfere with the electric field and dust collection, thus significantly reducing dust removal efficiency. Therefore, improvements are proposed. Utility Model Content
[0004] This utility model is a waste gas electrostatic precipitator that facilitates dust recovery, designed to overcome the shortcomings of existing technologies.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electrostatic precipitator for waste gas that facilitates dust recovery, comprising an electrostatic precipitator body and two ash hoppers fixed at the bottom of the electrostatic precipitator body, the outer surfaces of the two ash hoppers are fixedly covered with shells, and the interiors of the two shells are fixedly connected with multiple partitions, and the partitions are sealed and abut against the outer wall of the ash hopper.
[0006] Multiple fixed tubes are fixedly connected to the outer surfaces of both shells. The other ends of the multiple fixed tubes are fixedly connected to an annular groove. A movable ring is sealed and slidable inside the annular groove. An electric rotating component is installed between the movable ring and the annular groove.
[0007] A fixed cylinder is fixedly inserted through one side of the outer surface of the movable ring, and a pressure sensor is fixedly inserted through one side of the outer surface of the fixed cylinder. An air supply assembly is installed between the end of the fixed cylinder and the movable ring.
[0008] Furthermore, an annular sealing gasket is fixedly connected to the inner surface of the movable ring, and the annular sealing gasket is in sealing contact with the inner surface of the annular groove. A through hole is provided on the annular sealing gasket, and the through hole communicates with the fixed cylinder and matches the fixed tube. The design of the annular sealing gasket further enhances the sealing performance between the movable ring and the annular groove. The communication design of the through hole ensures the smoothness of gas transmission and the accuracy of detection.
[0009] Furthermore, multiple steel balls are evenly embedded at the top and bottom of the movable ring, and the steel balls fit snugly into the annular groove. The design of the steel balls reduces the friction between the movable ring and the annular groove, ensuring the flexibility and stability of the movable ring's rotation, while extending the service life of the equipment.
[0010] Furthermore, the electric rotating assembly includes a motor, a mounting block is fixedly connected to one side of the outer surface of the motor, and the mounting block is fixedly installed on one side of the outer wall of the housing. A pinion is fixedly connected to the drive end of the motor, and a ring gear is meshed with one side of the outer surface of the pinion. The ring gear is fixedly installed on the top of the movable ring, which can realize the precise rotation of the movable ring and ensure that the gas path switching of the detection chamber is efficient and reliable.
[0011] Furthermore, an exhaust solenoid valve is fixedly connected to one side of the outer surface of the fixed cylinder. The design of the exhaust solenoid valve enables automatic exhaust of the testing chamber, ensuring the efficiency of the testing process and the convenience of operation.
[0012] Furthermore, the air supply assembly includes a fixed frame, which is fixedly installed at the bottom of the movable ring. An air pump is fixedly connected to the top of the fixed frame, and a connecting pipe is fixedly connected to the output end of the air pump. An air inlet solenoid valve is fixedly connected to the other end of the connecting pipe and the fixed cylinder. Through the cooperation of the air pump and the air inlet solenoid valve, the air supply assembly realizes automatic air filling of the detection chamber, ensuring the accuracy and efficiency of air pressure detection.
[0013] Furthermore, the multiple partitions divide the cavity formed between the ash hopper and the outer shell into multiple independent detection chambers. The design of the independent detection chambers facilitates individual pressure monitoring and leakage detection for each detection chamber, thereby improving the accuracy of the detection and the maintainability of the equipment.
[0014] The beneficial effects of this utility model are:
[0015] In use, this utility model is an electrostatic precipitator for waste gas that facilitates dust recovery. By setting an outer shell and partitions outside the ash hopper, the chamber between the ash hopper and the outer shell is divided into multiple independent detection chambers. Combined with a pressure sensor, air supply component, electric rotating component, annular groove, movable ring and fixed pipe, it can monitor the air pressure changes of each detection chamber in real time, promptly detect and repair air leakage problems, effectively avoid the decrease in dust recovery efficiency caused by air leakage, thereby improving the stability of the equipment and the dust removal effect. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments 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.
[0017] Figure 1 : Front view of this utility model;
[0018] Figure 2 Partial perspective view of this utility model;
[0019] Figure 3 The present utility model Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 Partial sectional view of this utility model;
[0021] Figure 5 The present utility model Figure 3 Enlarged view of point B in the middle.
[0022] The attached figures are labeled as follows:
[0023] 1. Electrostatic precipitator body; 2. Outer shell; 3. Motor; 4. Ash hopper; 5. Annular groove; 6. Mounting block; 7. Pinion; 8. Movable ring; 9. Ring gear; 10. Fixed pipe; 11. Fixed cylinder; 12. Air pressure sensor; 13. Fixing frame; 14. Air pump; 15. Exhaust solenoid valve; 16. Inlet solenoid valve; 17. Connecting pipe; 18. Partition plate; 19. Annular sealing gasket; 20. Steel ball. Detailed Implementation
[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figures 1 to 5As shown, this invention relates to an electrostatic precipitator for easy dust recovery, comprising a frame 1, a main body 1 of the electrostatic precipitator, and two hoppers 4 fixed to the bottom of the main body 1. During use, the top of each hopper 4 is welded with a connecting flange, which is then fixed to the bottom flange of the main body 1 via bolts. Both hoppers 4 are covered by an outer shell 2. Multiple partitions 18 are fixedly connected inside each outer shell 2, and these partitions 18 are in sealed contact with the outer wall of the hopper 4. The partitions 18 divide the cavity formed between the hopper 4 and the outer shell 2 into multiple independent detection chambers. This design not only enables individual pressure monitoring and leak detection in each detection chamber but also forms a double leak-proof structure through the cooperation of the outer shell 2 and the hopper 4. Regardless of whether a leak occurs in the hopper 4 or the outer shell 2, the normal operation of the main body 1 of the electrostatic precipitator can be effectively guaranteed except during testing, thereby improving the reliability of the equipment and the dust recovery efficiency.
[0026] Multiple fixed tubes 10 are fixedly connected to the outer surfaces of both outer shells 2. The other ends of the multiple fixed tubes 10 are fixedly connected to an annular groove 5. A movable ring 8 is sealed and slidable inside the annular groove 5. An annular sealing gasket 19 is fixedly connected to the inner surface of the movable ring 8, and the annular sealing gasket 19 is in sealing contact with the inner surface of the annular groove 5. A through hole is opened on the annular sealing gasket 19, and the through hole is connected to the fixed cylinder 11 and matched with the fixed tube 10. Multiple steel balls 20 are evenly embedded in the top and bottom of the movable ring 8, and the steel balls 20 are in contact with the annular groove 5.
[0027] An electric rotating assembly is installed between the movable ring 8 and the annular groove 5. The electric rotating assembly includes a motor 3. A mounting block 6 is fixedly connected to one side of the outer surface of the motor 3, and the mounting block 6 is fixedly installed on one side of the outer wall of the outer shell 2. A pinion 7 is fixedly connected to the drive end of the motor 3. A ring gear 9 is meshed with one side of the outer surface of the pinion 7, and the ring gear 9 is fixedly installed on the top of the movable ring 8. The motor 3 is a servo motor, which is beneficial for controlling the rotation angle of the pinion 7.
[0028] A fixed cylinder 11 is fixedly connected to one side of the outer surface of the movable ring 8. An exhaust solenoid valve 15 is fixedly connected to one side of the outer surface of the fixed cylinder 11. A pressure sensor 12 is fixedly connected to one side of the outer surface of the fixed cylinder 11. An air supply assembly is installed between the end of the fixed cylinder 11 and the movable ring 8. The air supply assembly includes a fixed frame 13, which is fixedly installed at the bottom of the movable ring 8. An air pump 14 is fixedly connected to the top of the fixed frame 13. A connecting pipe 17 is fixedly connected to the output end of the air pump 14. An intake solenoid valve 16 is fixedly connected between the other end of the connecting pipe 17 and the fixed cylinder 11. Both the exhaust solenoid valve 15 and the intake solenoid valve 16 are existing technologies. Their working principle is that an electromagnetic force is generated by energizing a coil, which drives the valve core to move, thereby opening or closing the fluid passage. When the coil is de-energized, the valve core is reset by the action of the spring, returning to its initial state.
[0029] Working principle:
[0030] Start-up and transmission: When testing is required, motor 3 starts and runs, motor 3 drives pinion 7 to rotate, pinion 7 drives ring gear 9 to rotate, the rotation of ring gear 9 further drives movable ring 8 to rotate, the rotation of movable ring 8 drives fixed annular sealing gasket 19, fixed frame 13, air pump 14, fixed cylinder 11 and other components to move. Through this series of linkages, fixed cylinder 11, through hole, annular groove 5 and corresponding fixed pipe 10 are connected.
[0031] Inflation and Testing: The air pump 14 starts working, filling the corresponding testing chamber with outside air through the fixed cylinder 11, through hole, annular groove 5 and fixed pipe 10. After inflating for a period of time, the air pump 14 stops running, and the air intake solenoid valve 16 closes at the same time.
[0032] Air pressure monitoring and judgment: After the air pressure stabilizes, the air pressure sensor 12 continuously monitors the air pressure changes in the detection room.
[0033] If the air pressure value does not change, or the change value is lower than the set threshold, it indicates that there is no air leakage in the detection chamber.
[0034] If the air pressure value changes beyond the set threshold, it indicates that there is an air leak in the testing chamber.
[0035] Exhaust and Repeat Testing: If there is no leakage, the exhaust solenoid valve 15 is opened to release the gas. Then the intake solenoid valve 16 is opened, and the system repeats the above operation to test the next test chamber.
[0036] Leakage Alarm and Inspection: If a leak is detected, the system can trigger an alarm (which can be installed separately or used in conjunction with the main body of the electrostatic precipitator). Staff should promptly inspect and repair the leak.
[0037] It should be noted that, in actual use, the motor 3, air pump 14, air pressure sensor 12, exhaust solenoid valve 15, and intake solenoid valve 16 are electrically connected to the control box used by the main body 1 of the electrostatic precipitator to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.
[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A waste gas electrostatic precipitator for easy dust recovery, comprising an electrostatic precipitator body (1) and two ash hoppers (4) fixed to the bottom of the electrostatic precipitator body (1), characterized in that: The outer surfaces of the two ash hoppers (4) are fixedly covered with shells (2), and the interiors of the two shells (2) are fixedly connected with multiple partitions (18), and the partitions (18) are sealed and abut against the outer wall of the ash hoppers (4); Multiple fixed tubes (10) are fixedly connected to the outer surfaces of the two outer shells (2). The other ends of the multiple fixed tubes (10) are fixedly connected to an annular groove (5). A movable ring (8) is sealed and slidably installed in the annular groove (5). An electric rotating component is installed between the movable ring (8) and the annular groove (5). A fixed cylinder (11) is fixedly inserted through one side of the outer surface of the movable ring (8), and a pressure sensor (12) is fixedly inserted through one side of the outer surface of the fixed cylinder (11). An air supply assembly is installed between the end of the fixed cylinder (11) and the movable ring (8).
2. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: The inner surface of the movable ring (8) is fixedly connected with an annular sealing gasket (19), and the annular sealing gasket (19) is sealed and abutted against the inner surface of the annular groove (5). The annular sealing gasket (19) has a through hole, and the through hole is connected to the fixed cylinder (11), and the through hole is matched with the fixed tube (10).
3. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: The top and bottom of the movable ring (8) are evenly embedded with multiple steel balls (20), and the steel balls (20) fit into the annular groove (5).
4. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: The electric rotating assembly includes a motor (3), a mounting block (6) is fixedly connected to one side of the outer surface of the motor (3), and the mounting block (6) is fixedly installed on one side of the outer wall of the housing (2). A pinion (7) is fixedly connected to the drive end of the motor (3), and a ring gear (9) is meshed with one side of the outer surface of the pinion (7), and the ring gear (9) is fixedly installed on the top of the movable ring (8).
5. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: An exhaust solenoid valve (15) is fixedly inserted through one side of the outer surface of the fixed cylinder (11).
6. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: The air supply assembly includes a fixed frame (13), which is fixedly installed at the bottom of the movable ring (8). An air pump (14) is fixedly connected to the top of the fixed frame (13). A connecting pipe (17) is fixedly connected to the output end of the air pump (14). An air intake solenoid valve (16) is fixedly connected to the other end of the connecting pipe (17) and the fixed cylinder (11).
7. The electrostatic precipitator for waste gas with easy dust recovery according to claim 1, characterized in that: The multiple partitions (18) divide the cavity formed between the ash hopper (4) and the outer shell (2) into multiple independent detection chambers.