A direct drive system for cathode vibration of electrostatic precipitator

Abstract

The invention discloses a direct-connected transmission system for cathode rapping of an electrostatic precipitator, comprising a motor, a reducer, a coupling, a transmission shaft, an insulating box, an electromagnetic transmission shaft, a rapping shaft, a rapping hammer, a transition sleeve and an ash-blocking sealing plate; the output shaft of the motor is connected to the input shaft of the reducer, the output shaft of the reducer is connected to one end of the transmission shaft through a coupling, the other end of the transmission shaft is inserted into the insulating box and connected to one end of the electromagnetic transmission shaft, the other end of the electromagnetic transmission shaft is connected to one end of the rapping shaft, the other end of the rapping shaft passes through the transition sleeve and the ash-blocking sealing plate and is connected to the rapping hammer, the rapping hammer is facing the discharge electrode, the opening at one end of the transition sleeve is closed by the ash-blocking sealing plate, the opening at the other end of the transition sleeve is connected to the insulating box, the system has the characteristics of saving space, simple structure, no ash accumulation and convenient overhaul and maintenance.

Description

Technical Field

[0001] The invention belongs to the field of environmental protection and relates to a direct-connected transmission system used for cathode vibration of an electrostatic precipitator. Background Art

[0002] With the implementation of ultra-low emissions in the field of environmental protection, it is particularly important to improve the efficiency of the original electrostatic precipitator. The efficiency improvement of electrostatic precipitators currently mainly adopts technical routes such as small-area power supply to increase the efficiency of electric field operation and increase the dust collection area.

[0003] Common cathode vibrating systems mainly adopt (1) top electromagnetic lifting vibration; (2) top transmission side vibration; (3) motor drive is located at the top of the insulation box, and the side transmission vibration is driven by chain. All of the above methods have disadvantages. Method (1) is large in number. Once the installation is deviated, the electromagnetic vibration shaft is prone to breakage, and the inspection and maintenance are cumbersome. Method (2) is a transmission shaft installed vertically inside the dust collector. It needs to generate a horizontal driving force through the fork ratchet to drive the vibration shaft. The ratchet is prone to dust accumulation and wear and occupies the internal space of the dust collector, which is not conducive to zoning transformation and increasing the dust collection area. The ratchet replacement must be stopped, which takes up the equipment use time. Method (3) is non-direct connection. The motor drive is located at the top of the insulation box, and the electromagnetic transmission shaft is driven by the chain drive. A spiral dust scraper is also required. The structure is complex and difficult to inspect. The chain is prone to dust accumulation and jamming or breaking. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a direct-connected transmission system for cathode vibration of an electrostatic precipitator, which has the characteristics of saving space, simple structure, no dust accumulation and convenient overhaul and maintenance.

[0005] To achieve the above object, the direct drive system for cathode rapping of an electrostatic precipitator according to the present invention comprises a motor, a reducer, a coupling, a transmission shaft, an insulating box, an electromagnetic transmission shaft, a rapping shaft, a rapping hammer, a transition sleeve and an ash blocking sealing plate;

[0006] The output shaft of the motor is connected to the input shaft of the reducer, the output shaft of the reducer is connected to one end of the transmission shaft through a coupling, the other end of the transmission shaft is inserted into the insulating box and connected to one end of the electromagnetic transmission shaft, the other end of the electromagnetic transmission shaft is connected to one end of the rapping shaft, the other end of the rapping shaft passes through the transition sleeve and the ash blocking sealing plate and is connected to the rapping hammer, the rapping hammer is facing the discharge electrode, the opening at one end of the transition sleeve is closed by the ash blocking sealing plate, and the opening at the other end of the transition sleeve is connected to the insulating box.

[0007] An insulation layer is arranged on the outer wall of the transition sleeve, and three through holes are opened on the side wall of the insulation box. A ring-type electric heater is installed in one through hole, and the other two through holes are used as inspection holes.

[0008] The through holes are distributed in sequence along the circumferential direction.

[0009] A wiring protection cap and a heat-insulating flange box are arranged on the top of the ring-type electric heater, wherein the wiring protection cap is embedded in the heat-insulating flange box.

[0010] It also includes a control system. A temperature measuring element is arranged at the end of the insulation box. The temperature measuring element is connected to the control system. The control system is connected to the control end of the ring-type electric heater.

[0011] The temperature measuring element is installed on the inner wall of the insulation box by threaded connection.

[0012] It also includes a maintenance platform, wherein the motor and the reducer are fixed on the maintenance platform through a bracket.

[0013] The present invention has the following beneficial effects:

[0014] In the specific operation of the direct-connected transmission system for cathode vibration of an electrostatic precipitator described in the present invention, the motor is connected to the vibration shaft via a reducer, a coupling, a transmission shaft, an electromagnetic transmission shaft and a vibration shaft, thereby avoiding the use of chains or ratchet connections. The system has high operating reliability, a simple structure, is easy to inspect and maintain, and does not accumulate dust. At the same time, all transmission components are located outside the electrostatic precipitator components, saving space inside the electrostatic precipitator. When powering the cathode sub-area, failure of an emission electrode inside the precipitator due to vertical shaft transmission can be avoided, thereby ensuring the dust collection area.

[0015] Furthermore, the insulation box is equipped with a temperature measuring element and an annular electric heater to control problems inside the insulation box and effectively prevent the electromagnetic transmission shaft from getting wet and causing short circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 is the distribution diagram of each through hole.

[0018] Among them, 1 is a motor, 2 is a coupling, 3 is a transmission shaft, 4 is a temperature measuring element, 5 is a ring-type electric heater, 6 is an insulating box, 7 is an electromagnetic transmission shaft, 8 is a transition sleeve, 9 is an ash blocking sealing plate, and 10 is a bracket. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0020] refer to Figure 1The direct-connected transmission system for cathode rapping of an electrostatic precipitator described in the present invention comprises a motor 1, a reducer, a coupling 2, a transmission shaft 3, an insulating box 6, an electromagnetic transmission shaft 7, a rapping shaft, a rapping hammer, a transition sleeve 8 and an ash-blocking sealing plate 9; the output shaft of the motor 1 is connected to the input shaft of the reducer, the output shaft of the reducer is connected to one end of the transmission shaft 3 through the coupling 2, the other end of the transmission shaft 3 is inserted into the insulating box 6 and connected to one end of the electromagnetic transmission shaft 7, the other end of the electromagnetic transmission shaft 7 is connected to one end of the rapping shaft, the other end of the rapping shaft passes through the transition sleeve 8 and the ash-blocking sealing plate 9 and is connected to the rapping hammer, the rapping hammer is facing the discharge electrode, the opening at one end of the transition sleeve 8 is closed by the ash-blocking sealing plate 9, and the opening at the other end of the transition sleeve 8 is connected to the insulating box 6.

[0021] An insulation layer is provided on the outer wall of the transition sleeve 8, and three through holes are opened on the side wall of the insulation box 6. A ring-type electric heater 5 is installed in one through hole, and the other two through holes are used as inspection holes; the through holes are distributed in sequence along the circumferential direction; a wiring protection cap and an insulation flange box are provided on the top of the ring-type electric heater 5, wherein the wiring protection cap is embedded in the insulation flange box.

[0022] The present invention also includes a control system. A temperature measuring element 4 is provided at the end of the insulating box 6 . The temperature measuring element 4 is connected to the control system, and the control system is connected to the control end of the ring-type electric heater 5 .

[0023] The temperature measuring element 4 is installed on the inner wall of the insulating box 6 by threaded connection.

[0024] The present invention also includes a maintenance platform, wherein the motor 1 and the reducer are fixed on the maintenance platform via a bracket 10 .

[0025] The specific working process of the present invention is:

[0026] The system is driven by the motor 1, which is directly connected to the transmission shaft 3 by the coupling 2. The other end of the transmission shaft 3 is inserted into the insulation box 6 and connected to the electromagnetic transmission shaft 7. The electromagnetic transmission shaft 7 acts as an insulator to avoid high-voltage electric shock. The other end of the electromagnetic transmission shaft 7 is connected to the rapping shaft, and the rapping hammer on the rapping shaft impacts the discharge electrode to clean the dust. The transition sleeve 8 is connected between the insulation box 6 and the ash blocking sealing plate 9. The transition sleeve 8 is provided with external insulation. On the one hand, its diameter is small and can avoid the column. On the other hand, it can lead the insulation box 6 to the outside of the column for installation, which is convenient for maintenance. The ash blocking sealing plate 9 is installed on the inside of the electrostatic precipitator shell to isolate dust. Figure 2As shown, the insulating box 6 is provided with three holes evenly distributed at 360°, one of which is used to install the ring-type electric heater 5, and the other two are used as inspection holes. A wiring protection cap is provided at the top of the ring-type electric heater 5, which is embedded in the insulation flange box and is easy to disassemble. The other two are inspection and replacement doors for the electromagnetic transmission shaft 7. A temperature measuring element 4 is provided at the front end of the insulating box 6 for temperature control. When it is detected that the temperature is heated to the set value, the ring-type electric heater 5 is controlled to stop working through the temperature control signal. When the temperature is lower than the set value, the ring-type electric heater 5 is controlled to be put into operation to prevent the electromagnetic transmission shaft 7 from being damp and short-circuited. The temperature measuring element 4 is threadedly connected, which is convenient for installation. The front and rear ends of the insulating box 6 are connected by flange glands, which are convenient for installation and disassembly. The motor 1 is fixed to the inspection platform by a bracket 10 to avoid vibration.

Claims

1. A direct drive system for cathode rapping of an electrostatic precipitator, characterized in that: It comprises a motor (1), a reducer, a coupling (2), a transmission shaft (3), an insulation box (6), an electromagnetic transmission shaft (7), a rapping shaft, a rapping hammer, a transition sleeve (8) and an ash blocking sealing plate (9); The output shaft of the motor (1) is connected to the input shaft of the reducer, the output shaft of the reducer is connected to one end of the transmission shaft (3) through a coupling (2), the other end of the transmission shaft (3) is inserted into the insulation box (6) and connected to one end of the electromagnetic transmission shaft (7), the other end of the electromagnetic transmission shaft (7) is connected to one end of the rapping shaft, the other end of the rapping shaft passes through the transition sleeve (8) and the ash blocking sealing plate (9) and is connected to the rapping hammer, the rapping hammer is directly opposite to the discharge electrode, the opening of one end of the transition sleeve (8) is closed by the ash blocking sealing plate (9), and the opening of the other end of the transition sleeve (8) is connected to the insulation box (6); An insulation layer is provided on the outer wall of the transition sleeve (8), and three through holes are opened on the side wall of the insulation box (6), one of the through holes is installed with a ring-type electric heater (5), and the other two through holes are used as inspection holes; The through holes are sequentially distributed along the circumferential direction; A wiring protection cap and a heat-insulating flange box are arranged on the top of the ring-type electric heater (5), wherein the wiring protection cap is embedded in the heat-insulating flange box; It also includes a control system. A temperature measuring element (4) is provided at the end of the insulating box (6). The temperature measuring element (4) is connected to the control system, and the control system is connected to the control end of the ring-type electric heater (5).

2. The direct-connected transmission system for cathode rapping of an electrostatic precipitator according to claim 1, characterized in that: The temperature measuring element (4) is installed on the inner wall of the insulating box (6) by means of threaded connection.

3. The direct-connected transmission system for cathode rapping of an electrostatic precipitator according to claim 1, characterized in that: It also includes a maintenance platform, wherein the motor (1) and the reducer are fixed on the maintenance platform via a bracket (10).

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