Hot air blowing device for porcelain column of electric dust collector

Abstract

The invention discloses a hot air blowing device for a porcelain column of an electric dust collector. The hot air blowing device comprises a cathode rapping heat preservation box, the porcelain column, a rapping shaft, a blowing pipe, an air blowing mechanism and a heating box. The cathode rapping insulation can is located outside the electric field, the knob insulator is rotationally connected to an inner cavity of the cathode rapping insulation can, one end of the rapping shaft is located in the electric field, and the other end of the rapping shaft penetrates through one side wall of the cathode rapping insulation can and is fixed to one end of the knob insulator; the purging pipe is fixed on the inner wall of the cathode rapping heat preservation box so as to purge the porcelain column; an air inlet of the heating box communicates with an air outlet of the air blowing mechanism, and an air outlet of the heating box communicates with an inner cavity of the purging pipe through a hot air pipe so as to input hot air into the purging pipe. According to the invention, hot air is utilized to purge the cathode rapping heat preservation box and the porcelain column, and the quartz plate and the bottom plate are additionally arranged in the cathode rapping heat preservation box, so that the dust accumulation amount in the cathode rapping heat preservation box is effectively reduced, the creepage of the porcelain column is reduced, the service life of the porcelain column is prolonged, and the operation efficiency of electric dust collection is improved. The device is simple in structure and convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of electric dust collector equipment, and more particularly to a hot air blowing device for a porcelain column of an electric dust collector. Background Art

[0002] During the tin smelting process, the flue gas generated by the top-blown furnace is ionized by the electrostatic precipitator under the action of the electric field. After being charged, the smoke is adsorbed on the electrode plate, and the smoke is vibrated by the two electrodes and falls into the ash hopper for recovery. At present, the magnetic column of the cathode vibrating equipment is usually located in the electric field. After the flue gas enters the electric field from the smelting and top-blowing system, a large part of the smoke falls on the surface of the porcelain column. There is also a certain amount of metal components in the smoke. Over time, the insulation performance of the porcelain shaft decreases, and creepage breakdown occurs; when the flue gas composition is complex, the content of F, Cl ions and Cd, F in the smoke is high, causing the flue gas dew point temperature to rise, and the smoke ash will adhere to the porcelain column, resulting in creepage breakdown of the porcelain column, reducing the service life of the porcelain column and affecting the efficiency of the electrostatic precipitator.

[0003] Therefore, how to provide a hot air blowing device for the porcelain column of an electrostatic precipitator that can reduce porcelain column creepage, extend the service life of the porcelain column, and improve the operating efficiency of the electrostatic precipitator is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention provides a hot air blowing device for an electrostatic precipitator porcelain column, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A hot air blowing device for a porcelain column of an electrostatic precipitator, comprising a cathode vibrating insulation box, a porcelain column, a vibrating shaft, a blowing pipe, an air blowing mechanism and a heating box;

[0007] The cathode rapping insulation box is located outside the electric field, the porcelain column is rotatably connected to the inner cavity of the cathode rapping insulation box, one end of the rapping shaft is located in the electric field of the electrostatic precipitator, and the other end passes through a side wall of the cathode rapping insulation box and is fixed to one end of the porcelain column; the purge pipe is fixed on the inner wall of the cathode rapping insulation box to purge the porcelain column;

[0008] The air inlet of the heating box is connected to the air outlet of the blowing mechanism, and the air outlet of the heating box is connected to the inner cavity of the purge pipe through a hot air pipe to input hot air into the purge pipe.

[0009] The beneficial effect of the technical solution of the present invention is that air is supplied through the blowing mechanism, the heating box heats the air delivered by the blowing mechanism and delivers it to the purge pipe through the hot air pipe, and the purge pipe purges the porcelain column with hot air in the cathode vibration insulation box, which can effectively reduce the creepage of the porcelain column, extend the service life of the porcelain column, and improve the operating efficiency of the electrostatic precipitator.

[0010] Preferably, the blowing mechanism comprises a motor and a blower, the motor is in driving connection with the blower, and the air outlet of the blower is connected to the air inlet of the heating box through an air supply pipe. The cold air is delivered by the blower.

[0011] Preferably, a thermal resistor is fixed at one end of the hot air pipe close to the heating box to detect the hot air temperature; a purge valve is fixed at one end of the hot air pipe close to the cathode rapping insulation box to adjust the hot air purge volume. The hot air temperature is detected by the thermal resistor, and the hot air purge volume is controlled by the purge valve, so that the control is more accurate and efficient.

[0012] Preferably, the air inlet of the blower is rotatably connected to a flap valve to adjust the air intake of the blower. The delivery amount of cold air can be adjusted by the opening of the flap valve.

[0013] Preferably, a control box is further included, and the control box is electrically connected to the motor, the heating box and the thermal resistor respectively. The control box is connected to the motor, the thermal resistor and the heating box through cables. In the automatic mode, the thermal resistor detects the hot air temperature according to the set temperature, and the control box can automatically adjust the temperature of the hot air outlet of the heating box according to the detected temperature.

[0014] Preferably, a rapping motor is fixed to the outer wall of the cathode rapping insulation box, the output shaft of the rapping motor is fixed to one end of the porcelain column through a first coupling, and the other end of the porcelain column is fixed to one end of the rapping shaft through a second coupling. The rapping motor drives the porcelain column to rotate and then drives the rapping shaft to rotate, the porcelain column, the first coupling and the second coupling are all located outside the cathode rapping insulation box, the rapping shaft is located in the electric field, and the rapping motor is located on the side of the cathode rapping insulation box relative to the rapping shaft.

[0015] Preferably, the cathode rapping insulation box is detachably connected to a bottom plate; a side wall of the cathode rapping insulation box relative to the rapping motor is a quartz plate, and a through hole is provided on the panel of the quartz plate to pass the rapping shaft; wherein the bottom plate and the quartz plate are both located in the electric field. By sealing the cathode rapping insulation box with the bottom plate and the quartz plate, the amount of dust accumulated in the cathode rapping insulation box can be effectively reduced, and the creepage of the porcelain column can be reduced.

[0016] Preferably, the top wall of the cathode rapping insulation box is provided with an inspection port; a heating pipe is fixed in the cathode rapping insulation box, and the heating pipe and the purge pipe are symmetrically arranged on both sides of the axis of the porcelain column. The inspection port can facilitate the maintenance of the purge pipe and the porcelain column; when the heating box is not started, the temperature in the cathode rapping insulation box can be increased by the heating pipe to prevent the cathode rapping insulation box from exchanging heat with the outside due to excessively high flue gas temperature, thereby preventing condensed water from being generated on the outer wall of the cathode rapping insulation box and preventing the porcelain column from breaking.

[0017] Preferably, the outer walls of the heating box and the hot air duct are both wrapped with thermal insulation cotton, which can reduce heat loss and energy consumption.

[0018] Preferably, the length direction of the purge pipe is parallel to the axis of the porcelain column, the two ends of the purge pipe are closed, a plurality of purge holes are opened on its outer wall, and the purge pipe and the hot air pipe are arranged perpendicular to each other. The porcelain column can be purged in all directions through the purge holes to prevent smoke and dust from adhering to the porcelain column, thereby increasing the service life of the porcelain column.

[0019] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a hot air blowing device for a porcelain column of an electrostatic precipitator, which uses hot air to blow the cathode rapping insulation box and the porcelain column, and the cathode rapping insulation box is added with a quartz plate and a bottom plate, which effectively reduces the amount of dust accumulated in the cathode rapping insulation box, reduces the creepage of the porcelain column, prolongs the service life of the porcelain column, and improves the operating efficiency of the electrostatic precipitator. The present invention has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the hot air blowing device structure is provided for the present invention;

[0022] Figure 2 A cross-sectional view of a cathode rapping insulation box provided by the present invention;

[0023] Figure 3 A schematic diagram of the connection between the cathode rapping insulation box and the electric field provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the quartz plate structure provided by the present invention.

[0025] in,

[0026] 1-control box; 2-blowing mechanism; 21-motor; 22-blower; 3-heating box; 4-hot air pipe; 41-thermal resistor; 42-purge valve; 5-cathode vibration insulation box; 51-inspection port; 52-end cover; 53-quartz plate; 54-bottom plate; 55-heating tube; 6-porcelain column; 7-purge pipe; 8-vibration motor; 9-vibration shaft; 10-electric field. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Participate in the Figures 1 to 4 The embodiment of the present invention discloses a hot air blowing device for a porcelain column of an electrostatic precipitator, comprising a cathode rapping insulation box 5, a porcelain column 6, a rapping shaft 9, a blowing pipe 7, a blast mechanism 2 and a heating box 3;

[0029] The cathode rapping insulation box 5 is located outside the electric field 10, the porcelain column 6 is rotatably connected to the inner cavity of the cathode rapping insulation box 5, one end of the rapping shaft 9 is located in the electric field 10 of the electric precipitator, and the other end penetrates a side wall of the cathode rapping insulation box 5 and is fixed to one end of the porcelain column 6; the purge pipe 7 is fixed on the inner wall of the cathode rapping insulation box 5 to purge the porcelain column 6;

[0030] The air inlet of the heating box 3 is connected to the air outlet of the blowing mechanism 2 , and the air outlet of the heating box 3 is connected to the inner cavity of the purge pipe 7 through the hot air pipe 4 to input hot air into the purge pipe 7 .

[0031] During the operation of the electrostatic precipitator, a high-voltage direct current is used to generate power. The present invention utilizes a cathode vibration insulation box to position the porcelain column outside the electric field, delivers cold air through a blower mechanism, utilizes a heating box to heat the cold air to form hot air, and delivers the hot air through a hot air pipe into a purge pipe in the cathode vibration insulation box. The purge pipe purges the porcelain column, which can effectively reduce the amount of dust accumulated in the cathode vibration insulation box, thereby reducing porcelain column creepage, extending the service life of the porcelain column, and improving the operating efficiency of the electrostatic precipitator.

[0032] See attached Figure 1 The blowing mechanism 2 includes a motor 21 and a blower 22, the motor 21 is drivingly connected to the blower 22, and the air outlet of the blower 22 is connected to the air inlet of the heating box 3 through an air supply pipe.

[0033] The motor power is 5.5kW, and the motor drives the blower to rotate and blow out cold air.

[0034] In order to further optimize the above technical solution, the air inlet of the blower 22 is rotatably connected with a flap valve to adjust the air intake of the blower 22. The flap valve is provided with an opening indicator, which can clearly know the opening of the flap valve, and the delivery amount of cold air can be adjusted by adjusting the opening size of the flap valve.

[0035] In order to further optimize the above technical solution, a thermal resistor 41 is fixed to one end of the hot air pipe 4 close to the heating box 3 to detect the hot air temperature; a purge valve 42 is fixed to one end of the hot air pipe 4 close to the cathode rapping insulation box 5 to adjust the hot air purge volume.

[0036] The range of the thermal resistor is 250℃, the power of the heating box is 120kW, and the temperature of the heating box after heating the cold air is detected by the thermal resistor; Figure 1 As shown, there are 8 purge valves, and the purge air volume of the hot air can be controlled by adjusting the opening of the purge valve; the specification of the hot air pipe is DN200mm, which can effectively ensure the transportation of hot air.

[0037] In this embodiment, a control box 1 is also included, and the control box 1 is electrically connected to the motor 21, the heating box 3 and the thermal resistor 41. The control box can realize automatic control, and the control box controls the motor to rotate to transport cold air. The control box can adjust the heating power of the heating box according to the hot air temperature detected by the thermal resistor through temperature setting.

[0038] In order to further optimize the above technical solution, a rapping motor 8 is fixed to the outer wall of the cathode rapping insulation box 5, and the output shaft of the rapping motor 8 is fixed to one end of the porcelain column 6 through a first coupling, and the other end of the porcelain column 6 is fixed to one end of the rapping shaft 9 through a second coupling. The axis of the rapping motor output shaft, the axis of the porcelain column and the axis of the rapping shaft coincide, the rapping shaft is located in the electric field, the porcelain column is located in the cathode rapping insulation box, and the rapping motor is located outside the cathode rapping insulation box. Through this layout, while ensuring that the electric dust collection is effective, the porcelain column will not be in the electric field, and the cathode rapping insulation box can reduce the creepage of the porcelain column. At the same time, the inner cavity of the porcelain column and the cathode rapping insulation box is purged with a purge pipe, which can effectively reduce the dust accumulation in the cathode rapping insulation box and increase the service life of the porcelain column.

[0039] In order to further optimize the above technical solution, the cathode rapping insulation box 5 is detachably connected to a bottom plate 54; a side wall of the cathode rapping insulation box 5 relative to the rapping motor 8 is a quartz plate 53, and a through hole is opened on the panel of the quartz plate 53 to pass the rapping shaft 9; wherein, the bottom plate 54 and the quartz plate 53 are both located in the electric field 10.

[0040] The bottom and one side of a conventional cathode rapping insulation box are open in design. The present invention can reduce the amount of dust accumulated in the cathode rapping insulation box by adding a bottom plate and a quartz plate to the cathode rapping insulation box.

[0041] The bottom plate has a specification of 538×850mm and is fixed to the bottom of the cathode rapping insulation box by nuts; Figure 4As shown, the specification of the quartz plate is 600×600mm. The panel of the quartz plate is divided into two pieces. The two panels are butt-jointed to form a whole quartz plate. A hole is opened in the middle of the quartz plate. The hole specification is φ240mm. The hole diameter is larger than the outer diameter of the vibration shaft. The quartz plate is fixed in the electric field by a 30×30mm angle steel.

[0042] In order to further optimize the above technical solution, an inspection port 51 is provided on the top wall of the cathode rapping insulation box 5, and the inspection port 51 is covered with an end cover 52; a heating pipe 55 is fixed in the cathode rapping insulation box 5, and the heating pipe 55 and the purge pipe 7 are symmetrically arranged on both sides of the axis of the porcelain column 6. The inspection port can facilitate the maintenance of the purge pipe and the porcelain column; when the heating box is not started, the temperature in the cathode rapping insulation box can be increased by the heating pipe, so as to prevent the cathode rapping insulation box from exchanging heat with the outside due to excessively high flue gas temperature, thereby generating condensed water on the outer wall of the cathode rapping insulation box, and preventing the porcelain column from breaking.

[0043] In order to further optimize the above technical solution, prevent heat loss and reduce energy consumption, the outer walls of the heating box 3 and the hot air duct 4 are wrapped with thermal insulation cotton.

[0044] In this embodiment, the length direction of the purge tube 7 is parallel to the axis of the porcelain column 6, the two ends of the purge tube 7 are closed, and a plurality of purge holes are opened on its outer wall. The purge tube 7 and the hot air pipe 4 are arranged perpendicular to each other.

[0045] The purge hole diameter is φ10mm, and the purge hole and the porcelain column form an angle of 58°, which can ensure that the inner cavity of the cathode rapping insulation box and the porcelain column are purged at the same time.

[0046] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot air blowing device for a porcelain column of an electrostatic precipitator, characterized in that: It comprises a cathode rapping insulation box (5), a porcelain column (6), a rapping shaft (9), a purge pipe (7), an air blowing mechanism (2) and a heating box (3); The cathode rapping insulation box (5) is located outside the electric field (10) of the electrostatic precipitator, the porcelain column (6) is rotatably connected to the inner cavity of the cathode rapping insulation box (5), one end of the rapping shaft (9) is located in the electric field (10), and the other end passes through a side wall of the cathode rapping insulation box (5) and is fixed to one end of the porcelain column (6); the purge pipe (7) is fixed on the inner wall of the cathode rapping insulation box (5) to purge the porcelain column (6); The air inlet of the heating box (3) is connected to the air outlet of the blowing mechanism (2), and the air outlet of the heating box (3) is connected to the inner cavity of the blowing pipe (7) through the hot air pipe (4) to input hot air into the blowing pipe (7).

2. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 1 is characterized in that: The air blowing mechanism (2) comprises a motor (21) and a blower (22); the motor (21) is transmission-connected to the blower (22); and the air outlet of the blower (22) is connected to the air inlet of the heating box (3) via an air supply pipe.

3. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 2, characterized in that: A thermal resistor (41) is fixed to one end of the hot air pipe (4) close to the heating box (3) to detect the hot air temperature; and a purge valve (42) is fixed to one end of the hot air pipe (4) close to the cathode rapping insulation box (5) to adjust the hot air purge volume.

4. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 2, characterized in that: The air inlet of the blower (22) is rotatably connected to a flap valve to adjust the air intake volume of the blower (22).

5. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 3, characterized in that: It also comprises a control box (1), wherein the control box (1) is electrically connected to the motor (21), the heating box (3) and the thermal resistor (41) respectively.

6. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 1, characterized in that: A rapping motor (8) is fixed to the outer wall of the cathode rapping insulation box (5), and the output shaft of the rapping motor (8) is fixed to one end of the porcelain column (6) through a first coupling, and the other end of the porcelain column (6) is fixed to one end of the rapping shaft (9) through a second coupling.

7. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 6, characterized in that: The cathode rapping insulation box (5) is detachably connected to a bottom plate (54); a side wall of the cathode rapping insulation box (5) opposite to the rapping motor (8) is a quartz plate (53), and a through hole is provided on the panel of the quartz plate (53) for passing the rapping shaft (9); wherein the bottom plate (54) and the quartz plate (53) are both located in the electric field (10).

8. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 6, characterized in that: The top wall of the cathode rapping insulation box (5) is provided with an inspection port (51); a heating tube (55) is fixed inside the cathode rapping insulation box (5), and the heating tube (55) and the purge tube (7) are symmetrically arranged on both sides of the axis of the porcelain column (6).

9. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 1, characterized in that: The outer walls of the heating box (3) and the hot air pipe (4) are both wrapped with thermal insulation cotton.

10. The hot air blowing device for the porcelain column of an electrostatic precipitator according to claim 1, characterized in that: The length direction of the purge pipe (7) is parallel to the axis of the porcelain column (6), the two ends of the purge pipe (7) are closed, and a plurality of purge holes are opened on its outer wall. The purge pipe (7) and the hot air pipe (4) are arranged perpendicular to each other.

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