CN215612356U - Electrode insulation's dust pelletizing system - Google Patents

Abstract

The embodiment of the utility model provides a dust removal system with an insulated electrode, which comprises an electrostatic dust suppression device with an insulating component; the electrostatic dust suppression device with the insulation component comprises a metal cylinder 5, a cathode 3 and a conveyer belt 6, wherein the metal cylinder 5 is covered above the conveyer belt 6; the cathode 3 is arranged in the metal cylinder 5; the electrostatic dust suppression device with the insulation assembly further comprises: the cathode 3 is connected to the metal cylinder 5 through the insulating assembly; the cathode 3 is a star-shaped metal plate, the star-shaped metal plate is provided with a plurality of sharp corners, each sharp corner is provided with a copper-clad tip, and the surface of each copper-clad tip is covered with copper. The insulating assembly constructs a positive pressure dry air small environment, so that dust is difficult to attach to the insulating assembly and the periphery, and the short circuit between the metal cylinder and the cathode is avoided. The surface of the sharp corner is provided with copper, dust particles after charging do not react with the copper to form small balls on the sharp corner during discharging, and the sharp corner of the electrode is not consumed.

Description

Electrode insulation's dust pelletizing system

Technical Field

The utility model relates to the field of dust removal, in particular to a dust removal system with an insulated electrode.

Background

In the industries of ore transportation, ore crushing, ore dressing, cement, thermal power generation, sintering and the like where powder or crushed materials are transported, a belt conveyor is usually adopted for transporting the materials, so that dust often floats in the air and the air pollution is very serious. The materials are usually dedusted during the transport by the belt conveyor.

In the process of implementing the utility model, the applicant finds that at least the following problems exist in the prior art:

when the humidity of the materials conveyed by the belt conveyor is higher, the dust removal effect is poor at present.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an electrode insulation dust removal system, which is characterized in that a positive pressure clean air small environment is constructed by an insulation assembly, so that flying dust with high humidity is difficult to adhere to the insulation assembly and the periphery, and a metal cylinder and a cathode are prevented from being short-circuited. The copper coated tip surface of the sharp corner is covered with copper, dust particles after charging do not react with copper to form small balls on the sharp corner during discharging, the sharp corner of the electrode is not consumed, and the tip discharging of the electrode is ensured.

To achieve the above object, an embodiment of the present invention provides an electrode-insulated dust removing system, including an electrostatic dust suppressing device having an insulating member; the electrostatic dust suppression device with the insulation component comprises a metal cylinder, a cathode and a conveyer belt, wherein the metal cylinder is covered above the conveyer belt; the cathode is arranged in the metal cylinder;

the electrostatic dust suppression device with the insulation assembly further comprises: the cathode is connected to the metal cylinder through the insulating assembly;

the cathode is a star-shaped metal plate, the star-shaped metal plate is provided with a plurality of sharp corners, each sharp corner is provided with a copper-coated tip, and the surface is coated with copper.

Preferably, each sharp corner of the star-shaped metal plate is a sharp corner with two sides having a real intersection point; the copper-clad tip comprises the solid intersection points, and a pattern formed by a connecting line of the solid intersection point of each sharp corner is a perfect circle or an ellipse; and the number of the first and second groups,

the number of sharp corners of the star-shaped metal plate is 8-11, specifically 8, 9, 10 or 11.

Preferably, the star-shaped metal plate has an anticorrosive coating on the surface except the copper-clad tip, and/or the inner side of the metal cylinder is coated with a non-conductive film.

Preferably, the system further comprises a health management system, wherein the health management system is used for receiving working parameters of the dust removal system during working and pre-judging the fault occurrence probability of the dust removal system according to the received working parameters of the dust removal system during working; wherein the operating parameters include voltage and current.

Preferably, the dust suppression device further comprises a dust suppression space which is formed by a running conveying belt and the metal cylinder together and used for suppressing dust airflow; the section shape of the metal cylinder body is changed along the running direction of the conveyer belt according to a set rule, and the conveyer belt runs within a preset speed range; in the process of the running of the conveyer belt, the pressure of the dust suppression space is changed along with the change of the section shape of the metal cylinder, and the running of dust along the track of the initial speed direction of the conveyer belt is disturbed.

Preferably, the insulation assembly comprises: the positive pressure cover body is covered on the sealing plate;

the positive pressure cover body is provided with a cover top and a cover wall connected to the cover top, and the cover wall is positioned below the cover top; the sealing plate is connected with the cover wall of the positive pressure cover body in a gapless manner;

the sealing plate and the cover wall of the positive pressure cover body form a positive pressure airflow cavity; the positive pressure gas flow cavity is positioned between the cathode and the cover top;

the gas transmission pipe is provided with a gas inlet end and a gas outlet end, the gas outlet end is arranged in the positive pressure gas flow cavity and is positioned below the sealing plate, and positive pressure gas discharged from the gas transmission pipe gas outlet end forms a positive pressure gas flow area in the positive pressure gas flow cavity below the sealing plate.

Preferably, one end of the insulator is connected to the metal cylinder, and the other end of the insulator is arranged in the positive pressure cover body and is positioned between the sealing plate and the cover top; alternatively, the first and second electrodes may be,

one end of the insulator is connected to the metal cylinder and is arranged above the lower edge of the positive pressure gas flow area below the sealing plate and in the side edge of the positive pressure gas flow area;

the insulator is provided with a plurality of horizontal insulating thin plates which are arranged at intervals in the vertical direction.

Preferably, the insulation assembly further comprises a baffle plate, the baffle plate is arranged on the cover wall connected to the positive pressure cover body in the positive pressure cover body, and the baffle plate is arranged below the sealing plate; the guide plate is provided with a guide hole, and the arrangement direction of the guide hole is a vertical direction;

the heat insulation plate further comprises a heat insulation layer attached to the plate surface of the guide plate, and the heat insulation layer is perlite filling material.

Preferably, the temperature control device further comprises a temperature control part for adjusting the temperature of the positive pressure gas entering the air inlet end of the air conveying pipe, and the temperature control part is arranged at the air inlet end of the air conveying pipe.

Preferably, the positive pressure cover body is a barrel-shaped body, and the axis of the barrel-shaped body is in the vertical direction; and the number of the first and second groups,

the air inlet end of the air conveying pipe is arranged outside the metal cylinder body and penetrates through the cover top of the positive pressure cover body, the air outlet end of the air conveying pipe penetrates through the sealing plate and enters the positive pressure airflow cavity, and the air conveying pipe is parallel to the axis direction of the barrel body.

The insulating assembly further comprises a connecting rod, the connecting rod is sleeved in the insulator, one end of the connecting rod is connected to the metal cylinder, and the other end of the connecting rod is connected to the cathode.

The technical scheme has the following beneficial effects: the positive-pressure clean air small environment is constructed through the insulating assembly, so that flying dust with high humidity is difficult to adhere to the insulating assembly and the periphery, the existence of a path for discharging caused by static charge creepage is fundamentally eliminated, and the metal cylinder and the cathode are insulated and reliable even in a high-humidity environment, and the effect is good. The surface of the tip of the sharp corner is covered with copper, and dust particles after charging do not react with the copper to form small balls on the sharp corner during discharging, so that the sharp corner of the electrode is not consumed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an isometric view of an electrode-insulated dust extraction system (showing primarily the insulation assembly and cathode) according to an embodiment of the present invention;

FIG. 2 is a schematic view of a star-shaped metal plate 31 according to an embodiment of the present invention; FIG. 3 is a front view of FIG. 1;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a full front view of FIG. 1;

FIG. 6 is an isometric view of another electrode-insulated dust extraction system (showing some components) according to an embodiment of the present invention;

FIG. 7 is a front view of FIG. 6;

figure 8 is an axial view of another electrode-insulated dust extraction system (shown primarily with the insulation assembly and cathode) of an embodiment of the utility model;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a left side view of FIG. 8;

FIG. 11 is a full front view of FIG. 8 (collectively composed of views (a) and (b));

FIG. 12 is a cross-sectional view A-A of FIG. 11;

fig. 13 is a cross-sectional view B-B of fig. 12.

The reference numerals are represented as:

3. a cathode; 4. a vibrator; 5. a metal cylinder; 6. a conveyor belt; 7. a baffle; 8. a sealing plate; 9. a positive pressure hood; 10. an insulator; 104. an insulating assembly; 11. perlite filler; 13. a gas delivery pipe; 14. a connecting rod; 32. coating copper on the tip; 31. a star-shaped metal plate; 101. a dust locking chamber; 102. a transition box;

1. a conveyor belt transfer rack; 2. a viewing port; 12. a high voltage lead; 15. a support frame; 16. a negative plate connecting pipe; 107. a water vapor control box; 108. a main tracheal tube; 109. a water main; 110. an atomizing spray head; 114. protecting the skin; 115. a leather protection layering; 116. a bolt; 118. clamping the bracket; 119. a protective bracket; 120. a vibrator support; 121. an electric control cabinet; 122. a high voltage output line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 13, in connection with an embodiment of the present invention, there is provided an electrode-insulated dust removal system, including an electrostatic dust suppression device having an insulating member; the static dust suppression device with the insulation component comprises a metal cylinder 5, a cathode 3 and a conveyer belt 6, wherein the conveyer belt 6 is arranged on a conveyer belt conveying frame 1 and used for conveying ores, cement and the like, and the conveyer belt 6 is used for conveying the ores, the cement and the like. The air will now have airborne particles of these materials floating therein. The metal cylinder 5 covers the conveyer belt 6, namely covers the ore, the cement and the like, so that dust particles floating in the air of the ore and the cement can be blocked in the metal cylinder 5, and a semi-closed cavity is formed. The electrostatic dust suppression device with the insulating assembly is supported on the conveyor carousel 1 by a support frame 15.

The metal cylinder 5 is covered above the conveying belt 6 to form a semi-sealed cavity with the conveying belt 6; the cathode 3 is arranged in the semi-sealed cavity, and the cathode 3 is connected to the metal cylinder 5 in an insulating manner; the device also comprises a direct current power supply which can be a high-voltage direct current power supply, two poles of the power supply are respectively connected with the metal cylinder 5 and the cathode 3 through a high-voltage lead 12, the metal cylinder 5 and the cathode 3 (also called a corona pole) are not communicated, no current is generated, and a high-voltage electric field can be generated between the metal cylinder 5 and the cathode 3. The dust particles floating in the metal cylinder 5 are removed by the principle of electrostatic adsorption.

Because the cathode electrode generates corona discharge and the gas is ionized, at the moment, negatively charged gas ions move towards the metal cylinder 5 under the action of the electric field force and collide with floating dust particles in the movement, the negatively charged gas ions charge the dust particles with negative electricity, the charged dust particles move towards the metal cylinder 5 under the action of the electric field force and emit charged electrons after reaching the metal cylinder 5, the dust particles are deposited on the metal cylinder 5, and the purified gas is discharged out of the dust suppression device, namely, is discharged out of a dust removal system insulated by the electrode, so that the dust particles floating in the air are greatly reduced.

The electrostatic dust suppression device with the insulation assembly further comprises: the insulating assembly 104 is used for connecting the cathode 3 to the metal cylinder 5 through the insulating assembly 104; the short circuit between the cathode 3 and the metal can 5 can be prevented by the insulating member 104. Especially, when the humidity of the transported material is high (for example, 80% to 99%), if the insulating assembly 104 is not used, the wet dust particles are liable to continuously adhere to the cathode 3 and/or the metal cylinder 5, so that the cathode 3 and/or the metal cylinder 5 have a net charge creepage phenomenon, when the accumulated wet dust particles are large enough, the cathode 3 and the metal cylinder 5 are short-circuited, and in severe cases, the fire, arc and burnout accidents are caused. Therefore, the insulating component 104 is used for connecting the cathode 3 to the metal cylinder 5 and isolating the cathode from the metal cylinder 5, so that the accidents can be avoided, the dust suppression device can work normally, and the electrode-insulated dust removal system works normally.

The cathode 3 is a star-shaped metal plate 31, the star-shaped metal plate 31 is provided with a plurality of sharp corners, each sharp corner is provided with a copper-coated tip 32, the copper-coated tip 32 is positioned at the point of the sharp corner and comprises the sharp point, the surface of the copper-coated tip 32 is coated with copper, the sharp corner is the tip, and the surface of the tip is coated with copper. Because the dust contains iron ore components, charged dust particles can react with iron in the iron ore components during discharging to form small balls on sharp corners; if the sharp corner is made of iron or steel, the iron or steel on the sharp corner can be consumed, so that the sharp corner disappears, and the point discharge efficiency is influenced. However, if the surface of the sharp corner tip is copper, charged dust particles cannot react with the copper during discharging, small balls are formed on the sharp corner, and the sharp corner of the electrode cannot be consumed. And, the charged dust particles react with iron in the iron ore component during discharge, and the amount of the charged dust particles adhering to copper is also reduced because the included angle is copper.

Also, the electrostatic dust suppression device is mounted on a protective bracket 119 (the protective bracket 119 is connected by a bracket clasp 118). The lower end of the metal cylinder 5 is also provided with a sheath 114, and the sheath 114 is fixed at the lower end of the metal cylinder 5 through a sheath pressing strip 115 and a bolt 116.

When the electrode insulation dust removal system works, ore, cement and the like are conveyed to enter the electrode insulation dust removal system from the on-site blanking port and usually directly enter the metal cylinder 5. Of course, according to the requirement of dust removal, before entering the metal cylinder 5, the transition box 102 is arranged below the field blanking port, and the ore, the cement and the like firstly enter the transition box 102 and then enter the metal cylinder 5. The transition box 102 is connected to the electrostatic dust suppression device with the insulation component; the transition box 102 comprises a dust locking chamber 101, an atomizing spray head 110 and a water vapor control box 107 which is arranged outside the dust locking chamber 101 and is used for controlling the atomizing spray head 110; the metal cylinder 5 is provided with a first port, the dust locking chamber 101 is connected to the first port of the metal cylinder 5, and the atomizing nozzle 110 is arranged at the top of the inner side of the dust locking chamber 101. In the transition box 102 there is a dust lock chamber 101 for the preliminary collection of dust from ore, cement, etc. An atomizing nozzle 110 is arranged at the top end inside the transition box 102, so that a part of dust can fall downwards, and the mist spraying of the atomizing nozzle 110 is controlled by the steam control box 107. Water is provided to the system through water mains 109. System power is delivered through high voltage output line 122; and; the system control is controlled by the electric elements in the electric control cabinet 121.

Preferably, each sharp corner of the star-shaped metal plate 31 is a sharp corner with a solid intersection point on two sides, and the sharp point is the solid intersection point; the copper-clad tip 32 comprises the solid intersection points, and a pattern formed by a connecting line of the solid intersection point of each sharp angle is a perfect circle or an ellipse; and the number of the sharp corners of the star-shaped metal plate 31 is 8-11, specifically 8, 9, 10 or 11, so that better discharge efficiency is obtained, and simultaneously, the star-shaped metal plate can be matched with the shape of the metal cylinder 5, and the pattern formed by the connecting lines of the sharp corners is a perfect circle or an ellipse. And the distance between the discharge point and the metal cylinder 5 is adjusted according to the environment, the dust type and the electric field intensity, so as to obtain better discharge efficiency.

Preferably, the surface of the star-shaped metal plate 31 except the copper-clad tip 32 is provided with an anticorrosive coating, the anticorrosive coating is a non-conductive film or a zinc coating, and the non-conductive film or the zinc coating is attached to the electrode, so that dust adhesion on the electrode is reduced, mainly to iron ores, which are conductors. The inner side of the metal cylinder 5 is coated with a non-conductive film, so that dust adhesion on the electrode is reduced, and the electrode is mainly used for iron ores which are conductors, so that the discharge performance of the electrode is improved.

Preferably, the system further comprises a health management system, which receives the working parameters of the dust removal system during working and pre-judges the probability of the occurrence of the fault of the dust removal system according to the received working parameters of the dust removal system during working. The operating parameters include voltage and current, with current being the dominant. Specifically, the total voltage and the total current of the system are compared, and all units are also compared. The voltage and current of the star-shaped metal plate 31 are also included. When the current and voltage are reduced, the discharge efficiency is reduced, and the damage of parts or dust accumulation is possible. The specific decision depends on the algorithm. The time for acquiring data is adjusted according to specific conditions, for example, data is acquired once in 5 minutes, data is transmitted once in one hour, and the working parameters are acquired through corresponding sensors; the health management system compares various working parameter values with respective limit values or comprehensively considers a plurality of working parameter values to pre-judge the possible faults of the electrode-insulated dust removal system, so that the faults can be processed in advance to avoid occurring, or a coping scheme can be proposed in advance when the faults occur to solve the processing in time.

Preferably, a dust suppression space for suppressing dust airflow is formed by the running conveying belt 6 and the metal cylinder 5; the section shape of the metal cylinder 5 is changed according to a set rule along the running direction of the conveyer belt 6, and the conveyer belt 6 runs within a preset speed range; during the operation of the conveyor belt 6, the pressure of the dust suppression space is changed along with the change of the section shape of the metal cylinder 5, and the dust is disturbed to move along the track of the initial speed direction of the conveyor belt 6. (dust obtains the initial velocity because of the belt motion, so want to manage the dust, except letting dust charged, can also make the influence on dust in the speed, dust before charging, when conveyer belt 6 initial velocity is below 2 meters/second, can fly more than 200 CM. metal cylinder 5 is the positive pole on the one hand, on the other hand metal cylinder 5 shape under the air current effect that conveyer belt 6 drove, also can form an air current field, cause the change of pressure, cause the interference to the flight route of dust along conveyer belt 6 direction, so metal cylinder 5 shape must consider the area of positive pole, site installation's position, also must consider the interference to dust.

Preferably, the insulation assembly 104 comprises: the positive pressure shield comprises a positive pressure shield body 9 (also called a positive pressure environment shield), a sealing plate 8, an insulator 10 and a gas pipe 13 (positive pressure gas is provided by a gas pipe main pipeline 108) for conveying positive pressure gas, wherein the positive pressure shield body 9 is covered on the sealing plate 8; the insulator 10 is made of silica gel.

The positive pressure hood body 9 has a hood top and a hood wall connected to the hood top, and the hood wall is located below the hood top. The sealing plate 8 is connected to the cover wall of the positive pressure cover body 9 without a gap, and the sealing plate 8 and the cover wall of the positive pressure cover body 9 form a positive pressure airflow cavity; the positive pressure gas flow cavity is positioned between the cathode 3 and the cover top; that is, the sealing plate 8 is used to seal the space between the cover top of the positive pressure cover body 9 and the sealing plate 8, so that the sealing plate 8 and the cover wall of the positive pressure cover body 9 form a small sealed space (positive pressure airflow chamber), wherein the pressure of the positive pressure airflow is greater than 2kg, and is generally provided by the positive pressure cover body 9.

The insulator 10 is connected to the metal cylinder 5, and the insulator 10 is arranged below the cover top of the positive pressure cover body 9, above the lower edge of the positive pressure airflow region and in the side edge of the positive pressure airflow region, such as between the sealing plate 8 and the cover top; that is, the insulator 10 vertically penetrates through the top of the positive pressure cover 9, so that the metal cylinder 5 and the cathode 3 can be isolated, and the cathode 3 and the metal cylinder 5 cannot form a current path.

The sealing plate 8 and the cover wall of the positive pressure cover body 9 positioned below the sealing plate 8 form a positive pressure airflow cavity; the positive pressure gas flow chamber is between the cathode 3 and the sealing plate 8.

The gas pipe 13 is provided with a gas inlet end and a gas outlet end, positive pressure gas is provided through a main gas pipe, the gas outlet end is arranged in the positive pressure gas flow cavity and is positioned below the sealing plate 8, and positive pressure gas discharged from the gas outlet end of the gas pipe 13 forms a positive pressure gas flow area in the positive pressure gas flow cavity below the sealing plate 8.

When the system operates, when the positive pressure gas is continuously conveyed into the positive pressure gas flow region through the gas pipe 13, the positive pressure gas (compressed gas) is discharged through the exhaust end of the gas pipe 13 below the sealing plate 8 because the pressure of the positive pressure gas is greater than a standard atmospheric pressure, and the clean positive pressure gas is gathered below the sealing plate 8 to form a protective gas curtain, so that the formed positive pressure clean air small environment is formed. So that high-humidity dirty air (with standard atmospheric pressure close to atmospheric pressure) can not enter a sealed space between the sealing plate 8 and the cover top, thereby thoroughly preventing dust from continuously adhering to the cathode 3 and/or the metal cylinder 5, finally eliminating a path of short circuit between the cathode and the anode caused by static charge creepage, and solving the problem of insulation damage caused by ignition, arc discharge and burning. From the field experiment process, the electrostatic field constructed by the cathode and the anode which are supported and connected by the insulating component 104 has obvious electrostatic dust suppression effect under the high-humidity working condition, stable and reliable operation and long service life, even if the cathode electrode is sprayed with water, the damage can not be caused, the damage of the whole electrostatic dust suppression device can not be caused, the dust suppression effect in the material conveying process of a belt conveyor (conveying belt) is ensured, and the environmental protection requirement is met.

Preferably, one end of the insulator 10 is connected to the metal cylinder 5, and the other end of the insulator 10 is disposed in the positive pressure housing 9 and between the sealing plate 8 and the housing top. Or, one end of the insulator 10 is connected to the metal cylinder 5 and is disposed on the lower edge of the positive pressure gas flow region below the sealing plate 8 and in the side edge of the positive pressure gas flow region. Or, one end of the insulator 10 is connected to the metal cylinder 5, and the other end of the insulator 10 is located at the lower part outside the positive pressure gas flow area. The insulation between the metal cylinder 5 and the cathode 3 is realized by the change of the connection position of the other end of the insulator 10. The connecting rod 14 is sleeved in the insulator 10.

Preferably, the insulation assembly 104 further comprises a baffle 7, the baffle 7 is arranged in the positive pressure hood 9 and connected to the hood wall of the positive pressure hood 9, and the baffle 7 is arranged below the sealing plate 8; the guide plate 7 is provided with a guide hole, and the guide hole is arranged in the vertical direction. When the internal components of the electrostatic dust suppression device are overhauled or the air pressure of positive pressure air does not meet the use requirement and fails, the guide plate 7 can prevent external dust from entering the positive pressure air flow region less. In addition, the guide plate 7 is provided with guide holes to flow outwards, the guide plate 7 gathers clean positive pressure gas to further form a protective air curtain (especially when the guide holes are uniformly distributed, the positive pressure airflow blown out through the guide holes is uniform, and the forming speed of the air curtain is high), so that high-humidity dirty air and insulating surfaces (connecting rods 14) and the cover body are further prevented, namely, the gas with dust particles (high-humidity dirty air) cannot enter the positive pressure airflow region from the guide holes and further cannot flow into a small sealed space in the sealing plate 8 and the positive pressure cover body 9, and a small positive pressure clean air environment is formed.

Preferably, the heat insulation plate also comprises a heat insulation layer attached to the surface of the flow guide plate 7, and the heat insulation layer is perlite filling material 11. In some high temperature environments, the perlite filler 11 blocks heat conduction, and high and low temperature gases are prevented from condensing into water drops after meeting, so that the reduction of the insulating property caused by the conduction of the water drops is avoided.

Preferably, the insulator 10 has a plurality of horizontal insulating sheets arranged at vertical intervals, so that the insulating property is improved, the electric conduction is avoided, and the dust is prevented from entering.

Preferably, the temperature control device further comprises a temperature control part for adjusting the temperature of the positive pressure gas entering the air inlet end of the air conveying pipe 13, and the temperature control part is arranged at the air inlet end of the air conveying pipe 13. Under the condition that the inlet end appears the condensate water, be used for adjusting the temperature of the air of inlet end through the piece that adjusts the temperature, specifically be: hot air (temperature range >70 ℃) is blown into the air inlet end through the temperature adjusting piece under certain air pressure, so that water is not formed in the positive pressure air flow zone.

Preferably, the positive pressure cover body 9 is the tubbiness body for the gas velocity of flow in the gaseous curtain of positive pressure in the positive pressure air current intracavity is impartial, and the air curtain is stable good, the axis of the tubbiness body is vertical direction, guide plate 7 is perpendicular the axis of the tubbiness body, the positive pressure gas that flows out from guide plate 7 then can be straight will blow to the dust granule, and the air current of air curtain also is in vertical direction and does not take place the slope, when negative pole 3 is a plurality of dispersed negative plates, and when negative pole 3 also set up vertically, because of the gas curtain to a negative plate slope and lead to the dust granule gathering on reverse another negative plate, make the concentration increase and increase the possibility that the dust granule meters into the positive pressure air current district. Therefore, the positive pressure cover body 9 is a barrel-shaped body, the axis of the barrel-shaped body is vertical, and the guide plate 7 is perpendicular to the axis of the barrel-shaped body, so that dust particles directly below the guide plate 7 cannot enter the space of the positive pressure cover body 9 above the sealing plate 8, and the dust particles can be maximally suppressed.

Preferably, the air inlet end of the air pipe 13 is arranged outside the metal cylinder 5, the air inlet end of the air pipe 13 penetrates through the top of the positive pressure cover body 9, the air outlet end of the air pipe 13 penetrates through the sealing plate 8 and enters the positive pressure air flow region, and the air pipe 13 is parallel to the axial direction of the barrel body. The positive pressure airflow pressure can not generate other components from input to output, and the pressure except the normal loss is completely transmitted into the positive pressure airflow region, so that the pressure of the positive pressure gas is fully used. The forming speed of the positive pressure gas curtain is ensured, and the continuous stability of the gas curtain is maintained in the whole process of positive pressure gas entering, so that external dust particles are tightly blocked outside and do not enter the insulating component 104, the dust particles cannot be adhered to the connecting cathode 3 and/or the metal cylinder 5, and the net charge creepage phenomenon cannot occur.

Preferably, the gas-supply pipe 13 has a plurality ofly, and is a plurality of the gas-supply pipe 13 equipartition is around the axis of tubbiness body, and a plurality of gas-supply pipes 13 can evenly be to the interior transportation positive pressure gas of positive pressure flow district for positive pressure gas can evenly be full of the positive pressure flow district fast at the initial stage of operation so that form the air curtain, and protection insulating assembly 104 keeps away from the dust particle.

Preferably, the sealing plate 8 and the flow guide plate 7 are arranged in parallel, so that positive pressure gas conveyed from the gas conveying pipe 13 can quickly form a protective gas curtain only by downward flowing without backflow.

Preferably, the insulating assembly 104 further includes a connecting rod 14, the connecting rod 14 is a metal sleeve, the connecting rod 14 is sleeved in the insulator 10, one end of the connecting rod 14 is connected to the metal cylinder 5, and the other end of the connecting rod 14 is connected to the cathode 3. And the connecting rod 14 runs through the guide plate 7 and the sealing plate 8, and when the connecting rod 14 runs through the guide plate 7 and the sealing plate 8, the contact place of the connecting rod 14 with the guide plate 7 and the sealing plate is ensured to be sealed so as to be isolated from the outside.

Preferably, a rapper 4 for rapping dust is also included, the rapper 4 being mounted on a rapper support 120; the vibrator 4 is arranged on the metal cylinder 5, and the vibrator 4 has the function that when more dust particles are adsorbed in the metal cylinder 5 and can not fall off naturally, the dust particles are vibrated down from the metal cylinder 5 by the vibrator 4.

Preferably, the dust collector further comprises an observation port 2 for observing the insulating assembly 104, wherein the observation port 2 is arranged on the metal cylinder 5 for observing whether the insulating assembly 104 is adsorbed by dust particles.

Preferably, the cathode 3 further includes a cathode plate connection tube 16 connected to the star-shaped metal plate 31; the star-shaped metal plate 31 and the metal cylinder 5 can accelerate the ionization speed of gas, accelerate the moving efficiency of dust particles to the metal cylinder 5 and improve the dust suppression effect. Meanwhile, a plurality of corresponding insulation assemblies 104 can be arranged for the plurality of star-shaped metal plates 31, so that each star-shaped metal plate 31 and the metal cylinder 5 are in an insulation state.

The star-shaped metal plate 31 is parallel to the cross section of the metal cylinder 5, so that the star-shaped metal plate 31 has a small overall size while the star-shaped metal plate 31 is ensured to have a short distance with the metal cylinder 5.

In a word, a positive-pressure clean air small environment is constructed by the insulating component 104, so that flying dust with high humidity is difficult to adhere to the insulating component 104 and the periphery, the existence of a path for connecting the positive electrode and the negative electrode to cause discharge due to static charge creepage is fundamentally eliminated, and the metal cylinder and the negative electrode are ensured to be insulated and reliable even in a high-humidity environment, and the effect is good. And the dust suppression device for the belt conveyor can not only have good dust suppression effect, but also run stably and reliably and have longer service life in a high-humidity environment.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the utility model.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. An electrode-insulated dust extraction system, comprising an electrostatic dust suppression device having an insulating assembly; the electrostatic dust suppression device with the insulation component comprises a metal cylinder (5), a cathode (3) and a conveyer belt (6), wherein the metal cylinder (5) is covered above the conveyer belt (6); the cathode (3) is arranged in the metal cylinder (5);

the electrostatic dust suppression device with the insulation assembly further comprises: the insulating assembly (104), the cathode (3) is connected to the metal cylinder (5) through the insulating assembly (104);

the cathode (3) comprises a star-shaped metal plate (31), the star-shaped metal plate (31) is provided with a plurality of sharp corners, each sharp corner is provided with a copper-clad tip (32), and copper is coated on the surface of each copper-clad tip (32).

2. The electrode-insulated dust-extraction system according to claim 1, characterized in that each cusp of the star-shaped metal plate (31) is a cusp whose two sides have a solid intersection point; the copper-clad tip (32) comprises the solid intersection points, and a pattern formed by a connecting line of the solid intersection point of each sharp angle is a perfect circle or an ellipse; and the number of the first and second groups,

the number of sharp corners of the star-shaped metal plate (31) is 8-11, specifically 8, 9, 10 or 11.

3. The electrode-insulated dusting system according to claim 1, characterized in that the star-shaped metal plate (31) has an anti-corrosion coating on its surface except the copper-clad tips (32) and/or the inner side of the metal cylinder (5) is coated with a non-conductive film.

4. The electrode-insulated dust removal system according to claim 1, further comprising a health management system for receiving operating parameters of the dust removal system during operation and for predicting a probability of occurrence of a fault in the dust removal system based on the received operating parameters of the dust removal system during operation; wherein the operating parameters include voltage and current;

the electrode-insulated dust extraction system further comprises a transition box (102), wherein the transition box (102) is connected to the electrostatic dust suppression device with the insulation component;

the transition box (102) comprises a dust locking chamber (101), an atomizing spray head (110) and a water vapor control box 107 which is arranged on the outer side of the dust locking chamber (101) and is used for controlling the atomizing spray head (110);

the metal cylinder body (5) is provided with a first port, the dust locking chamber (101) is connected to the first port of the metal cylinder body (5), and the atomizing nozzle (110) is arranged at the top of the inner side of the dust locking chamber (101).

5. The electrode-insulated dust-extraction system according to claim 1, further comprising a dust-suppression space formed by the running conveyor belt (6) and the metal cylinder (5) together for suppressing a dust-airflow belt; the section shape of the metal cylinder (5) is changed along the running direction of the conveyer belt (6) according to a set rule, and the conveyer belt (6) runs within a preset speed range; in the running process of the conveyer belt (6), the pressure of the dust suppression space is changed along with the change of the section shape of the metal cylinder (5), and the running of dust along the track of the initial speed direction of the conveyer belt (6) is disturbed.

6. The electrode-insulated dust extraction system of claim 1, wherein the insulation assembly (104) comprises: the positive pressure gas transmission device comprises a positive pressure cover body (9), a sealing plate (8), an insulator (10) and a gas transmission pipe (13) for transmitting positive pressure gas, wherein the positive pressure cover body (9) is covered on the sealing plate (8);

the positive pressure cover body (9) is provided with a cover top and a cover wall connected to the cover top, and the cover wall is positioned below the cover top; the sealing plate (8) is connected to the cover wall of the positive pressure cover body (9) without a gap;

the sealing plate (8) and the cover wall of the positive pressure cover body (9) form a positive pressure airflow cavity; the positive pressure gas flow chamber is between the cathode (3) and the cover top;

the air delivery pipe (13) is provided with an air inlet end and an air outlet end, the air outlet end is arranged in the positive pressure airflow cavity and is positioned below the sealing plate (8), and positive pressure air exhausted from the air outlet end of the air delivery pipe (13) forms a positive pressure airflow region in the positive pressure airflow cavity below the sealing plate (8).

7. The electrode-insulated dust extraction system of claim 6, wherein one end of the insulator (10) is connected to the metal cylinder (5), and the other end of the insulator (10) is disposed in the positive pressure housing (9) and between the sealing plate (8) and the housing top; alternatively, the first and second electrodes may be,

one end of the insulator (10) is connected to the metal cylinder (5) and is arranged on the lower edge of the positive pressure gas flow zone below the sealing plate (8) and in the side edge of the positive pressure gas flow zone;

wherein, the insulator (10) is provided with a plurality of horizontal insulating thin plates which are arranged at intervals in the vertical direction.

8. The electrode-insulated dust extraction system of claim 6, wherein the insulation assembly (104) further comprises a baffle (7), the baffle (7) being disposed in a hood wall connected to the positive pressure hood (9) within the positive pressure hood (9), and the baffle (7) being disposed below the seal plate (8); the guide plate (7) is provided with guide holes, and the arrangement direction of the guide holes is a vertical direction;

the air-conditioning system also comprises a heat insulation layer attached to the surface of the guide plate (7), wherein the heat insulation layer is perlite filler (11).

9. The electrode-insulated dust removal system according to claim 6, further comprising a temperature adjusting member for adjusting the temperature of the positive pressure gas entering the gas inlet end of the gas pipe (13), wherein the temperature adjusting member is disposed at the gas inlet end of the gas pipe (13).

10. The electrode-insulated dust extraction system of claim 6, wherein the positive pressure hood (9) is a barrel, the axis of which is vertical; and the number of the first and second groups,

the air inlet end of the air conveying pipe (13) is arranged outside the metal cylinder body (5), the air inlet end of the air conveying pipe (13) penetrates through the top of the positive pressure cover body (9), the air outlet end of the air conveying pipe (13) penetrates through the sealing plate (8) to enter the positive pressure airflow cavity, and the air conveying pipe (13) is parallel to the axial direction of the barrel body;

the insulation assembly (104) further comprises a connecting rod (14), the connecting rod (14) is sleeved in the insulator (10), one end of the connecting rod (14) is connected to the metal cylinder (5), and the other end of the connecting rod (14) is connected to the cathode (3).

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