Explosion-proof dust removal equipment

Abstract

The utility model relates to explosion-proof dust removal equipment which comprises a box body, a filter assembly, an air duct and a negative pressure assembly, the box body comprises a filter chamber, a negative pressure chamber, an air outlet and an air inlet connected with the filter chamber; reinforcing strips are arranged on the inner side walls of the filtering chamber and the negative pressure chamber; the filtering assembly is detachably arranged in the filtering chamber; the negative pressure assembly is arranged in the negative pressure chamber; the filtering assembly, the negative pressure assembly and the air outlet are sequentially connected through an air duct. According to the anti-explosion dust removal equipment, flammable and explosive dust is efficiently filtered, the damage range of dust explosion is reduced, and the anti-explosion performance is excellent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dust removal equipment technical field especially relates to a kind of explosion-proof dust removal equipment. BACKGROUND

[0002] Dust removal equipment is widely used in industry, mainly for collecting and processing dust, usually including filter device and negative pressure device. Filter device realizes the separation and collection of dust through filter medium (such as filter bag, filter core or filter cartridge);And negative pressure device, responsible for maintaining the negative pressure state inside the equipment to drive airflow, improve the filtering effect of filter device. Filter device and negative pressure device are often placed in a cavity to improve the integration of dust removal equipment. When processing high-temperature combustible and explosive dust, such as metal dust, wood dust, coal dust, etc., explosion is prone to occur at filter device, damaging the negative pressure equipment connected with filter device.

[0003] Therefore, how to provide a dust removal equipment, efficient filtration of combustible and explosive dust, reduce the damage range of dust explosion, excellent explosion-proof performance, is the technical problem to be solved in the field. INVENTION CONTENTS

[0004] To solve at least one of the above technical problems, the utility model provides an explosion-proof dust removal equipment, comprising: box, filter assembly, air duct and negative pressure assembly;

[0005] The box comprises: filter chamber, negative pressure chamber, air outlet and air inlet connected with the filter chamber;

[0006] The filter chamber and the negative pressure chamber are provided with reinforcing strips on the inner side wall;

[0007] The filter assembly is detachably arranged in the filter chamber;The negative pressure assembly is arranged in the negative pressure chamber;The filter assembly, the negative pressure assembly and the air outlet are connected in sequence through the air duct.

[0008] Further, the explosion-proof dust removal equipment further comprises: inerting assembly and air inlet pipeline connected with air inlet;

[0009] The inerting assembly is internally provided with inerting cavity, and the inerting cavity is communicated with the air inlet pipeline;

[0010] The inerting cavity stores inerting powder.

[0011] Further, the filter assembly is provided with explosion-proof flame-retardant coating;

[0012] The negative pressure assembly and the air duct are provided with protective cover.

[0013] Further, the explosion-proof dust removal equipment further comprises: relief assembly connected with one side of the filter chamber;

[0014] The relief assembly comprises a relief channel and an explosion-proof plate detachably arranged in the relief channel.

[0015] Further, the explosion-proof dust removal equipment further comprises a spark blocking piece arranged between the air inlet and the filter assembly.

[0016] The spark blocking piece is provided with a baffle at the front end and dust diversion grooves arranged at intervals at both sides.

[0017] Further, the air duct is in a "U" shape.

[0018] The first end of the air duct passes through the upper end of the filter chamber and the negative pressure chamber, and connects the filter assembly and the negative pressure assembly.

[0019] The second end of the air duct is provided with a secondary filter.

[0020] The secondary filter is connected to the negative pressure assembly at one end and connected to the air outlet at the other end.

[0021] The negative pressure assembly is arranged at the bottom of the air duct.

[0022] Further, the air duct comprises a first electrostatic compensation section and a second electrostatic compensation section.

[0023] The first electrostatic compensation section is arranged between the filter assembly and the negative pressure assembly.

[0024] The second electrostatic compensation section is arranged between the negative pressure assembly and the air outlet.

[0025] The first electrostatic compensation section and the second electrostatic compensation section are both made of flexible flame-retardant anti-static material.

[0026] Further, the negative pressure assembly further comprises an explosion-proof air speed meter, an explosion-proof differential pressure transmitter and a temperature sensor arranged in the air duct in sequence, and an alarm connected to the explosion-proof air speed meter, the explosion-proof differential pressure transmitter and the temperature sensor.

[0027] Further, the filter assembly comprises a filter cartridge, a dust hopper and a backflush cleaning piece connected to the filter cartridge.

[0028] The dust hopper is arranged below the filter chamber and is detachably connected to the filter chamber by a buckle lock.

[0029] Further, the backflush cleaning piece comprises a cleaning gas source, a pulse electromagnetic valve and a cleaning air duct.

[0030] The first end of the pulse electromagnetic valve is connected to the cleaning gas source, and the second end is connected to the filter cartridge through the cleaning air duct.

[0031] In this embodiment, an explosion-proof dust removal equipment is given; when in use, the combustible and explosive dust enters the filter chamber from the air inlet; under the negative pressure provided by the negative pressure assembly, the dust is separated from the mixed gas after being filtered by the filter assembly, and the dust falls below the filter chamber, while the gas is discharged from the air outlet through the air duct, realizing efficient filtering and separation of the combustible and explosive dust. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown according to the structures without creative labor. In the drawings, the same components are marked with the same reference numerals. The drawings are not drawn according to the actual proportion.

[0033] Figure 1 It is a schematic view of an embodiment of the explosion-proof dust removal equipment of the present application;

[0034] Figure 2 It is a left view of an embodiment of the explosion-proof dust removal equipment of the present application;

[0035] Figure 3 It is a schematic view of another embodiment of the explosion-proof dust removal equipment of the present application;

[0036] Figure 4 It is a schematic view of an embodiment of the spark blocking piece of the explosion-proof dust removal equipment of the present application. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or a middle element can be present at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a middle element can be present at the same time.

[0039] It should also be noted that if the present utility model embodiments involve directional indications, such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative positional relationship between the components, the movement conditions, etc. in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly. In addition, if the present utility model embodiments involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., such descriptions are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that all within the technical concept of the present utility model without deviating from the key points of the present utility model should be included in the protection scope of the present utility model.

[0040] The present utility model provides a kind of anti-explosion dust removal equipment, refer to Figure 1 And Figure 2 It is characterized by comprising: box 1, filter assembly 2, air duct 3 and negative pressure component 4;

[0041] Box 1 includes: filter chamber 11, negative pressure chamber 12, air outlet 13 and air inlet 14 connected with filter chamber;

[0042] Filter chamber 11 and negative pressure chamber 12, inner side wall is all provided with reinforcing strip;

[0043] Filter assembly 2 is detachably arranged in filter chamber 11;Negative pressure component 4 is arranged in negative pressure chamber 12;Filter assembly 2, negative pressure component 3 and air outlet 13 are sequentially connected by air duct 4.

[0044] In this embodiment, an explosion-proof dust removal device is given; when in use, the combustible and explosive dust enters the filter chamber from the air inlet; under the negative pressure provided by the negative pressure assembly, the dust is separated from the mixed gas after being filtered by the filter assembly, and the dust falls below the filter chamber, while the gas is discharged from the air outlet through the air duct, realizing efficient filtration and separation of the combustible and explosive dust. Due to the physical separation between the filter chamber and the negative pressure chamber, on the one hand, the interaction between the high-concentration dust environment and the key equipment in the negative pressure chamber is reduced, the risk of dust leakage and cross contamination is reduced, and the maintenance frequency of the negative pressure assembly is reduced; on the other hand, the combustible and explosive dust directly enters the filter chamber, resulting in a higher dust concentration in the filter chamber, and the filter chamber is more prone to dust explosion than the negative pressure chamber. This physical separation can effectively prevent the explosion wave from directly propagating to the negative pressure chamber when the dust explodes in the filter chamber, reducing the damage range of the combustible and explosive dust; at the same time, the filter assembly is detachably arranged in the filter chamber, so that even if the filter assembly is damaged due to explosion, it can be repaired or replaced in time, greatly improving the maintainability of the device. In addition, the reinforcing strips are installed on the side walls of the filter chamber and the negative pressure chamber, which can further reduce the damage caused by dust explosion and improve the explosion-proof performance of the device. Preferably, the reinforcing strips are steel strips arranged horizontally and / or vertically in the filter chamber and the negative pressure chamber, which can improve the structural strength of the filter chamber and the negative pressure chamber to improve the explosion-proof performance of the filter chamber and the negative pressure chamber. More preferably, the air inlet, the air outlet, and the connection between the air ducts of the negative pressure chamber and the filter chamber are provided with annular reinforcing strips to improve the structural strength of the weak link of the device and further improve the explosion-proof performance of the device. In summary, the explosion-proof dust removal device provided by the present application can efficiently filter the combustible and explosive dust, reduce the damage range of dust explosion, and has excellent explosion-proof performance.

[0045] Preferably, referring to Figure 1 and Figure 3 , the front end of the filter chamber 11, the top end of the filter chamber 12, the top end of the negative pressure chamber 11, and the top end of the negative pressure chamber 12 are reversibly provided with explosion-proof doors 15; to facilitate the maintenance and inspection of the filter chamber, the negative pressure chamber, the filter assembly, and the negative pressure assembly, and further improve the maintainability of the device. For example, the material of the explosion-proof door can be carbon steel or stainless steel, with a thickness of 8-15 mm, and the explosion-proof door is provided with a composite coating composed of a hot-dipped galvanized layer and a fire-retardant paint layer to further improve the explosion-proof and fire-retardant performance of the explosion-proof door.

[0046] Preferably, referring to Figure 2 and 3 , the explosion-proof dust removal device further comprises an inerting assembly 5 and an air inlet pipeline 6 connected with the air inlet 14.

[0047] The inerting assembly 5 is internally provided with an inerting cavity, and the inerting cavity is in communication with the air inlet pipeline 6.

[0048] The inerting cavity stores inerting powder.

[0049] In this embodiment, an inerting assembly is additionally arranged on the explosion-proof dust removal equipment, and inerting powder is arranged in the inerting cavity of the inerting assembly. Since the inerting cavity is communicated with the air inlet pipeline, the gas mixed with the combustible and explosive dust flowing in the air inlet pipeline will generate negative pressure, so that the inerting powder in the inerting cavity enters the air inlet pipeline due to the negative pressure and is uniformly mixed with the combustible and explosive dust. On the one hand, the inerting powder is mixed with the combustible and explosive dust to reduce the concentration of the combustible and explosive dust, and is coated on the surface of the combustible and explosive dust to isolate the combustible and explosive dust from oxygen, neutralize the sparks caused by static electricity, friction or external heat source, and inhibit the formation of dust explosion. On the other hand, the inerting powder is coated on the surface of the combustible and explosive dust to form larger particles, so that the combustible and explosive dust is more easily filtered by the filtering assembly, and the filtering and dust removal efficiency of the explosion-proof dust removal equipment is improved. Optionally, the inerting powder is talcum powder or sodium bicarbonate powder or other powder with fire-retardant, heat-absorbing and coating properties, which greatly reduces the explosion risk of the combustible and explosive dust.

[0050] Preferably, referring to Figure 1 , the filtering assembly 2 is provided with an anti-static and fire-retardant coating;

[0051] The negative pressure assembly 4 and the air duct 3 are provided with a protective cover.

[0052] In this embodiment, when the filtering assembly filters the combustible and explosive dust, the dust will flow at a high speed on the surface of the filtering assembly, and static electricity will be accumulated due to friction. The anti-static coating can quickly transfer static electricity and avoid the generation of static sparks, thereby reducing the risk of combustion and explosion of the combustible and explosive dust. In addition, the coating material contains fire-retardant components, which can significantly reduce the risk of fire on the surface of the filtering assembly. After the combustion or explosion of the combustible and explosive dust, the coating material can also prevent heat from being transmitted to the inside, thereby effectively inhibiting the spread of flames. For example, the anti-static and fire-retardant coating is a carbon nanotube coating or an epoxy resin coating doped with conductive carbon black. Protective covers are additionally arranged on the negative pressure assembly and the air duct to reduce the damage of the explosion of the combustible and explosive dust to the air duct and the negative pressure assembly, and to improve the explosion-proof performance of the equipment. More preferably, the negative pressure assembly comprises an explosion-proof fan and an explosion-proof motor connected with the explosion-proof fan. The explosion-proof motor adjusts the speed of the explosion-proof fan to adjust the size of the negative pressure generated by the negative pressure assembly, thereby adjusting the filtering speed of the filtering assembly and affecting the flow speed of the combustible and explosive dust at the air inlet, so as to reduce the explosion risk and the harm caused by the explosion, and improve the explosion-proof performance of the equipment.

[0053] Preferably, referring to Figure 2 , the explosion-proof dust removal equipment further comprises a relief assembly 7 connected with one side of the filtering chamber 12.

[0054] The relief assembly 7 comprises a relief channel and an explosion-proof plate detachably arranged in the relief channel.

[0055] In this embodiment, the explosion-proof plate can absorb the kinetic energy generated by the explosion of the combustible and explosive dust by plastic deformation, fracture expansion and other ways to reduce the intensity of the explosion wave and protect the core components of the equipment. At the same time, after the explosion-proof plate is broken, it can quickly release the pressure through the discharge channel, reduce the concentration of dust and the accumulation speed of pressure, and reduce the risk of re-explosion. Moreover, the explosion-proof plate itself is designed to be detachable, so that after the plastic deformation and fracture expansion of the explosion-proof plate, it can be quickly replaced to improve the maintenance efficiency of the equipment.

[0056] More preferably, the explosion-proof dust removal equipment further comprises a spark barrier 8 arranged between the air inlet and the filter assembly.

[0057] The spark barrier 8 is provided with a baffle 81 at the front end and dust diversion grooves 82 arranged at intervals on both sides.

[0058] In this embodiment, a spark barrier is added between the air inlet and the filter assembly. On the one hand, through the heat insulation and blocking effect of the baffle, the direct impact of the combustible and explosive dust flow on the filter assembly can be avoided. When there is a spark or spark in the combustible and explosive dust, the spark or spark can be blocked to avoid direct burning of the filter assembly by the spark or spark, thereby improving the service life of the filter assembly. On the other hand, the airflow with combustible and explosive dust flows out of the dust diversion grooves arranged at intervals on both sides, which uniformly disperses the airflow of the combustible and explosive dust, reduces the accumulation of dust on the filter assembly, and improves the filtering efficiency of the filter assembly. Optionally, the material of the baffle is aluminum clay refractory brick or asbestos heat insulation plate or high-temperature heat insulation material such as refractory ceramic.

[0059] More preferably, referring to Figure 1 , the air duct 3 is in a "U" shape;

[0060] The first end of the air duct 3 passes through the upper end of the filter chamber 11 and the upper end of the negative pressure chamber 12, and connects the filter assembly 2 and the negative pressure assembly 4.

[0061] The second end of the air duct 3 is provided with a secondary filter 9.

[0062] The secondary filter 9 is connected to the negative pressure assembly 4 at one end and connected to the air outlet 13 at the other end.

[0063] The negative pressure assembly 4 is arranged at the bottom of the air duct 3.

[0064] In this embodiment, the air duct adopts a "U" structure, and the "U" structure ensures smooth flow of the dust gas flow through natural curves and flow paths, so that the filtering effect of the filtering assembly is more stable; in addition, after being filtered by the filtering assembly, a small amount of residual dust is prevented from being accumulated at a dead angle of the air duct in a high concentration, thereby reducing the explosion risk of the combustible and explosive dust in the air duct due to accumulation; the second end of the air duct is provided with a secondary filter, which can prevent external dust or sundries from mixing into the air duct and entering the negative pressure assembly or the filtering assembly in the reverse direction, thereby preventing the negative pressure assembly or the filtering assembly from being contaminated; in addition, the combustible and explosive dust is filtered by the filtering assembly for the first time and then filtered by the secondary filter for the second time, so that two-stage filtering is performed on the combustible and explosive dust, thereby further improving the filtering effect and enabling the filtered gas to meet the indoor air emission standard. The negative pressure assembly is arranged at the bottom of the air duct, and when an explosion occurs in the filtering chamber, the shock wave of the explosion will pass through the buffer on one side of the air duct and then enter the negative pressure assembly, so that the damage of the explosion shock wave to the negative pressure assembly can be greatly reduced, thereby improving the service life of the equipment.

[0065] Preferably, referring to Figure 1 , the air duct 3 comprises: a first electrostatic compensation section 31 and a second electrostatic compensation section 32.

[0066] The first electrostatic compensation section 31 is arranged between the filtering assembly 2 and the negative pressure assembly 4.

[0067] The second electrostatic compensation section 32 is arranged between the negative pressure assembly 2 and the air outlet 13.

[0068] The first electrostatic compensation section 31 and the second electrostatic compensation section 32 are both made of a flexible flame-retardant anti-static material.

[0069] In this embodiment, the first electrostatic compensation section and the second electrostatic compensation section are introduced into the air duct, and the explosion in the filtering chamber will generate vibration and shock wave. The first electrostatic compensation section can reduce the impact of the explosion on the negative pressure assembly and the air duct, and can also flame-retardant the sparks generated by the explosion, thereby improving the service life of the equipment. Meanwhile, the operation of the negative pressure assembly will generate static electricity and vibration, and the first electrostatic compensation section and the second electrostatic compensation section can effectively block the static electricity and vibration generated by the negative pressure assembly, thereby preventing the filtering assembly and the air duct from being damaged or generating sparks due to vibration, and preventing the combustible and explosive dust from exploding.

[0070] More preferably, referring to Figure 1 , the negative pressure assembly 4 further comprises: an explosion-proof air speed instrument 41, an explosion-proof differential pressure transmitter 42 and a temperature sensor 43 arranged in the air duct in sequence, and an alarm connected with the explosion-proof air speed instrument 41, the explosion-proof differential pressure transmitter 42 and the temperature sensor 43.

[0071] In this embodiment, the operator first sets the safety range of wind speed, pressure change and temperature; then, the wind speed is detected by the explosion-proof anemometer, the air pressure value is detected by the explosion-proof differential pressure transmitter, and the temperature is detected by the temperature sensor; then, the alarm and the explosion-proof anemometer, the explosion-proof differential pressure transmitter and the temperature sensor work together, when the above parameters deviate from the set safety range, the alarm will immediately issue an audible and visual alarm to remind the operator to take corresponding measures in time, which can provide early warning before explosion and significantly reduce the probability of explosion. For example, when the temperature rises accompanied by an increase in pressure, it is quickly judged that the air duct is blocked and heat accumulation is caused, the operator can handle it in time according to the alarm information to avoid the combustible and explosive dust from burning due to overheating, resulting in explosion; when the pressure decreases and the wind speed decreases, it is quickly judged that the equipment leaks or the filter assembly is blocked, and the operator detects the air tightness of the equipment or cleans the filter assembly according to the alarm information, and through the linkage of the alarm, the fault cause is accurately located, and the fault handling efficiency is improved.

[0072] More preferably, referring to Figure 1 , the filter assembly 2 comprises a filter cartridge 21, an ash bucket 22 and a backflush cleaning piece 23 connected with the filter cartridge 21.

[0073] The ash bucket 22 is arranged below the filter chamber 11 and is detachably connected with the filter chamber 11 through a buckle lock.

[0074] In this embodiment, the backflush cleaning piece is connected with the filter cartridge, and the dust on the surface of the filter cartridge is cleaned by the reverse airflow, so that the dust particles adhering to the surface of the filter cartridge are blown off to the ash bucket, thereby keeping the surface of the filter cartridge clean, avoiding the blockage of the filter cartridge caused by dust accumulation, prolonging the service life of the filter cartridge, and reducing the frequency of replacing the filter cartridge. The ash bucket is detachably connected with the filter chamber through a buckle lock, which can quickly disassemble or assemble the ash bucket, reduces the time for cleaning and maintenance, and improves the maintenance efficiency of the equipment. More preferably, a rubber transfer wheel is arranged below the ash bucket to further improve the replacement and transfer efficiency of the ash bucket. The transfer wheel is made of rubber material to avoid static electricity or sparks caused by friction, thereby causing the combustion or explosion of combustible and explosive dust.

[0075] More preferably, referring to Figure 1 The backflush cleaning piece 23 comprises a cleaning gas source, a pulse electromagnetic valve and a cleaning air duct.

[0076] The pulse electromagnetic valve is connected with the cleaning gas source at the first end and connected with the filter cartridge through the cleaning air duct at the second end.

[0077] In the embodiment, the cleaning gas source is controlled by a pulse electromagnetic valve, which converts the compressed gas flow into a high-intensity short-time pulse gas flow, accurately acts on the surface of the filter cartridge, rapidly removes the dust particles attached to the surface of the filter cartridge, ensures that the filter cartridge maintains good permeability, reduces the filtration resistance, and further improves the cleaning effect and cleaning efficiency. In addition, due to the back flushing cleaning element, dust accumulation on the filter assembly can be removed in time, preventing overheating or even explosion caused by dust accumulation, greatly reducing the explosion hazard, and improving the explosion-proof performance of the equipment.

[0078] Preferably, the explosion-proof dust removal equipment further comprises an explosion-proof electric control cabinet 10 arranged on one side of the box body, used for accommodating the electric control devices of the filter assembly 2, the negative pressure assembly 4 and the inerting assembly 5.

[0079] In the embodiment, an explosion-proof electric control cabinet is additionally arranged on one side of the box body, used for accommodating the electric control devices of the filter assembly, the negative pressure assembly and the inerting assembly. The explosion-proof electric control cabinet is separated from the box body, which isolates the electric control devices from the dust environment and further reduces the dust explosion hazard caused by electric control failure.

[0080] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. An explosion-proof dust removal device, characterized in that, include: Housing, filter assembly, air duct, and negative pressure assembly; The housing includes: a filter chamber, a negative pressure chamber, an air outlet, and an air inlet connected to the filter chamber; Both the filtration chamber and the negative pressure chamber have reinforcing strips installed on their inner walls. The filter assembly is detachably installed in the filter chamber; the negative pressure assembly is installed in the negative pressure chamber; the filter assembly, negative pressure assembly, and air outlet are connected in sequence through air ducts.

2. The explosion-proof dust removal equipment according to claim 1, characterized in that, Also includes: Inertization components and air inlet duct connected to the air inlet; The inerting component has an inerting chamber inside, which is connected to the air inlet duct; The inerting chamber contains inerting powder.

3. The explosion-proof dust removal equipment according to claim 2, characterized in that: The filter assembly is equipped with an explosion-proof and flame-retardant coating. The negative pressure components and air ducts are equipped with protective covers.

4. The explosion-proof dust removal equipment according to claim 3, characterized in that, Also includes: A vent assembly connected to one side of the filter chamber; The venting assembly includes: a venting channel and a removable explosion-proof plate installed within the venting channel.

5. The explosion-proof dust removal equipment according to claim 4, characterized in that, Also includes: A spark barrier is installed between the air inlet and the filter assembly; The spark blocking component has a baffle at the front end and dust diversion channels arranged at intervals on both sides.

6. The explosion-proof dust removal equipment according to claim 4, characterized in that, The air duct has a "U" shaped structure; The first end of the air duct passes through the upper end of the filter chamber and the negative pressure chamber, and connects to the filter assembly and the negative pressure assembly. A secondary filter is installed at the second end of the air duct; The secondary filter is connected to the negative pressure component at one end and to the air outlet at the other end. The negative pressure component is located at the bottom of the air duct.

7. The explosion-proof dust removal equipment according to claim 6, characterized in that, The air duct includes: a first electrostatic compensation section and a second electrostatic compensation section. The first electrostatic compensation section is located between the filter assembly and the negative pressure assembly; The second electrostatic compensation section is located between the negative pressure component and the air outlet. Both the first and second electrostatic compensation sections are made of flexible, flame-retardant, and antistatic materials.

8. The explosion-proof dust removal equipment according to claim 7, characterized in that, The negative pressure assembly also includes: an explosion-proof anemometer, an explosion-proof differential pressure transmitter, and a temperature sensor, which are sequentially installed in the air duct, as well as an alarm connected to the explosion-proof anemometer, the explosion-proof differential pressure transmitter, and the temperature sensor.

9. The explosion-proof dust removal equipment according to claim 5, characterized in that, The filtration assembly includes: a filter cartridge, a dust hopper, and a backflushing cleaning component connected to the filter cartridge; The ash hopper is located below the filter chamber and is detachably connected to the filter chamber via a snap-lock.

10. The explosion-proof dust removal equipment according to claim 5, characterized in that, Backflush cleaning components include: a cleaning air source, a pulse solenoid valve, and a cleaning air duct; The first end of the pulse solenoid valve is connected to the clean air source, and the second end is connected to the filter cartridge through the clean air duct.

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