CN217410162U

CN217410162U - Dustproof frame convenient to change filter equipment

Info

Publication number: CN217410162U
Application number: CN202220945194.2U
Authority: CN
Inventors: 戴必良
Original assignee: Jiangsu Senlong Environmental Protection Technology Co ltd
Current assignee: Jiangsu Senlong Environmental Protection Technology Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-09-13
Anticipated expiration: 2032-04-22

Abstract

The utility model belongs to the technical field of the dust remover technique and specifically relates to a dustproof frame convenient to change filter equipment, include: the dustproof box body, dustproof box body upside is provided with the net gas export, net gas export below is provided with the filtration storehouse, it is provided with the ash bucket to filter the storehouse below, dustproof box body one side is provided with the dirt gas entry, be provided with filter equipment in the filtration storehouse, filter equipment includes the perforated plate, the perforated plate both sides are connected with the removal subassembly, the downthehole filter bag frame that is provided with of perforated plate, be provided with the filter bag on the filter bag frame. When filter equipment needs to be replaced, the box upper cover is opened through the movable assembly, the movable assembly is started, the movable assembly integrally ascends the filter equipment, the filter bag in the porous plate needs to be replaced through manual work, the filter bag is detached and replaced, the movable assembly is restarted, and the filter equipment is replaced easily and simply.

Description

Dustproof frame convenient to change filter equipment

Technical Field

The utility model belongs to the technical field of the dust remover technique and specifically relates to a dustproof frame convenient to change filter equipment.

Background

A bag filter is a dry dust filter. It is suitable for trapping fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, the dust-containing gas is filtered by the filtering action of the fiber fabric, after the dust-containing gas enters the bag type dust collector, dust with large particles and large specific gravity falls into the dust hopper due to the sedimentation of the gravity, and when the gas containing fine dust passes through the filter material, the dust is blocked, so that the gas is purified. In the bag filter, the filter bag is an indispensable important component of the bag filter.

The filter bag frame body is taken out from the through hole of the porous plate, then the filter bag is taken out from the through hole, and after the filter bag is replaced, the filter bag frame body is put into the through hole and fixed with the porous plate.

Disclosure of Invention

The utility model aims at: overcome not enough among the prior art, provide a dustproof frame convenient to change filter equipment, it changes filter equipment convenience and dismantles the swift safety of installation simultaneously, is difficult to damage the filter bag framework.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: the method comprises the following steps: the dustproof box body, dustproof box body upside is provided with the net gas export, net gas export below is provided with the filtration storehouse, it is provided with the ash bucket to filter the storehouse below, dustproof box body one side is provided with dirt gas entry, be provided with filter equipment in the filtration storehouse, filter equipment includes the perforated plate, the perforated plate both sides are connected with the removal subassembly, be provided with the filter bag frame in the perforated plate, be provided with the filter bag on the filter bag frame. The gas gets into in the dust prevention box from dirt gas inlet, then through filtering the storehouse, the filter bag adsorbs the coarse dust particle that contains in with gas, and the gas after the filtration is discharged from the inlet outlet, the perforated plate both sides are provided with the removal subassembly, and when needs change filter equipment through setting up the removal subassembly, open the box upper cover, start the removal subassembly, the removal subassembly rises filter equipment is whole, changes the filter bag through the manual work again and dismantles the change with needs in the perforated plate, restarts the removal subassembly and resets, and it is light simple to change filter equipment.

Further, the moving assembly comprises a sliding block, the sliding block is connected with the left side of the porous plate, the sliding block is connected with a sliding rod in a sliding mode, the right side of the porous plate is connected with a moving block, the moving block is connected with a threaded rod, the bottom of the threaded rod is connected with a first gear, the first gear is meshed with a second gear, the second gear is connected with a connecting shaft, the connecting shaft penetrates through the side wall of the dustproof box body and is connected with a first motor, and a bearing plate is arranged at the bottom of the first motor. When starting first motor, first motor rotates and drives the connecting axle and rotate, the connecting axle rotates and drives the second gear along with rotating, the first gear that the second gear drive meshing is connected rotates, and first gear drives the threaded rod and rotates, and the threaded rod drives the removal block and removes, and the removal block removes and drives the perforated plate and remove, and the perforated plate removes and drives left slider along with removing.

Preferably, the filter bag frame comprises a fixing ring and an inner support frame, a clamping groove is formed in one side, facing the inner support frame, of the fixing ring, a filter bag is arranged in the clamping groove, and the filter bag is connected with the clamping groove through a pressing assembly. Through setting up the joint groove, can install and spacing the filter bag, put into the joint groove with the filter bag after, the filter bag left and right sides direction is fixed, and the rethread compresses tightly the subassembly and compresses tightly the filter bag, and the upper and lower direction of further fixed filter bag prevents that the filter bag from droing.

Further, the filter bag includes the bag ring, the bag ring is the metal, bag ring and joint groove coincidence setting, the bag ring is connected with the bag body. The bag ring can be better attached and fixed with the clamping groove, the bag ring is firstly placed into the clamping groove, and then the pressing assembly is controlled to enable the bag ring to be in interference fit with the clamping groove.

Preferably, the compressing assembly comprises a compressing ring, the compressing ring is clamped in the clamping groove and is overlapped with the bag ring, an extrusion spring is arranged in the compressing ring, the bottom of the compressing ring is connected with a fixed base, and a fixing assembly is arranged on the fixed base. Firstly, put into the joint inslot with the bag ring, then embolia the filter bag with the clamp ring, embedding joint groove and with bag ring coincidence, then tightly laminate the bag ring with the clamp ring through fixed subassembly and fix, the clamp ring is inside to be provided with extrusion spring and is used for hugging closely the bag ring, is applicable to the bag ring of different thickness degrees.

Furthermore, the fixed component comprises a fixed hole arranged on the fixed base, a connecting hole is formed in the position, corresponding to the fixed hole, of the fixed ring, a connecting rod is arranged in the fixed hole, one end of the connecting rod penetrates through the fixed hole and extends into the connecting hole, the connecting rod is close to one end of the connecting hole and is connected with a clamping plate, one side, away from the connecting rod, of the clamping plate is provided with a first elastic piece, one end, away from the connecting hole, of the connecting rod is connected with a connecting seat, and a clamping groove is formed in the connecting rod. The fixing component is fixedly connected with the fixing ring, the fixing hole in the fixing base is aligned to the connecting hole in the fixing ring, the connecting rod is inserted, the connecting rod stretches into the connecting hole, and the fixing component is fixed with the fixing ring in all directions.

Preferably, a cavity is arranged in the connecting hole, a first groove is formed in one side, close to the edge of the fixing ring, of the cavity, a trapezoid clamping block is arranged in the first groove, one end, far away from the connecting rod, of the trapezoid clamping block is connected with a second elastic piece, a second groove is formed in the trapezoid clamping block, a control column is arranged in the second groove, the control column is connected with a pull rod, the pull rod is connected with a pull handle, and the pull handle is arranged at the edge of the fixing ring. Through set up trapezoidal joint piece in the cavity, be provided with the pull rod on the trapezoidal joint piece, when needs are fixed, the pulling is drawn the orientation of keeping away from solid fixed ring edge and is removed, and trapezoidal joint piece extrusion second elastic component gets into inside the second recess, promotes the connecting rod and stretches into in the connecting hole, loosens and draws the handle, and under the elastic potential energy of second elastic component, trapezoidal joint piece gets into the draw-in groove of connecting rod, accomplishes fixedly. When needs are dismantled, the pulling is drawn the handle and is removed towards the direction of keeping away from solid fixed ring edge, and under the reset action of first elastic component, the connecting rod is extruded the connecting hole and is accomplished the dismantlement.

Further, be provided with the ash discharging device in the ash bucket, the ash discharging device includes the bin stock box, bin stock box one side is provided with the second motor, the second motor meshing is connected with the impeller shaft, the impeller shaft the pivot is passed the bin stock box and is connected with the impeller, one side that the bin stock box is close to ground is provided with the bin outlet. Through setting up dust discharging device, the flue gas that contains a large amount of dusts in the dirt gas entry gets into the filter bin and filters the back, the great part of quality directly falls into the ash bucket, and the dust absorption of quality is on the filter bag, can set up the air jet pipe through the position top that corresponds the filter bag in the dust removal box and aim at dust removal filter bag jetting dust, make tiny dust fall into in the ash bucket, after the dust of certain degree has been saved to the accumulation in the ash bucket, start the second motor, the second motor rotates the impeller and rotates, thereby the bin outlet is discharged to the dust in the ash bucket.

Further, the ash bucket is movably connected with a cleaning door through a hinge, and a sealing ring is arranged between the cleaning door and the dustproof box body. Through setting up the clearance door, when row's ash discharge device row material failure, can arrange the material through the clearance door, the clearance door also can use as the access door simultaneously, gets into inside inspection and repairs.

Preferably, the purified gas outlet is provided with an activated carbon cavity, and activated carbon is filled in the activated carbon cavity. The gas reaches the clean gas outlet after passing through the filter bin, and when passing through the activated carbon cavity, the gas is further filtered by the activated carbon in the activated carbon cavity, so that toxic substances possibly existing in the gas are further filtered, and the discharged gas is safer.

Adopt the technical scheme of the utility model's beneficial effect is: remove the subassembly through setting up and rise filter equipment is whole, dismantle the change of getting off through the artifical filter bag that needs to be changed in with the perforated plate again, restart removes the subassembly and resets, changes filter equipment and easily simply.

Through setting up solid fixed ring, bag ring, compressing tightly the subassembly cooperation, put into the joint inslot with the bag ring earlier, then embolia the filter bag with the clamp ring, imbed the joint groove and coincide with the bag ring, then tightly laminate the bag ring with the clamp ring fixedly through fixed subassembly, compress tightly effectual change the filter bag simultaneously and only need stimulate the pull rod, take off the clamp ring, avoided the condition of frequent installation and the damage filter bag framework that the uninstallation probably appears.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a schematic view of the overall structure of a dustproof box body of a dustproof frame for facilitating replacement of a filtering device according to the present invention;

fig. 2 is a front structure view of a dustproof box body of a dustproof frame for facilitating replacement of a filtering device according to the present invention;

fig. 3 is a diagram of the internal structure of the filtration chamber of the dustproof frame for facilitating the replacement of the filtration device according to the present invention;

FIG. 4 is a filter bag frame structure diagram of a dustproof frame for facilitating replacement of a filter device according to the present invention;

fig. 5 is a schematic structural view of a fixing ring for facilitating replacement of a dustproof frame of a filtering apparatus according to the present invention;

FIG. 6 is a diagram illustrating a filter bag structure of a dustproof frame for facilitating replacement of a filter device according to the present invention;

fig. 7 is an overall and internal structure view of a clamp ring for facilitating replacement of a dust-proof frame of a filter device according to the present invention;

FIG. 8 is a diagram illustrating the installation structure of a filter bag of a dustproof frame for facilitating replacement of a filter device according to the present invention;

fig. 9 is a partially enlarged view of the area a of fig. 8 of a dustproof frame for facilitating replacement of a filter device according to the present invention;

fig. 10 is a partial enlarged view of the area B of fig. 9 for facilitating replacement of the dust-proof frame of the filter device according to the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention. The utility model discloses utilize structural schematic diagram etc. to carry out the detailed description, the schematic diagram is the example only, and it should not restrict here the scope of the utility model protection. In addition, the actual manufacturing process should include three-dimensional space of length, width and depth.

Referring to fig. 1-10, the utility model discloses a dustproof frame convenient to change filter equipment, include: including, dustproof box 100 upside is provided with net gas export 200, net gas export 200 below is provided with filter house 300, filter house 300 below is provided with ash bucket 400, dustproof box 100 one side is provided with dirt gas entry 500, be provided with filter equipment in the filter house 300, filter equipment includes perforated plate 301, perforated plate 301 both sides are connected with removal subassembly 600, be provided with filter bag frame 302 in the perforated plate 301, be provided with filter bag 303 on the filter bag frame 302. In gaseous dust gas inlet 50 got into dustproof box 100, then through filter house 300, the coarse dust particle that filter bag 303 contained in with gas adsorbs down, and the gaseous gas after the filtration is discharged from net gas outlet 200, perforated plate 301 both sides are provided with removal subassembly 600, and when needs change filter equipment through setting up removal subassembly 600, open dustproof box 100's upper cover, start removal subassembly 600, removal subassembly 600 rises filter equipment is whole, and the needs change filter bag 303 in the perforated plate 301 of rethread manual work are dismantled and are changed, and restart removal subassembly 600 resets, and it is light simple to change filter equipment.

Further, the moving assembly 600 comprises a sliding block 601, the sliding block 601 is connected with the left side of the porous plate 301, the sliding block 601 is connected with a sliding rod 602 in a sliding manner, the right side of the porous plate 301 is connected with a moving block 603, the moving block 603 is connected with a threaded rod 604, the bottom of the threaded rod 604 is connected with a first gear 605, the first gear 605 is connected with a second gear 606 in a meshing manner, the second gear 606 is connected with a connecting shaft 607, the connecting shaft 607 penetrates through the side wall of the dustproof box 100 and is connected with a first motor 608, and the bottom of the first motor 608 is provided with a bearing plate. When the first motor 608 is started, the first motor 608 rotates to drive the connecting shaft 607 to rotate, the connecting shaft 607 rotates to drive the second gear 606 to rotate, the second gear 606 drives the first gear 605 which is meshed and connected to rotate, the first gear 605 drives the threaded rod 604 to rotate, the threaded rod 604 drives the moving block 603 to move, the moving block 603 moves to drive the porous plate 301 to move, and the porous plate 301 moves to drive the slider 601 on the left side to move along with the movement.

Preferably, the filter bag frame 302 comprises a fixing ring 302a and an inner supporting frame 302b, a clamping groove 302c is formed in one side, facing the inner supporting frame 302b, of the fixing ring 302a, a filter bag 303 is arranged in the clamping groove 302c, and the filter bag 303 is connected with the clamping groove 302c through a pressing assembly 700. Through setting up joint groove 302c, can install and spacing filter bag 303, put into joint groove 302c with filter bag 303 after, the filter bag 303 left and right sides direction is fixed, compresses tightly filter bag 303 through compressing tightly subassembly 700 again, further fixes the upper and lower direction of filter bag 303, prevents that filter bag 303 from droing.

Further, the filter bag 303 includes a bag ring 303a, the bag ring 303a is metal, the bag ring 303a and the clamping groove 302c are overlapped, and the bottom of the bag ring 303a is connected with a bag body 303 b. The bag ring 303a can be better attached and fixed to the clamping groove 302c, the bag ring 303a is firstly placed into the clamping groove 302c, and then the pressing component 700 is controlled to enable the bag ring 303a to be in interference fit with the clamping groove 302 c.

Preferably, the pressing assembly 700 includes a pressing ring 701, the pressing ring 701 is clamped in the clamping groove 302c and is overlapped with the bag ring 303a, an extrusion spring 702 is disposed in the pressing ring 701, a fixing base 703 is connected to the bottom of the pressing ring 701, and a fixing assembly 800 is disposed on the fixing base 703. Firstly, the bag ring 303a is placed in the clamping groove 302c, then the compression ring 701 is sleeved into the filter bag 303, is embedded into the clamping groove 302c and is overlapped with the bag ring 303a, then the compression ring 701 is tightly attached to and fixed with the bag ring 303a through the fixing component 800, and the compression spring 702 is arranged in the compression ring 701 and is used for being tightly attached to the bag ring 303a, so that the bag ring 303a clamping device is suitable for bag rings 303a with different thicknesses.

Further, the fixing assembly 800 includes a fixing hole formed in the fixing base 703, a connecting hole 802 is formed in a position, corresponding to the fixing hole, of the fixing ring 302a, a connecting rod 803 is arranged in the fixing hole 801, one end of the connecting rod 803 penetrates through the fixing hole 801 and extends into the connecting hole 802, one end, close to the connecting hole 802, of the connecting rod 803 is connected with a clamping plate 804, one side, away from the connecting rod 803, of the clamping plate 804 is provided with a first elastic piece 814, one end, away from the connecting hole 802, of the connecting rod 803 is connected with a connecting seat 805, and a clamping groove 806 is formed in the connecting rod 803. The pressing assembly 700 is fixedly connected with the fixing ring 302a through the fixing assembly 800, the fixing holes in the fixing base 703 are aligned with the connecting holes 802 of the fixing ring 302a, the connecting rod 803 is inserted, the connecting rod 803 extends into the connecting holes 802, and at the moment, the pressing assembly 700 and the fixing ring 302a are fixed in the front, back, left and right directions.

Preferably, a cavity is arranged in the connecting hole 802, a first groove 807 is arranged at one side of the cavity close to the edge of the fixing ring 302a, a trapezoidal clamping block 808 is arranged in the first groove 807, one end, far away from the connecting rod 803, of the trapezoidal clamping block 808 is connected with a second elastic piece 809, a second groove 810 is arranged in the trapezoidal clamping block 808, a control column 811 is arranged in the second groove 810, the control column 811 is connected with a pull rod 812, the pull rod 812 is connected with a pull handle 813, and the pull handle 813 is arranged at the edge of the fixing ring 302 a. Through set up trapezoidal joint piece 808 in the cavity, be provided with pull rod 812 on trapezoidal joint piece 808, when needs are fixed, the pulling is drawn the handle 813 and is removed towards the direction of keeping away from solid fixed ring 302a edge, and trapezoidal joint piece 808 extrudees second elastic component 809, gets into inside the second recess 810, pushes away connecting rod 803 and stretches into in the connecting hole 802, loosens and draws the handle 813, and under the elastic potential energy of second elastic component 809, trapezoidal joint piece 808 gets into the draw-in groove of connecting rod 803, accomplishes fixedly. When disassembly is required, the pull handle 813 is pulled to move away from the edge of the fixing ring 302a, and the connecting rod 803 is pushed out of the connecting hole 802 under the reset action of the first elastic piece 814, so that disassembly is completed.

Further, be provided with the ash discharging device in the ash bucket 400, the ash discharging device includes row workbin 401, row workbin 401 one side is provided with second motor 402, second motor 402 meshing is connected with the impeller shaft, the impeller shaft passes row workbin 401 and is connected with the impeller, one side that row workbin 401 is close to ground is provided with the bin outlet. By arranging the dust discharging device, after smoke containing a large amount of dust in the dust inlet enters the filter bin 300 to be filtered, the part with larger mass directly falls into the dust hopper 400, and the dust with small mass is adsorbed on the filter bag 303, the air injection pipe is arranged above the position, corresponding to the filter bag 303, in the dust removal box body 100 to be aligned with the filter bag 303 to inject the dust, so that the fine dust falls into the dust hopper 400, after a certain degree of dust is accumulated in the dust hopper 400, the second motor 402 is started, the second motor 402 rotates the impeller to rotate, and the dust in the dust hopper 400 is discharged into the discharge port;

preferably, the dust hopper 400 is movably connected with a cleaning door 405 through a hinge, and a sealing ring is arranged between the cleaning door 405 and the dustproof box 100. Through setting up cleaning door 405, when row grey device row material fails, can arrange the material through cleaning door 405, cleaning door 405 also can regard as the access door to use simultaneously, gets into internal inspection and repairs.

Further, the purified gas outlet 200 is provided with an activated carbon cavity, and activated carbon is filled in the activated carbon cavity. The gas reaches the clean gas outlet 200 after passing through the filter bin 300, and when passing through the activated carbon cavity, the gas is further filtered by the activated carbon in the activated carbon cavity, so that toxic substances possibly existing in the gas are further filtered, and the discharged gas is safer.

The implementation mode is as follows: the gas enters the dustproof box body 100 from the dust gas inlet 500, then passes through the filter bin 300, coarse dust particles contained in the gas are adsorbed by the filter bag 303, the filtered gas is discharged from the clean gas outlet 200, the moving assemblies 600 are arranged on two sides of the porous plate 301, when the filter device needs to be replaced, the upper cover of the dustproof box body is opened, when the first motor 608 is started, the first motor 608 rotates to drive the connecting shaft 607 to rotate, the connecting shaft 607 rotates to drive the second gear 606 to rotate along with the rotation, the second gear 606 drives the first gear 605 in meshed connection to rotate, the first gear 605 drives the threaded rod 604 to rotate, the threaded rod 604 drives the moving block 603 to move, the moving block 603 moves to drive the porous plate 301 to move, the porous plate 301 moves to drive the left sliding block 601 to move along with the left sliding block and move to the cover body of the dustproof box body 100, and the filter bag 303 outside the filter bag frame 302 is directly replaced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a dustproof frame convenient to change filter equipment which characterized in that: including, dustproof box (100) upside is provided with net gas export (200), net gas export (200) below is provided with filter bin (300), filter bin (300) below is provided with ash bucket (400), dustproof box (100) one side is provided with dirt gas entry (500), be provided with filter equipment in filter bin (300), filter equipment includes perforated plate (301), perforated plate (301) both sides are connected with removal subassembly (600), be provided with filter bag frame (302) in perforated plate (301), be provided with filter bag (303) on filter bag frame (302).

2. A dust-proof frame for facilitating replacement of a filter unit according to claim 1, wherein: the movable assembly (600) comprises a sliding block (601), the sliding block (601) is connected with the left side of the porous plate (301), the sliding block (601) is connected with a sliding rod (602) in a sliding mode, the right side of the porous plate (301) is connected with a movable block (603), the movable block (603) is connected with a threaded rod (604), the bottom of the threaded rod (604) is connected with a first gear (605), the first gear (605) is connected with a second gear (606) in a meshing mode, the second gear (606) is connected with a connecting shaft (607), the connecting shaft (607) penetrates through the side wall of the dustproof box body (100) and is connected with a first motor (608), and a bearing plate is arranged at the bottom of the first motor (608).

3. A dust-proof frame for facilitating replacement of a filter unit according to claim 1 or 2, wherein: the filter bag frame (302) includes solid fixed ring (302 a) and internal stay frame (302 b), joint groove (302 c) have been seted up towards one side of internal stay frame (302 b) in solid fixed ring (302 a), be provided with filter bag (303) in joint groove (302 c), be connected through compressing tightly subassembly (700) between filter bag (303) and joint groove (302 c).

4. A dust-proof frame for facilitating replacement of a filter unit according to claim 3, wherein: the filter bag (303) includes bag ring (303 a), bag ring (303 a) is the metal, bag ring (303 a) and joint groove (302 c) coincidence setting, bag ring (303 a) bottom is connected with bag body (303 b).

5. The dust-proof frame for facilitating replacement of a filter device according to claim 4, wherein: the pressing assembly (700) comprises a pressing ring (701), the pressing ring (701) is clamped in the clamping groove (302 c) and is overlapped with the bag ring (303 a), an extrusion spring (702) is arranged in the pressing ring (701), the bottom of the pressing ring (701) is connected with a fixed base (703), and a fixing assembly (800) is arranged on the fixed base (703).

6. The dust-proof frame for facilitating replacement of a filter device according to claim 5, wherein: fixed subassembly (800) is including offering the fixed orifices on unable adjustment base (703), connecting hole (802) have been seted up to the position that solid fixed ring (302 a) corresponds the fixed orifices, be provided with connecting rod (803) in fixed orifices (801), connecting rod (803) one end is passed fixed orifices (801) and is extended to in connecting hole (802), connecting rod (803) are close to the one end of connecting hole (802) is connected with joint board (804), one side that connecting rod (803) were kept away from in joint board (804) is provided with first elastic component (814), connecting rod (803) are kept away from the one end of connecting hole (802) is connected with connecting seat (805), be provided with draw-in groove (806) on connecting rod (803).

7. A dust-proof frame for facilitating replacement of a filter unit according to claim 6, wherein: be provided with the cavity in connecting hole (802), one side that the cavity is close to solid fixed ring (302 a) edge is provided with first recess (807), be provided with trapezoidal joint piece (808) in first recess (807), the one end that connecting rod (803) were kept away from in trapezoidal joint piece (808) is connected with second elastic component (809), be provided with second recess (810) in trapezoidal joint piece (808), be provided with control column (811) in second recess (810), control column (811) are connected with pull rod (812), pull rod (812) are connected with and draw handle (813), draw handle (813) setting in solid fixed ring (302 a) edge.

8. A dust-proof frame for facilitating replacement of a filter unit according to claim 1, wherein: be provided with the ash discharging device in ash bucket (400), the ash discharging device includes hopper (401), hopper (401) one side is provided with second motor (402), second motor (402) meshing is connected with the impeller shaft, the impeller shaft passes hopper (401) and is connected with the impeller, one side that hopper (401) is close to ground is provided with the bin outlet.

9. The dust-tight frame of claim 8, wherein: the ash bucket (400) is movably connected with a cleaning door (405) through a hinge, and a sealing ring is arranged between the cleaning door (405) and the dustproof box body (100).

10. The dustproof frame convenient for replacing a filtering device according to any one of claims 1 to 2 and 4 to 9, wherein: the purified gas outlet (200) is provided with an activated carbon cavity, and activated carbon is filled in the activated carbon cavity.