CN212794562U

CN212794562U - Grinding and polishing dust collector

Info

Publication number: CN212794562U
Application number: CN202021687341.8U
Authority: CN
Inventors: 王玉清
Original assignee: Beijing Zhuoli Tengfei Technology Co ltd
Current assignee: Beijing Zhuoli Tengfei Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-26
Anticipated expiration: 2030-08-13

Abstract

The utility model relates to a burnishing and polishing dust arrester, including the box, set up the dust removal unit in the box cavity, set up the air exhauster that is located the dust removal unit top in the box cavity, set up outside the box and with the dust absorption pipe of the cavity intercommunication that the box is located the dust removal unit below, set up in the dust absorption pipe deviate from box one end and with the cover that induced drafts of dust absorption pipe intercommunication and set up in the walking wheel that the box of being convenient for removed bottom half. This application has the flexibility that improves the dust arrester to improve the advantage of the convenience of section bar burnishing and polishing.

Description

Grinding and polishing dust collector

Technical Field

The application relates to the field of dust collecting equipment, in particular to a grinding and polishing dust collector.

Background

At present, the section bar is made of steel, iron or other materials with certain strength and toughness, such as plastics, glass fiber and the like, and is made into an object with a certain geometric shape through processes of rolling, extruding, casting and the like, and the section bar is one of the most commonly used materials in engineering construction; when the section is ground and polished, a large amount of dust is generated, the dust can affect the product quality and harm the respiratory system of workers, and the dust still has the risk of dust explosion after reaching a certain concentration; therefore, the generated dust needs to be treated when the section is ground and polished.

In the related art, a work table is installed in a factory, and then a dust collector is installed at a position corresponding to the work table; when the staff is polishing the section bar, need take the type groove to the operation on the workstation.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the dust collector is arranged at a fixed point at a position corresponding to the workbench, and when the section bar is ground and polished, the section bar needs to be conveyed to the workbench, and according to the actual production and processing conditions, the length or the volume of the section bar is sometimes larger, so that certain inconvenience exists in conveying the section bar, and at this time, the section bar may need to be ground and polished on the spot at the position where the section bar is placed; in addition, even if the section bar is conveyed to the workbench, the section bar is limited by the length or the volume of the section bar, and the section bar needs to be moved in real time in the grinding and polishing process so that the processing position is properly positioned in the coverage range of the working area of the dust collector; in addition, sometimes, according to actual conditions, such as driving, etc., a plurality of sectional materials may need to be simultaneously ground and polished, and the workbench becomes an important factor influencing the working progress; in summary, the dust collector is not flexible enough, and it is inconvenient to polish the section.

SUMMERY OF THE UTILITY MODEL

In order to improve the flexibility of dust arrester to improve the convenience of section bar burnishing and polishing, this application provides a burnishing and polishing dust arrester.

The application provides a burnishing and polishing dust collector adopts following technical scheme:

the utility model provides a burnishing and polishing dust arrester, includes the box, sets up the dust removal unit in the box cavity, sets up the air exhauster that is located the dust removal unit top in the box cavity, sets up outside the box and with the dust absorption pipe of the cavity intercommunication that the box is located the dust removal unit below, set up in the dust absorption pipe deviate from box one end and with the cover that induced drafts of dust absorption pipe intercommunication and set up in the walking wheel that the box of being convenient for removed in the bottom half.

By adopting the technical scheme, when the sectional material is inconvenient to carry to a workbench due to overlong length or large volume and needs to be polished at the actual placement position of the sectional material, the box body is pushed towards the placement position of the sectional material, the box body is pushed to a proper position, the dust suction pipe is pulled to enable the sectional material to be positioned in the working range of the air suction cover, then the exhaust fan is started, the suction fan forms negative pressure in the box body so as to suck air with dust into the box body, and the dust is adsorbed under the action of the dust removal unit, so that the air is purified; compared with the prior art, the position of the dust collector can be flexibly changed according to the position difference of the section bar, so that the convenience of grinding and polishing the section bar is improved.

Preferably, a mounting plate for separating the box body space is arranged in the box body; the dust removal unit is arranged on the mounting plate; the dust removal unit comprises a bag cage and a cloth bag; the bag cage comprises a plurality of fixing rings and a plurality of vertical ribs, wherein the axes of the fixing rings are overlapped and are distributed along the axis direction, and the vertical ribs are parallel to the axis direction of the fixing rings and are distributed along the circumference of the fixing rings; the fixing ring and the vertical ribs jointly form a tubular framework of the bag cage; the cloth bag is sleeved on the bag cage and is fixedly connected with the bag cage; a sealing cover used for sealing an opening on the end face of the dust removal unit is arranged at one end of the bag cage; the closed end of the dust removal unit is arranged in a space below the mounting plate in the box body; the open end of the dust removal unit is arranged in the space above the mounting plate in the box body.

By adopting the technical scheme, when the exhaust fan works, negative pressure is formed in the space above the mounting plate, air with dust sucked into the box body enters the exhaust fan through the pores on the surface of the cloth bag, and the pores on the cloth bag can filter and adsorb the dust in the air, so that the air purification effect is achieved; the bag cage can provide support for the cloth bag, so that the possibility that the cloth bag is sucked to be flat due to negative pressure is reduced, and the operation of the purification device is more reliable.

Preferably, a first mounting opening communicated with the cavity in the box body is formed in one surface of the box body, and a first sealing door used for sealing the first mounting opening is arranged on the first mounting opening; a plurality of mounting holes penetrating through the surface of the mounting plate are formed in the surface of the mounting plate vertical to the surface of the mounting plate; the opening end of the dust removal unit is provided with a mounting head; the mounting head comprises a mounting ring arranged at the opening end of the dust removal unit; the dust removal unit is inserted into the mounting hole and is in sliding fit with the mounting hole; the mounting ring is abutted against the mounting plate.

By adopting the technical scheme, the dust removal unit is detachably connected with the mounting plate, when the dust removal unit is damaged after being used for a period of time or the dust adhesion property is strong and a cloth bag or a bag cage needs to be replaced, the first sealing door is opened, then the mounting plate is pulled out from the mounting opening, and the dust removal unit needing to be replaced is pulled out from the mounting hole for maintenance and replacement; the maintenance and the replacement of the dust removal unit are more convenient.

Preferably, two symmetrical sliding grooves extending towards the installation inlet direction are formed in two opposite inner side walls of the box body; the both sides of mounting panel inlay locate in the spout and with spout sliding fit.

By adopting the technical scheme, the sliding chute can guide and support the sliding of the mounting plate, so that the sliding stability of the mounting plate is improved, and the dust removal unit is convenient to mount and dismount; in addition, the chute and the two sides of the mounting plate are matched to improve the sealing performance of the upper space and the lower space of the mounting plate and improve the dust removal effect.

Preferably, the outer side of the mounting hole is provided with a abdicating groove matched with the mounting ring; the mounting ring is embedded in the abdicating groove.

Through adopting above-mentioned technical scheme, the groove of stepping down can restrict the position of collar, improves the stability of dust removal unit installation in the mounting hole.

Preferably, a blowing assembly is arranged above the mounting plate; an air inlet pipe is arranged on the outer wall of the box body; the blowing assembly comprises a main pipe which is arranged in the box body and communicated with the air inlet pipe, a plurality of branch pipes which are positioned in the installation cavity and communicated with the main pipe, and a plurality of air injection pipes which are communicated with the branch pipes and correspond to the installation holes on the installation plate one by one; the air inlet pipe is provided with a pulse electromagnetic valve.

By adopting the technical scheme, after the dust collecting bag is used for a period of time, the dust on the cloth bag needs to be cleaned, and the air inlet pipe is communicated with an external compressed gas tank; under the control of the pulse electromagnetic valve, compressed gas is sprayed into the bag cage from the gas spraying pipe through the main gas pipe and the gas distribution pipe, when the gas moving at high speed enters the bag cage, the cloth bag expands, and dust is deposited from the cloth bag due to inertia in the process of contracting the cloth bag; in addition, the quickly contracted cloth bag collides with the bag cage to further shake off the accumulated dust.

Preferably, the dust suction pipe comprises a framework and a hose; the framework is spirally wound by a metal wire and is in a spring shape; the hose is sleeved outside the framework and is fixedly connected with the framework.

Through adopting above-mentioned technical scheme, can restrict the position of dust absorption pipe under the effect of metal framework in the dust absorption pipe to the position of inhaling the fan housing is fixed.

Preferably, a cleaning port is formed in the box body below the dust removal unit; a cleaning box which is matched with the cleaning opening in a sliding way is arranged in the cleaning opening; and a third sealing door used for sealing the cleaning opening is arranged on the cleaning opening.

By adopting the technical scheme, dust shaken off from the cloth bag falls into the cleaning box, after a period of time of collection, the third sealing opening is opened, and then the cleaning box is pulled out from the cleaning opening for cleaning; the cleaning of the dust in the box body is more convenient.

Preferably, the inner side wall of the box body is provided with a guide groove extending towards the cleaning opening, and sliding strips matched with the guide groove are convexly arranged at the positions, corresponding to the guide groove, on the two sides of the cleaning box; the sliding strip is embedded in the guide groove and is in sliding fit with the guide groove.

Through adopting above-mentioned technical scheme, guiding groove and draw runner are mutually supported and can be improved the stability that the clearance case slided to improve the convenience of laying dust clearance.

Preferably, the bottom of the box body is provided with supporting legs; the supporting legs comprise adjusting rods and bases; the bottom of the box body is provided with an adjusting hole; the adjusting hole is a threaded hole; the adjusting rod is a threaded rod and is in threaded connection with the adjusting hole; the base is in a round table shape, and the adjusting rod is coaxially and fixedly connected with the small end face of the base; an adjusting nut is fixedly connected to the position, close to the base, of the adjusting rod; one end of the adjusting rod close to the box body is screwed with a fastening nut which is tightly propped against the bottom surface of the box body.

By adopting the technical scheme, the fastening nut is firstly unscrewed by using tools such as a wrench and the like, then the adjusting nut is screwed, the adjusting nut drives the adjusting rod to rotate and screw out of the adjusting hole, and the base moves downwards along with the adjusting rod and abuts against the ground so as to support the box body; then tightening the fastening nut to improve the stability of the base; after the box body is used, the fastening nut is unscrewed, then the adjusting nut is screwed to move the adjusting rod and the base upwards, and after the adjusting rod and the base upwards move to a certain distance, the travelling wheels are abutted to the ground so as to move the box body; through setting up the supporting legs, the convenience carries out firm support to the box.

In summary, the present application includes at least one of the following beneficial technical effects:

1. compared with the prior art, the position of the dust collector can be flexibly changed according to the position of the section bar, so that the convenience of grinding and polishing the section bar is improved;

2. through setting up the supporting legs, the support that stabilizes is carried out to the box to the during operation to the convenience.

Drawings

FIG. 1 is a schematic view showing a structure of a dust collector for sanding and polishing;

FIG. 2 is a schematic view showing the structure of the interior of the dust collector for grinding and polishing;

FIG. 3 is a schematic view of the construction of the dust removing unit;

FIG. 4 is a schematic view of the dust removal unit engaged with the mounting plate;

FIG. 5 is a cross-sectional view of the support leg structure.

Description of reference numerals: 1. a box body; 10. a first mounting port; 100. a chute; 101. a first closure door; 11. mounting a plate; 110. mounting holes; 111. a yielding groove; 112. a card slot; 12. a second mounting opening; 120. a second closure door; 13. a fixing plate; 14. a mounting cavity; 15. an air inlet pipe; 16. a communicating pipe; 17. cleaning the opening; 170. a third sealing door; 171. a guide groove; 18. an adjustment hole; 2. a dust removal unit; 20. a bag cage; 200. a fixing ring; 201. erecting ribs; 21. a cloth bag; 22. a closure cap; 23. a mounting head; 230. a mounting ring; 2300. a clamping block; 231. a flow guide pipe; 3. an exhaust fan; 4. a dust collection pipe; 40. a framework; 41. a hose; 5. an air suction hood; 6. a traveling wheel; 7. a blowing assembly; 70. a main pipe; 71. pipe distribution; 72. a gas ejector tube; 8. cleaning the box; 80. a slide bar; 9. supporting legs; 90. adjusting a rod; 91. a base; 92. adjusting the nut; 93. fastening a nut; 94. shockproof rubber pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a polishing dust collector. Referring to fig. 1 and 2, the dust collector for polishing comprises a box body 1, a dust removal unit 2 arranged in a cavity of the box body 1, an air exhauster 3 arranged in the cavity of the box body 1 and above the dust removal unit 2, a dust suction pipe 4 arranged outside the box body 1 and communicated with the cavity of the box body 1 and below the dust removal unit 2, an air suction cover 5 arranged at one end of the dust suction pipe 4, which is communicated with the dust suction pipe 4, and a travelling wheel 6 arranged at the bottom of the box body 1 and convenient for the box body 1 to move.

Referring to fig. 2, a first installation opening 10 communicated with the cavity inside the box body 1 is formed in one surface of the box body 1, and a first sealing door 101 for sealing the first installation opening 10 is formed in the first installation opening 10; in this embodiment, one side of the first closing door 101 is hinged to one side of the first mounting opening 10, and the other side is fixed to the first mounting opening 10 through a lock; two symmetrical sliding grooves 100 extending towards the installation inlet direction are formed in two opposite inner side walls of the box body 1; an installation plate 11 is arranged in the box body 1, and two sides of the installation plate 11 are embedded in the sliding groove 100 and are in sliding fit with the sliding groove 100; a plurality of mounting holes 110 penetrating through the surface of the mounting plate 11 are formed in the vertical plate surface of the mounting plate 11; the dust removing unit 2 is disposed in the mounting hole 110.

Referring to fig. 3 and 4, the dust removing unit 2 includes a bag cage 20 and a cloth bag 21; the bag cage 20 comprises a plurality of fixing rings 200 with axes overlapped and arranged along the axis direction and a plurality of vertical ribs 201 which are parallel to the axis direction of the fixing rings 200 and arranged along the circumference of the fixing rings 200; in the present embodiment, the fixing ring 200 is integrally cast with the vertical ribs 201; the fixing ring 200 and the vertical ribs 201 jointly form the tubular framework 40 of the bag cage 20; the cloth bag 21 is sleeved on the bag cage 20 and is fixedly connected with the bag cage 20; particularly, the bag cage 20 can be fixed through a hoop; a sealing cover 22 for sealing the opening of the end face of the bag cage 20 is arranged at one end of the bag cage 20; the closure cap 22 and the bag cage 20 may be welded; a mounting head 23 is arranged at one end of the bag cage 20 facing away from the closing cover 22; the mounting head 23 comprises a mounting ring 230 fixedly connected with one end of the bag cage 20 away from the closing cover 22 and a flow guide pipe 231 which is convexly arranged on one surface of the mounting ring 230 facing the bag cage 20 and is positioned inside the bag cage 20; the end of the flow guide tube 231 facing away from the mounting ring 230 is in a necking shape; the dust removing units 2 are provided with a plurality of mounting holes 110, the dust removing units 2 are inserted into the mounting holes 110, and the mounting rings 230 are abutted to the upper surfaces of the mounting plates 11; in order to improve the sealing performance between the mounting ring 230 and the mounting hole 110, an annular abdicating groove 111 matched with the mounting ring 230 is formed on the outer side of the mounting hole 110; the mounting ring 230 is embedded in the abdicating groove 111; in order to limit the position of the mounting ring 230 and improve the stability of the mounting ring 230, a plurality of clamping grooves 112 communicated with the yielding groove 111 are formed on the outer side of the yielding groove 111; a plurality of clamping blocks 2300 matched with the clamping grooves 112 are convexly arranged on the outer side of the mounting ring 230, and when the mounting ring 230 is embedded in the abdicating groove 111, the clamping blocks 2300 are clamped in the clamping grooves 112.

Referring to fig. 2, a second mounting port 12 communicating with the inner cavity of the case 1 is provided on the case 1 above the first mounting port 10; a second closing door 120 for closing the second mounting opening 12 is provided at the second mounting opening 12; in this embodiment, one side of the second closing door 120 is hinged to the second mounting opening 12, and the other end is fixedly connected to the box body 1 through a lock; a fixed plate 13 is fixedly connected above the mounting plate 11 on the inner side wall of the box body 1; the exhaust fan 3 is fixedly connected to one surface of the fixed plate 13, which is far away from the mounting plate 11; a certain gap exists between the fixed plate 13 and the mounting plate 11 to form a mounting cavity 14; a blowing assembly 7 is arranged in the installation space 14.

Referring to fig. 2, an air inlet pipe 15 is arranged on the outer wall of the box body 1 corresponding to the installation cavity 14; the blowing assembly 7 comprises a main pipe 70 which is arranged in the mounting cavity 14 and is communicated with the air inlet pipe 15, a plurality of branch pipes 71 which are arranged in the mounting cavity 14 and are communicated with the main pipe 70, and a plurality of air injection pipes 72 which are communicated with the branch pipes 71 and are in one-to-one correspondence with the mounting holes 110 on the mounting plate 11; a pulse solenoid valve is provided in the intake pipe 15.

Referring to fig. 1, a communicating pipe 16 communicated with the cavity inside the box body 1 is arranged on the outer wall of the box body 1 below the dust removing unit 2; the dust suction pipe 4 is communicated with the communicating pipe 16, and a flange butt joint connection mode can be adopted; the air suction cover 5 is trumpet-shaped, and the small end of the air suction cover is communicated with one end of the dust suction pipe 4 departing from the communicating pipe 16 in a flange butt joint mode; in order to facilitate the adjustment of the position of the air suction cover 5, the dust suction pipe 4 comprises a framework 40 and a hose 41; the frame 40 is spirally wound by a metal wire and is in a spring shape; the hose 41 is sleeved outside the framework 40 and is fixedly connected with the framework 40.

Referring to fig. 2, a cleaning opening 17 is formed in the box body 1 below the first mounting opening 10; a cleaning box 8 which is matched with the cleaning port 17 in a sliding way is arranged in the cleaning port 17; a third sealing door 170 for sealing the cleaning opening 17 is provided on the cleaning opening 17; one side of the third sealing door 170 is hinged with the cleaning port 17, and the other side is fixed with the box body 1 through a lockset; in order to improve the convenience of pulling the cleaning box 8 out of the cleaning opening 17, two guide grooves 171 extending towards the cleaning opening 17 are formed in the inner side part of the box body 1 at positions corresponding to the cleaning opening 17, and sliding strips 80 matched with the guide grooves 171 are convexly arranged at positions corresponding to the guide grooves 171 on the two sides of the cleaning box 8; the slide 80 is inserted into the guide groove 171 and slidably engaged with the guide groove 171.

Referring to fig. 5, in order to effectively support the box body 1 after moving to a proper position, supporting feet 9 are arranged at four corners of the box bottom; the supporting foot 9 comprises an adjusting rod 90 and a base 91; four corners of the box bottom are provided with adjusting holes 18; the adjusting hole 18 is a threaded hole; the adjusting rod 90 is a threaded rod and is in threaded connection with the adjusting hole 18; the base 91 is in a circular truncated cone shape, and the adjusting rod 90 is coaxially and fixedly connected with the small end face of the base 91; in order to improve the convenience of adjusting the supporting foot 9, an adjusting nut 92 is fixedly connected to the position, close to the base 91, of the adjusting rod 90; after the adjustment is finished, in order to improve the stability of the adjusting rod 90, a fastening nut 93 tightly abutted against the bottom surface of the box body 1 is screwed at one end of the adjusting rod 90 close to the box body 1; to further improve the stability, a vibration-proof rubber pad 94 is bonded to the large end surface of the base 91.

The implementation principle of this application embodiment a burnishing and polishing dust arrester does: when the sectional material is inconvenient to carry on the workbench because the length or the volume of the sectional material is larger and needs to be polished at the actual placing position of the sectional material, the box body 1 is pushed towards the placing position of the sectional material, after the box body 1 is pushed to a proper position, a tool such as a wrench is used for loosening the fastening nut 93, then the adjusting nut 92 is screwed, the adjusting nut 92 drives the adjusting rod 90 to rotate and screw out of the adjusting hole 18, and the base 91 moves downwards along with the adjusting rod 90 and abuts against the ground so as to support the box body 1; then, the suction hood 5 is adjusted to a proper position by pulling the dust suction pipe 4, the position of the dust suction pipe 4 can be limited under the action of the metal framework 40 in the dust suction pipe 4, so that the position of the suction hood 5 is fixed, before polishing and polishing, the exhaust fan 3 is started, the exhaust fan 3 forms a negative pressure state above the dust removal unit 2, so that air with metal dust is sucked into the lower part of the dust removal unit 2 from the suction hood 5 through the dust suction pipe 4, because the bottom end of the bag cage 20 is in a closed state, the air can permeate through pores on the surface of the cloth bag 21, and the dust in the air is adsorbed on the outer surface of the cloth bag 21 through the filtration of the pores on the surface of the cloth bag 21, so that the air is filtered; when the dust-removing device is used for a period of time, the dust on the cloth bag 21 needs to be cleaned, and the air inlet pipe 15 is communicated with an external compressed gas tank; under the control of the pulse electromagnetic valve, compressed gas is sprayed into the bag cage 20 from the gas spraying pipe 72 through the main gas pipe and the gas distribution pipe, one end of the flow guide pipe 231, which is positioned in the bag cage 20, is in a necking shape, so that the flow rate of the gas sprayed out of the gas spraying pipe 72 is further improved, when the gas moving at high speed enters the bag cage 20, the cloth bag 21 is expanded, and dust is deposited from the cloth bag 21 due to inertia in the process of contracting the cloth bag 21; in addition, the rapidly contracted cloth bag 21 collides with the bag cage 20 to further shake off accumulated dust; the dust shaken off from the cloth bag 21 falls into the cleaning box 8, after a period of time of collection, the third sealing opening is opened, and then the cleaning box 8 is pulled out from the cleaning opening 17 for cleaning; when the dust removal unit 2 is damaged or the dust adhesion property is strong after the dust removal unit is used for a period of time and the cloth bag 21 or the bag cage 20 needs to be replaced, the first closing door 101 is opened, then the mounting plate 11 is pulled out from the mounting opening, and the dust removal unit 2 needing to be replaced is pulled out from the mounting hole 110 for maintenance and replacement; in conclusion, the flexibility of the dust collector is improved, and therefore the convenience of grinding and polishing the section is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sanding and polishing dust collector is characterized in that: including box (1), set up dust removal unit (2) in box (1) cavity, set up air exhauster (3) that are located dust removal unit (2) top in box (1) cavity, set up outside box (1) and with box (1) dust absorption pipe (4) that are located the cavity intercommunication of dust removal unit (2) below, set up in dust absorption pipe (4) deviate from box (1) one end and with cover (5) that induced drafts of dust absorption pipe (4) intercommunication and set up in box (1) bottom be convenient for walking wheel (6) that box (1) removed.

2. The sanding dust collector of claim 1, wherein: a mounting plate (11) for separating the box body (1) in space is arranged in the box body (1); the dust removal unit (2) is arranged on the mounting plate (11); the dust removal unit (2) comprises a bag cage (20) and a cloth bag (21); the bag cage (20) comprises a plurality of fixing rings (200) with axes overlapped and arranged along the axes direction and a plurality of vertical ribs (201) which are parallel to the axes direction of the fixing rings (200) and arranged along the circumference of the fixing rings (200); the fixing ring (200) and the vertical ribs (201) jointly form a tubular framework (40) of the bag cage (20); the cloth bag (21) is sleeved on the bag cage (20) and is fixedly connected with the bag cage (20); a closing cover (22) used for closing the opening of the end face of the dust removal unit (2) is arranged at one end of the bag cage (20); the closed end of the dust removal unit (2) is arranged in a space below the mounting plate (11) in the box body (1); the opening end of the dust removal unit (2) is arranged in the box body (1) and is positioned in the space above the mounting plate (11).

3. The sanding dust collector of claim 2, wherein: a first mounting opening (10) communicated with the cavity in the box body (1) is formed in one surface of the box body (1), and a first sealing door (101) used for sealing the first mounting opening (10) is arranged on the first mounting opening (10); a plurality of mounting holes (110) penetrating through the plate surface of the mounting plate (11) are formed in the plate surface of the mounting plate (11) in a vertical manner; an installing head (23) is arranged at the opening end of the dust removing unit (2); the mounting head (23) comprises a mounting ring (230) arranged at the opening end of the dust removing unit (2); the dust removal unit (2) is inserted into the mounting hole (110) and is in sliding fit with the mounting hole (110); the mounting ring (230) abuts against the mounting plate (11).

4. A sanding dust collector as defined in claim 3, wherein: two symmetrical sliding grooves (100) extending towards the direction of the installation inlet are formed in two opposite inner side walls of the box body (1); the two sides of the mounting plate (11) are embedded in the sliding groove (100) and are in sliding fit with the sliding groove (100).

5. A sanding dust collector as defined in claim 3, wherein: an abdicating groove (111) matched with the mounting ring (230) is formed in the outer side of the mounting hole (110); the mounting ring (230) is embedded in the abdicating groove (111).

6. The sanding dust collector of claim 2, wherein: a blowing assembly (7) is arranged above the mounting plate (11); an air inlet pipe (15) is arranged on the outer wall of the box body (1); the blowing assembly (7) comprises a main pipe (70) which is arranged in the box body (1) and communicated with the air inlet pipe (15), a plurality of branch pipes (71) which are positioned in the installation cavity (14) and communicated with the main pipe (70), and a plurality of air injection pipes (72) which are communicated with the branch pipes (71) and correspond to the installation holes (110) on the installation plate (11) one by one; the air inlet pipe (15) is provided with a pulse electromagnetic valve.

7. The sanding dust collector of claim 1, wherein: the dust suction pipe (4) comprises a framework (40) and a hose (41); the framework (40) is spirally wound by metal wires and is in a spring shape; the hose (41) is sleeved outside the framework (40) and is fixedly connected with the framework (40).

8. The sanding dust collector of claim 1, wherein: a cleaning opening (17) is formed in the box body (1) and is positioned below the dust removal unit (2); a cleaning box (8) which is matched with the cleaning opening (17) in a sliding way is arranged in the cleaning opening (17); a third sealing door (170) for sealing the cleaning opening (17) is arranged on the cleaning opening (17).

9. The sanding dust collector of claim 8, wherein: a guide groove (171) extending towards the cleaning opening (17) is formed in the inner side wall of the box body (1), and sliding strips (80) matched with the guide groove (171) are convexly arranged at the positions, corresponding to the guide groove (171), on the two sides of the cleaning box (8); the sliding strip (80) is embedded in the guide groove (171) and is in sliding fit with the guide groove (171).

10. The sanding dust collector of claim 1, wherein: the bottom of the box body (1) is provided with a supporting leg (9); the supporting foot (9) comprises an adjusting rod (90) and a base (91); the bottom of the box body (1) is provided with an adjusting hole (18); the adjusting hole (18) is a threaded hole; the adjusting rod (90) is a threaded rod and is in threaded connection with the adjusting hole (18); the base (91) is in a circular truncated cone shape, and the adjusting rod (90) is coaxially and fixedly connected with the small end face of the base (91); an adjusting nut (92) is fixedly connected to the adjusting rod (90) at a position close to the base (91); one end of the adjusting rod (90) close to the box body (1) is screwed with a fastening nut (93) which is tightly propped against the bottom surface of the box body (1).