Portable energy-saving and environment-friendly sand blasting machine

Abstract

The application provides a portable energy-saving and environment-friendly sand blasting machine, and relates to the technical field of sand blasting machines.The sand blasting machine comprises a sand-dust separation bin, a gas-dust separation bin and a dust filter.The sand-dust separation bin is provided with a sand-dust gas inlet, and is used for separating sand in sand-dust gas.The gas-dust separation bin is arranged in the sand-dust separation bin, and is provided with a dust gas inlet.The dust gas inlet is used for allowing dust gas in the sand-dust separation bin to enter the gas-dust separation bin.The dust filter is arranged in the gas-dust separation bin, and is used for filtering dust in the dust gas entering the gas-dust separation bin.The sand-dust separation bin is provided with an exhaust port.The sand-dust gas enters the sand-dust separation bin to separate reusable sand, and the remaining dust gas enters the gas-dust separation bin under the action of negative pressure suction to separate dust, so that the sand-dust separation structure and the dust removal structure are integrated together, thereby reducing the occupied space and improving the use portability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand blasting machines, in particular to a portable energy-saving and environment-friendly sand blasting machine. BACKGROUND

[0002] A sand blasting machine is a common surface treatment device, mainly used for paint removal in the maintenance of automobiles, armored vehicles, tanks and other equipment, for cleaning and removing surface dirt, oxides, rust and other substances, and for forming roughness on the surface, improving surface quality, and improving coating adhesion. A sand blasting machine cleans and improves the surface quality by high-speed spraying of sand (such as quartz sand, glass sand, etc.). The sand is sprayed at high speed by compressed air, motor or other equipment in the sand blasting machine, and hits the surface of the workpiece being processed, thereby removing surface impurities and forming a certain roughness. Sand blasting machines are widely used in various industries, such as automobiles, aviation, casting, electronics, construction, and mechanical manufacturing.

[0003] During the surface treatment process, a sand blasting machine produces a large amount of sand blasting residues, such as sand particles, dust, paint, dirt, etc. These sand blasting residues usually fall in the area around the treated object or in the working area of the sand blasting machine. For environmental and health management considerations, measures are usually taken to recover the sand blasting residues, which are sucked into a sand dust separator through a sand recovery pipe, and the sand and dust are separated by the sand dust separator. The useful sand is stored in a sand storage box for continuous recycling, and the dust is filtered into the system with the airflow.

[0004] However, the sand dust separator of the sand blasting machine in the related art usually uses a cyclone separator, and the system usually uses a bag-type dust collector. The cyclone separator and the bag-type dust collector are generally large in size, and the cyclone separator and the bag-type dust collector are two independent devices, which results in a complex overall structure of the sand blasting machine, a large occupied space, and poor portability. SUMMARY

[0005] The present application aims to provide a portable energy-saving and environment-friendly sand blasting machine to solve the problem of complex overall structure, large occupied space, and poor portability of the sand blasting machine in the related art.

[0006] The portable energy-saving and environment-friendly sand blasting machine provided by the present application adopts the following technical solution:

[0007] The utility model provides a portable energy -conserving environmental protection sand blasting machine, including sand dust separation bin, gas dust separation bin and dust filter piece, sand dust separation bin is equipped with sand dust gas import on, sand dust separation bin is used for separating sand in sand dust gas, gas dust separation bin is located in sand dust separation bin, gas dust separation bin is equipped with dust gas import, dust gas import is used for dust gas in sand dust separation bin enters into gas dust separation bin, dust filter piece is located in gas dust separation bin, dust filter piece is used for filtering dust in dust gas that enters gas dust separation bin, sand dust separation bin is equipped with exhaust port, exhaust port is used for the air that filtered through dust filter piece exports gas dust separation bin.

[0008] Through adopting the technical scheme, sand dust gas enters sand dust separation bin and separates out reusable sand, and the remaining dust gas enters gas dust separation bin under the action of negative pressure suction to separate dust, so that sand dust separation structure and dust removal structure are integrated together, thereby the occupied space can be reduced and the use portability is improved.

[0009] Optionally, the gas dust separation bin includes a core cylinder and a dust receiving hopper, the core cylinder and the dust receiving hopper are fixedly arranged in the sand dust separation bin, the dust receiving hopper is located below the core cylinder, the upper end of the dust receiving hopper is spaced apart from the lower end of the core cylinder, and a gap between the upper end of the dust receiving hopper and the lower end of the core cylinder forms the dust gas import.

[0010] Through adopting the technical scheme, dust separated out from dust gas can be received by the dust receiving hopper, and dust mixing with sand is avoided.

[0011] Optionally, the dust receiving hopper is conical, and a dust outlet pipe is arranged at the bottom of the dust receiving hopper and extends to the outside of the sand dust separation bin.

[0012] Through adopting the technical scheme, dust separated out from dust gas can be discharged to the outside of the sand dust separation bin through the dust outlet pipe arranged at the bottom of the dust receiving hopper.

[0013] Optionally, an annular cavity is formed between the outer sidewall of the core cylinder and the inner sidewall of the sand dust separation bin, the sand dust gas import is located on the sidewall of the sand dust separation bin and communicates with the annular cavity, and the sand dust gas import is arranged in the tangential direction of the annular cavity.

[0014] Through adopting the technical scheme, sand dust gas enters the sand dust separation bin in the tangential direction of the annular cavity, so that sand dust gas separates sand and dust gas under the action of centrifugal force, thereby improving the separation effect of sand.

[0015] Optionally, a conical baffle is further included, which is fixedly arranged in the sand-dust separation bin, and the diameter of the conical baffle gradually decreases from bottom to top, and the conical baffle covers the outside of the dust gas inlet.

[0016] By adopting the above technical scheme, the sand in the sand-dust separation bin can be prevented from entering the gas-dust separation bin through the dust gas inlet by the conical baffle.

[0017] Optionally, a pulse back-blowing system is further included, the dust filter is in a cylindrical shape, the sand-dust separation bin is provided with a pulse nozzle in communication with the inside of the dust filter, the pulse back-blowing system is in communication with the pulse nozzle, and the exhaust port is in communication with the inside of the dust filter.

[0018] By adopting the above technical scheme, the dust filter can be subjected to dust removal treatment by the pulse back-blowing system, so as to ensure the filtering performance of the dust filter.

[0019] Optionally, a sieve plate is further included, which is fixedly arranged in the sand-dust separation bin, and the sieve plate is located below the gas-dust separation bin, the sand-dust separation bin is provided with a sand outlet, and the sand outlet is located below the sieve plate.

[0020] By adopting the above technical scheme, the sand can be subjected to screening and filtering by the sieve plate, so as to improve the cleanliness of the sand when reused.

[0021] Optionally, a bin door is further included, a sand adding access is formed in the sidewall of the sand-dust separation bin, and the bin door can be opened and closed to block the sand adding access of the sand-dust separation bin.

[0022] By adopting the above technical scheme, the sand-dust separation bin can be subjected to sand adding or maintenance through the sand adding access by arranging the bin door.

[0023] Optionally, a sand blasting gun is further included, which comprises a gun body, a rotating member and a rotating driving member, the gun body is provided with an air inlet, a sand inlet and a sand return port, the sand inlet is in communication with the sand outlet, the sand return port is in communication with the sand-dust gas inlet, the rotating member is rotationally arranged in the gun body, the rotating driving member is fixedly arranged on the gun body and connected with the rotating member, the rotating member is provided with a sand blasting cavity in communication with the air inlet and the sand inlet, the rotating member is further provided with a sand blasting hole in communication with the sand blasting cavity, and the gun body is provided with annularly arranged first brush hairs.

[0024] By adopting the above technical scheme, the rotating member can be driven to rotate by the rotating driving member, so as to realize rotary sand blasting, and thus the sand blasting effect can be improved.

[0025] Optionally, the sand blasting gun further comprises a brush head, the brush head is detachably connected with the rotating member through a clamping mechanism, the brush head is provided with brush handles arranged in a circumferential direction, the brush handles are provided with second brush hairs, and a projection of the sand blasting hole in an axial direction is located between adjacent brush handles.

[0026] By adopting the above technical scheme, the brush head is detachably connected with the rotating member, so that the brush head is convenient to replace.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The sand dust gas enters the sand dust separation chamber and separates the reusable sand, and the remaining dust gas enters the gas dust separation chamber under the action of negative pressure suction to separate the dust, so that the sand dust separation structure and the dust removal structure are integrated together, thereby reducing the occupied space, improving the use portability, and facilitating transfer, transportation, storage and storage.

[0029] 2. The pulse back blowing system can perform dust removal treatment on the dust filter, thereby ensuring the filtering performance of the dust filter.

[0030] 3. The rotating driving member can drive the rotating member to rotate, so that the rotating sand blasting can be realized, and the sand blasting effect can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic view of the present application;

[0032] Figure 2 is a sectional view of the present application;

[0033] Figure 3 is a structural schematic view of the sand blasting gun;

[0034] Figure 4 is a bottom view of Figure 3 ;

[0035] Figure 5 is a bottom view of Figure 3 ;

[0036] In the drawings,

[0037] 10, sand dust separation chamber; 11, sand dust gas inlet; 12, exhaust port; 13, annular cavity; 14, pulse nozzle; 15, sand outlet; 16, sand adding maintenance opening; 17, cylinder;

[0038] 20, gas dust separation chamber; 21, dust gas inlet; 22, core barrel; 23, dust receiving hopper; 24, dust outlet pipe; 25, connecting block;

[0039] 30, dust filter; 31, support frame; 40, conical baffle; 50, pulse back-flushing system; 60, sieve plate; 70, bin door;

[0040] 80, sandblasting gun; 81, gun body; 811, air inlet; 812, sand inlet; 813, sand return; 814, first bristles; 82, rotating member; 821, sandblasting cavity; 822, sandblasting hole; 823, square protrusion; 824, insertion hole; 825, guide hole; 826, slot hole; 827, accommodating groove; 828, spring groove; 829, second gear; 8210, conical flow guide; 83, rotating driving member; 831, output shaft; 832, first gear; 84, brush head; 841, brush handle; 842, second bristles; 843, square hole; 844, limiting surface;

[0041] 90, clamping mechanism; 91, clamping member; 911, conical elastic sheet; 912, through hole; 913, limiting groove; 92, unlocking member; 921, unlocking rod; 922, wedge-shaped push block; 93, wedge-shaped lock block; 931, unlocking groove; 94, first spring; 95, second spring; 96, third spring; 100, negative pressure fan. DETAILED DESCRIPTION

[0042] The following description will be made in conjunction with the accompanying drawings. Figure 1 - the accompanying drawings Figure 5 Further details of the application will be described.

[0043] The embodiments of the application disclose a portable energy-saving and environment-friendly sandblasting machine.

[0044] Embodiment 1

[0045] Reference Figure 1 and Figure 2The utility model provides a portable energy -conserving environmental protection sand blasting machine, including sand dust separation bin 10, gas dust separation bin 20, dust filter 30, conical baffle 40, pulse back flushing system 50, sieve plate 60 and bin door 70, sand dust separation bin 10 is equipped with sand dust gas inlet 11, sand dust separation bin 10 is used to separate sand in sand dust gas, gas dust separation bin 20 is located in sand dust separation bin 10, gas dust separation bin 20 is equipped with dust gas inlet 21, dust gas inlet 21 is used for the dust gas in sand dust separation bin 10 enters gas dust separation bin 20, dust filter 30 is located in gas dust separation bin 20, dust filter 30 is used to filter the dust in the dust gas that enters gas dust separation bin 20, sand dust separation bin 10 is equipped with exhaust port 12, exhaust port 12 is used to the air after filtering by dust filter 30 exhausts gas dust separation bin 20, the portable energy -conserving environmental protection sand blasting machine of the application can be communicated with negative pressure fan 100 when working, generates negative pressure in sand dust separation bin 10 through negative pressure fan 100, sand dust gas produced by sand blasting treatment enters sand dust separation bin 10 from sand dust gas inlet 11, the sand of big density directly falls into the bottom of sand dust separation bin 10, and the dust of small density enters gas dust separation bin 20 with airflow from dust gas inlet 21 under the action of negative pressure suction, and the dust is retained in gas dust separation bin 20 after filtering by dust filter 30, and the clean air of filtering is exhausted from gas dust separation bin 20 through exhaust port 12, the portable energy -conserving environmental protection sand blasting machine of the application integrates sand dust separation structure and dust removal structure together, so as to have the advantages, such as small space occupation, convenient transfer, transportation and storage, and high use portability.

[0046] Referring to Figure 1 and Figure 2 Gas dust separation bin 20 includes a core cylinder 22 and a dust receiving hopper 23, which are fixedly arranged in the sand dust separation bin 10. An annular cavity 13 is formed between the outer sidewall of the core cylinder 22 and the inner sidewall of the sand dust separation bin 10. The sand dust gas inlet 11 is located on the sidewall of the sand dust separation bin 10 and is communicated with the annular cavity 13. The sand dust gas inlet 11 is arranged along the tangent direction of the annular cavity 13. The sand dust gas enters the annular cavity 13 along the tangent direction of the annular cavity 13. The sand dust gas rotates in the annular cavity 13. Under the action of centrifugal force, the sand and the dust gas are separated. The sand with large density falls along the inner sidewall of the sand dust separation bin 10 to the bottom of the sand dust separation bin 10. The dust with small density enters the gas dust separation bin 20 along with the airflow under the action of negative pressure suction.

[0047] Referring to Figure 1 and Figure 2The upper part of the sand-dust separation bin 10 can be cylindrical, and the lower part can be conical. The sand-dust separation bin 10 is provided with a sand outlet 15, which can be arranged at the bottom of the sand-dust separation bin 10. A sieve plate 60 is fixedly arranged in the lower part of the sand-dust separation bin 10. The sieve plate 60 is located below the sand-dust separation bin 20, and the sand outlet 15 is located below the sieve plate 60. A sand adding and maintenance opening 16 is formed in the side wall of the sand-dust separation bin 10, and a bin door 70 can be opened and closed to block the sand adding and maintenance opening 16 of the sand-dust separation bin 10. After the sand-dust gas enters the sand-dust separation bin 10, the sand and large paint blocks generated by sand blasting treatment and other impurities fall onto the sieve plate 60 after sand-gas separation. The sand falls through the sieve holes of the sieve plate 60 and falls into the sand-dust separation bin 10 below the sieve plate 60, and is discharged through the sand outlet 15 to provide sand for sand blasting. The larger impurities are retained on the sieve plate 60. The retained impurities on the sieve plate 60 can be removed from the sand-dust separation bin 10 by opening the bin door 70. The sand-dust separation bin 10 can also be supplemented with sand or maintained internally through the sand adding and maintenance opening 16. The sand outlet 15 and the lower part of the negative pressure fan 100 can be provided with a bottom plate, and the bottom plate can be provided with a roller. The roller facilitates the movement of the entire sand blasting machine to a suitable sand blasting position.

[0048] With reference to Figure 1 and Figure 2 The dust collecting hopper 23 is located below the core barrel 22. The upper end of the dust collecting hopper 23 is spaced apart from the lower end of the core barrel 22. More specifically, the dust collecting hopper 23 is spaced apart and fixedly connected to the core barrel 22 by a plurality of connecting blocks 25. The gap between the upper end of the dust collecting hopper 23 and the lower end of the core barrel 22 forms a dust gas inlet 21. After the sand-dust gas enters the sand-dust separation bin 10 and is separated by sand-gas separation, the sand with a relatively large density directly falls to the lower part of the sand-dust separation bin 10. The gas mixed with dust enters the core barrel 22 through the dust gas inlet 21, and then the gas mixed with dust is filtered by the dust filter 30. The dust in the filtered gas adheres to the outer side wall of the dust filter 30.

[0049] With reference to Figure 1 and Figure 2 The conical baffle 40 is fixedly arranged in the sand-dust separation bin 10. More specifically, the upper end of the conical baffle 40 is fixedly connected to the core barrel 22. The diameter of the conical baffle 40 gradually decreases from bottom to top. The lower end edge of the conical baffle 40 is spaced apart from the inner side wall of the sand-dust separation bin 10 to leave space for the sand to fall into the lower part of the sand-dust separation bin 10 after being separated in the annular cavity 13. The conical baffle 40 is arranged outside the dust gas inlet 21. The conical baffle 40 can make the sand fall away from the dust gas inlet 21 as much as possible during the falling process, so as to avoid the sand being sucked into the dust gas inlet 21 by the negative pressure gas flow during the falling process.

[0050] With reference to Figure 1 and Figure 2The dust filter 30 can be provided in a cylindrical shape and can be fixedly installed in the core barrel 22 through the support frame 31. The dust separation bin 10 is provided with a pulse nozzle 14 in communication with the inside of the dust filter 30. More specifically, the dust separation bin 10 is provided with a cylinder 17 in communication with the inside of the dust filter 30. The pulse nozzle 14 is in communication with the cylinder 17. The pulse blowback system 50 is in communication with the pulse nozzle 14. The exhaust port 12 is in communication with the inside of the dust filter 30 through the cylinder 17. After the dust gas entering the core barrel 22 is filtered by the dust filter 30, the dust is attached to the outer sidewall of the dust filter 30. The filtered air is discharged from the inside of the dust filter 30, the cylinder 17 and the exhaust port 12. When the dust attached to the outer sidewall of the dust filter 30 is relatively large, the pulse blowback system 50 is started. The pulse high-pressure gas flow is introduced into the inside of the dust filter 30 through the pulse nozzle 14 to blow off the dust attached to the outer sidewall of the dust filter 30. The dust collecting hopper 23 can be provided in a conical shape. The bottom of the dust collecting hopper 23 is provided with a dust discharge pipe 24 extending to the outside of the dust separation bin 10. The dust blown off by the pulse blowback system 50 falls into the dust collecting hopper 23 and is discharged out of the dust separation bin 10 through the dust discharge pipe 24.

[0051] The implementation principle of the portable energy-saving and environment-friendly sand blasting machine of the embodiment is as follows. The sand dust gas generated in the sand blasting process enters the dust separation bin 10 from the sand dust gas inlet 11 and is separated from the sand gas under the action of the airflow centrifugal force. The separated sand falls through the sieve plate 60 to the bottom of the dust separation bin 10 and is discharged from the sand outlet 15 to provide sand for the sand blasting operation. The large impurities in the sand fall onto the sieve plate 60. The impurities can be cleaned by opening the bin door 70. The separated dust gas enters the core barrel 22 through the dust gas inlet 21. After being filtered by the dust filter 30, the dust is attached to the outer sidewall of the dust filter 30. The filtered clean air is discharged from the dust separation bin 10 through the exhaust port 12. When the dust attached to the outer sidewall of the dust filter 30 is relatively large, the pulse blowback system 50 is started to blow off the dust attached to the outer sidewall of the dust filter 30. The blown-off dust falls into the dust collecting hopper 23 and is discharged out of the dust separation bin 10 through the dust discharge pipe 24.

[0052] Embodiment 2

[0053] Reference Figure 3 and Figure 4The embodiment is different from the embodiment 1 in further comprising a sand blasting gun 80. The sand blasting gun 80 comprises a gun body 81, a rotating part 82, a rotating driving part 83 and a brush head 84. The gun body 81 is provided with an air inlet 811, a sand inlet 812 and a sand return outlet 813. The air inlet 811 is communicated with a compressed air source through a first connecting pipe. The sand inlet 812 is communicated with the sand outlet 15 through a second connecting pipe. The sand return outlet 813 is communicated with the sand dust gas inlet 11 through a third connecting pipe. The rotating part 82 is rotatably arranged in the gun body 81. The rotating driving part 83 is fixedly arranged on the gun body 81 and connected with the rotating part 82. The rotating driving part 83 can drive the rotating part 82 to rotate. The rotating driving part 83 can be a motor. A first gear 832 is fixedly connected to an output shaft 831 of the motor. The rotating part 82 is provided with a second gear 829. The second gear 829 is engaged with the first gear 832.

[0054] The rotating part 82 is provided with a sand blasting cavity 821 communicated with the air inlet 811 and the sand inlet 812. The rotating part 82 is further provided with a sand blasting hole 822 communicated with the sand blasting cavity 821. The rotating part 82 is provided with a conical flow guide part 8210 for guiding airflow from the sand blasting cavity 821 into the sand blasting hole 822. The gun body 81 is provided with annularly arranged first brush hairs 814. The brush head 84 is detachably connected with the rotating part 82 through a clamping mechanism 90. The brush head 84 is provided with brush handles 841 arranged in a circumferential direction. The brush handles 841 are provided with second brush hairs 842. The projection of the sand blasting hole 822 along the axial direction is located between adjacent brush handles 841.

[0055] In use, the first brush hairs 814 and the second brush hairs 842 are attached to the surface of the automobile paint to be polished. Compressed air enters the gun body 81 through the air inlet 811 to form a negative pressure in the gun body 81. The sand in the sand dust separation bin 10 is sucked into the gun body 81 through the second connecting pipe and the sand inlet 812. Then, the sand passes through the sand blasting cavity 821 and the sand blasting hole 822 under the action of the compressed air, and then passes between adjacent brush handles 841 to hit the surface of the automobile paint. The sand after the sand blasting treatment is recycled into the sand dust separation bin 10 through the sand return outlet 813 and the third connecting pipe. While the sand is used to blast the surface of the automobile paint, the rotating part 82 is driven to rotate by the rotating driving part 83, so that the ejected sand uniformly hits the surface of the automobile paint, thereby improving the sand blasting effect. When the rotating part 82 rotates, the second brush hairs 842 are also rotated to scrape the surface of the automobile paint, thereby improving the removal effect of the automobile paint.

[0056] Reference Figure 5The specific structure of the clamping mechanism 90 and the specific connection relationship with the brush head 84 and the rotating piece 82 are as follows: the clamping mechanism 90 comprises a clamping piece 91, an unlocking piece 92, a wedge-shaped lock block 93, a first spring 94, a second spring 95 and a third spring 96, the end of the rotating piece 82 is provided as a square protruding part 823, the brush head 84 is provided with a square hole 843, the brush head 84 is sleeved on the square protruding part 823 through the square hole 843, the rotating piece 82 is provided with a plug-in hole 824 and a guide hole 825 which penetrates the plug-in hole 824, the clamping piece 91 is inserted into the plug-in hole 824, the clamping piece 91 is provided with a conical spring piece 911, the brush head 84 is provided with a limiting surface 844, the conical spring piece 911 abuts against the limiting surface 844, the clamping piece 91 is provided with a through hole 912 and a limiting slot 913, the wedge-shaped lock block 93 is slidingly inserted into the guide hole 825, the wedge-shaped lock block 93 is detachably clamped in the limiting slot 913, the two ends of the first spring 94 abut against the wedge-shaped lock block 93 and the end surface of the guide hole 825 respectively, and the wedge-shaped lock block 93 is provided with an unlocking slot 931.

[0057] The rotating piece 82 is provided with a slot hole 826 which communicates with the plug-in hole 824, and is further provided with a containing slot 827 which communicates with the slot hole 826 and the guide hole 825, the unlocking piece 92 is slidingly inserted into the slot hole 826 and the through hole 912, the unlocking piece 92 is provided with an unlocking rod 921, the unlocking rod 921 slidingly penetrates the containing slot 827 and the unlocking slot 931, the end of the unlocking rod 921 is provided with a wedge-shaped push block 922, the wedge-shaped push block 922 can abut against one side wall of the unlocking slot 931, and the other side wall of the unlocking slot 931 is spaced apart from the unlocking rod 921.

[0058] The second spring 95 is arranged in the slot hole 826, the two ends of the second spring 95 abut against the unlocking piece 92 and the end surface of the slot hole 826 respectively, the rotating piece 82 is provided with a spring slot 828 which communicates with the plug-in hole 824, and the third spring 96 is located in the spring slot 828, the two ends of the third spring 96 abut against the clamping piece 91 and the end surface of the spring slot 828 respectively.

[0059] The implementation principle of the portable energy-saving and environment-friendly sand blasting machine is as follows: when the sand blasting treatment of the car paint is needed, the operator holds the gun body 81, and the first brush 814 and the second brush 842 are attached to the surface of the car paint, the compressed air enters the gun body 81 through the air inlet 811, the sand in the sand dust separation bin 10 is sucked into the gun body 81 through the sand inlet 812, then the sand passes through the sand blasting cavity 821 and the sand blasting hole 822, and then is shot between the adjacent brush handles 841 to hit the surface of the car paint, so that the sand blasting treatment of the car paint is realized, the sand after the sand blasting treatment is recycled to the sand dust separation bin 10 through the sand return port 813, at the same time, the rotating driving piece 83 drives the rotating piece 82 to rotate, so that the shot sand uniformly hits the surface of the car paint, and at the same time, the second brush 842 is driven to rotate by the rotating piece 82, so that the surface of the car paint is scraped and brushed.

[0060] If the second bristle 842 is worn and needs to be replaced, use a rod-shaped tool to... Figure 5 The unlocking member 92 is pushed upwards. When the unlocking member 92 moves upwards, it causes the inclined surface of the wedge-shaped push block 922 to slide against one side wall of the unlocking groove 931, thereby pushing the wedge-shaped locking block 93 to move along the guide hole 825, so that the wedge-shaped locking block 93 exits from the limiting groove 913. Then, the snap-fit ​​member 91 is dislodged from the insertion hole 824 under the elastic force of the third spring 96 and separated from the rotating member 82. At this time, the conical spring 911 loses its limiting effect on the brush head 84, and the brush head 84 can be removed from the rotating member 82 to replace the second bristle 842. When installing the brush head 84 with the new second bristles 842, first insert the snap-fit ​​piece 91 into the insertion hole 824. After the snap-fit ​​is in place, the wedge-shaped locking block 93 automatically snaps into the limiting groove 913 to lock the snap-fit ​​piece 91. Then, put the brush head 84 onto the square protrusion 823 of the rotating part 82. After the brush head 84 is in place, the conical spring piece 911 abuts against the limiting surface 844, and the brush head 84 can be fixedly installed on the rotating part 82.

[0061] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable energy-saving and environment-friendly sand blasting machine, characterized in that, The sand dust separation bin (10) is provided with a sand dust gas inlet (11), the sand dust separation bin (10) is provided with a sand outlet (15), the sand dust separation bin (10) is used for separating sand in sand dust gas, the gas dust separation bin (20) is arranged in the sand dust separation bin (10), the gas dust separation bin (20) is provided with a dust gas inlet (21), the dust gas inlet (21) is used for the dust gas in the sand dust separation bin (10) to enter the gas dust separation bin (20), the dust filter (30) is arranged in the gas dust separation bin (20), the dust filter (30) is used for filtering dust in the dust gas entering the gas dust separation bin (20), the sand dust separation bin (10) is provided with an exhaust port (12), the exhaust port (12) is used for the air filtered by the dust filter (30) to be discharged from the gas dust separation bin (20); The gas dust separation bin (20) comprises a core barrel (22) and a dust collecting hopper (23), the core barrel (22) and the dust collecting hopper (23) are fixedly arranged in the sand dust separation bin (10), the dust collecting hopper (23) is located below the core barrel (22), the upper end of the dust collecting hopper (23) is arranged in a spaced manner with the lower end of the core barrel (22), and a gap between the upper end of the dust collecting hopper (23) and the lower end of the core barrel (22) forms the dust gas inlet (21); The sand blasting gun (80) further comprises a brush head (84), the brush head (84) is detachably connected with the rotating piece (82) through the clamping mechanism (90), the brush head (84) is provided with brush handles (841) arranged in a circumferential direction, the brush handles (841) are provided with second brush hairs (842), and a projection of the sand blasting hole (822) in an axial direction is located between adjacent brush handles (841). The dust collecting hopper (23) is conical, the bottom of the dust collecting hopper (23) is provided with a dust outlet pipe (24), and the dust outlet pipe (24) extends to the outside of the sand dust separation bin (10).

2. The portable energy-saving and environment-friendly sand blasting machine according to claim 1, characterized in that, The sand dust separation bin (10) is provided with a sand dust gas inlet (11), the sand dust separation bin (10) is provided with a sand outlet (15), the sand dust separation bin (10) is used for separating sand in sand dust gas, the gas dust separation bin (20) is arranged in the sand dust separation bin (10), the gas dust separation bin (20) is provided with a dust gas inlet (21), the dust gas inlet (21) is used for the dust gas in the sand dust separation bin (10) to enter the gas dust separation bin (20), the dust filter (30) is arranged in the gas dust separation bin (20), the dust filter (30) is used for filtering dust in the dust gas entering the gas dust separation bin (20), the sand dust separation bin (10) is provided with an exhaust port (12), the exhaust port (12) is used for the air filtered by the dust filter (30) to be discharged from the gas dust separation bin (20); The gas dust separation bin (20) comprises a core barrel (22) and a dust collecting hopper (23), the core barrel (22) and the dust collecting hopper (23) are fixedly arranged in the sand dust separation bin (10), the dust collecting hopper (23) is located below the core barrel (22), the upper end of the dust collecting hopper (23) is arranged in a spaced manner with the lower end of the core barrel (22), and a gap between the upper end of the dust collecting hopper (23) and the lower end of the core barrel (22) forms the dust gas inlet (21); The sand blasting gun (80) further comprises a brush head (84), the brush head (84) is detachably connected with the rotating piece (82) through the clamping mechanism (90), the brush head (84) is provided with brush handles (841) arranged in a circumferential direction, the brush handles (841) are provided with second brush hairs (842), and a projection of the sand blasting hole (822) in an axial direction is located between adjacent brush handles (841). The dust collecting hopper (23) is conical, the bottom of the dust collecting hopper (23) is provided with a dust outlet pipe (24), and the dust outlet pipe (24) extends to the outside of the sand dust separation bin (10).

3. The portable energy-saving and environment-friendly sand blasting machine according to claim 1, characterized in that, An annular cavity (13) is formed between the outer sidewall of the core barrel (22) and the inner sidewall of the sand dust separation bin (10), the sand dust gas inlet (11) is located on the sidewall of the sand dust separation bin (10) and communicates with the annular cavity (13), and the sand dust gas inlet (11) is arranged in a tangential direction of the annular cavity (13).

4. The portable energy-saving and environment-friendly sand blasting machine according to claim 1, characterized in that, Further comprising a conical baffle (40) fixedly arranged in the sand dust separation bin (10), the diameter of the conical baffle (40) gradually decreases from bottom to top, and the conical baffle (40) covers the outside of the dust gas inlet (21).

5. The portable energy-saving and environment-friendly sand blasting machine according to claim 1, characterized in that, Further comprising a pulse blowback system (50), the dust filter (30) is in a cylindrical shape, the sand dust separation bin (10) is provided with a pulse nozzle (14) communicating with the inside of the dust filter (30), the pulse blowback system (50) communicates with the pulse nozzle (14), and the exhaust port (12) communicates with the inside of the dust filter (30).

6. The portable, energy efficient, environmentally friendly sandblaster of claim 1, wherein, Further comprising a sieve plate (60) fixedly arranged in the sand dust separation bin (10), the sieve plate (60) is located below the gas dust separation bin (20), and the sand outlet (15) is located below the sieve plate (60).

7. The portable, energy efficient, environmentally friendly sandblaster of claim 1, wherein, Further comprising a bin door (70), the sidewall of the sand dust separation bin (10) is provided with a sand adding access hole (16), and the bin door (70) can be opened and closed to block the sand adding access hole (16) of the sand dust separation bin (10).

Images