A mobile dust-collecting sandblasting machine

Abstract

This utility model relates to the field of sandblasting machine technology, specifically to a mobile dust-collecting sandblasting machine. The mobile dust-collecting sandblasting machine provided by this utility model includes a casing, a sand chamber, a dust collector, a sand collection bucket, a filter element, a sealing cover, a support plate, and a dust inlet channel. The casing has an internal cavity, and the sand chamber is installed within this cavity. The sand chamber has an opening at the top, a sand inlet on its side wall, and a sand outlet at its bottom. The support plate is installed on the inner wall of the sand chamber to support the sand collection bucket. The sealing cover covers the top opening of the sand chamber and is higher than the support plate. The space below the sealing cover within the sand chamber forms a sand storage cavity. This design achieves physical separation of sand particles and dust. The sand particles recovered to the bottom of the sand chamber contain almost no sand or only a small amount of sand, allowing for direct recycling and significantly improving sand utilization.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting machine technology, specifically to a mobile dust-collecting sandblasting machine. Background Technology

[0002] Sandblasting machines use compressed air as power to form a high-speed jet that propels abrasive materials (steel grit, quartz sand, corundum, glass sand, resin sand) onto the surface of the workpiece to be treated. This causes changes in the mechanical properties of the workpiece's outer surface. Due to the impact and cutting action of the abrasive material on the workpiece surface, the workpiece surface achieves a certain degree of cleanliness and different roughness, thereby improving the mechanical properties of the workpiece surface.

[0003] Existing sandblasting machines generate a large amount of sand and dust during operation. This dust floats in the air, polluting it and is easily inhaled by workers, posing a health hazard. A new type of dust-collecting sandblasting machine has emerged, capable of simultaneously performing sandblasting and dust removal. For example, Chinese Patent No. CN221088678U discloses a mobile dust-collecting sandblasting machine. This machine integrates a dust-collecting component with the sandblasting assembly, allowing sandblasting and dust removal to occur concurrently. This absorbs the generated dust during sandblasting, reducing air pollution caused by the dust floating in the air.

[0004] However, in actual operation, current dust-collecting sandblasting machines suck sand particles and dust into the sand chamber together. Some of the dust is adsorbed onto the filter element. Due to the limited surface area of ​​the filter element, most of the dust will still mix with the sand particles in the sand chamber. The dust will then hinder the effective impact of the sand particles, resulting in a poor surface treatment effect on the workpiece. Moreover, after the machine stops, the dust adsorbed on the filter element will fall off and mix with the sand particles in the sand chamber. Summary of the Invention

[0005] (I) The problem to be solved by this utility model is that in the actual operation of traditional dust-collecting sandblasting machines, sand particles and dust are sucked into the sand chamber together. Some of the dust is adsorbed on the filter element. Due to the limited surface area of ​​the filter element, most of the dust will still be mixed with the sand particles in the sand chamber. The dust will hinder the effective impact of the sand particles, resulting in a poor surface treatment effect of the workpiece.

[0006] (II) Technical Solution

[0007] A mobile dust-collecting sandblasting machine includes a housing, a sand bin, a dust collector, a sand collection bucket, a filter element, a sealing cover, a support plate, and a dust inlet channel. The housing has a receiving cavity, and the sand bin is installed in the receiving cavity.

[0008] The sand silo has an opening at the top, a sand inlet on the side wall, and a sand outlet at the bottom. The support plate is installed on the inner wall of the sand silo to support the sand collection bucket. The sealing cover is used to cover the top opening of the sand silo and is higher than the support plate. The space below the sealing cover inside the sand silo forms a sand storage cavity. The sealing cover has a hole. The vacuum cleaner is higher than the sealing cover and acts on the hole of the sealing cover.

[0009] The filter element is detachably installed on the bottom surface of the sealing cover, and the filter element is coaxially arranged with the hole on the sealing cover;

[0010] The sand collection bucket is detachably installed on the support plate, and the dust inlet channel is formed on the sand collection bucket, or the dust inlet channel is formed on the support plate, or the dust inlet channel is formed on both the sand collection bucket and the support plate.

[0011] The sand collecting bucket has a sand collecting cavity, and the sand storage cavity and the sand collecting cavity are connected through the dust inlet channel.

[0012] According to one embodiment of the present invention, the bearing plate is an annular plate, and the outer circumferential surface of the top of the sand collecting bucket is provided with an annular plate, which rests on the bearing plate.

[0013] According to one embodiment of the present invention, the outer diameter of the sand collecting bucket is smaller than the inner diameter of the bearing plate, and the dust inlet channel includes a plurality of second holes, which are disposed on the ring plate.

[0014] According to one embodiment of the present invention, the dust inlet channel further includes a plurality of first holes, which are disposed on the support plate.

[0015] According to one embodiment of the present invention, the outer diameter of the ring plate is the same as the inner diameter of the sand collecting bucket, and a second sealing ring is provided at the bottom of the ring plate and coaxially arranged therewith. The sand collecting bucket is sealed to the sand hopper through the second sealing ring.

[0016] According to one embodiment of the present invention, a top cover is included, the top of the housing is provided with an opening, the top cover is hinged to the top opening of the housing, and the vacuum cleaner is detachably installed on the inner surface of the top cover; when the top cover is in a closed state, the bottom of the vacuum cleaner acts on the hole of the sealing cover.

[0017] According to one embodiment of the present invention, a rubber ring is provided on the hole of the sealing cap.

[0018] According to one embodiment of the present invention, the bottom surface of the sealing cover is provided with a first sealing ring, and the sealing cover is sealed and installed inside the sand hopper by the first sealing ring.

[0019] According to one embodiment of the present invention, a mobile trolley is installed at the bottom of the housing.

[0020] According to one embodiment of the present invention, the invention includes a sandblasting pipe, a sand suction pipe, an air pipe, and a spray gun assembly. One end of the sandblasting pipe is connected to the sand inlet on the sand chamber, and the other end is connected to the spray gun assembly. One end of the sand suction pipe is connected to the sand outlet on the sand chamber, and the other end is connected to the spray gun assembly. The other end of the air pipe is connected to a quick connector on the sand chamber.

[0021] The beneficial effects of this utility model are:

[0022] After the dust-laden sand mixture enters the sand chamber, under the negative pressure generated by the vacuum cleaner, the sand particles, dominated by gravity, settle directly to the bottom of the sand chamber, while the dust particles are adsorbed by the negative pressure and forced through the dust inlet channel into the sand collection bucket. This achieves physical separation of sand particles and dust. Firstly, the sand particles recovered to the bottom of the sand chamber contain almost no dust or only a small amount, allowing for direct recycling and significantly improving sand utilization and reducing the cost of replenishing new sand. Secondly, the pure sand particles have strong impact force and stable surface treatment effects, avoiding the problems of reduced sandblasting efficiency and substandard workpiece surface roughness caused by dust encapsulating the sand particles. Thirdly, since dust almost never mixes into the sandblasting system, the risk of nozzle clogging due to dust accumulation is greatly reduced, improving the stability of continuous operation. Fourthly, because the sealing cover and sand collection bucket can be disassembled independently, they can be easily removed and emptied after being filled with dust. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A perspective view provided for an embodiment of this utility model;

[0025] Figure 2 A cross-sectional view provided for an embodiment of this utility model;

[0026] Figure 3 Cross-sectional views of the sand hopper, top cover, and vacuum cleaner provided for embodiments of this utility model;

[0027] Figure 4 A schematic diagram showing the combined state of the sand collection bucket, filter element, sealing cover and support plate provided in an embodiment of this utility model;

[0028] Figure 5 A cross-sectional view of the sand collection bucket, filter element, sealing cover and support plate in an assembly state provided in an embodiment of this utility model;

[0029] Figure 6 Exploded view of the sand collection bucket, filter element, sealing cover and support plate provided for embodiments of this utility model;

[0030] Figure 7 Provided for the embodiments of this utility model Figure 6 A sectional view.

[0031] Icons: 1. Housing; 101. Wheel; 102. Caster wheel; 103. Handle; 2. Top cover; 3. Spray gun assembly; 4. Suction pipe; 5. Sandblasting pipe; 6. Sand chamber; 7. Storage box; 8. Vacuum cleaner; 9. Filter element; 10. Sand collection bucket; 1001. Ring plate; 1002. Second hole body; 11. Sealing cover; 12. Rubber ring; 13. Support plate; 131. First hole body; 14. Screw fastener; 141. Fixing plate; 142. Screw; 143. Wing nut; 15. First sealing ring; 16. Second sealing ring. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] like Figures 1-7 As shown, one embodiment of this utility model provides a mobile dust-collecting sandblasting machine, including a housing 1, a sand chamber 6, a dust collector 8, a sand collection bucket 10, a filter element 9, a sealing cover 11, a support plate 13, and a dust inlet channel. A receiving cavity is formed inside the housing 1, and the sand chamber 6 is installed in the receiving cavity.

[0034] The sand bin 6 has an opening at the top, a sand inlet on the side wall, and a sand outlet at the bottom. The support plate 13 is installed on the inner wall of the sand bin 6 to support the sand collection bucket 10. The sealing cover 11 is used to cover the top opening of the sand bin 6 and is higher than the support plate 13. The space inside the sand bin 6 below the sealing cover 11 forms a sand storage cavity. The sealing cover 11 has a hole. The vacuum cleaner 8 is higher than the sealing cover 11 and acts on the hole of the sealing cover 11.

[0035] The filter element 9 is detachably installed on the bottom surface of the sealing cover 11, and the filter element 9 is coaxially arranged with the hole on the sealing cover 11;

[0036] The sand collection bucket 10 is detachably installed on the support plate 13. The dust inlet channel is formed on the sand collection bucket 10, or the dust inlet channel is formed on the support plate 13, or the dust inlet channel is formed on both the sand collection bucket 10 and the support plate 13.

[0037] The sand collecting chamber is formed inside the sand collecting bucket 10, and the sand storage chamber and the sand collecting chamber are connected by the dust inlet channel.

[0038] In this embodiment, after sand particles and dust enter the sand chamber 6 together through the sand inlet, the pressure inside the sand chamber 6 decreases rapidly due to the operation of the vacuum cleaner 8. Since the weight of the sand particles is much greater than that of the dust, under the action of negative pressure, the dust enters the sand collection bucket 10 through the dust inlet channel, while the sand particles fall to the bottom of the sand chamber 6 under gravity. This effectively separates the sand particles and dust. It should be noted that when this mobile dust-collecting sandblasting machine is working, some dust will adhere to the filter element 9. When the machine stops, some of the dust on the filter element 9 will fall into the sand collection bucket 10.

[0039] In this embodiment, the support plate 13 is circular in shape and is welded to the inner wall of the sand hopper 6 to support the sand collection bucket 10 and the sealing cover 11. The outer circumference of the top of the sand collection bucket 10 is provided with a ring plate 1001, which rests on the support plate 13, so that the support plate 13 can support the sand collection bucket 10.

[0040] It should be noted that the dust inlet channel can be formed on the bearing plate 13, on the sand collection bucket 10, or on both the bearing plate 13 and the sand collection bucket 10.

[0041] As a specific embodiment, such as Figure 2 and Figure 3 As shown, the outer diameter of the sand collecting bucket 10 is smaller than the inner diameter of the supporting plate 13, and the outer diameter of the annular plate 1001 of the sand collecting bucket 10 is the same as the inner diameter of the sand hopper 6. A second sealing ring 16 is fixedly installed at the bottom edge of the annular plate 1001, and the outer diameter of the second sealing ring 16 is slightly larger than the inner diameter of the sand hopper 6. A plurality of second holes 1002 are evenly opened around the axis of the annular plate 1001, and the second holes 1002 are located inside the second sealing ring 16. The second holes 1002 on the annular plate 1001 constitute a dust inlet channel.

[0042] That is, after the sand particles and sand dust enter the sand chamber 6 together from the sand inlet, the sand dust can directly enter the interior of the sand collection bucket 10 from the second hole 1002 on the ring plate 1001 of the sand collection bucket 10.

[0043] It should be noted that the function of the second sealing ring 16 is to improve the sealing performance, prevent sand and dust from escaping from the gap between the sand collection bucket 10 and the inner wall of the sand chamber 6, and prevent the internal pressure of the sand chamber 6 from leaking.

[0044] Optionally, to improve the stability of the sand collection bucket 10, screws or bolts can be used to fix the ring plate 1001 of the sand collection bucket 10 to the bearing plate 13.

[0045] In another specific embodiment, based on the previous embodiment, multiple first holes 131 are formed on the support plate 13, and these first holes 131 are connected to the second holes 1002 on the ring plate 1001. In this way, some sand and dust can directly enter the second holes 1002 from the first holes 131 on the support plate 13, thereby entering the interior of the sand collection bucket 10, expanding the entry path of sand and dust and improving the efficiency of sand and dust entering the sand collection bucket 10.

[0046] As an optional embodiment, in this embodiment, the outer diameter of the sand collecting bucket 10 is the same as the inner diameter of the supporting plate 13, so that the inner wall of the sand collecting bucket 10 is tightly attached to the inner wall of the supporting plate 13; the outer diameter of the annular plate 1001 of the sand collecting bucket 10 is the same as the inner diameter of the sand hopper 6, that is, the annular plate 1001 of the sand collecting bucket 10 fits against the inner wall of the sand hopper 6. A second sealing ring 16 is fixedly installed at the bottom edge of the annular plate 1001, and the outer diameter of the second sealing ring 16 is slightly larger than the inner diameter of the sand hopper 6. A corresponding second hole 1002 and a first hole 131 are respectively opened on the annular plate 1001 and the supporting plate 13. At this time, the second hole 1002 on the annular plate 1001 and the first hole 131 on the supporting plate 13 constitute part of the dust inlet channel. At this point, after the sand particles and dust enter the sand chamber 6 together through the sand inlet, the dust can only enter through the first hole 131 of the support plate 13, then enter the space between the ring plate 1001 and the support plate 13, and finally enter the interior of the sand collection bucket 10 through the second hole 1002 on the ring plate 1001. Furthermore, to improve sealing, a sealing ring can be installed between the inner wall of the support plate 13 and the outer circumferential surface of the sand collection bucket 10.

[0047] As another optional embodiment, the outer diameter of the sand collecting bucket 10 is the same as the inner diameter of the supporting plate 13, so that the inner wall of the sand collecting bucket 10 is tightly attached to the inner wall of the supporting plate 13. The outer diameter of the ring plate 1001 of the sand collecting bucket 10 is smaller than the outer diameter of the supporting plate 13, that is, the ring plate 1001 of the sand collecting bucket 10 rests on the inner edge of the supporting plate 13. A second sealing ring 16 is provided at the bottom of the ring plate 1001. The outer diameter of the second sealing ring 16 is slightly larger than the inner diameter of the supporting plate 13. The ring plate 1001, the second sealing ring 16, and the supporting plate 13 are fixed together by bolts. Furthermore, a plurality of first holes 131 are evenly formed on the supporting plate 13 around its axis.

[0048] At this time, the sand and dust in the sand chamber 6 can only enter the sand collection bucket 10 through the first hole 131 on the bearing plate 13.

[0049] In this embodiment, a first sealing ring 15 is installed on the bottom surface of the sealing cover 11. The outer diameter of the first sealing ring 15 is slightly larger than the inner diameter of the sand chamber 6. That is, when the sealing cover 11 is inserted into the sand chamber 6, the first sealing ring 15 fits tightly against the inner wall of the sand chamber 6, thereby achieving a strong sealing effect.

[0050] Optionally, in order to improve the stability of the sealing cover 11 and the sand collection bucket 10, bolts and nuts can be used to connect the sealing cover 11, the ring plate 1001 of the sand collection bucket 10 and the bearing plate 13 together in sequence.

[0051] In this embodiment, since the sealing cap 11 can be removed from the sand chamber 6 and the sand collection bucket 10 can also be removed from the sand chamber 6, it is convenient to clean the sand and dust inside the sand collection bucket 10.

[0052] In this embodiment, the top of the housing 1 has an opening, and the top cover 2 is hinged to the top opening of the housing 1. The vacuum cleaner 8 is detachably mounted on the inner surface of the top cover 2. When the top cover 2 is in the closed state, such as Figure 2 As shown, at this time, the bottom of the vacuum cleaner 8 acts on the hole of the sealing cover 11.

[0053] To improve the seal between the bottom of the vacuum cleaner 8 and the sealing cover 11, such as Figure 5 and Figure 6 As shown, a rubber ring 12 is provided on the hole of the sealing cover 11. In this way, after the top cover 2 is closed, the output end of the vacuum cleaner 8 is sealed with the rubber ring 12 on the hole of the sealing cover 11, which enhances the sealing performance between the vacuum cleaner 8 and the hole.

[0054] In this embodiment, the filter element 9 is detachably mounted on the sealing cover 11 via a screw fastener 14. Specifically, the screw fastener 14 is as follows: Figure 5 As shown, it includes a fixing plate 141, a screw 142, and a wing nut 143. The fixing plate 141 is in the shape of an inverted V and is fixed to the bottom surface of the sealing cover 11 by screws. The screw 142 is welded to the bottom surface of the fixing plate 141, and the wing nut 143 is threaded onto the screw 142. When installing the filter element 9 onto the sealing cover 11, first install the fixing plate 141 onto the sealing cover 11, then fit the filter element 9 against the bottom surface of the sealing cover 11, allowing the screw 142 to pass through the round hole at the bottom of the filter element 9, and finally screw the wing nut 143 onto the bottom end of the screw 142 and tighten it.

[0055] In this embodiment, as Figure 2 and Figure 3 As shown, the sand inlet on the side wall of the sand bin 6 is located at the bottom of the support plate 13 and close to the support plate 13. Since the negative pressure is greater the closer to the vacuum cleaner 8, the sand entering from the sand inlet can be quickly sucked into the sand collection bucket 10 from the dust inlet channel.

[0056] In some embodiments, to more quickly separate sand particles and dust, such as Figure 2 As shown, a frame is provided on the inner wall of the sand silo 6. The frame is screwed or welded to the inner wall of the sand silo 6. The frame faces the sand inlet of the sand silo 6 and is an arc-shaped frame. The frame is fitted along the inner wall of the sand silo 6 to form the arc shape. In addition, the sand inlet of the sand silo 6 is inclined. Specifically, the axis of the sand inlet is offset from the axis of the sand silo 6. More specifically, the axis of the sand inlet is tangent to the outer peripheral surface of the sand collection bucket 10. In this way, under the action of negative pressure, the sand particles and dust entering from the sand inlet are discharged from one end of the arc-shaped frame along the inner wall of the arc-shaped frame and form a cyclone, which helps to separate the sand particles and dust.

[0057] In some embodiments, the frame is spiral-shaped and is spirally arranged to fit the inner wall of the sand chamber 6, so that the first end of the frame is higher than the second end. In this way, the sand particles and sand dust entering from the sand inlet are discharged from the first end outlet of the arc-shaped frame along the inner wall of the frame. When discharged, it is easier to form a cyclone, the sand dust spirals upward, and the sand gravel falls down along the inner wall of the sand chamber 6, resulting in a better separation effect of sand particles and sand dust.

[0058] In this embodiment, as Figure 1 and Figure 2 As shown, it also includes a mobile trolley, which includes a base, two casters 102 and two wheels 101. The two casters 102 are mounted on the same side of the mobile trolley, and the two wheels 101 are mounted on the other side of the mobile trolley. The housing 1 is mounted on the base of the mobile trolley.

[0059] In some embodiments, such as Figure 2 As shown, a handle 103 is installed on the housing 1 to facilitate pushing this mobile dust-collecting sandblasting machine.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the front of the casing 1 has two parallel vertical plates, and multiple storage boxes 7 are arranged between the two vertical plates. A locking block is provided on the front of the casing 1, and a slot is installed on each storage box 7. Through the cooperation of the locking block and the slot, the storage box 7 can be installed onto the casing 1 or quickly removed. The storage boxes 7 can hold tools, etc.

[0061] The following describes some of the structures of existing sandblasting machines, such as the sandblasting pipe 5, the suction pipe 4, the air pipe, and the spray gun assembly 3. One end of the sandblasting pipe 5 is connected to the spray gun tower externally at the sand inlet of the sand chamber 6, and the other end is connected to the spray gun assembly 3. One end of the suction pipe 4 is connected to the rigid pipe at the sand outlet of the sand chamber 6, and the other end is connected to the spray gun assembly 3. One end of the air pipe is connected to the quick connector on the sand chamber 6, and the other end is connected to the spray gun assembly 3. For the specific sandblasting process of existing sandblasting machines, please refer to the mobile dust-collecting sandblasting machine published in CN221088678U; it will not be elaborated upon here.

[0062] In summary, this mobile dust-collecting sandblasting machine adds a sand collection bin 10 and a dust inlet channel to the traditional dust-collecting sandblasting machine. Thus, after the dust-laden sand mixture enters the sand chamber 6, under the negative pressure generated by the dust collector 8, the sand particles, dominated by gravity, settle directly to the bottom of the sand chamber 6, while the dust particles are adsorbed by the negative pressure and forced through the dust inlet channel (the holes on the bearing plate 13 / ring plate 1001) into the sand collection bin 10. This achieves physical separation of sand particles and dust. Firstly, the sand particles recovered to the bottom of the sand chamber 6 contain almost no dust or only a small amount, allowing for direct recycling and significantly improving sand particle utilization and reducing the cost of replenishing new sand. Secondly, the pure sand particles have strong impact force and stable surface treatment effect, avoiding the problems of reduced sandblasting efficiency and substandard workpiece surface roughness caused by dust encapsulating the sand particles. Thirdly, since dust no longer mixes into the sandblasting system, the risk of nozzle clogging due to dust accumulation is greatly reduced, improving the stability of continuous operation. Fourth, since the sealing cover 11 and the sand collection bucket 10 can be disassembled independently, they can be easily removed and emptied after being filled with dust.

[0063] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mobile dust extraction sandblasting machine, characterized in that It includes a housing (1), a sand chamber (6), a vacuum cleaner (8), a sand collection bucket (10), a filter element (9), a sealing cover (11), a support plate (13), and a dust inlet channel. The housing (1) has a receiving cavity, and the sand chamber (6) is installed in the receiving cavity. The sand silo (6) has an opening at the top, a sand inlet on the side wall of the sand silo (6), and a sand outlet at the bottom; the support plate (13) is installed on the inner wall of the sand silo (6) to support the sand collection bucket (10); the sealing cover (11) is used to cover the top opening of the sand silo (6) and is higher than the support plate (13); the space inside the sand silo (6) below the sealing cover (11) forms a sand storage cavity; the sealing cover (11) has a hole; the vacuum cleaner (8) is higher than the sealing cover (11) and acts on the hole of the sealing cover (11); The filter element (9) is detachably installed on the bottom surface of the sealing cover (11), and the filter element (9) and the hole on the sealing cover (11) are coaxially arranged. The sand collection bucket (10) is detachably installed on the support plate (13), and the dust inlet channel is formed on the sand collection bucket (10), or the dust inlet channel is formed on the support plate (13), or the dust inlet channel is formed on both the sand collection bucket (10) and the support plate (13). The sand collecting bucket (10) has a sand collecting cavity, and the sand storage cavity and the sand collecting cavity are connected through the dust inlet channel.

2. The mobile dust-collecting sandblasting machine according to claim 1, characterized in that, The bearing plate (13) is an annular plate, and the outer circumference of the top of the sand collection bucket (10) is provided with an annular plate (1001), which rests on the bearing plate (13).

3. A mobile dust-collecting sandblasting machine according to claim 2, characterized in that, The outer diameter of the sand collection bucket (10) is smaller than the inner diameter of the bearing plate (13), and the dust inlet channel includes a plurality of second holes (1002), which are disposed on the ring plate (1001).

4. A mobile dust-collecting sandblasting machine according to claim 3, characterized in that, The dust inlet channel also includes a plurality of first holes (131), which are disposed on the support plate (13).

5. A mobile dust-collecting sandblasting machine according to claim 4, characterized in that, The outer diameter of the ring plate (1001) is the same as the inner diameter of the sand collection bucket (10). The bottom of the ring plate (1001) is provided with a second sealing ring (16) coaxially arranged with it. The sand collection bucket (10) is sealed to the sand hopper (6) through the second sealing ring (16).

6. A mobile dust-collecting sandblasting machine according to claim 5, characterized in that, Includes a top cover (2), the top of the housing (1) has an opening, the top cover (2) is hinged to the top opening of the housing (1), and the vacuum cleaner (8) is detachably installed on the inner surface of the top cover (2); when the top cover (2) is in the closed state, the bottom of the vacuum cleaner (8) acts on the hole of the sealing cover (11).

7. A mobile dust-collecting sandblasting machine according to claim 6, characterized in that, A rubber ring (12) is provided on the hole of the sealing cap (11).

8. A mobile dust-collecting sandblasting machine according to claim 6, characterized in that, The bottom surface of the sealing cover (11) is provided with a first sealing ring (15), and the sealing cover (11) is sealed and installed inside the sand hopper (6) by the first sealing ring (15).

9. A mobile dust-collecting sandblasting machine according to any one of claims 1-8, characterized in that, A mobile trolley is installed at the bottom of the housing (1).

10. A mobile dust-collecting sandblasting machine according to any one of claims 1-8, characterized in that, It includes a sandblasting pipe (5), a sand suction pipe (4), an air pipe, and a spray gun assembly (3). One end of the sandblasting pipe (5) is connected to the sand inlet on the sand chamber (6), and the other end is connected to the spray gun assembly (3). One end of the sand suction pipe (4) is connected to the sand outlet on the sand chamber (6), and the other end is connected to the spray gun assembly (3). The other end of the air pipe is connected to the quick connector on the sand chamber (6).

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