Portable sand mill with auxiliary structure

Abstract

The invention discloses a portable sand mill with an auxiliary structure, and relates to the technical field of portable sand mills, the portable sand mill comprises a mounting tray, a dustproof protective sleeve is arranged above the mounting tray, a first mounting seat is arranged above the dustproof protective sleeve, a sand storage bin is mounted in the first mounting seat, and a second mounting seat is arranged above the dustproof protective sleeve. The sand storage bin is in threaded connection with the interior of the first mounting base, a supporting plate is arranged above the sand storage bin, a second mounting base is arranged on one side of the dustproof protective sleeve, a handle rod is arranged in the second mounting base and is in threaded connection with the interior of the second mounting base, and grooves are formed in the upper end face and the lower end face of the handle rod correspondingly. According to the scheme, the sand mill solves the problems that in the prior art, a sand mill is of a horizontal structure, the size is large, the sand mill is inconvenient to carry, and therefore the use flexibility and convenience of the sand mill are affected.

Description

Technical Field

[0001] The invention relates to the technical field of portable sand mills, in particular to a portable sand mill with an auxiliary structure. Background Art

[0002] Sand mill is the most widely adaptable, most advanced and most efficient grinding equipment. It has the narrowest grinding chamber, the smallest lever gap and the most intensive grinding energy. It is widely used in many fields, including paint, ink, medicine, food, cosmetics, pesticide and other industries. Due to its simple operation and continuous production, it not only improves product quality but also reduces costs.

[0003] For example, the Chinese authorized patent with announcement number CN215234900U (a portable sand mill): a driving wheel is provided at the bottom of the bottom plate of the walking device, and a protective plate and a holder are provided on the bottom plate; the vertical plate is fixed between the bottom plate and the top plate by bolts, and a solar cell panel is provided on the top plate; a sealing cover is provided at the upper end of the sand storage bin of the sand mill device, a sand outlet pipe is provided at the center of the lower end of the sand storage bin, a circular hole is provided at the center of the support, the sand outlet pipe passes through the support through the circular hole, a sand inlet pipe is provided on one side of the sand storage bin, a connecting plate is provided at the lower end of the support, a shock absorbing device is provided between the connecting plate and the support, a base is provided at the lower end of the connecting plate, and the connecting plate is fixed to the base by a locking member; the base is fixed to the bottom plate by bolts, and a walking device is added to the sand mill, and the driving wheel is powered by solar energy. When in use, the sand mill can be moved by operating the control end, and a shock absorbing device is provided in the sand mill device to avoid the shaking of the walking device during use.

[0004] However, the sand mill in the above-mentioned prior art is of horizontal structure and has a large size, which is inconvenient to carry, thus affecting its flexibility and convenience in use; therefore, it does not meet the existing needs, and we propose a portable sand mill with an auxiliary structure. Summary of the invention

[0005] The purpose of the present invention is to provide a portable sand grinder with an auxiliary structure to solve the problem that the sand grinder in the prior art proposed in the above background technology is of horizontal structure and large in size, which is inconvenient to carry, thus affecting its flexibility and convenience in use.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a portable sand grinder with an auxiliary structure, comprising a mounting tray, a dustproof cover is arranged above the mounting tray, a first mounting seat is arranged above the dustproof cover, a sand storage bin is installed inside the first mounting seat, the sand storage bin is threadedly connected to the inside of the first mounting seat, a support plate is arranged above the sand storage bin, a second mounting seat is arranged on one side of the dustproof cover, a handle bar is arranged inside the second mounting seat, the handle bar is threadedly connected to the inside of the second mounting seat, grooves are arranged on the upper and lower end faces of the handle bar, an anti-slip head is installed on one end face of the handle bar, a dust suction pipe is arranged at the rear end of the dustproof cover, and a drive seat is arranged on one side of the sand storage bin.

[0007] Preferably, a first connecting seat is provided on one end surface of the driving seat, a power storage seat is installed on the other end surface of the driving seat, a power interface is provided on the rear end surface of the driving seat, and an opening and closing cover is installed on the power interface.

[0008] Preferably, a switch is provided on one side of the upper surface of the driving seat, a speed regulating knob is provided on one side of the switch, and a lever is provided at the rear end of the surface of the speed regulating knob.

[0009] Preferably, a protective frame is provided on one side of the switch, a rotation groove is provided on one side of the upper surface of the protective frame, an anti-touch plate is installed inside the rotation groove, and the anti-touch plate is rotatably connected to the top of the protective frame through the rotation groove.

[0010] Preferably, a second connecting seat is provided on one end surface of the dust suction tube, an opening and closing plate is provided on the upper surface of the dust suction tube, a dust exhaust interface is provided on the other end surface of the dust suction tube, and a sealing cover is installed on one end surface of the dust exhaust interface.

[0011] Preferably, a baffle is provided inside the dust suction pipe, and an air pipe is installed on one side of the baffle.

[0012] Preferably, a dust bag is arranged on the other side of the baffle, a support frame is arranged on the surface of the dust bag, and a plurality of support frames are arranged.

[0013] Preferably, fixing screws are installed on both sides of the upper surface of the mounting tray, and a handle is installed on the upper surface of the support plate.

[0014] Preferably, limit seats are provided around the lower surface of the support plate and around the upper surface of the dustproof sleeve, and connecting rods are installed between the limit seats, and the upper and lower ends of the connecting rods are connected to the inner threads of the limit seats.

[0015] Preferably, a sponge pad is installed on the lower surface of the mounting tray, a sanding disc is arranged inside the mounting tray, and dust suction grooves are arranged around the sanding disc and between the mounting tray.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a handle bar on one side end face of the dustproof sleeve, and the handle bar is connected and fixed with the dustproof sleeve by a second mounting seat. When operating, the switch can be turned on and the handle bar can be held for operation. The internal motor drives the rotor, and the rotor drives the grinding medium to rotate at high speed, so that collision and friction are generated between the material in the barrel and the grinding medium, so as to achieve the effect of grinding the material. At the same time, the support plate is threadedly connected with the limit seat at the bottom of the support plate through the connecting rod, and the other end is threadedly connected with the limit seat on the dustproof sleeve, so that the handle on the support plate can be used for grasping during operation, thereby increasing the way of using the support plate. At the same time, the whole device is composed of an installation tray, a dustproof sleeve, a sand storage bin and a support plate. The handle bar and the dust suction pipe are arranged on the surface of the dustproof sleeve, and the driving seat is arranged on the surface of the sand storage bin, so that the overall device has a small volume, can be directly handheld for use, is simple to operate, and is easy to carry and use. It has a simple structure and is easy to operate, and is suitable for processing operations in various environments, and solves the problem that the sand mill in the prior art is a horizontal structure and has a large volume, which is inconvenient to carry, thereby affecting its flexibility and convenience of use.

[0018] 2. A vacuum tube is provided with an air pipe and a dust bag inside, and an opening and closing plate and a dust exhaust interface outside. The dust and powder generated during the grinding process are sucked into the vacuum tube by the principle of negative pressure, and can be discharged through the dust exhaust interface to connect the pipe, thereby achieving the effect of cleaning the working area. The vacuum tube is made of PVC material, which has good high temperature resistance, acid and alkali resistance, corrosion resistance and other properties. Its structure is usually multi-layered, with inner and outer layers of PVC, and steel wire or spiral steel wire is added in the middle to increase its pressure resistance and wear resistance. When it is inconvenient to connect to the external pipeline, the dust bag can be used for collection and unified treatment. When vacuuming, the dust suction groove at the bottom of the mounting tray is used for adsorption. The dust suction groove is located around the sanding disc, and a sponge pad is installed on the lower surface of the mounting tray to avoid dust overflow during vacuuming.

[0019] 3. By arranging a power interface and a power storage seat on the outside of the driving seat, it can be powered on by a power cord and can also be powered by the power storage seat to ensure its flexibility of use. At the same time, an anti-touch plate is arranged on the protective frame arranged on one side of the switch. The anti-touch plate is rotatably connected to the protective frame by a rotating groove, so that the anti-touch plate can be located on the top of the switch to prevent accidental touch during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the portable sand mill of the present invention;

[0021] Figure 2It is a schematic diagram of the back structure of the portable sand grinder of the present invention;

[0022] Figure 3 It is a schematic diagram of the bottom structure of the portable sand mill of the present invention;

[0023] Figure 4 It is an enlarged schematic diagram of the drive seat structure of the present invention;

[0024] Figure 5 It is an enlarged schematic diagram of the local structure inside the dust suction tube of the present invention;

[0025] In the figure: 1. Mounting tray; 2. Dust cover; 3. First mounting seat; 4. Sand storage bin; 5. Support plate; 6. Connecting rod; 7. Limiting seat; 8. Handle; 9. Second mounting seat; 10. Handle bar; 11. Anti-slip head; 12. Drive seat; 13. Power interface; 14. Dust suction pipe; 15. Sanding disc; 16. Dust suction slot; 17. Sponge pad; 18. First connecting seat; 19. Switch; 20. Protective frame; 21. Rotating slot; 22. Anti-touch plate; 23. Speed ​​control knob; 24. Dial lever; 25. Power storage seat; 26. Second connecting seat; 27. Dust exhaust interface; 28. Sealing cover; 29. ​​Air pipe; 30. Baffle; 31. Dust bag; 32. Support frame; 33. Opening and closing plate; 34. Fixing screws. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-5, an embodiment of the present invention: a portable sand mill with an auxiliary structure, comprising a mounting tray 1, a dustproof cover 2 is arranged above the mounting tray 1, a first mounting seat 3 is arranged above the dustproof cover 2, a sand storage bin 4 is arranged inside the first mounting seat 3, the sand storage bin 4 is connected with the first mounting seat 3 internally by threads, a support plate 5 is arranged above the sand storage bin 4, a second mounting seat 9 is arranged on one side of the dustproof cover 2, a handle bar 10 is arranged inside the second mounting seat 9, the handle bar 10 is connected with the second mounting seat 9 internally by threads, the upper and lower end surfaces of the handle bar 10 are both provided with grooves, an anti-slip head 11 is installed on one end surface of the handle bar 10, a dust suction pipe 14 is arranged at the rear end of the dustproof cover 2, a driving seat 12 is arranged on one side of the sand storage bin 4, when in use, by A handle bar 10 is arranged on one end face of the dust cover 2, and the handle bar 10 is connected and fixed with the dust cover 2 by means of a second mounting seat 9. When operating, the switch 19 is turned on and the handle bar 10 is held by hand to operate. The internal motor is used to drive the rotor, and the rotor drives the grinding medium to rotate at a high speed, so that collision and friction are generated between the material in the barrel and the grinding medium, so as to achieve the effect of grinding the material. At the same time, the support plate 5 is threadedly connected with the limit seat 7 at the bottom thereof through the connecting rod 6, and the other end is threadedly connected with the limit seat 7 on the dust cover 2, so that the handle 8 on the support plate 5 can be used for grasping and use during operation, thereby increasing the way of using it. At the same time, the whole device is composed of an installation tray 1, a dust cover 2, a sand storage bin 4 and a support plate 5, and the handle bar 10 and the dust suction pipe 14 are arranged The surface of the dustproof cover 2 and the driving seat 12 are arranged on the surface of the sand storage bin 4, so that the overall device is small in size and can be directly used by hand, which is simple to operate, easy to carry and use. It has a simple structure and is easy to operate, suitable for processing operations in various environments, and solves the problem that the sand mill in the prior art is a horizontal structure and has a large size, which is inconvenient to carry, thus affecting its flexibility and convenience in use. By setting a dust suction pipe 14, an air pipe 29 and a dust collecting bag 31 are arranged inside the dust suction pipe 14, and an opening and closing plate 33 and a dust exhaust interface 27 are arranged outside. The dust, powder, etc. generated during the grinding process are sucked into the dust suction pipe 14 by the principle of negative pressure, and can be discharged through the dust exhaust interface 27 to connect the pipeline, thereby achieving the effect of cleaning the working area. The dust suction tube 14 is made of PVC material, which has good high temperature resistance, acid and alkali resistance, corrosion resistance and other properties. Its structure is usually multi-layered, with the inner and outer layers being PVC, and steel wire or spiral steel wire reinforcement being added in the middle to increase its pressure resistance and wear resistance. When it is inconvenient to connect to the external pipeline, the dust bag 31 can be used to store and then be processed uniformly. When vacuuming, the dust suction groove 16 at the bottom of the mounting tray 1 is used for adsorption. The dust suction groove 16 is located around the sanding disc 15, and a sponge pad 17 is installed on the lower surface of the mounting tray 1 to avoid dust overflow during vacuuming. By arranging a power interface 13 and a power storage seat 25 on the outside of the driving seat 12, it can be powered on by a power cord and can also be powered by the power storage seat 25 to ensure its flexibility of use.At the same time, an anti-touch plate 22 is provided on the protective frame 20 provided on one side of the switch 19. The anti-touch plate 22 is rotatably connected to the protective frame 20 by means of a rotation groove 21, so that the anti-touch plate 22 can be located at the top of the switch 19, and plays a role in preventing accidental touch during operation.

[0028] See also Figure 1-Figure 5 A first connecting seat 18 is disposed on one end surface of the driving seat 12, a power storage seat 25 is installed on the other end surface of the driving seat 12, a power interface 13 is disposed on the rear end surface of the driving seat 12, and an opening and closing cover is installed on the power interface 13.

[0029] See also Figure 1-Figure 5 A switch 19 is provided on one side of the upper surface of the driving seat 12, a speed knob 23 is provided on one side of the switch 19, and a lever 24 is provided on the rear end of the speed knob 23. When operating, the switch 19 can be turned on and the handle 10 can be operated. The rotor is driven by the internal motor, and the rotor drives the grinding medium to rotate at a high speed, so that the material in the cylinder and the grinding medium collide and rub, so as to achieve the effect of grinding the material. At the same time, the support plate 5 is threadedly connected to the limit seat 7 at the bottom thereof through the connecting rod 6, and the other end is threadedly connected to the limit seat 7 on the dust cover 2, so that the handle on the support plate 5 can be used for operation. 8 is used for grasping, which increases the way of using it. At the same time, the whole device is composed of an installation tray 1, a dust cover 2, a sand storage bin 4 and a support plate 5. The handle 10 and the dust suction pipe 14 are arranged on the surface of the dust cover 2, and the drive seat 12 is arranged on the surface of the sand storage bin 4, so that the overall device is small in size and can be directly held in hand for use. The operation is simple, and it is easy to carry and use. Its structure is simple and easy to operate. It is suitable for processing operations in various environments, which solves the problem that the sand mill in the prior art is a horizontal structure and a large size, which is inconvenient to carry, thereby affecting its flexibility and convenience in use.

[0030] See also Figure 1-Figure 5 A protective frame 20 is provided on one side of the switch 19, and a rotating groove 21 is provided on one side of the upper surface of the protective frame 20. An anti-touch plate 22 is installed inside the rotating groove 21. The anti-touch plate 22 is rotatably connected to the top of the protective frame 20 through the rotating groove 21, so that the anti-touch plate 22 can be located on the top of the switch 19, which plays a role in preventing accidental touch during operation.

[0031] See also Figure 1-Figure 5, a second connecting seat 26 is provided on one end face of the dust suction pipe 14, an opening and closing plate 33 is provided on the upper surface of the dust suction pipe 14, and a dust discharge interface 27 is provided on the other end face of the dust suction pipe 14. A sealing cover 28 is installed on one end face of the dust discharge interface 27. The dust suction pipe 14 uses the negative pressure principle to suck dust, powder, etc. generated during the grinding process into the dust suction pipe 14, and can be connected to the dust discharge interface 27 to discharge the dust, thereby achieving the effect of cleaning the working area. The dust suction pipe 14 is made of PVC material, which has good high temperature resistance, acid and alkali resistance, corrosion resistance and other properties. Its structure is usually multi-layer, with inner and outer layers of PVC, and steel wire or spiral steel wire is added in the middle to increase its pressure resistance and wear resistance. When it is inconvenient to connect to an external pipeline, the dust collecting bag 31 can be used for storage and unified treatment. When vacuuming, the dust suction groove 16 at the bottom of the mounting tray 1 is used for adsorption. The dust suction groove 16 is located around the sanding disc 15, and a sponge pad 17 is installed on the lower surface of the mounting tray 1 to avoid dust overflow during vacuuming.

[0032] See also Figure 1-Figure 5 A baffle plate 30 is disposed inside the dust suction pipe 14 , and an air pipe 29 is installed on one side of the baffle plate 30 .

[0033] See also Figure 1-Figure 5 A dust bag 31 is disposed on the other side of the baffle 30 , and a support frame 32 is disposed on the surface of the dust bag 31 , and a plurality of support frames 32 are disposed.

[0034] See also Figure 1-Figure 5 Fixing screws 34 are installed on both sides of the upper surface of the mounting tray 1, and a handle 8 is installed on the upper surface of the supporting plate 5.

[0035] See also Figure 1-Figure 5 Limiting seats 7 are arranged around the lower surface of the support plate 5 and around the upper surface of the dustproof cover 2. Connecting rods 6 are installed between the limiting seats 7. The upper and lower ends of the connecting rods 6 are connected to the inner threads of the limiting seats 7.

[0036] See also Figure 1-Figure 5, a sponge pad 17 is installed on the lower surface of the mounting tray 1, a sanding disc 15 is arranged inside the mounting tray 1, and dust suction grooves 16 are arranged around the sanding disc 15 and between the mounting tray 1, and the dust suction pipe 14 uses the negative pressure principle to suck the dust, powder, etc. generated during the grinding process into the dust suction pipe 14, and can be connected to the pipe through the dust exhaust interface 27 to discharge, so as to achieve the effect of cleaning the working area, the dust suction pipe 14 is made of PVC material, which has good high temperature resistance, acid and alkali resistance, corrosion resistance and other properties, and its structure is usually multi-layered, with the inner and outer layers of PVC, and steel wire or spiral steel wire is added in the middle to increase its pressure resistance and wear resistance. When it is inconvenient to connect the external pipeline, the dust collecting bag 31 can be used for storage and unified treatment, and the dust suction groove 16 at the bottom of the mounting tray 1 is used for adsorption during dust suction, and the dust suction groove 16 is located around the sanding disc 15, and a sponge pad 17 is installed on the lower surface of the mounting tray 1 to avoid the overflow of dust during dust suction.

[0037] Working principle: When in use, since a handle bar 10 is arranged on one side end face of the dust cover 2, the handle bar 10 is connected and fixed to the dust cover 2 by means of a second mounting seat 9, the switch 19 is turned on and the handle bar 10 is held for operation, and the rotor is driven by the internal motor, and the rotor drives the grinding medium to rotate at a high speed, so that collision and friction are generated between the material in the barrel and the grinding medium, so as to achieve the effect of grinding the material, and at the same time, the support plate 5 is threadedly connected to the limit seat 7 at its bottom through the connecting rod 6, and the other end is threadedly connected to the limit seat 7 on the dust cover 2, so that the handle 8 on the support plate 5 can be used for grasping during operation, thereby increasing its usability. The whole device is composed of an installation tray 1, a dust cover 2, a sand storage bin 4 and a support plate 5. The handle 10 and the dust suction pipe 14 are arranged on the surface of the dust cover 2, and the drive seat 12 is arranged on the surface of the sand storage bin 4, so that the overall device is small in size and can be directly handheld for use. The operation is simple, easy to carry and use. The structure is simple and the operation is convenient. It is suitable for processing operations in various environments. The problem that the sand mill in the prior art is a horizontal structure and a large volume is solved, which is inconvenient to carry, thereby affecting its flexibility and convenience in use. By arranging the dust suction pipe 14, an air pipe is arranged inside the dust suction pipe 14. 29 and dust bag 31, an opening and closing plate 33 and a dust exhaust interface 27 are arranged on the outside, which uses the negative pressure principle to suck the dust, powder, etc. generated during the grinding process into the dust suction pipe 14, and can be discharged through the dust exhaust interface 27 to connect the pipeline, so as to achieve the effect of cleaning the working area. The dust suction pipe 14 is made of PVC material, which has good high temperature resistance, acid and alkali resistance, corrosion resistance and other properties. Its structure is usually multi-layered, with the inner and outer layers of PVC, and steel wire or spiral steel wire is added in the middle to increase its pressure resistance and wear resistance. When it is inconvenient to connect the external pipeline, the dust bag 31 can be used for storage and unified treatment, and the installation tray can be used when vacuuming. 1 is adsorbed by the dust suction groove 16 at the bottom, which is located around the sanding disc 15, and a sponge pad 17 is installed on the lower surface of the mounting tray 1 to avoid dust overflow during dust collection. By arranging the power interface 13 and the power storage seat 25 outside the driving seat 12, it can be powered on by the power cord and can also be powered by the power storage seat 25 to ensure its flexibility of use. At the same time, an anti-touch plate 22 is arranged on the protective frame 20 arranged on one side of the switch 19. The anti-touch plate 22 is rotatably connected to the protective frame 20 by the rotating groove 21, so that the anti-touch plate 22 can be located on the top of the switch 19 to prevent accidental touch during operation.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A portable sand grinder with auxiliary structure, comprising a mounting tray (1), characterized in that: A dustproof sleeve (2) is arranged above the mounting tray (1), a first mounting seat (3) is arranged above the dustproof sleeve (2), a sand storage bin (4) is arranged inside the first mounting seat (3), the sand storage bin (4) is connected to the first mounting seat (3) by internal threads, a support plate (5) is arranged above the sand storage bin (4), a second mounting seat (9) is arranged on one side of the dustproof sleeve (2), a handle bar (10) is arranged inside the second mounting seat (9), the handle bar (10) is connected to the second mounting seat (9) by internal threads, the upper and lower end surfaces of the handle bar (10) are both provided with grooves, an anti-slip head (11) is installed on one end surface of the handle bar (10), a dust suction pipe (14) is arranged at the rear end of the dustproof sleeve (2), and a driving seat (12) is arranged on one side of the sand storage bin (4).

2. A portable sand mill with an auxiliary structure according to claim 1, characterized in that: A first connection seat (18) is arranged on one end surface of the drive seat (12), a power storage seat (25) is installed on the other end surface of the drive seat (12), a power interface (13) is arranged on the rear end surface of the drive seat (12), and an opening and closing cover is installed on the power interface (13).

3. A portable sand grinder with an auxiliary structure according to claim 2, characterized in that: A switch (19) is provided on one side of the upper surface of the driving seat (12), a speed regulating button (23) is provided on one side of the switch (19), and a lever (24) is provided at the rear end of the surface of the speed regulating button (23).

4. The portable sand grinder with auxiliary structure according to claim 3, characterized in that: A protective frame (20) is provided on one side of the switch (19), a rotation groove (21) is provided on one side of the upper surface of the protective frame (20), an anti-touch plate (22) is installed inside the rotation groove (21), and the anti-touch plate (22) is rotatably connected to the top of the protective frame (20) through the rotation groove (21).

5. The portable sand mill with auxiliary structure according to claim 4, characterized in that: A second connecting seat (26) is provided on one end surface of the dust suction pipe (14), an opening and closing plate (33) is provided on the upper surface of the dust suction pipe (14), a dust exhaust interface (27) is provided on the other end surface of the dust suction pipe (14), and a sealing cover (28) is installed on one end surface of the dust exhaust interface (27).

6. The portable sand mill with auxiliary structure according to claim 5, characterized in that: A baffle (30) is provided inside the dust suction pipe (14), and an air pipe (29) is installed on one side of the baffle (30).

7. The portable sand mill with auxiliary structure according to claim 6, characterized in that: A dust collecting bag (31) is arranged on the other side of the baffle (30), and a support frame (32) is arranged on the surface of the dust collecting bag (31), and a plurality of the support frames (32) are arranged.

8. The portable sand grinder with auxiliary structure according to claim 7, characterized in that: Fixing screws (34) are installed on both sides of the upper surface of the installation tray (1), and a handle (8) is installed on the upper surface of the support plate (5).

9. The portable sand grinder with auxiliary structure according to claim 8, characterized in that: Limiting seats (7) are arranged around the lower surface of the support plate (5) and around the upper surface of the dustproof sleeve (2), and connecting rods (6) are installed between the limiting seats (7). The upper and lower ends of the connecting rods (6) are connected to the inner threads of the limiting seats (7).

10. The portable sand grinder with auxiliary structure according to claim 9, characterized in that: A sponge pad (17) is installed on the lower surface of the installation tray (1), a sanding disc (15) is arranged inside the installation tray (1), and dust suction grooves (16) are arranged around the sanding disc (15) and between the installation tray (1).

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