Electric grinding device for automobile maintenance

Abstract

The utility model discloses an electric polishing device for automobile maintenance, which comprises a round box, a round rotating seat is movably sleeved on the inner side of the round box, and four fan-shaped through holes are annularly formed in the top of the round rotating seat at equal intervals; the number of the filter screens is four, and the filter screens are fixedly installed in the corresponding fan-shaped through holes respectively. By arranging a series of structures, dust generated at the grinding position can be conveniently sucked, filtered and collected during grinding, the four filter screens can be conveniently driven to rotate during grinding and automatically recycled and subjected to back flushing, cleaning and dredging, the effect of synchronously conducting dust collection and dredging work is achieved, the continuous and smooth effect of dust collection work is guaranteed, and the working efficiency is improved. And during use, dust can be integrally and automatically guided and discharged outwards, water is used for adsorbing the dust, workers do not need to independently move out and clean the filter screen and dust residues in the follow-up process, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically an electric grinding device for automobile repair. Background Technology

[0002] Automotive repair is a general term for car maintenance and repair. During the driving process, scratches may occur, damaging the car's paint. In cases of severe deformation, bodywork repair is required first, followed by repainting the car's exterior. Before repainting, a sanding device is needed to sand the old paint surface. Existing electric sanding tools use a motor to drive sanding discs to sand the car's surface, but this process generates a lot of dust, which can harm people's health.

[0003] According to the new structure search report, announcement number CN214265097U discloses a grinding device for automotive sheet metal repair, including a grinding disc. A mounting base is provided above the grinding disc, and a rectangular hole is opened on the top front side of the mounting base. A drive motor is embedded in the inner wall of the top of the rectangular hole. A rotating shaft is fixedly connected to the bottom end of the output shaft of the drive motor, and the bottom end of the rotating shaft extends to the bottom of the mounting base and is fixedly installed with the top of the grinding disc. An arc-shaped handle is fixedly connected to the top of the mounting base. A dust collection and filtration mechanism is provided on the mounting base. The dust collection and filtration mechanism includes a frustum-shaped cover fixedly connected to the bottom of the mounting base, and the grinding disc is located inside the frustum-shaped cover. This facilitates automatic absorption, filtration, and centralized collection of dust during grinding, and allows for quick removal and cleaning of the collected dust, effectively preventing large amounts of dust from drifting outwards, reducing environmental pollution and worker hazards, meeting usage requirements, and being beneficial to use.

[0004] The aforementioned technology discloses a grinding device for automotive sheet metal repair. This device integrates suction at the grinding position while the grinding disc rotates, and integrates a filter and dust collection box to filter and collect dust, reducing the direct and large-scale emission of dust that could harm personnel. However, it has the following shortcomings: 1. As dust is drawn in, it easily accumulates and blocks the filter surface under suction, making it difficult to automatically clear the filter during cleaning and ensuring stable and continuous dust removal; 2. After use, personnel need to manually remove the filter for cleaning and dust removal, lacking an integrated automatic discharge mechanism. Therefore, this application proposes an electric grinding device for automotive repair to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an electric grinding device for automobile repair, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric grinding device for automobile repair, comprising:

[0007] A round box, with a circular rotating seat movably fitted inside it, and four fan-shaped through holes evenly spaced in a ring on the top of the circular rotating seat;

[0008] The filter screen consists of four parts, each fixedly installed in a corresponding fan-shaped through hole;

[0009] The drive motor is fixedly installed on the top of the round box and its output shaft is fixedly connected to the center of the top of the round rotating base; the drive motor is used to drive the round rotating base to rotate, and the round rotating base drives the four fan-shaped through holes and four filter screens to rotate.

[0010] The rotating shaft is fixedly connected to the center of the bottom of the circular rotating base;

[0011] The grinding disc is fixedly connected to the bottom of the rotating shaft; the rotating shaft is used to drive the grinding disc to rotate when the rotary base rotates to perform the grinding work on the automotive panel surface to be sprayed with paint.

[0012] The suction and back-blowing unblocking component is fixedly installed at the bottom of the round box and connected to the fan-shaped through holes on the left and right sides. The suction and back-blowing unblocking component is used to continuously suction into the fan-shaped through hole on the left side and blow air upward into the fan-shaped through hole on the right side. The four fan-shaped through holes and four filter screens rotate to form a sequential cycle of suction and back-blowing to clean and unblock the four filter screens.

[0013] The encircling suction assembly is rotatably sleeved on the outside of the rotating shaft and connected to the upper part of the fan-shaped through hole on the left side; the encircling suction assembly is used to surround and suck up the dust in the grinding position when it is sucked up in the fan-shaped through hole on the left side, and uses the filter screen on the left side to filter and block the sucked dust in the fan-shaped through hole on the left side.

[0014] The L-shaped handle tube is embedded and fixed on the top right side of the round box and connected to the upper part of the fan-shaped through hole on the right side.

[0015] The dust removal water adsorption purification component is connected and fixed to the right end of the L-shaped handle tube. The dust removal water adsorption purification component is used to work with the L-shaped handle tube to guide dust outward and use water to adsorb dust in the gas when the filter screen on the right side is back-blown and cleaned.

[0016] Preferably, the suction backflushing unblocking assembly includes a connecting pipe fixedly installed at the bottom of the round box, the rotating shaft being located inside the connecting pipe, an air pump with an air inlet vertically aligned and connected to the fan-shaped through hole on the left side of the bottom of the round box being fixedly installed, the air outlet of the air pump being fixedly connected to the left side of the inside of the connecting pipe, an L-shaped pipe being fixedly connected to the right side of the connecting pipe, a fixing box embedded and fixedly installed at the top of the L-shaped pipe, and a plurality of backflushing pipe heads, each vertically aligned and connected to the fan-shaped through hole on the right side, being fixedly connected to the top of the fixing box.

[0017] Preferably, the enveloping suction assembly includes a hollow disc rotatably sleeved on the outside of the rotating shaft. The top left side of the hollow disc is connected to the top left side of the round box and is fixed with the same U-shaped tube. One end of the U-shaped tube is vertically aligned and connected to the upper part of the fan-shaped through hole on the left side. Multiple dust suction hoods are connected and fixed in an annular shape at equal intervals at the bottom of the hollow disc. The grinding disc is located between the multiple dust suction hoods. The top of the hollow disc is fixedly connected to the bottom of the connecting tube.

[0018] Preferably, the dust removal water adsorption and purification component includes a water tank filled with water, and a flexible hose is fixedly installed on the left inner wall of the water tank, with the top end of the flexible hose connected and fixed to the right end of the L-shaped handle tube.

[0019] Preferably, the inner diameter of the air inlet of the air pump is larger than the distance between two adjacent fan-shaped through holes.

[0020] Preferably, the round box consists of a cylindrical box body with an opening at the top and a cover plate fixed to the top of the cylindrical box body. The top of the cover plate has a first movable through hole for the output shaft of the drive motor to pass through. The bottom of the cover plate and the bottom inner wall of the cylindrical box body are in sliding contact with the top and bottom of the round rotating seat, respectively.

[0021] Preferably, the top of the hollow disk has a circular through hole, and a bearing is fixedly fitted inside the circular through hole. The inner ring of the bearing is fixedly fitted to the outer side of the rotating shaft. The bottom of the hollow disk has a circular movable through hole for the rotating shaft to move through.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. Through the coordinated design of the drive motor, round box, round rotating base, fan-shaped through hole, filter screen, rotating shaft, grinding disc, suction and back-blowing unblocking components, and surrounding suction components, it can suck up, filter and collect the dust generated at the grinding position during grinding; and it can drive the four filter screens to rotate during grinding and automatically circulate and back-blown clean and unblock them, achieving the effect of simultaneous dust collection and unblocking. By using the synchronous operation and the rotation and recycling of the four filter screens, it ensures the continuous smooth effect of dust collection, avoiding the phenomenon of traditional fixed filter screens being blocked by dust and impurities, which leads to air blockage and affects the stable operation of dust collection, thus improving the long-term continuous stability of dust collection.

[0024] 2. With the combination of the round box, dust removal water adsorption purification component and L-shaped handle tube, the dust can be automatically guided outward by the blowing force and the dust can be adsorbed by water during use, so as to prevent the dust from being discharged into the environment again. The integrated system realizes back-blowing cleaning and dust removal adsorption purification. Afterwards, there is no need for personnel to remove and clean the filter screen and dust, which improves the convenience of use.

[0025] This utility model features a series of structures that facilitate the suction, filtration, and collection of dust generated during grinding. It also allows for the automatic rotation and backflushing of four filters during grinding, enabling simultaneous dust collection and cleaning. This ensures continuous and smooth dust collection, improves long-term stability, and automatically guides dust outwards and uses water to absorb it, eliminating the need for manual removal and cleaning of filters and dust, thus enhancing ease of use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an electric grinding device for automobile repair proposed in this utility model;

[0027] Figure 2 This is a partial bottom view of the structure of an electric grinding device for automobile repair proposed in this utility model.

[0028] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure;

[0029] Figure 4 This is a schematic diagram of the structure of the rotary base and filter screen connector of an electric grinding device for automobile repair proposed in this utility model.

[0030] In the diagram: 1. Round box; 101. Air pump; 102. Connecting pipe; 2. Round rotating base; 201. Fan-shaped through hole; 202. Filter screen; 203. U-shaped tube; 3. Drive motor; 4. Hollow disc; 401. Dust hood; 5. Rotary shaft; 501. Grinding disc; 6. L-shaped tube; 601. Fixing box; 602. Backflush nozzle; 7. L-shaped handle tube; 701. Flexible hose; 702. Water bucket. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1 to 4 As shown in this embodiment, an electric grinding device for automobile repair includes:

[0033] A round box 1, with a round rotating seat 2 movably fitted inside it, and four fan-shaped through holes 201 are opened in a ring at equal intervals on the top of the round rotating seat 2;

[0034] The filter screen 202 consists of four screens, each of which is fixedly installed in a corresponding fan-shaped through hole 201.

[0035] The drive motor 3 is fixedly installed on the top of the round box 1 and its output shaft is fixedly connected to the top center of the round rotating base 2; the drive motor 3 is used to drive the round rotating base 2 to rotate, and the round rotating base 2 drives the four fan-shaped through holes 201 and the four filter screens 202 to rotate.

[0036] The rotating shaft 5 is fixedly connected to the center of the bottom of the circular rotating base 2;

[0037] The grinding disc 501 is fixedly connected to the bottom end of the rotating shaft 5; the rotating shaft 5 is used to drive the grinding disc 501 to rotate and perform grinding work on the car panel surface to be sprayed and adsorbed when the circular rotating base 2 rotates.

[0038] The suction and back-blowing unblocking component is fixedly installed at the bottom of the round box 1 and connected to the fan-shaped through holes 201 on the left and right sides. The suction and back-blowing unblocking component is used to continuously suction into the fan-shaped through hole 201 on the left side and blow air upward into the fan-shaped through hole 201 on the right side. The rotation of the four fan-shaped through holes 201 and the four filter screens 202 forms a sequential cycle of suction and back-blowing to clean and unblock the four filter screens 202.

[0039] The encircling suction assembly is rotatably sleeved on the outside of the rotating shaft 5 and connected to the upper part of the fan-shaped through hole 201 on the left side; the encircling suction assembly is used to surround and suck up the dust in the grinding position when being sucked in the fan-shaped through hole 201 on the left side, and uses the filter screen 202 on the left side to filter and block the sucked dust in the fan-shaped through hole 201 on the left side.

[0040] The L-shaped handle tube 7 is embedded and fixed on the top right side of the round box 1 and connected to the upper part of the fan-shaped through hole 201 on the right side.

[0041] The dust removal water adsorption purification component is connected and fixed to the right end of the L-shaped handle tube 7; the dust removal water adsorption purification component is used to cooperate with the L-shaped handle tube 7 to guide the dust outward when the filter screen 202 on the right side is back-blown and cleaned, and to use water to adsorb the dust in the gas.

[0042] Specifically, the suction and backflushing unblocking assembly includes a connecting pipe 102 fixedly installed at the bottom of the circular box 1, a rotating shaft 5 located inside the connecting pipe 102, an air pump 101 with its air inlet vertically aligned and connected to the fan-shaped through hole 201 on the left side of the bottom of the circular box 1, an air outlet of the air pump 101 fixedly connected to the left side of the interior of the connecting pipe 102, an L-shaped pipe 6 fixedly connected to the right side of the connecting pipe 102, a fixing box 601 embedded and fixedly installed at the top of the L-shaped pipe 6, and multiple backflushing pipe heads 602, each vertically aligned and connected to the fan-shaped through hole 201 on the right side, fixedly installed at the top of the fixing box 601; the connecting pipe 102, air pump 101, L-shaped pipe 6, fixing box 601, and backflushing pipe heads 602 work together to utilize the air pump 101 when it is started. The air inlet continuously draws air into the fan-shaped through-hole 201 on the left side and supplies gas into the connecting pipe 102. The gas then enters the fixed box 601 through the L-shaped pipe 6, and is blown upward through multiple back-blowing nozzles 602. This back-blowing cleans and unblocks the filter screen 202 and the fan-shaped through-hole 201 on the right side. With the rotation of the four fan-shaped through-holes 201 and the four filters 202, a sequential cycle of suction and back-blowing cleans and unblocks the four filters 202 is formed, achieving the effect of simultaneous dust collection and unblocking. By using the simultaneous operation and the rotation and recycling of the four filters 202, the continuous smooth effect of dust collection is ensured, avoiding the phenomenon of traditional fixed filters being blocked by dust and impurities, which would cause air blockage and affect the stable operation of dust collection, thus improving the long-term continuous stability of dust collection.

[0043] Furthermore, the enveloping suction assembly includes a hollow disc 4 rotatably sleeved on the outside of the rotating shaft 5. The top left side of the hollow disc 4 is connected to the top left side of the circular box 1, and a U-shaped tube 203 is fixed thereon. One end of the U-shaped tube 203 is vertically aligned and connected to the upper part of the fan-shaped through hole 201 on the left side. Multiple suction hoods 401 are fixedly connected in a ring at equal intervals at the bottom of the hollow disc 4. A polishing disc 501 is located between the multiple suction hoods 401. The top of the hollow disc 4 is fixedly connected to the bottom of the connecting pipe 102. The hollow disc 4, the dust hood 401, and the U-shaped tube 203 work together to draw in the fan-shaped through hole 201 on the left side. When the dust is drawn in, it is drawn in sequence through the U-shaped tube 203, the hollow disc 4, and the multiple dust hoods 401 to surround and draw in the dust and gas generated at the grinding position. This allows the dust and gas to be drawn into the fan-shaped through hole 201 on the left side, and then filtered and blocked by the filter screen 202 on the left side, reducing the phenomenon of dust from the grinding position directly and in large quantities drifting outward and harming the health of personnel.

[0044] Furthermore, the dust removal water adsorption purification component includes a water tank 702 filled with water. A flexible hose 701 is fixedly installed on the inner left side of the water tank 702, and the top end of the flexible hose 701 is connected and fixed to the right end of the L-shaped handle tube 7. When the water tank 702 and the flexible hose 701 work together, and the filter screen 202 and the fan-shaped through hole 201 on the right side are cleaned and unblocked by backflushing, the dust blown up by the continuous blowing force enters the L-shaped handle tube 7 and is then discharged into the water in the water tank 702 through the flexible hose 701. The gas generates bubbles in the water and disperses upwards, while the dust is directly immersed in the water and adsorbed. This achieves the effect of guiding the dust outward and using water to adsorb the dust when the filter screen 202 on the right side is cleaned and unblocked by backflushing, thus preventing the dust from being discharged back into the environment. The integrated backflushing cleaning and dust removal adsorption purification method eliminates the need for personnel to remove and clean the filter screen 202 and dust separately, improving ease of use.

[0045] Furthermore, the inner diameter of the air inlet of the air pump 101 is larger than the distance between the two adjacent fan-shaped through holes 201, which prevents the air inlet of the air pump 101 from being completely blocked when the rotary seat 2 rotates, and achieves the effect of effectively connecting the two adjacent fan-shaped through holes 201 with the air inlet of the air pump 101 when they rotate.

[0046] Furthermore, the round box 1 consists of a cylindrical box body with an open top and a cover plate fixed to the top of the cylindrical box body. The top of the cover plate has a first movable through hole for the output shaft of the drive motor 3 to pass through. The bottom of the cover plate and the bottom inner wall of the cylindrical box body slide in contact with the top and bottom of the round rotating seat 2, respectively. The bottom inner wall of the cylindrical box body also has a reserved hole for the rotating shaft 5 to pass through vertically.

[0047] Furthermore, the top of the hollow disk 4 has a circular through hole, and a bearing is fixedly fitted inside the circular through hole. The inner ring of the bearing is fixedly fitted to the outer side of the rotating shaft 5. The bottom of the hollow disk 4 has a circular movable through hole for the rotating shaft 5 to move through. The bearing is provided to enable the rotating shaft 5 to rotate.

[0048] The power supply for the drive motor 3 and the air pump 101 is provided by connecting the motor's own power cord or power adapter to the local mains socket.

[0049] The usage method of this embodiment is as follows: When using the electric polishing device for automobile repair, start the drive motor 3 and the air pump 101. The drive motor 3 drives the rotary seat 2 to rotate. The rotary seat 2 drives the polishing disc 501 to rotate via the rotating shaft 5 to polish the automobile surface. When the rotary seat 2 rotates, it also drives the four fan-shaped through holes 201 and the four filter screens 202 to rotate. When the air pump 101 is started, its air inlet always draws air into the fan-shaped through hole 201 on the left side and supplies the air into the connecting pipe 102. When the air is drawn into the fan-shaped through hole 201 on the left side, it sequentially passes through the U-shaped pipe 203, the hollow disc 4, and multiple dust suction hoods 401 to surround and draw in the dust and gas generated at the polishing position, so that the dust and gas are drawn into the fan-shaped through hole 201 on the left side and then filtered by the filter screen 202 on the left side. The gas is blocked in the fan-shaped through-hole 201 on the left side. When the air pump 101 supplies gas into the connecting pipe 102, the gas enters the fixed box 601 through the L-shaped pipe 6, and then blows upward through multiple back-blowing pipe heads 602. This back-blowing cleans and unblocks the filter screen 202 and the fan-shaped through-hole 201 on the right side. With the four fan-shaped through-holes 201 and the four filters 202 rotating as a whole, the four filters 202 are sequentially and cyclically sucked and back-blown to clean and unblock. This achieves the effect of simultaneous dust collection and unblocking. By using the synchronous operation and the rotation and recycling of the four filters 202, the continuous smooth effect of dust collection is ensured. This avoids the phenomenon of traditional fixed filters being blocked by dust and impurities, which leads to air blockage and affects the stable operation of dust collection. This improves the long-term continuous stability of dust collection.

[0050] When the filter screen 202 and the fan-shaped through hole 201 are rotated to the right and cleaned by backflushing, the dust blown up by the continuous blowing force enters the L-shaped handle tube 7 and is then discharged into the water body in the water tank 702 through the hose 701. The gas generates bubbles in the water and disperses upwards, while the dust is directly immersed in the water and adsorbed by it. This achieves the effect of automatically guiding the dust outward and using water to adsorb the dust, avoiding the dust from being discharged back into the environment. The integrated backflushing cleaning and dust removal and adsorption purification method eliminates the need for personnel to remove and clean the filter screen 202 and dust residue separately, improving ease of use. After a long period of use, personnel can simply empty and replace the water in the water tank 702.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric polishing device for automobile repair, characterized by: include: A round box (1) has a rotating seat (2) movably fitted inside it. The top of the rotating seat (2) has four fan-shaped through holes (201) at equal intervals in a ring. The filter screen (202) consists of four parts, each fixedly installed in a corresponding fan-shaped through hole (201); The drive motor (3) is fixedly installed on the top of the round box (1) and its output shaft is fixedly connected to the center of the top of the round rotating base (2); The rotating shaft (5) is fixedly connected to the center of the bottom of the circular rotating base (2); The grinding disc (501) is fixedly connected to the bottom end of the rotating shaft (5); The suction back-blowing unblocking component is fixedly installed at the bottom of the round box (1) and connected to the fan-shaped through holes (201) on the left and right sides; The enclosure assembly is rotatably sleeved on the outside of the rotating shaft (5) and connected to the upper part of the fan-shaped through hole (201) on the left side; The L-shaped handle tube (7) is embedded and fixed on the top right side of the round box (1) and connected to the upper part of the fan-shaped through hole (201) on the right side. The dust removal water adsorption and purification component is connected and fixed to the right end of the L-shaped handle tube (7).

2. The electric polishing device for automobile repair according to claim 1, characterized by: The suction backflushing unblocking assembly includes a connecting pipe (102) fixedly installed at the bottom of the round box (1). The rotating shaft (5) is located inside the connecting pipe (102). An air pump (101) with an air inlet vertically aligned and connected to the fan-shaped through hole (201) on the left side of the bottom of the round box (1) is fixedly installed. The air outlet of the air pump (101) is connected and fixedly connected to the left side of the inside of the connecting pipe (102). An L-shaped pipe (6) is connected and fixedly connected to the right side of the connecting pipe (102). A fixing box (601) embedded and fixedly installed on the right side of the bottom of the round box (1) is connected and fixedly installed at the top of the L-shaped pipe (6). A plurality of backflushing pipe heads (602) that are vertically aligned and connected to the fan-shaped through hole (201) on the right side are connected and fixedly installed at the top of the fixing box (601).

3. The electric polishing device for automobile repair according to claim 2, characterized in that: The enclosed suction assembly includes a hollow disc (4) rotatably sleeved on the outside of the rotating shaft (5). The top left side of the hollow disc (4) is connected to the top left side of the round box (1) and is fixed with the same U-shaped tube (203). One end of the U-shaped tube (203) is vertically aligned and connected to the upper part of the fan-shaped through hole (201) on the left side. The bottom of the hollow disc (4) is connected and fixed with multiple dust hoods (401) in an annular shape at equal intervals. The polishing disc (501) is located between the multiple dust hoods (401). The top of the hollow disc (4) is fixedly connected to the bottom of the connecting pipe (102).

4. The electric polishing device for automobile repair according to claim 1, characterized by: The dust removal water adsorption and purification component includes a water tank (702) filled with water. A hose (701) is fixedly installed on the left inner wall of the water tank (702). The top end of the hose (701) is connected and fixed to the right end of the L-shaped handle tube (7).

5. The electric polishing device for automobile repair according to claim 3, characterized in that: The inner diameter of the air inlet of the air pump (101) is larger than the distance between two adjacent fan-shaped through holes (201).

6. The electric polishing device for automobile repair according to claim 1, characterized by: The round box (1) consists of a cylindrical box body with an opening at the top and a cover plate fixed to the top of the cylindrical box body. The top of the cover plate has a first movable through hole for the output shaft of the drive motor (3) to pass through. The bottom of the cover plate and the bottom inner wall of the cylindrical box body slide in contact with the top and bottom of the round rotating seat (2), respectively.

7. The electric polisher for vehicle repair according to claim 3, characterized in that: The top of the hollow disc (4) is provided with a circular perforation, and a bearing is fixedly sleeved in the circular perforation, and the inner ring of the bearing is fixedly sleeved with the outer side of the rotating shaft (5), and the bottom of the hollow disc (4) is provided with a circular movable perforation for the rotating shaft (5) to movably pass through.

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