Environment-friendly polishing device for flange machining and using method of environment-friendly polishing device

Abstract

The invention discloses an environment-friendly polishing device for flange machining and a using method of the environment-friendly polishing device, and belongs to the technical field of flange machining, the environment-friendly polishing device for flange machining comprises a dust collection shell, and further comprises a conveying part arranged on the lower side of the interior of the dust collection shell and used for conveying a flange; the overturning assembly is arranged in the dust collection shell, is arranged in the middle of the conveying part and is used for overturning the flange; the two polishing parts are arranged on the two sides of the overturning assembly, and each polishing part comprises a hydraulic oil cylinder fixedly connected with the dust collection shell, a polishing base connected with a piston rod of the hydraulic oil cylinder and a polishing assembly arranged in the polishing base; the centering and positioning mechanism is arranged on the side edge of the conveying part and is used for centering and clamping the flange on the conveying part; in the flange conveying and feeding period, the flange is overturned, then polishing work on multiple faces of the flange is completed, and the flange machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, and in particular to an environmentally friendly polishing device for flange processing and a use method thereof. Background Art

[0002] Flanges are parts that connect shafts to each other. They are used to connect pipe ends, to connect two devices, and are also used as flanges on equipment inlets and outlets. Flange processing requires grinding and polishing to make the flange more refined and facilitate flange connection.

[0003] The existing polishing device generally only polishes one side of the flange. When the flange needs to be polished on both sides, it needs to be turned over manually and then repositioned and clamped. The operation is cumbersome, resulting in low polishing efficiency and is not suitable for industrial applications. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an environmentally friendly polishing device for flange processing and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An environmentally friendly polishing device for flange processing, comprising a dust collecting shell, and also comprising: A conveying part, which is arranged at the lower inner side of the dust collecting housing and is used for conveying the flange; A flip assembly, which is arranged in the dust collecting housing and in the middle of the conveying part, and is used for flipping the flange; A polishing part, wherein the polishing part is provided with two groups and is placed on both sides of the flip assembly, and the polishing part comprises a hydraulic cylinder fixedly connected to the dust collecting housing, a polishing seat connected to the piston rod of the hydraulic cylinder, and a polishing assembly arranged in the polishing seat; A centering and positioning mechanism, which is arranged on the side of the conveying part and is used for centering and clamping the flange on the conveying part; Wherein, a transmission assembly is arranged between the centering and positioning mechanism and the polishing seat.

[0006] Preferably, the centering positioning mechanism includes a threaded rod threadedly connected to the dust collecting housing, a movable plate arranged at the end of the threaded rod, a first elastic telescopic rod connected to the movable plate, and a clamping plate arranged at the end of the first elastic telescopic rod away from the movable plate, and the clamping plate is provided with an arc groove matching the flange.

[0007] Preferably, the transmission assembly includes a first tooth plate connected to the polishing seat and a movable gear meshingly connected to the first tooth plate, and the movable gear is rotatably connected to the inner wall of the dust collecting housing and is slidably connected to the threaded rod.

[0008] Preferably, a guide bar is fixedly provided on the inner side wall of the movable gear, and a guide groove matching with the guide bar is formed on the threaded rod.

[0009] Preferably, the polishing seat includes a connecting plate connected to the hydraulic cylinder piston rod and the first tooth plate, a second elastic telescopic rod arranged on the lower side of the connecting plate, and a main seat body arranged at the bottom of the second elastic telescopic rod, and the polishing assembly is arranged in the main seat body.

[0010] Preferably, the polishing assembly includes a polishing motor fixed on the main seat body, a reciprocating screw connected to the output shaft of the polishing motor and rotatably connected in the main seat body, a sleeve threadedly connected to the reciprocating screw, and a polishing brush connected to the sleeve.

[0011] Preferably, the flip assembly includes a rotating rod rotatably connected to the dust collecting shell, a flip block arranged on the rotating rod, two driven gears arranged on the rotating rod, and a rack rack meshingly connected to the two driven gears, the rack rack is connected to the first tooth plate through a connecting plate, and the flip block is provided with a placement groove for placing a flange.

[0012] Preferably, the conveying part includes a conveying frame and a plurality of belt conveying assemblies arranged on the conveying frame, the flip block is placed between two adjacent belt conveying assemblies, and a support plate for supporting the transmission belt of the belt conveying assembly is fixed on the conveying frame.

[0013] Preferably, a third elastic telescopic rod is provided between the conveying frame and the inner bottom wall of the dust collecting shell, a first inclined surface is provided at the bottom of the movable plate, and a second inclined surface movably opposed to the first inclined surface is provided on the side wall of the conveying frame.

[0014] The present invention also discloses a method for using an environmentally friendly polishing device for flange processing, comprising the following steps: S1: placing the flange to be polished on the belt conveyor assembly of the conveying part, so that the belt conveyor assembly conveys the flange, and the flange moves to the lower side of the polishing part; S2: Control the piston rod of the hydraulic cylinder to drive the polishing seat to move downward, so that the polishing assembly in the polishing seat moves to the lower flange; When the polishing seat moves downward, it drives the first tooth plate to mesh with the movable gear on the outer side of the threaded rod for transmission. The movable gear drives the threaded rod to rotate through the guide bar. During the rotation of the threaded rod, the movable plate is driven to move relative to the dust collecting housing, so that the movable plate drives the clamping plate to abut and clamp the flange on the belt conveying assembly through the first elastic telescopic rod. As the belt conveying assembly conveys the flange, the flange moves to the inside of the arc groove of the clamping plate. When the first tooth plate moves, the rack frame is driven to move, so that the rack frame and the driven gear mesh and transmit, and the rotating rod drives the flip block to rotate; S3: As the polishing seat continues to move downward, after the clamping plate abuts against the flange through the arc groove, the moving plate continues to move to squeeze the first elastic telescopic rod, and the moving plate approaches the clamping plate, so that the clamping plate is tightly clamped against the flange, and as the moving plate continues to move, the first inclined surface on the lower side of the moving plate squeezes the second inclined surface on the upper side of the conveying frame, so that the conveying part moves downward as a whole, and the belt conveying assembly no longer abuts against the flange; S4: Control the operation of the polishing assembly in the polishing seat, the polishing motor drives the reciprocating screw to rotate, and the sleeve on the reciprocating screw drives the polishing brush to reciprocate along the axial direction of the reciprocating screw, so that the bristles on the polishing brush polish the top of the flange clamped by the clamping plate and the upper part of the flange side wall; S5: After the polishing of the flange top and the upper part of the flange side wall is completed, the hydraulic cylinder drives the polishing seat to move upward, the clamping plate and the conveying part are reset, and the belt conveying assembly of the conveying part continues to convey the flange, and the flange after preliminary polishing is moved to the placement groove of the flip block; S6: After the polishing seat is moved up and reset to the initial position, steps S2-S5 are repeated, during which the turning block drives the flange that has been initially polished in the placement groove to turn to the other side; After the belt conveying assembly of the conveying part continues to convey the flange, another group of polishing parts in the dust collecting shell completes the polishing work on the remaining surface of the flange, thereby realizing the continuous polishing processing work on the flange.

[0015] Compared with the prior art, the present invention provides an environmentally friendly polishing device for flange processing and a method for using the same, which has the following beneficial effects: 1. The environmentally friendly polishing device for flange processing and its use method, when the polishing part is controlled to move downward to polish the flange, the centering and positioning mechanism automatically clamps the flange conveyed by the conveying part to ensure the flange grinding effect. At the same time, during the downward movement of the polishing part, the flipping component automatically works to realize the automatic flipping of the pre-polished flange. The operation is simple, the polishing work of multiple surfaces of the flange is completed, and the flange processing efficiency is improved; 2. The environmentally friendly polishing device for flange processing and its use method, the flange on the belt conveyor assembly is abutted and clamped by the clamping plate, and as the belt conveyor assembly conveys the flange, the flange moves to the inside of the arc groove of the clamping plate, and as the polishing seat continues to move downward, after the clamping plate abuts against the flange through the arc groove, the moving plate continues to move to squeeze the first elastic telescopic rod, and the moving plate approaches the clamping plate, so that the clamping plate uses the arc groove to clamp the flange tightly, thereby preventing the flange from loosening during clamping, thereby ensuring the flange processing quality; 3. The environment-friendly polishing device for flange processing and the use method thereof: the polishing seat is continuously moved downward, and after the clamping plate clamps the flange tightly, the first inclined surface on the lower side of the movable plate squeezes the second inclined surface on the upper side of the conveying frame, so that the conveying part moves downward as a whole, and the belt conveying assembly no longer abuts against the flange, thereby avoiding serious wear of the conveying belt of the belt conveying assembly due to contact with the fixed and clamped flange during transmission, thereby ensuring the service life of the belt conveying assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 The structure of the present invention is schematically shown Figure 3 ; Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 5 It is a schematic diagram of the structure inside the dust collecting housing of the present invention; Figure 6 It is a schematic diagram of the external structure of the movable plate of the present invention; Figure 7 is a schematic diagram of the external structure of the first tooth plate of the present invention; Figure 8 It is a schematic diagram of the structure of the dust collecting housing of the present invention; Fig. 9 It is a schematic diagram of the structure of the movable gear and the threaded rod of the present invention; Fig.10 It is a structural schematic diagram of the conveying part of the present invention; Fig.11 It is a schematic structural diagram of the polishing assembly of the present invention.

[0017] In the figure: 1. dust collecting shell; 2. conveying part; 201. conveying frame; 202. belt conveying assembly; 203. support plate; 204. third elastic telescopic rod; 3. polishing part; 301. hydraulic cylinder; 302. polishing seat; 3021. connecting plate; 3022. second elastic telescopic rod; 3023. main seat body; 4. threaded rod; 401. moving plate; 402. first elastic telescopic rod; 403. clamping plate; 4031. arc groove; 404. guide groove; 5. first tooth plate; 501. movable gear; 5011. guide strip; 6. polishing motor; 601. reciprocating screw rod; 602. sleeve; 603. polishing brush; 7. rotating rod; 701. flip block; 7011. placement groove; 702. driven gear; 703. rack frame. DETAILED DESCRIPTION

[0018] 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.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an environmentally friendly polishing device for flange processing, comprising a dust collecting housing 1, and further comprising: The conveying part 2 is arranged at the lower side of the dust collecting housing 1 and is used for conveying the flange; A flip assembly is arranged in the dust collecting housing 1 and in the middle of the conveying part 2, and is used for flipping the flange; The polishing part 3 is provided with two groups and is placed on both sides of the flip assembly. The polishing part 3 includes a hydraulic cylinder 301 fixedly connected to the dust collecting housing 1, a polishing seat 302 connected to the piston rod of the hydraulic cylinder 301, and a polishing assembly arranged in the polishing seat 302; A centering and positioning mechanism, which is arranged on the side of the conveying part 2 and is used for centering and clamping the flange on the conveying part 2; A transmission assembly is provided between the centering and positioning mechanism and the polishing seat 302 .

[0021] Specifically, the flange to be polished is placed on the conveying part 2, and the flange is conveyed. The flange moves to the lower side of the polishing part 3. When the polishing part 3 is controlled to move downward to polish the flange, the centering and positioning mechanism automatically clamps the flange conveyed by the conveying part 2, so that the polishing part 3 can stably polish the flange to ensure the flange polishing effect. At the same time, during the downward movement of the polishing part 3, the flipping component automatically works to realize automatic flipping of the pre-polished flange. The operation is simple, and the polishing work of multiple surfaces of the flange is completed, thereby improving the flange processing efficiency. The polishing work of the flange by the polishing part 3 is completed in the dust collecting shell 1, which can avoid the splashing of a large amount of dust generated during polishing and reduce air pollution.

[0022] Example 2: Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , an environmentally friendly polishing device for flange processing, based on Example 1, further, the centering and positioning mechanism includes a threaded rod 4 threadedly connected to the dust collecting housing 1, a movable plate 401 arranged at the end of the threaded rod 4, a first elastic telescopic rod 402 connected to the movable plate 401, and a clamping plate 403 arranged at the end of the first elastic telescopic rod 402 away from the movable plate 401, and the clamping plate 403 is provided with an arc groove 4031 that matches the flange.

[0023] Furthermore, the transmission assembly includes a first tooth plate 5 connected to the polishing seat 302 and a movable gear 501 meshingly connected to the first tooth plate 5 . The movable gear 501 is rotatably connected to the inner wall of the dust collecting housing 1 and is slidably connected to the threaded rod 4 .

[0024] Furthermore, a guide bar 5011 is fixedly disposed on the inner side wall of the movable gear 501 , and a guide groove 404 matching with the guide bar 5011 is formed on the threaded rod 4 .

[0025] Specifically, the piston rod of the hydraulic oil cylinder 301 is controlled to drive the polishing seat 302 to move downward, so that the polishing assembly in the polishing seat 302 moves to the lower flange. When the polishing seat 302 moves downward, it drives the first toothed plate 5 to mesh with the movable gear 501 on the outer side of the threaded rod 4. The movable gear 501 drives the threaded rod 4 to rotate through the guide bar 5011. During the rotation of the threaded rod 4, the movable plate 401 is driven to move relative to the dust collecting housing 1, so that the movable plate 401 drives the clamping plate 403 to move the belt conveying assembly 202 through the first elastic telescopic rod 402. The flange on it abuts and clamps, and as the belt conveyor assembly 202 conveys the flange, the flange moves to the inside of the arc groove 4031 of the clamping plate 403. As the polishing seat 302 continues to move downward, after the clamping plate 403 abuts against the flange through the arc groove 4031, the movable plate 401 continues to move and squeezes the first elastic telescopic rod 402. The movable plate 401 approaches the clamping plate 403, so that the clamping plate 403 cooperates with the arc groove 4031 to clamp the flange, thereby increasing the clamping area of ​​the flange and ensuring the clamping stability of the flange.

[0026] Example 3: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.11 , an environmentally friendly polishing device for flange processing, based on Example 2, further, the polishing seat 302 includes a connecting plate 3021 connected to the piston rod of the hydraulic cylinder 301 and the first tooth plate 5, a second elastic telescopic rod 3022 arranged at the lower side of the connecting plate 3021, and a main seat body 3023 arranged at the bottom of the second elastic telescopic rod 3022, and the polishing assembly is arranged in the main seat body 3023.

[0027] Furthermore, the polishing assembly includes a polishing motor 6 fixed on the main seat body 3023, a reciprocating screw 601 connected to the output shaft of the polishing motor 6 and rotatably connected in the main seat body 3023, a sleeve 602 threadedly connected to the reciprocating screw 601, and a polishing brush 603 connected to the sleeve 602.

[0028] Specifically, the piston rod of the hydraulic cylinder 301 drives the connecting plate 3021 to move downward, and the connecting plate 3021 drives the main seat body 3023 to move downward through the second elastic telescopic rod 3022, so that the polishing component in the main seat body 3023 can flexibly abut against the flange in the clamping. During the clamping period, when the polishing component abuts against the flange, the second elastic telescopic rod 3022 automatically contracts to avoid the polishing component from abutting against the flange. As a result, the polishing component presses down the clamped flange under the action of the hydraulic cylinder 301, which not only affects the polishing, but also affects the polishing. The polishing work of the optical component on the flange makes it impossible for the polishing component to slide smoothly, and also causes the flange to be forced downward under the clamping of the clamping plate 403 and be blocked by the clamping plate 403, so that the bristles of the polishing brush 603 cannot effectively polish part of the flange side wall area; when the polishing component is working, the polishing motor 6 is controlled to run, and the output shaft of the polishing motor 6 drives the reciprocating screw 601 to rotate, and the sleeve 602 on the reciprocating screw 601 drives the polishing brush 603 to reciprocate along the axial direction of the reciprocating screw 601, so that the bristles on the polishing brush 603 polish the top of the flange clamped by the clamping plate 403 and the upper part of the flange side wall.

[0029] Example 4: Reference Figure 3 , Figure 4 and Figure 5 , an environmentally friendly polishing device for flange processing, based on Example 3, further, the flip assembly includes a rotating rod 7 rotatably connected to the dust collecting shell 1, a flip block 701 arranged on the rotating rod 7, two driven gears 702 arranged on the rotating rod 7, and a rack rack 703 meshingly connected to the two driven gears 702, the rack rack 703 is connected to the first tooth plate 5 through a connecting plate, and a placement groove 7011 for placing the flange is opened on the flip block 701.

[0030] Specifically, the piston rod of the hydraulic cylinder 301 is controlled to drive the polishing seat 302 to move downward, so that the polishing assembly in the polishing seat 302 moves to the lower flange. When the polishing seat 302 moves downward, it drives the rack frame 703 connected to the first tooth plate 5 to move, so that the rack frame 703 and the driven gear 702 are meshed and transmitted, and the rotating rod 7 drives the flip block 701 to rotate. After the polishing of the flange top and the upper part of the flange side wall is completed, the hydraulic cylinder 301 drives the polishing seat 302 to move upward, the clamping plate 403 and the conveying part 2 are reset, and the conveying part 2 continues to convey the flange. The flange after preliminary polishing moves to the placement groove 7011 of the flip block 701. When the polishing part 3 moves downward again to polish the upper end face of another flange, the flip block 701 drives the flange that has been preliminary polished in the placement groove 7011 to flip to the other side, and then another group of polishing parts 3 in the dust collecting shell 1 completes the polishing work on the remaining surface of the flange, thereby realizing continuous polishing processing of the flange.

[0031] Example 5: Reference Figure 4 , Figure 5 and Fig.10 , an environmentally friendly polishing device for flange processing. On the basis of Example 4, further, the conveying part 2 includes a conveying frame 201 and a plurality of belt conveying assemblies 202 arranged on the conveying frame 201, and the flip block 701 is placed between two adjacent belt conveying assemblies 202. The conveying frame 201 is fixedly provided with a support plate 203 for supporting the belt conveying assembly 202 to transmit the belt.

[0032] Specifically, the conveyor belt of the belt conveyor assembly 202 is used to convey the flange, and the support plate 203 can support the conveyor belt to prevent the conveyor belt from falling under the action of the flange. It should be noted that the conveyor frame 201 is provided with a driving device for driving the belt conveyor assembly 202 to transmit. This is the prior art and common knowledge in the field, and will not be elaborated here.

[0033] Example 6: Reference Figure 3 , Figure 5 and Fig.10 , an environmentally friendly polishing device for flange processing, based on Example 5, further, a third elastic telescopic rod 204 is arranged between the conveying frame 201 and the inner bottom wall of the dust collecting shell 1, a first inclined surface is opened at the bottom of the movable plate 401, and a second inclined surface is opened on the side wall of the conveying frame 201 to resist the first inclined surface.

[0034] Specifically, as the polishing seat 302 continues to move downward, after the clamping plate 403 tightly clamps the flange, the first inclined surface on the lower side of the movable plate 401 squeezes the second inclined surface on the upper side of the conveying frame 201, so that the conveying part 2 moves downward as a whole, and the belt conveyor assembly 202 no longer abuts against the flange, thereby preventing the conveying belt of the belt conveyor assembly 202 from being severely worn due to contact with the fixed and clamped flange during transmission, thereby ensuring the service life of the belt conveyor assembly 202.

[0035] The present invention also discloses a method for using an environmentally friendly polishing device for flange processing, comprising the following steps: S1: placing the flange to be polished on the belt conveyor assembly 202 of the conveying section 2, so that the belt conveyor assembly 202 conveys the flange, and the flange moves to the lower side of the polishing section 3; S2: Control the piston rod of the hydraulic cylinder 301 to drive the polishing seat 302 to move downward, so that the polishing assembly in the polishing seat 302 moves to the lower flange; When the polishing seat 302 moves downward, it drives the first tooth plate 5 to mesh with the movable gear 501 on the outer side of the threaded rod 4 for transmission. The movable gear 501 drives the threaded rod 4 to rotate through the guide bar 5011. During the rotation of the threaded rod 4, the movable plate 401 is driven to move relative to the dust collecting housing 1, so that the movable plate 401 drives the clamping plate 403 to abut and clamp the flange on the belt conveying assembly 202 through the first elastic telescopic rod 402. As the belt conveying assembly 202 conveys the flange, the flange moves to the inside of the arc groove 4031 of the clamping plate 403; When the first tooth plate 5 moves, the rack frame 703 is driven to move, so that the rack frame 703 and the driven gear 702 are meshed and transmitted, and the rotating rod 7 drives the flip block 701 to rotate; S3: As the polishing seat 302 continues to move downward, after the clamping plate 403 abuts against the flange through the arc groove 4031, the moving plate 401 continues to move to squeeze the first elastic telescopic rod 402, and the moving plate 401 approaches the clamping plate 403, so that the clamping plate 403 clamps the flange tightly, and as the moving plate 401 continues to move, the first inclined surface on the lower side of the moving plate 401 squeezes the second inclined surface on the upper side of the conveying frame 201, so that the conveying part 2 moves downward as a whole, and the belt conveying assembly 202 no longer abuts against the flange; S4: Control the polishing assembly in the polishing seat 302 to operate, the polishing motor 6 drives the reciprocating screw 601 to rotate, and the sleeve 602 on the reciprocating screw 601 drives the polishing brush 603 to reciprocate along the axial direction of the reciprocating screw 601, so that the bristles on the polishing brush 603 polish the top of the flange clamped by the clamping plate 403 and the upper part of the flange side wall; S5: After the polishing of the flange top and the upper part of the flange side wall is completed, the hydraulic cylinder 301 drives the polishing seat 302 to move upward, the clamping plate 403 and the conveying part 2 are reset, and the belt conveying assembly 202 of the conveying part 2 continues to convey the flange, and the flange after preliminary polishing moves to the placement groove 7011 of the flip block 701; S6: After the polishing seat 302 is moved up and reset to the initial position, steps S2-S5 are repeated. During this period, the turning block 701 drives the flange that has been initially polished in the placement groove 7011 to turn to the other side; After the belt conveying assembly 202 of the conveying part 2 continues to convey the flange, another group of polishing parts 3 in the dust collecting housing 1 completes the polishing work on the remaining surface of the flange, thereby realizing continuous polishing processing of the flange.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmentally friendly polishing device for flange processing, comprising a dust collecting housing (1), characterized in that: Also includes: A conveying portion (2), the conveying portion (2) being arranged on the lower side of the interior of the dust collecting housing (1) and being used for conveying the flange; A flip assembly, the flip assembly being arranged in the dust collecting housing (1) and located in the middle of the conveying portion (2), and being used for flipping the flange; A polishing part (3), wherein the polishing part (3) is provided with two groups and is disposed on both sides of the flip assembly, the polishing part (3) comprising a hydraulic cylinder (301) fixedly connected to the dust collecting housing (1), a polishing seat (302) connected to the piston rod of the hydraulic cylinder (301), and a polishing assembly disposed in the polishing seat (302); A centering and positioning mechanism, the centering and positioning mechanism being arranged on the side of the conveying portion (2) and being used for centering and clamping the flange on the conveying portion (2); Wherein, a transmission component is provided between the centering positioning mechanism and the polishing seat (302).

2. The environmentally friendly polishing device for flange processing according to claim 1, characterized in that: The centering and positioning mechanism comprises a threaded rod (4) threadedly connected to the dust collecting housing (1), a movable plate (401) arranged at the end of the threaded rod (4), a first elastic telescopic rod (402) connected to the movable plate (401), and a clamping plate (403) arranged at an end of the first elastic telescopic rod (402) away from the movable plate (401), wherein the clamping plate (403) is provided with an arc groove (4031) matching with the flange.

3. The environmentally friendly polishing device for flange processing according to claim 2, characterized in that: The transmission assembly comprises a first toothed plate (5) connected to the polishing seat (302) and a movable gear (501) meshingly connected to the first toothed plate (5); the movable gear (501) is rotatably connected to the inner wall of the dust collecting housing (1) and is slidably connected to the threaded rod (4).

4. The environmentally friendly polishing device for flange processing according to claim 3 is characterized in that: A guide strip (5011) is fixedly provided on the inner side wall of the movable gear (501), and a guide groove (404) matching with the guide strip (5011) is provided on the threaded rod (4).

5. The environmentally friendly polishing device for flange processing according to claim 4, characterized in that: The polishing seat (302) comprises a connecting plate (3021) connected to the piston rod of the hydraulic cylinder (301) and the first tooth plate (5), a second elastic telescopic rod (3022) arranged at the lower side of the connecting plate (3021), and a main seat body (3023) arranged at the bottom of the second elastic telescopic rod (3022), and the polishing assembly is arranged in the main seat body (3023).

6. The environmentally friendly polishing device for flange processing according to claim 5, characterized in that: The polishing assembly comprises a polishing motor (6) fixedly mounted on a main seat body (3023), a reciprocating screw (601) connected to an output shaft of the polishing motor (6) and rotatably connected within the main seat body (3023), a sleeve (602) threadedly connected to the reciprocating screw (601), and a polishing brush (603) connected to the sleeve (602).

7. The environmentally friendly polishing device for flange processing according to claim 6, characterized in that: The flip assembly comprises a rotating rod (7) rotatably connected to the dust collecting housing (1), a flip block (701) arranged on the rotating rod (7), two driven gears (702) arranged on the rotating rod (7), and a rack frame (703) meshingly connected to the two driven gears (702), the rack frame (703) being connected to the first gear plate (5) via a connecting plate, and a placement groove (7011) for placing a flange is provided on the flip block (701).

8. The environmentally friendly polishing device for flange processing according to claim 7, characterized in that: The conveying portion (2) comprises a conveying frame (201) and a plurality of belt conveying assemblies (202) arranged on the conveying frame (201); the flip block (701) is disposed between two adjacent belt conveying assemblies (202); and a support plate (203) for supporting a conveying belt of the belt conveying assemblies (202) is fixedly provided on the conveying frame (201).

9. The environmentally friendly polishing device for flange processing according to claim 8, characterized in that: A third elastic telescopic rod (204) is provided between the conveying frame (201) and the inner bottom wall of the dust collecting housing (1); a first inclined surface is provided at the bottom of the movable plate (401); and a second inclined surface movably abutting against the first inclined surface is provided on the side wall of the conveying frame (201).

10. A method for using the environmentally friendly polishing device for flange processing according to claim 9, characterized in that: The following steps are involved: S1: placing a flange to be polished on a belt conveyor assembly (202) of a conveying section (2), causing the belt conveyor assembly (202) to convey the flange, and the flange moves to the lower side of the polishing section (3); S2: Controlling the piston rod of the hydraulic cylinder (301) to drive the polishing seat (302) to move downward, so that the polishing assembly in the polishing seat (302) moves toward the lower flange; When the polishing seat (302) moves downward, it drives the first tooth plate (5) to mesh with the movable gear (501) on the outer side of the threaded rod (4) for transmission. The movable gear (501) drives the threaded rod (4) to rotate via the guide bar (5011). During the rotation of the threaded rod (4), the movable plate (401) is driven to move relative to the dust collecting housing (1), so that the movable plate (401) drives the clamping plate (403) to abut against and clamp the flange on the belt conveying assembly (202) via the first elastic telescopic rod (402). As the belt conveying assembly (202) conveys the flange, the flange moves to the inside of the arc groove (4031) of the clamping plate (403); When the first tooth plate (5) moves, the rack frame (703) is driven to move, so that the rack frame (703) and the driven gear (702) are meshed and transmitted, and the rotating rod (7) drives the flip block (701) to rotate; S3: As the polishing seat (302) continues to move downward, after the clamping plate (403) contacts the flange through the arc groove (4031), the moving plate (401) continues to move to squeeze the first elastic telescopic rod (402), and the moving plate (401) approaches the clamping plate (403), so that the clamping plate (403) is tightly clamped to the flange, and as the moving plate (401) continues to move, the first inclined surface on the lower side of the moving plate (401) squeezes the second inclined surface on the upper side of the conveying frame (201), so that the conveying part (2) moves downward as a whole, and the belt conveying assembly (202) no longer contacts the flange; S4: Controlling the operation of the polishing assembly in the polishing seat (302), the polishing motor (6) drives the reciprocating screw (601) to rotate, and the sleeve (602) on the reciprocating screw (601) drives the polishing brush (603) to move back and forth along the axial direction of the reciprocating screw (601), so that the bristles on the polishing brush (603) polish the top of the flange clamped by the clamping plate (403) and the upper part of the flange side wall; S5: After the polishing of the flange top and the upper part of the flange side wall is completed, the hydraulic cylinder (301) drives the polishing seat (302) to move upward, the clamping plate (403) and the conveying part (2) are reset, and the belt conveying assembly (202) of the conveying part (2) continues to convey the flange, and the flange after preliminary polishing is moved to the placement groove (7011) of the flip block (701); S6: after the polishing seat (302) is moved upward and reset to the initial position, steps S2-S5 are repeated, during which the turning block (701) drives the flange that has been initially polished in the placement groove (7011) to turn to the other side; After the belt conveying assembly (202) of the conveying section (2) continues to convey the flange, another group of polishing sections (3) in the dust collecting housing (1) completes the polishing work on the remaining surface of the flange, thereby achieving continuous polishing processing of the flange.

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