Dustproof glass fiber reinforced plastic pipe polishing equipment

Abstract

The application discloses a dustproof glass fiber reinforced plastic pipeline polishing equipment, belonging to the technical field of intelligent polishing equipment, which comprises symmetrically distributed connecting frames, symmetrically distributed sealing shells arranged on the connecting frames, sliding rails fixedly connected in the sealing shells, electric sliding blocks arranged in the sliding rails, electric rotating shafts arranged on the electric sliding blocks of the sliding rails, polishing rollers fixedly connected to the electric rotating shafts, sliding shells fixedly connected to the connecting frames, first sliding frames arranged in the sliding shells and elastic membranes fixedly connected between the sealing shells and the adjacent connecting frames. The angle between the sealing shells and the connecting frames is adjusted, so that the two groups of sealing shells simultaneously wrap the ports of the two pipelines, the gap between the sealing shells and the connecting frames is sealed by the elastic membranes, the ports of the pipelines are isolated from the outside during polishing, and then the two pipelines are simultaneously polished by different polishing rollers, so that the polishing time of the two pipelines is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent polishing equipment, and particularly relates to a dustproof glass fiber reinforced plastic (GFRP) pipe polishing equipment. BACKGROUND

[0002] The GFRP pipe is also called a GFRP winding sand pipe. Due to excellent corrosion resistance, heat resistance and aging resistance, the GFRP pipe is widely used in various conveying fields. When the pipes are laid and connected, a fiber cloth coated with resin is usually used to wrap and connect the connecting part of the pipe or a connecting pipe is added between two pipes and then a fiber cloth is used for wrapping and connecting. Before the fiber cloth is used to wrap the port of the GFRP pipe, the port of the GFRP pipe needs to be polished to remove the oxidized glass fiber layer on the surface, so as to ensure the bonding quality of the subsequent fiber cloth and the GFRP pipe.

[0003] However, a large amount of glass fiber debris is generated during the polishing process of the GFRP pipe. The ultra-fine fibers are extremely easy to float into the air and the surrounding environment, are inhaled into the lungs of the workers or are attached to the skin, which seriously threatens the health and also pollutes the environment. In order to reduce the harm, the existing polishing device usually wraps the working port to inhibit the diffusion of the debris.

[0004] However, in actual construction, the situation that the positions of two pipes are fixed and the port polishing and connection need to be performed in a narrow gap often occurs. At this time, the existing device is difficult to insert and effectively wrap any port, so that the harmful debris cannot be effectively isolated and is extremely easy to diffuse to the operation space and the surrounding environment. If the two ends are polished in advance to avoid this problem, the exposed glass fiber port after polishing will be oxidized again during the waiting period for connection, which affects the bonding effect, so that the work needs to be returned or the overall connection efficiency is reduced. SUMMARY

[0005] The present application provides a dustproof GFRP pipe polishing equipment for solving the problems in the above background.

[0006] The technical scheme is: a dustproof glass fiber reinforced plastic pipeline polishing equipment, comprising upper and lower symmetrical connecting frames, symmetrical sealing shells are arranged on the connecting frames, and two adjacent sealing shells on different connecting frames are hingedly connected with each other, symmetrical slide rails are fixedly connected in the sealing shells, electric sliding blocks are arranged in the slide rails, and electric rotating shafts are arranged on the electric sliding blocks of the slide rails in the same sealing shell, polishing rollers are fixedly connected to the electric rotating shafts, rectangular slide shells are fixedly connected to the connecting frames, first slide frames are arranged in the slide shells, symmetrical arc-shaped grooves are arranged on the sealing shells, protrusions are fixedly connected to the first slide frames, the protrusions are located in the corresponding arc-shaped grooves on the adjacent sealing shells and slide in the arc-shaped grooves, rotating rods are rotatably connected to the connecting frames, slide rods are arranged on the rotating rods, first threaded rods are threadedly connected to the sealing shells, transmission rods are fixedly connected to the first threaded rods, universal joints are arranged between the transmission rods and the adjacent slide rods, and elastic membranes are fixedly connected between the sealing shells and the adjacent connecting frames.

[0007] As a further preferred scheme, the axes of the arc-shaped grooves on the sealing shells are in the same plane as the universal joints between the adjacent transmission rods and the adjacent slide rods.

[0008] As a further preferred scheme, symmetrical fixing frames are fixedly connected to the connecting frames, second threaded rods are threadedly connected to the fixing frames, connecting rods are spline-connected to the second threaded rods, the connecting rods are rotatably connected to the adjacent fixing frames, gears are fixedly connected to one ends of the connecting rods away from the adjacent second threaded rods, second slide frames are slidably connected to the fixing frames in a central symmetrical manner, racks are fixedly connected to the second slide frames, the racks of the second slide frames are engaged with the gears on the adjacent connecting rods, and positioning frames are hingedly connected to the second slide frames.

[0009] As a further preferred scheme, support plates are hingedly connected to the positioning frames, rubber blocks are fixedly connected to the support plates, the rubber blocks are used to adapt to the shape of the pipeline, and torsion springs are fixedly connected between the positioning frames and the adjacent support plates.

[0010] As a further preferred scheme, positioning plates are fixedly connected to the support plates, the positioning plates are in contact with the adjacent positioning frames, and the positioning plates are used to drive the adjacent support plates to rotate.

[0011] As a further preferred scheme, the included angle between the positioning frame and the adjacent support plate is greater than 90° and less than 120°, and the support plate is perpendicular to the adjacent positioning plate.

[0012] As a further preferred scheme, the connecting frame is rotationally connected with a pair of symmetrically distributed bidirectional threaded rods, the first sliding frame is threadedly connected with the adjacent bidirectional threaded rod, the first sliding frame is slidingly connected with the adjacent sliding shell, and the sliding rod is spline-connected with the adjacent rotating rod.

[0013] As a further preferred scheme, a plurality of positioning blocks are fixedly arranged on the slide rail of each of the sealing shells and adjacent to the connecting frame, the positioning blocks are used for determining the position of the pipe edge, and all the fixing frames on the same connecting frame are arranged at intervals with all the positioning blocks on the same slide rail.

[0014] As a further preferred scheme, the sealing shell is fixedly connected with an air bag, the air bag is provided with a plurality of uniformly distributed exhaust holes on the side adjacent to the connecting frame, the exhaust holes are used for blowing the debris to move, and the air bag is fixedly connected with a plurality of uniformly distributed sealing strips.

[0015] As a further preferred scheme, the direction of the exhaust holes on the air bag is towards the axis of the connecting frame.

[0016] Compared with the prior art, the present application has the following advantages: 1. The present application adjusts the angle between the sealing shell and the connecting frame, so that the two groups of sealing shells simultaneously wrap the ports of the two pipes, and the gap between the sealing shell and the connecting frame is sealed by the elastic film, so that the ports of the pipes are isolated from the outside during polishing, and then the two pipes are simultaneously polished by different polishing rollers, thereby reducing the polishing time of the two pipes and ensuring the polishing efficiency of the pipes.

[0017] 2. In the process of placing the connecting frame, the positioning frames on the two second sliding frames are driven to move away from each other and press the edges of the pipes, so that the connecting frame is located in the middle of the two pipes, thereby ensuring the accuracy of the position of the connecting frame.

[0018] 3. After the sealing shell wraps one end of the adjacent pipe, the two groups of sealing shells are moved and moved away from each other by rotating the bidirectional threaded rod, thereby adjusting the area of the pipe polished by the polishing roller, and ensuring that the length of the pipe polished meets the use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 2 is a schematic diagram of the three-dimensional structure of the connecting frame, the sealing shell and the slide rail of the present application;

[0021] Figure 3 is a schematic diagram of the three-dimensional structure of the sliding shell, the rotating rod and the transmission rod of the present application;

[0022] Figure 4It is a perspective structural schematic view of the sliding rod, the bidirectional threaded rod and the positioning block of the application.

[0023] Figure 5 It is a perspective structural schematic view of the transmission rod, the fixed frame and the second threaded rod of the application.

[0024] Figure 6 It is a perspective structural schematic view of the support plate, the rubber block and the positioning plate of the application.

[0025] Figure 7 It is a perspective structural schematic view of the second threaded rod, the second sliding frame and the positioning frame of the application.

[0026] Figure 8 It is a perspective structural schematic view of the second sliding frame, the positioning frame and the positioning plate of the application.

[0027] The reference signs: 1-connection frame, 2-sealing shell, 3-sliding rail, 4-polishing roller, 5-sliding shell, 6-first sliding frame, 7-rotation rod, 8-sliding rod, 9-transmission rod, 10-first threaded rod, 11-fixed frame, 12-second threaded rod, 13-connection rod, 14-second sliding frame, 15-positioning frame, 16-support plate, 17-rubber block, 18-torsional spring, 19-positioning plate, 20-bidirectional threaded rod, 21-elastic film, 22-positioning block, 23-air bag, 24-sealing strip. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0029] The existing polishing device cannot be inserted into and effectively wrapped around any port in the case of polishing and docking of the ports in a narrow gap when the positions of the two pipes have been fixed, so that harmful debris cannot be effectively isolated and is easy to spread to the operation space and the surrounding environment.

[0030] Embodiment 1: A dustproof glass fiber reinforced plastic pipe polishing device, as shown in Figures 1-6As shown, the device includes a symmetrically distributed connecting frame 1, with symmetrically distributed sealing shells 2 on the connecting frame 1. Two adjacent sealing shells 2 on different connecting frames 1 are hinged to each other. A symmetrically distributed slide rail 3 is fixed inside the sealing shell 2, and an electric slider is installed inside the slide rail 3. An electric rotating shaft is installed on the electric slider of the slide rail 3 in the same sealing shell 2. A grinding roller 4 is fixed to the electric rotating shaft. A rectangularly distributed sliding shell 5 is fixed to the connecting frame 1. A first sliding frame 6 is installed inside the sliding shell 5. A symmetrically distributed arc-shaped groove is provided on the sealing shell 2. A protrusion is fixed to the first sliding frame 6. The protrusion slides in the corresponding arc-shaped groove on the adjacent sealing shell 2. A rotating rod 7 is rotatably connected to the connecting frame 1. A sliding rod 8 is installed on the rotating rod 7. A first threaded rod 10 is threadedly connected to the sealing shell 2. A transmission rod 9 is fixed to the first threaded rod 10. The transmission rod 9 is connected to the adjacent sliding rod 8 through a universal joint. An elastic membrane 21 is fixed between the sealing shell 2 and the adjacent connecting frame 1.

[0031] Furthermore, such as Figures 2-4 As shown, the axes corresponding to the symmetrically distributed arc-shaped grooves on the sealing shell 2 are all on the same plane as the universal joints between their adjacent transmission rod 9 and adjacent sliding rod 8.

[0032] The above solution provides a method for simultaneously grinding two fixed pipes; in this paper, we take... Figure 2The position of the right part of the connecting frame 1 is described, the connecting frame 1 has two upper and lower symmetrical distribution, and the rear parts of the two connecting frames 1 are hinged to each other, in actual use, the front parts of the two are connected by bolts to increase the stability of the two, wherein the lower connecting frame 1 is provided with a negative pressure adsorption module, the negative pressure adsorption module is obtained from the existing device, and the specific structure will not be described in detail, the negative pressure adsorption module is used to collect the fiber debris generated in the process of pipe polishing, one connecting frame 1 has two left and right symmetrical distribution of sealing shell 2, in use, the upper and lower adjacent two sealing shells 2 jointly enclose a circular ring to wrap the port of a pipe, and the rear parts of the two adjacent sealing shells 2 on different connecting frames 1 are hinged to each other, in use, the front parts of the corresponding two sealing shells 2 are connected by bolts to increase the stability of the two, one sealing shell 2 has two left and right symmetrical distribution of slide rail 3, the slide rail 3 is used for guiding the movement of the electric sliding block thereon, and the corresponding two slide rails 3 on the upper and lower adjacent two sealing shells 2 jointly enclose a circle, so that the corresponding electric sliding blocks of the two slide rails 3 can drive the polishing roller 4 to move around the pipe to polish, the speed of the polishing roller 4 driven by the electric sliding block on the slide rail 3 and the rotating speed of the polishing roller 4 around the pipe during polishing can be adjusted during polishing according to the polishing condition of the pipe, the diameter of the polishing roller 4 gradually decreases from left to right, the shape of the polishing roller 4 can be adjusted according to the actual situation, the lower part of the connecting frame 1 has four sliding shells 5, in this paper, the sliding shell 5 and the adjacent first sliding frame 6 do not appear relative sliding, one sealing shell 2 has two front and rear symmetrical distribution of arc grooves, and the central angle of the arc groove is 70°, the initial position of the convex block on the first sliding frame 6 is in the middle of the adjacent arc grooves on the sealing shell 2, the circular axes corresponding to the arc grooves on the two sealing shells 2 on the same side coincide, so that the sealing shell 2 rotates around the center of the arc groove circle relative to the connecting frame 1.

[0033] The middle part of the upper connecting frame 1 is rotatably connected with a rotating rod 7, the rotating rod 7 has two left and right symmetrical distribution of sliding rods 8, in this section, the two sliding rods 8 and the rotating rod 7 will not appear relative movement, the upper part of the upper sealing shell 2 is threadedly connected with a first threaded rod 10, initially, the connection between the sealing shell 2 and the first threaded rod 10 is located in the middle of the threaded groove on the first threaded rod 10, so that the first threaded rod 10 can move left and right relative to the adjacent sealing shell 2, adjust the direction of rotation of the sealing shell 2, when it is necessary to adjust the angle between the sealing shell 2 and the connecting frame 1, taking the clockwise rotation of the right sealing shell 2 as an example Figure 2(look from front to back), the elastic film 21 is used to adapt to the length and angle changes between the sealing shell 2 and the adjacent connecting frame 1, to ensure that they are in a sealed state, to ensure that the fiber debris generated during the pipe polishing process cannot be discharged from the gap between them, the worker measures the included angle between the two pipes, and then rotates the rotating rod 7 according to the measured angle, the rotating rod 7 drives the two sliding rods 8 to rotate synchronously, the sliding rod 8 drives the first threaded rod 10 to rotate synchronously through the transmission rod 9 and the universal joint, and then the upper sealing shell 2 rotates clockwise relative to the connecting frame 1 Figure 2 (look from front to back), until the included angle of the axes between the two sealing shells 2 and the included angle between the two pipes are the same, the worker stops rotating the rotating rod 7 to complete the adjustment of the angle of the connecting frame 1 and the sealing shell 2, and then the worker puts the adjusted sealing shell 2 on the port of the pipe and fixes it through bolts, to complete the wrapping of the pipe port, to prevent the fiber debris generated during the polishing process from flying, and then the corresponding electric sliding block and electric rotating shaft on the slide rail 3 are started, the electric rotating shaft drives the polishing roller 4 to rotate, and the electric sliding block drives the polishing roller 4 to rotate along the corresponding two slide rails 3, so that the polishing roller 4 rotates and rotates to polish the port of the pipe. During this process, the negative pressure adsorption module on the lower connecting frame 1 starts to collect the flying fiber debris.

[0034] Further, as shown in Figures 2-8 , the connecting frame 1 is fixedly connected with symmetrically distributed fixing frames 11, the fixing frame 11 is threadedly connected with a second threaded rod 12, the second threaded rod 12 is spline-connected with a connecting rod 13, the connecting rod 13 is rotatably connected with the adjacent fixing frame 11, the end of the connecting rod 13 away from the adjacent second threaded rod 12 is fixedly connected with a gear, the fixing frame 11 is slidably connected with a second sliding frame 14 which is centrally symmetrically distributed, the second sliding frame 14 is fixedly connected with a rack, the rack of the second sliding frame 14 is engaged with the gear on the adjacent connecting rod 13, and the second sliding frame 14 is hingedly connected with a positioning frame 15.

[0035] Further, as shown in Figures 5-8 , the positioning frame 15 is hingedly connected with a support plate 16, the support plate 16 is fixedly connected with a rubber block 17, the rubber block 17 is used to adapt to the shape of the pipe, and the positioning frame 15 and the adjacent support plate 16 are fixedly connected with a torsional spring 18.

[0036] Further, as shown in Figures 6-8 , the support plate 16 is fixedly connected with a positioning plate 19, the positioning plate 19 is in contact with the adjacent positioning frame 15, and the positioning plate 19 is used to drive the adjacent support plate 16 to rotate.

[0037] Further, as shown in Figures 6-8 , the included angle between the positioning frame 15 and the adjacent support plate 16 is greater than 90° and less than 120°, and the support plate 16 is perpendicular to the adjacent positioning plate 19.

[0038] The above scheme provides a way to position the connecting frame 1 in the middle of two pipes; taking the position of the lower connecting frame 1 and its parts as an example, each connecting frame 1 has two fixing frames 11 symmetrically distributed in front and back, and the included angle between the extension lines of the two fixing frames 11 is 90°, the fixing frame 11 is composed of a circular tube and a rectangular shell, the circular tube of the fixing frame 11 is fixedly connected with the adjacent connecting frame 1, the circular tube of the fixing frame 11 is provided with a threaded groove, initially, the second threaded rod 12 is located at the lower part of the threaded groove of the fixing frame 11, the connecting rod 13 is located at the upper part of the spline groove of the adjacent second threaded rod 12, the rough surface is arranged at the rotating part of the second sliding frame 14 and the positioning frame 15, which is used to increase the resistance when the two relatively rotate, initially, the second sliding frame 14 is perpendicular to the positioning frame 15, and the positioning frame 15 is in contact with the adjacent fixing frame 11, which is used to make the positioning frame 15 unable to rotate at the beginning, during the process that the adjacent two second sliding frames 14 move away from each other, when the positioning frame 15 contacts the edge of the pipe, the positioning frame 15 extrudes the edge of the pipe and rotates relative to the adjacent second sliding frame 14 to adapt to the direction of the edge of the pipe, increases the contact area with the pipe, and increases the positioning accuracy of the positioning frame 15, when the second threaded rod 12 rotates counterclockwise (from bottom to top) Figure 7 , the second threaded rod 12 moves upward relative to the fixing frame 11, the second threaded rod 12 moves upward relative to the connecting rod 13, one end of the connecting rod 13 is fixedly connected with a gear, when the second threaded rod 12 rotates counterclockwise, the second threaded rod 12 drives the connecting rod 13 to rotate synchronously, the connecting rod 13 drives the adjacent two second sliding frames 14 to move away from each other through the gear on it and the rack on the adjacent two second sliding frames 14, so that the second sliding frame 14 drives the positioning frame 15 on it to approach the edge of the pipe, at this time the positioning frame 15 is separated from the adjacent fixing frame 11, the positioning frame 15 can rotate relative to the adjacent second sliding frame 14, until the two positioning frames 15 rotate and make their back sides adhere to the adjacent pipe, the second sliding frame 14 and its parts stop, so that the fixing frame 11 is located in the middle position of the two pipes.

[0039] The upper part of the positioning frame 15 is hingedly connected with a support plate 16 for pressing the inner wall of the pipeline from the inner side, a torsion spring 18 is used to drive the support plate 16 to rotate reversely and reset, a rubber block 17 is used to adapt to the arc surface of the inner wall of the pipeline, and the stability of the relative position between the support plate 16 and the pipeline is increased. The angle between the positioning frame 15 and the adjacent support plate 16 is used to facilitate the edge of the corresponding pipeline to enter between the positioning frame 15 and the adjacent support plate 16, so as to facilitate the subsequent positioning of the edges of the pipeline. The positioning frame 15 is provided with a avoiding slot, which is used to leave space for the movement of the positioning plate 19. During the process that the positioning frame 15 drives the parts thereon to approach the edge of the pipeline, when the edge of the pipeline contacts with the positioning plate 19, the edge of the pipeline extrudes the positioning plate 19, so that the positioning plate 19 drives the adjacent support plate 16 to rotate, until the support plate 16 is perpendicular to the positioning frame 15, the positioning plate 19 is parallel to the adjacent positioning frame 15, the positioning frame 15 is attached to the edge of the pipeline, and the positioning plate 19 stops driving the support plate 16 to rotate.

[0040] In example 2, on the basis of example 1, as shown in Figures 2-6 The connecting frame 1 is rotatably connected with a symmetrical double-thread rod 20, the first sliding frame 6 is threadedly connected with the adjacent double-thread rod 20, the first sliding frame 6 is slidingly connected with the adjacent sliding shell 5, and the sliding rod 8 is spline-connected with the adjacent rotating rod 7.

[0041] Further, as shown in Figures 4-6 The different sealing shells 2 are fixedly connected with evenly distributed positioning blocks 22 on the slide rails 3 close to the adjacent connecting frames 1, the positioning blocks 22 are used to determine the position of the edge of the pipeline, and all the fixed frames 11 on the same connecting frame 1 are arranged at intervals with all the positioning blocks 22 on the same slide rail 3.

[0042] The above scheme provides a way to adjust the relative position of the connecting frame 1 and the sealing shell 2 according to the gap between the two pipes; one connecting frame 1 has two bidirectional threaded rods 20 symmetrically distributed front and back, and two groups of threads symmetrically distributed left and right on the bidirectional threaded rods 20, which are used to drive the corresponding two first sliding frames 6 to move towards or away from each other. After a group of sealing shells 2 wraps the port of the pipe, the bidirectional threaded rods 20 are rotated to drive the two first sliding frames 6 on them to move away from each other, the first sliding frames 6 drive the sealing shells 2 to move synchronously, and then the right sealing shell 2 drives the parts on it to move right relative to the connecting frame 1, changing the relative position between the sealing shell 2 and the connecting frame 1, adapting to the change of the gap length between the two pipes. In this paragraph, the spline connection between the sliding rod 8 and the rotating rod 7 allows them to slide relative to each other, which is used to adapt to the length change when the sealing shell 2 moves right relative to the adjacent connecting frame 1; one sliding rail 3 has three evenly distributed positioning blocks 22, which are used to detect the edge of the pipe during the movement of the sealing shell 2 to the right. When the positioning blocks 22 come into contact with the edge of the pipe, the sealing shell 2 stops moving with the parts on it, so that the polishing roller 4 contacts the pipe with a specified length.

[0043] Further, as shown in Figures 2-6 The sealing shell 2 is fixed with an air bag 23, which is provided with evenly distributed exhaust holes near the side close to the adjacent connecting frame 1, which are used to blow the debris to move, and the air bag 23 is fixed with evenly distributed sealing strips 24.

[0044] Further, as shown in Figures 2-6 The direction of the exhaust holes on the air bag 23 is towards the axis of the connecting frame 1.

[0045] The above scheme provides a way to improve the sealing performance of the sealing shell 2 and the pipe surface; described from the position of the right part of the connecting frame 1, the inside of the right side of the sealing shell 2 is provided with an air bag 23, which is used to adapt to the shape of the pipe surface and increase the extrusion force between it and the pipe after inflation, thereby increasing the stability of the position of the sealing shell 2, when the air bag 23 is not inflated, it is located in the sealing shell 2, which is used to reduce the resistance when the sealing shell 2 moves relative to the pipe, the left side of the air bag 23 is provided with uniformly distributed exhaust holes, and the corresponding position of the sealing shell 2 is also provided with through holes, which are used to blow the fiber debris scattered during polishing to the left, facilitating the collection of the negative pressure collection module, the direction of the exhaust holes on the air bag 23 is used to make the gas discharged by it towards the surface of the polishing area of the pipe, thereby blowing up the impurities remaining on the surface of the pipe groove, the air bag 23 is connected with an air pump, after the relative movement between the sealing shell 2 and the connecting frame 1 stops, the air pump introduces gas into the air bag 23, so that the air bag 23 expands and extrudes the pipe, the inner side of the air bag 23 is provided with uniformly distributed sealing strips 24, which are made of flexible material and are used to increase the sealing performance between the air bag 23 and the pipe, to ensure that the polished fiber debris cannot be discharged from the gap between the air bag 23 and the pipe.

[0046] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A dustproof fiberglass pipe grinding equipment, characterized in that, The system includes a symmetrically distributed connecting frame (1), on which symmetrically distributed sealing shells (2) are provided. Two adjacent sealing shells (2) on different connecting frames (1) are hinged to each other. A symmetrically distributed slide rail (3) is fixed inside the sealing shell (2). An electric slider is provided inside the slide rail (3). An electric rotating shaft is provided on the electric slider of the slide rail (3) in the same sealing shell (2). A grinding roller (4) is fixed to the electric rotating shaft. A rectangularly distributed sliding shell (5) is fixed to the connecting frame (1). A first sliding frame (6) is provided inside the sliding shell (5). The sealing shell (2) is provided with symmetrically distributed arc-shaped grooves. The first sliding frame (6) is fixedly connected with a protrusion. The protrusion slides in the corresponding arc-shaped groove on the adjacent sealing shell (2). The connecting frame (1) is rotatably connected with a rotating rod (7). The rotating rod (7) is provided with a sliding rod (8). The sealing shell (2) is threadedly connected with a first threaded rod (10). The first threaded rod (10) is fixedly connected with a transmission rod (9). The transmission rod (9) is connected to the adjacent sliding rod (8) through a universal joint. An elastic membrane (21) is fixedly connected between the sealing shell (2) and the adjacent connecting frame (1). The axes corresponding to the symmetrically distributed arc grooves on the sealing shell (2) are all on the same plane as the universal joints between the adjacent transmission rod (9) and the adjacent sliding rod (8); The connecting frame (1) is fixedly connected to symmetrically distributed fixed frames (11). The fixed frames (11) are threadedly connected to a second threaded rod (12). The second threaded rod (12) is splinedly connected to a connecting rod (13). The connecting rod (13) is rotatably connected to the adjacent fixed frame (11). A gear is fixedly connected to one end of the connecting rod (13) away from the adjacent second threaded rod (12). The fixed frame (11) is slidably connected to a second sliding frame (14) that is centrally symmetrically distributed. The second sliding frame (14) is fixedly connected to a rack. The rack of the second sliding frame (14) meshes with the gear on the adjacent connecting rod (13). The second sliding frame (14) is hinged to a positioning frame (15). The positioning frame (15) is hinged to a support plate (16), and a rubber block (17) is fixed on the support plate (16). The rubber block (17) is used to adapt to the shape of the pipe. A torsion spring (18) is fixed between the positioning frame (15) and the adjacent support plate (16). A positioning plate (19) is fixedly connected to the support plate (16). The positioning plate (19) is in contact with the adjacent positioning frame (15). The positioning plate (19) is used to drive the adjacent support plate (16) to rotate. The angle between the positioning frame (15) and the adjacent support plate (16) is greater than 90° and less than 120°, and the support plate (16) is perpendicular to the adjacent positioning plate (19).

2. The dustproof fiberglass pipe grinding equipment according to claim 1, characterized in that, The connecting frame (1) is rotatably connected to symmetrically distributed bidirectional threaded rods (20), the first sliding frame (6) is threadedly connected to the adjacent bidirectional threaded rods (20), the first sliding frame (6) is slidably connected to the adjacent sliding shell (5), and the sliding rod (8) is splinedly connected to the adjacent rotating rod (7).

3. The dustproof fiberglass pipe grinding equipment according to claim 2, characterized in that, On each of the sealing shells (2) near the adjacent connecting frame (1), there are uniformly distributed positioning blocks (22). The positioning blocks (22) are used to determine the position of the pipe edge. All the fixing frames (11) on the same connecting frame (1) and all the positioning blocks (22) on the same sliding rail (3) are arranged at intervals.

4. The dustproof fiberglass pipe grinding equipment according to claim 3, characterized in that, An airbag (23) is fixedly attached to the sealing shell (2). The airbag (23) has evenly distributed exhaust holes on the side near the adjacent connecting frame (1). The exhaust holes are used to blow away debris. The airbag (23) is fixedly attached with evenly distributed sealing strips (24).

5. The dustproof fiberglass pipe grinding equipment according to claim 4, characterized in that, The direction of the exhaust port on the airbag (23) is toward the axis of the connecting frame (1).

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