Steel pipe grinding device with dustproof function

Abstract

The invention discloses a steel pipe polishing device with a dustproof function, and relates to the technical field of steel pipe inner wall polishing. After a steel pipe is in butt joint with the right end of a storage barrel, a polishing unit is driven to move left and right in the steel pipe in cooperation with air flow filling and suction control in a first air pipe and a second air pipe; meanwhile, a cavity is formed between a first air pipe and a second air pipe, a third air pipe connected with the cavity communicates with the space on the right side of the annular air bag in the steel pipe, and a spraying pipe is matched, so that a negative pressure area can be formed in the cavity during inflation; dust and chippings generated by polishing are guided and temporarily stored in the left side space of the annular air bag in the steel pipe, and are completely extracted during air extraction, so that the dust and chippings can be effectively prevented from being sprayed outwards through the two ends of the steel pipe in the polishing process, and the dustproof effect of the device during polishing machining is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe inner wall grinding, in particular to a steel pipe grinding device with dustproof function. Background Art

[0002] During the processing of precision steel pipes, in order to improve their quality, not only the outer wall needs to be polished, but usually the inner wall also needs to be polished. In the prior art, the polishing of the inner wall of the steel pipe is usually achieved by inserting a longer polishing roller into the interior of the steel pipe.

[0003] During the operation, a longer grinding roller is inserted into the steel pipe, fits against the inner wall of the steel pipe, and then the inner wall of the steel pipe is ground with the help of contact friction during relative rotation. Under this processing method, the length of the grinding roller needs to be greater than the length of the steel pipe, which makes it easy for the grinding roller to shake eccentrically when it penetrates into the steel pipe and rotates for grinding, affecting the grinding effect. In addition, the dust and debris generated by grinding are easily ejected from both ends of the steel pipe during the grinding process, which not only easily pollutes the working environment, but also easily causes harm to surrounding workers.

[0004] Therefore, a steel pipe grinding device with dustproof function is proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that when using a grinding roller to grind the inner wall of a steel pipe, the longer grinding roller is prone to shaking and eccentricity, affecting the grinding effect, and the dust and debris generated during the grinding process are prone to spray outward, affecting the surrounding working environment, and a steel pipe grinding device with dust-proof function is proposed.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: A steel pipe grinding device with dustproof function comprises a frame, a vertical plate fixedly installed on the right side of the frame, a storage cylinder arranged on the inner side of the frame fixedly installed on the vertical plate, a pneumatic push plate slidably installed in the storage cylinder, a sealing gasket fixedly covered on the right end wall of the vertical plate, a steel pipe conveying rack arranged on the right side of the frame, a grinding unit arranged on the right side of the pneumatic push plate installed in the storage cylinder, and the grinding unit comprises a cylinder movably arranged in the pneumatic push plate, a rotating cylinder is sleeved on the outer side of the cylinder, and a steel wire grinding ball arranged around is fixedly installed on the outer side of the right end of the rotating cylinder, a bracket is fixedly installed on the left end of the cylinder, and a shell fixedly connected to the bracket is sleeved on the outer side of the rotating cylinder , and an annular air bag is fixedly sleeved on the outer side of the shell, a pneumatic unit is installed in the cylinder, and the pneumatic unit includes a valve body fixedly installed on the inner end wall of the cylinder, the left and right ends of the valve body are respectively connected with a first air pipe and a second air pipe, the first air pipe movably penetrates the pneumatic push plate and the storage cylinder, and extends outside the storage cylinder, the second air pipe is fixedly connected to the left side of the cylinder, a chamber connected between the first air pipe and the second air pipe is opened in the valve body, and a nozzle directly connected to the first air pipe is fixed in the chamber, and the other end of the nozzle points to the second air pipe, and an annular suction pipe arranged on the right side of the wire grinding ball is fixedly installed on the right end of the cylinder, and a third air pipe is fixedly connected between the annular suction pipe and the chamber.

[0007] Preferably, a sealing ring movably sleeved on the outside of the first air pipe is fixedly mounted on the storage cylinder and the pneumatic push plate.

[0008] Preferably, the rotating cylinder is rotatably sleeved on the outside of the cylinder and rotatably installed on the inside of the shell, a surrounding gear ring is fixedly installed on the left end of the rotating cylinder, an auxiliary driving unit is installed on the bracket, and the auxiliary driving unit includes a swing arm installed on the bracket and expanding outward, a roller is rotatably installed on the outer end of the swing arm, a first rotating shaft is rotatably installed at the connecting position of the bracket and the swing arm, and a first transmission belt is transmission-connected between the first rotating shaft and the roller, a second rotating shaft is rotatably installed in the bracket, and a second transmission belt is transmission-connected between the second rotating shaft and the first rotating shaft, and a first gear meshing with the gear ring is fixedly installed on the second rotating shaft.

[0009] Preferably, there are two swing arms, which are symmetrically arranged up and down, and each swing arm is installed with a roller, a first rotating shaft and a first transmission belt. A second gear is fixedly installed at the end of one of the first rotating shafts, and a third gear meshing with the second gear is rotatably installed on the bracket, and a third transmission belt is connected to the third gear and the other first rotating shaft.

[0010] Preferably, a first electrically controlled three-way valve is fixedly installed in the second trachea, and the other end of the first electrically controlled three-way valve is connected to the annular airbag, the bracket is rotatably connected to the swing arm, the first rotating shaft is coaxially inserted in the rotation connection between the bracket and the swing arm, and a torsion spring is installed at the rotation connection between the bracket and the swing arm.

[0011] Preferably, the left end of the swing arm is fixedly connected to a guide rod bent toward the central axis of the storage tube.

[0012] Preferably, a wheel frame arranged on the left side of the storage cylinder is fixedly installed in the frame, and a winding wheel is rotatably installed in the wheel frame, a transfer cavity is opened at the central axis position of the winding wheel, a fourth air pipe rotatably connected to one end of the transfer cavity is fixedly installed on the wheel frame, a servo motor for driving the winding wheel to rotate is installed on the outside of the frame, two guide wheels symmetrically clamped on the outside of the first air pipe are rotatably installed in the wheel frame, and the guide wheels are arranged between the storage cylinder and the winding wheel, the first air pipe is orderly wound around the winding wheel and fixedly connected to the transfer cavity, and a spiral support is fixedly embedded in the end wall of the first air pipe.

[0013] Preferably, a second electrically controlled three-way valve is fixedly installed on the fourth air pipe, and the other end of the second electrically controlled three-way valve is connected to the left space of the pneumatic push plate in the storage tube.

[0014] Preferably, a chuck mounted on the outside of the storage tube is fixedly mounted on the right end wall of the vertical plate, a base is provided at the bottom of the frame, and a plurality of vertically arranged vertical rods are fixedly mounted on the base, the vertical rods are slidably inserted in the frame, and a straight spring is movably mounted on the outside of the vertical rods and elastically supported between the frame and the base.

[0015] Preferably, the servo motor is fixedly installed in the base, the drive shaft of the servo motor is coaxially arranged directly below the winding wheel, a vertically arranged shaft sleeve is fixedly installed at the bottom axis position of the winding wheel, and a spline shaft is slidably inserted in the shaft sleeve, and the spline shaft is fixedly connected to the drive shaft of the servo motor.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, after the steel pipe is docked with the right end of the storage tube, the grinding unit is pushed into the steel pipe by the pneumatic push plate, and the inside of the steel pipe is tightly filled with the annular airbag to divide the inside of the steel pipe into two relatively independent spaces on the left and right. The airflow filling and suction control in the first air pipe and the second air pipe can drive the grinding unit to move left and right in the steel pipe to achieve the grinding of the inner wall of the steel pipe. There is no need to use an overly long grinding roller, which is conducive to improving the high efficiency and stability of the grinding of the inner wall of the steel pipe. At the same time, by opening the chamber between the first air pipe and the second air pipe The high-speed airflow ejected from the first air pipe is directly injected into the second air pipe through the nozzle, and the third air pipe connected to the chamber is connected to the right space of the annular airbag inside the steel pipe, so that when the first air pipe is inflated, a negative pressure area can be formed in the chamber, and the dust and debris generated by grinding are temporarily stored in the left space of the annular airbag inside the steel pipe. When the air is evacuated in the first air pipe, all the dust and debris generated by grinding are extracted, which can effectively prevent the dust and debris from being ejected outward through both ends of the steel pipe during the grinding process, which is conducive to improving the dust prevention effect of the device during grinding processing; 2. In the present invention, the outward-expanding swing arm is symmetrically arranged on the bracket, and the roller is rotatably installed at the end of the swing arm. With the transmission connection of the first transmission belt and the second transmission belt, the second rotating shaft can drive the first gear to rotate. With the meshing of the first gear and the gear ring, the rotating cylinder can be driven to drive the wire grinding ball to rotate. In the process of the wire grinding ball moving to grind the inner wall of the steel pipe, the wire grinding ball is driven to rotate to grind the inner wall of the steel pipe more finely, which is conducive to improving the effect of the staff using the device to grind the inner wall of the steel pipe; 3. In the present invention, the annular airbag is connected to the second air pipe through the first electrically controlled three-way valve, so that the staff can inflate the annular airbag through the air pump, and the annular airbag can be adapted to be filled in steel pipes with different inner diameters through inflation and expansion adjustment. At the same time, by rotatably connecting the swing arm with the bracket and installing the torsion spring at the rotation connection between the swing arm and the bracket, the swing arm always maintains a tendency to expand outward with the elastic support of the torsion spring, so that the roller rotatably installed at the end of the swing arm can adaptively fit the inner wall of the steel pipe with different inner diameters, which improves the application range of the device to a certain extent; 4. In the present invention, by installing a rotatable winding wheel on the left side of the storage tube, it can be used to orderly wind up and release the first air pipe, so that the winding and releasing of the first air pipe are coordinated with the movement of the grinding assembly. At the same time, by opening a transfer cavity connected to the first air pipe at the central axis position in the winding wheel, and fixing the fourth air pipe rotatably connected to the transfer cavity on the wheel frame, the winding and releasing of the first air pipe by the winding wheel will not affect the airflow in the first air pipe, which is beneficial to ensure the stability of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a stereoscopic view of the present invention from the left side perspective; Figure 2 It is a stereoscopic view of the present invention from the right side viewing angle; Figure 3 A three-dimensional diagram of a grinding unit and an auxiliary driving unit of the present invention; Figure 4 For the present invention Figure 3 Split diagram of the structure in the middle; Figure 5 For the present invention Figure 3 Right view of the middle structure; Figure 6 For the present invention Figure 5 Sectional view at AA in the middle; Figure 7 It is a front cross-sectional view of the grinding unit of the present invention in the storage tube; Figure 8 For the present invention Figure 7 The enlarged view of point B in the middle; Fig. 9 It is a front cross-sectional view of the grinding unit of the present invention in a steel pipe; Fig.10 For the present invention Fig. 9 Enlarged view of point C in the middle.

[0018] Serial number in the picture: 1. Frame; 101. Vertical plate; 102. Storage tube; 103. Pneumatic push plate; 104. Sealing ring; 105. Sealing pad; 106. Steel pipe conveying rack; 2. Cylinder; 201. Rotating cylinder; 202. Steel wire grinding ball; 203. Bracket; 204. Shell; 205. Annular airbag; 3. Valve body; 301. First air pipe; 302. Second air pipe; 303. Chamber; 304. Nozzle; 305. Annular suction pipe; 306. Third air pipe; 307. First electric-controlled three-way valve; 308. Gear ring; 4. Swing arm; 401. Roller; 402. First rotating shaft; 403. First transmission belt; 404. Second rotating shaft; 405. Second transmission belt; 406. First gear; 407. Second gear; 408. Third gear; 409. Third transmission belt; 5. Torsion spring; 501. Guide rod; 6. Wheel frame; 601. Winding wheel; 602. Transfer chamber; 603. Fourth air pipe; 604. Second electric-controlled three-way valve; 605. Servo motor; 606. Guide wheel; 7. Chuck; 701. Base; 702. Vertical rod; 703. Straight spring; 704. Bushing; 705. Spline shaft. DETAILED DESCRIPTION

[0019] 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.

[0020] Embodiment: This embodiment provides a steel pipe grinding device with dustproof function, see Figure 1 - Fig.10Specifically, it includes a frame 1, a vertically arranged riser 101 is fixedly installed on the right side of the frame 1, and a storage cylinder 102 arranged on the inner side of the frame 1 is fixedly installed on the riser 101, a pneumatic push plate 103 is slidably installed in the storage cylinder 102, and a sealing gasket 105 is fixedly covered on the right end wall of the riser 101, a steel pipe conveying rack 106 is arranged on the right side of the frame 1, a grinding unit arranged on the right side of the pneumatic push plate 103 is installed in the storage cylinder 102, and the grinding unit includes a cylinder 2 movably arranged in the pneumatic push plate 103, a rotating cylinder 201 is sleeved on the outer side of the cylinder 2, and a surrounding steel wire grinding ball 202 is fixedly installed on the outer side of the right end of the rotating cylinder 201, a bracket 203 is fixedly installed on the left end of the cylinder 2, and a shell 204 fixedly connected to the bracket 203 is sleeved on the outer side of the rotating cylinder 201, and the outer side of the shell 204 is fixed An annular air bag 205 is fixedly connected, a pneumatic unit is installed in the cylinder 2, and the pneumatic unit includes a valve body 3 fixedly installed on the inner end wall of the cylinder 2, and the left and right ends of the valve body 3 are respectively connected with a first air pipe 301 and a second air pipe 302, the first air pipe 301 movably passes through the pneumatic push plate 103 and the storage cylinder 102, and extends outside the storage cylinder 102, the second air pipe 302 is fixedly connected to the left side of the cylinder 2, a chamber 303 connected between the first air pipe 301 and the second air pipe 302 is opened in the valve body 3, and a nozzle 304 directly connected to the first air pipe 301 is fixed in the chamber 303, and the other end of the nozzle 304 points to the second air pipe 302, an annular suction pipe 305 arranged on the right side of the wire grinding ball 202 is fixedly installed on the right end of the cylinder 2, and a third air pipe 306 is fixedly connected between the annular suction pipe 305 and the chamber 303.

[0021] When the device is in use, the steel pipe conveying frame 106 installed on the right side of the frame 1 can be used to convey the steel pipe. Under the conveyance of the steel pipe conveying frame 106, the left end of the steel pipe is tightly fitted on the right end wall of the vertical plate 101, and the sealing gasket 105 is deformed and filled in the gap between the right end wall of the vertical plate 101 and the left end of the steel pipe by extrusion, thereby ensuring the tightness of the connection between the right end wall of the vertical plate 101 and the left end of the steel pipe. At this time, the left end of the steel pipe is aligned and connected with the right end of the storage tube 102, and then the staff can control the pneumatic push plate 103 to move to the right in the storage tube 102 to push the grinding unit in the storage tube 102 into the steel pipe. When the grinding unit moves into the steel pipe, the outer side of the steel wire grinding ball 202 is tightly fitted with the inner wall of the steel pipe, and the annular airbag 205 is tightly filled in the steel pipe. Under the sealing of the annular airbag 205, the annular airbag in the steel pipe The left and right spaces of 205 are independent of each other. The first air pipe 301 is connected to an external air pump. After the air pump is powered on, the first air pipe 301 can be used for inflation. The airflow is ejected into the second air pipe 302 at high speed through the nozzle 304 connected to the first air pipe 301, and is continuously filled into the left space of the annular airbag 205 in the steel pipe through the second air pipe 302. With the continuous filling of the airflow, the gas in the left space of the annular airbag 205 in the steel pipe gradually increases. Under the impetus of the gas filling, the grinding unit is driven to move right in the steel pipe. The faster the airflow is filled, the faster the grinding unit moves to the right. When the grinding unit moves to the right in the steel pipe due to the impetus of the airflow, the steel wire grinding ball 202 can be driven to move right in the steel pipe. The inner wall of the steel pipe can be polished by the friction between the steel wire grinding ball 202 and the inner wall of the steel pipe.

[0022] When the airflow flows from the first air pipe 301 to the second air pipe 302, the high-speed airflow will pass through the nozzle 304 and flow through the chamber 303. The inner diameter of the chamber 303 is much larger than the inner diameter of the nozzle 304. With the help of the Bernoulli effect, a negative pressure area can be formed in the chamber 303, so that the gas in the right side space of the annular airbag 205 inside the steel pipe can enter the chamber 303 through the connection between the annular suction pipe 305 and the third air pipe 306, and finally be sprayed into the left side space of the annular airbag 205 inside the steel pipe through the second air pipe 302. In this process, the dust and debris generated by the steel wire grinding ball 202 grinding the inner wall of the steel pipe enters the annular suction pipe 305 through the holes opened around the outer end wall of the annular suction pipe 305 under the entrainment of the airflow, and then enters the chamber 303 through the connection of the third air pipe 306, and finally is transported to the left side space of the annular airbag 205 inside the steel pipe through the second air pipe 302.

[0023] When the grinding unit moves to the right position in the steel pipe, the staff changes the action state of the air pump on the airflow in the first air pipe 301, changing inflation to exhaustion. At this time, the gas in the right space of the annular airbag 205 inside the steel pipe enters the chamber 303 through the connection of the third air pipe 306, and is then extracted through the first air pipe 301, while the gas in the left space of the annular airbag 205 inside the steel pipe enters the chamber 303 through the second air pipe 302, and is extracted by the first air pipe 301 through the connection between the nozzle 304 and the first air pipe 301. During the above-mentioned exhaust process, the gas in the left space of the annular airbag 205 inside the steel pipe is rapidly reduced. Under the action of negative pressure, the grinding unit moves from right to left in the steel pipe. During this process, the dust and debris generated by grinding in the spaces on the left and right sides of the annular airbag 205 inside the steel pipe are sucked into the first air pipe 301 by the airflow and are finally collected.

[0024] The above operation is performed reciprocatingly, driving the single-sided unit to move back and forth left and right in the steel pipe, thereby achieving fine grinding of the inner wall of the steel pipe, and through the changes in airflow filling and extraction, the dust generated when the wire grinding ball 202 moves to the right for grinding is first collected in the relatively closed space on the left side of the annular airbag 205 in the steel pipe, and then when the wire grinding ball 202 moves to the left, the collected dust and the dust generated by grinding are extracted together, making the grinding of the inner wall of the steel pipe efficient and convenient, and can effectively realize dust prevention during the grinding process, thereby ensuring the stability of the grinding process of the inner wall of the steel pipe.

[0025] In the specific implementation process, Figure 7 and Fig. 9 As shown, a sealing ring 104 movably mounted on the outside of the first air pipe 301 is fixedly installed on the storage cylinder 102 and the pneumatic push plate 103. When the device is in use, the outer size of the pneumatic push plate 103 is adapted to the inner size of the storage cylinder 102. The rightward movement of the pneumatic push plate 103 is used to push the grinding unit out of the storage cylinder 102 and into the steel pipe. The sealing ring 104 is installed on the storage cylinder 102 and the pneumatic push plate 103, and is used for the hole through which the first air pipe 301 is movably inserted. With the help of the elastic deformation filling of the sealing ring 104, the sealing of the environment inside the storage cylinder 102 can be guaranteed during the movement of the first air pipe 301, so that the device can control the left and right movement of the steel wire grinding ball 202 to grind the stability of the inner end wall of the steel pipe through airflow filling and extraction.

[0026] In the specific implementation process, Figure 3 and Figure 4As shown, the rotating cylinder 201 is rotatably sleeved on the outer side of the cylinder 2 and rotatably installed on the inner side of the shell 204. A toothed ring 308 is fixedly installed on the left end of the rotating cylinder 201. An auxiliary driving unit is installed on the bracket 203, and the auxiliary driving unit includes a swing arm 4 installed on the bracket 203 and expanding outward. A roller 401 is rotatably installed on the outer end of the swing arm 4. A first rotating shaft 402 is rotatably installed at the connecting position of the bracket 203 and the swing arm 4, and a first transmission belt 403 is connected between the first rotating shaft 402 and the roller 401. A second rotating shaft 404 is rotatably installed in the bracket 203, and a second transmission belt 405 is connected between the second rotating shaft 404 and the first rotating shaft 402. A roller 401 is fixedly installed on the second rotating shaft 404. 08 meshing first gear 406. When the device is in use, the roller 401 fits tightly against the inner end wall of the steel pipe. When the grinding unit moves left and right in the steel pipe, the roller 401 is driven to rotate by means of the contact friction between the roller 401 and the inner wall of the steel pipe. The second rotating shaft 404 drives the first gear 406 to rotate by means of the transmission connection between the first transmission belt 403 and the second transmission belt 405. Subsequently, the rotating cylinder 201 drives the steel wire grinding ball 202 to rotate by means of the meshing of the first gear 406 and the gear ring 308. In the process of the steel wire grinding ball 202 moving to grind the inner wall of the steel pipe, the steel wire grinding ball 202 can also be driven to rotate to perform more refined grinding on the inner wall of the steel pipe, which is beneficial to improving the effect of the staff using the device to grind the inner wall of the steel pipe.

[0027] In the specific implementation process, Figure 3 - Figure 4 , Figure 8 and Fig.10As shown, there are two swing arms 4, which are symmetrically arranged up and down, and each swing arm 4 is installed with a roller 401, a first rotating shaft 402 and a first transmission belt 403, wherein a second gear 407 is fixedly installed at the end of one of the first rotating shafts 402, and a third gear 408 meshing with the second gear 407 is rotatably installed on the bracket 203, and a third transmission belt 409 is transmission-connected between the third gear 408 and the other first rotating shaft 402. When the device is used, the two swing arms 4 expand outward synchronously, and two symmetrical rollers 401 can be arranged in the steel pipe, and the two rollers 401 roll and fit on the inner end walls on both sides symmetrically in the steel pipe, and cooperate with the annular airbag 205 filled in the steel pipe, so as to provide stability for the left and right movement of the grinding unit. The support ensures the stability of the grinding unit moving in the steel pipe for grinding processing. After the two rollers 401 are driven to rotate during the movement, the rotational power will be transmitted to the corresponding first rotating shaft 402 through the transmission connection of their respective first transmission belts 403. Since the two rollers 401 are symmetrically arranged up and down, the directions of the power generated by the two rollers 401 being driven to rotate are opposite. At this time, with the help of the meshing reversing of the second gear 407 and the third gear 408, the rotational power provided by the two rollers 401 can be integrated and transmitted to the second rotating shaft 404 together. With the help of the two rollers 401, the rotation of the wire grinding ball 202 is powered together, which can effectively improve the stability of the rotational grinding of the wire grinding ball 202 during the movement of the grinding unit.

[0028] In the specific implementation process, Figure 8 and Fig.10As shown, a first electrically controlled three-way valve 307 is fixedly installed in the second air pipe 302, and the other end of the first electrically controlled three-way valve 307 is communicated with the annular airbag 205, the bracket 203 is rotatably connected to the swing arm 4, the first rotating shaft 402 is coaxially inserted in the rotation connection between the bracket 203 and the swing arm 4, a torsion spring 5 is installed at the rotation connection between the bracket 203 and the swing arm 4, and a guide rod 501 bent toward the central axis of the storage tube 102 is fixedly connected to the left end of the swing arm 4. When the device is used, the annular airbag 205 is communicated with the second air pipe 302 through the first electrically controlled three-way valve 307, so that the staff can inflate the annular airbag 205 through the air pump, and by means of inflation and expansion, the annular airbag 205 is tightly filled in the steel pipe, so that the annular airbag 205 can be suitable for steel pipes with different inner diameters after inflation adjustment. At the same time, by adjusting the swing arm 4 It is rotatably connected to the bracket 203, and the torsion spring 5 is installed at the rotatable connection between the swing arm 4 and the bracket 203. With the elastic support of the torsion spring 5, the swing arm 4 always maintains a tendency to expand outward, so that the roller 401 rotatably installed at the end of the swing arm 4 can adaptively fit the inner wall of the steel pipe with different inner diameters, so that the device can adapt to the inner wall of the steel pipe with different inner diameters when grinding. By fixing the guide rod 501 bent toward the central axis direction of the storage tube 102 on the left end of the swing arm 4, when the grinding unit is recovered after grinding, the left end of the guide rod 501 can first enter the storage tube 102 during the left movement. With the guidance of the guide rod 501, the swing arm 4 that expands outward can gather toward the central axis direction of the storage tube 102, which is conducive to ensuring the stability and convenience of the device in recovering the grinding unit into the storage tube 102.

[0029] In the specific implementation process, Figure 1 , Figure 7 and Fig. 9 As shown, a wheel frame 6 arranged on the left side of the storage cylinder 102 is fixedly installed in the frame 1, and a winding wheel 601 is rotatably installed in the wheel frame 6, a transfer cavity 602 is opened at the central axis position of the winding wheel 601, and a fourth air pipe 603 rotatably connected to one end of the transfer cavity 602 is fixedly installed on the wheel frame 6, and a servo motor 605 for driving the winding wheel 601 to rotate is installed on the outside of the frame 1, and two guide wheels 606 symmetrically clamped on the outside of the first air pipe 301 are rotatably installed in the wheel frame 6, and the guide wheels 606 are arranged between the storage cylinder 102 and the winding wheel 601, the first air pipe 301 is orderly wound around the winding wheel 601, and is fixedly connected to the transfer cavity 602, and a spiral support is fixedly embedded in the end wall of the first air pipe 301.

[0030] When the device is in use, the staff can control the servo motor 605 to power on and start it. After the servo motor 605 is powered on and started, it will drive the winding wheel 601 connected to its drive shaft to rotate. By controlling the rotation direction of the winding wheel 601, the winding and releasing of the first air pipe 301 wrapped around its outside can be achieved. When the first air pipe 301 is inflated, the grinding unit moves to the right in the steel pipe. At this time, the winding wheel 601 rotates to release the first air pipe 301 wound on its outside. When the first air pipe 301 is deflating, the grinding unit moves to the left in the steel pipe. At this time, the winding wheel 601 rotates in the opposite direction to rewind the first air pipe 301 on the winding wheel 601. The rotation of the winding wheel 601 and the reciprocating movement of the grinding unit are coordinated to ensure the stability of the device during operation.

[0031] The fourth air pipe 603 is connected to an external air pump, and the airflow is connected through the fourth air pipe 603, the adapter cavity 602 and the first air pipe 301. With the help of the rotating connection between the adapter cavity 602 and the fourth air pipe 603, the airflow flow can be prevented from being affected by the rotation of the winding wheel 601. A spiral support is provided in the end wall of the first air pipe 301, which makes the first air pipe 301 have a movable structural strength, thereby preventing the first air pipe 301 from being squeezed and collapsed when being wound on the winding wheel 601.

[0032] A dust collecting unit is installed between the air pump and the fourth air pipe 603, and the dust collecting unit is composed of a dust collecting box, a one-way valve plate and a filter plate. A filter plate is installed between the dust collecting box and the suction pump, and a one-way valve plate is installed between the dust collecting box and the fourth air pipe 603. The one-way valve plate is normally closed under the elastic support of the torsion spring, and can only be rotated to one side of the dust collecting box to open after being stressed. A filter element is embedded in the one-way valve plate. When it is necessary to inflate the first air pipe 301 and the fourth air pipe 603, the one-way valve plate is in a closed state. At this time, the airflow is blown out from the air pump, passes through the filter plate, the dust collecting box, the filter element in turn, and then enters the fourth air pipe Tube 603. During this process, the dust and debris collected in the dust box cannot pass through the filter element into the fourth air pipe 603. When it is necessary to draw air into the first air pipe 301 and the fourth air pipe 603, the airflow passes through the filter element, the dust box, the filter plate in turn, and then enters the air pump. During this process, the dust and debris generated by the grinding unit is covered on the filter element on the one-way valve plate under the influence of the airflow, making the airflow suction unsmooth. Under the action of air pressure, the one-way valve plate will rotate open, and the sucked dust and debris will pass through the opened one-way valve plate into the dust box, completing the collection of the dust and debris.

[0033] In the specific implementation process, Figure 7 and Fig. 9As shown, a second electrically-controlled three-way valve 604 is fixedly installed on the fourth air pipe 603, and the other end of the second electrically-controlled three-way valve 604 is connected to the left space of the pneumatic push plate 103 in the storage tube 102. When the device is in use, the staff can change the air supply direction of the fourth air pipe 603 through the second electrically-controlled three-way valve 604, and fill the airflow into the left space of the pneumatic push plate 103 in the storage tube 102. Under the impetus of the airflow, the pneumatic push plate 103 can be driven to move right in the storage tube 102, so as to realize the operation of pushing the grinding unit into the steel pipe by moving the pneumatic push plate 103 to the right. Through airflow control, the operation is flexible and convenient.

[0034] In the specific implementation process, Figure 1 - Figure 2 and Figure 7 As shown, a chuck 7 sleeved on the outside of the storage tube 102 is fixedly installed on the right end wall of the vertical plate 101, a base 701 is provided at the bottom of the frame 1, and a plurality of vertically arranged vertical rods 702 are fixedly installed on the base 701, the vertical rods 702 are slidably inserted in the frame 1, and the outer movable sleeves of the vertical rods 702 are provided with straight springs 703 elastically supported between the frame 1 and the base 701, the servo motor 605 is fixedly installed in the base 701, and the driving shaft of the servo motor 605 is coaxially arranged directly below the winding wheel 601, and a vertically arranged shaft sleeve 704 is fixedly installed at the bottom axis position of the winding wheel 601, and a spline shaft 705 is slidably inserted in the shaft sleeve 704, and the spline shaft 705 is fixedly connected to the driving shaft of the servo motor 605.

[0035] When the device is in use, when the steel pipe is aligned on the right side of the vertical plate 101 under the transportation of the steel pipe conveying frame 106, the chuck 7 installed on the right end wall of the vertical plate 101 is started, which can apply a clamping force to the steel pipe, firmly connect the left end of the steel pipe with the right end of the storage cylinder 102, and the left end of the steel pipe will be coaxially aligned with the right end of the storage cylinder 102, ensuring the stability of the grinding unit entering the steel pipe from the storage cylinder 102. When the inner diameter of the steel pipe is large, the distance between the central axis of the steel pipe and the steel pipe conveying frame 106 increases, resulting in the storage cylinder 102 in the initial state not being coaxial with the left end of the steel pipe. The frame 1 is slidably installed on the vertical rod 702 and is elastically supported by the straight spring 703. Under the correction provided by the clamping of the chuck 7, the frame 1 connected to the left end of the steel pipe will be fine-tuned upward under the support of the steel pipe to ensure the stability of the coaxial connection between the right end of the storage tube 102 and the left end of the steel pipe. The servo motor 605 is fixed on the base 701, and the servo motor 605 drives the winding wheel 601 through the sliding connection of the shaft sleeve 704 and the spline shaft 705, which can reduce the total mass of the structure on the frame 1 and ensure the stability of the winding wheel 601 being driven to rotate during the up and down fine-tuning of the frame 1.

[0036] Specifically, the working principle and operation method of the present invention are as follows: The steel pipe is transported to the right side of the vertical plate 101 through the steel pipe transport rack 106, and with the help of the clamping of the chuck 7, the left end of the steel pipe is coaxially connected with the right end of the storage tube 102, and under the elastic filling of the sealing gasket 105, the storage tube 102 is sealed and connected to the steel pipe, and the fourth air pipe 603 is inflated by an external air pump, and the second electrically controlled three-way valve 604 is used to adjust the inflation, and the air is introduced into the left space of the pneumatic push plate 103 in the storage tube 102. With the continuous filling of the airflow, the pneumatic push plate 103 moves to the right, pushing the grinding unit into the steel pipe, and then the second electrically controlled three-way valve 604 is used to adjust the airflow so that the airflow passes through the fourth air pipe 603 into the transfer chamber 602, and then enters the first air pipe 301, and the first The airflow in the air pipe 301 is injected into the second air pipe 302 at high speed through the nozzle 304. The airflow is filled into the annular airbag 205 through the regulation of the first electrically controlled three-way valve 307. After the annular airbag 205 is inflated, it is tightly filled inside the steel pipe. The airflow in the second air pipe 302 is filled into the left space of the annular airbag 205 in the steel pipe through the regulation of the first electrically controlled three-way valve 307. With the continuous filling of the airflow, the grinding unit is pushed to move rightward in the steel pipe, and the steel wire grinding ball 202 contacts and rubs against the inner wall of the steel pipe to grind the inner wall of the steel pipe. During the rightward movement of the grinding unit, the servo motor 605 is started synchronously to control the winding wheel 601 to rotate, and the first air pipe 301 wound thereon is released in an orderly manner. When the grinding unit moves to the right side of the steel pipe, the pump converts the inflation into the exhaust. At this time, the gas in the left space of the annular airbag 205 inside the steel pipe is extracted, driving the grinding unit to move leftward in the steel pipe. During the leftward movement of the grinding unit, the servo motor 605 drives in the reverse direction to control the reel 601 to rotate in the reverse direction, and the first air pipe 301 is reeled in an orderly manner. When the device inflates the first air pipe 301, a negative pressure area is formed in the chamber 303 during the process of the airflow being ejected toward the second air pipe 302 through the nozzle 304, so that the dust and debris generated by the grinding of the wire grinding ball 202 enters the chamber 303 through the connection between the annular suction pipe 305 and the third air pipe 306, and is then temporarily transported to the left space of the annular airbag 205 inside the steel pipe through the second air pipe 302. When air is pumped into the first air pipe 301, the dust and debris generated by the grinding of the wire grinding ball 202 and the dust and debris temporarily stored in the left space of the annular airbag 205 inside the steel pipe are respectively sucked into the chamber 303 through the second air pipe 302 and the third air pipe 306, and finally extracted through the first air pipe 301. After the grinding unit enters the steel pipe, with the elastic support of the torsion spring 5, the swing arm 4 will expand outward, so that the roller 401 is closely fitted with the inner wall of the steel pipe. When the grinding unit moves, the inner wall of the steel pipe contacts the roller 401, driving the roller 401 to rotate, and through the transmission of the first transmission belt 403 and the second transmission belt 405, the second transmission belt 405 drives the first gear 406 to rotate, and with the engagement of the first gear 406 and the gear ring 308, the rotating cylinder 201 drives the steel wire grinding ball 202 to rotate, thereby improving the effect of grinding the inner wall of the steel pipe during the movement of the steel wire grinding ball 202. After the grinding is completed, the grinding unit is on the left side of the steel pipe. At this time, with the traction provided by the winding wheel 601 to wind up the first air pipe 301, and the guidance provided by the guide rod 501, the grinding unit can be put back into the storage cylinder 102.

[0037] The above are only preferred specific implementation modes 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 solutions and inventive concepts 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. A steel pipe grinding device with dustproof function, comprising a frame (1), characterized in that: A vertically arranged vertical plate (101) is fixedly installed on the right side of the frame (1), and a storage tube (102) arranged on the inner side of the frame (1) is fixedly installed on the vertical plate (101), a pneumatic push plate (103) is slidably installed in the storage tube (102), a sealing gasket (105) is fixedly covered on the right end wall of the vertical plate (101), a steel pipe conveying rack (106) is arranged on the right side of the frame (1), and a punching device (106) arranged on the right side of the pneumatic push plate (103) is installed in the storage tube (102). The grinding unit comprises a cylinder (2) movably arranged in a pneumatic push plate (103), a rotating cylinder (201) is sleeved on the outer side of the cylinder (2), and a steel wire grinding ball (202) arranged around the right end of the rotating cylinder (201) is fixedly installed on the outer side, a bracket (203) is fixedly installed on the left end of the cylinder (2), a shell (204) fixedly connected to the bracket (203) is sleeved on the outer side of the rotating cylinder (201), and an annular airbag is fixedly sleeved on the outer side of the shell (204) (205), a pneumatic unit is installed in the cylinder (2), and the pneumatic unit includes a valve body (3) fixedly installed on the inner end wall of the cylinder (2), the left and right ends of the valve body (3) are respectively connected to a first air pipe (301) and a second air pipe (302), the first air pipe (301) movably passes through the pneumatic push plate (103) and the storage cylinder (102), and extends outside the storage cylinder (102), the second air pipe (302) is fixedly connected to the left side of the cylinder (2), and the valve body (3) is provided with a first air pipe (301) and a second air pipe (302). There is a chamber (303) connected between the first air pipe (301) and the second air pipe (302), and a nozzle (304) directly connected to the first air pipe (301) is fixed in the chamber (303), and the other end of the nozzle (304) points to the second air pipe (302). An annular suction pipe (305) arranged on the right side of the steel wire grinding ball (202) is fixedly installed at the right end of the cylinder (2), and a third air pipe (306) is fixedly connected between the annular suction pipe (305) and the chamber (303).

2. A steel pipe grinding device with dustproof function according to claim 1, characterized in that: A sealing ring (104) movably sleeved on the outside of the first air pipe (301) is fixedly mounted on the storage cylinder (102) and the pneumatic push plate (103).

3. The steel pipe grinding device with dustproof function according to claim 1, characterized in that: The rotating cylinder (201) is rotatably sleeved on the outer side of the cylinder (2) and rotatably mounted on the inner side of the outer shell (204); a toothed ring (308) is fixedly mounted on the left end of the rotating cylinder (201); an auxiliary driving unit is mounted on the bracket (203); the auxiliary driving unit comprises a swing arm (4) mounted on the bracket (203) and extending outward; a roller (401) is rotatably mounted on the outer end of the swing arm (4); a first rotating shaft (402) is rotatably mounted at the connection position between the bracket (203) and the swing arm (4); a first transmission belt (403) is transmission-connected between the first rotating shaft (402) and the roller (401); a second rotating shaft (404) is rotatably mounted in the bracket (203); a second transmission belt (405) is transmission-connected between the second rotating shaft (404) and the first rotating shaft (402); and a first gear (406) meshing with the toothed ring (308) is fixedly mounted on the second rotating shaft (404).

4. The steel pipe grinding device with dustproof function according to claim 3, characterized in that: There are two swing arms (4) in total, and the two swing arms (4) are symmetrically arranged up and down. Each of the swing arms (4) is mounted with a roller (401), a first rotating shaft (402) and a first transmission belt (403). A second gear (407) is fixedly mounted at the end of one of the first rotating shafts (402). A third gear (408) meshing with the second gear (407) is rotatably mounted on the bracket (203), and a third transmission belt (409) is transmission-connected between the third gear (408) and the other first rotating shaft (402).

5. The steel pipe grinding device with dustproof function according to claim 4, characterized in that: A first electrically controlled three-way valve (307) is fixedly installed in the second air pipe (302), and the other end of the first electrically controlled three-way valve (307) is in communication with the annular airbag (205). The bracket (203) is rotationally connected to the swing arm (4), and the first rotating shaft (402) is coaxially inserted in the rotational connection between the bracket (203) and the swing arm (4). A torsion spring (5) is installed at the rotational connection between the bracket (203) and the swing arm (4).

6. The steel pipe grinding device with dustproof function according to claim 5, characterized in that: The left end of the swing arm (4) is fixedly connected to a guide rod (501) bent towards the central axis of the storage cylinder (102).

7. The steel pipe grinding device with dustproof function according to claim 1, characterized in that: A wheel frame (6) arranged on the left side of the storage cylinder (102) is fixedly installed in the frame (1), and a winding wheel (601) is rotatably installed in the wheel frame (6). A transfer cavity (602) is opened at the central axis position of the winding wheel (601). A fourth air pipe (603) rotatably connected to one end of the transfer cavity (602) is fixedly installed on the wheel frame (6). A servo motor (605) for driving the winding wheel (601) to rotate is installed on the outer side of the frame (1). Two guide wheels (606) symmetrically clamped on the outer side of the first air pipe (301) are rotatably installed in the wheel frame (6), and the guide wheels (606) are arranged between the storage cylinder (102) and the winding wheel (601). The first air pipe (301) is orderly wound around the winding wheel (601) and is fixedly connected to the transfer cavity (602). A spiral support is fixedly embedded in the end wall of the first air pipe (301).

8. The steel pipe grinding device with dustproof function according to claim 7, characterized in that: A second electrically controlled three-way valve (604) is fixedly mounted on the fourth air pipe (603), and the other end of the second electrically controlled three-way valve (604) is in communication with the left side space of the pneumatic push plate (103) in the storage cylinder (102).

9. The steel pipe grinding device with dustproof function according to claim 7, characterized in that: A chuck (7) sleeved on the outside of the storage tube (102) is fixedly mounted on the right end wall of the vertical plate (101); a base (701) is provided at the bottom of the frame (1), and a plurality of vertically arranged vertical rods (702) are fixedly mounted on the base (701); the vertical rods (702) are slidably inserted in the frame (1); and a straight spring (703) elastically supported between the frame (1) and the base (701) is movably sleeved on the outside of the vertical rods (702).

10. The steel pipe grinding device with dustproof function according to claim 9, characterized in that: The servo motor (605) is fixedly installed in the base (701), and the driving shaft of the servo motor (605) is coaxially arranged directly below the winding wheel (601). A vertically arranged shaft sleeve (704) is fixedly installed at the bottom axis position of the winding wheel (601), and a spline shaft (705) is slidably inserted in the shaft sleeve (704). The spline shaft (705) is fixedly connected to the driving shaft of the servo motor (605).

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