A polishing device for a connecting pipe capable of embedding a rubber ring

Abstract

This invention relates to the field of connecting pipe processing technology, specifically to a polishing device for connecting pipes capable of embedding rubber rings, comprising a clamping unit and an inner wall polishing unit. The clamping unit vertically clamps the connecting pipe, and the inner wall polishing unit slides vertically against the inner wall of the connecting pipe. The inner wall polishing unit includes a water spray head and a polishing assembly, arranged vertically from top to bottom. When polishing the inner wall of the connecting pipe, the inner wall polishing unit moves vertically from bottom to top into the connecting pipe. The polishing assembly has a rotation axis in the vertical direction when polishing the inner wall of the connecting pipe. The water spray head rotates synchronously with the polishing assembly, and the spray direction of the water spray head is always parallel to the radial direction of the connecting pipe. This invention avoids the occurrence of metal debris residue in the annular groove and also avoids dry grinding, extending the service life of the polishing assembly.

Description

Technical Field

[0001] This invention relates to the field of connecting pipe processing technology, specifically to a polishing device for connecting pipes capable of embedding rubber rings. Background Technology

[0002] During the processing of general metal connecting pipes, most of the time the metal connecting pipes are placed against the grinding belt by a robotic arm. However, the grinding belt usually grinds only one part of the outer wall of the metal connecting pipe, so the robotic arm is needed to drive the metal connecting pipe to rotate and move accordingly, which affects the grinding efficiency. In addition, the robotic arm has a complex structure and high procurement cost.

[0003] Chinese Patent Publication No. CN113305660A discloses a machining tool for processing and forming metal connecting pipes for automotive air conditioning systems. The tool includes a base, a support unit, and a grinding unit. The support unit is located on the upper end of the base, and the grinding unit is installed inside the support unit. The support unit includes a support plate, a telescopic column, a limiting plate, a support plate, and a fixing component. The support plate is symmetrically mounted on the upper end of the base. The upper side of the support plate has rotating grooves spaced evenly from front to back, and a transmission groove communicating with the lower end of each rotating groove. The telescopic column is rotatably mounted on the rotating groove of the support plate. A limiting plate that slides and connects to the outer wall of the support plate is located on the opposite side of the telescopic column. A support plate is hinged to the opposite side of the telescopic column. The support plate has a linkage groove inside, and a first annular groove is located at the upper end of the linkage groove. The fixing component is located on the upper end of the support plate.

[0004] The aforementioned solution uses a rotating mechanism to grind the outer wall of the metal connecting pipe, but it cannot grind the inner wall. While existing equipment exists that can grind the inner wall, it's important to note that grinding the inner wall generates metal shavings, and most such equipment lacks a shavings removal function. Current methods involve using a fan to blow away any remaining shavings after grinding. Furthermore, to improve the sealing of the metal connecting pipe during connection, some existing pipes have annular grooves on their inner walls for placing the sealing ring. During grinding, a large amount of metal shavings accumulates in these grooves. Due to the concave nature of these grooves, it's difficult to completely remove all remaining shavings when using a fan after grinding, leading to difficulties in installing the sealing ring and potential damage to it during subsequent use. Summary of the Invention

[0005] To address the aforementioned issues, a polishing device for connecting pipes capable of embedding rubber rings is provided. The device vertically positions the connecting pipe and uses a clamping unit to move it vertically. Simultaneously, an inner wall polishing unit is positioned below the connecting pipe. This allows the connecting pipe to be first wetted by a water spray head as it descends vertically. The wetted inner wall then passes through the polishing assembly. This polishing assembly prevents dry grinding of the wetted inner wall. Furthermore, the water sprayed onto the inner wall of the connecting pipe flows downwards under gravity, inevitably passing through the connection between the polishing assembly and the inner wall of the connecting pipe. This water flow effectively washes away polished metal debris and reduces the temperature at the connection point, extending the lifespan of the polishing assembly. Additionally, due to the water's absorbent properties and the limited size of the annular groove, the flowing water completely washes the annular groove, preventing metal debris residue and ensuring the proper installation and use of the sealing ring.

[0006] To address the problems of existing technologies, this invention provides a polishing device for connecting pipes capable of embedding rubber rings, comprising a clamping unit and an inner wall polishing unit; the clamping unit vertically clamps the connecting pipe, and the inner wall polishing unit slides vertically into the inner wall of the connecting pipe; the inner wall polishing unit includes a water spray head and a polishing assembly, which are arranged vertically from top to bottom; when polishing the inner wall of the connecting pipe, the inner wall polishing unit moves vertically from bottom to top into the connecting pipe; the polishing assembly has a rotation axis in the vertical direction when polishing the inner wall of the connecting pipe; the water spray head rotates synchronously with the polishing assembly, and the spray direction of the water spray head is always parallel to the radial direction of the connecting pipe.

[0007] Preferably, the spray head is a rotating structure, with multiple water outlets evenly arranged around the axis of the spray head. The water outlets spray water onto the inner wall of the connecting pipe to form a wetting area, and the wetting areas formed by two adjacent water outlets on the inner wall of the connecting pipe intersect.

[0008] Preferably, the polishing assembly includes a polishing head that extends under centrifugal force and contacts the inner wall of the connecting tube, and a reset assembly that drives the polishing head to retract after the centrifugal force is lost.

[0009] Preferably, the reset assembly includes a connecting arm with one end fixedly connected to the polishing head, the polishing head is arranged in a ring array, a coil spring is provided in the ring formed by the polishing head, and a transmission assembly is provided between the coil spring and the end of the connecting arm away from the polishing head, and the polishing head rotates around the connection between the connecting arm and the transmission assembly.

[0010] Preferably, a water-holding shell for receiving clean water is provided around the inner wall polishing unit, and the level of clean water stored in the water-holding shell is lower than that of the polishing assembly.

[0011] Preferably, a water supply pipe is provided at the bottom of the water-holding shell along the axial direction of the water-holding shell. The water supply pipe passes through the center of the polishing component vertically and is connected to the water spray head. A drive unit is provided at the lower part of the water supply pipe to drive the water supply pipe to rotate around its own axis.

[0012] Preferably, multiple agitators are evenly arranged around the side wall of the water supply pipe to agitate the water in the water tank.

[0013] Preferably, a rotary connector is provided at the bottom of the water supply pipe, a connecting pipe is provided between the rotary connector and the water tank, and a pump body is provided on the connecting pipe.

[0014] Preferably, a ring-shaped partition plate is provided in the water-containing shell, which divides the water-containing shell into a first cavity and a second cavity from the inside out. A filter plate is provided on the partition plate to connect the first cavity and the second cavity, and the connection between the connecting pipe and the water-containing shell is located in the second cavity.

[0015] Preferably, the clamping unit includes a gripper for clamping the connecting pipe, and a receiving ring for receiving the connecting pipe is provided below the gripper, the inner diameter of the receiving ring being equal to the inner diameter of the connecting pipe.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. This invention vertically sets the connecting pipe and uses a clamping unit to move it vertically. Simultaneously, an inner wall polishing unit is positioned below the connecting pipe. This allows the connecting pipe to be wetted by a water spray head as it descends vertically. The wetted inner wall then passes through the polishing assembly. The polishing assembly prevents dry grinding during polishing, and the water sprayed onto the inner wall flows downwards under gravity. This water flow inevitably passes through the connection between the polishing assembly and the inner wall of the connecting pipe. This water flow immediately washes away polished metal debris and reduces the temperature at the connection point, extending the lifespan of the polishing assembly. Furthermore, due to the water's adsorption properties and the limited size of the annular groove, the flowing water completely washes the annular groove, preventing metal debris residue and ensuring the proper installation and use of the subsequent sealing ring.

[0018] 2. By setting up a water-filled shell, the polished connecting pipe can be gradually immersed in the water in the shell under the action of the clamping unit. This allows the small amount of metal debris remaining on the inner wall of the connecting pipe to be washed away by the water in the shell. This is because when the water sprays water onto the inner wall of the connecting pipe, the downward flow of water cannot guarantee complete coverage of the inner wall; the water flow is tilted downwards, causing some metal debris to adhere to the inner wall. When the connecting pipe falls into the water in the shell, the metal debris adhering to it falls to the bottom of the shell under its own gravity. Simultaneously, the water level in the shell is kept lower than that of the polishing components, avoiding excessive resistance during polishing of the inner wall of the connecting pipe. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding a rubber ring, according to the present invention.

[0020] Figure 2 This is a side view of a polishing device for a connecting tube capable of embedding a rubber ring, according to the present invention.

[0021] Figure 3 This invention relates to a polishing device for connecting tubes capable of embedding rubber rings. Figure 2 Schematic diagram of cross-section at point AA.

[0022] Figure 4 This is a cross-sectional perspective view of a polishing device for a connecting pipe capable of embedding a rubber ring, according to the present invention.

[0023] Figure 5 This invention relates to a polishing device for connecting tubes capable of embedding rubber rings. Figure 4 A magnified view of a portion of point B in the middle.

[0024] Figure 6 This is a three-dimensional schematic diagram of a connecting pipe with an embedded rubber ring according to the present invention after the water-containing shell has been removed using a polishing device.

[0025] Figure 7 This is a three-dimensional schematic diagram of a connecting pipe with an embedded rubber ring according to the present invention, after the water-holding shell and clamping unit have been removed using a polishing device.

[0026] Figure 8 This is a three-dimensional schematic diagram of the polishing component in a polishing device for a connecting pipe capable of embedding a rubber ring, as described in this invention, when the component is in rotation.

[0027] Figure 9 This invention relates to a polishing device for connecting tubes capable of embedding rubber rings. Figure 8 A magnified view of a portion of point C.

[0028] Figure 10This is a cross-sectional three-dimensional schematic diagram of the polishing component in a polishing device for a connecting pipe capable of embedding a rubber ring, as described in this invention, when the component is in rotation.

[0029] Figure 11 This is a three-dimensional schematic diagram of the polishing component in a polishing device for a connecting pipe capable of embedding a rubber ring, as described in this invention, when it is not rotating.

[0030] The numbers on the map are:

[0031] 1. Clamping unit; 11. Gripper; 12. Receiving ring; 13. Telescopic unit; 14. Lifting unit; 2. Inner wall polishing unit; 21. Polishing assembly; 211. Polishing head; 212. Connecting arm; 213. Coil spring; 214. First gear ring; 215. First gear; 22. Water spray head; 23. Water supply pipe; 231. Agitator; 24. Drive unit; 241. Second gear; 242. Second gear ring; 243. Rotary actuator; 3. Connecting pipe; 31. Annular groove; 4. Water tank; 41. Connecting pipe; 42. Rotary connector; 43. Pump body; 44. Isolation plate; 45. Filter plate. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1-3 and Figure 5 A polishing device for a connecting pipe capable of embedding a rubber ring includes a clamping unit 1 and an inner wall polishing unit 2. The clamping unit 1 vertically clamps the connecting pipe 3, and the inner wall polishing unit 2 slides in a vertical direction with the inner wall of the connecting pipe 3. The inner wall polishing unit 2 includes a water spray head 22 and a polishing assembly 21, which are arranged vertically from top to bottom. When polishing the inner wall of the connecting pipe 3, the inner wall polishing unit 2 moves vertically from bottom to top into the connecting pipe 3. When polishing the inner wall of the connecting pipe 3, the polishing assembly 21 has a rotation axis in the vertical direction. The water spray head 22 rotates synchronously with the polishing assembly 21, and the water spray direction of the water spray head 22 is always parallel to the radial direction of the connecting pipe 3.

[0034] Existing polishing equipment for connecting pipes 3 typically places the connecting pipe 3 horizontally during polishing, and the inner or outer walls of most connecting pipes 3 have consistent curvature. Therefore, when polishing ordinary connecting pipes 3, especially their inner walls, although a certain amount of metal debris remains after polishing, this can be completely removed by blowing it away with a blower. However, the connecting pipe 3 polished in this invention differs in structure from ordinary connecting pipes 3. Specifically, the inner wall of the polished connecting pipe 3 in this invention has an annular groove 31 for placing a sealing ring, which improves the connection's sealing performance. If the connecting pipe 3 is polished horizontally, the remaining debris will accumulate in the annular groove 31, significantly affecting the subsequent installation of the sealing ring.

[0035] To prevent metal debris from remaining in the annular groove 31 of the connecting pipe 3, the polishing equipment was further designed. The specific structure and working process of the polishing equipment are as follows:

[0036] The inner wall polishing unit 2 is always set in a vertical position. Before polishing, the connecting pipe 3 is clamped by the clamping unit 1. At this time, the connecting pipe 3 is in a vertical position, and the inner wall polishing unit 2 is located below the connecting pipe 3. Then, the clamping unit 1 drives the connecting pipe 3 to move from top to bottom in the vertical direction. At the same time, the polishing component 21 starts to rotate. The water spray head 22 located on the upper part of the polishing component 21 rotates synchronously with the polishing component 21, and at this time, the water spray head 22 starts to spray water. Since the water spray head 22 is located on the upper part of the polishing component 21, as the clamping unit 1 drives the connecting pipe 3 to descend, the water spray head 22 enters the interior of the connecting pipe 3 from the lower part of the connecting pipe 3 before the polishing component 21. In this way, the water spray head 22 can pre-wet the inner wall of the connecting pipe 3. As the connecting pipe 3 continues to descend, the wetted inner wall of the connecting pipe 3 will pass through the polishing component 21. This improves the wettability of the inner wall of the connecting pipe 3 and avoids the polishing component 21 from dry grinding during the polishing process. Meanwhile, during the polishing process of the polishing component 21 polishing the inner wall of the connecting pipe 3, the water spray head 22 located at the top of the polishing component 21 is always in operation. The water sprayed by the water spray head 22 can completely cover the inner wall of the connecting pipe 3. Under the action of gravity and the adsorption force of the water flow itself, the water flowing down vertically can carry away the metal debris remaining in the annular groove 31 when it passes through the annular groove 31. When the polishing component 21 moves to the upper end of the connecting pipe 3, the polishing of the connecting pipe 3 is completed. At this time, the polishing component 21 stops rotating, the water spray head 22 continues to spray water, and the clamping unit 1 drives the polished connecting pipe 3 to rise vertically. Then the clamping unit 1 releases the connecting pipe 3, and the staff can remove the connecting pipe 3. In this way, the situation of a large amount of metal debris remaining in the annular groove 31 after polishing can be avoided.

[0037] By vertically positioning the connecting pipe 3 and using the clamping unit 1 to move it vertically, while simultaneously placing an inner wall polishing unit 2 below the connecting pipe 3, the connecting pipe 3 is first wetted by the water spray head 22 as it descends vertically. The wetted inner wall of the connecting pipe 3 then passes through the polishing assembly 21. The polishing assembly 21 prevents dry grinding during polishing of the wetted inner wall of the connecting pipe 3. Furthermore, the water sprayed onto the inner wall of the connecting pipe 3 flows downwards under gravity, inevitably passing through the connection between the polishing assembly 21 and the inner wall of the connecting pipe 3. This water flow not only immediately washes away polished metal debris but also reduces the temperature at the connection between the polishing assembly 21 and the connecting pipe 3, extending the service life of the polishing assembly 21. Simultaneously, due to the water's adsorption properties and the limited size of the annular groove 31, the flowing water completely washes the annular groove 31, preventing metal debris residue and ensuring the proper installation and use of the subsequent sealing ring.

[0038] Reference Figures 1-11The spray head 22 is a rotating structure. Multiple water outlets are evenly arranged around the axis of the spray head 22. The water outlets spray water onto the inner wall of the connecting pipe 3 to form a wetting area. The wetting areas formed by two adjacent water outlets on the inner wall of the connecting pipe 3 intersect.

[0039] Since the wetting areas formed by the two adjacent water outlets on the inner wall of the connecting pipe 3 are intersecting, when the spray head 22 is turned on and the clamping unit 1 drives the connecting pipe 3 to rise and fall in the vertical direction, the wetting area formed by the spray head 22 spraying water on the inner wall of the connecting pipe 3 can completely cover the inner wall of the connecting pipe 3, ensuring that there are no blind spots on the inner wall of the connecting pipe 3.

[0040] Reference Figure 8 The polishing assembly 21 includes a polishing head 211 that extends under centrifugal force and contacts the inner wall of the connecting tube 3, and a reset assembly that drives the polishing head 211 to retract after the centrifugal force is lost.

[0041] Reference Figures 9-11 The reset assembly includes a connecting arm 212 fixedly connected at one end to a polishing head 211. The polishing heads 211 are arranged in a ring array. A coil spring 213 is provided in the ring formed by the polishing heads 211. A transmission assembly is provided between the coil spring 213 and the end of the connecting arm 212 away from the polishing head 211. The polishing head 211 rotates around the connection between the connecting arm 212 and the transmission assembly.

[0042] The transmission assembly includes a first gear 215 fixedly mounted on the end of the connecting arm 212 and a first toothed ring 214 mounted on the upper part of the coil spring 213. The first gear 215 and the first toothed ring 214 mesh with each other, and one end of the coil spring 213 is fixedly connected to the bottom of the first toothed ring 214. When the polishing assembly 21 starts to rotate, the polishing head 211 gradually extends under the action of centrifugal force. At this time, the connecting arm 212 rotates under the traction of the polishing head 211, which causes the first gear 215 mounted on the end of the connecting arm 212 to drive the first toothed ring 214 to rotate. At this time, the coil spring 213 begins to coil. Thus, when the polishing is finished and the polishing assembly 21 stops rotating, the restoring force generated by the coil spring 213 can cause the polishing head 211 to retract.

[0043] Reference Figure 2 and Figure 3 A water-holding shell 4 is provided on the periphery of the inner wall polishing unit 2 to receive clean water. The level of clean water stored in the water-holding shell 4 is lower than that of the polishing component 21.

[0044] By setting up a water-filled shell 4, the polished connecting pipe 3 can be gradually immersed in the water in the shell 4 under the action of the clamping unit 1. This allows the small amount of metal debris remaining on the inner wall of the connecting pipe 3 to be washed away by the water in the shell 4. This is because when the water spray head 22 sprays water onto the inner wall of the connecting pipe 3, the water flow downwards cannot completely cover the inner wall; the water flow is tilted downwards, causing some metal debris to adhere to the inner wall. When the connecting pipe 3 falls into the water in the shell 4, the metal debris adhering to it falls to the bottom of the shell 4 under its own gravity. Simultaneously, the water level in the shell 4 is kept lower than that of the polishing assembly 21, preventing the polishing assembly 21 from encountering significant resistance when polishing the inner wall of the connecting pipe 3.

[0045] Reference Figure 3 and Figure 7 A water supply pipe 23 is provided at the bottom of the water-holding shell 4 along the axis of the water-holding shell 4. The water supply pipe 23 passes through the center of the polishing component 21 in a vertical direction and is connected to the water spray head 22. A drive unit 24 is provided at the lower part of the water supply pipe 23 to drive the water supply pipe 23 to rotate around its own axis.

[0046] The drive unit 24 includes a second gear ring 242 fixedly sleeved around the periphery of the extension tube. The second gear ring 242 is located below the water-containing shell 4. A second gear 241 is meshed on one side of the second gear ring 242. A rotary driver 243 for driving the rotation of the second gear 241 is provided at the end of the second gear 241. The rotary driver 243 is preferably a servo motor.

[0047] Reference Figure 5 Multiple agitators 231 are evenly arranged around the side wall of the water supply pipe 23 to agitate the water in the water tank 4.

[0048] When the water supply pipe 23 rotates, the agitator 231 agitates the water in the water tank 4, causing the water in the water tank 4 to form a vortex. Thus, when the connecting pipe 3 is immersed in the water in the water tank 4, the rotating water flow can completely flush down the metal debris remaining on the inner wall of the connecting pipe 3.

[0049] Reference Figure 6 and Figure 7 A rotary connector 42 is provided at the bottom of the water supply pipe 23, and a connecting pipe 41 is provided between the rotary connector 42 and the water holding shell 4. A pump body 43 is provided on the connecting pipe 41.

[0050] The pump body 43 draws water from the water tank 4 into the water supply pipe 23 through the connecting pipe 41, and then sprays the water out through the spray head 22.

[0051] Reference Figure 4 An annular partition plate 44 is provided in the water-containing shell 4, which divides the water-containing shell 4 into a first cavity and a second cavity from the inside out. A filter plate 45 is provided on the partition plate 44 to connect the first cavity and the second cavity. The connection between the connecting pipe 41 and the water-containing shell 4 is located in the second cavity.

[0052] By setting up the filter plate 45, it is ensured that the water entering the connecting pipe 41 can be filtered in advance, and the polished metal debris is left in the first cavity.

[0053] Reference Figure 4 and Figure 6 The clamping unit 1 includes a clamping jaw 11 for clamping the connecting pipe 3, and a receiving ring 12 for receiving the connecting pipe 3 is provided below the clamping jaw 11. The inner diameter of the receiving ring 12 is equal to the inner diameter of the connecting pipe 3.

[0054] By providing a receiving ring 12 at the lower part of the gripper 11, the gripper 11 eliminates the need for manual gripping of the connecting pipe 3 before clamping it, reducing workload. Furthermore, the inner diameter of the receiving ring 12 is equal to the inner diameter of the connecting pipe 3, ensuring smooth clamping of the connecting pipe 3 while preventing the inner ring of the receiving ring 12 from obstructing the working area of ​​the polishing assembly 21. The clamping unit 1 also includes a telescopic unit 13 for driving the gripper 11 to move radially along the receiving ring 12 and a lifting unit 14 for driving the gripper 11 to move vertically. Since the telescopic unit 13 and the lifting unit 14 are existing technologies, their specific structures will not be described in detail here.

[0055] Working principle: The inner wall polishing unit 2 is always set in a vertical position. Before polishing, the connecting pipe 3 is clamped by the clamping unit 1. At this time, the connecting pipe 3 is in a vertical position, and the inner wall polishing unit 2 is located below the connecting pipe 3. Then, the clamping unit 1 drives the connecting pipe 3 to move from top to bottom in the vertical direction. At the same time, the polishing component 21 starts to rotate. The water spray head 22 located on the upper part of the polishing component 21 rotates synchronously with the polishing component 21 and starts to spray water. Since the water spray head 22 is located on the upper part of the polishing component 21, as the clamping unit 1 drives the connecting pipe 3 to descend, the water spray head 22 enters the interior of the connecting pipe 3 from the lower part of the connecting pipe 3 before the polishing component 21. In this way, the water spray head 22 can pre-wet the inner wall of the connecting pipe 3. As the connecting pipe 3 continues to descend, the wetted inner wall of the connecting pipe 3 will pass through the polishing component 21. This improves the wettability of the inner wall of the connecting pipe 3 and avoids the polishing component 21 from dry grinding during the polishing process. Meanwhile, during the polishing process of the polishing component 21 polishing the inner wall of the connecting pipe 3, the water spray head 22 located at the top of the polishing component 21 is always in operation. The water sprayed by the water spray head 22 can completely cover the inner wall of the connecting pipe 3. Under the action of gravity and the adsorption force of the water flow itself, the water flowing down vertically can carry away the metal debris remaining in the annular groove 31 when it passes through the annular groove 31. When the polishing component 21 moves to the upper end of the connecting pipe 3, the polishing of the connecting pipe 3 is completed. At this time, the polishing component 21 stops rotating, the water spray head 22 continues to spray water, and the clamping unit 1 drives the polished connecting pipe 3 to rise vertically. Then the clamping unit 1 releases the connecting pipe 3, and the staff can remove the connecting pipe 3. In this way, the situation of a large amount of metal debris remaining in the annular groove 31 after polishing can be avoided.

[0056] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A polishing device for a connecting pipe capable of embedding a rubber ring, comprising a clamping unit (1) and an inner wall polishing unit (2); Its features are, The clamping unit (1) vertically clamps the connecting pipe (3), and the inner wall polishing unit (2) slides in the vertical direction with the inner wall of the connecting pipe (3). The inner wall polishing unit (2) includes a water spray head (22) and a polishing assembly (21). The water spray head (22) and the polishing assembly (21) are arranged vertically from top to bottom. When the inner wall polishing unit (2) polishes the inner wall of the connecting pipe (3), it moves vertically from bottom to top into the connecting pipe (3). When the polishing assembly (21) polishes the inner wall of the connecting pipe (3), it has a rotation axis in the vertical direction. The water spray head (22) rotates synchronously with the polishing assembly (21), and the water spray direction of the water spray head (22) is always parallel to the radial direction of the connecting pipe (3). A water-holding shell (4) for receiving clean water is provided on the periphery of the inner wall polishing unit (2), and the level of clean water stored in the water-holding shell (4) is lower than that of the polishing assembly (21). A water supply pipe (23) is installed at the bottom of the water tank (4) along the axial direction of the water tank (4). Multiple agitators (231) are evenly arranged around the side wall of the water supply pipe (23) to agitate the water in the water tank (4). After polishing, the connecting pipe (3) can be gradually immersed in the water in the water tank (4) under the action of the clamping unit (1). The stirring component (231) stirs the water in the water tank (4), causing the water in the water tank (4) to form a vortex.

2. The polishing equipment for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that, The spray head (22) is a rotating structure. Multiple water outlets are evenly arranged around the axis of the spray head (22). The water outlets spray water onto the inner wall of the connecting pipe (3) to form a wetting area. The wetting areas formed by two adjacent water outlets on the inner wall of the connecting pipe (3) are intersecting.

3. The polishing equipment for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that, The polishing assembly (21) includes a polishing head (211) that extends under centrifugal force and contacts the inner wall of the connecting tube (3), and a reset assembly that drives the polishing head (211) to retract after the centrifugal force is lost.

4. The polishing equipment for connecting pipes capable of embedding rubber rings according to claim 3, characterized in that, The reset assembly includes a connecting arm (212) with one end fixedly connected to the polishing head (211). The polishing heads (211) are arranged in a ring array. A coil spring (213) is provided in the ring formed by the polishing heads (211). A transmission assembly is provided between the coil spring (213) and the end of the connecting arm (212) away from the polishing head (211). The polishing head (211) rotates around the connection between the connecting arm (212) and the transmission assembly.

5. A polishing device for a connecting pipe capable of embedding a rubber ring according to claim 1, characterized in that, The water supply pipe (23) passes through the center of the polishing assembly (21) in a vertical direction and is connected to the water spray head (22). A drive unit (24) is provided at the lower part of the water supply pipe (23) to drive the water supply pipe (23) to rotate around its own axis.

6. The polishing equipment for connecting pipes capable of embedding rubber rings according to claim 5, characterized in that, A rotary connector (42) is provided at the bottom of the water supply pipe (23), and a connecting pipe (41) is provided between the rotary connector (42) and the water tank (4), and a pump body (43) is provided on the connecting pipe (41).

7. A polishing device for a connecting pipe capable of embedding a rubber ring according to claim 6, characterized in that, An annular partition plate (44) is provided in the water-containing shell (4). The partition plate (44) divides the water-containing shell (4) into a first cavity and a second cavity from the inside out. A filter plate (45) is provided on the partition plate (44) to connect the first cavity and the second cavity. The connection between the connecting pipe (41) and the water-containing shell (4) is located in the second cavity.

8. The polishing equipment for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that, The clamping unit (1) includes a clamp (11) for clamping the connecting pipe (3), and a receiving ring (12) for receiving the connecting pipe (3) is provided below the clamp (11). The inner diameter of the receiving ring (12) is equal to the inner diameter of the connecting pipe (3).

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