阅读说明：本技术 多功能管内壁加工设备 (Multifunctional pipe inner wall processing equipment ) 是由 钟军超 陈建波 李志杰 贾小伟 于 2021-06-25 设计创作，主要内容包括：本发明提供了一种多功能管内壁加工设备,所述多功能管内壁加工设备包括运行轨道、行走平台、操作台以及择一的安装在所述操作台安装侧的打磨杆和风杆,所述行走平台设于所述运行轨道上,并能沿所述运行轨道运动；所述操作台设于所述行走平台上,所述操作台上具有第一电机以及风管孔,所述风管孔用于连接气源,所述操作台朝向球墨铸铁管的一侧形成工作侧；所述打磨杆与所述第一电机传动连接,所述第一电机带动所述打磨杆旋转；所述风杆与所述风管孔连通,所述风管孔用于向所述风杆供气。本发明提供的多功能管内壁加工设备提高了加工效率,减少了资金投入,并且减少了空间的占用。(The invention provides a multifunctional pipe inner wall processing device which comprises a running track, a walking platform, an operating platform, a polishing rod and an air rod, wherein the polishing rod and the air rod are selected from the polishing platform and the air rod; the operating platform is arranged on the walking platform and is provided with a first motor and an air pipe hole, the air pipe hole is used for being connected with an air source, and a working side is formed at one side, facing the nodular cast iron pipe, of the operating platform; the grinding rod is in transmission connection with the first motor, and the first motor drives the grinding rod to rotate; the air rod is communicated with the air pipe hole, and the air pipe hole is used for supplying air to the air rod. The multifunctional pipe inner wall processing equipment provided by the invention improves the processing efficiency, reduces the capital investment and reduces the space occupation.)

1. A multifunctional pipe inner wall processing device is characterized by comprising:

running the track;

the traveling platform is arranged on the running track and can move along the running track;

the operating platform is arranged on the walking platform and is provided with a first motor and an air pipe hole, the air pipe hole is used for being connected with an air source, and a working side is formed on one side, facing the nodular cast iron pipe, of the operating platform; and

selecting a grinding rod and a wind rod which are arranged on the working side of the operating platform;

when the grinding rod is arranged on the operating platform, the grinding rod is in transmission connection with the first motor, and the first motor drives the grinding rod to rotate;

when the air rod is arranged on the operating platform, the air rod is communicated with the air pipe hole, and the air pipe hole is used for supplying air to the air rod.

2. The multifunctional pipe inner wall processing equipment as claimed in claim 1, wherein a first limiting block is arranged at one end of the running track close to the ductile cast iron pipe, a second limiting block is arranged at one end far away from the ductile cast iron pipe, a third limiting block is arranged on the running track and located between the first limiting block and the second limiting block, and the third limiting block is detachably connected with the running track;

when the grinding rod is arranged on the operating platform, the path between the second limiting block and the third limiting block is a walking path of the grinding rod;

when the wind rod is arranged on the operating platform, the path between the first limiting block and the second limiting block is the walking path of the wind rod.

3. The multifunctional pipe inner wall processing apparatus according to claim 2, wherein the third stopper comprises:

a clamping part which is provided with an opening capable of opening and closing and is used for clamping the periphery of the running track; and

and the limiting part is fixedly arranged at the top of the card and the part.

4. The multifunctional pipe inner wall processing equipment according to claim 3, wherein a traveling roller engaged with the running rail is provided at the bottom of the traveling platform, and a second motor for driving the traveling roller to rotate is further provided on the traveling platform;

the first limiting block, the second limiting block and the third limiting block are respectively provided with an inductor, and the inductors are in communication connection with the second motor.

5. The multifunctional pipe inner wall processing equipment according to claim 1, wherein a guide sleeve is further provided on the traveling platform, and the guide sleeve can be annularly provided outside the grinding rod or the wind rod.

6. The multifunctional pipe inner wall processing apparatus of claim 5, wherein when the grinding rod is installed, the multifunctional pipe inner wall processing apparatus further comprises a rolling bearing disposed between the guide sleeve and the grinding rod to reduce relative friction between the guide sleeve and the grinding rod.

7. The multifunctional pipe inner wall processing apparatus of claim 1, further comprising a supporting means having a supporting roller at a top thereof for supporting the grinding rod or the wind rod between the running rail and the ductile iron pipe.

8. The multifunctional pipe inner wall processing apparatus of claim 5, wherein the grinding bar comprises:

the transmission section is rotationally connected with the guide sleeve; and

the first working section is detachably arranged at one end, close to the nodular cast iron pipe, of the transmission section, and a polishing head is arranged at one end, close to the nodular cast iron pipe, of the first working section;

the wind lever includes:

the fixing section is clamped with the guide sleeve; and

the second working section is detachably arranged at one end, close to the nodular cast iron pipe, of the fixed section, and an air outlet is formed at one end, close to the nodular cast iron pipe, of the second working section.

9. The apparatus for processing the inner wall of a multi-functional pipe according to claim 8, wherein the transmission section and the first working section, and the fixing section and the second working section are connected by a flange structure.

10. The inner wall processing equipment for the multifunctional pipe as claimed in claim 8, wherein a plurality of air outlets are uniformly arranged around the axial direction of the second working section, and the opening direction of the air outlets forms an included angle with the axial direction of the second working section.

Technical Field

The invention belongs to the technical field of nodular cast iron pipe processing, and particularly relates to multifunctional pipe inner wall processing equipment.

Background

When the inner wall of the nodular cast iron pipe needs to be sprayed with polyurethane and other materials, certain smoothness of the inner wall needs to be guaranteed, and the inner wall of the nodular cast iron pipe which is formed by centrifugal casting is not smooth and needs to be subjected to internal grinding treatment and soot blowing. The existing two devices of the internal grinding machine and the blowing device are used alternately, so that the occupied area of the devices is large, the devices are inconvenient to replace alternately, and the production efficiency and the capital investment are reduced.

The path deviation is easy to occur in the polishing process of the existing internal grinding machine, so that the polishing effects at different positions are different, and the quality of finished products is influenced.

Disclosure of Invention

The embodiment of the invention provides a multifunctional pipe inner wall processing device, and aims to realize that one device can simultaneously realize polishing and blowing operation, improve the production efficiency, ensure the polishing quality and reduce the occupied area and the capital investment.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is a multifunctional pipe inner wall processing device, including:

running the track;

the traveling platform is arranged on the running track and can move along the running track;

the operating platform is arranged on the walking platform and is provided with a first motor and an air pipe hole, the air pipe hole is used for being connected with an air source, and a working side is formed on one side, facing the nodular cast iron pipe, of the operating platform; and

selecting a grinding rod and a wind rod which are arranged on the working side of the operating platform;

when the grinding rod is arranged on the operating platform, the grinding rod is in transmission connection with the first motor, and the first motor drives the grinding rod to rotate;

when the air rod is arranged on the operating platform, the air rod is communicated with the air pipe hole, and the air pipe hole is used for supplying air to the air rod.

In a possible implementation manner, a first limiting block is arranged at one end, close to the nodular cast iron pipe, of the running track, a second limiting block is arranged at one end, far away from the nodular cast iron pipe, a third limiting block is further arranged on the running track and located between the first limiting block and the second limiting block, and the third limiting block is detachably connected with the running track;

when the grinding rod is arranged on the operating platform, the path between the second limiting block and the third limiting block is a walking path of the grinding rod;

when the wind rod is arranged on the operating platform, the path between the first limiting block and the second limiting block is the walking path of the wind rod.

In one possible implementation manner, the third stopper includes:

a clamping part which is provided with an opening capable of opening and closing and is used for clamping the periphery of the running track; and

and the limiting part is fixedly arranged at the top of the card and the part.

In a possible implementation manner, a traveling roller matched with the running track is arranged at the bottom of the traveling platform, and a second motor for driving the traveling roller to rotate is further arranged on the traveling platform;

the first limiting block, the second limiting block and the third limiting block are respectively provided with an inductor, and the inductors are in communication connection with the second motor.

In a possible implementation manner, a guide sleeve is further arranged on the walking platform, and the guide sleeve can be annularly arranged outside the grinding rod or the wind rod.

In a possible implementation manner, when the polishing rod is installed, the processing equipment for the inner wall of the multifunctional pipe further comprises a rolling bearing, and the rolling bearing is arranged between the guide sleeve and the polishing rod so as to reduce the relative friction between the guide sleeve and the polishing rod.

In a possible implementation manner, the equipment for processing the inner wall of the multifunctional pipe further comprises a supporting device, wherein a supporting roller is arranged at the top of the supporting device, and the supporting roller is used for supporting the grinding rod or the air rod between the running track and the ductile iron pipe.

In one possible implementation, the grinding rod includes:

the transmission section is rotationally connected with the guide sleeve; and

the first working section is detachably arranged at one end, close to the nodular cast iron pipe, of the transmission section, and a polishing head is arranged at one end, close to the nodular cast iron pipe, of the first working section;

the wind lever includes:

the fixing section is clamped with the guide sleeve; and

the second working section is detachably arranged at one end, close to the nodular cast iron pipe, of the fixed section, and an air outlet is formed at one end, close to the nodular cast iron pipe, of the second working section.

In a possible implementation manner, the transmission section and the first working section, and the fixed section and the second working section are connected through flange structures.

In a possible implementation manner, the air outlet is uniformly provided with a plurality of air outlets around the axial direction of the second working section, and the opening direction of the air outlet and the axial direction of the second working section form an included angle.

In the embodiment of the application, the multifunctional pipe inner wall processing equipment limits the walking path of the walking platform through the matching of the walking platform and the running track, so that the grinding error caused by the deviation of the route is prevented, and the grinding quality and the quality of the nodular cast iron pipe are improved; the operating platform can be simultaneously provided with a grinding rod and a wind rod, and when the grinding rod works, the first motor works; with tuber pipe hole intercommunication in the time of the wind pole work, first motor does not influence the work of wind pole to only need change pole and the wind pole of polishing, can realize that equipment realizes two kinds of operating condition simultaneously (polish and sweep), do not need frequently to change equipment, improved machining efficiency, reduced the fund input, and reduced the occuping of space.

Drawings

Fig. 1 is a first schematic view illustrating a use state of a multifunctional pipe inner wall processing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is a schematic view illustrating a second usage state of the multifunctional pipe inner wall processing apparatus according to the embodiment of the present invention;

fig. 5 is a schematic front view of a wind lever according to an embodiment of the present invention.

Description of reference numerals:

10-a running track; 20-a walking platform; 30-an operation table; 40-grinding rod;

11-a first stopper; 21-a walking roller; 31-a first motor; 41-a transmission section;

12-a second stopper; 22-a second electric machine; 32-duct holes; 42-a first working section;

13-a third stopper; 33-a belt; 43-polishing head;

14-card and section; 44-a connecting flange;

15-a limiting part;

16-an inductor;

50-wind rod; 60-a guide sleeve; 70-a support device;

51-a fixed segment; 61-a fixed seat; 71-support rollers;

52-a second working segment; 62-a connecting plate;

53-air outlet; 63-connecting rods;

64-rolling bearings;

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a multi-functional pipe inner wall processing apparatus according to the present invention will now be described. The multifunctional pipe inner wall processing equipment comprises a running track 10, a walking platform 20, an operating platform 30, a grinding rod 40 and a wind rod 50, wherein the grinding rod 40 and the wind rod 50 are selected from the working side of the operating platform 30, and the walking platform 20 is arranged on the running track 10 and can move along the running track 10; the operation platform 30 is arranged on the walking platform 20, a first motor 31 and an air duct hole 32 are arranged on the operation platform 30, the air duct hole 32 is used for being connected with an air source, and a working side is formed on one side, facing the nodular cast iron pipe, of the operation platform 30; when the grinding rod 40 is arranged on the operating platform 30, the grinding rod 40 is in transmission connection with the first motor 31, and the first motor 31 drives the grinding rod 40 to rotate; when the air bar 50 is mounted on the console 30, the air bar 50 is communicated with the air duct holes 32, and the air duct holes 32 are used for supplying air to the air bar 50.

It should be noted that the grinding rod 40 mainly achieves a grinding effect, and therefore the grinding rod 40 can be a solid rod, so that the grinding strength is ensured; the air bar 50 is primarily responsible for the purging action, and therefore the air bar 50 is a hollow bar, thereby ensuring the passage of the purge gas.

When the multifunctional pipe inner wall processing equipment provided by the embodiment is used, the running track 10 is installed, and the position of the nodular cast iron pipe is adjusted, so that the axial direction of the nodular cast iron pipe is parallel to the running track 10; when the position of the nodular cast iron pipe is fixed, firstly, a polishing step is carried out, the polishing rod 40 is fixed on the operation table 30 at the moment, the first motor 31 on the operation table 30 is in transmission connection with the polishing rod 40, after the polishing rod 40 is fixed, the walking platform 20 and the first motor 31 are synchronously started, the walking platform 20 is used for walking towards the direction of the nodular cast iron pipe, the first motor 31 is used for driving the polishing rod 40 to rotate, when the polishing rod 40 extends into the inner wall of the nodular cast iron pipe, the nodular cast iron pipe is polished, at the moment, special equipment drives the nodular cast iron pipe to rotate, and when the polishing rod 40 runs for a certain distance in the nodular cast iron pipe, the nodular cast iron pipe is polished; after the grinding is finished, the first motor 31 is turned off, the walking platform 20 drives the grinding rod 40 to withdraw from the nodular cast iron pipe (i.e. move away from the nodular cast iron pipe), the grinding rod 40 is disassembled and the air feeding rod 50 is installed in a replacement mode, at the moment, the first motor 31 is idle, the air pipe hole 32 is communicated with the air feeding rod 50 and used for continuously supplying air into the air feeding rod 50, and the walking platform 20 moves according to the path to finish the purging process.

It should be understood that the first motor 31 is in transmission connection with the grinding rod 40 through the belt 33, a first belt pulley is arranged on an output shaft of the first motor 31, a second belt pulley is arranged at the end part of the grinding rod 40, and the first belt pulley and the second belt pulley are in transmission through the belt 33; optionally, the diameter of the second pulley is smaller than that of the first pulley, so that the rotation speed of the grinding rod 40 is ensured under the condition that the rotation speed of the first motor 31 is relatively small, the rotation speed of the first motor 31 is reduced, and energy conservation and consumption reduction are achieved.

Compared with the prior art, the multifunctional pipe inner wall processing equipment limits the walking path of the walking platform 20 through the matching of the walking platform 20 and the running track 10, prevents the grinding error caused by the deviation of the route, and improves the grinding quality and the quality of the nodular cast iron pipe; wherein, the operation table 30 can be simultaneously provided with a grinding rod 40 and a wind rod 50, and when the grinding rod 40 works, the first motor 31 works; the air duct 50 is communicated with the air duct hole 32 when working, the first motor 31 does not influence the working of the air duct 50, so that the equipment can realize two working states (grinding and purging) simultaneously only by replacing the grinding rod 40 and the air duct 50, the equipment does not need to be frequently replaced, the processing efficiency is improved, the capital investment is reduced, and the occupation of space is reduced.

In some embodiments, the track 10 may be configured as shown in fig. 1 and 4. Referring to fig. 1 and 4, a first limiting block 11 is arranged at one end of the running track 10 close to the ductile cast iron pipe, a second limiting block 12 is arranged at one end far away from the ductile cast iron pipe, a third limiting block 13 positioned between the first limiting block 11 and the second limiting block 12 is further arranged on the running track 10, and the third limiting block 13 is detachably connected with the running track 10; when the grinding rod 40 is installed on the operation table 30, the path between the second limiting block 12 and the third limiting block 13 is the walking path of the grinding rod 40; when the wind lever 50 is mounted on the console 30, a path between the first stopper 11 and the second stopper 12 is a traveling path of the wind lever 50.

When grinding is carried out, only part of the inner wall of the nodular cast iron pipe needs to be ground, so that the traveling path between the second limiting block 12 and the third limiting block 13 is the length of the section of the inner wall of the nodular cast iron pipe which needs to be ground; however, when purging, the chips generated by grinding need to be blown out of the nodular cast iron pipe, so the traveling path between the first stopper 11 and the second stopper 12 is at least equal to the length of the nodular cast iron pipe. When the wind lever 50 works, the third limiting block 13 is not installed, and the walking path of the walking platform 20 can be automatically limited under different working states by arranging the first limiting block 11, the second limiting block 12 and the third limiting block 13, so that manual control is reduced, the deviation of the moving distance of the manual control is prevented, and the quality of the nodular cast iron pipe is improved.

As another use condition, the third limiting block 13 can be detached and can be mounted at different positions on the running track 10 when the third limiting block 13 is mounted, so that the distance between the second limiting block 12 and the third limiting block 13 is changed to adapt to different grinding lengths.

In some embodiments, the third stopper 13 may adopt a structure as shown in fig. 1 and fig. 3. Referring to fig. 1 and 3, the third stopper 13 includes a card and portion 14 and a stopper portion 15, and the card and portion 14 has an opening that can be opened and closed and is used to be clamped on the periphery of the running rail 10; the position limiting part 15 is fixedly arranged on the top of the card and part 14. Alternatively, the catch portion 14 is similar to a catch structure having two pivotally connected arcuate segments and a spring connected between the two arcuate segments, the spring having a biasing force urging the two arcuate segments toward one another. Therefore, the opening can be driven by external force to be opened and taken down, the arc piece is close to the outer side of the running track 10 when the external force is loosened, the third limiting block 13 is convenient to detach and install, the position of the third limiting block 13 is convenient to change, and the labor intensity is reduced.

In some embodiments, the structure shown in fig. 1 and 4 may be adopted to realize the automatic start and stop of the walking platform 20. Referring to fig. 1 and 4, a walking roller 21 matched with the running track 10 is arranged at the bottom of the walking platform 20, and a second motor 22 for driving the walking roller 21 to rotate is further arranged on the walking platform 20; the first limiting block 11, the second limiting block 12 and the third limiting block 13 are all provided with an inductor 16, and the inductor 16 is in communication connection with the second motor 22. Optionally, the sensor 16 is a pressure sensor 16.

When the grinding rod 40 works: the second motor 22 is started, the walking roller 21 starts to roll from the position of the second limiting block 12 towards the third limiting block 13, when the walking roller 21 contacts the third limiting block 13, pressure is applied to the sensor 16 on the third limiting block 13, the sensor 16 on the third limiting block 13 sends a backspacing signal, the second motor 22 controls the walking roller 21 to backspace and roll towards the direction of the second limiting block 12, when the walking roller 21 contacts the second limiting block 12, pressure is applied to the sensor 16 on the second limiting block 12, the sensor 16 on the second limiting block 12 sends a stop signal, the second motor 22 stops, and the walking roller 21 stops rotating.

When the wind lever 50 is operated: the third stopper 13 is the dismantlement state, open second motor 22, walking gyro wheel 21 begins to roll towards first stopper 11 from the position of second stopper 12, when walking gyro wheel 21 contacts first stopper 11, exert pressure to inductor 16 on the first stopper 11, inductor 16 of first stopper 11 sends and rolls back the signal, second motor 22 control walking gyro wheel 21 rolls back, roll towards second stopper 12 direction, when walking gyro wheel 21 contacts second stopper 12, exert pressure to inductor 16 on the second stopper 12, inductor 16 on the second stopper 12 sends the shut down signal, second motor 22 shuts down, walking gyro wheel 21 stall.

The sensors 16 are respectively arranged on the first limiting block 11, the second limiting block 12 and the third limiting block 13, so that the running process of the walking platform 20 in different working states can be controlled, manual control is replaced, manual operation is reduced, and the operation process is simplified; and the walking platform 20 can rapidly change the walking state through the control of the sensor 16, the reaction is timely, and the working hours are reduced.

In some embodiments, to improve the stability of the grinding rod 40 and the wind bar 50, a structure as shown in fig. 1 and 4 may be used. Referring to fig. 1 and 4, the walking platform 20 is further provided with a guide sleeve 60, and the guide sleeve 60 can be annularly arranged outside the grinding rod 40 or the wind rod 50. When the grinding rod 40 works, the first motor 31 drives the grinding rod 40 to rotate, and as the grinding rod 40 needs to extend into the nodular cast iron pipe, the grinding rod 40 needs to meet a certain length, and under the condition that the guide sleeve 60 is arranged, the grinding rod 40 can be stabilized within the range of the guide sleeve 60, so that the grinding rod 40 is prevented from shaking due to overlong length in the working process to influence the grinding quality (in the state, the grinding rod 40 is in rotating fit with the guide sleeve 60); when the air rod 50 works, the air pipe hole 32 supplies air to the air rod 50, in order to ensure the blowing strength, the impulsive force of an air source needs to meet certain pressure, and under the condition that the guide sleeve 60 is arranged, the air rod 50 can be stabilized within the range of the guide sleeve 60, and the air rod 50 is prevented from moving when working (the air rod 50 is clamped with the guide sleeve 60 in the state).

Therefore, the guide sleeve 60 not only facilitates installation of the polishing rod 40 or the wind rod 50, but also can play a stabilizing role in working of the polishing rod 40 and the wind rod 50, and work quality is guaranteed.

In some embodiments, the guide sleeve 60 may be fixed as shown in fig. 3. Referring to fig. 3, the bottom of the guide sleeve 60 is uniformly provided with a plurality of fixing seats 61 along the axial direction thereof, each fixing seat 61 comprises a connecting plate 62 and a connecting rod 63, each connecting rod 63 is connected to the traveling platform 20 through a threaded connection, and each connecting rod 63 is connected between the guide sleeve 60 and the corresponding connecting plate 62. Wherein, all can adopt the welded mode to be connected between connecting rod 63 and the connecting rod 63, between connecting rod 63 and the guide sleeve 60, it is fixed firm. Guide sleeve 60 needs to reduce the rocking of pole 40 and the wind pole 50 of polishing respectively, through setting up fixing base 61, improves guide sleeve 60's joint strength, prolongs guide sleeve 60's life.

Alternatively, the installation height of the guide sleeve 60 may be changed by changing the length of the connecting rod 63, thereby using the installation of the grinding rod 40 and the wind lever 50.

In some embodiments, the grinding rod 40 and the guide sleeve 60 may be configured as shown in FIG. 3. Referring to fig. 3, when the grinding rod 40 is installed, the multifunctional pipe inner wall processing apparatus further includes a rolling bearing 64, and the rolling bearing 64 is disposed between the guide sleeve 60 and the grinding rod 40 to reduce the relative friction between the guide sleeve 60 and the grinding rod 40. Because the grinding rod 40 and the guide sleeve 60 need to be connected in a rolling manner, the rolling bearing 64 is arranged, so that the influence of friction on the grinding rod 40 can be reduced, the smoothness of the grinding rod 40 is improved, the damage to the grinding rod 40 and the guide sleeve 60 is introduced, the grinding quality is improved, and the service lives of the grinding rod 40 and the guide sleeve 60 are prolonged.

In some embodiments, to improve the stability of the grinding rod 40 and the wind bar 50, a structure as shown in fig. 1-2 and 4 may be employed. Referring to fig. 1 to 2 and 4, the multifunctional pipe inner wall processing apparatus further includes a supporting device 70, and a supporting roller 71 is provided on a top of the supporting device 70, and the supporting roller 71 is used to support the grinding rod 40 or the air bar 50 between the running rail 10 and the ductile iron pipe. The supporting device 70 is similar to the guiding sleeve 60 in function, and is used for stabilizing and supporting the grinding rod 40 and the wind rod 50, so that the lengths of the grinding rod 40 and the wind rod 50 are required to meet the length of the nodular cast iron pipe, and the supporting device 70 and the guiding sleeve 60 are arranged at two ends of the grinding rod 40 or the wind rod 50 in an approximate mode, so that the grinding rod 40 and the wind rod 50 are prevented from sagging due to the length process, the working states of the grinding rod 40 and the wind rod 50 can be stabilized, and the processing quality is improved; the grinding rod 40 and the air bar 50 need to move when working, so the supporting roller 71 can meet the running state of the grinding rod 40 and the air bar 50, prevent the grinding rod 40 and the air bar 50 from moving due to large friction, and reduce the advancing resistance.

Specifically, in the axial direction of the supporting roller 71, the outer diameter thereof gradually increases from the middle portion to both ends, so that when the grinding rod 40 or the wind rod 50 is placed on the supporting roller 71, both ends of the supporting roller 71 in the axial direction play a role in limiting, the grinding rod 40 or the wind rod 50 is prevented from moving in the axial direction of the supporting roller 71, and a stable working state of the grinding rod 40 and the wind rod 50 is ensured.

In some embodiments, the grinding rod 40 and the wind bar 50 may be configured as shown in fig. 1 and 4. Referring to fig. 1 and 4, the grinding rod 40 includes a transmission section 41 and a first working section 42, the transmission section 41 is rotatably connected to the guide sleeve 60; the first working section 42 is detachably arranged at one end of the conveying section close to the nodular cast iron pipe, and a polishing head 43 is arranged at one end of the first working section 42 close to the nodular cast iron pipe; the wind rod 50 comprises a fixed section 51 and a second working section 52, and the fixed section 51 is clamped with the guide sleeve 60; the second working section 52 is detachably arranged at one end of the fixed section 51 close to the nodular cast iron pipe, and an air outlet 53 is arranged at one end of the second working section 52 close to the nodular cast iron pipe.

It can be seen that the grinding rod 40 and the wind rod 50 both comprise two detachably connected ends, wherein the first working section 42 of the grinding rod 40 and the second working section 52 of the wind rod 50 are easy-to-wear sections, so that the first working section 42 of the grinding rod 40 and the second working section 52 of the wind rod 50 are detachably arranged, the replacement of the first working section 42 and the second working section 52 is facilitated, the integral replacement of the grinding rod 40 and the wind rod 50 is avoided, and the cost is reduced.

In some embodiments, the grinding rod 40 and the wind bar 50 may be configured as shown in fig. 1 and 4. Referring to fig. 1 and 4, the transmission section 41 and the first working section 42, and the fixed section 51 and the second working section 52 are connected by the connecting flange 44. Through setting up flange 44, not only increased the connection area between transmission section 41 and the first working segment 42, between canned paragraph 51 and the second working segment 52, still improved the joint strength between transmission section 41 and the first working segment 42, between canned paragraph 51 and the second working segment 52, improved the wholeness.

In some embodiments, the wind lever 50 may be configured as shown in fig. 4 to 5. Referring to fig. 4 to 5, a plurality of air outlets 53 are uniformly arranged around the axial direction of the second working section 52, and an opening direction (i.e., an air outlet direction) of the air outlet 53 forms an included angle with the axial direction of the second working section 52. It can be understood that the inclined direction of the air outlet 53 is certainly towards the inner wall of the nodular cast iron pipe, and the air outlet direction is back to the air rod 50, so that the purging effect is ensured; the uniformity of air-out can be guaranteed to the evenly distributed of air outlet 53 to guarantee to sweep the going department of in-process residue, improve and sweep the effect.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.