Pipe cleaning device

Abstract

The invention provides a pipeline cleaning device, including a rotating body with a water outlet hole opened inside, the water inlet end of the rotating body is connected to the water inlet head, the rotating body includes a rotating main shaft and an outer shell, the main shaft water outlet end of the rotating main shaft passes through the cavity inside the outer shell, the outer wall of the rotating main shaft is sleeved with an expansion sleeve, the outer wall of the expansion sleeve is connected to the inner wall of the second synchronous pulley, the second synchronous pulley is connected to the first synchronous pulley through a synchronous belt, the first synchronous pulley has an axial hole for the drive shaft to pass through, the driving mechanism drives the drive shaft to rotate, and also includes an aluminum cover, the aluminum cover is located between the water outlet end of the main shaft and the outer shell. The pipeline cleaning device created by the invention has a simple structure, low maintenance cost, a wide cleaning range, and is suitable for a variety of different driving modes, and is highly practical.

Description

Technical Field

[0001] The invention belongs to the field of cleaning equipment, and in particular relates to a pipeline cleaning device. Background Art

[0002] The development of China's industrial cleaning industry started in the 1980s, far behind developed countries such as Europe and the United States, which have a history of nearly 100 years. With the acceleration of my country's reform and opening up and modernization construction, as well as the strengthening of people's awareness of environmental protection, high-pressure water jet cleaning technology is being accepted by more and more companies. The main reasons are three aspects: fast cleaning speed, good cleaning effect, and no secondary pollution after cleaning.

[0003] The rotary high-pressure cleaning equipment has the characteristics of cleaning while rotating, and its cleaning efficiency is very high. The cleaning range and area can be adjusted according to the needs, and it is very practical. The existing rotary high-pressure cleaning equipment has a complex structure, is not easy to operate, and has a short service life of the rotating body and high maintenance cost. Therefore, there is an urgent need for a cleaning equipment with a simple structure, low maintenance cost and a wide cleaning range. Summary of the invention

[0004] In view of this, the invention aims to provide a pipeline cleaning device with simple structure, low maintenance cost, wide cleaning range, and adaptability to a variety of different driving modes and strong practicality.

[0005] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0006] A pipeline cleaning device comprises a rotating body with a water outlet through hole opened inside, the water inlet end of the rotating body is connected to the water inlet head, the rotating body comprises a rotating main shaft and an outer shell, the main shaft water outlet end of the rotating main shaft passes through the cavity inside the outer shell, the outer wall of the rotating main shaft is sleeved with an expansion sleeve, the outer wall of the expansion sleeve is connected to the inner wall of the second synchronous pulley, the second synchronous pulley is connected to the first synchronous pulley through a synchronous belt, the first synchronous pulley has an axial hole for accommodating a drive shaft to pass through, the driving mechanism drives the drive shaft to rotate, and also comprises an aluminum cover, the aluminum cover is located between the water outlet end of the main shaft and the outer shell.

[0007] Furthermore, the driving mechanism includes an air motor, the output shaft of the air motor passes through the shaft hole, and an air pipe joint is provided at the bottom of the air motor.

[0008] Furthermore, the driving mechanism includes a pneumatic handle, the rotating end of the pneumatic handle passes through the axial hole, and the bottom of the pneumatic handle is provided with a quick-insert air pipe connector and an air pipe connector 2.

[0009] Furthermore, it also includes a nozzle, the water outlet end of the main shaft extends into the nozzle, and a plurality of water spraying channels are opened in the nozzle, one end of the water spraying channel is connected to the water outlet through hole, and the other end of the water spraying channel is connected to the spray hole.

[0010] Furthermore, the rotating body also includes a rotating sealing shaft with a water outlet hole opened inside, the water outlet end of the sealing shaft extends into the water inlet end of the main shaft, the outer wall of the water inlet end of the main shaft is connected to the inner wall of the bearing sleeve, the outer wall of the bearing sleeve on the side close to the water outlet end of the main shaft is rotatably connected to the second bearing, the outer wall of the bearing sleeve on the side away from the water outlet end of the main shaft is sequentially connected to the outer shell with a second skeleton oil seal and a copper ring, the water inlet end of the sealing shaft passes through the bearing sleeve, the second skeleton oil seal and the copper ring and is connected to the inner wall of the sealing ring, and the outer wall of the sealing ring is connected to the inner wall of the water inlet hole of the water inlet head.

[0011] Furthermore, the outer wall of one end of the water inlet head close to the rotating main shaft is connected to the locking nut, the inner wall of the locking nut is threadedly connected to the outer wall of the shell, and the shell has a cavity for accommodating the water inlet end of the main shaft, the bearing sleeve, the rotating sealing shaft, and the copper ring.

[0012] Furthermore, a third boss and a fourth boss are sequentially provided on the side of the rotating main shaft close to the water inlet end of the main shaft, the outer wall of the fourth boss is rotatably connected to a bearing 1, the side wall of the bearing 1 away from the third boss is connected to a skeleton oil seal 1, and the outer walls of the skeleton oil seal 1 and the bearing 1 are both connected to the inner wall of the outer shell.

[0013] Furthermore, the outer wall of the rotary sealing shaft is provided with a second boss and a first boss in sequence, and the outer diameter of the second boss is larger than the outer diameter of the first boss.

[0014] Furthermore, a clamping block is provided on the inner wall of the bearing sleeve, and the clamping block is located between the third boss and the second boss, and the clamping block abuts against the side wall of the second boss.

[0015] Furthermore, a through hole is formed in the water inlet end of the main shaft to accommodate the water outlet end of the sealing shaft, and the inner diameter of the through hole is larger than the inner diameter of the water outlet through hole of the rotating main shaft.

[0016] Furthermore, an O-ring is provided between the bearing sleeve and the copper ring, and between the sealing ring and the water inlet through hole.

[0017] Furthermore, the outer walls of the second bearing and the copper ring are connected to the inner wall of the outer shell.

[0018] Furthermore, the outer diameter of the third boss is greater than the outer diameter of the fourth boss.

[0019] Furthermore, the rotary sealing shaft is made of a material with a Rockwell hardness HRC greater than 50.

[0020] Furthermore, the inner diameter of the spray hole is larger than the inner diameter of the water spray channel.

[0021] Furthermore, the number of the spray holes is two, and the two spray holes are respectively located above and below the water outlet end of the main shaft.

[0022] Compared with the prior art, the pipeline cleaning device created by the present invention has the following advantages:

[0023] (1) The pipeline cleaning device created by the present invention has a simple structure, low maintenance cost, a wide cleaning range, and is suitable for a variety of different driving modes, and is highly practical.

[0024] (2) The pipeline cleaning device created by the present invention has a plurality of spray holes at different angles designed at the nozzle, so that the cleaning device has a wide cleaning range and high cleaning efficiency.

[0025] (3) In the pipeline cleaning device created by the present invention, the rotating main shaft and the rotating sealing shaft are separately arranged. When the rotating sealing shaft is damaged, only the rotating sealing shaft needs to be replaced while the original rotating main shaft is retained for continued use, thereby saving costs, being simple to operate, and having good sealing performance.

[0026] (4) The pipeline cleaning device created by the present invention realizes multi-layer sealing by arranging sealing rings, O-rings, bearing sleeves, skeleton oil seals, copper rings, etc., thereby preventing fluid leakage from adjacent joint surfaces and preventing external impurities such as dust and moisture from invading, and has a good sealing effect.

[0027] (5) The pipeline cleaning device created by the present invention limits the second boss of the rotating sealing shaft by means of a block inside the bearing sleeve, thereby preventing the rotating sealing shaft from continuously moving toward the rotating main shaft under the impact of water flow and causing damage, and has good stability and high safety.

[0028] (6) In the pipeline cleaning device created by the present invention, the inner diameter of the through hole through which the water outlet end of the rotating shaft extends from the water inlet end of the main shaft is larger than the inner diameter of the water outlet through hole, which can not only make the rotating sealing shaft tightly connected with the inner wall of the rotating main shaft, but also limit the rotating sealing shaft to prevent the rotating sealing shaft from continuously extending into the water inlet end of the main shaft and causing damage, and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0030] Figure 1 A cross-sectional view of a pipeline cleaning device using an air motor according to an embodiment of the present invention;

[0031] Figure 2A front view of an air motor used in a pipeline cleaning device according to an embodiment of the present invention;

[0032] Figure 3 A cross-sectional view of a pipe cleaning device using a starting handle according to an embodiment of the present invention;

[0033] Figure 4 An exploded view of a pipeline cleaning device according to an embodiment of the present invention;

[0034] Figure 5 A cross-sectional view of a rotating body according to an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of a rotating body according to an embodiment of the present invention;

[0036] Figure 7 An exploded view of a rotating body according to an embodiment of the present invention;

[0037] Figure 8 A schematic diagram of a rotating main shaft and a rotating sealing shaft according to an embodiment of the present invention;

[0038] Fig. 9 The invention is created with the specification attached Figure 5 A is a partial enlarged schematic diagram of the middle part.

[0039] Description of reference numerals:

[0040] 1-rotating body; 11-water inlet head; 111-water inlet through hole; 12-housing; 13-rotating main shaft; 131-main shaft water outlet end; 132-third boss; 133-main shaft water inlet end; 134-fourth boss; 135-through hole; 136-water outlet through hole; 14-rotating sealing shaft; 141-sealing shaft water outlet end; 142-sealing shaft water inlet end; 143-second boss; 144-first boss; 15-locking nut; 16-bearing two; 17-skeleton oil seal one; 18-bearing two; 19-bearing sleeve; 191-block; 20-skeleton oil seal two; 21-O-ring one; 22-copper ring; 23-sealing ring; 24-O-ring 2; 3-synchronous pulley 1; 31-shaft hole; 4-synchronous belt; 5-synchronous pulley 2; 6-expansion sleeve; 7-aluminum cover; 8-spray head; 81-water spray channel; 82-spray hole; 9-driving mechanism; 91-air motor; 92-air pipe connector 1; 93-pneumatic handle; 94-air pipe connector 2; 95-quick-connect air pipe connector; 96-output shaft; 97-rotating end. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0045] like Figures 1 to 9 As shown, the pipeline cleaning device includes a rotating body 1 with a water outlet through hole 136 opened inside, the water inlet end of the rotating body 1 is connected to the water inlet head 11, the rotating body 1 includes a rotating main shaft 13 and an outer shell 12, the main shaft water outlet end 131 of the rotating main shaft 13 passes through the cavity inside the outer shell 12, the outer wall of the rotating main shaft 13 is sleeved with an expansion sleeve 6, the outer wall of the expansion sleeve 6 is connected to the inner wall of the synchronous pulley 2 5, the synchronous pulley 2 5 is connected to the synchronous pulley 1 3 through the synchronous belt 4, the synchronous pulley 1 3 is provided with an axial hole 31 for accommodating the driving shaft to pass through, the driving mechanism 9 drives the driving shaft to rotate, and also includes an aluminum cover 7, which is located between the main shaft water outlet end 131 and the outer shell 12.

[0046] The cleaning device has a simple structure, low maintenance cost, a wide cleaning range, is suitable for a variety of different driving modes, and is highly practical.

[0047] The driving mechanism 9 includes an air motor 91 , an output shaft 96 of the air motor 91 passes through the shaft hole 31 , and an air pipe joint 92 is provided at the bottom of the air motor 9 .

[0048] The cleaning device can utilize an electric drive device such as an air motor 91 to provide drive, thereby realizing the cleaning of the rotating main shaft 13 and the rotating sealing shaft 14 while spraying water while rotating. It has a high degree of automation, can perform rotating cleaning for a long time, and has high cleaning efficiency.

[0049] The driving mechanism 9 includes a pneumatic handle 93 , a rotating end 97 of the pneumatic handle 93 passes through the axial hole 31 , and a quick-insert air pipe connector 95 and an air pipe connector II 94 are provided at the bottom of the pneumatic handle 93 .

[0050] The cleaning device can also be driven by a manual drive device such as a pneumatic handle 93, so as to realize the water spraying cleaning while the rotating main shaft 13 and the rotating sealing shaft 14 rotate. Manual drive is suitable for short-term or small-scale cleaning, with high flexibility and cost saving.

[0051] The cleaning device is suitable for a variety of different driving modes and has strong practicality and operability.

[0052] The nozzle 8 is also included. The main shaft water outlet end 131 extends into the nozzle 8. A plurality of water spraying channels 81 are opened in the nozzle 8. One end of the water spraying channel 81 is connected to the water outlet through hole 136, and the other end of the water spraying channel 81 is connected to the spray hole 82.

[0053] The inner diameter of the spray hole 82 is larger than the inner diameter of the water spray channel 81. The larger inner diameter of the spray hole 82 allows the sprayed water to clean a larger area, thereby improving the cleaning efficiency.

[0054] The number of the spray holes 82 is two, and the two spray holes 82 are respectively located above and below the main shaft water outlet end 131 .

[0055] A plurality of spray holes 82 with different angles are designed at the spray head 8, so that the cleaning device has a wide cleaning range and high cleaning efficiency.

[0056] The nozzle 8 is connected to the water outlet end 131 of the main shaft, and the nozzle 8 is provided with a plurality of spray holes 82 in different directions, thereby increasing the cleaning range, improving the cleaning efficiency and saving costs.

[0057] The rotating body 1 also includes a rotating sealing shaft 14 with a water outlet hole opened inside. The water outlet end 141 of the sealing shaft extends into the water inlet end 133 of the main shaft. The outer wall of the water inlet end 133 of the main shaft is connected to the inner wall of the bearing sleeve 19. The outer wall of the bearing sleeve 19 on the side close to the water outlet end 131 of the main shaft is rotatably connected to the second bearing 16. The outer wall of the bearing sleeve 19 on the side away from the water outlet end 131 of the main shaft is sequentially sleeved with a skeleton oil seal 20 and a copper ring 22. The water inlet end 142 of the sealing shaft passes through the bearing sleeve 19, the skeleton oil seal 20, and the copper ring 22 and is connected to the inner wall of the sealing ring 23. The outer wall of the sealing ring 23 is connected to the inner wall of the water inlet hole 111 of the water inlet head 11.

[0058] The rotating main shaft 13 and the rotating sealing shaft 14 are separately arranged. When the rotating sealing shaft 14 is damaged, only the rotating sealing shaft 14 needs to be replaced while the original rotating main shaft 13 is kept for continued use, thereby saving costs, being simple to operate, and having good sealing performance.

[0059] The outer wall of one end of the water inlet head 11 close to the rotating main shaft 13 is connected to the locking nut 15, and the inner wall of the locking nut 5 is threadedly connected to the outer wall of the outer shell 12. The outer shell 12 has a cavity for accommodating the water inlet end 133 of the main shaft, the bearing sleeve 19, the rotating sealing shaft 14, and the copper ring 22.

[0060] A third boss 132 and a fourth boss 134 are sequentially provided on one side of the rotating main shaft 13 close to the main shaft water inlet end 133. The outer wall of the fourth boss 134 is rotatably connected to a bearing 18. The side wall of the bearing 18 away from the third boss 132 is connected to a skeleton oil seal 17. The outer walls of the skeleton oil seal 17 and the bearing 18 are both connected to the inner wall of the outer shell 12.

[0061] Bearing 1 18 and bearing 2 16 allow the rotating main shaft 13 and the rotating sealing shaft 14 to rotate. The skeleton oil seal 1 17, skeleton oil seal 20, copper ring 22, sealing ring 23 and O-ring all play a role of layer-by-layer sealing to prevent water from overflowing from the rotating main shaft 13 and the rotating sealing shaft 14, and the sealing performance is good.

[0062] The outer wall of the rotary sealing shaft 14 is provided with a second boss 143 and a first boss 144 in sequence. The outer diameter of the second boss 143 is greater than the outer diameter of the second boss 144 .

[0063] Bosses of different sizes realize the clamping connection between the rotary sealing shaft 14 and the bearing sleeve 19 and the sealing ring 23, and limit the rotary sealing shaft 14 to prevent the sealing shaft 14 from loosening or sliding, and the safety and sealing performance are very good.

[0064] A clamping block 191 is disposed on the inner wall of the bearing sleeve 19 . The clamping block 191 is located between the third boss 132 and the second boss 143 . The clamping block 191 abuts against the side wall of the second boss 143 .

[0065] The second boss 143 of the rotary sealing shaft 14 is limited by the clamping block 191 inside the bearing sleeve 19 to prevent the rotary sealing shaft 14 from continuously moving toward the rotating main shaft 13 under the impact of water flow and causing damage, thereby achieving good stability and high safety.

[0066] A through hole 135 is formed in the main shaft water inlet end 133 to allow the sealing shaft water outlet end 141 to extend therein, and the inner diameter of the through hole 135 is larger than the inner diameter of the water outlet through hole 136 of the rotating main shaft 13 .

[0067] The inner diameter of the through hole 135 into which the sealing shaft water outlet end 141 extends from the main shaft water inlet end 133 is larger than the inner diameter of the water outlet through hole 136, which can not only make the rotating sealing shaft 14 tightly connected to the inner wall of the rotating main shaft 13, but also limit the rotating sealing shaft 14 to prevent the rotating sealing shaft 14 from continuously extending into the main shaft water inlet end 133 and causing damage, and has good stability.

[0068] O-rings are provided between the bearing sleeve 19 and the copper ring 22 , and between the sealing ring 23 and the water inlet through hole 111 .

[0069] By arranging the sealing ring 23, the O-ring, the bearing sleeve 19, the skeleton oil seal, the copper ring 22 and the like, a multi-layer sealing is achieved to prevent the leakage of the fluid from the adjacent joint surfaces and to prevent the intrusion of external impurities such as dust and moisture, and the sealing effect is good.

[0070] The outer walls of the bearing 2 16 and the copper ring 22 are connected to the inner wall of the housing 12 .

[0071] The outer diameter of the third boss 132 is greater than the outer diameter of the fourth boss 134, so as to better achieve the limiting and clamping of the bearing sleeve 19 and the bearing 18 to the rotating main shaft 13, and have good stability.

[0072] The rotary seal shaft 14 is made of a material with a Rockwell hardness HRC greater than 50.

[0073] The rotary seal shaft 14 made of a material with a Rockwell hardness HRC greater than 50 has high hardness and is not easily damaged, thereby increasing the service life of the rotating body, reducing the frequency of replacing the rotary seal shaft 14 , and reducing costs.

[0074] Specific use process:

[0075] When in use, a water source is connected to the water inlet head 11 , and the water entering from the water inlet head 11 passes through the water outlet holes of the rotating sealing shaft 14 and the rotating main shaft 13 and then is sprayed out from the various spray holes 82 of the spray head 8 .

[0076] At the same time, the driving mechanism 9 drives the driving shaft to rotate, thereby driving the synchronous pulley 1 3 to rotate. The synchronous pulley 1 3 drives the synchronous pulley 2 5 to rotate through the synchronous belt 4. The synchronous pulley 2 5 further drives the rotating main shaft 13 and the rotating sealing shaft 14, thereby realizing the rotating main shaft 13 while spraying water, which has higher cleaning efficiency and a larger cleaning area.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Pipeline cleaning device, characterized in that: The invention comprises a rotating body (1) with a water outlet through hole (136) formed inside, the water inlet end of the rotating body (1) being connected to a water inlet head (11), the rotating body (1) comprising a rotating main shaft (13) and a housing (12), the main shaft water outlet end (131) of the rotating main shaft (13) passing through a cavity inside the housing (12), the outer wall of the rotating main shaft (13) being sleeved with an expansion sleeve (6), the outer wall of the expansion sleeve (6) being connected to the inner wall of a second synchronous pulley (5), the second synchronous pulley (5) being connected to a first synchronous pulley (3) through a synchronous belt (4), the first synchronous pulley (3) being provided with an axial hole (31) for accommodating a driving shaft passing therethrough, the driving mechanism (9) driving the driving shaft to rotate, and the invention also comprises an aluminum cover (7), the aluminum cover (7) being located between the main shaft water outlet end (131) and the housing (12); The rotating body (1) also includes a rotating sealing shaft (14) with a water outlet through hole formed therein, the water outlet end (141) of the sealing shaft extends into the water inlet end (133) of the main shaft, the outer wall of the water inlet end (133) of the main shaft is connected to the inner wall of the bearing sleeve (19), the outer wall of the bearing sleeve (19) on one side close to the water outlet end (131) of the main shaft is rotatably connected to the second bearing (16), the outer wall of the bearing sleeve (19) on one side away from the water outlet end (131) of the main shaft is sequentially connected to the outer shell with the second skeleton oil seal (20) and the copper ring (22), the water inlet end (142) of the sealing shaft passes through the bearing sleeve (19), the second skeleton oil seal (20) and the copper ring (22) and is connected to the inner wall of the sealing ring (23), and the outer wall of the sealing ring (23) is connected to the inner wall of the water inlet through hole (111) of the water inlet head (11); The outer wall of one end of the water inlet head (11) close to the rotating main shaft (13) is connected to the locking nut (15), and the inner wall of the locking nut (15) is threadedly connected to the outer wall of the outer shell (12). The outer shell (12) has a cavity for accommodating the water inlet end (133) of the main shaft, the bearing sleeve (19), the rotating sealing shaft (14), and the copper ring (22); A third boss (132) and a fourth boss (134) are sequentially provided on one side of the rotating main shaft (13) close to the main shaft water inlet end (133); the outer wall of the fourth boss (134) is rotatably connected to a bearing 1 (18); a side wall of the bearing 1 (18) away from the third boss (132) is connected to a skeleton oil seal 1 (17); and the outer walls of the skeleton oil seal 1 (17) and the bearing 1 (18) are both connected to the inner wall of the housing (12); The outer wall of the rotary sealing shaft (14) is provided with a second boss (143) and a first boss (144) in sequence, and the outer diameter of the second boss (143) is greater than the outer diameter of the first boss (144).

2. The pipeline cleaning device according to claim 1, characterized in that: The driving mechanism (9) comprises an air motor (91), an output shaft (96) of the air motor (91) passes through the shaft hole (31), and an air pipe joint (92) is provided at the bottom of the air motor (91).

3. The pipeline cleaning device according to claim 1, characterized in that: The driving mechanism (9) comprises a pneumatic handle (93), a rotating end (97) of the pneumatic handle (93) passes through the axial hole (31), and a quick-insert air pipe connector (95) and an air pipe connector 2 (94) are provided at the bottom of the pneumatic handle (93).

4. The pipeline cleaning device according to claim 1, characterized in that: It also includes a spray head (8), wherein the main shaft water outlet end (131) extends into the spray head (8), and a plurality of spray channels (81) are provided in the spray head (8), one end of the spray channel (81) is connected to the water outlet through hole (136), and the other end of the spray channel (81) is connected to the spray hole (82).

5. The pipeline cleaning device according to claim 1, characterized in that: A clamping block (191) is provided on the inner wall of the bearing sleeve (19); the clamping block (191) is located between the third boss (132) and the second boss (143); the clamping block (191) abuts against the side wall of the second boss (143).

6. The pipeline cleaning device according to claim 1, characterized in that: A through hole (135) is provided in the water inlet end (133) of the main shaft for accommodating the water outlet end (141) of the sealing shaft to extend therein, and the inner diameter of the through hole (135) is larger than the inner diameter of the water outlet through hole (136) of the rotating main shaft (13).

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