Cleaning device for water supply and drainage engineering construction

By designing convenient connection components in the pipeline cleaning equipment, the problem of low efficiency of water spray nozzle replacement is solved, the rapid disassembly and assembly of water spray nozzles and water pump water pipes is realized, and external impurities prevention is prevented, improving the efficiency of pipeline cleaning.

CN222153245UActive Publication Date: 2024-12-13湖北地环勘察设计院有限公司
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Patent Information

Application Number
CN202420663137.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-02
Publication Date
2024-12-13
Estimated Expiration
2034-04-02

AI Technical Summary

Technical Problem

When replacing the water spray nozzle, existing pipe cleaning equipment has low disassembly and replacement efficiency due to tight thread connections, and residual water stains and debris on the surface lead to difficulty in operation, which affects cleaning efficiency.

Method used

A connection component including a docking unit, a locking unit and a locking unit is designed. By docking the cylinder column, a curved telescopic groove and a locking slot, the water jet nozzle and the water pump pipe are easily disassembled and installed, and the sealing ring sheet avoids the outside. Impurities enter.

Benefits of technology

The rapid disassembly and assembly of the water jet nozzle and the water pump pipe is realized, which reduces the operating force, improves the replacement efficiency, avoids the entry of external impurities, and ensures the normal use of the equipment and the efficiency of pipeline cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is applicable to the technical field of pipeline cleaning equipment, and provides a cleaning device for water supply and drainage engineering construction, which comprises a water jet nozzle, a water pump water pipe and a connecting assembly, and the connecting assembly is used for realizing convenient disassembly and assembly of the water jet nozzle and the water pump water pipe; the connecting assembly comprises a butt joint unit, a locking unit and a blocking unit. The water jet nozzle and the water pump water pipe can be conveniently disassembled and assembled through the connecting assembly, compared with a traditional thread screwing structure, the replacement speed is higher, meanwhile, operation is easier and more labor-saving, when water stains exist on the outer surface and the water jet nozzle and the water pump water pipe are prone to slipping, disassembly and assembly can be easily achieved, and the water jet nozzle and the water pump water pipe can be conveniently and rapidly assembled and disassembled. Therefore, different types of water jet nozzles can be conveniently and rapidly replaced according to the pipeline condition, the pipeline cleaning efficiency is effectively improved, meanwhile, the butt joint groove is blocked through the blocking ring piece, external impurities are effectively prevented from entering the butt joint groove, and normal use of equipment is guaranteed.
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Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline cleaning equipment, in particular to a cleaning device for water supply and drainage engineering construction. Background Art

[0002] Pipeline desilting is to dredge the pipeline, clean the silt inside the pipeline, and keep it unobstructed for a long time to prevent urban waterlogging. Pipeline desilting has become an important task that cannot be ignored by the drainage department. If a large amount of debris and cement sand from infrastructure sites are discharged into the drainage pipe, sedimentation and siltation will cause the pipeline to be blocked. Failure to dredge and dredge the pipeline will cause sewage overflow, pollute the environment, and bring trouble to people's lives.

[0003] Pipeline dredging technologies mainly include winch dredging, water flushing dredging, high-pressure water jet cleaning, etc. Among them, high-pressure water jet cleaning is the leading equipment for industrial and civil pipeline cleaning in the world. High-pressure water jet cleaning uses a high-pressure water jet truck equipped with a large water tank, a motorized hose reel, a high-pressure water pump, a water jet nozzle, etc. During operation, the car engine drives the high-pressure pump to pressurize the water and send it into the water jet nozzle. The reaction force generated by the backward spray makes the water jet nozzle and the hose move in the opposite direction, and also cleans the pipe wall at the same time; when the nozzle reaches the downstream inspection well, the motorized winch retracts the hose, and the water jet nozzle continues to spray water to flush the remaining sediment to the downstream inspection well, which is sucked away by the sludge suction truck.

[0004] In the actual operation process, different types of water jetting nozzles are selected according to the blockage situation inside the pipeline, such as: bulldozer nozzles, pangolin nozzles, standard nozzles, rotary nozzles, piercing nozzles, grenade nozzles, vibration nozzles, chain nozzles, etc. Sometimes, different nozzles need to be replaced to clean a section of pipeline, and the nozzle replacement frequency is relatively high. The connection between the water jetting nozzle and the water pipe of the high-pressure water pump is threaded and tightly connected, so that it takes a lot of effort to complete the disassembly during disassembly. At the same time, when replacing the shooter nozzle, there are residual water stains and debris on the surface of the shooter nozzle and the water pipe after they are taken out of the pipeline. Therefore, the surface of the shooter nozzle and the water pipe is slippery, which increases the difficulty of disassembling the shooter nozzle and makes the replacement efficiency of the shooter nozzle low. Based on this, a cleaning device for water supply and drainage engineering construction is provided. Utility Model Content

[0005] The utility model provides a cleaning device for water supply and drainage engineering construction, aiming to solve the problems mentioned in the above background technology.

[0006] The utility model is implemented as follows: a cleaning device for water supply and drainage engineering construction includes a water jet nozzle and a water pump water pipe. The water jet nozzle is composed of a nozzle body, a docking joint, and a docking lock block. The docking joint is fixed to one end of the nozzle body, and a plurality of docking lock blocks are circumferentially fixed to the outside of the docking joint. A connecting assembly is arranged on the outside of the water pump water pipe, and the connecting assembly is used to realize convenient disassembly and assembly of the water jet nozzle and the water pump water pipe.

[0007] The connection assembly includes a docking unit, a locking unit and a blocking unit;

[0008] The docking unit is used to achieve preliminary docking between the docking joint and the water pump water pipe;

[0009] The locking unit reset to the initial position is used to fix the joint and the water pipe of the water pump;

[0010] The blocking unit reset to the initial position is used to block the port of the docking unit to prevent external impurities from entering the docking unit. The deflected blocking unit is used to unblock the port of the docking unit to facilitate the insertion of the docking lock block into the docking unit.

[0011] Preferably, the docking unit comprises a docking column, a docking slot, an arc-shaped telescopic slot, and a locking slot;

[0012] The docking column is fixed to the outside of the water pump water pipe, and one end of the docking column is flush with the end surface of the water pump water pipe;

[0013] The docking slot is provided at one end of the docking column, the arc-shaped telescopic slot is provided at the other end of the docking slot and is vertically distributed with the docking column, and the locking slot is provided at one end of the locking slot close to the docking slot;

[0014] The docking groove, arc-shaped telescopic groove and locking groove all pass through the inner and outer sides of the docking column, and are in an inverted "F" shape as a whole. The docking lock block moves from the docking groove and the arc-shaped telescopic groove to the locking groove to achieve a preliminary connection between the docking joint and the water pump water pipe.

[0015] Preferably, the locking unit comprises a return spring, an arc-shaped locking strip and an outer connecting ring block;

[0016] The arc-shaped locking strip is slidably installed inside the arc-shaped telescopic slot, the return spring is installed on one side of the arc-shaped locking strip and distributed inside the side of the arc-shaped telescopic slot away from the locking slot, and the arc-shaped locking strip in the initial position blocks the port of the locking slot, so as to realize the connection reinforcement between the joint and the water pipe of the water pump;

[0017] The outer connecting ring block is sleeved on the outer side of the docking tube column and is fixedly connected with a plurality of arc-shaped locking strips, and is used for driving the plurality of arc-shaped locking strips to move synchronously.

[0018] Preferably, the blocking unit comprises a blocking ring sheet and a through notch;

[0019] The sealing ring is fixed to one end of the external connecting ring block and fits onto the end face of the docking tube column. The through slot is opened at one end of the sealing ring and completely penetrates the sealing ring. When the through slot is misaligned with the docking groove, the sealing ring seals the docking groove. When the through slot is aligned with the docking groove, it is used to unblock the docking groove.

[0020] Preferably, the docking grooves, arc-shaped expansion grooves, and locking card grooves are provided in multiple groups and match the number of docking locking blocks. The multiple groups of docking grooves, arc-shaped expansion grooves, and locking card grooves are distributed in a ring on the docking tube column. The number of the through slots matches the number of docking grooves, and multiple through slots are distributed in a ring on the sealing ring sheet.

[0021] Preferably, the outer wall diameter of the docking joint matches the inner wall diameter of the docking tube column, the inner wall diameter of the docking joint matches the outer wall diameter of the water pump water pipe, and the distance between the docking locking block and the nozzle body is greater than the depth from the docking groove to the arc-shaped expansion groove, and the distance from the docking locking block to the end of the docking joint is less than the depth from the arc-shaped expansion groove to the inner end face of the docking tube column.

[0022] Preferably, the width of the docking groove and the locking slot matches the width of the docking lock block, the depth of the arc-shaped telescopic groove and the locking slot matches the length of the docking lock block, and the thickness of the docking lock block matches the thickness of the wall of the docking column.

[0023] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0024] The utility model discloses to disassemble and install the water jet nozzle and the water pump water pipe conveniently by setting the connection component. Compared with the traditional threaded tightening structure, not only the replacement speed is faster, but also the operation is easier and more labor-saving. When there are water stains and slippery on the outer surface, it can also be easily disassembled and installed, so as to facilitate the rapid replacement of water jet nozzles of different types according to the pipeline conditions, effectively improve the pipeline cleaning efficiency, and at the same time, the sealing ring piece blocks the docking groove, effectively preventing external impurities from entering the docking groove, thereby ensuring the normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram provided by the utility model;

[0026] Figure 2 This is a schematic diagram of the disassembled state of the water jet nozzle and the water pump water pipe provided by the utility model;

[0027] Figure 3 It is a structural exploded diagram of the connection assembly provided by the utility model.

[0028] In the figure: 1. water jet nozzle; 101. nozzle body; 102. docking joint; 103. docking lock block; 2. water pump water pipe; 3. connection assembly; 301. docking cylinder; 302. docking groove; 303. arc-shaped telescopic groove; 304. locking slot; 305. reset spring; 306. arc-shaped locking strip; 307. external connection ring block; 308. sealing ring; 309. through-slot. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] The utility model provides a cleaning device for water supply and drainage engineering construction, such as Figure 1-3 As shown, it includes a water jet nozzle 1 and a water pump water pipe 2. The water jet nozzle 1 is composed of a nozzle body 101, a docking joint 102, and a docking lock block 103. The docking joint 102 is fixed to one end of the nozzle body 101, and a plurality of docking lock blocks 103 are circumferentially fixed to the outer side of the docking joint 102. A connecting component 3 is provided on the outer side of the water pump water pipe 2. The connecting component 3 is used to realize the convenient disassembly and assembly of the water jet nozzle 1 and the water pump water pipe 2.

[0032] The connection assembly 3 includes a docking unit, a locking unit and a blocking unit;

[0033] The docking unit is used to achieve preliminary docking between the docking joint 102 and the water pump water pipe 2;

[0034] The locking unit reset to the initial position is used to fix the joint 102 and the water pump water pipe 2;

[0035] The blocking unit reset to the initial position is used to block the port of the docking unit to prevent external impurities from entering the docking unit, and the deflected blocking unit is used to unblock the port of the docking unit to facilitate the insertion of the docking lock block 103 into the docking unit;

[0036] The docking unit includes a docking column 301, a docking slot 302, an arc-shaped telescopic slot 303, and a locking slot 304;

[0037] The docking column 301 is fixed to the outside of the water pump water pipe 2, and one end of the docking column 301 is flush with the end surface of the water pump water pipe 2;

[0038] The docking slot 302 is provided at one end of the docking column 301, the arc-shaped telescopic slot 303 is provided at the other end of the docking slot 302 and is vertically distributed with the docking column 301, and the locking slot 304 is provided at one end of the locking slot 304 close to the docking slot 302;

[0039] The docking groove 302, the arc-shaped telescopic groove 303, and the locking groove 304 all penetrate the inner and outer sides of the docking column 301, and the whole is in an inverted "F" shape. The docking lock block 103 moves from the docking groove 302 and the arc-shaped telescopic groove 303 to the locking groove 304 to achieve the preliminary connection between the docking joint 102 and the water pump water pipe 2;

[0040] The locking unit includes a return spring 305, an arc-shaped locking strip 306 and an outer connecting ring block 307;

[0041] The arc-shaped locking strip 306 is slidably installed inside the arc-shaped telescopic groove 303, and the return spring 305 is installed on one side of the arc-shaped locking strip 306 and distributed inside the side of the arc-shaped telescopic groove 303 away from the locking card groove 304. The arc-shaped locking strip 306 at the initial position blocks the port of the locking card groove 304, so as to realize the connection reinforcement between the joint 102 and the water pump water pipe 2;

[0042] The outer connecting ring block 307 is sleeved on the outer side of the docking column 301 and fixedly connected to the plurality of arc-shaped locking strips 306, and is used to drive the plurality of arc-shaped locking strips 306 to move synchronously;

[0043] The blocking unit includes a blocking ring piece 308 and a through slot 309;

[0044] The sealing ring piece 308 is fixed to one end of the external connecting ring block 307 and fits against the end face of the docking column 301. The through slot 309 is opened at one end of the sealing ring piece 308 and completely penetrates the sealing ring piece 308. When the through slot 309 is misaligned with the docking groove 302, the sealing ring piece 308 seals the docking groove 302. When the through slot 309 is aligned with the docking groove 302, it is used to unblock the docking groove 302.

[0045] In this embodiment.

[0046] In a further preferred embodiment of the present invention, Figure 1-3 As shown, there are multiple groups of docking grooves 302, arc-shaped telescopic grooves 303, and locking grooves 304, and they match the number of docking locking blocks 103. Multiple groups of docking grooves 302, arc-shaped telescopic grooves 303, and locking grooves 304 are distributed in a ring on the docking column 301. The number of through slots 309 matches the number of docking grooves 302, and multiple through slots 309 are distributed in a ring on the sealing ring piece 308.

[0047] In the present embodiment, when it is necessary to connect the water jet nozzle 1 with the water pump water pipe 2, one hand holds the water jet nozzle 1, and the other hand rotates the external connection ring block 307 (it should be supplemented that: the water pump water pipe 2 is connected to the water pump, and when the external connection ring block 307 is rotated, the water pump water pipe 2 can remain relatively motionless). When the external connection ring block 307 rotates, it can synchronously drive multiple arc-shaped locking strips 306 and the blocking ring piece 308 to rotate synchronously. The arc-shaped locking strip 306 moves along the arc-shaped telescopic groove 303 and squeezes the reset spring 305 to make it shrink. Finally, the arc-shaped locking strip 306 and the docking groove 302 are in a misaligned state. At this time, the arc-shaped locking strip 306 blocks the docking groove 302. At the same time, the blocking ring piece 308 rotates to align the through-notch 309 with the docking groove 302, thereby releasing the blockage of the other end of the docking groove 302.

[0048] Then, align the docking lock block 103 with the docking groove 302 and insert it, and insert the docking joint 102 into the inner side of the docking column 301 and sleeve it on the outer side of the water pump pipe 2. When the docking lock block 103 moves to the inside of the arc-shaped telescopic groove 303, rotate the shooter nozzle 1 so that the docking lock block 103 moves along the arc-shaped telescopic groove 303 toward the locking card groove 304. When the docking lock block 103 is aligned with the locking card groove 304, pull the shooter nozzle 1 outward so that the docking lock block 103 is stuck in the locking card groove 304. At this time, the preliminary connection between the water jet nozzle 1 and the water pump pipe 2 is achieved;

[0049] After that, the rotation of the external connection ring block 307 is released, and the arc-shaped locking strip 306, the external connection ring block 307, and the blocking ring piece 308 are automatically reset under the elastic force of the reset spring 305, and the arc-shaped locking strip 306 moves to the bottom of the locking slot 304 to limit the docking lock block 103, thereby achieving the connection reinforcement between the water jet nozzle 1 and the water pump water pipe 2, and the blocking ring piece 308 rotates to make the through-notch 309 misaligned with the docking slot 302, thereby achieving the blocking of the docking slot 302 port to prevent external impurities from entering the docking slot during later use;

[0050] Through the coordination of the above multiple parts, the water jet nozzle 1 and the water pump water pipe 2 can be conveniently disassembled and assembled. Compared with the traditional threaded tightening structure, not only the replacement speed is faster, but also the operation is easier and more labor-saving. When there are water stains and easy to slip on the outer surface, it can also be easily disassembled and installed, so that different models of water jet nozzles 1 can be quickly replaced according to the pipeline conditions, effectively improving the pipeline cleaning efficiency.

[0051] In a further preferred embodiment of the present invention, Figure 2-3 As shown, the outer wall diameter of the docking joint 102 matches the inner wall diameter of the docking column 301, the inner wall diameter of the docking joint 102 matches the outer wall diameter of the water pump water pipe 2, and the distance between the docking locking block 103 and the nozzle body 101 is greater than the depth from the docking groove 302 to the arc-shaped expansion groove 303, and the distance from the docking locking block 103 to the end of the docking joint 102 is less than the depth from the arc-shaped expansion groove 303 to the inner end face of the docking column 301.

[0052] In this embodiment, after the docking joint 102 is installed inside the docking column 301, the docking joint 102 and the water pump water pipe 2 are docked, and there is good sealing between them.

[0053] At the same time, through the structure that the distance between the docking locking block 103 and the nozzle body 101 is greater than the depth from the docking groove 302 to the arc-shaped expansion groove 303, and the structure that the distance from the docking locking block 103 to the end of the docking joint 102 is less than the depth from the arc-shaped expansion groove 303 to the inner end face of the docking column 301, the docking joint 102 inserted into the docking column 301 will not collide with the inner end face of the docking column 301, and the nozzle body 101 will not collide with the sealing ring 308, thereby ensuring smooth installation of the water jet nozzle 1.

[0054] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the width of the docking groove 302 and the locking groove 304 matches the width of the docking lock block 103, the depth of the arc-shaped telescopic groove 303 and the locking groove 304 matches the length of the docking lock block 103, and the thickness of the docking lock block 103 matches the wall thickness of the docking column 301.

[0055] In the present embodiment, this structure enables the docking lock block 103 to be inserted into the locking slot 304 and maintain a stable locking state without shaking, thereby ensuring that the water jet nozzle 1 is stably installed.

[0056] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0057] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0058] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A cleaning device for water supply and drainage engineering construction, comprising a water jet nozzle (1), a water pump and a water pipe (2), It is characterized in that The water jet nozzle (1) is composed of a nozzle body (101), a docking joint (102), and a docking locking block (103); the docking joint (102) is fixed to one end of the nozzle body (101); a plurality of docking locking blocks (103) are circumferentially fixed to the outside of the docking joint (102); a connecting assembly (3) is provided on the outside of the water pump water pipe (2); the connecting assembly (3) is used to realize convenient disassembly and assembly of the water jet nozzle (1) and the water pump water pipe (2); The connection assembly (3) comprises a docking unit, a locking unit and a blocking unit; The docking unit is used to achieve preliminary docking between the docking joint (102) and the water pump water pipe (2); The locking unit reset to the initial position is used to fix the joint (102) and the water pump water pipe (2); The blocking unit reset to the initial position is used to block the port of the docking unit to prevent external impurities from entering the docking unit, and the deflected blocking unit is used to unblock the port of the docking unit to facilitate the insertion of the docking lock block (103) into the docking unit.

2. A cleaning device for water supply and drainage engineering construction as claimed in claim 1, It is characterized in that The docking unit comprises a docking column (301), a docking slot (302), an arc-shaped telescopic slot (303), and a locking slot (304); The docking column (301) is fixed to the outside of the water pump water pipe (2), and one end of the docking column (301) is flush with the end surface of the water pump water pipe (2); The docking groove (302) is provided at one end of the docking column (301), the arc-shaped telescopic groove (303) is provided at the other end of the docking groove (302) and is vertically distributed with respect to the docking column (301), and the locking slot (304) is provided at one end of the locking slot (304) close to the docking groove (302); The docking groove (302), the arc-shaped telescopic groove (303), and the locking groove (304) all penetrate the inner and outer sides of the docking column (301), and are in an inverted "F" shape as a whole. The docking lock block (103) moves from the docking groove (302) and the arc-shaped telescopic groove (303) to the locking groove (304) to achieve a preliminary connection between the docking joint (102) and the water pump water pipe (2).

3. A cleaning device for water supply and drainage engineering construction as claimed in claim 2, It is characterized in that The locking unit comprises a return spring (305), an arc-shaped locking strip (306) and an external connecting ring block (307); The arc-shaped locking strip (306) is slidably installed inside the arc-shaped telescopic groove (303), and the return spring (305) is installed on one side of the arc-shaped locking strip (306) and distributed inside the side of the arc-shaped telescopic groove (303) away from the locking card groove (304). The arc-shaped locking strip (306) located in the initial position blocks the port of the locking card groove (304), so as to realize the connection reinforcement between the joint (102) and the water pump water pipe (2); The outer connecting ring block (307) is sleeved on the outer side of the docking tube column (301) and is fixedly connected to the plurality of arc-shaped locking strips (306), and is used to drive the plurality of arc-shaped locking strips (306) to move synchronously.

4. A cleaning device for water supply and drainage engineering construction as claimed in claim 3, It is characterized in that The blocking unit comprises a blocking ring (308) and a through notch (309); The blocking ring piece (308) is fixed to one end of the external connection ring block (307) and fits the end face of the docking tube column (301); the through slot (309) is provided at one end of the blocking ring piece (308) and completely penetrates the blocking ring piece (308); when the through slot (309) and the docking groove (302) are misaligned, the blocking ring piece (308) can seal the docking groove (302); when the through slot (309) and the docking groove (302) are aligned, the blocking of the docking groove (302) can be released.

5. A cleaning device for water supply and drainage engineering construction as claimed in claim 4, It is characterized in that The docking groove (302), the arc-shaped telescopic groove (303), and the locking card groove (304) are provided in multiple groups and match the number of the docking lock block (103); the multiple groups of the docking grooves (302), the arc-shaped telescopic grooves (303), and the locking card grooves (304) are distributed in an annular manner on the docking cylinder column (301); the number of the through-notches (309) matches the number of the docking grooves (302), and the multiple through-notches (309) are distributed in an annular manner on the blocking ring piece (308).

6. A cleaning device for water supply and drainage engineering construction as claimed in claim 2, It is characterized in that The outer wall diameter of the docking joint (102) matches the inner wall diameter of the docking column (301), the inner wall diameter of the docking joint (102) matches the outer wall diameter of the water pump water pipe (2), and the distance between the docking locking block (103) and the nozzle body (101) is greater than the depth from the docking groove (302) to the arc-shaped expansion groove (303), and the distance from the docking locking block (103) to the end of the docking joint (102) is less than the depth from the arc-shaped expansion groove (303) to the inner end surface of the docking column (301).

7. A cleaning device for water supply and drainage engineering construction as claimed in claim 2, It is characterized in that The widths of the docking groove (302) and the locking groove (304) match the width of the docking lock block (103); the depths of the arc-shaped telescopic groove (303) and the locking groove (304) match the length of the docking lock block (103); and the thickness of the docking lock block (103) matches the thickness of the wall of the docking column (301).