CN106890828B

CN106890828B - Multifunctional pipe inner wall cleaning device and cleaning method thereof

Info

Publication number: CN106890828B
Application number: CN201710197622.1A
Authority: CN
Inventors: 温继伟; 裴向军; 陈晨; 陈宝义; 张文; 袁进科; 何智浩; 任童
Original assignee: Jilin University; Chengdu Univeristy of Technology
Current assignee: Jilin University; Chengdu Univeristy of Technology
Priority date: 2017-03-29
Filing date: 2017-03-29
Publication date: 2023-05-30
Anticipated expiration: 2037-03-29
Also published as: CN106890828A

Abstract

The invention relates to a multifunctional pipe inner wall cleaning device and a cleaning method thereof, wherein the device comprises a spraying cylinder, a pipe cleaner, a travelling mechanism and a central shaft which are coaxially arranged; a cavity is arranged in the spray cylinder; the central shaft passes through the cavity and is communicated with the cavity; the periphery of the spray cylinder is provided with a plurality of spray head components, and the spray head components are communicated with the cavity; a steel brush component is arranged on the periphery of the spray cylinder; the two ends of the central shaft are provided with walking joints communicated with the central shaft, one end of the pipe cleaner, which is close to the spray cylinder, is a liquid outlet end, one end of the central shaft is connected and communicated with the liquid outlet end through a corresponding walking joint, and the other end of the central shaft is provided with a plug corresponding to the walking joint; the travelling mechanisms are arranged on the travelling joints in a one-to-one correspondence manner; the spray directions of the spray nozzle assemblies are consistent in radial direction and are obliquely arranged towards the inner wall of the pipe tool to be cleaned and the pipe cleaner. The advantages are that: the inner wall of the pipe fitting is cleaned in an all-round manner by utilizing a multi-process combined cleaning mode of high-pressure jet cleaning and propelling, scraping by the steel brush assembly and scraping by the pipe cleaner, and the pipe fitting cleaning device has the advantages of environmental protection, high efficiency, energy conservation and the like.

Description

Multifunctional pipe inner wall cleaning device and cleaning method thereof

Technical Field

The invention relates to the technical fields of grouting, non-excavation, geological disaster management, scientific drilling, resource and energy exploration and development, oil and gas storage and transportation, underground engineering and other engineering, in particular to a multifunctional pipe inner wall cleaning device and a cleaning method thereof.

Background

Grouting (Grouting), also called Grouting (grouping), mainly comprises a static pressure Grouting (Static Pressure Grouting), a high pressure Injection Grouting (High Pressure Jet Grouting) and the like, and is a common technical means for reinforcing and preventing rock and soil bodies, controlling geological disasters and protecting geological environment in the engineering fields of water conservancy and hydropower, transportation, construction, mine and the like; the non-excavation technology (Trenchless Technology or No-Dig) is used for detecting, paving, repairing or replacing the underground pipeline under the condition of micro-excavation or non-excavation, has a series of significant advantages which are incomparable with the conventional open-cut construction, and is an environment-friendly new technology for constructing the underground pipeline with great development potential; scientific drilling (Scientific Drilling) comprises continental scientific drilling, oceanic scientific drilling, polar scientific drilling, ectosphere scientific drilling and the like in a broad sense, has great significance on human beings to better study a series of scientific problems of resources, disasters, environments and the like faced by the human beings such as the internal structure of the earth and the ectosphere, disaster early warning, deep mineral resources, climate evolution, life evolution and the like and to be solved urgently, can greatly promote the development of the earth science and related disciplines, and is taken as a telescope extending into the earth by taking continental scientific drilling as an example; solid mineral Resources (Solid Mineral Resources), water Resources (Water Resources), oil and Gas Resources (Oil and Gas Resources), oil Shale (Oil shales), shale Gas (shales), natural Gas hydrates (also known as "combustible ice", natural Gas Hydrate), geothermal Resources (Geothermal Resources, including hot dry rock HDR), and underground works (Underground Engineering), including foundation works (Foundation Engineering), tunnel works (Tunnel Engineering), subways (Metro), and the like. The smooth implementation of the above fields is free from drilling (well) technology and pipe tools, wherein the pipe tools mainly refer to components with through round holes inside such as pipelines, drill pipes, casings and the like.

Specifically, in the implementation processes of grouting, non-excavation, geological disaster management, scientific drilling, exploration and development of solid mineral resources, water resources and oil gas resources (including unconventional energy sources), underground engineering and the like, holes with certain specifications are required to be drilled in a rock-soil body (stratum) by utilizing a drilling (well) technology, and in the process, in order to establish a junction between surface drilling equipment and an underground rock breaking tool, drill rods are required for achieving the purposes of transmitting drilling pressure and torque, conveying flushing medium, extracting rock (ore) cores, prolonging drilling tools and the like; in addition, in the implementation process of drilling (well), when the plugging of the drilling against the mud guard wall is difficult to be effective when the drilling meets the complex stratum, a casing is often needed to be put down so as to ensure the smooth implementation of the drilling (well) operation; the use and daily maintenance conditions of the drill rod and the sleeve can directly determine the working conditions and the service lives of the drill rod and the sleeve, so that the drill rod and the sleeve are prevented from being corroded and damaged by slurry, cement paste, an oxidation corrosion layer and the like adhered to the inner wall of the drill rod and the sleeve or the internal channel of the drill rod and the sleeve is prevented from being blocked by a concretion body, and the smooth implementation of drilling (well) operation is ensured, so that the inner wall of the drill rod and the sleeve is very necessary to be cleaned. Specifically, in the implementation in the above-described fields, such as: the transportation of fluid or fluid-solid coupling media such as petroleum, natural gas, shale oil/gas, water, ore pulp and the like, especially long-distance transportation, and the pipeline is an indispensable transportation medium; in addition, a large number of pipelines laid on the ground surface and buried underground can cause a plurality of problems that sludge, scaling, corrosion, rust and the like affect the normal operation of a pipeline system more or less on the inner wall after a certain period of use, and in order to prolong the service life of the pipeline and ensure the normal daily supply of water, petroleum, natural gas and the like, the pipelines need to be cleaned, repaired or replaced, and the inner wall of the pipeline needs to be cleaned firstly when the processes are smoothly implemented.

The existing pipe cleaning device can not thoroughly clean the inner wall of the pipe, the cleaning method is single, the energy consumption is high during cleaning, the operation efficiency is low, and the flexibility, the adaptability and the stability are not strong.

Disclosure of Invention

The invention aims to solve the technical problem of providing a multifunctional pipe inner wall cleaning device and a cleaning method thereof, which effectively overcome the defects of the prior art.

The technical scheme for solving the technical problems is as follows: the multifunctional pipe inner wall cleaning device comprises a spraying cylinder, two travelling mechanisms, a pipe cleaner and a central shaft which are coaxially arranged;

the spray cylinder is of a horizontally arranged columnar structure, and a cavity is coaxially arranged in the spray cylinder;

the central shaft is hollow and has two open ends; the central shaft penetrates through the cavity and penetrates through two ends of the spraying cylinder, the central shaft is communicated with the cavity through a plurality of slotted holes penetrating through the outer wall, and the spraying cylinder can rotate relative to the central shaft;

a plurality of spray head components which are uniformly distributed circumferentially are detachably arranged on the periphery of the spray cylinder, and the spray head components are respectively communicated with the cavity;

a plurality of steel brush assemblies for scraping and cleaning the inner wall of the pipe are radially and uniformly arranged on the periphery of the spray cylinder;

One end of the pipe cleaner, which is close to the spray cylinder, is a liquid outlet end, the other end of the pipe cleaner is a liquid inlet end, two ends of the central shaft are respectively provided with a traveling joint communicated with the central shaft, one end of the central shaft, which corresponds to the liquid outlet end, is fixedly connected with the liquid outlet end through the corresponding traveling joint and is communicated with the liquid outlet end, a plug is detachably arranged on the traveling joint corresponding to one end, which is far away from the pipe cleaner, of the central shaft, and the liquid inlet end is externally connected with a high-pressure cleaning system;

the two travelling mechanisms are respectively arranged on the travelling joints in a one-to-one correspondence manner;

the spraying directions of the spray nozzle assemblies are consistent in the radial direction and are obliquely arranged towards the inner wall of the pipe tool to be cleaned and the pipe cleaner, the reverse thrust of the high-pressure jet flow generated when the spray nozzle assemblies spray can push the spray cylinder to rotate around the central shaft and synchronously drive the steel brush assembly to rotate, and can push the spray cylinder to axially move relative to the pipe tool to be cleaned.

The beneficial effects of the invention are as follows: simple structure, convenient to use can realize no dead angle cleanness to pipe utensil inner wall, and cleaning effect is better, simultaneously, utilizes the thrust of spraying the back of medium can realize that whole device is clean, high-efficient and energy-conserving along the removal of pipe utensil inner wall.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the cavity is cylindrical and penetrates through two ends of the spraying cylinder, the two ends of the cavity are respectively provided with bearing assemblies in a sealing mode, and the two ends of the central shaft respectively penetrate through the corresponding bearing assemblies and are in rotary connection with the bearing assemblies.

The beneficial effects of adopting the further scheme are as follows: simple structure, reasonable in design, cavity both ends and center pin cooperation department leakproofness are better, can realize rotary seal.

Further, each of the bearing assemblies comprises a sealing ring, a framework oil seal, an inner end cover flange, a bearing and an outer end cover flange which are coaxially arranged in sequence and mutually abutted, step cylindrical holes are coaxially formed in two ends of the cavity, the sealing rings, the framework oil seal, the inner end cover flange and the bearing are respectively arranged in the corresponding step cylindrical holes, the sealing rings are abutted to the bottoms of the corresponding step cylindrical holes, the outer end cover flange is fixedly arranged at the corresponding end part of the spray cylinder through screws, the inner end cover flange is fixedly arranged at the bottoms of the step cylindrical holes through screws, and two ends of the central shaft respectively pass through the corresponding sealing rings, the framework oil seal, the inner end cover flange, the bearing and the outer end cover flange in sequence and are rotationally connected with the corresponding bearings.

The beneficial effects of adopting the further scheme are as follows: the bearing assembly is simple in structure, convenient to install, good in tightness connected with the central shaft and capable of solving the technical problem of rotary sealing.

Further, each travelling mechanism comprises at least three travelling wheel supporting legs which are uniformly distributed in circumference, one end of each travelling wheel supporting leg is fixed on the periphery of a corresponding travelling joint, the travelling wheels are rotatably mounted on the other end of each travelling wheel through a bracket, and each travelling wheel is respectively in contact with the inner wall of the pipe to be cleaned and can roll on the inner wall of the pipe to be cleaned.

The beneficial effects of adopting the further scheme are as follows: the running mechanism has the advantages of simple structure, flexible and convenient use and low cost, and in addition, the running mechanism also has the effects of supporting the whole device and facilitating the whole movement of the device.

Further, the travelling wheel is a universal travelling wheel, and the surface of the travelling wheel is provided with a bionic non-smooth structural layer for reducing friction resistance between the travelling wheel and the inner wall of the pipe, reducing adhesion effect of dirt on the inner wall of the pipe to the travelling wheel and improving wear resistance of the travelling wheel.

Further, the bionic non-smooth structure layer is one or a combination of a plurality of pits, convex hulls or ribs.

The beneficial effects of adopting the further scheme are as follows: the design of bionical non-smooth structural layer makes the walking wheel reduce the area of contact with between the pipe utensil inner wall when walking along pipe utensil inner wall, and frictional resistance reduces, simultaneously, this structural layer still can improve dirt and the walking wheel adhesion state on the pipe utensil inner wall, ensures that the walking wheel can be along waiting the stable, smooth and easy removal of clean pipe utensil inner wall.

Further, the spray head assembly comprises a spray nozzle elbow joint and a spray nozzle, one end of the spray nozzle elbow joint is detachably arranged on the periphery of the spray cylinder and communicated with the cavity through a corresponding channel, the spray nozzle is detachably arranged at the other end of the spray nozzle elbow joint, an included angle alpha is formed between the spraying direction of the spray nozzle and the axis of a pipe to be cleaned, an included angle beta is formed between the spraying direction of the spray nozzle and an extension line of a connecting line between the spray head assembly and the axis of the spray cylinder, the included angle alpha is more than or equal to 20 degrees and less than or equal to 80 degrees, and the included angle beta is more than or equal to 15 degrees and less than or equal to 35 degrees.

The beneficial effects of adopting the further scheme are as follows: simple structure, convenient to use does benefit to dismouting combination, and angle reasonable in design can be according to actual pipe utensil inner wall and advancing the situation of power and adjust alpha and beta for whole device is along the reasonable removal of pipe utensil inner wall when guaranteeing the clean effect to pipe utensil inner wall.

Further, the spray cylinder is of a positive N-side columnar structure, N is more than or equal to 4, and the spray nozzle components are uniformly distributed on each side face of the spray cylinder in a circumference manner.

The beneficial effects of adopting the further scheme are as follows: the design can enable the joint of the spray head component and the outer wall of the spray cylinder to be good in tightness.

The cleaning method of the multifunctional pipe inner wall cleaning device comprises the following steps:

step one: connecting the high-pressure cleaning system to the whole cleaning device;

step two: placing the whole cleaning device into one end of the pipe to be cleaned, and ensuring that the end with the plug faces the other end of the pipe to be cleaned;

step three: the method comprises the steps of starting a high-pressure cleaning system to clean the inner wall of a pipe tool, specifically, enabling cleaning liquid or high-pressure air flow output by the high-pressure cleaning system to sequentially pass through a pipe cleaner, a traveling joint corresponding to a liquid outlet end, a central shaft, a cavity and a spray head assembly, finally forming high-pressure jet flow at a spray nozzle to spray the high-pressure jet flow to the inner wall of the pipe tool, cleaning the inner wall of the pipe tool, in the process, driving a spray drum to rotate by the reverse thrust of the high-pressure jet flow, synchronously driving a plurality of steel brush assemblies to rotate to scrape the inner wall of the pipe tool, synchronously, driving a traveling mechanism and the pipe cleaner to axially move along the inner wall of the pipe tool by the reverse thrust of the high-pressure jet flow, and scraping the inner wall of the pipe tool in the moving process of the pipe cleaner until the whole device moves along the inner wall of the pipe tool;

Step four: repeating the second step and the third step, and cleaning the inner wall of the pipe for multiple times.

The beneficial effects are that: the whole cleaning process combines three processes of spraying cleaning of high-pressure jet flow, scraping cleaning of a steel brush assembly and scraping cleaning of a follow-up pipe cleaner, so that the cleaning effect on the inner wall of the pipe cleaner is good, and the pipe cleaner is efficient and energy-saving.

Further, the high-pressure cleaning system is a high-pressure liquid cleaning system or a high-pressure air flow cleaning system; the high-pressure liquid cleaning system comprises a high-pressure slurry pump and a liquid storage tank, wherein the input end of the high-pressure slurry pump is communicated with the liquid storage tank through a high-pressure rubber pipe, the output end of the high-pressure slurry pump is communicated with the liquid inlet end through a high-pressure rubber pipe, and cleaning liquid is filled in the liquid storage tank; the high-pressure air flow cleaning system is a high-pressure air pump or an air compressor, and the output end of the high-pressure air flow cleaning system is communicated with the liquid inlet end through a high-pressure rubber pipe.

The beneficial effects of adopting the further scheme are as follows: the high-pressure liquid jet cleaning treatment and the high-pressure air flow drying cleaning treatment of the pipe wall to be cleaned can be realized through the high-pressure liquid cleaning system or the high-pressure air flow cleaning system, so that the whole device has diversified functions, and the inner wall of the pipe is cleaned more thoroughly and better in effect.

Drawings

FIG. 1 is a schematic view of a multi-functional pipe having an inner wall cleaning apparatus of the present invention with a pig removed;

FIG. 2 is a schematic view of the multifunctional pipe inner wall cleaning device of the present invention when the pipe inner wall is running;

FIG. 3 is a schematic view showing a truncated structure of a spray cylinder in the multifunctional pipe tool inner wall cleaning device of the invention;

FIG. 4 is a schematic view of the structure of the central shaft in the multifunctional pipe inner wall cleaning device of the present invention;

FIG. 5 is a schematic view of the structure of the running joint in the multifunctional pipe tool inner wall cleaning device of the present invention;

FIG. 6 is a schematic view of the structure of a pig in the multi-functional pipe inner wall cleaning apparatus of the present invention;

FIG. 7 is a schematic view of an exploded view of the cleaning device of the present invention with the pig removed from the inner wall of the multi-functional pipe;

FIG. 8 is an isometric view of one embodiment of a road wheel surface biomimetic non-smooth structural layer being a pit;

FIG. 9 is a schematic partial top view of the structure of FIG. 8;

FIG. 10 is a schematic view of the longitudinal cross-sectional structure of FIG. 8;

FIG. 11 is an isometric view of another embodiment of a road wheel surface biomimetic non-smooth structural layer being a pit;

FIG. 12 is a schematic view of the partial top view of FIG. 11;

FIG. 13 is a schematic view of the longitudinal cross-sectional structure of FIG. 11;

FIG. 14 is an isometric view of yet another embodiment of a road wheel surface biomimetic non-smooth structural layer being a pit;

FIG. 15 is a schematic view of the partial top view of FIG. 14;

FIG. 16 is a schematic view of the longitudinal cross-sectional structure of FIG. 14;

FIG. 17 is an isometric view of one embodiment of a road wheel surface biomimetic non-smooth structural layer as a convex hull;

FIG. 18 is a schematic view of the partial top view of FIG. 17;

FIG. 19 is a schematic view of the longitudinal cross-sectional structure of FIG. 17;

FIG. 20 is an isometric view of another embodiment of a road wheel surface biomimetic non-smooth structural layer as a convex hull;

FIG. 21 is a schematic view of the partial top view of FIG. 20;

FIG. 22 is a schematic longitudinal sectional view of FIG. 20;

FIG. 23 is an isometric view of yet another embodiment of a road wheel surface biomimetic non-smooth structural layer as a convex hull;

FIG. 24 is a schematic view of the partial top view of FIG. 23;

FIG. 25 is a schematic view of the longitudinal cross-sectional structure of FIG. 23;

FIG. 26 is an isometric view of one embodiment of a road wheel surface biomimetic non-smooth structural layer being ribbed;

FIG. 27 is a schematic view of the longitudinal cross-sectional structure of FIG. 26;

FIG. 28 is an isometric view of another embodiment of a road wheel surface biomimetic non-smooth structural layer with ribs;

FIG. 29 is a schematic view of the longitudinal cross-sectional structure of FIG. 28;

fig. 30 is an isometric view of yet another embodiment of a road wheel surface biomimetic non-smooth structural layer as ribs.

FIG. 31 is a schematic view of the longitudinal cross-sectional structure of FIG. 30;

Fig. 32 is an isometric view of yet another embodiment of a road wheel surface biomimetic non-smooth structural layer with ribs.

FIG. 33 is a schematic view of the longitudinal cross-sectional structure of FIG. 32;

FIG. 34 is an isometric view of one embodiment of a road wheel surface biomimetic non-smooth structural layer with a convex hull and concave pit combination;

FIG. 35 is a schematic view of the partial top view of FIG. 34;

FIG. 36 is a schematic view of the longitudinal cross-sectional structure of FIG. 34;

FIG. 37 is an isometric view of one embodiment of a bionic non-smooth structured layer of a road wheel surface having ribs and pits combined;

FIG. 38 is a schematic view of the partial top plan view of FIG. 37;

FIG. 39 is a schematic view of the longitudinal cross-sectional structure of FIG. 37;

FIG. 40 is an isometric view of one embodiment of a road wheel surface biomimetic non-smooth structural layer with ribs and convex hulls combined;

FIG. 41 is a schematic view of the partial top view of FIG. 40;

FIG. 42 is a schematic longitudinal cross-sectional view of FIG. 40;

FIG. 43 is a schematic view of the spray direction mated with the axis of the spray can;

FIG. 44 is a schematic view of the spray direction mated with the axial line of the spray head assembly and the spray cartridge.

In the drawings, the list of components represented by the various numbers is as follows:

1. the novel multifunctional cleaning device comprises a spraying cylinder, 2, a travelling mechanism, 3, a pipe cleaner, 4, a central shaft, 5, a steel brush assembly, 11, a cavity, 12, a spray head assembly, 13, a channel, 21, a travelling joint, 22, travelling wheel supporting legs, 23, travelling wheels, 41, a slotted hole, 31, a skeleton shaft, 32, a rubber cup assembly, 51, a brush head, 61, a sealing ring, 62, a skeleton oil seal, 63, an inner end cover flange, 64, a bearing, 65, an outer end cover flange, 111, a step cylindrical hole, 121, a nozzle elbow joint, 122, a nozzle, 211, a plugging, 212, a threaded connecting seat, 231 and a bionic non-smooth structural layer.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

Examples: as shown in fig. 1 to 6, the multifunctional pipe tool inner wall cleaning device of the present embodiment includes a spray cylinder 1, two traveling mechanisms 2, a pipe cleaner 3 and a central shaft 4 which are coaxially arranged;

the spray cylinder 1 is of a horizontally arranged columnar structure, and a cavity 11 is coaxially arranged in the spray cylinder;

the central shaft 4 is hollow and has two open ends; the central shaft 4 passes through the cavity 11 and penetrates through two ends of the spraying cylinder 1, the central shaft 4 is communicated with the cavity 11 through a plurality of slots 41 which are penetrated on the outer wall, and the spraying cylinder 1 can rotate relative to the central shaft 4;

a plurality of spray head components 12 which are uniformly distributed circumferentially are detachably arranged on the periphery of the spray cylinder 1, and the spray head components 12 are respectively communicated with the cavity 11;

a plurality of steel brush assemblies 5 for scraping and cleaning the inner wall of the pipe are uniformly arranged on the periphery of the spray cylinder 1 in the radial direction;

the pipe cleaner 3 is provided with a liquid outlet end and a liquid inlet end near the spray cylinder 1, the two ends of the central shaft 4 are respectively provided with a traveling joint 21 communicated with the liquid outlet end, one end of the central shaft 4 corresponding to the liquid outlet end is fixedly connected with the liquid outlet end through the corresponding traveling joint 21 and communicated with the liquid outlet end, the traveling joint 21 corresponding to the end of the central shaft 4 far away from the pipe cleaner 3 is detachably provided with a plug 211, and the liquid inlet end is externally connected with a high-pressure cleaning system;

The two travelling mechanisms 2 are respectively arranged on the travelling joints 21 in a one-to-one correspondence manner;

the spraying directions of the spray nozzle assemblies 12 are consistent in radial direction and are obliquely arranged towards the inner wall of the pipe tool to be cleaned and the pipe cleaner 3, the reverse thrust of the high-pressure jet generated when the spray nozzle assemblies 12 spray can push the spray cylinder 1 to rotate around the central shaft 4 and synchronously drive the steel brush assembly 5 to rotate, and can push the spray cylinder 1 to axially move relative to the pipe tool to be cleaned, and when the spray cylinder 1 axially moves, the central shaft 4 and the traveling joint 21 synchronously drive the traveling mechanism 2 and the pipe cleaner 3 to axially move along the inner wall of the pipe tool to be cleaned.

The working principle of the whole cleaning device is as follows: after the whole mechanism is externally connected with a high-pressure cleaning system, the whole mechanism is placed into a pipe tool to be cleaned from an opening at one end of the pipe tool, the high-pressure cleaning system outputs high-pressure air flow or cleaning liquid and sequentially passes through a liquid inlet end-liquid outlet end-corresponding walking joint 21-central shaft 4 of a pipe cleaner 3, at the moment, the high-pressure air flow or cleaning liquid entering the central shaft 4 is blocked by a plug 211, does not flow forwards along the central shaft 4, enters a cavity 11 from a plurality of slots 41, is shunted and conveyed into each spray head assembly 12 from the cavity 11, finally forms high-pressure jet flow at a nozzle of the spray head assembly 12 and sprays the high-pressure jet flow to the inner wall of the pipe tool for cleaning (the spraying pressure of the high-pressure jet flow is more than or equal to 10 MPa), in the process, the reaction force of the high-pressure jet flow pushes the spray cylinder 1 to rotate around the central shaft 4 and synchronously drives the steel brush assembly 5 to rotate to scrape and clean the inner wall of the pipe tool, the reaction force of the cleaning liquid during spraying can also push the spraying cylinder 1 to axially move relative to the pipe tool to be cleaned, in the axial movement process of the spraying cylinder 1, the spraying cylinder 1 drives the whole device to axially move along the inner wall of the pipe tool through the central shaft 4, in the movement process, the pipe cleaner 3 scrapes the inner wall of the pipe tool, in the whole cleaning process, the spray head assembly 12 sprays and cleans the inner wall of the pipe tool, then scrapes dirt adhered on the inner wall of the pipe tool synchronously through the steel brush assembly 5, the accumulated liquid and other impurities remained in the pipe tool after spraying and scraping cleaning can be discharged outside the pipe tool under the scraping action of the pipe cleaner 3, meanwhile, the overflow generated by the high-pressure jet formed at the nozzle of the spray head assembly 12 can also play a positive role on the outside of the discharge pipe tool remained at the bottom of the pipe tool, after cleaning is finished, the whole device is withdrawn from the other end of the pipe tool, if cleaning liquid is adopted for cleaning, the pipe is pumped out by a proper suction pump when water accumulated in the pipe is more.

The end of the steel brush assembly 5, which is far away from the spraying cylinder 1, is provided with a brush head 51, the brush head 51 is in contact with the inner wall of the pipe to be cleaned, and is in contact with the inner wall of the pipe to be cleaned, the spraying cylinder 1 is pushed by the high-pressure jet reaction force to drive the steel brush assembly 5 to rotate, and in the rotating process, the brush head 51 scrapes the inner wall of the pipe to remove dirt.

In the use process, the plug 211 can be detached to be connected with other cleaning devices for use according to the actual use requirement.

Preferably, the cavity 11 is cylindrical and penetrates through two ends of the spray cylinder 1, bearing assemblies are respectively and hermetically installed at two ends of the cavity 11, two ends of the central shaft 4 respectively penetrate through the corresponding bearing assemblies and are rotationally connected with the bearing assemblies, and the sealing performance of the matching parts between two ends of the central shaft 4 and two ends of the cavity 11 is good, so that the leakage condition can not occur, and the rotational sealing of the central shaft 4 is realized.

As shown in fig. 7, each of the bearing assemblies includes a sealing ring 61, a frame oil seal 62, an inner end cap flange 63, a bearing 64 and an outer end cap flange 65 coaxially disposed in sequence and abutting against each other, stepped cylindrical holes 111 are coaxially disposed at both ends of the cavity 11, the sealing ring 61, the frame oil seal 62, the inner end cap flange 63 and the bearing 64 are respectively mounted in the corresponding stepped cylindrical holes 111, the sealing ring 61 abuts against a bottom of the corresponding stepped cylindrical hole 111, the outer end cap flange 65 is fixedly mounted at a corresponding end of the spray cylinder 1 by a screw, the inner end cap flange 63 is fixedly mounted at the bottom of the stepped cylindrical hole 111 by a screw, both ends of the central shaft 4 sequentially pass through the corresponding sealing ring 61, the frame oil seal 62, the inner end cap flange 63, the bearing 64 and the outer end cap flange 65, and are rotatably connected with the corresponding bearing 64, and the bearing assembly is simple in structure, convenient to mount, and has good sealing property when being matched with the central shaft 4.

The spray cylinder 1 is internally provided with a plurality of channels 13 which are communicated with the cavity 11 and are in one-to-one correspondence with the spray nozzle assemblies 12, one end of each channel 13, which is far away from the cavity 11, extends to the outer surface of the spray cylinder 1, and the spray nozzle assemblies 12 are detachably arranged at the channel opening of one end, which is far away from the cavity 11, of the corresponding channel 13, so that the separation of cleaning liquid or the diversion of air flow in the cavity 11 is facilitated.

Preferably, the outer peripheries of the two ends of the central shaft 4 are provided with external threads, the running joint 21 is of a cylindrical structure with two open ends and hollow inside, the inner wall of one end of the running joint 21 connected with the central shaft 4 is provided with internal threads, the outer part of the other end is provided with external threads, one end provided with the internal threads is in threaded connection with the corresponding end of the central shaft 4, the plug 211 is also in threaded connection with the corresponding end of the running joint 21 far away from the central shaft 4, and in addition, the pipe cleaner 3 is also in threaded connection and fixed with the corresponding end of the running joint 21 far away from the central shaft 4.

Preferably, each of the travelling mechanisms 2 includes at least three travelling wheel supporting legs 22 which are uniformly distributed circumferentially, one end of each of the travelling wheel supporting legs 22 is fixed on the periphery of the corresponding travelling joint 21, the other end of each of the travelling wheel supporting legs is provided with a travelling wheel 23 through a bracket in a rotating manner, the travelling wheels 23 are respectively in contact with the inner wall of the pipe to be cleaned, and the travelling mechanism 2 is simple in structural design and low in manufacturing cost.

The outer circumference of the travelling joint 21 is provided with a threaded connecting seat 212 corresponding to each travelling wheel supporting leg 22, the threaded connecting seat 212 is provided with a threaded hole, and the travelling wheel supporting legs 22 are installed in corresponding round hole grooves in a threaded manner.

Preferably, the above-mentioned walking wheel 23 is a universal walking wheel, and the above-mentioned walking wheel 23 surface is provided with the bionical non-smooth structural layer 231 that is used for reducing the friction resistance of walking wheel 23 and pipe utensil inner wall, reduce pipe utensil inner wall dirt to walking wheel 23 adhesion effect, and promote the wear resistance of walking wheel 23, this design is favorable to walking wheel 23 along the roll of pipe utensil inner wall and the axial displacement of whole device along the pipe utensil inner wall, because of the setting of bionical non-smooth structural layer 231, make originally continuous smooth walking wheel 23 surface become discontinuous and non-smooth (unsmooth), take on bionical non-smooth form promptly, can reduce the area of contact with pipe utensil inner wall when walking wheel 23 is walked along the pipe utensil, reduce frictional resistance, reduce the energy consumption, simultaneously, still can improve the adhesion state between the dirt that is attached to on walking wheel 23 surface and the pipe utensil inner wall, have antiseized effect, further ensure the steady advancing of walking wheel 23.

Preferably, the bionic non-smooth structure layer 231 is one or more of pits, convex hulls, or ribs.

The pipe cleaner 3 comprises a skeleton shaft 31 and a cylindrical annular rubber cup component 32, wherein the inside of the skeleton shaft 31 is hollow, two ends of the skeleton shaft are open, one end of the rubber cup component close to the spray cylinder 1 is the liquid inlet end, the other end of the rubber cup component is the liquid outlet end, the rubber cup component 32 is coaxially sleeved on the skeleton shaft 31, the outer diameter of the rubber cup component 32 is matched with the outer diameter of the travelling mechanism 2 during rolling travelling, the rubber cup component 32 has certain elasticity, so that the outer diameter of the rubber cup component 32 is slightly larger than the inner diameter of a pipe, and the rubber cup component 32 can scrape the inner wall of the pipe when the whole device moves axially and can effectively clean the inner wall of the pipe.

Preferably, a plurality of steel brush assemblies 5 are radially and uniformly arranged on the periphery of the spraying cylinder 1, and the brush heads 51 of the steel brush assemblies 5 are far away from the spraying cylinder 1 and are in contact with the inner wall of the pipe to be cleaned, and the steel brush assemblies 5 can scrape impurities or dirt on the inner wall of the pipe circumferentially while the spraying cylinder 1 rotates under the action of the reverse thrust of the high-pressure jet flow, so that the dirt adhered on the inner wall of the pipe can be scraped.

Preferably, the spray head assembly 12 includes a nozzle elbow 121 and a nozzle 122, one end of the nozzle elbow 121 is detachably mounted on the periphery of the spray cylinder 1 and is communicated with the cavity 11 through a corresponding channel 13, the nozzle 122 is detachably mounted on the other end of the nozzle elbow 121, an included angle α (as shown in fig. 43) is formed between a spraying direction P of the nozzle 122 and a pipe axis S to be cleaned, an included angle β (as shown in fig. 44) is formed between the spraying direction P of the nozzle 122 and an extension line F of a connecting line T between the corresponding spray head assembly 12 and the axis of the spray cylinder 1, and the included angle α is not more than 20 ° and not more than 80 °, and the angle β is not more than 15 ° and not more than 35 °, so that the whole spray head assembly 12 is combined, is convenient to detach and clean, and has a proper angle with the spray cylinder 1, so that the whole device is pushed to axially move along the pipe inner wall by a reaction force formed when spraying the cleaning liquid to clean the pipe inner wall, without other power driving equipment, and is very convenient, efficient and energy-saving.

The connection parts of the nozzle elbow joints 121 and the nozzles 122 are all in threaded connection, internal threads are arranged at the positions of the channel 13 far away from the channel openings of the cavities 11, and the nozzle elbow joints 121 are in threaded connection with the internal threads at the corresponding channel openings of the channels 13.

Preferably, the spray cylinder 1 has a positive N-sided columnar structure, N is greater than or equal to 4, and the plurality of spray head assemblies 12 are uniformly distributed on each side surface of the spray cylinder 1 in a circumference manner, and each side surface of the spray cylinder 1 is a plane, so that the joint between the spray head assemblies 12 and each side surface of the spray cylinder 1 has better sealing performance during installation.

The bionic non-smooth structural layer can be designed into various structures, and specifically comprises the following components:

(1) the bionic non-smooth structural layer 231 is a pit and is uniformly and alternately distributed on the periphery of each travelling wheel 23 in a plurality of rows, each row comprises a plurality of linearly distributed pits, and the pits in two adjacent rows are uniformly and alternately distributed.

The pits are hemispherical pits (fig. 8, 9 and 10) or cylindrical pits (fig. 11, 12 and 13) or rectangular pits (fig. 14, 15 and 16), the distance between the centers of two adjacent pits in each row is b, the diameter (or width) is a, the connecting line between one pit in one row and the centers of the corresponding two pits in the other row is in equilateral triangle distribution, the vertical distance between the centers of the two adjacent pits in the two rows is b, b is generally 1-3 times of a, the surface area occupied by all the pits on the periphery of the travelling wheel 23 is about 10-50% of the peripheral area of the travelling wheel 23, the depth of the pits is c, c is generally 0.5-1 times of a, the included angle formed between the two pits in the two adjacent rows and the center of the travelling wheel 23 is θ, and θ is generally 5-30 °, the distances between the pits at the two ends of the same row and the two ends of the corresponding travelling wheel 23 are a-2 a, the size of the pits are optimally distributed, and the size of the pits are distributed in a certain way, and the size of course can be distributed in a reasonable way, and the method can be used in other practical manners.

(2) The bionic non-smooth structural layer 231 is a convex hull, is uniformly and alternately distributed on the periphery of each travelling wheel 23 in a plurality of rows, each row comprises a plurality of pits in linear distribution, and the pits in two adjacent rows are in equidistant staggered distribution.

The convex hulls are hemispherical convex hulls (as shown in fig. 17, 18 and 19) or cylindrical convex hulls (as shown in fig. 20, 21 and 22) or rectangular convex hulls (as shown in fig. 23, 24 and 25), the distance between the centers of two adjacent convex hulls in the same row is b, the diameter (or the width of the rectangular convex hull) is a, the connecting line between the centers of one convex hull in one row and the corresponding two convex hulls in the other row in the adjacent two rows of bionic non-smooth structural layers 231 is in equilateral triangle distribution, the vertical distance between the centers of two adjacent convex hulls in the two rows of bionic non-smooth structural layers 231 is b, b is generally 1-3 times that of a, the surface area occupied by all the convex hulls on the periphery of the travelling wheel 23 is about 10-50% of the peripheral area of the travelling wheel 23, the height of the convex hulls is c, c is generally 0.5-1 times that of a, the included angle formed between the two convex hulls in the adjacent two rows and the center of the travelling wheel 23 is generally 5-30 DEG, the distance between the convex hulls in the same row and the corresponding two convex hulls in the same row is a, and the rounded corner dimension is 0.d when the distance between the convex hulls at the two ends of the cylindrical travelling wheel 23 and the corresponding travelling wheel is 2.d, and the rounded corner dimension is generally 0.d; the size design and the interval arrangement of the convex hulls are the best distribution through experiments, and other reasonable arrangement modes can be selected according to actual use conditions, so that the size design and the interval arrangement of the convex hulls are not listed here.

(3) The bionic non-smooth structural layer 231 is a rib, the surface of the rib can be an arc surface or a rib with a rectangular or trapezoid longitudinal section, a plurality of ribs are uniformly distributed on the periphery of each travelling wheel 23, the ribs can be arranged at equal intervals or in a continuous wave shape, the length of the rib is equal to the width of the travelling wheel 23, and the length of the rib is l and equal to the width of the travelling wheel 23.

As shown in fig. 26 and 27, the raised surface of the ribs is a cambered surface, the ribs are arranged at intervals, the vertical distance between the top of a single rib and the outer surface of the travelling wheel 23 is c, the width occupied by the single rib on the outer periphery of the travelling wheel 23 is a, the vertical distance between two adjacent ribs is a, c is generally 0.5-1 times of a, an included angle theta is formed between the central point of two adjacent ribs and the central point of the travelling wheel 23, and is generally 5-30 degrees, and the surface area occupied by all the ribs on the outer periphery of the travelling wheel 23 is about 10% -50% of the outer peripheral area of the travelling wheel 23.

As shown in fig. 28 and 29, the longitudinal sections of the ribs are in a raised rectangular structure, the ribs are arranged at intervals, the vertical distance between the top of each rib and the outer surface of the travelling wheel 23 is c, the width occupied by each rib on the outer periphery of the travelling wheel 23 is a, the vertical distance between two adjacent ribs is a, c is generally 0.5-1 times of a, an included angle theta is formed between the central point of each adjacent rib and the central point of the travelling wheel 23, theta is generally 5-30 degrees, the top surface (edge) of each rib is rounded, the rounded angle is d, d is generally 0.2-0.7 times of a, and the surface area occupied by all ribs on the outer periphery of the travelling wheel 23 is about 10% -50% of the outer peripheral area of the travelling wheel 23.

As shown in fig. 30 and 31, the longitudinal sections of the ribs are in a convex inverted V-shaped structure, the ribs are arranged at intervals, the vertical distance between the top of each rib and the outer surface of the travelling wheel 23 is c, the width occupied by each rib on the outer periphery of the travelling wheel 23 is a, the vertical distance between every two adjacent ribs is a, c is generally 0.5-1 times of a, an included angle theta is formed between the central point of each two adjacent ribs and the central point of the travelling wheel 23, theta is generally 5-30 degrees, the top surface (edge) of each rib is rounded, the rounded angle is d, d is generally 0.2-0.7 times of a, and the surface area occupied by all ribs on the outer periphery of the travelling wheel 23 is about 10% -50% of the outer peripheral area of the travelling wheel 23.

As shown in fig. 32 and 33, the longitudinal section of each rib is a raised trapezoid structure, the ribs are continuously arranged, the vertical distance between the top of each rib and the outer surface of the travelling wheel 23 is c, the width occupied by each rib on the outer periphery of the travelling wheel 23 is a, c is generally 0.5-1 times of a, an included angle theta/2 is formed between the central point of each adjacent rib and the central point of the travelling wheel 23, theta is generally 5-30 degrees, the top surface (edge) of each rib is rounded, the rounded angle size is d, d is generally 0.2-0.7 times of a, and the surface area occupied by all ribs on the outer periphery of the travelling wheel 23 is about 10% -50% of the outer peripheral area of the travelling wheel 23.

The size, structural design and interval arrangement of the ribs are the best distribution through experiments, and other reasonable arrangement modes can be selected according to actual use conditions, so that the ribs are not listed here.

(4) The bionic non-smooth structural layer 231 is a combination of convex hulls and pits, the convex hulls and the pits are distributed in rows, the convex hulls or the pit rows in each row are arranged at equal intervals, when the bionic non-smooth structural layer is arranged, the convex hulls and the pit rows in each row are distributed on the periphery of the travelling wheel 23 at staggered intervals, and each convex hull in each row is staggered with each pit in each adjacent row at equal intervals.

As shown in fig. 34, 35 and 36, the convex hull and the concave pit are both cylindrical, the height of the convex hull or the depth of the concave pit is c, the diameters of the convex hull and the concave pit are a, the included angle formed between the concave pit corresponding to each of two adjacent columns and the center of the convex hull and the travelling wheel 23 is θ, c is generally 0.5-1 times of a, θ is generally 5-30 °, the distance between the centers of the convex hulls or the concave pits in the same column is b, the diameter of the concave pit is a, the connecting line between one convex hull or the concave pit in one of the two adjacent columns and the center of the concave pit corresponding to each of the two adjacent columns is in an equilateral triangle, the vertical distance between the convex hull adjacent to the center of the concave pit in the two columns of the bionic non-smooth structural layer 231 is b, b is generally 1-3 times of a, the surface area occupied by the periphery of the travelling wheel 23 is about 10-50% of the peripheral area of the travelling wheel 23, the top surface (edge) of the convex hull is a rounded corner, the size of the rounded corner is d, d is generally 0.2-0.7 times of the convex hull, the distance between the concave pit and the convex hull corresponding to the two adjacent columns is arranged at the two ends of the same column or the two concave pit centers in a-2-to the optimal distance between the two columns and the concave pit in a-2-3, and the optimal distribution mode can be reasonably arranged according to the situation.

(5) The bionic non-smooth structure layer 231 is a combination of ribs and pits, as shown in fig. 11, where a plurality of ribs are circumferentially distributed on the periphery of each travelling wheel 23 at equal intervals, and pits are arranged in rows on the periphery of each travelling wheel 23 and are distributed between two adjacent ribs.

As shown in fig. 37, 38 and 39, the longitudinal section of the rib is a cambered surface, the pit is a hemispherical pit, the height of the rib is c, the width is a, the depth of the pit is c, the diameter is a, an included angle θ is formed between the centers of adjacent ribs and the pit and the center of the travelling wheel 23, the distance between the centers of two adjacent pits in the same column is b, the distances between the pits at two ends and the two ends of the corresponding travelling wheel 23 in the same column are a-2 a, c is generally 0.5-1 times of a, θ is generally 5-30 °, b is generally 1-3 times of a, and the surface area occupied by the bionic non-smooth structural layer 231 on the periphery of the travelling wheel 23 is about 10% -50% of the peripheral area of the travelling wheel 23.

(6) The bionic non-smooth structural layer 231 is a combination of ribs and convex hulls, as shown in fig. 12, the ribs are circumferentially distributed on the periphery of each travelling wheel 23 at equal intervals, and the convex hulls are arranged on the periphery of each travelling wheel 23 in rows and are distributed between two adjacent ribs.

As shown in fig. 40, 41 and 42, the longitudinal section of the rib is a cambered surface, the convex hull is cylindrical, the height of the rib is c, the width is a, the height of the convex hull is c, the diameter is a, an included angle θ is formed between the centers of adjacent ribs and pits and the center of the travelling wheel 23, the distance between the centers of two adjacent pits in the same column is b, in the same column of convex hulls, the distance between the convex hulls at two ends and the two ends of the corresponding travelling wheel 23 is a-2 a, c is generally 0.5-1 times of a, θ is generally 5-30 °, b is generally 1-3 times of a, the top surface (edge) of the convex hull is rounded, the rounded corner size is d, d is generally 0.2-0.7 times of a, and the surface area occupied by the bionic non-smooth structural layer 231 on the periphery of the travelling wheel 23 is about 10% -50% of the peripheral area of the travelling wheel 23.

In some embodiments, the whole device is further provided with a waterproof searchlight and a waterproof camera, along with the movement of the device on the inner wall of the pipe tool, the waterproof searchlight can illuminate the inner wall of the pipe tool, the waterproof camera can pick up the image of the inner wall of the pipe tool in a clean state and send the image information to a background receiver (a computer) in a wired or wireless mode to be displayed on a display screen, a worker can know the cleaning condition of the inner wall of the pipe tool in real time according to the picture on the display screen so as to determine the cleaning frequency, the waterproof searchlight and the waterproof camera are generally arranged on a walking wheel supporting leg of a walking mechanism facing one end part of the pipe cleaner 3 towards the spray drum 1, and a joint for installing the waterproof searchlight and the waterproof camera can also be considered to be specially arranged between a central shaft and a plug (or the central shaft and the pipe cleaner).

The method for cleaning the inner wall of the pipe by using the multifunctional pipe inner wall cleaning device comprises the following steps:

step two: placing the whole cleaning device into one end of the pipe to be cleaned, and ensuring that the end provided with the plug 211 faces the other end of the pipe to be cleaned;

step three: starting a high-pressure cleaning system to clean the inner wall of the pipe, specifically, cleaning liquid or high-pressure air flow output by the high-pressure cleaning system sequentially passes through a pipe cleaner 3, a walking joint 21 corresponding to a liquid outlet end, a central shaft 4, a cavity 11 and a spray head assembly 12, finally, high-pressure jet flow is formed at a spray nozzle 122 and sprayed to the inner wall of the pipe, the inner wall of the pipe is cleaned, in the process, the jet cylinder 1 is pushed to rotate by the reverse thrust of the high-pressure jet flow, a plurality of steel brush assemblies 5 are synchronously driven to rotate to scrape and clean the inner wall of the pipe, the jet cylinder 1 is synchronously driven to axially move, a travelling mechanism 2 and the pipe cleaner 3 are synchronously driven to axially move along the inner wall of the pipe, and scraping treatment is carried out on the inner wall of the pipe in the moving process of the pipe cleaner 3 until the whole device moves along the inner wall of the pipe;

The high-pressure cleaning system is a high-pressure liquid cleaning system or a high-pressure air flow cleaning system; the high-pressure liquid cleaning system comprises a high-pressure slurry pump and a liquid storage tank, wherein the input end of the high-pressure slurry pump is communicated with the liquid storage tank through a high-pressure rubber pipe, the output end of the high-pressure slurry pump is communicated with the liquid inlet end through a high-pressure rubber pipe, and cleaning liquid is filled in the liquid storage tank and comprises clean water or other environment-friendly cleaning agents meeting requirements; the high-pressure air flow cleaning system is a high-pressure air pump or an air compressor, and the output end of the high-pressure air flow cleaning system is communicated with the liquid inlet end through a high-pressure rubber pipe; when the inner wall of the pipe tool is cleaned by high-pressure liquid jet, the input end of the high-pressure slurry pump is communicated with the liquid storage tank through the high-pressure rubber pipe, the output end of the high-pressure slurry pump is communicated with the pipe cleaner 3 through the high-pressure rubber pipe, the whole mechanism is placed into the pipe tool to be cleaned from the opening at one end of the pipe tool, next, the high-pressure slurry pump is started to pump cleaning liquid, the cleaning liquid sequentially passes through the corresponding running joint 21-central shaft 4 of the liquid inlet end-liquid outlet end-corresponding running joint of the pipe cleaner 3, at the moment, the cleaning liquid entering the central shaft 4 is blocked by the blocking 211, does not flow forwards along the central shaft 4, enters the cavity 11 from the plurality of slots 41, is finally distributed into each spray head assembly 12 through the cavity 11, is finally sprayed to the inner wall of the pipe tool to be cleaned through the spray nozzle of the spray head assembly 12, and the reaction force generated when the cleaning liquid is sprayed out pushes the spray cylinder 1 to rotate around the central shaft 4, the steel brush component 5 is synchronously driven to rotate to scrape the inner wall of the pipe tool, the reaction force during the spraying of cleaning fluid can also push the spraying cylinder 1 to axially move relative to the pipe tool to be cleaned, in the axial moving process of the spraying cylinder 1, the spraying cylinder 1 drives the whole device to axially move along the inner wall of the pipe tool through the central shaft 4, in the moving process, the pipe cleaner 3 scrapes the inner wall of the pipe tool, in the whole cleaning process, the spray head component 12 firstly sprays and cleans the inner wall of the pipe tool, then scrapes dirt adhered on the inner wall of the pipe tool through the steel brush component 5, residual accumulated fluid or other impurities can be separated from the inner wall of the pipe tool under the scraping action of the pipe cleaner 3 and the high-pressure spraying of the spray head component, the whole device is withdrawn from the other end of the pipe tool after the cleaning is finished, if the water accumulation in the pipe is more, the pipe is pumped out by a proper suction pump; when the inner wall of the pipe tool is cleaned or dried by air flow, the high-pressure air pump or the air compressor is communicated with the pipe cleaner 3, the high-pressure air source enters the walking joint 21-cavity 11 corresponding to the liquid inlet end-liquid outlet end-of the pipe cleaner 3, finally, the high-pressure air source is shunted into each spray head assembly 12 through the cavity, and finally, the air flow of the inner wall of the pipe tool is sprayed to the inner wall of the pipe tool by the spray nozzle of the spray head assemblies 12, so that the impurity removal or drying of the inner wall of the pipe tool is realized, and in the process, the reaction force of the high-pressure air flow drives the spray cylinder 1 to rotate relative to the inner wall of the pipe tool and drives the whole device to axially move along the inner wall of the pipe tool.

It should be noted that, when the high pressure cleaning system in the first to fourth steps is a high pressure liquid cleaning system, the fifth step may be performed after the fourth step, where the fifth step is specifically:

and (3) removing the high-pressure liquid cleaning system, replacing and installing the high-pressure air flow cleaning system, repeating the second step to the fourth step, and drying and cleaning the inner wall of the pipe by high-pressure air flow.

According to the cleaning method, the spray head assembly 12 is used for spraying and cleaning, the steel brush assembly 5 is used for scraping, and the pipe cleaner 3 is used for scraping dirt on the inner wall of the pipe to be cleaned, the whole cleaning process is automatically controlled along with the axial movement of the whole device along the pipe, other personnel are not required to participate in cleaning, the cleaning operation efficiency is high, and the cleaning effect is good.

If the device is difficult to realize mobile cleaning by means of the reverse thrust of high-pressure jet flow only due to the blockage of dirt in the advancing process, the advancing assistance can be applied by arranging a steel wire rope in front of the device for traction or adopting a rigid rod pushing mode behind the device; when the device needs to be retreated, the high-pressure rubber tube is dragged.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a multi-functional pipe utensil inner wall cleaning device which characterized in that: comprises a spraying cylinder (1), two travelling mechanisms (2), a pipe cleaner (3) and a central shaft (4) which are coaxially arranged;

the spray cylinder (1) is of a horizontally arranged columnar structure, and a cavity (11) is coaxially arranged in the spray cylinder;

the central shaft (4) is hollow and is provided with two ends; the central shaft (4) passes through the cavity (11) and penetrates through two ends of the spray cylinder (1), the central shaft (4) is communicated with the cavity (11) through a plurality of slotted holes (41) which are formed in the outer wall in a penetrating manner, and the spray cylinder (1) can rotate relative to the central shaft (4);

a plurality of spray head components (12) which are uniformly distributed in circumference are detachably arranged on the periphery of the spray cylinder (1), and the spray head components (12) are respectively communicated with the cavity (11);

a plurality of steel brush assemblies (5) for scraping and cleaning the inner wall of the pipe are uniformly arranged on the periphery of the spray cylinder (1) in the radial direction;

One end of the pipe cleaner (3) close to the spray cylinder (1) is a liquid outlet end, the other end of the pipe cleaner is a liquid inlet end, two ends of the central shaft (4) are respectively provided with a traveling joint (21) communicated with the central shaft, one end of the central shaft (4) corresponding to the liquid outlet end is fixedly connected with the liquid outlet end through a corresponding traveling joint (21) and communicated with the liquid outlet end, a plug (211) is detachably arranged on the traveling joint (21) corresponding to one end of the central shaft (4) far away from the pipe cleaner (3), and the liquid inlet end is externally connected with a high-pressure cleaning system;

the two travelling mechanisms (2) are respectively arranged on the travelling joints (21) in a one-to-one correspondence manner;

the spraying directions of the spray head assemblies (12) are consistent in the radial direction and are obliquely arranged towards the inner wall of the pipe tool to be cleaned and the pipe cleaner (3), the reverse thrust of high-pressure jet flow generated when the spray head assemblies (12) spray can push the spray cylinder (1) to rotate around the central shaft (4) and synchronously drive the steel brush assembly (5) to rotate and push the spray cylinder (1) to axially move relative to the pipe tool to be cleaned, and when the spray cylinder (1) axially moves, the central shaft (4) and the travelling joint (21) synchronously drive the travelling mechanism (2) and the pipe cleaner (3) to axially move along the inner wall of the pipe tool to be cleaned;

The pipe cleaner (3) comprises a skeleton shaft (31) and a cylindrical annular rubber cup component (32), wherein the skeleton shaft (31) is hollow and is provided with openings at two ends, one end of the rubber cup component, which is close to the spray cylinder (1), is provided with a liquid inlet end, the other end of the rubber cup component is provided with a liquid outlet end, the rubber cup component (32) is coaxially sleeved on the skeleton shaft (31), the outer diameter of the rubber cup component (32) is matched with the outer diameter of the running mechanism (2) during rolling running, the rubber cup component (32) is elastic, and the outer diameter of the rubber cup component is larger than the inner diameter of a pipe tool.

2. The multifunctional pipe tool inner wall cleaning device according to claim 1, wherein: the cavity (11) is cylindrical and penetrates through two ends of the spray cylinder (1), bearing assemblies are respectively and hermetically arranged at two ends of the cavity (11), and two ends of the central shaft (4) respectively penetrate through the corresponding bearing assemblies and are rotationally connected with the bearing assemblies.

3. The multifunctional pipe inner wall cleaning device according to claim 2, wherein: every bearing assembly all includes coaxial sealing washer (61), skeleton oil blanket (62), inner end cover ring flange (63), bearing (64) and outer end cover ring flange (65) that set up and mutual butt in proper order, cavity (11) both ends all coaxial step cylinder hole (111) that are equipped with, sealing washer (61), skeleton oil blanket (62), inner end cover ring flange (63) and bearing (64) are installed respectively in correspondence step cylinder hole (111), just sealing washer (61) and the hole bottom butt of corresponding step cylinder hole (111), outer end cover ring flange (65) are in through screw fixed mounting in the tip that spout (1) corresponds, inner end cover ring flange (63) pass through screw fixed mounting in the hole bottom department of step cylinder hole (111) respectively at center pin (4) both ends pass corresponding sealing washer (61), skeleton oil blanket (62), inner end cover ring flange (63), bearing (64) and outer end cover ring flange (65) in proper order to with corresponding bearing (64) rotate and are connected.

4. A multi-functional pipe inner wall cleaning device according to claim 3, wherein: each travelling mechanism (2) comprises at least three travelling wheel supporting legs (22) which are uniformly distributed in the circumference, one end of each travelling wheel supporting leg (22) is fixed on the periphery of a corresponding travelling joint (21), the other end of each travelling wheel supporting leg is provided with a travelling wheel (23) through a bracket in a rotating mode, and the travelling wheels (23) are respectively in contact with the inner wall of the pipe to be cleaned and can roll on the inner wall of the pipe to be cleaned.

5. The multifunctional pipe tool inner wall cleaning device according to claim 4, wherein: the walking wheel (23) is a universal walking wheel, and the surface of the walking wheel (23) is provided with a bionic non-smooth structural layer (231) for reducing friction resistance between the walking wheel (23) and the inner wall of the pipe, reducing adhesion effect of dirt on the inner wall of the pipe to the walking wheel (23) and improving wear resistance of the walking wheel (23).

6. The multifunctional pipe tool inner wall cleaning device according to claim 5, wherein: the bionic non-smooth structural layer (231) is one or a combination of a plurality of pits, convex hulls or ribs.

7. A multifunctional pipe tool inner wall cleaning device according to any one of claims 1 to 6, characterized in that: the spray head assembly (12) comprises a nozzle elbow joint (121) and a nozzle (122), one end of the nozzle elbow joint (121) is detachably arranged on the periphery of the spray cylinder (1) and is communicated with the cavity (11) through a corresponding channel (13), the nozzle (122) is detachably arranged at the other end of the nozzle elbow joint (121), and an included angle is formed between the spraying direction of the nozzle (122) and the axis of a pipe tool to be cleaned αAn included angle formed by an extension line of a connecting line between the corresponding spray head component (12) and the axis of the spray cylinder (1)βAnd is less than or equal to 20 degreesα≤80°，15°≤β≤35°。

8. The multifunctional pipe tool inner wall cleaning device according to claim 7, wherein: the spray cylinder (1) is positiveNPrismatic structure, andNand the spray head components (12) are uniformly distributed on each side surface of the spray cylinder (1) in a circumference manner.

9. A cleaning method of a multifunctional pipe tool inner wall cleaning apparatus according to any one of claims 1 to 8, comprising the steps of:

step two: placing the whole cleaning device into one end of the pipe to be cleaned, and ensuring that the end provided with the plug (211) faces the other end of the pipe to be cleaned;

step three: starting a high-pressure cleaning system to clean the inner wall of a pipe tool, namely, cleaning liquid or high-pressure air flow output by the high-pressure cleaning system sequentially passes through a pipe cleaner (3), a traveling joint (21) corresponding to a liquid outlet end, a central shaft (4), a cavity (11) and a spray head assembly (12), finally, forming high-pressure jet flow at a nozzle (122) to spray the high-pressure jet flow to the inner wall of the pipe tool, cleaning the inner wall of the pipe tool, wherein in the process, the reverse thrust of the high-pressure jet flow pushes a spray drum (1) to rotate and synchronously drives a plurality of steel brush assemblies (5) to rotate to scrape the inner wall of the pipe tool, and synchronously, the reverse thrust of the high-pressure jet flow pushes the spray drum (1) to axially move and synchronously drives a traveling mechanism (2) and the pipe cleaner (3) to axially move along the inner wall of the pipe tool, and scraping the inner wall of the pipe tool is carried out in the moving process of the pipe cleaner (3) until the whole device moves along the inner wall of the pipe tool;

10. The cleaning method of the multifunctional pipe inner wall cleaning device according to claim 9, wherein the cleaning method comprises the following steps: the high-pressure cleaning system is a high-pressure liquid cleaning system or a high-pressure air flow cleaning system; the high-pressure liquid cleaning system comprises a high-pressure slurry pump and a liquid storage tank, wherein the input end of the high-pressure slurry pump is communicated with the liquid storage tank through a high-pressure rubber pipe, the output end of the high-pressure slurry pump is communicated with the liquid inlet end through a high-pressure rubber pipe, and cleaning liquid is filled in the liquid storage tank; the high-pressure air flow cleaning system is a high-pressure air pump or an air compressor, and the output end of the high-pressure air flow cleaning system is communicated with the liquid inlet end through a high-pressure rubber pipe.