CN110935698A - Pipeline cleaning method - Google Patents

Pipeline cleaning method Download PDF

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Publication number
CN110935698A
CN110935698A CN201911206936.9A CN201911206936A CN110935698A CN 110935698 A CN110935698 A CN 110935698A CN 201911206936 A CN201911206936 A CN 201911206936A CN 110935698 A CN110935698 A CN 110935698A
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CN
China
Prior art keywords
cleaning
valve
pipe
control valve
glue
Prior art date
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Granted
Application number
CN201911206936.9A
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Chinese (zh)
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CN110935698B (en
Inventor
屈钰钦
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Chongqing Hongguang Electromechanical Equipment Co ltd
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Chongqing Hongguang Mechanical And Electrical Engineering Co Ltd
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Priority to CN201911206936.9A priority Critical patent/CN110935698B/en
Publication of CN110935698A publication Critical patent/CN110935698A/en
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Publication of CN110935698B publication Critical patent/CN110935698B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0325Control mechanisms therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

The invention relates to the technical field of cleaning machinery, and particularly discloses a pipeline cleaning method, which comprises the following steps: step A, primary cleaning: the connection between the glue-opening pump and the second-stage cleaning pipe and the first direction valve is cut off, the first-stage cleaning pipe is connected with the first direction valve, a pressure pump is adopted to pump the high-viscosity medium in the first-stage cleaning pipe into the first direction control valve, the high-viscosity medium is extruded out of the first direction control valve onto the working pipeline, and the glue in the working pipeline is extruded out; step B, secondary cleaning: the connection between the glue opening pump and the first-stage cleaning pipe and the first direction valve is cut off, the second-stage cleaning pipe is connected with the first direction valve, the cleaning agent in the second-stage cleaning pipe is pumped into the first direction control valve, the cleaning agent is extruded to the working pipeline from the first direction control valve, and the high-viscosity medium and the residual glue in the working pipeline are extruded. The scheme is used for solving the problem that the working pipeline is not thoroughly cleaned by adopting a one-time cleaning mode for high-viscosity glue in the prior art.

Description

Pipeline cleaning method
Technical Field
The invention relates to the technical field of cleaning machines, in particular to a pipeline cleaning method.
Background
In an automobile production workshop, in order to complete the assembly of parts, various connection modes such as screw connection, welding and bonding can be adopted, and when bonding is adopted, in order to enable the position of the adhesive to be more accurate, the adhesive is usually coated by adopting an adhesive gun.
In order to realize the gluing of the glue gun for a long time in the prior art, the glue gun is connected with a working pipeline, the working pipeline is connected to a glue pump body, and high-viscosity glue flows through the working pipeline and is extruded out of the glue gun to a place to be glued by the glue pump body under the high pressure of the glue pump body.
When not needing the rubber coating, need clean working line, the clean mode to working line among the prior art is: the one-component cleaning agent is used for cleaning the working pipeline once, but the following problems exist in the mode:
firstly, after the working pipeline is cleaned by adopting the single-component cleaning agent, the cleaned working pipeline often has residues due to the high viscosity of glue in the working pipeline.
Second, the cleaning of working pipeline among the prior art needs to dismantle the working pipeline and wash alone, and the dismouting is troublesome.
Disclosure of Invention
The invention aims to provide a pipeline cleaning method to solve the problem that in the prior art, high-viscosity glue is not thoroughly cleaned in a one-time cleaning mode.
In order to achieve the above object, the basic scheme of the invention is as follows:
the pipeline cleaning method comprises the steps that a first direction control valve at least provided with four valve ports is installed at the connecting position of a working pipeline and a glue beating pump, the first direction control valve can be communicated with the glue beating pump and the working pipeline, the first direction control valve is also connected with a first-stage cleaning pipe and a second-stage cleaning pipe, high-viscosity media can flow in the first-stage cleaning pipe, and cleaning agents can flow in the second-stage cleaning pipe; one ends of the first-stage cleaning pipe and the second-stage cleaning pipe, which are far away from the first direction control valve, are connected with pressure pumps; the method comprises the following steps:
step A, primary cleaning: the connection between the glue opening pump and the second-stage cleaning pipe and the first direction valve is cut off, the connection between the first-stage cleaning pipe and the first direction valve is opened, a high-viscosity medium in the first-stage cleaning pipe is pumped into the first direction control valve by adopting a pressure pump, the high-viscosity medium is extruded out of the first direction control valve onto a working pipeline, and glue in the working pipeline is extruded out;
step B, secondary cleaning: the connection between the glue opening pump and the first-stage cleaning pipe and the first direction valve is disconnected, the connection between the second-stage cleaning pipe and the first direction valve is opened, the cleaning agent in the second-stage cleaning pipe is pumped into the first direction control valve by the pressure pump, and the cleaning agent is extruded to the working pipeline from the first direction control valve, so that the high-viscosity medium and the residual glue in the working pipeline are extruded.
Compare the beneficial effect in prior art:
when this scheme of adoption, through once clean and the secondary is clean to working channel, compare in prior art and only carry out once clear mode to glue, this scheme can utilize once clean will be difficult to clear glue to get rid of in a large number, cooperates the secondary again to clean, together gets rid of remaining glue and high viscosity medium, and the working channel can be cleaned (wherein the high viscosity medium has the regulation on mechanical seal manual, and the high viscosity medium refers to the medium that viscosity is greater than 0.7Pa.s (700 cP)).
Furthermore, one end of the working pipeline, which is far away from the first direction control valve, is also connected with a second direction control valve, and the second direction control valve is also connected with a glue gun; when the first cleaning and the second cleaning are carried out, the second directional control valve is communicated with the glue gun.
Has the advantages that: during the primary cleaning, the glue in the working pipeline and the glue gun is extruded by the high-viscosity medium, and during the secondary cleaning, the high-viscosity medium and the residual glue left in the working pipeline and the glue gun are extruded or washed out by the cleaning agent, so that the cleaning of the working pipeline and the cleaning of the glue gun are realized.
In addition, because of beating the glue pump and connecting on first direction control valve, and penetrate gluey rifle lug connection on second direction control valve, then only need switch first direction control valve and beat the on-off relation of gluing pump, the clean pipe of one-level, the clean pipe of second grade, just can be convenient for realize normal rubber coating or wash the function that the working line was penetrated to the washing.
Furthermore, a return pipe is connected to the second directional control valve, and one end of the return pipe, which is far away from the second directional control valve, is communicated with a container; the method further comprises the steps of:
step C, recycling: when the secondary cleaning is carried out, the connection between the glue gun and the second directional control valve is disconnected after the glue gun is cleaned, so that the second directional control valve is connected with the return pipe, and the cleaning agent for flushing the working pipeline enters the container through the second directional control valve and the return pipe to be recovered.
Has the advantages that: the recycling of the cleaning agent is convenient to realize, so that the cleaning agent can be recycled.
Further, a pressure pump connected with the secondary cleaning pipe is communicated with the container.
Has the advantages that: the reservoir is connected to the pressure pump and the return line is connected to the reservoir, so that the cleaning agent flowing into the reservoir through the return line can be reused in good time.
Furthermore, the first directional control valve is a four-way valve with four valve ports, two of the four-way valve ports are connected with adjusting units, each adjusting unit comprises a connecting seat, an elastic part, a plug, a top block and a locking sleeve, the connecting seats are fixedly connected with a valve body arranged on the four-way valve, a fluid channel communicated with the valve ports is arranged in the connecting seats, and through holes communicated with the fluid channel are arranged on the connecting seats; the elastic piece is arranged in the fluid channel, one end of the elastic piece abuts against the valve body, the other end of the elastic piece is connected with a plug capable of plugging the through hole, the other end of the plug abuts against the top block, and a communication channel communicated with the through hole is arranged in the top block; the locking sleeve is sleeved on the ejector block and can abut against the ejector block, the locking sleeve is in threaded connection with the connecting seat, and the ejector block is sleeved with the sealing ring; the top block of one of the adjusting units is fixedly connected with the first-stage cleaning pipeline, and the top block of the other adjusting unit is fixedly connected with the second-stage cleaning pipeline.
Has the advantages that: four valve ports of the four-way valve just in time enable the glue-spraying pump, the first-stage cleaning pipe, the second-stage cleaning pipe and the working pipeline to be all connected to the four-way valve, and the four-way valve is provided with the adjusting unit, so that the connection or disconnection of the four-way valve, the first-stage cleaning pipe and the second-stage cleaning pipe can be controlled, and normal gluing, primary cleaning and secondary cleaning are conveniently realized.
Furthermore, the second directional control valve is a three-way valve with three valve ports, the valve ports of the three-way valve connected with the return pipe are provided with adjusting units, and the structure of the adjusting units on the three-way valve is the same as that of the adjusting units on the four-way valve.
Has the advantages that: the three valve ports just enable the working pipeline, the return pipe and the glue gun to be connected to the three-way valve; meanwhile, the valve port of the three-way valve is provided with the adjusting unit, so that the connection or disconnection of the return pipe and the three-way valve can be controlled, and the normal gluing, the primary cleaning and the secondary cleaning can be further conveniently realized.
Furthermore, two valve ports with adjusting units in the four-way valve are respectively positioned at two sides of the valve body of the four-way valve.
Has the advantages that: the regulating unit is located the valve body both sides, and then conveniently to the maintenance and the change of regulating unit, if two regulating unit symmetries set up in addition and can also make at clean pipeline's in-process, also more thorough to the washing of cross valve.
Further, vaseline is adopted as the high-viscosity medium; the viscosity of the vaseline is high, the glue can be pushed out, and meanwhile, the vaseline is easy to clean and convenient to remove during secondary cleaning.
Further, the cleaning agent adopts alcohol; after the vaseline is adopted for primary cleaning, after the vaseline and the glue in the working pipeline are cleaned for the second time by the alcohol, the working pipeline is cleaned more thoroughly, and the residual alcohol can be volatilized quickly, so that the working pipeline is dried quickly after being cleaned.
Further, the alcohol is industrial alcohol with the purity of 95%; the industrial alcohol has low cost.
Drawings
Fig. 1 is a schematic diagram of a forward structure according to a first embodiment of the present invention;
FIG. 2 is a front cross-sectional view of a four-way valve during a cleaning operation in accordance with an embodiment of the present invention;
FIG. 3 is a sectional view of the connection between the primary cleaning pipe and the top block according to one embodiment of the present invention;
FIG. 4 is a front cross-sectional view of a three-way valve during a cleaning operation in accordance with one embodiment of the present invention;
FIG. 5 is a front cross-sectional view of a four-way valve in a second embodiment of the present invention during a single cleaning operation.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a primary cleaning pipe 11, a secondary cleaning pipe 12, a four-way valve 13, a glue applying pump 14, a working pipeline 15, a high-viscosity gear pump 16, a three-way valve 17, a return pipe 18, a glue spraying gun 19, a container 20, a valve body 1, a valve port 2, a fluid channel 3, a spring 4, a gasket 5, a plug 6, a top block 7, a communication channel 8, a locking sleeve 9, an O-shaped sealing ring 10 and a connecting seat 111.
Example one
An embodiment substantially as described in figures 1 to 4 of the accompanying drawings:
the pipeline cleaning method needs a four-way valve 13 arranged between a working pipeline 15 and a glue spraying pump 14, and a three-way valve 17 is arranged between the tail end of the working pipeline 15 and a glue spraying gun 19.
Referring to fig. 2, the four-way valve 13 includes a valve body 1 and four valve ports 2, wherein the four valve ports 2 are respectively one at the left and right sides of the valve body 1 and two at the bottom; adjusting units are arranged on two valve ports 2 at the bottom of a valve body 1 of the four-way valve 13.
The adjusting unit comprises a connecting seat 111, a spring 4, a gasket 5, a plug 6, a top block 7 and a locking sleeve 9 (the locking sleeve 9 is equivalent to a locking nut), the connecting seat 111 and the valve body 1 are integrally formed, a fluid channel 3 communicated with the valve port 2 is arranged in the connecting seat 111, and a through hole communicated with the fluid channel 3 is arranged at the bottom of the connecting seat 111; the spring 4 is in a horn shape, the spring 4 is arranged in the fluid channel 3, the gasket 5 is arranged in the fluid channel 3, and the gasket 5 is abutted against the valve body 1 under the action of the spring 4; the bottom of the spring 4 is connected with a plug 6 capable of blocking the through hole, the locking sleeve 9 is vertically and slidably connected with a top block, a communicating channel 8 communicated with the through hole is integrally formed in the top block 7, and the top block 7 can be abutted against the plug 6 under the action of the locking sleeve 9.
A separation blade is integrally formed on the top block 7, the locking sleeve 9 can abut against the lower surface of the separation blade, the locking sleeve 9 is in threaded connection with the connecting seat 111, the top block 7 is vertically and slidably connected to the locking sleeve 9, and an O-shaped sealing ring 10 is clamped on the top block 7.
The bottom surface of the plug 6 is a spherical surface, and a concave surface matched with the spherical surface of the plug 6 is integrally formed on the through hole.
A connecting seat 111 is also connected to the left valve port 2 of the four-way valve 13, a spring 4 is also installed in the connecting seat 111, a plug 6 is fixedly connected to the left end of the spring 4, and the elastic force of the spring 4 can enable the plug 6 to plug the through hole of the connecting seat 111.
The four valve ports 2 of the four-way valve 13 are respectively connected with a glue pump 14, a first-stage cleaning pipe 11, a second-stage cleaning pipe 12 and a working pipeline 15, and the first-stage cleaning pipe 11, the second-stage cleaning pipe 12 and the four-way valve 13 are connected by adopting a structure (shown in figure 3) which is connected and locked by a ferrule connector when the pipeline is connected with the valve in the prior art.
Referring to fig. 1, one end of the first-stage cleaning pipe 11, which is far away from the four-way valve 13, is connected with a high-viscosity gear pump 16, the high-viscosity gear pump 16 is driven by a motor, the high-viscosity cleaning pipe further comprises a box body for storing vaseline, and the high-viscosity gear pump 16 can pump the vaseline stored in the box body into the first-stage cleaning pipe 11.
Referring to fig. 1 and 4, the outlet at the end of the working pipeline 15 is communicated with the left port 2 of the three-way valve 17 through a ferrule connector.
The three-way valve 17 differs from the four-way valve 13 in the following two points:
1. the three-way valve 17 has one less port 2 than the four-way valve 13 (as shown by the bottom one port 2 in fig. 4).
2. The connecting seat 111, the plug 6 and the spring 4 are not arranged on the left valve port 2 of the three-way valve 17.
The valve port 2 at the bottom of the three-way valve 17 is provided with an adjusting unit, the top block 7 of the adjusting unit is connected with a return pipe 18, and the connection mode of the return pipe 18 and the top block 7 is the same as that of the primary cleaning pipe 11 and the top block 7; the glue gun 19 is connected with the valve port 2 on the right side of the three-way valve 17 through threads; also includes a container 20 for storing alcohol; the right end of the second-stage cleaning pipe 12 is connected with a high-speed high-pressure water pump, the high-speed high-pressure water pump is driven by a motor, and the high-speed high-pressure water pump can pump alcohol stored in the container 20 into the second-stage cleaning pipe 12.
The bottom end of the return pipe 18 extends into a container 20 for storing alcohol, which is industrial alcohol with the purity of 95%.
The regulation in the four-way valve 13 is as follows:
taking the left adjusting unit in the valve port 2 at the bottom of the four-way valve 13 as an example, in the four-way valve 13, when the first-stage cleaning pipe 11 needs to be connected, the locking sleeve 9 at the left side at the bottom of the valve body 1 is rotated, the locking sleeve 9 spirally rises along the connecting seat 111, so that the locking sleeve 9 pushes the top block 7 to move upwards, the top block 7 is forced to push the plug 6 to overcome the elastic force of the spring 4 to move upwards, the plug 6 moves upwards, the through hole is blocked by the plug 6, the communication channel 8 of the top block 7 is communicated with the through hole, the fluid channel 3 and the valve port 2, and the state shown in fig. 2 is reached, and the communication between the first.
When the second-stage cleaning pipe 12 needs to be closed to be communicated with the valve port 2 in the four-way valve 13, taking the adjusting unit on the right side in the valve port 2 at the bottom of the four-way valve 13 as an example, the locking sleeve 9 is screwed, the locking sleeve 9 moves downwards along the connecting seat 111 in a spiral manner, so that the top block 7 is separated from the jacking pressure of the locking sleeve 9, the plug 6 tightly supports the plug 6 at the through hole by means of the elastic force of the spring 4, the through hole is blocked, and the glue in the second-stage cleaning pipe 12 cannot flow into the four-way valve 13 (the state shown in fig. 2 is.
When the four-way valve 13 meets the requirement that the working pipeline 15 normally works, the locking sleeve 9 is rotated, so that two through holes in the connecting seat 111 at the bottom are blocked by the plugs 6, and the first-stage cleaning pipe 11 and the second-stage cleaning pipe 12 cannot be communicated with the valve port 2 in the four-way valve 13. At this time, the glue can push the plug 6 in the connecting seat 111 on the left valve port 2 of the four-way valve 13 to move under the pressure of the glue applying pump 14, so that the plug 6 overcomes the elastic force of the spring 4 connected with the plug 6, the through hole on the connecting seat 111 is opened, the glue enters the four-way valve 13 from the glue applying pump 14, and the glue is conveniently output normally by the working pipeline 15.
The method comprises the following specific steps:
step A, primary cleaning: the glue-pumping pump 14 stops starting, and the locking sleeve 9 of the adjusting unit on the right side of the four-way valve 13 is screwed, so that the plug 6 on the adjusting unit on the right side of the four-way valve 13 blocks the through hole, and the communication between the secondary cleaning pipe 12 and the four-way valve 13 is blocked; and a locking sleeve 9 of the adjusting unit on the left side of the four-way valve 13 is screwed, and a plug 6 on the adjusting unit on the left side of the four-way valve 13 moves upwards to release the plugging of the through hole, so that the primary cleaning pipe 11 is communicated with the four-way valve 13.
Then, a motor for driving a high-viscosity gear pump 16 to be started is started, vaseline stored in a box body is pumped into a first-stage cleaning pipe 11 through the high-viscosity gear pump 16 at high pressure, and along with the continuous pumping of the high-viscosity gear pump 16 on the vaseline, the high-pressure vaseline flows through the first-stage cleaning pipe 11, a four-way valve 13, a working pipeline 15 and a three-way valve 17 and is finally extruded from a glue gun 19 (after the high-pressure vaseline enters the four-way valve 13, a spring 4 and a plug 6 connected to a valve port 2 on the left side of the four-way valve 13 block a through hole of a connecting seat 111); in the whole process of flowing the vaseline, the high-pressure vaseline pushes the glue to move from the working pipeline 15 to the glue gun 19, and finally the glue is extruded from the glue gun 19, when the glue is completely extruded and the vaseline is extruded from the glue gun 19, the motor for driving the high-viscosity gear pump 16 to start is stopped, and the cleaning is finished at one time.
Step B, secondary cleaning: the locking sleeves 9 of the two adjusting units are screwed so that the communication of the primary cleaning pipe 11 with the four-way valve 13 is blocked and the secondary cleaning pipe 12 is communicated with the four-way valve 13.
Then, a motor for driving the high-speed high-pressure water pump to start is started, alcohol stored in the container 20 is pumped into the secondary cleaning pipe 12 through the high-speed high-pressure water pump in a high-pressure mode, and with the continuous pumping of the alcohol by the high-speed high-pressure water pump, the high-pressure alcohol pushes vaseline and residual glue to flow through the secondary cleaning pipe 12, the four-way valve 13, the working pipeline 15 and the three-way valve 17 and finally is ejected from the glue gun 19. When the glue gun 19 starts to spray alcohol, the connection between the glue gun 19 and the three-way valve 17 is manually cut off, the locking sleeve 9 is rotated to connect the return pipe 18 and the three-way valve 17, and the alcohol can only return to the alcohol container 20 through the return pipe 18; the recycling of alcohol is convenient; when no impurities are seen in the alcohol flowing out of the return pipe 18, the motor driving the high-speed high-pressure water pump to start is stopped, and the secondary cleaning of the working pipe 15 is completed.
Step C, recycling: during secondary cleaning, after the glue gun 19 is cleaned, the connection between the glue gun 19 and the three-way valve 17 is manually disconnected, the locking sleeve 9 on the three-way valve 17 is screwed, so that the three-way valve 17 is connected with the return pipe 18, alcohol for flushing the working pipeline 15 enters the container 20 through the three-way valve 17 and the return pipe 18 for recycling, and the recycled alcohol is pumped into the secondary cleaning pipe again by the high-speed high-pressure water pump for recycling.
The glue in the working pipeline 15 and the glue gun 19 is basically removed after the primary cleaning through the primary cleaning and the secondary cleaning of the working pipeline 15; and then, matching with secondary cleaning, removing the residual glue and the vaseline together, and cleaning the working pipeline 15 and the glue gun 19.
In addition, under the condition that the working pipeline 15 normally works, the four-way valve 13 and the locking sleeve 9 of the three-way valve 17 are adjusted, so that the four-way valve 13 is not communicated with the primary cleaning pipe 11 and the secondary cleaning pipe 12, the three-way valve 17 is not communicated with the return pipe 18, but the three-way valve 17 is communicated with the glue gun 19; and then starting the glue applying pump 14, pumping the glue into the four-way valve 13 from the glue applying pump 14, extruding the glue from the valve port 2 connected with the working pipeline 15 of the four-way valve 13, extruding the glue into the working pipeline 15, then extruding the glue into the three-way valve 17 and from the valve port 2 connected with the glue spraying gun 19, and finally extruding the glue from the glue spraying gun 19 to finish the glue applying work under the normal work.
Therefore, when the scheme of the first embodiment is adopted, the functions of normally gluing or cleaning the working pipeline 15 and cleaning the glue spraying gun 19 can be conveniently realized only by switching the on-off relationship between the four-way valve 13 and the glue spraying pump 14, the primary cleaning pipe 11 and the secondary cleaning pipe 12 and the on-off relationship between the three-way valve 17 and the glue spraying gun 19 and the return pipe 18.
Example two
The second embodiment is substantially as shown in fig. 5, and the second embodiment is different from the first embodiment in that the four valve ports 2 of the four-way valve 13 are distributed differently in the second embodiment, and the two valve ports 2 with the adjusting units are respectively located at the upper and lower sides of the valve body 1 in fig. 5.
When the working line 15 is cleaned by using the four-way valve 13, the paths of the alcohol and the vaseline in the four-way valve 13 are the same. In the first embodiment, after the completion of one cleaning, the vaseline on the left side of the valve body 1 of the four-way valve 13 is not removed by the alcohol, but in the second embodiment, the alcohol can remove most of the vaseline left on the left side of the valve body 1 of the four-way valve 13, so that the four-way valve 13 can be cleaned more cleanly.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. The pipeline cleaning method is characterized in that a first direction control valve with at least four valve ports is installed at the connecting position of a working pipeline and a glue beating pump, the first direction control valve can be communicated with the glue beating pump and the working pipeline, the first direction control valve is also connected with a first-stage cleaning pipe and a second-stage cleaning pipe, a high-viscosity medium can flow in the first-stage cleaning pipe, and a cleaning agent can flow in the second-stage cleaning pipe; one ends of the first-stage cleaning pipe and the second-stage cleaning pipe, which are far away from the first direction control valve, are connected with pressure pumps; the method comprises the following steps:
step A, primary cleaning: the connection between the glue opening pump and the second-stage cleaning pipe and the first direction valve is cut off, the connection between the first-stage cleaning pipe and the first direction valve is opened, a high-viscosity medium in the first-stage cleaning pipe is pumped into the first direction control valve by adopting a pressure pump, the high-viscosity medium is extruded out of the first direction control valve onto a working pipeline, and glue in the working pipeline is extruded out;
step B, secondary cleaning: the connection between the glue opening pump and the first-stage cleaning pipe and the first direction valve is disconnected, the connection between the second-stage cleaning pipe and the first direction valve is opened, the cleaning agent in the second-stage cleaning pipe is pumped into the first direction control valve by the pressure pump, and the cleaning agent is extruded to the working pipeline from the first direction control valve, so that the high-viscosity medium and the residual glue in the working pipeline are extruded.
2. The pipeline cleaning method according to claim 1, wherein a second directional control valve is further connected to one end of the working pipeline, which is far away from the first directional control valve, and a glue gun is further connected to the second directional control valve; when the first cleaning and the second cleaning are carried out, the second directional control valve is communicated with the glue gun.
3. The pipeline cleaning method according to claim 2, wherein a return pipe is further connected to the second directional control valve, and a container is communicated with one end of the return pipe, which is far away from the second directional control valve; the method further comprises the steps of:
step C, recycling: when the secondary cleaning is carried out, the connection between the glue gun and the second directional control valve is disconnected after the glue gun is cleaned, so that the second directional control valve is connected with the return pipe, and the cleaning agent for flushing the working pipeline enters the container through the second directional control valve and the return pipe to be recovered.
4. The pipe cleaning method according to claim 3, wherein the pressure pump connected to the secondary cleaning pipe is communicated with a container.
5. The pipe cleaning method according to claim 3, wherein the first directional control valve is a four-way valve having four valve ports, two of the four-way valve ports are connected with an adjusting unit, the adjusting unit comprises a connecting seat, an elastic member, a plug, a top block and a locking sleeve, the connecting seat is fixedly connected with a valve body arranged on the four-way valve, a fluid channel communicated with the valve ports is arranged in the connecting seat, and a through hole communicated with the fluid channel is arranged on the connecting seat; the elastic piece is arranged in the fluid channel, one end of the elastic piece abuts against the valve body, the other end of the elastic piece is connected with a plug capable of plugging the through hole, the other end of the plug abuts against the top block, and a communication channel communicated with the through hole is arranged in the top block; the locking sleeve is sleeved on the ejector block and can abut against the ejector block, the locking sleeve is in threaded connection with the connecting seat, and the ejector block is sleeved with the sealing ring; the top block of one of the adjusting units is fixedly connected with the first-stage cleaning pipeline, and the top block of the other adjusting unit is fixedly connected with the second-stage cleaning pipeline.
6. The pipe cleaning method according to claim 5, wherein the second directional control valve is a three-way valve having three valve ports, the valve ports of the three-way valve connected to the return pipe are provided with adjusting units, and the structure of the adjusting units on the three-way valve is the same as that of the adjusting units on the four-way valve.
7. The pipe cleaning method according to claim 5, wherein two ports with the adjusting unit in the four-way valve are respectively located at both sides of a valve body of the four-way valve.
8. The pipe cleaning method according to any one of claims 1 to 7, wherein vaseline is used as the high viscosity medium.
9. The method of claim 8, wherein the cleaning agent is alcohol.
10. The pipe cleaning method according to claim 8, wherein the alcohol is industrial alcohol with a purity of 95%.
CN201911206936.9A 2019-11-29 2019-11-29 Pipeline cleaning method Active CN110935698B (en)

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CN203459252U (en) * 2013-09-02 2014-03-05 江苏正德力机械科技有限公司 Glue supply system
CN103785564A (en) * 2013-12-26 2014-05-14 福建铂阳精工设备有限公司 A and B adhesive filling device and method for keeping adhesive discharge state thereof
CN204107934U (en) * 2014-07-17 2015-01-21 深圳市富格科技开发有限公司 Glue inlet tube road cleaning device
US20180086620A1 (en) * 2016-09-28 2018-03-29 Soda Gun Jetter LLC Beverage dispenser cleaning device
CN108311491A (en) * 2017-12-29 2018-07-24 江阴名鸿车顶系统有限公司 Paint channel cleaning system and the method for using this cleaning systems paint channel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203459252U (en) * 2013-09-02 2014-03-05 江苏正德力机械科技有限公司 Glue supply system
CN103567121A (en) * 2013-11-01 2014-02-12 厦门精恒新自动化科技有限公司 Automatic dispensing cleaning and switching device and automatic dispensing cleaning and switching method
CN103785564A (en) * 2013-12-26 2014-05-14 福建铂阳精工设备有限公司 A and B adhesive filling device and method for keeping adhesive discharge state thereof
CN204107934U (en) * 2014-07-17 2015-01-21 深圳市富格科技开发有限公司 Glue inlet tube road cleaning device
US20180086620A1 (en) * 2016-09-28 2018-03-29 Soda Gun Jetter LLC Beverage dispenser cleaning device
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