CN212702636U - Pipeline cleaning structure for paint conveying and mixing system - Google Patents
Pipeline cleaning structure for paint conveying and mixing system Download PDFInfo
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- CN212702636U CN212702636U CN202021415655.2U CN202021415655U CN212702636U CN 212702636 U CN212702636 U CN 212702636U CN 202021415655 U CN202021415655 U CN 202021415655U CN 212702636 U CN212702636 U CN 212702636U
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Abstract
The utility model particularly relates to a pipeline washs structure for defeated paint mixing system, include: the branch control valve is arranged on the branch pipeline and is electrically connected with the controller; the inlet end of the extension pipeline is communicated with the outlet end of the branch pipeline, and the outlet end of the extension pipeline is communicated with the collection inlet end of the waste liquid collection container; an extension pipeline control valve is arranged on the extension pipeline; the cleaning liquid output pipeline is used for outputting cleaning liquid; the cleaning liquid output end of the cleaning liquid output pipeline is communicated with the position, relatively close to the inlet end, of the branch pipeline, and a cleaning control valve is arranged on the cleaning liquid output pipeline; the gas output pipeline is used for outputting gas; the gas output end of the gas output pipeline is communicated with a position, relatively close to the outlet end, on the extension pipeline, and a blowback control valve is arranged on the gas output pipeline. The utility model provides a pipeline washs structure can be alone, effectual washing branch pipeline to can compromise and promote pipeline cleaning efficiency and pipeline cleaning performance, and can assist the work effect that promotes defeated accent lacquer system.
Description
Technical Field
The utility model relates to an automobile coating is defeated to transfer lacquer technical field, concretely relates to pipeline cleaning structure for defeated accent lacquer system.
Background
In the automobile coating process, a paint conveying and mixing system is one of important components, and the function of the paint conveying and mixing system is to convey paint (paint) with proper pressure, flow and viscosity to each spraying station. The existing paint conveying and mixing system mainly comprises a main pipe circulation system, a two-wire circulation system and a three-wire circulation system, wherein the main pipe circulation system has the advantages of easy cleaning of a main pipe, recoverable paint, wide system viscosity range, capability of expanding newly-added stations on the existing system without influencing the flow distribution of each spraying station and the like, and is widely applied. The main pipe circulating paint conveying and mixing system mainly comprises a paint supply unit for storing paint, a main pipeline for outputting the paint by the paint supply unit, and a branch pipeline, wherein the inlet end of the branch pipeline is communicated with the main pipeline, and the outlet end of the branch pipeline is communicated with a spray gun; when in paint spraying, the paint supplying unit outputs paint through the main pipeline (the paint circulates in the main pipeline all the time), the branch pipeline is used for conveying the paint in the main pipeline to the corresponding spray gun, and the spray gun finishes the paint spraying.
In the actual working process, the paint in the main pipeline of the main pipeline circulating paint conveying and mixing system is always in a circulating state, the branch pipeline can flow only during spraying, the main pipeline stops supplying paint to the branch pipeline after the spraying work is finished (particularly during the period of stopping work or stopping work), the paint in the branch pipeline is in a stopping state, and the paint is a mixture easy to precipitate, so that the paint can be adhered to and precipitate on the pipe wall of the pipeline after the paint conveying and mixing system stops working. The main pipe circulating paint conveying and mixing system often needs to discharge the precipitated paint in the branch pipeline to a waste liquid collecting pipeline before spraying, otherwise the problems of particles and uneven spraying are easily caused during paint spraying, and the working effect of the paint conveying and mixing system is poor. To solve the problem, chinese patent publication No. CN108311491A discloses a paint pipeline cleaning system, which includes a first color changing valve and a second color changing valve, the first color changing valve and the second color changing valve are respectively connected to a paint pipeline and are connected to the vicinity of two ports of the paint pipeline, the first color changing valve and the second color changing valve are further respectively connected to one end of a first compressed air pipeline and one end of a second compressed air pipeline, the other ends of the two compressed air pipelines are respectively connected to an air source, a ball is disposed in one of the compressed air pipelines, the first color changing valve and the second color changing valve are further respectively connected to one end of a solvent pipeline, the other end of the solvent pipeline is connected to a solvent pool or a waste solvent waste liquid collecting container, and a first negative pressure pump for extracting a solvent is disposed on the solvent pipeline.
The paint pipeline cleaning system in the existing scheme is also a pipeline cleaning structure, and the working state of each color changing valve is controlled through a controller so as to clean the pipeline. However, the existing pipeline cleaning structure needs to clean the main pipeline and the branch pipelines simultaneously when cleaning the pipelines, so that the following problems exist: because the pipeline of main pipeline is very long for need consume a large amount of time when wasing the pipeline, and need consume a large amount of cleaning solution, need empty the lacquer material in the main pipeline, retrieve when wasing the pipeline simultaneously, need consume a large amount of time and manpower. In actual work, even if the paint conveying and mixing system stops working, paint in the main pipeline is in circulating work all the time, namely the paint in the main pipeline is not easy to precipitate, namely the main pipeline only needs to be cleaned regularly before the color of the system is changed or when the same paint is not used for a long time (such as weeks) or every year, and only the branch pipeline needs to be cleaned every time. Therefore, the pipeline cleaning mode of the existing pipeline cleaning structure consumes long time, wastes much cleaning solution and consumes much manpower, so that the existing pipeline cleaning structure has the problems of low pipeline cleaning efficiency and poor pipeline cleaning effect, and the working effect of a paint conveying and mixing system is poor. Therefore, how to design a pipeline cleaning structure capable of improving the pipeline cleaning efficiency and the pipeline cleaning effect at the same time is an urgent need to solve the problem of assisting in improving the working effect of a paint conveying and mixing system.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a can be alone, effectual pipeline cleaning structure who washs a pipeline to compromise promotion pipeline cleaning efficiency and pipeline cleaning performance, and can assist the work effect who promotes defeated accent lacquer system.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a pipeline washs structure for failing transfer paint system, includes:
the branch control valve is arranged on the branch pipeline and is electrically connected with the controller; the inlet end of the extension pipeline is communicated with the outlet end of the branch pipeline, and the outlet end of the extension pipeline is communicated with the collection inlet end of the waste liquid collection container; the extension pipeline is provided with an extension pipeline control valve which is electrically connected with the controller; the cleaning liquid output pipeline is used for outputting cleaning liquid; the cleaning liquid output end of the cleaning liquid output pipeline is communicated with the position, relatively close to the inlet end, of the branch pipeline, and a cleaning control valve electrically connected with the controller is arranged on the cleaning liquid output pipeline; the gas output pipeline is used for outputting gas; and the gas output end of the gas output pipeline is communicated with a position, which is relatively close to the outlet end, on the extension pipeline, and a blowback control valve electrically connected with the controller is arranged on the gas output pipeline. The cleaning liquid input end of the cleaning liquid output pipeline is communicated with a cleaning source in which the cleaning liquid is stored; the gas input end of the gas output pipeline is communicated with a gas source stored with compressed air.
In the actual cleaning process, firstly, the branch control valve and the blowback control valve are controlled to be switched on, and the extension pipeline control valve and the cleaning control valve are controlled to be switched off, so that the gas output pipeline outputs gas to blow back paint in the extension pipeline and the branch pipeline to the main pipeline; then, control branch road control valve and blowback control valve turn-offs, and control washing control valve and extend the pipeline control valve and switch on to make cleaning solution output cleaning solution wash branch pipeline and extension pipeline, and the cleaning solution in the branch pipeline flows out to the waste liquid collecting container along extending the pipeline.
In the scheme, the branch control valve can cut off a passage formed between the main pipeline and the branch pipeline, so that the branch pipeline can be cleaned independently (without affecting the main pipeline), the problems of long consumed time, much waste of cleaning solution, much consumed labor and the like caused by the need of cleaning the main pipeline during pipeline cleaning can be solved, and the cleaning efficiency and the cleaning effect of the pipeline can be improved; secondly, before the main pipeline and the branch pipelines are cut off, the air outlet pipeline of the air guide body is guided through the blowback control valve, so that the paint in the branch pipelines can be blown back into the main pipeline by the output air, the paint in the branch pipelines can be recycled before the branch pipelines are cleaned, the waste of the paint can be avoided, and the cleaning effect of the pipelines can be improved; furthermore, the cleaning liquid output pipeline and the extension pipeline can be communicated through the cleaning control valve and the extension pipeline control valve so as to clean the branch pipeline, discharge waste liquid and further ensure the cleaning effect of the pipeline; in addition, the communicating position of the cleaning liquid output pipeline enables the branch pipeline to be cleaned from the position of the branch pipeline relatively close to the inlet end, so that the whole branch pipeline (and the extension pipeline) can be better cleaned, and the cleaning effect of the pipeline (branch pipeline) can be improved; the communication position of the gas output pipeline enables the gas to be output from the position of the outlet end of the extension pipeline, so that the paint in the branch pipeline (and the extension pipeline) can be blown back to the main pipeline better, the paint can be recovered better (the waste of the paint is avoided), and the cleaning effect of the pipeline (the branch pipeline) can be improved; in addition, the mode of valve control still has job stabilization, advantage with low costs in this scheme, is favorable to assisting the cleaning performance of lifting line. Therefore, the pipeline cleaning structure in this scheme can be alone, effectual washing branch pipeline to can compromise and promote pipeline cleaning efficiency and pipeline cleaning performance, and can assist the work effect who promotes defeated accent lacquer system.
Preferably, the pipe cleaning structure further includes: the inlet end of the cleaning solution recovery pipeline is communicated with the position, between the outlet end and the cleaning control valve, on the cleaning solution output pipeline, and the outlet end is communicated with the collection inlet end of a waste liquid collection container; and a recovery control valve electrically connected with the controller is arranged at the position of the inlet end of the cleaning liquid recovery pipeline.
In the actual cleaning process, after the cleaning solution is output by the cleaning solution output pipeline and cleaned the branch pipeline, the cleaning solution inevitably adheres to the inner side pipe wall of the branch pipeline, so that the paint can be mixed with the cleaning solution and generate bubbles when the branch pipeline is next paint supply, and the working effect of the paint conveying and mixing system is poor (namely the spraying effect of the paint is poor). To this problem, this scheme has cleaning solution recovery pipeline in cleaning solution output pipeline intercommunication, and set up the recovery control valve on cleaning solution recovery pipeline, make after pipeline cleaning unit output cleaning solution washs branch pipeline, can switch on gas output pipeline through the blowback control valve, in order to export gas and clear up the residual cleaning solution in extension pipeline and the branch pipeline, and the cleaning solution that is cleared up can be carried along cleaning solution recovery pipeline and retrieve to waste liquid collecting container in, and then can realize the clearance to the adhesion cleaning solution in the branch pipeline, the cleaning effect of pipeline has been promoted, thereby can assist the work effect (the spraying effect of paint vehicle) that promotes defeated paint mixing system; and, clear up the mode of remaining cleaning solution through output gas, can also carry out the drying to a pipeline, can further guarantee the cleaning performance of a pipeline to can avoid the moisture in the cleaning solution to influence the spraying effect of paint vehicle, thereby further supplementary work effect that has promoted defeated accent lacquer system.
Preferably, the pipe cleaning structure further includes: the liquid level detector is used for acquiring paint liquid level data of paint in the branch pipeline and is arranged on the branch pipeline and positioned between the connection position of the cleaning liquid output pipeline and the branch control valve; the liquid level detector is in signal connection with the controller.
In the actual cleaning process, the gas output pipeline blows back the paint in the branch pipeline to the main pipeline in a gas output mode, but in the process of blowing back the gas, once the gas enters the main pipeline, bubbles are mixed in the paint in the main pipeline, and then the working effect of the paint conveying and adjusting system is poor (namely the spraying effect of the paint is poor). To this problem, this scheme sets up the liquid level detector at the position department that is close to the entry end relatively on the branch pipeline, when making gaseous output pipeline output gas blowback paint vehicle, the liquid level detector can acquire the liquid level height of paint vehicle in real time, make and to control the blowback control valve and turn off before gaseous entering main line, with can stop output gas (and control branch road control valve and block supply branch pipeline and main line), with can avoid gaseous entering main line, can guarantee the cleaning performance of branch pipeline, and can assist the work effect that promotes defeated accent lacquer system (the spraying effect of paint vehicle promptly).
Preferably, the bypass control valve is provided at an inlet end position of the bypass line.
In the actual cleaning process, the inlet end position of the branch pipeline of the branch control valve is positioned, so that the branch pipeline and the main pipeline can be better blocked when the branch control valve is turned off, residual paint in the branch pipeline can be reduced as much as possible, and the cleaning effect of the auxiliary lifting pipeline (branch pipeline) is facilitated.
Preferably, the extension line control valve is provided at an outlet end position of the extension line.
In actual cleaning process, will extend the pipeline control valve and locate the exit end position that extends the pipeline for can extend the break-make of pipeline at the exit end position control that extends the pipeline, this is favorable to controlling the outflow of cleaning solution waste liquid, thereby can the cleaning performance of pipeline.
Preferably, the cleaning control valve is disposed on the cleaning liquid output line at a position relatively close to the cleaning liquid output end.
In actual cleaning process, locate the cleaning solution output pipeline with the washing control valve and go up the position that is close to the cleaning solution output relatively for when washing the control valve and turn-off (normally supply lacquer or wash and accomplish), the backward flow that cleaning solution waste liquid and paint vehicle can be as few as possible is not only favorable to promoting the cleaning performance of pipeline to the cleaning solution output pipeline, and the work effect of defeated accent lacquer system of supplementary promotion that can also be better.
Preferably, the blowback control valve is provided at a gas output end position of the gas output pipeline.
In actual cleaning process, locate gas output end position of gas output pipeline with the blowback control valve for when the blowback control valve is turn-off (normally supply lacquer or cleaning process in), cleaning solution waste liquid and paint vehicle can be as few as possible in the gaseous output pipeline of inflow, not only be favorable to promoting the cleaning performance of pipeline, the work effect of defeated accent lacquer system of supplementary promotion that can also be better.
Preferably, the inlet end of the extension pipeline, the outlet end of the branch pipeline and the inlet end of the spray gun are communicated with each other through a tee joint.
In the actual working process, the outlet end of the branch pipeline, the inlet end of the spray gun and the inlet end of the extension pipeline are communicated with each other through a tee joint; the branch pipeline can be formed to reach the path of the spray gun (the paint can be output from the spray gun) when the normal spraying is carried out, and the branch pipeline can be formed to reach the path of the extension pipeline (the branch pipeline is convenient to clean) when the branch pipeline is cleaned, so that the cleaning effect of the branch pipeline can be further improved on the premise of ensuring the normal operation of the spraying work.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a pipeline cleaning structure according to an embodiment;
FIG. 2 is a schematic structural diagram of another pipeline cleaning structure according to the second embodiment;
fig. 3 is a schematic structural diagram of another pipeline cleaning structure in the third embodiment.
Reference numerals in the drawings of the specification include: paint supply unit 1, main pipeline 11, branch pipeline 2, branch control valve 3, extension pipeline 41, extension pipeline control valve 42, waste liquid collecting container 43, gas output pipeline 51, blowback control valve 52, cleaning liquid output pipeline 61, washing control valve 62, cleaning liquid recovery pipeline 63, recovery control valve 64, liquid level detection unit 7.
Detailed Description
The following is further detailed by the specific embodiments:
the first embodiment is as follows:
the embodiment discloses a pipeline cleaning structure for a paint conveying and mixing system.
In this embodiment, the paint delivery and mixing system includes a paint supply unit 1 storing paint, a main pipeline 11 for the paint supply unit 1 to output paint, a branch pipeline 2 having an inlet end communicated with the main pipeline 11 and an outlet end communicated with a spray gun, and a controller for controlling the operation of the whole paint delivery and mixing system; when spraying paint, the paint supply unit 1 outputs paint through the main pipeline 11 (the paint circulates in the main pipeline 11 all the time), and the branch pipeline 2 is used for conveying the paint in the main pipeline 11 to the corresponding spray gun, and the spray gun finishes the spraying of the paint.
Specifically, as shown in fig. 1: a pipeline washs structure for failing transfer paint system, includes:
the branch control valve 3 is arranged on the branch pipeline 2 and is electrically connected with the controller; an extension pipeline 41, wherein the inlet end of the extension pipeline 41 is communicated with the outlet end of the branch pipeline 2, and the outlet end of the extension pipeline is communicated with the collection inlet end of a waste liquid collection container 43; an extension pipeline control valve 42 electrically connected with the controller is arranged on the extension pipeline 41; a cleaning liquid output line 61 for outputting cleaning liquid; the cleaning liquid output end of the cleaning liquid output pipeline 61 is communicated with the position, relatively close to the inlet end, on the branch pipeline 2, and a cleaning control valve 62 electrically connected with the controller is arranged on the cleaning liquid output pipeline 61; a gas output line 51 for outputting gas; the gas output end of the gas output pipeline 51 is communicated with a position on the extension pipeline 41 relatively close to the outlet end, and a blowback control valve 52 electrically connected with the controller is arranged on the gas output pipeline 51. The cleaning liquid output pipeline 61 is provided with a cleaning liquid input end communicated with a cleaning source stored with the cleaning liquid, and further comprises a cleaning source control valve for controlling the start and stop of the cleaning source, wherein the cleaning source control valve is electrically connected with the controller; the gas input end of the gas output pipeline 51 is communicated with a gas source stored with compressed air, and the gas output pipeline also comprises a gas source electric control valve for controlling the start and stop of the gas source, and the gas source electric control valve is also electrically connected with the controller; for an air source without "anti-backflow" (preventing the cleaning liquid from flowing back to the air source), a check valve should be disposed on the air output line 51 to prevent the cleaning liquid from flowing back to the air source along the air output line 51 and affecting the normal operation of the air source.
During the actual cleaning process, firstly, the branch control valve 3 and the blowback control valve 52 are controlled to be switched on, and the extension pipeline control valve 42 and the cleaning control valve 62 are controlled to be switched off, so that the gas output pipeline 51 outputs gas to blow back paint in the extension pipeline 41 and the branch pipeline 2 to the main pipeline 11; then, the control branch control valve 3 and the blowback control valve 52 are turned off, and the cleaning control valve 62 and the extension line control valve 42 are controlled to be turned on, so that the cleaning liquid is outputted from the cleaning liquid output line 61 to clean the branch line 2 and the extension line 41, and the cleaning liquid in the branch line 2 flows out along the extension line 41 into the waste liquid collecting container 43.
In the embodiment, the branch control valve 3 can cut off a passage formed between the main pipeline 11 and the branch pipeline 2, so that the branch pipeline 2 can be cleaned independently (without affecting the main pipeline 11), the problems of long consumed time, much cleaning solution waste, much manpower consumption and the like caused by the need of cleaning the main pipeline 11 during pipeline cleaning can be solved, and the cleaning efficiency and the cleaning effect of the pipeline can be improved; secondly, before the main pipeline 11 and the branch pipelines 2 are isolated, the gas output pipeline 51 is conducted through the blowback control valve 52, so that the paint in the branch pipelines 2 can be blown back into the main pipeline 11 by the output gas, the paint in the branch pipelines 2 can be recycled before the branch pipelines 2 are cleaned, the waste of the paint can be avoided, and the cleaning effect of the pipelines can be improved; further, the cleaning liquid output pipeline 61 and the extension pipeline 41 can be communicated through the cleaning control valve 62 and the extension pipeline control valve 42, so that the branch pipeline 2 can be cleaned, waste liquid can be discharged, and the cleaning effect of the pipelines can be further ensured; moreover, the communication position of the cleaning liquid output pipeline 61 enables the branch pipeline 2 to be cleaned from the position where the branch pipeline 2 is relatively close to the inlet end, so that the whole branch pipeline 2 (and the extension pipeline 41) can be better cleaned, and the cleaning effect of the pipeline (the branch pipeline 2) can be improved; the communication position of the gas output pipeline 51 enables the gas to be output from the outlet end position of the extension pipeline 41, so that the paint in the branch pipeline 2 (and the extension pipeline 41) can be blown back to the main pipeline 11 better, the paint can be recovered better (the waste of the paint is avoided), and the cleaning effect of the pipeline (the branch pipeline 2) can be improved; in addition, the mode of valve control still has job stabilization, advantage with low costs in this embodiment, is favorable to assisting the cleaning performance of lift line. Therefore, the pipeline cleaning structure in this embodiment can wash branch pipeline 2 alone, effectually to can compromise promotion pipeline cleaning efficiency and pipeline cleaning effect, and can assist the work effect that promotes defeated accent lacquer system.
In the specific implementation process, the branch control valve 3 is arranged at the inlet end of the branch pipeline 2. In this embodiment, the branch control valve 3 is an existing electric control valve.
In the actual cleaning process, with branch control valve 3 branch pipeline 2's entry end position for branch control valve 3 can be better when shutting off block branch pipeline 2 and main line 11, and can make the paint vehicle of surplus in the branch pipeline 2 as few as possible, be favorable to assisting the cleaning performance who promotes pipeline (branch pipeline 2).
In one embodiment, the extension line control valve 42 is disposed at an outlet end of the extension line 41. In this embodiment, the extension line control valve 42 is a conventional electrically controlled valve.
In the actual cleaning process, the extension line control valve 42 is provided at the outlet end position of the extension line 41, so that the on/off of the extension line 41 can be controlled at the outlet end position of the extension line 41, which is advantageous for controlling the outflow of the waste cleaning liquid, thereby enabling the cleaning effect of the line.
In one embodiment, the purge control valve 62 is disposed on the cleaning liquid output line 61 relatively close to the cleaning liquid output. In this embodiment, the purge control valve 62 is a conventional electrically controlled valve.
In actual cleaning process, locate cleaning solution output 61 on the position that is close to the cleaning solution output relatively with washing control valve 62 for when washing control valve 62 and turn-off (normally supply lacquer or wash and accomplish), the backward flow that cleaning solution waste liquid and paint vehicle can be as few as possible is not only favorable to promoting the cleaning performance of pipeline to cleaning solution output 61 in, can also be better supplementary the promotion defeated work effect of transferring the lacquer system.
In one embodiment, the blowback control valve 52 is disposed at the gas output end of the gas output line 51. In this embodiment, the blowback control valve 52 is a conventional electrically controlled valve.
In actual cleaning process, locate gaseous output end position of gaseous output pipeline 51 with blowback control valve 52 for when blowback control valve 52 is turn-off (normally supply lacquer or cleaning process in), cleaning solution waste liquid and paint vehicle can be as few as possible in the gaseous output pipeline 51 of inflow, not only be favorable to promoting the cleaning performance of pipeline, the work effect of defeated accent lacquer system of defeated is transferred in supplementary promotion that can also be better.
In the specific implementation process, the inlet end of the extension pipeline 41, the outlet end of the branch pipeline 2 and the inlet end of the spray gun are communicated with each other through a tee joint.
In the actual working process, the outlet end of the branch pipeline 2, the inlet end of the spray gun and the inlet end of the extension pipeline 41 are communicated with each other through a tee joint; make when normal spraying, can form the route of branch pipeline 2 to the spray gun (paint vehicle can follow the spray gun output), and when wasing branch pipeline 2, can form branch pipeline 2 again to the route of extending pipeline 41 (be convenient for wash branch pipeline 2), can further promote the cleaning performance of branch pipeline 2 under the prerequisite of guaranteeing that spraying work normally goes on like this.
Example two:
the embodiment discloses a pipeline cleaning structure with another structure on the basis of the first embodiment.
As shown in fig. 2: the pipeline cleaning structure in this embodiment further includes:
the liquid level detector is used for acquiring paint liquid level data of paint in the branch pipeline 2 and is arranged on the branch pipeline 2 and positioned between the connection position of the cleaning liquid output pipeline 61 and the branch control valve 3; the liquid level detector is in signal connection with the controller.
In this embodiment, the function of the level detector to obtain the paint level and send a corresponding signal to the controller may be implemented as follows: an ultrasonic flow sensor can be adopted and is arranged at the corresponding position of the branch pipeline 2; when the paint liquid level in the branch pipeline 2 is higher or lower than the paint liquid level threshold value (namely the ultrasonic flow sensor corresponds to paint or air), the attenuation of the output wave signal of the ultrasonic flow sensor is very small; and when the paint liquid level in the branch pipeline 2 is equal to the paint liquid level threshold value (namely the ultrasonic flow sensor corresponds to the paint and air handover position), the attenuation of the output wave signal of the ultrasonic flow sensor can be suddenly increased (namely attenuation fluctuation occurs), at the moment, the paint liquid level is regarded as reaching the paint liquid level threshold value (namely the paint liquid level height value at the moment is the paint liquid level threshold value), when the controller receives the fluctuation of the wave signal attenuation, the control branch control assembly 3 and the blowback control valve 52 are turned off, and therefore the monitoring and the acquisition of the paint liquid level are achieved. For example, an FD-series ultrasonic flow sensor of Kenz can be adopted, the detection response time is about 50ms, and the accuracy of paint level monitoring can be well guaranteed.
In addition, if it is inconvenient to use the ultrasonic liquid level sensor in practical application, as another alternative implementation, a flow sensor may be adopted as the liquid level detector, and the usage mode is as follows: according to the data such as the pipeline length and the pipe diameter of the branch pipeline 2 and the extension pipeline 41, the total paint amount when the branch pipeline 2 and the extension pipeline 41 are filled with the paint is calibrated (namely the total amount of the paint can be contained in the branch pipeline 2 and the extension pipeline 41), then the flow sensor is installed at the corresponding position of the branch pipeline 2, in the paint back-blowing process, the flow sensor obtains the paint flow rate of the corresponding position of the branch pipeline 2 in real time, so that the back-blowing paint amount can be converted by monitoring the paint flow rate, and further the paint height (liquid level) of the residual paint in the branch pipeline 2 can be converted according to the residual paint amount in the branch pipeline 2 and the pipe diameter of the branch pipeline 2. For example: the branch pipeline 2 and the extension pipeline 41 can contain 2.0L of paint in total, when the paint is blown back, the flow sensor detects the flow rate of the paint, and when the paint is monitored to flow back for 1.8L, the paint level reaches a paint level threshold value (namely the paint level height value at this time is the paint level threshold value), at this time, the branch control assembly 3 and the blowback control valve 52 can be controlled to be turned off, so that the monitoring and the acquisition of the paint level are realized.
In the actual cleaning process, the paint in the branch pipeline 2 is blown back to the main pipeline 11 by the gas output pipeline 51 in a gas output mode, but in the process of blowing back by the gas, once the gas enters the main pipeline 11, bubbles are mixed in the paint in the main pipeline 11, and then the working effect of the paint transferring and adjusting system is poor (namely the spraying effect of the paint is poor). To this problem, this embodiment sets up the liquid level detector in the position department that is close to the entry end relatively on branch pipeline 2, when making gaseous output pipeline 51 export gas blowback paint vehicle, the liquid level detector can acquire the liquid level height of paint vehicle in real time, make and to control blowback control valve 52 to turn off before gaseous entering main pipeline 11, with can stop the output gas (and control branch control valve 3 and block and supply branch pipeline 2 and main pipeline 11), with can avoid gaseous entering main pipeline 11, can guarantee the cleaning performance of branch pipeline 2, and can assist the work effect that promotes defeated paint mixing system (the spraying effect of paint vehicle promptly).
Example three:
the embodiment discloses a pipeline cleaning structure with another structure on the basis of the first embodiment.
As shown in fig. 3: the pipeline cleaning structure in this embodiment further includes:
a cleaning liquid recovery pipeline 63, an inlet end of the cleaning liquid recovery pipeline 63 is communicated with the cleaning liquid output pipeline 61 at a position between the outlet end and the cleaning control valve 62, and the outlet end is communicated with a collection inlet end of the waste liquid collection container 43; a recovery control valve 64 electrically connected with the controller is arranged at the inlet end position of the cleaning liquid recovery pipeline 63.
In the actual cleaning process, after the cleaning solution is outputted by the cleaning solution output pipeline 61 and cleaned the branch pipeline 2, the cleaning solution inevitably adheres to the inner side pipe wall of the branch pipeline 2, so that the paint vehicle can be mixed with the cleaning solution and generate bubbles when the branch pipeline 2 is next supplied with paint, and the working effect of the paint conveying and mixing system is poor (namely, the spraying effect of the paint vehicle is poor). To this problem, in the present embodiment, the cleaning solution output pipeline 61 is communicated with a cleaning solution recovery pipeline 63, and the cleaning solution recovery pipeline 63 is provided with a recovery control valve 64, so that after the cleaning solution is output from the pipeline cleaning unit to clean the branch pipeline 2, the gas output pipeline 51 can be conducted through the blowback control valve 52, so as to be able to output gas to clean the residual cleaning solution in the extension pipeline 41 and the branch pipeline 2, and the cleaned cleaning solution can be conveyed to the waste solution collection container 43 along the cleaning solution recovery pipeline 63 to be recovered, thereby being able to clean the cleaning solution adhered to the branch pipeline 2, and improving the cleaning effect of the pipeline, thereby being able to assist in improving the working effect (spraying effect of paint) of the paint conveying and mixing system; and, clear up the mode of remaining cleaning solution through output gas, can also carry out the drying to branch pipeline 2, can further guarantee branch pipeline 2's cleaning performance to can avoid the moisture in the cleaning solution to influence the spraying effect of paint vehicle, thereby further supplementary work effect that has promoted defeated accent lacquer system.
The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements 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 (8)
1. A pipeline washs structure for failing to transfer paint system, its characterized in that includes:
the branch control valve is arranged on the branch pipeline and is electrically connected with the controller;
the inlet end of the extension pipeline is communicated with the outlet end of the branch pipeline, and the outlet end of the extension pipeline is communicated with the collection inlet end of the waste liquid collection container; the extension pipeline is provided with an extension pipeline control valve which is electrically connected with the controller;
the cleaning liquid output pipeline is used for outputting cleaning liquid; the cleaning liquid output end of the cleaning liquid output pipeline is communicated with the position, relatively close to the inlet end, of the branch pipeline, and a cleaning control valve electrically connected with the controller is arranged on the cleaning liquid output pipeline;
the gas output pipeline is used for outputting gas; and the gas output end of the gas output pipeline is communicated with a position, which is relatively close to the outlet end, on the extension pipeline, and a blowback control valve electrically connected with the controller is arranged on the gas output pipeline.
2. The piping cleaning structure for paint delivery and mixing system according to claim 1, further comprising:
the inlet end of the cleaning solution recovery pipeline is communicated with the position, between the outlet end and the cleaning control valve, on the cleaning solution output pipeline, and the outlet end is communicated with the collection inlet end of a waste liquid collection container; and a recovery control valve electrically connected with the controller is arranged at the position of the inlet end of the cleaning liquid recovery pipeline.
3. The piping cleaning structure for paint delivery and mixing system according to claim 1, further comprising:
the liquid level detector is used for acquiring paint liquid level data of paint in the branch pipeline and is arranged on the branch pipeline and positioned between the connection position of the cleaning liquid output pipeline and the branch control valve; the liquid level detector is in signal connection with the controller.
4. The pipeline cleaning structure for paint conveying and mixing system as claimed in claim 1, wherein: the branch control valve is arranged at the inlet end of the branch pipeline.
5. The pipeline cleaning structure for paint conveying and mixing system as claimed in claim 1, wherein: the extension pipeline control valve is arranged at the position of the outlet end of the extension pipeline.
6. The pipeline cleaning structure for paint conveying and mixing system as claimed in claim 1, wherein: the cleaning control valve is arranged at a position on the cleaning liquid output pipeline, which is relatively close to the cleaning liquid output end.
7. The pipeline cleaning structure for paint conveying and mixing system as claimed in claim 1, wherein: the blowback control valve is arranged at the position of the gas output end of the gas output pipeline.
8. The pipeline cleaning structure for paint conveying and mixing system as claimed in claim 1, wherein: the outlet end of the branch pipeline, the inlet end of the spray gun and the inlet end of the extension pipeline are communicated with each other through a tee joint.
Priority Applications (1)
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| CN202021415655.2U CN212702636U (en) | 2020-07-17 | 2020-07-17 | Pipeline cleaning structure for paint conveying and mixing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116764845A (en) * | 2023-08-14 | 2023-09-19 | 张家港市晨艺电子有限公司 | Paint spraying system capable of automatically switching paint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116764845A (en) * | 2023-08-14 | 2023-09-19 | 张家港市晨艺电子有限公司 | Paint spraying system capable of automatically switching paint |
| CN116764845B (en) * | 2023-08-14 | 2023-10-31 | 张家港市晨艺电子有限公司 | Paint spraying system capable of automatically switching paint |
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