CN114345156A - Bi-component coating mixing device and cleaning method - Google Patents
Bi-component coating mixing device and cleaning method Download PDFInfo
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- CN114345156A CN114345156A CN202210134454.2A CN202210134454A CN114345156A CN 114345156 A CN114345156 A CN 114345156A CN 202210134454 A CN202210134454 A CN 202210134454A CN 114345156 A CN114345156 A CN 114345156A
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- 238000002156 mixing Methods 0.000 title claims abstract description 78
- 239000011248 coating agent Substances 0.000 title claims abstract description 68
- 238000000576 coating method Methods 0.000 title claims abstract description 68
- 238000004140 cleaning Methods 0.000 title claims description 64
- 238000000034 method Methods 0.000 title claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 194
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000012459 cleaning agent Substances 0.000 claims description 73
- 238000007789 sealing Methods 0.000 claims description 51
- 239000003973 paint Substances 0.000 claims description 27
- 238000005507 spraying Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Abstract
The application discloses two-component coating mixing arrangement includes: a mixing member provided with a main agent passage for conveying a coating material and a curing agent passage for conveying a curing agent; the main agent passage and the curing agent passage are both provided with a feeding end and a discharging end; one end of the mixing pipe is communicated with the main agent passage discharge end and the curing agent passage discharge end to form a Y-shaped feeding structure for mixing the coating and the curing agent; the two control valves are respectively arranged at the discharge end of the main agent passage and the discharge end of the curing agent passage; and the on-off of the main agent passage, the curing agent passage and the mixing pipe are controlled correspondingly through the switch of the control valve. Two independent conveying pipelines are formed by the main agent passage and the curing agent passage, the traditional mixing device is changed to directly mix the coating and the curing agent, and the formed double-component coating is prevented from being accumulated for a long time and cannot be used for curing in a short time, so that the device is prevented from being blocked.
Description
Technical Field
The disclosure generally relates to the technical field of coating equipment, and particularly relates to a two-component coating mixing device and a cleaning method.
Background
In the coating industry, the use proportion of the bi-component coating is large at present; what is often said is a "two-component paint", which means in practice that the last paint to be used is prepared by itself from two factory-supplied paints and then used, and therefore is not prepared directly, since it must be used within a short time (within a few hours) after preparation, or else it will fail.
The two-component paint consists of a coating and a curing agent, wherein the curing agent accelerates the film forming speed of the coating, and then the coating and the curing agent are very easy to cure after being mixed together in proportion, so that equipment can be blocked if the coating and the curing agent cannot be used or cleaned in time, and a spraying appliance has great faults; the curing agent in the two-component coating is easy to cure and deteriorate when contacting with air, so that the quality of a paint film is poor, and equipment is blocked; therefore, there is a need for improvement of the existing coating apparatus structure.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a two-component paint mixing device and a cleaning method, which prevent accidental mixing, facilitate cleaning, reduce maintenance difficulty of coating equipment, reduce equipment failure rate, have a simple structure, and are easy to implement.
In a first aspect, the present application provides a two-component coating material mixing device comprising:
a mixing member provided with a main agent passage for conveying a coating material and a curing agent passage for conveying a curing agent; the main agent passage and the curing agent passage are both provided with a feeding end and a discharging end;
one end of the mixing pipe is communicated with the main agent passage discharge end and the curing agent passage discharge end to form a Y-shaped feeding structure for mixing the coating and the curing agent;
the two control valves are respectively arranged at the discharge end of the main agent passage and the discharge end of the curing agent passage; and the on-off of the main agent passage, the curing agent passage and the mixing pipe are controlled correspondingly through the switch of the control valve.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: a cleaning unit provided on the mixing part for cleaning the main agent passage or the curing agent passage.
According to the technical scheme provided by the embodiment of the application, the cleaning unit comprises:
the first cleaning agent pipeline is communicated with the curing agent passage and is used for conveying cleaning agents; a first cleaning agent valve arranged close to the curing agent passage is arranged on the first cleaning agent pipeline and used for controlling the connection and disconnection of the first cleaning agent pipeline and the curing agent passage;
a second cleaning pipe line including a cleaning agent delivery pipe line and a cleaning air pipe line connected to the main agent passage, the cleaning agent delivery pipe line being provided apart from the control valve of the main agent passage with respect to the cleaning air pipe line;
a second cleaning agent valve arranged close to the main agent passage is arranged on the cleaning agent conveying pipeline; and a cleaning air valve which is close to the main agent passage is arranged on the cleaning air pipeline.
According to the technical scheme that this application embodiment provided, still install on the washing air pipeline and keep away from the air check valve that the main agent passageway set up.
According to the technical scheme provided by the embodiment of the application, the main agent passage is also connected with an oil return piece, and the oil return piece is positioned between the feed end of the main agent passage and the control valve on the main agent passage and used for discharging waste liquid; and the oil return piece is provided with a waste liquid valve.
According to the technical scheme provided by the embodiment of the application, the curing agent passage and the main agent passage are respectively provided with the oil inlet valve, and the oil inlet valves are arranged close to one side of the corresponding feeding end.
According to the technical scheme provided by the embodiment of the application, the control valve is a one-way valve assembly; the one-way valve assembly includes:
the valve body is of a hollow structure; the valve body is provided with an inlet and an outlet; the inlet is connected with the main agent passage or the curing agent passage away from the discharge end of the main agent passage or the curing agent passage; the outlet is connected with the main agent passage or the part of the curing agent passage away from the discharge end of the main agent passage or the curing agent passage;
the sealing seat is arranged at the inlet, and a sealing groove is formed in the surface of the sealing seat, which is positioned in the valve body; the sealing seat is provided with an opening communicated with the inlet;
the sealing ball is arranged in the hollow structure of the valve body and can be in contact with the sealing seat;
the spring is arranged in the hollow structure of the valve body, one end of the spring is connected with the inner wall of the valve body at the outlet, and the other end of the spring is connected with the sealing ball;
when the main agent passage or the curing agent passage conveys the coating, the pressure of the coating can push the corresponding sealing ball to move, the sealing ball is separated from the sealing seat and compresses the spring, so that the corresponding passage is communicated with the mixing pipe, and the coating enters the mixing pipe;
when the mixing tube is filled with the coating mixture, the pressure of the coating mixture can push the corresponding sealing ball to be tightly pressed with the sealing seat, so that the corresponding passage and the mixing tube form an open circuit.
According to the technical scheme that this application embodiment provided, the seal groove lateral wall is equipped with the sealing washer.
According to the technical scheme provided by the embodiment of the application, the spraying valve is installed on the mixing pipe.
In a second aspect, the present application provides a cleaning method based on the above two-component paint mixing device, comprising the following steps:
closing the control valves of the main agent passage and the curing agent passage, and opening the spraying valve;
opening the first cleaning agent valve and the second cleaning agent valve in sequence, and keeping the corresponding set time range;
and repeating the steps until the cleaning is finished.
In summary, the present application specifically discloses a specific structure of a two-component paint mixing device. The application specifically designs a mixing piece, wherein a main agent passage is arranged on the mixing piece and is used for conveying the coating; a curing agent passage is arranged on the mixing piece and used for conveying curing agent; a Y-shaped feeding structure is formed by arranging a mixing pipe at the discharge end of the main agent passage and the discharge end of the curing agent passage, so that the coating and the curing agent are mixed in the mixing pipe to form a two-component coating; two independent conveying pipelines are formed by the main agent passage and the curing agent passage, the traditional mixing device is changed to directly mix the coating and the curing agent, and the formed double-component coating is prevented from being accumulated for a long time and cannot be used for curing in a short time, so that the device is prevented from being blocked.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a two-component paint mixing apparatus.
Fig. 2 is a schematic view of the overall structure of a two-component paint mixing apparatus.
Fig. 3 is a schematic view of a two-component paint mixing apparatus.
Fig. 4 is a schematic sectional view of the on-off valve.
Fig. 5 is a schematic view of the structure of the check valve assembly.
Fig. 6 is a schematic diagram of a two-component paint mixing apparatus.
FIG. 7 is a logic diagram of the present apparatus for periodic cleaning.
FIG. 8 is a logic diagram of the color changing and cleaning of the present apparatus.
Reference numbers in the figures: 1. a mixing member; 2. a main agent pathway; 3. a curing agent pathway; 4. a mixing tube; 5. a control valve; 6. a first cleaning agent pipeline; 7. a first cleaning agent valve; 8. a second cleaning agent pipeline; 9. a cleaning agent delivery line; 10. cleaning an air pipeline; 11. a second cleaning agent valve; 12. cleaning the air valve; 13. an air check valve; 14. an oil return member; 15. a waste liquid valve; 16. an oil inlet valve; 17. a sealing seat; 18. a sealing ball; 19. a spring; 20. a seal ring; 21. and (4) switching on and off the valve.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, 2 and 3, a first embodiment of a two-component paint mixing device according to the present application is shown, which comprises:
the mixing part 1 is a combined mixing part and can be freely disassembled, so that the maintenance is more convenient;
a main agent passage 2 provided on the mixing member 1 for conveying the coating material; a curing agent passage 3 provided on the mixing member 1 for conveying a curing agent; the main agent passage 2 and the curing agent passage 3 are both provided with a feeding end and a discharging end, so that corresponding conveying materials can enter the passages from the feeding ends and then are sent out from the corresponding discharging ends;
one end of the mixing pipe 4 is communicated with the discharge end of the main agent passage 2 and the discharge end of the curing agent passage 3 to form a Y-shaped feeding structure, and the coating conveyed by the main agent passage 2 and the curing agent conveyed by the curing agent passage 3 enter the mixing pipe 4 according to a set proportion, so that the coating and the curing agent are mixed in the mixing pipe 4 to form a two-component coating; and, the spray valve, set up on the mixing tube 4, and it locates at one end of the mixing tube 4 far away from main agent route 2, use and control the two-component coating to use.
The main agent passage 2 and the curing agent passage 3 form two independent conveying pipelines, so that the traditional mixing equipment is changed to directly mix the coating and the curing agent, the formed double-component coating is prevented from being accumulated for a long time, and the coating cannot be used up in a short time and cured, so that the equipment is blocked;
as shown in fig. 1, two control valves 5 are respectively installed at the discharge end of the main agent passage 2 and the discharge end of the curing agent passage 3, and the input and disconnection of the corresponding main agent and curing agent are controlled by the switch of the control valves 5.
The control valve 5 is of the type, for example, of a one-way valve assembly, in particular, as shown in fig. 5, comprising:
the valve body is of a hollow structure; the valve body is provided with an inlet and an outlet; the inlet is connected with the main agent passage 2 or the curing agent passage 3 away from the discharge end of the main agent passage; the outlet is connected with the main agent passage 2 or the curing agent passage 3 away from the discharge end of the main agent passage;
the sealing seat 17 is arranged at the inlet, and the surface of the sealing seat in the valve body is provided with a sealing groove for being matched with the sealing ball 18; moreover, the sealing seat 17 is provided with an opening communicated with the inlet;
the sealing ball 18 is arranged in the hollow structure of the valve body, can be contacted with the sealing seat 17 and is used for being matched with the sealing seat 17 to control the connection and disconnection of the inlet;
the spring 19 is arranged in the hollow structure of the valve body, one end of the spring 19 is connected with the inner wall of the valve body at the outlet, and the other end of the spring 19 is connected with the sealing ball 18 and used for providing elastic acting force for the sealing ball 18;
the sealing ball 18, the sealing seat 17 and the spring 19 form a one-way valve structure to prevent the mixed coating from flowing back;
when the main agent passage 2 or the curing agent passage 3 conveys the coating, the pressure of the coating can push the corresponding sealing ball 18 to move, the sealing ball 18 is separated from the sealing seat 17 and compresses the spring 19, so that the corresponding passage is communicated with the mixing tube 4, and the coating enters the mixing tube 4;
when the mixing tube 4 is filled with a coating mixture (the coating mixture is a two-component coating formed by mixing a coating in the main agent passage and a curing agent in the curing agent passage), the pressure of the coating mixture can push the corresponding sealing ball 18 and the sealing seat 17 to be tightly pressed, so that the corresponding passage and the mixing tube 4 form an open circuit, the coating mixture is prevented from entering the main agent passage or the curing agent passage, and the purpose of preventing the coating from flowing back is achieved.
As shown in fig. 5, the direction in which the main agent passage 2 or the curing agent passage 3 feeds the paint to the mixing pipe 4 is defined as the forward flow of the paint; the direction in which the coating mixture in the mixing tube 4 pushes the corresponding sealing ball 18 is defined as the coating reverse flow;
the coating positively flows, the coating pressure pushes the sealing ball, the spring is compressed, the inlet is opened, and the coating passes through; the coating flows reversely, the coating pushes the sealing ball to press the sealing seat, the passage is closed, the coating is disconnected, and the backflow is prevented;
the seal ring 20 is provided on the side wall of the seal groove, and further improves the sealing performance between the seal ball 18 and the seal groove at the inlet.
Further, still include: and a cleaning unit, which is provided on the mixing member 1, for cleaning the main agent passage 2 or the curing agent passage 3, so that the apparatus is cleaned more promptly.
As shown in fig. 4, the switching valve 21 is used for controlling the on-off of the corresponding pipeline; the on-off valve 21 includes: a first cleaning agent valve 7, a second cleaning agent valve 11, a cleaning air valve 12, a waste liquid valve 15 and an oil inlet valve 16;
as shown in fig. 6, specifically, the washing unit includes:
the first cleaning agent pipeline 6 is mainly used for cleaning the curing agent passage 3, is communicated with the curing agent passage 3 and is used for conveying cleaning agents;
the first cleaning agent valve 7 is arranged on the first cleaning agent pipeline 6, is close to the curing agent passage 3, and is used for controlling the connection and disconnection of the first cleaning agent pipeline 6 and the curing agent passage 3 so as to control the conveying of the cleaning agent;
a second cleaning pipe 8 for cleaning the main agent passage 2; the second cleaning line 8 includes a cleaning agent delivery line 9 and a cleaning air line 10 connected to the main agent passage 2, and the cleaning agent delivery line 9 is provided apart from the control valve 5 of the main agent passage 2 with respect to the cleaning air line 10; a cleaning agent delivery line 9 for delivering a cleaning agent to the main agent passage 2; a purge air line 10 for supplying purge air into the main agent passage 2;
the second cleaning agent valve 11 is installed on the cleaning agent conveying pipeline 9, is arranged close to the main agent passage 2, and is used for controlling the on-off of the cleaning agent conveying pipeline 9 and the main agent passage 2;
and a purge air valve 12 installed on the purge air line 10 and disposed adjacent to the main agent passage 2 for controlling the on/off of the purge air line 10 and the main agent passage 2.
Further, an air check valve 13, which is installed on the cleaning air line 10 and is disposed away from the main agent passage 2, is used for preventing the liquid medium inside the device from flowing back to the air line;
further, as shown in fig. 6, an oil return member 14, which is connected to the main agent passage 2 and is located between the feed end of the main agent passage 2 and the control valve 5 thereon, for discharging the waste liquid in the main agent passage 2;
and the waste liquid valve 15 is arranged on the oil return piece 14 and used for controlling the communication and the closing of the oil return piece 14 and the external environment.
And two oil inlet valves 16 are respectively arranged on the curing agent passage 3 and the main agent passage 2, are arranged close to one sides of the corresponding feeding ends and are used for controlling the opening and closing of the main agent passage 2 and the curing agent passage 3.
When the device is used for normal spraying, the oil inlet valve 16 on the main agent passage 2 is opened by supplying air through the oil inlet valve 16 on the main agent passage 2; the oil inlet valve 16 of the curing agent passage 3 is opened by supplying air through the oil inlet valve 16 on the curing agent passage 3; the spray valve is opened and the device begins spraying.
The filling step is required to be added for the first spraying after cleaning.
Example 2
A method of cleaning a two-component paint mixing apparatus according to example 1, comprising the steps of:
closing the control valves of the main agent passage and the curing agent passage, and opening the spraying valve;
opening the first cleaning agent valve and the second cleaning agent valve in sequence, and keeping the corresponding set time range;
and repeating the steps until the cleaning is finished.
In particular, the device has two cleaning modes of regular cleaning and color changing cleaning,
the regular cleaning is a periodic cleaning procedure of equipment for a fixed time, and mainly prevents impurities and condensate from being accumulated and blockage caused by long-term use.
The color changing and cleaning is a cleaning procedure carried out when the main agent or the curing agent of the coating changes the color or the type, and aims to clean the residual coating before cleaning and fill new coating.
When the mixing pipe is dirty, the short-time machine is stopped or the long-time machine is stopped, a regular cleaning mode is executed; when the main agent or the curing agent needs color changing, a color changing cleaning mode is executed.
The specific working process of the periodic cleaning is as follows:
as shown in fig. 7, the control valve of the curing agent passage and the control valve of the main agent passage are both closed and cut off, so that spraying is stopped, and the spraying valve is opened;
the first cleaning agent valve is supplied with gas and opened for about 0.2s, the first cleaning agent valve is opened for 0.5s, then the first cleaning agent valve is cut off for closing for about 0.2s, and the first cleaning agent valve is closed for 0.5 s; the first cleaning agent valve is aerated and opened for about 0.2s, the first cleaning agent valve is opened for 0.5s, then the first cleaning agent valve is de-aerated, the closing time is about 0.2s, and the de-aerated state of the first cleaning agent valve is kept;
the second cleaning agent valve is aerated and opened for about 0.2s, the second cleaning agent valve is opened for 0.5s, and then the second cleaning agent valve is de-aerated and closed for about 0.2 s;
the cleaning air valve is opened for about 0.2s, the cleaning air valve is opened for 0.5s, and then the cleaning air valve is stopped for about 0.2 s;
alternating n times, wherein the second cleaning agent valve is opened and closed for 4 times, the cleaning air valve is opened and closed for 3 times, and the last time when the second cleaning agent valve is opened is kept for about 2.5s (according to the field filling time)
A paint filling procedure is performed before spraying.
The specific working process of color changing and cleaning is as follows:
as shown in fig. 8, curing agent: the spraying valve is kept in an open state; the control valve of the curing agent passage supplies gas and keeps the opening state; a cleaning agent is introduced from the curing agent color changing valve group (the curing agent color changing valve group is discharged after color changing cleaning); the control valve of the curing agent passage is cut off and keeps the closed state; the first cleaning agent valve supplies gas to be opened for about 0.2s, the first cleaning agent valve is opened for 0.5s, the first cleaning agent valve stops supplying gas for about 0.2s, and the first cleaning agent valve is closed for 0.5 s; the first cleaning agent valve supplies gas to be opened for about 0.2s, the first cleaning agent valve is opened for 0.5s, the first cleaning agent valve stops supplying gas, and the closing time is about 0.2 s; keeping the first cleaning agent valve in a gas-off state;
a main agent: the spraying valve is kept in an open state; the waste liquid valve supplies air and keeps the opening state of the waste liquid valve, (the main agent changes color and cleans the waste by discharging), and the cleaning agent and the air are alternately cleaned by the main agent changing color; the waste liquid valve is cut off and the closed state is kept; opening a control valve of the main agent passage, keeping the opening state of the control valve, and introducing a cleaning agent and air for alternate cleaning by color changing of the main agent; the control valve of the main agent passage is cut off and keeps the closed state; the second cleaning agent valve supplies gas to be opened for about 0.2s, the second cleaning agent valve is opened for 0.5s, the second cleaning agent valve cuts off the gas, and the closing time is about 0.2 s; the cleaning air valve supplies air and is opened for about 0.2s, the cleaning air valve is opened for 0.5s, the cleaning air valve is cut off for about 0.2 s; alternating for 4 times; the cleaning air valve and the second cleaning agent valve are both kept in a closed state after being cut off;
the control valve of the curing agent passage supplies gas, keeps the opening state of the curing agent passage, and fills the curing agent; the control valve of the curing agent passage is cut off and keeps the closed state;
the control valve of the main agent passage supplies gas, keeps the opening state of the control valve, and fills the main agent; the control valve of the main agent passage is cut off to keep the closed state.
Closing the spraying valve;
the spraying valve, the control valve of the curing agent passage and the control valve of the main agent passage are opened to start spraying;
after color changing, spraying is not carried out, and a cleaning program of a mixing tube is required to be executed once or a cleaning agent is required to be filled in the last step;
can be determined according to the field condition.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A two-component coating material mixing device, comprising:
a mixing member (1) provided with a main agent passage (2) for conveying a coating material and a curing agent passage (3) for conveying a curing agent; the main agent passage (2) and the curing agent passage (3) are both provided with a feeding end and a discharging end;
one end of the mixing pipe (4) is communicated with the discharge end of the main agent passage (2) and the discharge end of the curing agent passage (3) to form a Y-shaped feeding structure for mixing the coating and the curing agent;
the two control valves (5) are respectively arranged at the discharge end of the main agent passage (2) and the discharge end of the curing agent passage (3); and the on-off of the main agent passage (2), the curing agent passage (3) and the mixing pipe (5) are controlled correspondingly through the on-off of the control valve (5).
2. The two-component coating mixing device of claim 1, further comprising: a cleaning unit provided on the mixing member (1) for cleaning the main agent path (2) or the curing agent path (3).
3. The two-component paint mixing apparatus of claim 2, wherein the cleaning unit comprises:
a first cleaning agent pipeline (6) which is communicated with the curing agent passage (3) and is used for conveying cleaning agent; a first cleaning agent valve (7) which is arranged close to the curing agent passage (3) is arranged on the first cleaning agent pipeline (6) and is used for controlling the connection and disconnection of the first cleaning agent pipeline (6) and the curing agent passage (3);
a second cleaning line (8) which is provided with a cleaning agent delivery line (9) and a cleaning air line (10) that are connected to the main agent passage (2), wherein the cleaning agent delivery line (9) is provided at a distance from the control valve (5) of the main agent passage (2) with respect to the cleaning air line (10);
a second cleaning agent valve (11) which is arranged close to the main agent passage (2) is arranged on the cleaning agent conveying pipeline (9); and a cleaning air valve (12) which is arranged close to the main agent passage (2) is arranged on the cleaning air pipeline (10).
4. A two-component paint mixing device according to claim 3, characterised in that the purge air line (10) is also fitted with an air non-return valve (13) located remotely from the main solvent passage (2).
5. A two-component paint mixing device according to claim 1, characterised in that an oil return (14) is also connected to the main agent passage (2), between the feed end of the main agent passage (2) and the control valve (5) above it, for discharging waste liquid; and a waste liquid valve (15) is arranged on the oil return piece (14).
6. The two-component paint mixing apparatus according to claim 1, wherein the curing agent passage (3) and the main agent passage (2) are respectively provided with an oil feed valve (16) and are disposed near the corresponding feed end side.
7. A two-component paint mixing device according to claim 1, characterised in that the control valve (5) is a one-way valve assembly; the one-way valve assembly includes:
the valve body is of a hollow structure; the valve body is provided with an inlet and an outlet; the inlet is connected with the main agent passage (2) or the part of the curing agent passage (3) far away from the discharge end of the main agent passage; the outlet is connected with the main agent passage (2) or the part of the curing agent passage (3) far away from the discharge end of the main agent passage;
the sealing seat (17) is arranged at the inlet, and a sealing groove is formed in the surface of the sealing seat, which is positioned in the valve body; an opening communicated with the inlet is formed in the sealing seat (17);
a sealing ball (18) arranged inside the hollow structure of the valve body and capable of contacting the sealing seat (17);
the spring (19) is arranged in the hollow structure of the valve body, one end of the spring (19) is connected with the inner wall of the valve body at the outlet, and the other end of the spring (19) is connected with the sealing ball (18);
when the main agent passage (2) or the curing agent passage (3) conveys the coating, the pressure of the coating can push the corresponding sealing ball (18) to move, the sealing ball (18) is separated from the sealing seat (17) and compresses the spring (19), so that the corresponding passage is communicated with the mixing pipe (4), and the coating enters the mixing pipe (4);
when the mixing tube (4) is filled with paint mixture, the pressure of the paint mixture can push the corresponding sealing ball (18) to be pressed against the sealing seat (17), so that the corresponding passage and the mixing tube (4) form an open circuit.
8. A two-component paint mixing apparatus according to claim 7, wherein the sealing groove side wall is provided with a sealing ring (20).
9. A two-component paint mixing device according to claim 1, characterised in that a spray valve is mounted on the mixing tube (4).
10. A cleaning method based on a two-component paint mixing apparatus according to any one of claims 1 to 9, comprising the steps of:
closing the control valves of the main agent passage and the curing agent passage, and opening the spraying valve;
opening the first cleaning agent valve and the second cleaning agent valve in sequence, and keeping the corresponding set time range;
and repeating the steps until the cleaning is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210134454.2A CN114345156A (en) | 2022-02-14 | 2022-02-14 | Bi-component coating mixing device and cleaning method |
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| CN202210134454.2A CN114345156A (en) | 2022-02-14 | 2022-02-14 | Bi-component coating mixing device and cleaning method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193828A (en) * | 2022-06-13 | 2022-10-18 | 中国第一汽车股份有限公司 | Coating workshop spraying equipment curing agent pipeline anti-blocking structure, equipment and method |
| CN115963877A (en) * | 2023-01-10 | 2023-04-14 | 浙江京华激光科技股份有限公司 | Viscosity control system and viscosity control method for coating fluid |
| CN116984156A (en) * | 2023-09-26 | 2023-11-03 | 河南纾宸环保科技有限公司 | Double-component solvent-free paint film spraying equipment and spraying method thereof |
| CN116984155A (en) * | 2023-09-26 | 2023-11-03 | 河南纾宸环保科技有限公司 | Coating mixer of spraying machine |
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