CN220531944U - Supercritical carbon dioxide spraying system - Google Patents
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- CN220531944U CN220531944U CN202322186688.4U CN202322186688U CN220531944U CN 220531944 U CN220531944 U CN 220531944U CN 202322186688 U CN202322186688 U CN 202322186688U CN 220531944 U CN220531944 U CN 220531944U
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 260
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 130
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 130
- 238000005507 spraying Methods 0.000 title claims abstract description 97
- 239000003973 paint Substances 0.000 claims abstract description 133
- 238000002156 mixing Methods 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000007921 spray Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 23
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
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Abstract
The utility model relates to a supercritical carbon dioxide spraying system which at least comprises a coating mixing unit and a spraying operation unit. The paint mixing unit at least comprises a movable working platform, a carbon dioxide gas tank, a plurality of paint component cavities and a paint mixing device, and the paint mixing device at least comprises a carbon dioxide buffer container, a multi-stage mixing container with a heating function and a paint buffer container. The spraying operation unit at least comprises a movable slide rail, a movable slide table, a multi-degree-of-freedom operation mechanical arm and an operation spray gun, wherein the operation spray gun is communicated with the coating buffer container through a high-pressure hose with a heating function. The system can heat the carbon dioxide to a supercritical state under pressure and mix and mutually dissolve with a plurality of coating components, can realize flexible operation of spraying work, improves the spraying efficiency and quality, ensures the stability and safety of the temperature and the pressure of the system, and reduces pollution and harm to the environment and human health.
Description
Technical Field
The utility model belongs to the field of spraying, relates to a spraying system, in particular to a supercritical carbon dioxide spraying system which can heat carbon dioxide to a supercritical state under pressure and mix with a plurality of coating components to be mutually dissolved, can realize flexible operation of spraying work and improves the spraying efficiency and quality.
Background
The paint coating has various functions of protection, decoration, identification and the like, and is widely applied to various fields of airplanes, automobiles, ships, machinery, buildings and the like. However, the conventional spraying modes such as air spraying, high-pressure airless spraying, electrostatic spraying, heating spraying and the like basically require the addition of organic solvents to dilute the paint, wherein the organic solvents consist of various chronic Volatile Substances (VOCs) such as hydrocarbons (benzene, toluene, xylene, gasoline and the like), alcohols, ethers and the like, and the chronic volatile substances make the coating dry at a low speed, are generally toxic and carcinogenic, and influence the physical and psychological health of workers. In order to reduce the emission and harm of VOCs, various measures such as using paint with low content of VOCs, installing an exhaust system and a filtering device, and wearing protective clothing and a mask by constructors are needed in the traditional spraying mode, so that the cost and complexity of spraying are increased, the influence of VOCs cannot be completely eliminated, and the spraying device is inconvenient to operate and low in efficiency.
In view of the above drawbacks, it has been proposed to use supercritical carbon dioxide (SC-CO 2 ) The supercritical carbon dioxide is a fluid state which is converted from a gaseous state or a liquid state into a special physical property such as high density, low viscosity, low surface tension, high diffusion coefficient and the like under a certain temperature and pressure. Supercritical carbon dioxide has the following advantages: (1) The solvent is nontoxic, nonflammable, recyclable, free of VOCs emission, and environment-friendly; (2) Has good dissolving capacity and selectivity, and can be used for preparing the catalyst,can be mixed and mutually dissolved with various coating components, and the solubility and viscosity can be changed by adjusting the temperature and the pressure; (3) The method has the benefit of carbon synergistic emission reduction, and can utilize carbon dioxide in industrial waste gas as a raw material to reduce the emission of greenhouse gases. The novel spraying process for replacing the organic solvent by using the supercritical carbon dioxide mainly comprises the following steps of: (1) pressurizing and heating carbon dioxide to a supercritical state; (2) Mixing supercritical carbon dioxide with the coating components to dissolve each other to form a dissolved coating; (3) Delivering the dissolved coating to a spray gun through a high pressure hose; (4) aiming the spray gun at the area to be sprayed for spraying; (5) After contacting the sprayed dissolved paint with ambient air, the carbon dioxide evaporates rapidly to form a uniform and compact coating. The process can realize high-efficiency, low-pollution and low-cost spraying, improves the spraying efficiency and quality, and ensures the safety and health of spraying personnel.
However, the new spray coating process using supercritical carbon dioxide instead of organic solvents still has some problems and disadvantages, mainly expressed in the following aspects: (1) The equipment is complex, multiple equipment such as a high-pressure pump, a heater, a mixer, a buffer and the like are needed, the occupied space is large, and the maintenance cost is high; (2) The process flow is long, spraying can be completed through a plurality of steps, the time consumption is long, and the efficiency is low; (3) The whole manual participation is needed, the operation is inconvenient, the precision is not high, and the like. In view of the above, although the existing new spraying technology using supercritical carbon dioxide to replace organic solvents has certain advantages, there are still some problems and disadvantages, and improvements and perfection are needed.
Disclosure of Invention
Object of the utility model
In order to overcome the defects and shortcomings in the prior art, the utility model provides a supercritical carbon dioxide spraying system, which realizes high-efficiency mixing of carbon dioxide and paint and flexible operation of spraying work by arranging a multistage mixing container with a heating function and a paint buffer container in a paint mixing unit, and improves the spraying efficiency and quality. The system is capable of pressurizing and heating carbon dioxide to supercritical state and mixing with several coating components to form a dissolved coating. The system can also adjust the proportion, flow, temperature and pressure of the paint components according to the data monitored in real time, so that the dissolved paint is maintained in a stable state in the paint buffer container, and the problem of paint layering or precipitation is avoided. In addition, through setting up multi freedom operation arm and operation spray gun in spraying operation unit, realized the accurate and even spraying to different positions and different structural parts to through using movable operation platform and removal slip table, realized the spraying to different positions and different structural parts, improved spraying efficiency and flexibility. The system can adjust the spraying path and angle according to the shape and the size of the area to be sprayed, and realizes accurate and uniform spraying. The system can also control the dissolved paint to be maintained in a supercritical state in the conveying process, prevent the carbon dioxide from gasifying or condensing and ensure the spraying effect.
(II) technical scheme
In order to solve the technical problems, the utility model adopts the following technical scheme:
a supercritical carbon dioxide spraying system at least comprises a coating mixing unit and a spraying operation unit, and is characterized in that,
the paint mixing unit at least comprises a movable operation platform, at least one carbon dioxide gas tank, a plurality of paint component cavities and a paint mixing device which are fixedly arranged on the movable operation platform, wherein the paint mixing device at least comprises a carbon dioxide buffer container positioned at the upper part of the paint mixing device, a multistage mixing container positioned at the middle part of the paint mixing device and a paint buffer container positioned at the lower part of the paint mixing device, the outer wall of the multistage mixing container is provided with an electric heating wire so as to have a heating function,
the top of the carbon dioxide buffer container is at least provided with a carbon dioxide air inlet, the bottom of the carbon dioxide buffer container is at least provided with a mixed discharge hole, the side wall close to the bottom is provided with a plurality of feed inlets, the top of the multistage mixed container is at least provided with a feed inlet, the bottom of the multistage mixed container is at least provided with a discharge hole, the side wall close to the bottom of the multistage mixed container is at least provided with a feed inlet, the feed inlet at the top of the multistage mixed container is communicated with the mixed discharge hole at the bottom of the carbon dioxide buffer container, the discharge hole at the bottom of the multistage mixed container is communicated with the feed inlet at the top of the coating buffer container,
the outlet of the carbon dioxide gas tank is communicated with the gas inlet at the top of the carbon dioxide buffer container through a gas conveying pipeline, the discharge outlet of each coating component cavity is communicated with the corresponding feed inlet on the carbon dioxide buffer container through a material conveying pipeline, at least one booster pump is arranged on the gas conveying pipeline, and at least one coating pump is arranged on the material conveying pipeline;
the spraying operation unit at least comprises a movable sliding rail, a movable sliding table and a multi-degree-of-freedom operation mechanical arm, wherein the movable sliding table is arranged on the movable sliding rail in a slidable mode, the bottom of the multi-degree-of-freedom operation mechanical arm is fixedly arranged on the movable sliding table, an operation spray gun is arranged at the tail end of the multi-degree-of-freedom operation mechanical arm and is communicated with a discharge hole of the coating cache container through a high-pressure hose, and an electric heating wire is arranged on the outer wall of the high-pressure hose to enable the high-pressure hose to have a heating function.
Preferably, in the paint mixing unit, at least one pneumatic valve i is disposed on a gas transport pipeline between the carbon dioxide tank and the booster pump, at least one carbon dioxide flowmeter is disposed on a gas transport pipeline between the booster pump and the carbon dioxide buffer container, at least one carbon dioxide buffer zone temperature sensor and one carbon dioxide buffer zone pressure sensor extending into the internal space of the carbon dioxide buffer container are disposed on the carbon dioxide buffer container, and at least one paint buffer zone temperature sensor and one paint buffer zone pressure sensor extending into the internal space of the paint buffer container are disposed on the paint buffer container.
Further, the booster pump is a pneumatic booster pump, and the booster pump is also communicated with an air compressor through a pipeline provided with a pneumatic valve II and is driven by high-pressure air generated by the air compressor.
Preferably, in the paint mixing unit, the paint component chambers at least include a first paint component chamber and a second paint component chamber, at least a paint pump i, an electric control valve i, a first paint component flowmeter are disposed on a material conveying pipeline between the first paint component chamber and the carbon dioxide buffer container, and at least a paint pump ii, an electric control valve ii, and a second paint component flowmeter are disposed on a material conveying pipeline between the second paint component chamber and the carbon dioxide buffer container.
Preferably, in the spraying operation unit, an end gripper is provided at an end of the multi-degree-of-freedom operation mechanical arm, and the operation spray gun is gripped by the end gripper.
Preferably, in the spraying operation unit, at least one spray gun temperature sensor and one spray gun pressure sensor extending into the container space are arranged on the operation spray gun.
(III) technical effects
Compared with the prior art, the supercritical carbon dioxide spraying system has the following beneficial and remarkable technical effects:
(1) According to the supercritical carbon dioxide spraying system, the coating pump, the electric regulating valve and the coating component flowmeter are arranged on the material conveying pipeline between the coating component cavity and the carbon dioxide buffer container, so that the pressure and the flow of the coating component can be regulated, the rotating speed of the coating pump can be regulated according to the data monitored in real time, and the coating component and the supercritical carbon dioxide are mixed according to a proper proportion. The utility model also provides a paint buffer zone temperature sensor and a paint buffer zone pressure sensor on the paint buffer container, which can monitor the temperature and pressure of the paint buffer zone, so that the dissolved paint is maintained in a stable state in the paint buffer container, and the problem of layering or precipitation of the paint is avoided.
(2) The supercritical carbon dioxide spraying system can heat the carbon dioxide to a supercritical state under pressure by utilizing the multistage mixing container with a heating function, and is mixed and mutually dissolved with a plurality of coating components to form the dissolved coating, and the multistage mixing mode is adopted to facilitate the full mixing and mutual dissolution of the carbon dioxide and different coating components, so that the steps of premixing, diluting, homogenizing and the like which are needed by using a plurality of reaction kettles or stirring tanks in the traditional spraying are avoided, the process flow is simplified, and the cost is reduced.
(3) According to the supercritical carbon dioxide spraying system, the spraying operation unit can adjust the spraying path and angle according to the shape and the size of an area to be sprayed by adopting the multi-degree-of-freedom operation mechanical arm and the operation spray gun, so that accurate and uniform spraying is realized, and spraying of parts with different positions and different structures can be realized by using the movable operation platform and the movable sliding table, and the functions enable the spraying operation unit to adapt to different spraying requirements and occasions, such as spraying of mechanical equipment and buildings of an airplane, a ship, an automobile and the like, and improve the spraying efficiency and flexibility.
(4) According to the supercritical carbon dioxide spraying system, the temperature and the pressure of each link of the system are regulated according to the detected actual temperature and the detected actual pressure through the temperature and the pressure sensors arranged at a plurality of positions, so that the mixing and the spraying of carbon dioxide and paint are ensured in a supercritical state, the gasification or the condensation of the carbon dioxide is avoided, the spraying effect is ensured, for example, the high-pressure hose with a heating function and the temperature sensor of a spray gun, which are arranged in a spraying operation unit, can control the dissolved paint to be maintained in the supercritical state in the conveying process, the gasification or the condensation of the carbon dioxide is prevented, and the spraying effect is ensured.
Drawings
FIG. 1 is a schematic diagram of a supercritical carbon dioxide spray system in accordance with the present utility model;
FIG. 2 is a schematic diagram showing the structure of a paint mixing unit according to the present utility model;
fig. 3 is a schematic diagram showing the structure of a spraying unit according to the present utility model.
Reference numerals illustrate:
the movable working platform 1, the gas conveying pipeline 2, the booster pump 3, the carbon dioxide flowmeter 4, the paint buffer temperature sensor 5, the multistage mixing container 6, the paint buffer container 7, the paint buffer pressure sensor 8, the hose connector 9, the paint first component cavity 10, the paint second component cavity 11, the high-pressure hose 12 with heating function, the mechanical arm 13, the control line 14, the movable sliding table 15, the air compressor 16, the carbon dioxide gas tank 17, the pneumatic valve I18, the pneumatic valve II 19, the carbon dioxide buffer temperature sensor 20, the carbon dioxide buffer pressure sensor 21, the carbon dioxide buffer container 22, the electric regulating valve I23, the electric regulating valve II 24, the paint first component flowmeter 25, the paint second component flowmeter 26, the spray gun temperature sensor 27, the spray gun pressure sensor 28, the paint pump I29, the paint pump II 30, the spray gun 31, the end holder 32 and the movable sliding rail 33.
Detailed Description
For a better understanding of the present utility model, the following examples are set forth to illustrate the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. The following describes the structure and technical scheme of the present utility model in detail with reference to the accompanying drawings, and an embodiment of the present utility model is given.
As shown in fig. 1, the supercritical carbon dioxide spraying system of the utility model comprises a movable working platform 1, a pipeline 2, a booster pump 3, a carbon dioxide flowmeter 4, a paint buffer zone temperature sensor 5, a multistage mixing container 6, a paint buffer container 7, a paint buffer zone pressure sensor 8, a hose connector 9, a paint first component cavity 10, a paint second component cavity 11, a high-pressure hose 12 with heating function, a mechanical arm 13, a control circuit 14, a movable sliding table 15, an air compressor 16, a carbon dioxide gas tank 17, a pneumatic valve i 18, a pneumatic valve ii 19, a carbon dioxide buffer zone temperature sensor 20, a carbon dioxide buffer zone pressure sensor 21, a carbon dioxide buffer container 22, an electric control valve i 23, an electric control valve ii 24, a paint first component flowmeter 25, a paint second component flowmeter 26, a spray gun temperature sensor 27, a spray gun pressure sensor 28, a paint pump i 29, a paint pump ii 30, a spray gun 31, a tail end holder 32, a movable sliding rail 33 and the like.
More specifically, the whole parts of the supercritical carbon dioxide spraying system of the present utility model can be divided into a coating mixing unit and a spraying operation unit. Wherein:
as shown in fig. 2, the paint mixing unit in the present utility model at least comprises a movable working platform 1, at least one carbon dioxide gas tank 17 fixedly arranged on the movable working platform 1, a plurality of paint component chambers 10 and 11, and a paint mixing device, wherein the paint mixing device at least comprises a carbon dioxide buffer container 22 positioned at the upper part of the paint mixing device, a multi-stage mixing container 6 with a heating function positioned at the middle part of the paint mixing device, and a paint buffer container 7 positioned at the lower part of the paint mixing device, wherein the top of the carbon dioxide buffer container 22 is at least provided with a carbon dioxide gas inlet, the bottom of the carbon dioxide buffer container is at least provided with a mixing discharge port, the side wall close to the bottom is provided with a plurality of feed ports, the top of the multi-stage mixing container 6 is at least provided with a feed port, the side wall close to the bottom is at least provided with a discharge port, and the feed port at the top of the multi-stage mixing container 6 is communicated with the mixing discharge port at the bottom of the carbon dioxide buffer container 22, and the discharge port at the bottom of the multi-stage mixing container 6 is communicated with the feed port at the top of the paint buffer container 7; the outlet of the carbon dioxide gas tank 17 is communicated with the air inlet at the top of the carbon dioxide buffer container 22 through the gas conveying pipeline 2, the discharge outlet of each coating component cavity 10, 11 is communicated with the corresponding feed inlet on the carbon dioxide buffer container 22 through the material conveying pipeline, at least one booster pump 3 is arranged on the gas conveying pipeline 2, and at least one coating pump 29, 30 is arranged on the material conveying pipeline.
In the preferred embodiment of the utility model, at least one pneumatic valve I18 is arranged on the gas conveying pipeline 2 between the carbon dioxide gas tank 17 and the booster pump 3, at least one carbon dioxide flowmeter 4 is arranged on the gas conveying pipeline 2 between the booster pump 3 and the carbon dioxide buffer container 22, the booster pump 3 is a pneumatic booster pump, the booster pump 3 is also communicated with an air compressor 16 through a pipeline provided with a pneumatic valve II 19 and is driven by high-pressure air generated by the air compressor 16, at least one carbon dioxide buffer zone temperature sensor 20 and one carbon dioxide buffer zone pressure sensor 21 extending into the inner space of the carbon dioxide buffer container 22 are arranged on the carbon dioxide buffer container 22, and at least one paint buffer zone temperature sensor 5 and one paint buffer zone pressure sensor 8 extending into the inner space of the paint buffer container 7 are arranged on the paint buffer container 7. The paint component chambers 10 and 11 at least comprise a first paint component chamber 10 and a second paint component chamber 11, at least one paint pump I29, an electric regulating valve I23 and a first paint component flowmeter 25 are arranged on a material conveying pipeline between the first paint component chamber 10 and the carbon dioxide buffer container 22, and at least one paint pump II 30, an electric regulating valve II 24 and a second paint component flowmeter 26 are arranged on a material conveying pipeline between the second paint component chamber 11 and the carbon dioxide buffer container 22.
As shown in fig. 3, the spraying operation unit in the present utility model at least includes a moving slide rail 33, a moving slide table 15, and a multi-degree-of-freedom operation mechanical arm 13, wherein the moving slide table 15 is slidably disposed on the moving slide rail 33, the bottom of the multi-degree-of-freedom operation mechanical arm 13 is fixedly disposed on the moving slide table 15, the end of the multi-degree-of-freedom operation mechanical arm 13 is provided with an operation spray gun 31, and the operation spray gun 31 is communicated with the discharge port of the coating buffer container 7 through a high-pressure hose 12 with a heating function. Preferably, the end of the multi-degree of freedom working robot arm 13 is provided with an end gripper 32 and the working gun 31 is gripped by the end gripper 32. The working lance 31 is provided with at least one lance temperature sensor 27 and one lance pressure sensor 28 extending into the vessel space thereof.
The working principle of the supercritical carbon dioxide spraying system of the utility model is as follows:
after the spraying operation is started, firstly, the air compressor 16 is started, then the pneumatic valve I18 and the booster pump 3 are started, gaseous carbon dioxide is pumped out from the carbon dioxide gas tank 17 and is pressurized and sent to the carbon dioxide buffer container 22, the carbon dioxide buffer zone temperature sensor 20, the carbon dioxide buffer zone pressure sensor 21 and the carbon dioxide flowmeter 4 monitor the temperature, the pressure and the flow of the carbon dioxide in real time, and the carbon dioxide is heated at the multistage mixing container 6 with a heating function and reaches a supercritical state 31.26 ℃ and more than 72.9 atm.
Then the electric regulating valve I23 and the electric regulating valve II 24 are opened, the paint pump I29 and the paint pump II 30 are started to extract the first and second component paint from the first component paint cavity 10 and the second component paint cavity 11, the first component paint flow meter 25 and the second component paint flow meter 26 monitor the flow rates of the first and second component paint respectively, and the rotation speeds of the paint pump I29 and the paint pump II 30 are regulated in real time so as to properly proportion the amounts of the first and second components of the paint; the first and second component paint are mixed and mutually dissolved with supercritical carbon dioxide in a multistage mixing zone 6 with a heating function, and are buffered in a paint buffer zone 7 to reach a stable state.
The dissolved paint reaches the working spray gun 31 through the hose connector 9 and the high-pressure hose 12 with the heating function, the spray gun temperature sensor 27 and the spray gun pressure sensor 28 monitor the temperature and the pressure in the working spray gun 31 in real time, and the carbon dioxide is continuously maintained in a supercritical state by controlling the temperature of the high-pressure hose 12 with the heating function, so that the working spray gun 31 is clamped by the tail end clamp 32 and the spraying action is completed according to the working path of the multi-degree-of-freedom working mechanical arm 13. The spraying system is placed on the movable working platform 1, the multi-degree-of-freedom working robot arm 13 is placed on the movable sliding rail 33 through the movable sliding table 15, and the movable working platform 1 and the movable sliding table 15 can be driven according to the region to be sprayed, so that spraying of parts with different positions and different structures can be realized.
The embodiment only describes the two-component paint, and the component cavity, the paint pump, the paint flowmeter, the electric regulating valve and other components can be added or reduced appropriately according to the component quantity of the paint, so that the component quantity of the paint is equal to the component quantity of the component cavity, the paint pump, the paint flowmeter, the electric regulating valve and other components.
According to the supercritical carbon dioxide spraying system, the coating pump, the electric regulating valve and the coating component flowmeter are arranged on the material conveying pipeline between the coating component cavity and the carbon dioxide buffer container, so that the pressure and the flow of the coating component can be regulated, the rotating speed of the coating pump can be regulated according to the data monitored in real time, and the coating component and the supercritical carbon dioxide are mixed according to a proper proportion. The utility model also provides a paint buffer zone temperature sensor and a paint buffer zone pressure sensor on the paint buffer container, which can monitor the temperature and pressure of the paint buffer zone, so that the dissolved paint is maintained in a stable state in the paint buffer container, and the problem of layering or precipitation of the paint is avoided.
The supercritical carbon dioxide spraying system can heat the carbon dioxide to a supercritical state under pressure by utilizing the multistage mixing container with a heating function, and is mixed and mutually dissolved with a plurality of coating components to form the dissolved coating, and the multistage mixing mode is adopted to facilitate the full mixing and mutual dissolution of the carbon dioxide and different coating components, so that the steps of premixing, diluting, homogenizing and the like which are needed by using a plurality of reaction kettles or stirring tanks in the traditional spraying are avoided, the process flow is simplified, and the cost is reduced.
According to the supercritical carbon dioxide spraying system, the spraying operation unit can adjust the spraying path and angle according to the shape and the size of an area to be sprayed by adopting the multi-degree-of-freedom operation mechanical arm and the operation spray gun, so that accurate and uniform spraying is realized, and spraying of parts with different positions and different structures can be realized by using the movable operation platform and the movable sliding table, and the functions enable the spraying operation unit to adapt to different spraying requirements and occasions, such as spraying of mechanical equipment and buildings of an airplane, a ship, an automobile and the like, and improve the spraying efficiency and flexibility.
According to the supercritical carbon dioxide spraying system, the temperature and the pressure of each link of the system are regulated according to the detected actual temperature and the detected actual pressure through the temperature and the pressure sensors arranged at a plurality of positions, so that the mixing and the spraying of carbon dioxide and paint are ensured in a supercritical state, the gasification or the condensation of the carbon dioxide is avoided, the spraying effect is ensured, for example, the high-pressure hose with a heating function and the temperature sensor of a spray gun, which are arranged in a spraying operation unit, can control the dissolved paint to be maintained in the supercritical state in the conveying process, the gasification or the condensation of the carbon dioxide is prevented, and the spraying effect is ensured.
The object of the present utility model is fully effectively achieved by the above-described embodiments. Those skilled in the art will appreciate that the present utility model includes, but is not limited to, those illustrated in the drawings and described in the foregoing detailed description. While the utility model has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the utility model is not limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.
Claims (6)
1. A supercritical carbon dioxide spraying system at least comprises a coating mixing unit and a spraying operation unit, and is characterized in that,
the paint mixing unit at least comprises a movable operation platform, at least one carbon dioxide gas tank, a plurality of paint component cavities and a paint mixing device which are fixedly arranged on the movable operation platform, wherein the paint mixing device at least comprises a carbon dioxide buffer container positioned at the upper part of the paint mixing device, a multistage mixing container with a heating function positioned at the middle part of the paint mixing device and a paint buffer container positioned at the lower part of the paint mixing device,
the top of the carbon dioxide buffer container is at least provided with a carbon dioxide air inlet, the bottom of the carbon dioxide buffer container is at least provided with a mixed discharge hole, the side wall close to the bottom is provided with a plurality of feed inlets, the top of the multistage mixed container is at least provided with a feed inlet, the bottom of the multistage mixed container is at least provided with a discharge hole, the side wall close to the bottom of the multistage mixed container is at least provided with a feed inlet, the feed inlet at the top of the multistage mixed container is communicated with the mixed discharge hole at the bottom of the carbon dioxide buffer container, the discharge hole at the bottom of the multistage mixed container is communicated with the feed inlet at the top of the coating buffer container,
the outlet of the carbon dioxide gas tank is communicated with the gas inlet at the top of the carbon dioxide buffer container through a gas conveying pipeline, the discharge outlet of each coating component cavity is communicated with the corresponding feed inlet on the carbon dioxide buffer container through a material conveying pipeline, at least one booster pump is arranged on the gas conveying pipeline, and at least one coating pump is arranged on the material conveying pipeline;
the spraying operation unit at least comprises a movable sliding rail, a movable sliding table and a multi-degree-of-freedom operation mechanical arm, wherein the movable sliding table is arranged on the movable sliding rail in a slidable mode, the bottom of the multi-degree-of-freedom operation mechanical arm is fixedly arranged on the movable sliding table, an operation spray gun is arranged at the tail end of the multi-degree-of-freedom operation mechanical arm, and the operation spray gun is communicated with a discharge port of the coating cache container through a high-pressure hose with a heating function.
2. The supercritical carbon dioxide spraying system according to claim 1, wherein in the paint mixing unit, at least one pneumatic valve i is disposed on a gas conveying pipeline between the carbon dioxide tank and the booster pump, at least one carbon dioxide flowmeter is disposed on a gas conveying pipeline between the booster pump and the carbon dioxide buffer container, at least one carbon dioxide buffer temperature sensor and one carbon dioxide buffer pressure sensor extending into the inner space of the carbon dioxide buffer container are disposed on the carbon dioxide buffer container, and at least one paint buffer temperature sensor and one paint buffer pressure sensor extending into the inner space of the paint buffer container are disposed on the paint buffer container.
3. The supercritical carbon dioxide spraying system according to claim 2, wherein the booster pump is a pneumatic booster pump, and the booster pump is further in communication with an air compressor through a pipeline provided with a pneumatic valve ii, and is driven by high-pressure air generated by the air compressor.
4. The supercritical carbon dioxide spraying system according to claim 1, wherein the coating material mixing unit comprises at least a first coating material component chamber and a second coating material component chamber, wherein the material transportation pipeline between the first coating material component chamber and the carbon dioxide buffer container is provided with at least a coating material pump i, an electric control valve i, a first coating material component flowmeter, and the material transportation pipeline between the second coating material component chamber and the carbon dioxide buffer container is provided with at least a coating material pump ii, an electric control valve ii, and a second coating material component flowmeter.
5. The supercritical carbon dioxide spraying system according to claim 1, wherein in the spraying operation unit, an end gripper is provided at an end of the multi-degree-of-freedom operation mechanical arm and the operation spray gun is gripped by the end gripper.
6. The supercritical carbon dioxide spraying system according to claim 1, wherein the spraying operation unit is provided with at least a spray gun temperature sensor and a spray gun pressure sensor extending into the container space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322186688.4U CN220531944U (en) | 2023-08-15 | 2023-08-15 | Supercritical carbon dioxide spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322186688.4U CN220531944U (en) | 2023-08-15 | 2023-08-15 | Supercritical carbon dioxide spraying system |
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| Publication Number | Publication Date |
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| CN220531944U true CN220531944U (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322186688.4U Active CN220531944U (en) | 2023-08-15 | 2023-08-15 | Supercritical carbon dioxide spraying system |
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| Country | Link |
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| CN (1) | CN220531944U (en) |
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