CN112902346A - Ventilation system for inhibiting pollutant dissipation in open paint spraying space - Google Patents
Ventilation system for inhibiting pollutant dissipation in open paint spraying space Download PDFInfo
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- CN112902346A CN112902346A CN202110196919.2A CN202110196919A CN112902346A CN 112902346 A CN112902346 A CN 112902346A CN 202110196919 A CN202110196919 A CN 202110196919A CN 112902346 A CN112902346 A CN 112902346A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention discloses a ventilation system for inhibiting pollutant dissipation in an open paint spraying space, which comprises a mechanical air supply system, an air curtain air supply system, a water tank; the air that flows through the open paint spraying space, the open paint spraying space periphery forms the pollution air current and gets into the purification and separation system in form the separation air current that pollutant concentration is high and the purification air current that pollutant concentration is low among the purification and separation system, the separation air current that pollutant concentration is high forms the stream of airing exhaust through mechanical exhaust system and discharges, and the purification air current that pollutant concentration is low forms the circulation air current by circulation air supply system and sends to mechanical air supply system, air curtain air supply system respectively, new trend air supply system forms the new trend, sends into mechanical air supply system. The invention realizes linkage of ventilation system operation and dynamic change of pollutant concentration in the environment, and reduces the electric energy consumption and air consumption of the ventilation system in the process of paint spraying in an open space.
Description
Technical Field
The invention belongs to the technical field of industrial ventilation, and particularly relates to a ventilation system for inhibiting pollutants in an open paint spraying space from escaping.
Background
Paint spraying is a necessary production link for industrial manufacturing of automobiles, airplanes, ships and the like, and is accompanied with the generation of a large amount of toxic pollutants such as organic gas, paint mist particles and the like. Particularly, when the paint spraying operation link occurs in an open space, accident potential hazards such as worker health safety, factory building fire and explosion prevention and the like caused by toxic pollutant dissipation are increasingly serious. Therefore, the development of the efficient ventilation system for inhibiting the escape of toxic pollutants generated by paint spraying in the open space has great engineering value for ensuring the health and safety of industrial environment and production safety.
Currently, there are very limited literature and patents on ventilation systems that inhibit the escape of contaminants from open paint spaces. Existing ventilation systems are mainly applied to pollutant control and emission in closed painting environments, namely: a fresh air system is arranged in the manned operation link, and a circulating air system is arranged in the unmanned operation link, so that the aims of saving air and reducing energy consumption are fulfilled. However, such ventilation systems are not suitable for ventilating open spaces for painting large workpieces, since the fresh air and circulating air currents will cause free escape of pollutants into the surrounding environment. For this reason, locally isolated coupled mechanical ventilation is currently a more extensive solution to this problem. The scheme is that the surrounding environment of the paint spraying position is physically isolated, and a mechanical ventilation system is operated under the working condition of high air volume, so that pollutants generated in the paint spraying operation are diluted and removed. It should be noted that the pollutants generated by painting are dynamically attenuated in the enclosed space, and if the mechanical ventilation system is operated under the working condition of large air volume, serious air waste and electric energy consumption are caused. In addition, the local space of spraying paint is sealed through setting up physical barrier, has greatly reduced factory building space's utilization ratio and the convenience of the operation of spraying paint.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a ventilation system for suppressing the dissipation of pollutants in an open paint spraying space, which can reasonably match the fresh air volume and the circulating air volume of the ventilation system, link the operation of the ventilation system with the dynamic change of the concentration of pollutants in the environment, and improve the energy efficiency and the practicability of the ventilation system by introducing purified circulating air, and adding a concentration sensor and an air curtain.
In order to achieve the purpose, the technical scheme of the application is as follows: a ventilation system for inhibiting pollutant dissipation in an open paint spraying space comprises a mechanical air supply system, an air curtain air supply system, a purification and separation system, a mechanical exhaust system, a fresh air supply system and a circulating air supply system, wherein the mechanical air supply system generates uniform air flow to act on the open paint spraying space, and the air curtain air supply system generates air curtain jet flow to act on the periphery of the open paint spraying space; the air that flows through the open paint spraying space, the open paint spraying space periphery forms the pollution air current and gets into the purification and separation system form the separation air current that pollutant concentration is high and the purification air current that pollutant concentration is low among the purification and separation system, the separation air current that pollutant concentration is high forms the exhaust stream via mechanical exhaust system and discharges, the purification air current that pollutant concentration is low forms the circulation air current by circulation air supply system and sends to mechanical air supply system, air curtain air supply system respectively, new trend air supply system forms the new trend and flows, sends into mechanical air supply system.
Furthermore, concentration sensors are arranged on the peripheries of the open paint spraying space and the open paint spraying space, the concentration sensors of the open paint spraying space are respectively connected with a mechanical air supply regulating valve of a mechanical air supply system and an electric actuator arranged on an air exhaust regulating valve of a mechanical air exhaust system, and the concentration sensors on the periphery of the open paint spraying space are respectively connected with an air exhaust regulating valve of the mechanical air exhaust system and an electric actuator arranged on an air curtain air supply regulating valve of an air curtain air supply system; the dynamic adjustment of the opening of each valve is realized by an electric actuator.
Furthermore, the mechanical air supply system comprises a mechanical air supply unit and a Soxhlet air supply pipe, and the mechanical air supply unit is connected with the plurality of Soxhlet air supply pipes.
Furthermore, the air curtain air supply system comprises an air curtain air supply unit connected with an air curtain air supply pipe, the air curtain air supply unit is respectively positioned at the top of the periphery of the opened paint spraying space, and an air inlet section of the air curtain air supply pipe is provided with an air curtain air supply regulating valve provided with an electric actuator.
Further, the purification and separation system comprises an air purification unit and a purified air supply pipe which are connected, and an air volume adjusting valve provided with an electric actuator is arranged on the purified air supply pipe.
Furthermore, the mechanical exhaust system comprises an exhaust fan, a main exhaust pipe and an outdoor exhaust pipe, the outdoor exhaust pipe is connected with the exhaust fan, the exhaust fan and the main exhaust pipe are connected with the air purification unit, and an exhaust adjusting valve provided with an electric actuator is arranged on the outdoor exhaust pipe.
Furthermore, the fresh air supply system comprises a fresh air unit and a fresh air pipe which are connected, the fresh air unit is connected with the mechanical air supply unit through an air supply pipeline, and a mechanical air supply adjusting valve provided with an electric actuator is arranged on the air supply pipeline.
Furthermore, circulated air supply system includes circulated air supply pipe I and circulated air supply pipe II that link to each other with circulated air supply unit, circulated air supply pipe I links to each other with mechanical air supply unit, circulated air supply pipe II links to each other with the air curtain blast pipe, circulated air supply unit links to each other with the air supply pipe that purifies.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects: the barrier-free air interlayer generated by the air curtain inhibits the escape of pollutants generated by paint spraying in the open space, and the utilization rate of the workshop space and the convenience of paint spraying operation are ensured; by introducing purified circulating air and additionally arranging a concentration sensor, the linkage of the operation of the ventilation system and the dynamic change of the concentration of pollutants in the environment is realized, and the electric energy consumption and the air consumption of the ventilation system in the paint spraying process of an open space are reduced. Finally, the effect of improving the energy efficiency and the practicability of the ventilation system is achieved.
Drawings
FIG. 1 is a schematic diagram of the operation of a ventilation system for inhibiting the escape of contaminants from an open paint spray space;
FIG. 2 is a schematic view of the overall structure of a ventilation system for suppressing the escape of contaminants from an open paint space;
FIG. 3 is a schematic view of the spatial position of a target painted workpiece;
FIG. 4 is a schematic view of a connection structure between a mechanical blower system and other systems;
FIG. 5 is a schematic view of the connection structure between the air curtain blowing system and other systems;
FIG. 6 is a graph of the effect of controlling ventilation system air flow on contaminant dissipation based on sensory feedback;
FIG. 7 is a diagram showing the distribution of pollutants in the periphery of an open painting space and an open painting space under the condition of critical air volume ratio.
The sequence numbers in the figures illustrate: 1. a mechanical air supply system; 1a, a mechanical air supply unit; 1b, a Soxhlet blast pipe; 2. an air curtain air supply system; 2a, an air curtain air supply unit; 2b, an air curtain blast pipe; 3. A purification and separation system; 3a, an air purification unit; 3b, a purified air blast pipe; 4. a mechanical exhaust system; 4a, an exhaust fan; 4b, a main exhaust pipe; 4c, an outdoor exhaust pipe; 5. a fresh air supply system; 5a, a fresh air unit; 5b, a fresh air pipe; 6. a circulating air supply system; 6a, a circulating air blower unit; 6b, a circulating air blast pipe I; 6c, a circulating air blast pipe II; 7. wind flow is uniform; 8. air curtain jet flow; 9. polluting the wind flow; 10. separating the air flow; 11. exhausting air flow; 12. purifying the air flow; 13. circulating air flow a; 14. circulating air flow b; 15. fresh air flow; 16. sensing feedback a; 17. sensing feedback b; 18. sensing feedback c; 19. sensing feedback d; 20. exhausting air of the system; 21. opening a paint spraying space; 22. opening the periphery of the paint spraying space; 23. target painted workpieces; 24. a mechanical air outlet; 25. an air volume adjusting valve; 26. a unit support; 27. a concentration sensor.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1-5, the present embodiment provides a ventilation system for inhibiting pollutant dissipation in an open paint spraying space, which includes a mechanical air supply system, an air curtain air supply system, a purification and separation system, a mechanical air exhaust system, a fresh air supply system and a circulating air supply system, wherein the mechanical air supply system includes a mechanical air supply unit and a sos air supply pipe, and the mechanical air supply unit is connected with a plurality of sos air supply pipes; the air curtain air supply system comprises an air curtain air supply unit connected with an air curtain air supply pipe, the air curtain air supply unit is respectively positioned at the top of the periphery of the opened paint spraying space, and an air curtain air supply adjusting valve is arranged at an air inlet section of the air curtain air supply pipe. The purification and separation system comprises an air purification unit and a purified air supply pipe which are connected. The mechanical exhaust system comprises an exhaust fan, a main exhaust pipe and an outdoor exhaust pipe, the outdoor exhaust pipe is connected with the exhaust fan, the exhaust fan and the main exhaust pipe are connected with the air purification unit, and an exhaust adjusting valve is arranged on the outdoor exhaust pipe. The fresh air supply system comprises a fresh air unit and a fresh air pipe which are connected, the fresh air unit is connected with the mechanical air supply unit through an air supply pipeline, and a mechanical air supply adjusting valve is arranged on the air supply pipeline. The circulating air supply system comprises a circulating air supply pipe I and a circulating air supply pipe II which are connected with a circulating air supply unit, the circulating air supply pipe I is connected with a mechanical air supply unit, the circulating air supply pipe II is connected with an air curtain supply pipe, and the circulating air supply unit is connected with a purified air supply pipe. Each unit is fixedly installed through a unit support.
Concentration sensors are arranged on the peripheries of the open paint spraying space and the open paint spraying space, the concentration sensors of the open paint spraying space are respectively connected with a mechanical air supply regulating valve of a mechanical air supply system and an electric actuator configured on an air exhaust regulating valve of a mechanical air exhaust system, and the concentration sensors on the periphery of the open paint spraying space are respectively connected with an air exhaust regulating valve of the mechanical air exhaust system and an electric actuator configured on an air curtain air supply regulating valve of an air curtain air supply system; the dynamic adjustment of the opening of each valve is realized by an electric actuator. The concentration sensor is preferably a semiconductor type concentration sensor, and other types may be selected as necessary. The electric actuator is preferably an intelligent electric actuator, and other types of electric actuators can be selected according to requirements.
Placing a target paint spraying workpiece 23 on a workbench, wherein a mechanical air outlet 24 is arranged below the workbench, and the periphery of the workbench is an open paint spraying space; the air curtain is a barrier-free heat-insulating and dust-isolating device, and utilizes the produced air interlayer to weaken cross flow of air in the separated environment between interior and exterior, and change the flow direction of polluted air. The air curtain is arranged at the periphery of a uniform airflow coverage area of a target painting workpiece mechanical air supply system in an open space, and pollutants generated by painting are prevented from escaping to the outer space through the barrier-free air interlayer. Meanwhile, based on the sensing feedback of the pollutant concentration inside the open paint spraying space and outside the open paint spraying space, the running air volume of the mechanical air supply system, the air curtain air supply system and the mechanical air exhaust system is controlled, so that the influence of the coherent action of jet flow at the air curtain outlet and environmental airflow on pollutant dissipation is improved, and the energy consumption of a ventilation system is reduced.
The working process of the ventilation system comprises the following steps:
firstly, the mechanical air supply system 1 generates uniform air flow 7 to act on an open paint spraying space 21, and the air curtain air supply system 2 generates air curtain jet flow 8 to act on the periphery 22 of the open paint spraying space, so that the requirements of ventilation and pollution discharge in the open paint spraying space and the inhibition of free dissipation of pollutants are met;
secondly, forming a polluted air flow 9 by the air flowing through the open paint spraying space 21 and the periphery 22 of the open paint spraying space, and forming a separated air flow 10 with higher pollutant concentration and a purified air flow 12 with extremely low pollutant concentration by the treatment of the purification and separation system 3;
then, for the separated wind flow 10 having a high contaminant concentration, a wind discharge flow 11 is formed via the mechanical wind discharge system 4, thereby completing the system wind discharge 20. For the purified air flow 12 with extremely low pollutant concentration, a circulating air flow a13 and a circulating air flow b14 are formed by the circulating air supply system 6 and are respectively supplied to the mechanical air supply system 1 and the air curtain air supply system 2;
finally, the fresh air required by the painting operation personnel is formed into a fresh air flow 15 by the fresh air supply system 5 and is sent into the mechanical air supply system 1.
As can be seen from fig. 1, in the open painting space 21 and the periphery 22 of the open painting space, the dynamic change of the pollutant concentration is fed back to the mechanical air supply system 1, the mechanical air exhaust system 4, the air curtain air supply system 2 and the mechanical air exhaust system 4 through the sensing feedback a16, the sensing feedback b17, the sensing feedback c18 and the sensing feedback d19 respectively, and the air volume is adjusted through the adjusting valves with electric actuators arranged at corresponding positions, so that the ventilation system is enabled to operate at low energy consumption and high efficiency.
In order to confirm the effectiveness of the ventilation system for inhibiting the pollutant emission in the open painting space, fig. 6 and 7 show the pollutant emission ratio (i.e. the ratio of the pollutant quantity in the air curtain to the pollutant quantity in the whole space) in the process of paint spraying in a certain open space, the change of the ratio of the air supply quantity of the ventilation system (i.e. the sum of the air quantities of the mechanical air supply system 1 and the air curtain air supply system 2) to the air discharge quantity of the system (i.e. the air quantity of the mechanical air exhaust system 4) and the spatial distribution of the pollutant under the condition of the critical air quantity ratio, respectively. As can be seen from FIG. 6, the escape rate of pollutants increases with the increase of the ratio of the air supply volume of the ventilation system to the air exhaust volume of the system, and the escape of pollutants is the most serious under the condition of reaching the critical air volume ratio. At this time, the pollutants are distributed in high concentration in the whole environmental space, and the dissipation is serious, as shown in fig. 7. Therefore, the invention utilizes the air curtain to inhibit the escape of pollutants, and controls the running air volume of the mechanical air supply system 1, the air curtain air supply system 2 and the mechanical air exhaust system 4 based on the sensing feedback, thereby effectively improving the energy efficiency and the practicability of the whole ventilation system.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. A ventilation system for inhibiting pollutant loss in an open paint spraying space is characterized by comprising a mechanical air supply system, an air curtain air supply system, a purification and separation system, a mechanical air exhaust system, a fresh air supply system and a circulating air supply system, wherein the mechanical air supply system generates uniform air flow to act on the open paint spraying space, and the air curtain air supply system generates air curtain jet flow to act on the periphery of the open paint spraying space; the air that flows through the open paint spraying space, the open paint spraying space periphery forms the pollution air current and gets into the purification and separation system form the separation air current that pollutant concentration is high and the purification air current that pollutant concentration is low among the purification and separation system, the separation air current that pollutant concentration is high forms the exhaust stream via mechanical exhaust system and discharges, the purification air current that pollutant concentration is low forms the circulation air current by circulation air supply system and sends to mechanical air supply system, air curtain air supply system respectively, new trend air supply system forms the new trend and flows, sends into mechanical air supply system.
2. The ventilation system of claim 1, wherein concentration sensors are disposed at the peripheries of the open painting space and the open painting space, the concentration sensors at the periphery of the open painting space are respectively connected with the mechanical air supply regulating valve of the mechanical air supply system and the electric actuator disposed on the air exhaust regulating valve of the mechanical air exhaust system, and the concentration sensors at the periphery of the open painting space are respectively connected with the air exhaust regulating valve of the mechanical air exhaust system and the electric actuator disposed on the air curtain air supply regulating valve of the air curtain air supply system; the dynamic adjustment of the opening of each valve is realized by an electric actuator.
3. A ventilation system for inhibiting the escape of contaminants from an open paint spray space as claimed in claim 1 wherein said mechanical air supply system comprises a mechanical air supply unit and a sos air supply duct, said mechanical air supply unit being connected to a plurality of sos air supply ducts.
4. The ventilation system as claimed in claim 1, wherein the air curtain blowing system comprises air curtain blowing units connected to air curtain blowing pipes, the air curtain blowing units are respectively located at the top of the periphery of the open paint space, and an air curtain blowing regulating valve equipped with an electric actuator is arranged at the air inlet section of the air curtain blowing pipes.
5. A ventilating system for suppressing the escape of contaminants in an open painting space as set forth in claim 1, wherein said cleaning and separating system comprises an air cleaning unit and a cleaning air supply pipe connected to each other, and an air volume adjusting valve provided with an electric actuator is provided on said cleaning air supply pipe.
6. The ventilation system of claim 1, wherein the mechanical exhaust system comprises an exhaust fan, a main exhaust duct and an outdoor exhaust duct, the outdoor exhaust duct is connected with the exhaust fan, the exhaust fan and the main exhaust duct are connected with the air purification unit, and an exhaust adjusting valve provided with an electric actuator is arranged on the outdoor exhaust duct.
7. The ventilation system for inhibiting pollutant escape from open paint spraying space according to claim 1, wherein the fresh air supply system comprises a fresh air unit and a fresh air pipe which are connected, the fresh air unit is connected with the mechanical air supply unit through an air supply pipeline, and a mechanical air supply regulating valve provided with an electric actuator is arranged on the air supply pipeline.
8. A ventilating system for suppressing the escape of pollutants from an open painting space as defined in claim 1, wherein said circulating air blowing system comprises a circulating air blowing pipe i and a circulating air blowing pipe ii connected to a circulating air blowing unit, said circulating air blowing pipe i being connected to a mechanical blowing unit, said circulating air blowing pipe ii being connected to an air curtain blowing pipe, said circulating air blowing unit being connected to a clean air blowing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110196919.2A CN112902346B (en) | 2021-02-22 | 2021-02-22 | Ventilation system for inhibiting pollutant dissipation in open paint spraying space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110196919.2A CN112902346B (en) | 2021-02-22 | 2021-02-22 | Ventilation system for inhibiting pollutant dissipation in open paint spraying space |
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| CN112902346A true CN112902346A (en) | 2021-06-04 |
| CN112902346B CN112902346B (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN209452152U (en) * | 2018-12-29 | 2019-10-01 | 广东博硕涂装技术有限公司 | The environmental control system of paint spraying machine reciprocating drive mechanism |
| CN210846906U (en) * | 2019-07-05 | 2020-06-26 | 佛山市百盛荣金属制品有限公司 | Water curtain paint spraying room |
| CN211726330U (en) * | 2020-01-22 | 2020-10-23 | 中宇重科(北京)科技发展有限公司 | Spraying and drying integrated room |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060164825A1 (en) * | 2003-09-26 | 2006-07-27 | Pippa Carlos F | Spray booth |
| CN206325768U (en) * | 2016-12-23 | 2017-07-14 | 吉林省天大精益智能制造技术有限公司 | Cascade paint spray booth |
| CN109317346A (en) * | 2018-01-16 | 2019-02-12 | 苏州艾尔科机电工程有限公司 | A kind of New-air purifying system between spraying |
| CN208194758U (en) * | 2018-03-28 | 2018-12-07 | 湖南启邦环保科技有限公司 | A kind of water paint electrostatic treatment automatic paint-spraying booth |
| CN108592289A (en) * | 2018-04-17 | 2018-09-28 | 深圳市朗奥洁净科技股份有限公司 | Toilet's intelligence control system |
| CN209452152U (en) * | 2018-12-29 | 2019-10-01 | 广东博硕涂装技术有限公司 | The environmental control system of paint spraying machine reciprocating drive mechanism |
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| CN211726330U (en) * | 2020-01-22 | 2020-10-23 | 中宇重科(北京)科技发展有限公司 | Spraying and drying integrated room |
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| CN112902346B (en) | 2022-04-08 |
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