A fresh air system for a surface treatment plant

Abstract

The application discloses a kind of new air system for surface treatment workshop, it is related to new air system technical field, including new air duct, filter, fan, heat exchange coil, cooling water tank, standby hot water tank and water source heat pump.New air duct one end is as air inlet and outside space communication, multiple air outlets are sequentially arranged on it along the length direction, air outlet is used to and workshop internal space communication;Filter is set in new air duct, and located in the upstream duct of air outlet;Fan is set in new air duct, and located in the upstream duct of air outlet, fan is used to drive outside space air from new air duct to workshop;Heat exchange coil is set in new air duct, and located in the upstream duct of air outlet;Water source heat pump is used to recover the heat in cooling water and then discharge cooling water into cooling water tank;Water source heat pump is also used to recover the heat of electroplating solution in electroplating tank and heat the water in standby hot water tank.The application can reduce energy consumption and improve air quality in workshop.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fresh air system, in particular to a fresh air system for surface treatment workshop. BACKGROUND

[0002] The fresh air system is usually equipped in the surface treatment workshop to provide fresh air, and some fresh air systems are equipped with heat exchangers to cool and heat the fresh air. However, the cold energy or heat energy required by the heat exchanger needs to be prepared in advance by a refrigerating machine or a heating machine, which greatly increases the energy consumption. SUMMARY

[0003] The present application aims to provide a fresh air system for surface treatment workshop to solve the above-mentioned problems of the prior art, reduce energy consumption and improve the air quality in the workshop.

[0004] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0005] The present application provides a fresh air system for surface treatment workshop, comprising a fresh air duct, a filter, a fan, a heat exchange coil, a cooling water tank, a standby hot water tank and a water source heat pump. At least one end of the fresh air duct is connected with the outside space as an air inlet, and a plurality of air outlets are arranged on the fresh air duct along the length direction of the fresh air duct. The air outlets are used to communicate with the inside space of the workshop. The filter is arranged in the fresh air duct and located in the upstream air duct of the air outlets. The fan is arranged in the fresh air duct and located in the upstream air duct of the air outlets. The fan is used to drive the air from the outside space to the inside space of the workshop. The heat exchange coil is arranged in the fresh air duct and located in the upstream air duct of the air outlets. The cooling water tank is connected with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop. The standby hot water tank is connected with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop. The water source heat pump is used to recover the heat of the cooling water and discharge the cooling water into the cooling water tank. The water source heat pump is also used to recover the heat of the electroplating solution in the electroplating tank and heat the water in the standby hot water tank.

[0006] Preferably, the exhaust system is used to extract air from the workshop, and the total amount of gas discharged by the exhaust system is consistent with the total amount of gas delivered by the fan to the workshop.

[0007] Preferably, the water source heat pump is also used to recover the heat in the air in the workshop and discharge the cooling air into the workshop.

[0008] Preferably, the exhaust system has a plurality of air extraction ports, which are arranged on the side wall of the electroplating tank. When the electroplating tank contains electroplating solution, the air extraction ports are located above the liquid level of the electroplating solution in the electroplating tank.

[0009] Preferably, the filter is a coarse filter.

[0010] Preferably, a humidifier is arranged in the fresh air duct, and the humidifier is arranged in the upstream air duct of the air outlet.

[0011] Preferably, the air outlet of the fresh air duct is communicated with an air jet pipe, and the air jet pipe is arranged to extend towards the middle of the workshop.

[0012] Preferably, the fresh air duct and the air jet pipe are made of flame-retardant materials.

[0013] Preferably, the fresh air duct is further communicated with an extension pipe, and the extension pipe is provided with an air jet pipe, and the air jet pipe of the extension pipe extends into the office.

[0014] Preferably, four fresh air ducts are arranged, each of which is provided with a fan, a filter and a heat exchange coil, two of the fresh air ducts are arranged on the top of one side of the workshop, and the other two fresh air ducts are arranged on the top of the other side of the workshop, and the fresh air ducts arranged on the same side are coaxially arranged.

[0015] The present application has the following technical effects relative to the prior art:

[0016] Since the workpiece surface needs to be heated before electroplating, for example, before work in the morning, the present application uses the hot water in the standby hot water tank to exchange heat with the electroplating solution to heat the electroplating solution, and the heat of the hot water in the standby hot water tank comes from the heat recovered from the cooling water by the water source heat pump, and the cooling water after heat recovery is discharged into the cooling water tank for standby, when the temperature in the workshop is high, the cooling water in the cooling water tank can be discharged into the heat exchange coil in the fresh air duct to cool the fresh air. After electroplating is completed, and there is no electroplating task within a few hours, for example, after work in the afternoon, the electroplating solution needs to be cooled to reduce the volatilization of acid-containing and alkali-containing gas, when cooling, the water source heat pump is used to recover the heat of the electroplating solution in the electroplating tank and heat the water in the standby hot water tank, when the temperature in the workshop is low, the hot water in the standby hot water tank can be discharged into the heat exchange coil in the fresh air duct to heat and warm the fresh air, therefore, the scheme provided by the present application does not need to specially set up a refrigerating machine or a heating machine to produce cold energy or heat energy, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without any creative effort.

[0018] Figure 1 The structural schematic diagram of the new air system for the surface treatment workshop provided by the embodiments of the present application is shown in the figure.

[0019] Figure 2 The schematic diagram of the heat energy and cold energy recovery route is shown in the figure.

[0020] In the figure, 1 is a new air duct, 2 is a waste gas discharge system, 3 is an electroplating tank, 4 is an extension pipe, 5 is an office, 6 is a jet pipe, 7 is a water source heat pump, 9 is a cooling water tank, 10 is a standby hot water tank, and 11 is a heat exchange coil. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The embodiments of the present application will be described below with reference to the accompanying drawings. Figure 1 and Figure 2

[0024] ​The application provides a kind of new air system for surface treatment workshop, comprising: new air duct 1, filter, fan, heat exchange coil 11, cooling water tank 9, standby hot water tank 10 and water source heat pump 7.New air duct 1 at least one end as air inlet and outside space communication, it is sequentially provided with a plurality of air outlets on the length direction of itself, air outlet is used to and workshop interior space communication;Filter is arranged in new air duct 1, and is located in the upstream duct of air outlet;Fan is arranged in new air duct 1, and is located in the upstream duct of air outlet, fan is used to drive the air of outside space from new air duct 1 to workshop;Heat exchange coil 11 is arranged in new air duct 1, and is located in the upstream duct of air outlet;Cooling water tank 9 and the two ends of heat exchange coil 11 are communicated to form a loop, and pump is arranged in the loop;Standby hot water tank 10 and the two ends of heat exchange coil 11 are communicated to form a loop, and pump is arranged in the loop;Water source heat pump 7 is used to recover the heat in cooling water and then discharge cooling water into cooling water tank 9;Water source heat pump 7 is also used to recover the heat of electroplating solution in electroplating tank 3 and heat the water in standby hot water tank 10.

[0025] Because in surface treatment workshop, before the workpiece surface is electroplated, for example, before work in the morning, it is necessary to heat the electroplating solution to the required temperature, the application utilizes the hot water in standby hot water tank 10 to exchange heat with the electroplating solution to heat the electroplating solution, and the heat of the hot water in standby hot water tank 10 comes from the heat recovered by water source heat pump 7 from the cooling water, the cooling water after heat recovery is discharged into cooling water tank 9 for standby, when the temperature in the workshop is high, the cooling water in cooling water tank 9 can be discharged into heat exchange coil 11 in new air duct 1 to cool the fresh air.In the electroplating is completed, and in a few hours without electroplating task, for example, after work in the afternoon, it is necessary to cool the electroplating solution to reduce the volatilization of acid-containing and alkali-containing gas, when cooling, water source heat pump 7 is used to recover the heat of electroplating solution in electroplating tank 3 and heat the water in standby hot water tank 10, when the temperature in the workshop is low, the hot water in standby hot water tank 10 can be discharged into heat exchange coil 11 in new air duct 1 to heat the fresh air, therefore, the scheme provided by the application does not need to specially set up refrigerating machine or heating machine to prepare cold energy or heat energy, so the energy consumption is reduced.

[0026] Specifically, water source heat pump 7 has cold channel and hot channel and heat exchange module, heat exchange module is used to "transport" the heat in cold channel to hot channel, hot channel and standby hot water tank 10 form a circulation loop, cooling water tank 9 can form a circulation loop with the cold channel of water source heat pump 7, the cold water inlet of cold channel of water source heat pump 7 is connected to the cooling water in cooling water tank 9, to recover the heat in cooling water, of course, the heat in standby hot water tank 10 is not limited to recover the heat of cooling water in cooling water tank 9, but also can recover the heat of cooling water discharged from refrigerator in anodic oxidation production line.

[0027] In some embodiments, the standby hot water tank 10 is also connected with the heat exchange coil at the bottom of the electroplating tank 3. Before work, the hot water in the standby hot water tank 10 and the heat exchange coil are used to heat the electroplating solution. After the electroplating solution is heated to a certain degree, the high-temperature hot water in other hot water tanks is used to heat the electroplating solution. The hot water in the standby hot water tank 10 still has a certain amount of heat, which is used for the heat exchange coil connected to the fresh air duct to heat the fresh air.

[0028] In some embodiments, the embodiment of the present application further comprises a waste gas exhaust system 2, which is used to exhaust the air in the workshop. The total amount of gas exhausted by the waste gas exhaust system 2 is consistent with the total amount of gas delivered by the fan into the workshop. It can be understood that the consistency here is basically consistent, because it is difficult to keep the intake and exhaust amounts completely consistent in actual application.

[0029] In this embodiment, the air outside the workshop and the air inside the workshop form a gas circulation, which accelerates the replacement efficiency of the air in the workshop, and further improves the efficiency and quality of air purification.

[0030] In some embodiments, the water source heat pump 7 is also used to recover heat from the air in the workshop and then exhaust the cold air into the workshop.

[0031] In this embodiment, when the temperature is high in summer, the water source heat pump 7 is used to recover heat from the air and then exhaust the low-temperature air into the workshop, which accelerates the speed of temperature reduction in the workshop. The heat recovered by the water source heat pump 7 can be used to heat the hot water in the standby hot water tank 10 to increase its temperature.

[0032] In some embodiments, the waste gas exhaust system 2 has a plurality of air suction ports, which are arranged on the side wall of the electroplating tank 3. When the electroplating tank 3 contains electroplating solution, the air suction ports are located above the liquid level of the electroplating solution in the electroplating tank 3.

[0033] In this embodiment, since most of the toxic and harmful gases in the workshop are generated in the electroplating tank 3, the toxic and harmful gases generated in the electroplating tank 3 are extracted as quickly as possible in this embodiment to avoid their large-area diffusion and affect the health of employees.

[0034] In some embodiments, the filter is a coarse efficiency filter.

[0035] This embodiment realizes the primary and medium efficiency filtration of fresh air.

[0036] In some embodiments, a humidifier is also arranged in the fresh air duct 1, and the humidifier is located in the upstream air duct of the air outlet.

[0037] This embodiment realizes the humidification of fresh air to further improve the comfort of employees in the workshop.

[0038] In some embodiments, the air outlet of the fresh air duct 1 is communicated with a jet pipe 6, and the end of the jet pipe 6 away from the air outlet is arranged to extend towards the middle of the workshop.

[0039] This embodiment helps the fresh air to diffuse towards the middle of the workshop.

[0040] In some embodiments, the fresh air duct 1 and the jet pipe 6 are made of flame-retardant materials.

[0041] This embodiment improves the safety of the workshop.

[0042] In some embodiments, the fresh air duct 1 is further communicated with an extension pipe 4, and the extension pipe 4 is provided with a jet pipe 6, and the jet pipe 6 on the extension pipe 4 extends into the office 5.

[0043] This embodiment can replace the air in the offices 5 on both sides, and there is no need to separately arrange air conditioning or other air conditioning equipment in the offices 5.

[0044] In some embodiments, four fresh air ducts 1 are arranged, and each of the fresh air ducts 1 is provided with a fan, a filter and a heat exchange coil 11, two of the fresh air ducts 1 are arranged on the top of one side of the workshop, and the other two fresh air ducts 1 are arranged on the top of the other side of the workshop, and the fresh air ducts 1 arranged on the same side are coaxially arranged.

[0045] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above embodiment descriptions are only used to help understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the field, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present description should not be understood as the limitation of the present application.

Claims

1. A fresh air system for a surface treatment workshop, characterized in that: include: The fresh air duct has at least one end serving as an air inlet connected to the outside space, and multiple air outlets are arranged sequentially along its length, the air outlets being used to connect with the interior space of the workshop. A filter is installed in the fresh air duct and located in the upstream duct of the air outlet; A fan is installed in the fresh air duct and located in the upstream duct of the air outlet. The fan is used to drive air from the outside space into the workshop through the fresh air duct. The heat exchange coil is installed in the fresh air duct and located in the upstream duct of the air outlet; The cooling water tank is connected to both ends of the heat exchange coil to form a loop, and a pump is installed in the loop; A backup hot water tank is connected to both ends of the heat exchange coil to form a loop, and a pump is installed in the loop; A water source heat pump is used to recover heat from cooling water and then discharge the cooling water into the cooling water tank; the water source heat pump is also used to recover heat from the electroplating solution in the electroplating tank and heat the water in the backup hot water tank.

2. The fresh air system for surface treatment workshops according to claim 1, characterized in that: It also includes an exhaust gas emission system, which is used to extract air from the workshop, and the total amount of gas emitted by the exhaust gas emission system is the same as the total amount of gas transported into the workshop by the fan.

3. The fresh air system for surface treatment workshops according to claim 2, characterized in that: The water source heat pump is also used to recover heat from the air in the workshop and then discharge cold air into the workshop.

4. The fresh air system for surface treatment workshops according to claim 2, characterized in that: The exhaust gas system has multiple air extraction ports, which are located on the side wall of the electroplating tank. When the electroplating tank contains electroplating liquid, the air extraction ports are located above the surface of the electroplating liquid in the electroplating tank.

5. The fresh air system for surface treatment workshops according to claim 2, characterized in that: The filter is a coarse filter.

6. The fresh air system for surface treatment workshops according to claim 2, characterized in that: A humidifier is also installed in the fresh air duct, and the humidifier is located in the upstream duct of the air outlet.

7. The fresh air system for surface treatment workshops according to claim 2, characterized in that: The air outlet of the fresh air duct is connected to a jet pipe, and the end of the jet pipe away from the air outlet extends toward the center of the workshop.

8. The fresh air system for surface treatment workshops according to claim 7, characterized in that: Both the fresh air duct and the jet pipe are made of flame-retardant materials.

9. The fresh air system for surface treatment workshops according to claim 7, characterized in that: The fresh air duct is also connected to an extension pipe, which is equipped with an air jet pipe that extends into the office.

10. The fresh air system for surface treatment workshops according to claim 1, characterized in that: Four fresh air ducts are provided, each containing a fan, a filter, and a heat exchange coil. Two of the fresh air ducts are located on the top of one side of the workshop, and the other two are located on the top of the other side of the workshop. The fresh air ducts located on the same side are coaxially arranged.

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