A device for recovering waste heat from electroplating waste gas

Abstract

The utility model discloses a device for recovering residual heat from electroplating waste gas, which relates to the technical field of electroplating waste gas treatment, and comprises a box body, wherein an air inlet pipe is arranged on one side of the box body, an air outlet block is arranged on the other side of the box body, a heat exchange pipe is arranged inside the box body, and both ends of the heat exchange pipe penetrate the box body, thereby improving the problem that the contact time of the water source with the cold water pipe, the hot water pipe and the titanium pipe during the flow is short, the heat cannot be effectively adsorbed, and the waste gas will be directly discharged through the waste gas outlet, the waste gas cannot be effectively filtered, and the impurities in the waste gas will still be blown into the atmosphere. The heat exchange pipe in the device can effectively adsorb the heat contained in the waste gas entering the inside of the box body, so that the temperature of the water source can be slowly increased, and after the water source flows into the inside of the water storage tank through the heat exchange pipe, it can flow back into the inside of the heat exchange pipe through the water pump again, and repeatedly and continuously adsorbs the temperature absorbed by the water storage tank, thereby realizing heat exchange of the heat in the waste gas.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating waste gas treatment, in particular to a device for recovering residual heat from electroplating waste gas. Background Art

[0002] The waste gas from electroplating factories is divided into acidic and alkaline waste gas, and some are even organic solution waste gas. If not recovered and treated in time, it will threaten the human respiratory tract, and in severe cases, it may cause cancer. The existing electroplating waste gas waste heat recovery device is a device used to recover the waste heat in the waste gas generated during the electroplating process. During the electroplating process, not only a large amount of waste gas is generated, but also contains high-temperature flue gas. The working principle of the existing electroplating waste gas waste heat recovery device is to use a heat exchanger to transfer the heat energy in the waste gas to other media to achieve energy recovery.

[0003] For example, the utility model patent with publication number CN204874807U discloses a waste heat recovery device for electroplating waste gas, including a shell, an air chamber, a waste gas inlet, a waste gas outlet, a cold water inlet and a hot water outlet. A heat exchange titanium tube with barbed pieces is provided in the glass fiber reinforced plastic air chamber of the shell, and a hot water pipe and a cold water pipe are provided on both sides of the air chamber. The cold water pipe, the heat exchange titanium tube and the hot water pipe constitute a water flow channel for heat exchange, and a waste gas inlet and a waste gas outlet are provided on both sides of the shell. This recovery device has excellent corrosion resistance and is very suitable for complex and highly corrosive gases such as electroplating liquid waste gas. Electroplating waste gas has great harm to the environment and human body. The utility model solves the energy waste and serious environmental pollution caused by low-temperature waste heat that is difficult to effectively recover in existing equipment, and has significant energy-saving, emission-reduction and consumption-reduction effects.

[0004] Regarding the above scheme, the applicant believes that although the above scheme can achieve the exchange of heat in the exhaust gas through the water source, the above scheme mainly adsorbs the heat through the thorns. The thorns may consume a certain amount of heat when transferring heat. At the same time, the contact time of the water source with the cold water pipe, the hot water pipe and the titanium pipe is relatively short when flowing, and the heat cannot be effectively adsorbed. In addition, the exhaust gas will be directly discharged through the exhaust gas outlet, and the exhaust gas cannot be effectively filtered. Impurities in the exhaust gas will still be blown into the atmosphere. Utility Model Content

[0005] In view of the problems existing in the background technology, the purpose of the utility model is to provide a device for recovering waste heat from electroplating waste gas.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A device for recovering waste heat from electroplating waste gas comprises a box body, an air inlet pipe is provided on one side of the box body, an air outlet block is provided on the other side of the box body, a heat exchange tube is provided inside the box body, both ends of the heat exchange tube pass through the box body, a water storage tank is fixedly connected to the outside of the heat exchange tube, the water storage tank is provided on one side of the box body, a cover plate is provided on the upper side of the water storage tank, a water pump is fixedly connected to one side of the box body, the water pump is provided on the outside of the heat exchange tube, a drain pipe is fixedly connected to the lower side of the water storage tank, and a valve body is provided on the outside of the drain pipe.

[0008] As a preferred solution of the utility model, a slot is provided on the upper side of the water tank, a plug plate is fixedly connected to the lower side of the cover plate, and the plug plate is movably plugged into the inside of the slot.

[0009] As a preferred solution of the utility model, a heat-insulating layer is fixedly connected to the outer side of the water storage tank, and the heat-insulating layer is arranged on the outer side of the heat exchange tube.

[0010] As a preferred solution of the utility model, a hollow titanium tube is arranged inside the box body, and the hollow titanium tube is fixedly connected to the outside of the heat exchange tube.

[0011] As a preferred solution of the utility model, a fixing rod is fixedly connected to the inside of the box body, and the fixing rod is fixedly connected to the outside of the heat exchange tube.

[0012] As a preferred solution of the utility model, a screw and a limiting rod are provided on one side of the air outlet block, an activated carbon plate is provided on the outside of the screw, the activated carbon plate is threadedly connected to the outside of the screw, and the activated carbon plate is slidably connected to the outside of the limiting rod.

[0013] As a preferred solution of the utility model, a reinforcing oblique block is fixedly connected to one side of the box body, the reinforcing oblique block is fixedly connected to the lower side of the water tank, and a pressure display and a temperature sensor display are fixedly connected to the upper side of the cover plate.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. The water pump in this device can circulate the water temporarily stored in the water tank in the heat exchange tube through its own operation. The heat exchange tube can effectively absorb the heat contained in the exhaust gas entering the box body and transfer it to the water flowing inside itself, so that the temperature of the water source can slowly increase. After the water source flows into the water tank through the heat exchange tube, it can flow back into the heat exchange tube again through the water pump, repeatedly and continuously absorb the temperature absorbed by the water tank, thereby realizing heat exchange of the heat in the exhaust gas.

[0016] 2. The heat exchange tube in this device can be connected to the hollow titanium tube, and the hollow titanium tube can play a certain auxiliary role in the heat adsorption of the heat exchange tube, so that the heat exchange tube can be more effective and smooth when adsorbing heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the top-sectional structure of the utility model;

[0020] Figure 4 It is a side structural schematic diagram of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Box body; 21. Air inlet pipe; 22. Air outlet block; 23. Heat exchange tube; 24. Water storage tank; 25. Cover plate; 26. Water pump; 27. Drain pipe; 28. Valve body; 31. Screw; 32. Limit rod; 33. Activated carbon plate; 41. Pressure display; 42. Temperature sensor display; 5. Fixing rod; 6. Hollow titanium tube; 7. Insulation layer; 81. Slot; 82. Insert plate; 9. Reinforcement oblique block. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 A device for recovering waste heat from electroplating waste gas comprises a box body 1, an air inlet pipe 21 is arranged on one side of the box body 1, and an air outlet block 22 is arranged on the other side of the box body 1. The box body 1 can install and fix the air inlet pipe 21 and the air outlet block 22, and the air inlet pipe 21 can be used for external exhaust gas to flow into the interior of the box body 1, and the air outlet block 22 can be used for exhaust gas inside the box body 1 to flow out from the interior of the box body 1. A heat exchange pipe 23 is arranged inside the box body 1, and both ends of the heat exchange pipe 23 pass through the box body 1. A water storage tank 24 is fixedly connected to the outside of the heat exchange pipe 23. The inside of the heat exchange pipe 23 can be used for flowing water source needed for heat exchange. At the same time, the heat exchange pipe 23 is connected to the inside of the water storage tank 24. The inside of the water storage tank 24 can temporarily store the water source used for heat exchange, and the water storage tank 24 is arranged on one side of the box body 1.

[0025] For details, please refer to Figure 2-3 A cover plate 25 is provided on the upper side of the water tank 24, and the cover plate 25 can play a closing role on the water tank 24, which can not only play a certain role in heat preservation, but also effectively reduce the possibility of dust and debris falling into the water tank 24. A water pump 26 is fixedly connected to one side of the box body 1, and the water pump 26 is arranged on the outside of the heat exchange tube 23. The water pump 26 can circulate the water source temporarily stored in the water tank 24 in the heat exchange tube 23 through its own operation, and the heat exchange tube 23 is arranged in the box body 1. The heat exchange tube 23 can effectively adsorb the heat contained in the exhaust gas entering the box body 1, and transfer it to the water source flowing in itself, so that the temperature of the water source can be slowly increased. After the water source flows into the water tank 24 through the heat exchange tube 23, it can flow back into the heat exchange tube 23 through the water pump 26 again, and repeatedly and continuously adsorb the temperature absorbed by the water tank 24, thereby realizing the heat exchange of the heat in the exhaust gas.

[0026] See also Figure 2 A drain pipe 27 is fixedly connected to the lower side of the water tank 24, and a valve body 28 is provided on the outer side of the drain pipe 27. The drain pipe 27 can be used to discharge the water source inside the water tank 24, so that the water source after heat exchange can flow out from the inside of the water tank 24 smoothly, and the valve body 28 can close and open the drain pipe 27, so that when the water source does not need to flow out, the water source inside the water tank 24 is not easy to flow out through the drain pipe 27.

[0027] Specifically, a slot 81 is provided on the upper side of the water tank 24, and a plug plate 82 is fixedly connected to the lower side of the cover plate 25. The plug plate 82 is movably plugged into the inside of the slot 81. The cover plate 25 can install and fix the plug plate 82, and the plugging between the plug plate 82 and the slot 81 can make the connection between the cover plate 25 and the water tank 24 simple and convenient enough.

[0028] In addition, the outer side of the water tank 24 is fixedly connected with an insulation layer 7, and the insulation layer 7 is arranged on the outer side of the heat exchange tube 23. The water tank 24 can effectively fix and install the insulation layer 7, and the insulation layer 7 can play a certain insulation role on the water tank 24, thereby reducing the loss of heat from the water source inside the water tank 24.

[0029] See also Figure 3 A hollow titanium tube 6 is arranged inside the box body 1, and the hollow titanium tube 6 is fixedly connected to the outside of the heat exchange tube 23. The heat exchange tube 23 can be connected to the hollow titanium tube 6, and the hollow titanium tube 6 can play a certain auxiliary role in the heat adsorption of the heat exchange tube 23, so that the heat exchange tube 23 can adsorb heat more effectively and smoothly.

[0030] Specifically, a fixing rod 5 is fixedly connected to the inside of the box body 1, and the fixing rod 5 is fixedly connected to the outside of the heat exchange tube 23. The fixing rod 5 can reinforce and fix the heat exchange tube 23 through the connection between itself and the box body 1, so that the heat exchange tube 23 can be more stable when in use and is not prone to displacement, tilting, etc.

[0031] See also Figure 3-4 A screw 31 and a limiting rod 32 are provided on one side of the gas outlet block 22, and an activated carbon plate 33 is provided on the outer side of the screw 31. The activated carbon plate 33 is threadedly connected to the outer side of the screw 31, and the activated carbon plate 33 is slidably connected to the outer side of the limiting rod 32. The gas outlet block 22 can connect the screw 31 and the limiting rod 32, and the limiting rod 32 can limit the activated carbon plate 33. When the screw 31 is rotating, the screw 31 can limit the activated carbon plate 33 through the limiting rod 32, thereby driving the activated carbon plate 33 to move. After the activated carbon plate 33 is moved to one side of the gas outlet block 22 through the rotation of the screw 31, the activated carbon plate 33 can filter the exhaust gas flowing out from the inside of the gas outlet block 22 to a certain extent, thereby reducing the impurities contained in the discharged exhaust gas.

[0032] In this solution, a reinforcing bevel block 9 is fixedly connected to one side of the box body 1, and the reinforcing bevel block 9 is fixedly connected to the lower side of the water tank 24. The reinforcing bevel block 9 can reinforce the water tank 24 through the connection between itself and the box body 1, so that the water tank 24 is not prone to falling or shaking during use. A pressure display 41 and a temperature sensor display 42 are fixedly connected to the upper side of the cover plate 25. The pressure display 41 can facilitate the staff to detect and observe the pressure inside the water tank 24, while the temperature sensor display 42 can facilitate the staff to observe and detect the temperature of the water source inside the water tank 24, so that when the water source inside the water tank 24 reaches a certain temperature, the staff can discharge and take out the water source through the drain pipe 27 in time.

[0033] Working principle and use process of the utility model: When the device is in use, the staff can add enough water to the inside of the water tank 24, and after the addition is completed, the external exhaust gas is guided to the inside of the box body 1 through the air intake pipe 21, and the staff can start the water pump 26 at the same time. At this time, the water source in the water tank 24 will flow into the inside of the heat exchange tube 23 through the operation of the water pump 26, and the heat exchange tube 23 can adsorb the heat in the exhaust gas flowing into the inside of the box body 1, and the adsorbed heat will be transferred to the water source in the heat exchange tube 23, and then the adsorbed water source will flow back into the inside of the water tank 24, and continue to flow into the inside of the heat exchange tube 23 through the water pump 26 again, and repeat the cycle in the heat exchange tube 23 flow to achieve repeated heat absorption. When the water source inside the water tank 24 absorbs a certain amount of heat, the temperature will rise. At this time, the staff can observe the temperature of the water source inside the water tank 24 through the temperature sensor display 42. When the water source reaches a certain temperature, the staff can take out the water source through the drain pipe 27. At the same time, the exhaust gas after heat exchange will be discharged through the air outlet block 22 and filtered by the activated carbon plate 33 when discharged. This can solve the problem that the water source has a short contact time with the cold water pipe, hot water pipe and titanium pipe during flow, and cannot effectively absorb heat. In addition, the exhaust gas will be directly discharged through the exhaust gas outlet, and the exhaust gas cannot be effectively filtered, and the impurities in the exhaust gas will still be blown into the atmosphere.

[0034] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A device for recovering waste heat from electroplating waste gas, comprising a housing (1), characterized in that: An air inlet pipe (21) is provided on one side of the box body (1), and an air outlet block (22) is provided on the other side of the box body (1). A heat exchange pipe (23) is provided inside the box body (1), and both ends of the heat exchange pipe (23) pass through the box body (1). A water storage tank (24) is fixedly connected to the outside of the heat exchange pipe (23), and the water storage tank (24) is arranged on one side of the box body (1). A cover plate (25) is provided on the upper side of the water storage tank (24). A water pump (26) is fixedly connected to one side of the box body (1), and the water pump (26) is arranged on the outside of the heat exchange pipe (23). A drain pipe (27) is fixedly connected to the lower side of the water storage tank (24), and a valve body (28) is provided on the outside of the drain pipe (27).

2. The electroplating waste gas waste heat recovery device according to claim 1, characterized in that: A slot (81) is provided on the upper side of the water storage tank (24), and a plug plate (82) is fixedly connected to the lower side of the cover plate (25), wherein the plug plate (82) is movably plugged into the inside of the slot (81).

3. The electroplating waste gas waste heat recovery device according to claim 1, characterized in that: A heat-insulating layer (7) is fixedly connected to the outside of the water storage tank (24), and the heat-insulating layer (7) is arranged on the outside of the heat exchange tube (23).

4. The electroplating waste gas waste heat recovery device according to claim 1, characterized in that: A hollow titanium tube (6) is arranged inside the box body (1), and the hollow titanium tube (6) is fixedly connected to the outside of the heat exchange tube (23).

5. The electroplating waste gas waste heat recovery device according to claim 1, characterized in that: A fixing rod (5) is fixedly connected to the interior of the box body (1), and the fixing rod (5) is fixedly connected to the outside of the heat exchange tube (23).

6. The electroplating waste gas waste heat recovery device according to claim 5, characterized in that: A screw rod (31) and a limiting rod (32) are provided on one side of the gas outlet block (22); an activated carbon plate (33) is provided on the outer side of the screw rod (31); the activated carbon plate (33) is threadedly connected to the outer side of the screw rod (31); and the activated carbon plate (33) is slidably connected to the outer side of the limiting rod (32).

7. The electroplating waste gas waste heat recovery device according to claim 1, characterized in that: A reinforcing oblique block (9) is fixedly connected to one side of the box body (1), and the reinforcing oblique block (9) is fixedly connected to the lower side of the water storage tank (24). A pressure display (41) and a temperature sensor display (42) are fixedly connected to the upper side of the cover plate (25).

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