A regenerative waste gas incinerator for color coating lines

Abstract

This utility model discloses a regenerative thermal oxidizer for a color coating line, specifically relating to the field of hazardous waste gas treatment technology in color coating production lines. It includes a furnace body, a filter box fixedly mounted on one side of the furnace body, two mounting plates symmetrically fixedly mounted on the inner wall of the filter box, two sets of support springs symmetrically mounted on each mounting plate, a pressure sensor mounted on one mounting plate, a filter screen mounted inside the filter box and above the two mounting plates, an elastic block mounted on one side of the bottom wall of the filter screen, a signal sensor mounted on the outer side of the filter box, and an alarm mounted on the outer wall of the filter box next to the signal sensor. The pressure sensor detects the weight of calcium chloride particles accumulated on the filter screen, the signal sensor analyzes the detected pressure value, and the signal sensor controls the alarm to sound an alarm, thereby reminding workers to clean the calcium chloride particles on the filter screen to prevent the accumulation of calcium chloride particles from clogging the filter screen.

Description

Technical Field

[0001] This utility model relates to the field of hazardous waste gas treatment technology in color coating production lines, and more specifically, to a regenerative waste gas incinerator for color coating lines. Background Technology

[0002] A color coating production line is a specialized unit for producing color-coated steel sheets. Color-coated steel sheets are made by coating one or more layers of organic paint onto a metal surface and then baking and curing it. The high temperature inside the curing oven causes the organic paint to volatilize, mixing with air to form waste gas, which needs to be treated in an incinerator later. A search revealed that publication number CN221991807U discloses a regenerative waste gas incinerator, comprising a furnace body. Heat exchange tubes are fixedly installed inside the furnace body, with both ends extending to the outside of the furnace body and respectively fixedly connected to a first tee pipe and a second tee pipe. A first support plate and a second support plate are fixedly installed on both sides of the furnace body via bolts. A liquid storage box is fixedly connected to the top of the first support plate, and a filter box is fixedly connected to the top of the second support plate. Four protrusions are fixedly connected around the inner wall of the filter box, and a filter screen is placed between the tops of the four protrusions. This invention solves the problem that after the water temperature rises inside the heat exchange plate, impurities in the water easily adhere to the inner wall of the heat exchange plate, forming scale. The heat exchange plate is fixedly installed inside the furnace body, making cleaning cumbersome after long-term use, reducing the practicality of the device and hindering its use. The inventors discovered the following problems with the existing technology during the development of this utility model: Over time, calcium chloride particles will accumulate on the surface of the filter screen. Since the device is not equipped with an alert system, if the staff does not promptly detect and clean the accumulated calcium chloride particles, the filter screen may become clogged, thus affecting its filtration efficiency.

[0003] Therefore, a regenerative waste gas incinerator for color coating lines is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a regenerative waste gas incinerator for color coating lines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a regenerative waste gas incinerator for a color coating line, comprising a furnace body, a filter box fixedly mounted on one side of the furnace body, two mounting plates symmetrically fixedly mounted on the inner sidewall of the filter box, two sets of support springs symmetrically mounted on each of the two mounting plates, a pressure sensor mounted on one mounting plate and located between the two sets of support springs, a filter screen mounted inside the filter box and above the two mounting plates, an elastic block mounted on one side of the bottom wall of the filter screen and directly above the pressure sensor, a signal sensor mounted on the outer side of the filter box, and an alarm mounted on the outer wall of the filter box and located on the side of the signal sensor.

[0006] Preferably, the bottom wall of the filter screen is symmetrically provided with two baffles, and the upper surface of the filter screen is symmetrically provided with two handles.

[0007] Preferably, the furnace body is provided with a detachable top cover, and a heat exchange tube is provided inside the furnace body. One end of the heat exchange tube is connected to a second connecting tube, and the other end of the heat exchange tube is connected to a third connecting tube. One end of both the second and third connecting tubes is fixedly inserted through the side wall of the furnace body.

[0008] Preferably, the third connecting pipe has a tee pipe on its side wall, a water pump is installed on the tee pipe, a liquid storage box is installed on the side wall of the furnace body, and a flushing water tank is installed on the side wall of the furnace body above the liquid storage box. One end of the tee pipe is connected to the flushing water tank, and the other end of the tee pipe is connected to the liquid storage box.

[0009] Preferably, a third ball valve is provided at the end of the three-way pipe near the third connecting pipe, a second ball valve is provided at the end of the three-way pipe near the flushing water tank, and a first ball valve is provided at the end of the three-way pipe near the liquid storage box.

[0010] Preferably, the second connecting pipe has a first connecting pipe on its side wall, the first connecting pipe has a fourth ball valve, and the end of the first connecting pipe away from the second connecting pipe is connected to the filter box.

[0011] Preferably, a burner is provided at the top of the top cover, and a catalytic combustion bed is connected and provided below the top cover and inside the furnace body.

[0012] The technical effects and advantages of this utility model are as follows: Compared with existing technologies, this regenerative thermal oxidizer for color coating lines uses a pressure sensor to detect the weight of calcium chloride particles accumulated on the filter screen. The detected pressure is then converted into an electrical signal, which is received by a signal sensor. The sensor compares the detected pressure value with a preset value range. When the detected value is greater than the preset value range, the signal sensor controls an alarm to sound, thereby reminding staff to clean the calcium chloride particles on the filter screen and prevent the accumulation of calcium chloride particles from clogging the filter screen. Attached Figure Description

[0013] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the filter box of this utility model.

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the filter screen of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the heat exchange tube of this utility model.

[0017] The attached diagram is labeled as follows: 1. Furnace body; 2. Top cover; 3. Filter box; 4. Filter screen; 5. Mounting plate; 6. Support spring; 7. Baffle plate; 8. Pressure sensor; 9. Elastic block; 10. Signal sensor; 11. Alarm; 12. Handle; 13. First connecting pipe; 14. Second connecting pipe; 15. Third connecting pipe; 16. T-connector; 17. Flushing water tank; 18. Liquid storage box; 19. Water pump; 20. First ball valve; 21. Second ball valve; 22. Third ball valve; 23. Fourth ball valve; 24. Burner; 25. Heat exchange tube. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0019] As attached Figures 1 to 4The regenerative thermal oxidizer for a color coating line includes a furnace body 1. A filter box 3 is fixedly installed on one side of the furnace body 1. Two mounting plates 5 are symmetrically fixedly installed on the inner side wall of the filter box 3. Two sets of support springs 6 are symmetrically installed on each of the two mounting plates 5. A pressure sensor 8 is installed on one mounting plate 5 and located between the two sets of support springs 6. A filter screen 4 is installed inside the filter box 3 and above the two mounting plates 5. Two baffle plates 7 are symmetrically installed on the bottom wall of the filter screen 4. Two handles 12 are symmetrically installed on the upper surface of the filter screen 4. An elastic block 9 is installed on one side of the bottom wall of the filter screen 4 and directly above the pressure sensor 8. A signal sensor 10 is installed on the outside of the filter box 3. An alarm 11 is installed on the outer wall of the filter box 3 and on the side of the signal sensor 10.

[0020] Specifically: When filter screen 4 filters calcium chloride particles in the waste liquid discharged from the first connecting pipe 13, more and more calcium chloride particles accumulate on filter screen 4. At this time, filter screen 4 is squeezed by elastic block 9 to pressure sensor 8, and then pressure sensor 8 detects the weight of calcium chloride particles accumulated on filter screen 4. The detected pressure is then converted into an electrical signal, and signal sensor 10 receives the electrical signal and compares the detected pressure value with a preset value range. When the detected value is greater than the preset value range, signal sensor 10 controls alarm 11 to sound an alarm, thereby reminding the staff to clean the calcium chloride particles on filter screen 4 to prevent calcium chloride particles from accumulating and clogging filter screen 4. Example

[0021] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details: In a preferred embodiment, a detachable top cover 2 is provided at the top of the furnace body 1, and a burner 24 is provided at the top of the top cover 2. A catalytic combustion bed is connected and provided below the top cover 2 and inside the furnace body 1. A heat exchange tube 25 is provided inside the furnace body 1. One end of the heat exchange tube 25 is connected to a second connecting pipe 14. A first connecting pipe 13 is provided on the side wall of the second connecting pipe 14. A fourth ball valve 23 is provided on the first connecting pipe 13. The end of the first connecting pipe 13 away from the second connecting pipe 14 is connected to a filter box 3. The other end of the heat exchange tube 25 is connected to a third connecting pipe 15. One end of the second connecting pipe 14 and the third connecting pipe 15 are fixedly passed through the side wall of the furnace body 1. In use, the exhaust gas and fuel gas are blown into the burner 24 and burned inside the furnace body 1. At the same time, the heat exchange medium inside the heat exchange tube 25 is heated during combustion. Finally, the gas flows out through the second connecting pipe 14 and is transmitted to the user unit.

[0022] In a preferred embodiment, a three-way pipe 16 is provided on the side wall of the third connecting pipe 15, and a water pump 19 is provided on the three-way pipe 16. A liquid storage box 18 is provided on the side wall of the furnace body 1, and the filter box 3 and the liquid storage box 18 are connected and communicated through a return pipe. A flushing water tank 17 is provided on the side wall of the furnace body 1 and above the liquid storage box 18. One end of the three-way pipe 16 is connected to the flushing water tank 17, and the other end of the three-way pipe 16 is connected to the liquid storage box 18. A third ball valve 22 is provided on the end of the three-way pipe 16 near the third connecting pipe 15, a second ball valve 21 is provided on the end of the three-way pipe 16 near the flushing water tank 17, and a first ball valve 20 is provided on the end of the three-way pipe 16 near the liquid storage box 18. When scale forms inside the heat exchange tube 25 after long-term use, the pipes connected to the third connecting pipe 15 and the second connecting pipe 14 are closed, and the first ball valve 20 and the third ball valve 22 are opened. Then the liquid storage box 18 is flushed. The hydrochloric acid solution in tube 8 is drawn into the third connecting pipe 15 by the water pump 19, and flows sequentially through the heat exchange tube 25, the second connecting pipe 14, the fourth ball valve 23, and the first connecting pipe 13, finally entering the filter box 3. After entering the heat exchange tube 25, the hydrochloric acid reacts chemically with the scale, generating coarse-grained calcium chloride, which enters the filter box 3 along with the hydrochloric acid. The filter screen 4 then intercepts the granular calcium chloride. Since the filter box 3 is higher than the liquid storage box 18, the filtered hydrochloric acid can enter the liquid storage box 18 through the return pipe, further forming a cycle to clean the heat exchange tube 25. After cleaning, the drain pipe on one side of the filter box 3 can be opened and the return pipe closed. At this time, water is injected into the liquid storage box 18, and the water pump 19 is started, which can treat the hydrochloric acid inside the heat exchange tube 25 and finally flow out through the drain pipe.

[0023] The working process of this utility model is as follows: First, when cleaning the scale inside the heat exchange tube 25, close the pipes connected to the third connecting pipe 15 and the second connecting pipe 14, and open the first ball valve 20 and the third ball valve 22. Then, the hydrochloric acid solution in the storage box 18 is drawn into the third connecting pipe 15 through the water pump 19, and flows sequentially through the heat exchange tube 25, the second connecting pipe 14, the fourth ball valve 23, and the first connecting pipe 13, finally entering the filter box 3. After entering the heat exchange tube 25, the hydrochloric acid reacts chemically with the scale, generating coarse-grained calcium chloride, which enters the filter box 3 along with the hydrochloric acid. Then, the filter screen 4 intercepts the granular calcium chloride. As more and more calcium chloride particles accumulate on the filter screen 4, the filter screen 4 is compressed by the elastic block 9 to the pressure sensor 8. The pressure sensor 8 then detects the weight of the accumulated calcium chloride particles on the filter screen 4 and converts the detected pressure into an electrical signal. The signal sensor 10 receives this electrical signal and compares the detected pressure value with a preset value range. When the detected value is greater than the preset value range, the signal sensor 10 controls the alarm 11 to sound an alarm, thereby reminding the staff to clean the calcium chloride particles on the filter screen 4 to prevent the calcium chloride particles from accumulating and clogging the filter screen 4. The above is the working principle of a regenerative waste gas incinerator used in a color coating line.

Claims

1. A regenerative off-gas incinerator for a color coating line, comprising a furnace body (1), characterized in that: A filter box (3) is fixedly installed on one side of the furnace body (1). Two mounting plates (5) are symmetrically fixedly installed on the inner side wall of the filter box (3). Two sets of support springs (6) are symmetrically installed on the two mounting plates (5). A pressure sensor (8) is installed on one of the mounting plates (5) and between the two sets of support springs (6). A filter screen (4) is installed inside the filter box (3) and above the two mounting plates (5). An elastic block (9) is installed on one side of the bottom wall of the filter screen (4) and directly above the pressure sensor (8). A signal sensor (10) is installed on the outside of the filter box (3). An alarm (11) is installed on the outer wall of the filter box (3) and on one side of the signal sensor (10).

2. The regenerative off-gas incinerator for a color coating line according to claim 1, characterized in that: The bottom wall of the filter screen (4) is symmetrically provided with two baffles (7), and the upper surface of the filter screen (4) is symmetrically provided with two handles (12).

3. The regenerative off-gas incinerator for a color coating line according to claim 1, characterized in that: The furnace body (1) is provided with a detachable top cover (2) at the top. A heat exchange tube (25) is provided inside the furnace body (1). One end of the heat exchange tube (25) is connected to the second connecting tube (14), and the other end of the heat exchange tube (25) is connected to the third connecting tube (15). One end of the second connecting tube (14) and the third connecting tube (15) are fixedly inserted through the side wall of the furnace body (1).

4. The regenerative off-gas incinerator for a color coating line according to claim 3, characterized in that: The third connecting pipe (15) has a three-way pipe (16) on its side wall, and a water pump (19) is installed on the three-way pipe (16). The furnace body (1) has a liquid storage box (18) on its side wall, and a flushing water tank (17) is installed on the side wall of the furnace body (1) above the liquid storage box (18). One end of the three-way pipe (16) is connected to the flushing water tank (17), and the other end of the three-way pipe (16) is connected to the liquid storage box (18).

5. The regenerative off-gas incinerator for a color coating line according to claim 4, characterized in that: A third ball valve (22) is provided on one end of the three-way pipe (16) near the third connecting pipe (15), a second ball valve (21) is provided on one end of the three-way pipe (16) near the flushing water tank (17), and a first ball valve (20) is provided on one end of the three-way pipe (16) near the liquid storage box (18).

6. The regenerative off-gas incinerator for a color coating line according to claim 3, characterized in that: The second connecting pipe (14) has a first connecting pipe (13) on its side wall. A fourth ball valve (23) is provided on the first connecting pipe (13). The end of the first connecting pipe (13) away from the second connecting pipe (14) is connected to the filter box (3).

7. The regenerative off-gas incinerator for a color coating line according to claim 3, characterized in that: A burner (24) is provided at the top of the top cover (2), and a catalytic combustion bed is connected and provided below the top cover (2) and inside the furnace body (1).

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