Exhaust gas spray tower packing extraction device

Abstract

The utility model relates to waste gas treatment equipment technical field especially relates to a kind of waste gas spray tower packing extraction device, including the negative pressure device being set to the outside of waste gas spray tower, negative pressure device includes negative pressure fan, packing collection box, negative pressure fan connecting pipeline and packing box connecting pipeline, packing collection box is opened with feed inlet, feed inlet is connected with the discharge port of packing box connecting pipeline, and the bottom opening of packing collection box is provided with discharge plug valve;It further includes the support frame for supporting packing collection box;Negative pressure device further includes fixed rod, and the suction end of packing box connecting pipeline is connected with the free end of fixed rod, when using, the free end of fixed rod is inserted into the spray tower maintenance opening of waste gas spray tower and can be movably arranged in spray tower. The utility model is simple in structure, and user does not need to enter the inside operation of spray tower, and packing extraction efficiency is high, and operation safety is high.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and in particular to a waste gas spray tower packing extraction device. Background Technology

[0002] Spray towers are a commonly used piece of equipment for waste gas treatment. Figure 1 This diagram illustrates a prior art waste gas scrubbing tower structure. Waste gas enters the scrubbing tower through the waste gas inlet. The waste gas and solution within the tower pass through a first and second layer of packing material, where they undergo absorption or neutralization reactions. After absorption or neutralization, the waste gas passes through a demister layer for demisting before being discharged through the outlet. The solution in the storage tank is evenly distributed onto the packing material by a water pump and spray nozzles, and finally flows back into the storage tank for continuous circulation. Routine inspections, packing material replacement, and maintenance are performed by accessing the tower through the maintenance port. During the waste gas treatment process, prolonged operation can lead to scaling and organic matter trapping on the packing material surface, causing blockage of the packing layer. This reduces gas-liquid contact efficiency, shortens liquid residence time, and gradually decreases the waste gas treatment efficiency. In severe cases, the packing layer support may break, causing the waste gas tower to collapse internally, ultimately resulting in the release of substandard waste gas into the atmosphere and causing environmental pollution.

[0003] In existing technologies, by setting a replacement cycle, personnel enter the spray tower and manually remove the packing material. Because the spray tower is a confined space, the safety risks of personnel entering the tower are high, and the work efficiency is very low. Furthermore, personnel entering the spray tower can easily cause the support layer to collapse, resulting in safety accidents.

[0004] Therefore, there is an urgent need to provide a waste gas spray tower packing extraction device to solve this problem existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a waste gas spray tower packing extraction device that eliminates the need for operators to enter the spray tower, resulting in high packing extraction efficiency and high operational safety.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A waste gas spray tower packing extraction device includes a negative pressure device installed outside the waste gas spray tower. The negative pressure device includes a negative pressure fan, a packing collection box, a negative pressure fan connecting pipe, and a packing box connecting pipe. One end of the negative pressure fan connecting pipe is connected to the negative pressure fan, and the other end of the negative pressure fan connecting pipe is connected to the exhaust port of the packing collection box. The packing collection box has a feed inlet, which is connected to the discharge port of the packing box connecting pipe. A discharge gate valve is installed at the bottom opening of the packing collection box.

[0008] It also includes a support frame for supporting the filler collection box;

[0009] The negative pressure device also includes a fixing rod. The suction end of the filling box connecting pipe is connected to the free end of the fixing rod. In use, the free end of the fixing rod extends into the maintenance port of the exhaust gas spray tower and is movably installed inside the spray tower.

[0010] As a preferred technical solution, the bottom of the packing collection box is funnel-shaped, and the horizontal support beam at the top of the support frame is fixed to the outer wall of the tapered section at the bottom of the packing collection box.

[0011] As a further preferred embodiment, the inner wall of the packing collection box is provided with a baffle that slopes downwards, and the baffle is located above the feed inlet.

[0012] As a preferred technical solution, the fixing rod is a pipe with a diameter of 30-60mm, and the pipe material is PVC, PP or PPH.

[0013] As a further preferred embodiment, the fixing rod includes an integrally formed main pipe and a branch pipe, the branch pipe being connected to the suction end of the filling box connecting pipe.

[0014] As a preferred technical solution, the packing collection box is further provided with a second inlet, which is located above the first inlet. The height of the first inlet is close to the height of the lower packing layer of the exhaust gas scrubbing tower, and the height of the second inlet is close to the height of the upper packing layer of the exhaust gas scrubbing tower.

[0015] As a further preferred embodiment, a second baffle (16) is provided inside the packing collection box (2) at a downward angle, and the second baffle is located above the second feed inlet (15).

[0016] As a preferred technical solution, a filter screen is provided on the top of the packing collection box.

[0017] As a further preferred embodiment, the filter screen is a composite filter screen, which includes a large-pore support mesh and a fine-pore filter cotton that are connected to each other.

[0018] As a preferred technical solution, the top side wall of the packing collection box is provided with a packing box observation port.

[0019] The beneficial effects of this invention are as follows: A negative pressure device is installed outside the exhaust gas scrubbing tower. When the packing material inside the exhaust gas scrubbing tower needs to be replaced, the operator stands outside the scrubbing tower's inspection port and inserts the free end of a fixed rod connected to the packing box's connecting pipe into the packing layer of the exhaust gas scrubbing tower. The movement of the fixed rod brings the suction port into contact with the surface of the packing balls. The negative pressure fan is then activated, which extracts the packing balls from the exhaust gas scrubbing tower and transports them to the packing collection box. This invention has a simple structure, eliminates the need for personnel to enter the scrubbing tower, offers high packing extraction efficiency, and ensures high operational safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an existing waste gas spray tower.

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0023] Among them: 01. Exhaust gas inlet, 02. First layer packing, 03. Second layer packing, 04. Demisting layer, 05. Discharge outlet, 06. Solution storage tank, 07. Water pump, 08. Nozzle, 09. Inspection port;

[0024] 1-Negative pressure fan, 2-Packaging collection box, 3-Negative pressure fan connecting pipe, 4-Packaging box connecting pipe, 5-Baffle, 6-Discharge gate valve, 7-Support frame, 8-Filter screen, 9-Spray tower inspection port, 10-Airflow direction including packing balls, 11-Airflow direction after filtration, 12-Packaging box observation port, 13-Fixing rod, 14-Inlet, 15-Second inlet, 16-Second baffle. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component or structure is referred to as being "fixed to" or "set on" another component or structure, it can be directly on or indirectly on the other component or structure. When a component or structure is referred to as being "connected to" another component or structure, it can be directly connected to or indirectly connected to the other component or structure.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device, component, or structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Example 1

[0030] like Figure 1 As shown in the figure, a waste gas spray tower packing extraction device of this embodiment includes a negative pressure device installed outside the waste gas spray tower. The negative pressure device includes a negative pressure fan 1, a packing collection box 2, a negative pressure fan connecting pipe 3, and a packing box connecting pipe 4. One end of the negative pressure fan connecting pipe 3 is connected to the negative pressure fan 1, and the other end of the negative pressure fan connecting pipe 3 is connected to the exhaust port of the packing collection box 2. The packing collection box 2 has an inlet 14, which is connected to the outlet of the packing box connecting pipe 4. A discharge gate valve 6 is provided at the bottom opening of the packing collection box 2.

[0031] It also includes a support frame 7 for supporting the filler collection box 2;

[0032] The negative pressure device also includes a fixed rod 13. The suction end of the packing box connecting pipe 4 is connected to the free end of the fixed rod 13. In use, the free end of the fixed rod 13 extends into the maintenance port 9 of the exhaust gas spray tower and is movably installed inside the spray tower.

[0033] In this embodiment, the bottom of the packing collection box 2 is funnel-shaped, and the horizontal support beam at the top of the support frame 7 is fixed to the outer wall of the tapered section at the bottom of the packing collection box 2.

[0034] In this embodiment, the inner wall of the packing collection box 2 is inclined downward and a baffle 5 is provided. The baffle 5 is located above the feed inlet 14.

[0035] A negative pressure device is installed outside the exhaust gas scrubbing tower. When the packing inside the exhaust gas scrubbing tower needs to be replaced, the operator stands outside the scrubbing tower inspection port 9 and inserts the free end of the fixed rod 13, which is connected to the packing box connecting pipe 4, into the packing layer of the exhaust gas scrubbing tower. The movement of the fixed rod 13 brings the suction port into contact with the surface of the packing balls. The negative pressure fan 1 is then started. Under the action of negative pressure, the packing balls enter the packing box connecting pipe 4 along the suction port, and then enter the packing collection box 2 through the feed inlet 14. Due to the sudden expansion of the cross-section of the packing collection box 2, the airflow velocity decreases, and most of the packing will fall directly to the bottom of the box under the action of gravity. However, in order to prevent lighter or not fully decelerated packing from being carried upward by the airflow under excessive negative pressure, directly impacting or passing through the filter screen 8 and entering the negative pressure fan 1, causing impeller damage, a baffle 5 is inclined above the feed inlet 14 to change the airflow path, buffer and block the airflow carrying the packing, and ensure that the packing is safely collected at the bottom of the box. Figure 1 As can be seen, the airflow direction 10 containing the packing balls is first inclined downwards along the direction of the baffle 5, then rises vertically and passes through the filter screen 8. After filtration, the airflow direction 11 is vertically upwards and enters the top of the packing collection box 2. Then, under the action of negative pressure, it is sucked into the negative pressure fan 1 along the negative pressure fan connecting pipe 3. This utility model has a simple structure, and the user does not need to enter the spray tower to work. It has high packing extraction efficiency and high operational safety.

[0036] In this embodiment, the support frame 7 provides stable support for the entire packing collection box 2, ensuring the stability of the equipment during operation. The horizontal support beam at the top of the support frame 7 is fixed to the outer wall of the conical section at the bottom of the packing collection box 2. The support connection point is selected on the lower outer wall of the conical section with high structural strength, resulting in a reasonable force transmission path and structural stability, preventing the packing collection box 2 from shaking due to its own weight or packing impact. The bottom of the packing collection box (2) is designed in a funnel shape, which guides the collected packing to fall naturally and concentrate at the only outlet, namely the opening of the discharge gate valve 6. When the negative pressure fan 1 is working, the discharge gate valve 6 must be tightly closed to maintain the sealing of the collection box, thereby maintaining the negative pressure state required by the entire system and ensuring that the suction operation is normal.

[0037] In this embodiment, the top side wall of the packing collection box 2 is provided with a packing box observation port 12. The operator can easily check the situation inside the packing collection box 2 through the packing box observation port 12. When it is found that the packing needs to be emptied, the discharge gate valve 6 is opened, and the packing is smoothly discharged into the ton bag below under the action of gravity.

[0038] In this embodiment, the fixing rod 13 is a pipe with a diameter of 30-60mm, and the pipe material is PVC, PP, or PPH. Specifically, a suction pipe is fixedly connected to the free end of the fixing rod 13, and the suction port of the pipe connecting the packing box body to the suction pipe is connected to the suction pipe by a stainless steel cable tie. By manipulating the fixing rod 13 from outside the spray tower, the operator can precisely insert the suction port into the packing layer and make it directly contact the packing balls, ensuring extraction efficiency.

[0039] The 30-60mm diameter of the fixing rod 13 ensures sufficient strength and rigidity to support the suction pipe and prevents it from easily bending or breaking when moved or loosened by external force applied by the operator. The working environment inside the spray tower for treating waste gas is typically highly corrosive (such as acidic or alkaline gases and chemical solutions). PVC, PP, and PPH are all recognized excellent corrosion-resistant engineering plastics, capable of long-term stable operation in this harsh environment, and not easily damaged by rust. Furthermore, these plastics are lightweight, further ensuring that operators can easily manipulate the fixing rod 13 from outside the tower, meeting the requirements of efficient and safe production.

[0040] In this embodiment, a filter screen 8 is provided on the top of the packing collection box 2. Preferably, the filter screen 8 is a stainless steel filter screen with a mesh size of 20-100 mesh. The filter screen 8 is installed between the packing collection box 2 and the negative pressure fan connecting pipe 3, and its mesh diameter is designed to be smaller than the diameter of the packing balls. In this way, even if a small amount of packing is carried away by the strong negative pressure airflow, it will be effectively intercepted by the filter screen 8 on one side of the collection box, thereby ensuring that only clean air can pass through and enter the fan.

[0041] Example 2

[0042] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the fixing rod 13 in this embodiment includes an integrally formed main pipe and a branch pipe, and the branch pipe is connected to the suction end of the packing box connecting pipe 4. Preferably, the fixing rod 13 is an oblique tee pipe, and the operating end of the fixing rod 13 is closed. When the negative pressure fan 1 is started, the packing balls are sucked into the main pipe of the fixing rod 13 and then enter the packing box connecting pipe 4 through the branch pipe. The connection between the packing box connecting pipe 4 and the fixing rod 13 is more convenient and stable, and the negative pressure extraction effect is better.

[0043] In this embodiment, the packing collection box 2 is also provided with a second inlet 15. The second inlet 15 is located above the inlet 14, and the height of the inlet 14 is close to the height of the lower packing layer of the exhaust gas scrubbing tower, while the height of the second inlet 15 is close to the height of the upper packing layer of the exhaust gas scrubbing tower.

[0044] In multi-layered packing spray towers, the packing material in different layers may have varying degrees of fouling or require separate replacement. Traditional methods require starting from the top layer, disassembling the support plates layer by layer, or blindly extracting downwards, a cumbersome and risky process. The second inlet 15 enables precise layered extraction, significantly improving safety and efficiency. Furthermore, the height of the two inlets is close to the height of the upper and lower layers of packing material in the exhaust gas spray tower, effectively reducing the transportation distance of the packing box connecting pipe 4 and resulting in high extraction efficiency.

[0045] In this embodiment, a second baffle 16 is inclined downward inside the packing collection box 2, and the second baffle 16 is located above the second feed inlet 15. The second baffle 16 is configured to create an independent buffer settling space for the airflow and packing from the second feed inlet 15, thereby optimizing the airflow organization, improving the collection efficiency, and further protecting the equipment of this utility model.

[0046] In this embodiment, filter 8 is a composite filter, comprising a double-layer structure of interconnected large-pore support mesh and fine-pore filter cotton. The large-pore support mesh provides mechanical strength and intercepts large pieces of filler. Its mesh diameter is still smaller than the diameter of the filler balls, ensuring that no intact filler balls can pass through. It also provides a robust support framework for the fragile inner fine-pore filter cotton, preventing it from being sucked up or torn by the high-speed airflow. The fine-pore filter cotton captures fine dust. During extraction, the filler (especially scaled or fragile filler) generates a large amount of fine dust through friction. This dust can easily pass through the first layer of large-pore mesh; without the filter cotton, it would directly enter the fan. The composite filter provides better filtration.

[0047] The rest of the content in this embodiment is the same as in embodiment 1, and will not be repeated here.

[0048] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A device for extracting packing material from a waste gas spray tower, characterized in that: The system includes a negative pressure device installed outside the exhaust gas spray tower. The negative pressure device includes a negative pressure fan (1), a packing collection box (2), a negative pressure fan connecting pipe (3), and a packing box connecting pipe (4). One end of the negative pressure fan connecting pipe (3) is connected to the negative pressure fan (1), and the other end of the negative pressure fan connecting pipe (3) is connected to the exhaust port of the packing collection box (2). The packing collection box (2) has an inlet (14), which is connected to the outlet of the packing box connecting pipe (4). A discharge gate valve (6) is installed at the bottom opening of the packing collection box (2). It also includes a support frame (7) for supporting the filler collection box (2); The negative pressure device also includes a fixed rod (13). The suction end of the filling box connecting pipe (4) is connected to the free end of the fixed rod (13). When in use, the free end of the fixed rod (13) extends into the spray tower inspection port (9) of the waste gas spray tower and is movably installed inside the spray tower.

2. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: The bottom of the packing collection box (2) is funnel-shaped, and the horizontal support beam at the top of the support frame (7) is fixed to the outer wall of the tapered section at the bottom of the packing collection box (2).

3. The waste gas spray tower packing extraction device as described in claim 1 or 2, characterized in that: The inner wall of the filler collection box (2) is inclined downward and a baffle (5) is provided, which is located above the feed inlet (14).

4. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: The fixing rod (13) is a pipe with a diameter of 30-60mm, and the pipe material is PVC, PP or PPH.

5. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: The fixing rod (13) includes an integrally formed main pipe and a branch pipe, and the branch pipe is connected to the suction end of the filling box connecting pipe (4).

6. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: The packing collection box (2) is also provided with a second inlet (15), which is located above the inlet (14). The height of the inlet (14) is close to the height of the lower packing layer of the exhaust gas scrubbing tower, and the height of the second inlet (15) is close to the height of the upper packing layer of the exhaust gas scrubbing tower.

7. The waste gas spray tower packing extraction device as described in claim 6, characterized in that: The packing collection box (2) is provided with a second baffle (16) that is inclined downwards, and the second baffle is located above the second feed inlet (15).

8. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: A filter screen (8) is provided on the top of the packing collection box (2).

9. The waste gas spray tower packing extraction device as described in claim 8, characterized in that: The filter screen (8) is a composite filter screen, which includes a large-pore support screen and a fine-pore filter cotton that are connected to each other.

10. The waste gas spray tower packing extraction device as described in claim 1, characterized in that: The top side wall of the packing collection box (2) is provided with a packing box observation port (12).

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