Flue gas filtering device for plastic melting

Abstract

The utility model provides a flue gas filtering device for plastic melting, which comprises a fixed box, a water tank fixed at the top of the fixed box, a fixedly connected gas delivery pipe penetrating through the water tank, a first moving frame penetrating through the water tank, and a second moving frame fixed at one side of the first moving frame, bearing plates are fixed to the inner sides of the first moving frame and the second moving frame, first filtering plates are fixed to the bearing plates through bolts, an electric telescopic rod used for driving the second moving frame to transversely move is arranged at the top of the water tank, and the water tank communicates with an exhaust pipe located above the first moving frame. According to the utility model, high-temperature flue gas can be effectively cooled and then filtered, so that the condition that the service life of the first filter plate is shortened after the first filter plate is influenced by high temperature is avoided, and when the first filter plate needs to be replaced in the later period, the first filter plate can be quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a fume filtering device for plastic melting. Background Art

[0002] When recycling plastics, they are generally placed in a melting device and melted into a liquid state at high temperature, the liquid plastic is separated from other materials, and then the liquid plastic is collected; when the plastic is melted at high temperature in the melting device, a large amount of smoke is generated, which is toxic and harmful. If it is discharged directly without treatment, it will pollute the environment. Therefore, a filtering device is needed to treat the smoke, and then the treated smoke is discharged, so it will not pollute the environment; but when the filtering device is used nowadays, since the smoke generated by the high-temperature melting of the plastic is at a high temperature, the filtering components in the filtering device, such as the filter net or the filter membrane, will be affected by the high temperature after filtering the high-temperature smoke for a long time, which will seriously reduce the service life of the filtering components and shorten the service life of the filtering components. The staff needs to replace the filtering components frequently, which increases the use cost of the filtering device, and the replacement process of the filtering components is cumbersome, which brings great trouble to the staff. Utility Model Content

[0003] The utility model discloses a fume filter device for plastic melting, which solves the problem that the service life of the filter components in the filter device will be seriously reduced after filtering high-temperature smoke for a long time, and the staff needs to frequently replace the filter components, and the replacement process of the filter components is cumbersome.

[0004] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions:

[0005] A smoke filtering device for melting plastics comprises a fixed box, a water tank is fixed on the top of the fixed box, a gas pipe fixedly connected and having an air outlet end located under the water surface in the water tank passes through the water tank, a No. 1 mobile frame passes through the water tank, a No. 2 mobile frame is fixed to one side of the No. 1 mobile frame, a bearing plate is fixed to the inner sides of the No. 1 mobile frame and the No. 2 mobile frame, a filter plate is fixed to the bearing plate by bolts, an electric telescopic rod for driving the No. 2 mobile frame to move horizontally is provided on the top of the water tank, and an exhaust pipe located above the No. 1 mobile frame is connected to the water tank; a water pump is fixed to one side of the fixed box, a drainage end of the water pump is connected to a connecting pipe passing through the water tank, and a portion of the connecting pipe located in the water tank is connected to a spray plate located above the gas pipe.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] When the gas pipe inputs the high-temperature flue gas into the water tank, the high-temperature flue gas first enters the water in the water tank, and the water can cool the high-temperature flue gas and filter out impurities such as dust carried in the high-temperature flue gas; when the flue gas is separated from the water in the water tank, the water pump is started to discharge the water in the fixed box into the connecting pipe, and the water in the connecting pipe is sprayed out through the spray plate to further cool and filter the flue gas, so as to avoid the water in the water tank from being in contact with the high-temperature flue gas for a long time, causing the water temperature to rise, resulting in the inability to effectively cool the high-temperature flue gas; then, when the flue gas in the water tank passes through the No. 1 filter plate on the inner side of the No. 1 mobile rack, the toxic and harmful gases in the flue gas can be effectively filtered, and then the filtered flue gas is discharged through the exhaust pipe; when the No. 1 filter plate in the No. 1 mobile rack After the filter plate has been used for a long time, the electric telescopic rod can be started to move the No. 2 mobile frame toward the water tank. After the No. 2 mobile frame is moved into the water tank, the No. 1 mobile frame is moved out of the water tank, and the staff can remove the bolts on the bearing plate and disassemble and replace the No. 1 filter plate inside the No. 1 mobile frame, while the No. 1 filter plate inside the No. 2 mobile frame can continue to filter the flue gas entering the water tank. The replacement process is simple and fast, and there is no need to stop discharging the flue gas into the water tank. The utility model can effectively cool down the high-temperature flue gas and then filter the flue gas, so as to avoid the No. 1 filter plate being affected by the high temperature and reducing the service life of the No. 1 filter plate, and when the No. 1 filter plate needs to be replaced later, the No. 1 filter plate can also be quickly replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model in front view and section;

[0009] Figure 2 It is a schematic structural diagram of a cross-section of the first mobile frame of the utility model.

[0010] In the figure: 1. fixed box; 2. water tank; 21. gas pipe; 22. water inlet pipe; 23. exhaust pipe; 3. No. 1 mobile frame; 31. No. 2 mobile frame; 32. load-bearing plate; 33. No. 1 filter plate; 4. partition; 41. cross pipe; 5. load-bearing frame; 51. No. 2 filter plate; 52. positioning rod; 53. sealing plate; 54. connecting rod; 6. drain pipe; 7. electric telescopic rod; 71. mobile plate; 72. baffle; 73. support rod; 8. water pump; 81. connecting pipe; 82. spray plate; 9. thermometer. DETAILED DESCRIPTION

[0011] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 and Figure 2As shown, the utility model provides a fume filtering device for melting plastics, comprising a fixed box 1, a water tank 2 is fixed on the top of the fixed box 1, a gas pipe 21 fixedly connected and with an outlet end located under the water surface of the water tank 2 is passed through the water tank 2, a No. 1 mobile frame 3 is passed through the water tank 2, a No. 2 mobile frame 31 is fixed on one side of the No. 1 mobile frame 3, a bearing plate 32 is fixed on the inner sides of the No. 1 mobile frame 3 and the No. 2 mobile frame 31, a No. 1 filter plate 33 is fixed on the bearing plate 32 by bolts, an electric telescopic rod 7 for driving the No. 2 mobile frame 31 to move horizontally is provided on the top of the water tank 2, and the water tank 2 is connected with an exhaust pipe 23 located above the No. 1 mobile frame 3; a water pump 8 is fixed on one side of the fixed box 1, and the drainage end of the water pump 8 is connected with a connecting pipe 81 that passes through the water tank 2, and the part of the connecting pipe 81 located in the water tank 2 is connected with a spray plate 82 located above the gas pipe 21.

[0013] like Figure 1 As shown, the fixed end of the electric telescopic rod 7 is fixed to the top of the water tank 2, and the telescopic end of the electric telescopic rod 7 is fixed with a moving plate 71 connected to the second moving frame 31, and the top of the moving plate 71 is fixed with a baffle 72, and the bottom of the baffle 72 is slidably connected with a support rod 73 fixed to the top of the water tank 2. The distance from left to right of the baffle 72 is the same as the distance from the right side of the No. 1 mobile frame 3 to the left side of the No. 2 mobile frame 31. When the No. 1 mobile frame 3 or the No. 2 mobile frame 31 is located outside the water tank 2, the baffle 72 can block the No. 1 mobile frame 3 or the No. 2 mobile frame 31, and play a role of shielding and protecting the No. 1 filter plate 33 in the No. 1 mobile frame 3 or the No. 2 mobile frame 31; when the electric telescopic rod 7 is started, the telescopic end of the electric telescopic rod 7 can drive the No. 2 mobile frame 31 to move through the moving plate 71, so that the No. 2 mobile frame 31 drives the No. 1 mobile frame 3 to move, and the baffle 72 will also move with the moving plate 71; the support rod 73 can support the baffle 72 and assist the baffle 72 in moving.

[0014] like Figure 1As shown, a partition 4 is fixed in the fixed box 1, and a horizontal pipe 41 passes through the partition 4 close to the top surface of the fixed box 1. A support frame 5 is fixed to the side of the partition 4 facing away from the water pump 8. The support frame 5 is fixed to the inner wall of the fixed box 1, and a No. 2 filter plate 51 is placed on the support frame 5. A drain pipe 6 is connected to the water tank 2, and the other end of the drain pipe 6 is connected to the fixed box 1 and is located below the No. 2 filter plate 51. The connection between the drain pipe 6 and the fixed box 1 is located on the side of the partition 4 facing away from the water pump 8. After opening the valve on the drain pipe 6, the water in the water tank 2 can be discharged into the fixed box 1, and the second filter plate 51 can block the impurities in the water to prevent the impurities from passing through the second filter plate 51; when the water level on the side of the partition 4 away from the water pump 8 in the fixed box 1 rises and approaches the cross pipe 41, the water filtered by the second filter plate 51 can flow through the cross pipe 41 to the side of the partition 4 close to the water pump 8, so that the water pump 8 can pump the filtered water into the connecting pipe 81 for continuous circulation; when too much impurities are accumulated under the second filter plate 51, the slag discharge pipe (with a slag discharge pipe) on the left side of the fixed box 1 can be opened. Figure 1 The sewage in the fixed box 1 is discharged;

[0015] like Figure 1 As shown, a positioning rod 52 penetrating the No. 2 filter plate 51 is fixed on the carrier 5, and an opening is provided on the top of the fixed box 1, which is located directly above the No. 2 filter plate 51. A sealing plate 53 is provided in the opening, and a connecting rod 54 is fixed between the sealing plate 53 and the No. 2 filter plate 51. The positioning rod 52 can increase the stability of the No. 2 filter plate 51 placed on the carrier 5. When the No. 2 filter plate 51 needs to be inspected and replaced, the staff will advance the handle on the sealing plate 53 upward, so that the sealing plate 53 drives the No. 2 filter plate 51 through the opening on the fixed box 1 through the connecting rod 54, and then the No. 2 filter plate 51 can be replaced, and the No. 2 filter plate 51 is fixed to the connecting rod 54 by screws. After removing the screws, the No. 2 filter plate 51 can be separated from the connecting rod 54; both the No. 1 filter plate 33 and the No. 2 filter plate 51 can be activated carbon filter plates (but not limited to activated carbon filter plates, and can also be replaced according to actual conditions).

[0016] like Figure 1 As shown, the water tank 2 is connected with a water inlet pipe 22, and a thermometer 9 is also passed through the water tank 2 and fixedly connected and located below the exhaust end of the gas pipe 21. Water can be discharged into the water tank 2 through the water inlet pipe 22, and the thermometer 9 is convenient for the staff to observe the temperature of the water in the water tank 2, so as to replace the water and lower the water temperature.

[0017] During use, when the high-temperature flue gas enters the water in the water tank 2 through the gas pipe 21, the water can cool the high-temperature flue gas and filter the impurities in the flue gas. When the flue gas is separated from the water in the water tank 2, the water pump 8 is started to discharge the water in the fixed box 1 into the connecting pipe 81, and the water in the connecting pipe 81 is sprayed out through the spray plate 82 to further cool and filter the flue gas, so as to avoid the water in the water tank 2 from being in contact with the high-temperature flue gas for a long time, causing the water temperature to rise, resulting in the inability to effectively cool the high-temperature flue gas; then, when the flue gas in the water tank 2 passes through the No. 1 filter plate 33 on the inner side of the No. 1 mobile frame 3, the toxic and harmful gases in the flue gas can be filtered out. Effective filtration is performed, and the filtered smoke is then discharged through the exhaust pipe 23; when the No. 1 filter plate 33 in the No. 1 mobile frame 3 has been used for a long time, the electric telescopic rod 7 can be started to move the No. 2 mobile frame 31 toward the water tank 2. After the No. 2 mobile frame 31 is moved into the water tank 2, the No. 1 mobile frame 3 is moved outside the water tank 2, and the staff can remove the bolts on the bearing plate 32, disassemble and replace the No. 1 filter plate 33 on the inner side of the No. 1 mobile frame 3, and the No. 1 filter plate 33 in the No. 2 mobile frame 31 can continue to filter the smoke entering the water tank 2. The replacement process is simple and fast, and there is no need to stop discharging the smoke into the water tank 2.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fume filtration device for plastic melting, comprising a fixed box (1), characterized in that: A water tank (2) is fixed on the top of the fixed box (1), a gas pipe (21) is passed through the water tank (2) and is fixedly connected and has an air outlet end located below the water surface in the water tank (2), a first moving frame (3) is passed through the water tank (2), a second moving frame (31) is fixed on one side of the first moving frame (3), a bearing plate (32) is fixed on the inner side of the first moving frame (3) and the second moving frame (31), and a first filter plate (33) is fixed on the bearing plate (32) by bolts The top of the water tank (2) is provided with an electric telescopic rod (7) for driving the second movable frame (31) to move horizontally, and the water tank (2) is connected to an exhaust pipe (23) located above the first movable frame (3); a water pump (8) is fixed to one side of the fixed box (1), and the drainage end of the water pump (8) is connected to a connecting pipe (81) that passes through the water tank (2), and the part of the connecting pipe (81) located in the water tank (2) is connected to a spray plate (82) located above the air supply pipe (21).

2. A fume filtration device for plastic melting according to claim 1, characterized in that: The fixed end of the electric telescopic rod (7) is fixed to the top of the water tank (2); a moving plate (71) connected to the second moving frame (31) is fixed to the telescopic end of the electric telescopic rod (7); a baffle (72) is fixed to the top of the moving plate (71); and a support rod (73) fixed to the top of the water tank (2) is slidably connected to the bottom of the baffle (72).

3. A fume filtration device for plastic melting according to claim 1, characterized in that: A partition (4) is fixed in the fixed box (1), a transverse pipe (41) passing through the partition (4) close to the inner top surface of the fixed box (1), a support frame (5) is fixed on the side of the partition (4) facing away from the water pump (8), the support frame (5) is fixed to the inner wall of the fixed box (1), a second filter plate (51) is placed on the support frame (5), a drainage pipe (6) is connected to the water tank (2), the other end of the drainage pipe (6) is connected to the fixed box (1) and is located below the second filter plate (51), and the connection point between the drainage pipe (6) and the fixed box (1) is located on the side of the partition (4) facing away from the water pump (8).

4. A fume filtration device for plastic melting according to claim 3, characterized in that: A positioning rod (52) penetrating the second filter plate (51) is fixed on the carrier frame (5); an opening is provided on the top of the fixed box (1) and is located directly above the second filter plate (51); a sealing plate (53) is provided in the opening; and a connecting rod (54) is fixed between the sealing plate (53) and the second filter plate (51).

5. The fume filtering device for plastic melting according to claim 1, characterized in that: The water tank (2) is connected to a water inlet pipe (22), and a thermometer (9) is also passed through the water tank (2) and is fixedly connected and located below the exhaust end of the air delivery pipe (21).

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