A black liquor treatment device in corrugated paper production

Abstract

The utility model discloses a black liquor processing device in corrugated paper production, include: combustion furnace, drying box and vacuum pump, and the one end of combustion furnace is fixedly connected with the conveying pipe, and the one end of conveying pipe is fixedly connected with dust removal tank, and the front of dust removal tank is rotatably connected with the door through the hinge, and dust collection box is placed in the dust removal tank, and the movable plug -in of dust collection box inside has the portal plate, the utility model discloses after the filter mechanism one is inserted into the portal plate and inserts the dust collection box, and the filter mechanism two then inserts in the dust collection box through bag filter and is pasted with the back of portal plate, and then uses the mounting block and bolt fixed, and then installs each component into dust removal tank, makes the portal plate cover the conveying pipe port, when the flue gas enters the dust removal tank, first through the filter screen contact of portal plate and filter mechanism one, and the big particle dust is intercepted and falls to the dust collection box, and the flue gas after preliminary filtration enters the bag filter of filter mechanism two, and the submicron level dust is captured through its fine filter bag, and double -layer filtration effectively separates most dust.

Description

Technical Field

[0001] This utility model relates to the technical field of black liquor treatment equipment in corrugated base paper production, specifically a black liquor treatment device in corrugated base paper production. Background Technology

[0002] Corrugated base paper production typically uses waste paper pulp or chemical pulping processes. If chemical pulping is used, a large amount of black liquor will be generated during the pulping process. This is waste liquor formed when the alkali reacts with lignin, cellulose and other components in the raw materials during cooking. Black liquor treatment equipment can remove organic matter and toxic substances from the black liquor, so that the final wastewater discharge meets environmental protection standards and avoids damage to the ecological environment.

[0003] For example, a black liquor treatment device for corrugated base paper production disclosed in Chinese patent literature (publication number: CN210529357U) uses a dust collection box with a collection frame placed at the top and bottom of the dust filter plate inside. During dust filtration, the filtered dust naturally falls into the collection frame and is collected. This allows for easy emptying of the collection frame, filtering dust from the flue gas before desulfurization, ensuring clean flue gas entering subsequent pipelines and equipment. This effectively reduces the risk of dust clogging pipelines. The device is simple in structure, easy to use, and effectively treats sulfides in flue gas, bringing significant convenience to environmental management. However, during the disassembly of the dust filter plate and collection frame, due to their separate design, the plate vibrates when pulled, easily causing attached dust to disperse into the workshop environment or inside the equipment, leading to secondary pollution. Utility Model Content

[0004] The purpose of this utility model is to provide a black liquor treatment device in the production of corrugated base paper in order to solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a black liquor treatment device for corrugated base paper production, comprising: a combustion furnace, a drying chamber, and a vacuum pump. One end of the combustion furnace is fixedly connected to a conveying pipe, and one end of the conveying pipe is fixedly connected to a dust collection box. The front of the dust collection box is rotatably connected to a door via a hinge. A dust collection box is placed inside the dust collection box, and a gantry plate is movably inserted inside the dust collection box. A first filter mechanism is provided on the inner side of the gantry plate, and a second filter mechanism is provided on the back side of the gantry plate. A limiting mechanism is provided at one end of the inner side of the door.

[0006] As a further embodiment of this utility model: the filtering mechanism includes a frame plate, a filter screen and a handle. The frame plate is movably snapped into the inner side of the gantry plate, the filter screen is fixedly connected to the inner side of the frame plate, and the handle is fixedly connected to the top center of the frame plate.

[0007] As a further embodiment of this utility model: the second filter mechanism includes a bag filter, a mounting block and a bolt. The bag filter is movably inserted into the inside of the dust collection box and fits against the back of the gantry plate. The mounting block is fixedly connected to one end of the top of the bag filter. The bolt is located above the mounting block, and the other end of the bolt passes through the mounting block and is threadedly connected to the gantry plate.

[0008] As a further embodiment of this utility model: the limiting mechanism includes a threaded rod, a limiting top block and a handle. The threaded rod is threadedly connected to the inside of the box door, and both ends of the threaded rod extend to the outside of the box door. The limiting top block is fixedly connected to one end of the threaded rod, and the handle is fixedly connected to the other end of the threaded rod.

[0009] As a further embodiment of this utility model: an ear block is fixedly connected to one side of the box door, and an internally threaded ear block is fixedly connected to one side of the dust collector box. A threaded fastener is provided on the front of the ear block, and the other end of the threaded fastener passes through the ear block and is threadedly connected to the internally threaded ear block.

[0010] As a further improvement of this utility model: a feed pipe is fixedly connected to the top of the drying chamber, and a discharge pipe is fixedly connected to one side of the drying chamber.

[0011] As a further embodiment of this utility model: the inlet and outlet of the vacuum pump are fixedly connected to the dust collection box and the drying box respectively through pipes, and the gantry plate is movably inserted into the dust collection box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, filter mechanism one is inserted into the gantry plate and then into the dust collection box. Filter mechanism two is inserted into the dust collection box via a bag filter and is attached to the back of the gantry plate. It is then fixed with mounting blocks and bolts. This design facilitates the disassembly, installation, and handling of the filter components. Subsequently, all components are installed into the dust collection box, with the gantry plate covering the conveying pipe port. After closing the box door, threaded fasteners are used to connect the lugs and internally threaded lugs for fixation. When flue gas enters the dust collection box, it first contacts the filter screen of filter mechanism one through the gantry plate. Large dust particles are intercepted and fall into the dust collection box. The flue gas, after preliminary filtration, then enters... The bag filter of the second filtration unit captures submicron-sized dust through its fine filter bags. The double-layer filtration effectively separates most of the dust, avoiding pipe blockage and equipment wear. The purified flue gas is transported to the drying chamber through the pipeline under the negative pressure of the vacuum pump. This design adopts modular filter components. The filter screen can be pulled out and replaced, and the bag filter can be bolted off. Together with the gantry plate and dust collection box, it can be pulled out as a whole, which greatly shortens the maintenance time. Moreover, the simultaneous removal and placement of filter components and dust collection box can prevent dust from spreading during disassembly, which not only protects the health of operators and prevents equipment short circuits, but also eliminates secondary pollution in the workshop. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the dust collection box in this utility model;

[0016] Figure 3 This is a schematic diagram of the gantry panel in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the filter mechanism one in this utility model;

[0018] Figure 5 This is a schematic diagram of the second filter mechanism in this utility model; Figure 6 This is a schematic diagram of the limiting mechanism in this utility model.

[0019] In the diagram: 1. Combustion furnace; 2. Drying oven; 3. Vacuum pump; 4. Conveying pipe; 5. Dust collector; 6. Door; 7. Dust collection box; 8. Gantry plate; 9. Filter mechanism one; 901. Frame plate; 902. Filter screen; 903. Handle; 10. Filter mechanism two; 1001. Bag filter; 1002. Mounting block; 1003. Bolt; 11. Limiting mechanism; 1101. Threaded rod; 1102. Limiting top block; 1103. Handle; 12. Ear block; 13. Internal threaded ear block; 14. Threaded fastener; 15. Feed pipe; 16. Discharge pipe. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0022] Reference Figures 1 to 6 In this embodiment of the utility model, a black liquor treatment device for corrugated base paper production includes: a combustion furnace 1, a drying chamber 2, and a vacuum pump 3. One end of the combustion furnace 1 is fixedly connected to a conveying pipe 4, and one end of the conveying pipe 4 is fixedly connected to a dust collection box 5. The front of the dust collection box 5 is rotatably connected to a door 6 via a hinge. A dust collection box 7 is placed inside the dust collection box 5, and a gantry plate 8 is movably inserted inside the dust collection box 7. A first filter mechanism 9 is provided on the inner side of the gantry plate 8, and a second filter mechanism 10 is provided on the back of the gantry plate 8. A limiting mechanism 11 is provided at one end inside the door 6. The inlet and outlet of the vacuum pump 3 are fixedly connected to the dust collection box 5 and the drying chamber 2 via pipes, respectively, and the gantry plate 8 is movably inserted into the dust collection box 5.

[0023] Reference Figure 2 and Figure 4 The filter mechanism 9 includes a frame plate 901, a filter screen 902, and a handle 903. The frame plate 901 is movably snapped into the inside of the gantry plate 8, the filter screen 902 is fixedly connected to the inside of the frame plate 901, and the handle 903 is fixedly connected to the top center of the frame plate 901.

[0024] Reference Figure 2 , Figure 3 and Figure 5The second filter mechanism 10 includes a bag filter 1001, a mounting block 1002, and a bolt 1003. The bag filter 1001 is movably inserted into the inside of the dust collection box 7 and fits against the back of the gantry plate 8. The mounting block 1002 is fixedly connected to one end of the top of the bag filter 1001. The bolt 1003 is located above the mounting block 1002, and the other end of the bolt 1003 passes through the mounting block 1002 and is threadedly connected to the gantry plate 8.

[0025] Reference Figure 1 , Figure 2 and Figure 6 The limiting mechanism 11 includes a threaded rod 1101, a limiting top block 1102, and a handle 1103. The threaded rod 1101 is threadedly connected to the inside of the door 6, and both ends of the threaded rod 1101 extend to the outside of the door 6. The limiting top block 1102 is fixedly connected to one end of the threaded rod 1101, and the handle 1103 is fixedly connected to the other end of the threaded rod 1101.

[0026] Reference Figure 1 and Figure 2 A lug 12 is fixedly connected to one side of the door 6, and an internally threaded lug 13 is fixedly connected to one side of the dust collector 5. A threaded fastener 14 is provided on the front of the lug 12, and the other end of the threaded fastener 14 passes through the lug 12 and is threadedly connected to the internally threaded lug 13. A feed pipe 15 is fixedly connected to the top of the drying chamber 2, and a discharge pipe 16 is fixedly connected to one side of the drying chamber 2.

[0027] The working principle of this utility model is as follows: the flue gas generated after the black liquor is burned in the combustion furnace 1 enters the dust collection box 5 through the conveying pipe 4 to filter dust, and is then pumped to the drying box 2 by the vacuum pump 3 to remove moisture, ultimately achieving pollutant purification and flue gas drying. In use, the first filter mechanism 9 is inserted into the gantry plate 8, and then the gantry plate 8 is inserted into the dust collection box 7. The second filter mechanism 10 is inserted into the dust collection box 7 via a bag filter 1001, making it fit against the back of the gantry plate 8. The bag filter 1001 is then fixed to the gantry plate 8 using the mounting block 1002 and bolts 1003. This facilitates the disassembly and installation of the filter components, making them easy to insert and remove. Subsequently, the assembled components are placed inside the dust collection box 5, allowing... The gantry plate 8 covers one end of the conveying pipe 4 located inside the side wall of the dust collector 5. Then, the door 6 is closed, and the threaded fastener 14 is tightened to connect the lug 12 and the internally threaded lug 13, thus fixing the dust collector 5 and the door 6. When the flue gas enters the dust collector 5, it passes through the gantry plate 8 and first contacts the filter screen 902 in the first filtration mechanism 9. Large dust particles are initially intercepted and fall into the dust collection box 7. The flue gas, after initial filtration, continues to flow and enters the bag filter of the second filtration mechanism 10. The bag filter 1001, with its fine filter bag structure, captures submicron-sized fine dust particles, further purifying the flue gas. Under the dual-layer filtration, most of the dust is effectively separated, avoiding pipe blockage and equipment wear. The purified flue gas is quickly transported to the drying chamber 2 through the pipeline under the negative pressure traction of the vacuum pump 3. This operation makes maintenance more convenient. The modular filter component design means that whether it is the pull-out replacement of the filter screen 902 or the bolt removal of the bag filter 1001, no complicated tools are required. With the overall removal of the gantry plate 8 and the dust collection box 7, the downtime for maintenance is greatly shortened, and the operating efficiency of the equipment is improved. At the same time, the filter components and the dust collection box 7 are put in and taken out, which can avoid dust scattering caused by shaking when disassembling the filter components separately. This overall sealed maintenance method not only prevents the health threat of dust to operators, but also avoids the risk of short circuit caused by dust accumulation inside the equipment, and eliminates secondary pollution of the workshop environment.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A black liquor treatment device for corrugated base paper production, characterized in that, include: Combustion furnace (1), drying chamber (2) and vacuum pump (3). One end of the combustion furnace (1) is fixedly connected to a conveying pipe (4). One end of the conveying pipe (4) is fixedly connected to a dust collection box (5). The front of the dust collection box (5) is connected to a door (6) by a hinge. A dust collection box (7) is placed inside the dust collection box (5). A gantry plate (8) is movably inserted inside the dust collection box (7). A first filter mechanism (9) is provided on the inside of the gantry plate (8). A second filter mechanism (10) is provided on the back of the gantry plate (8). A limiting mechanism (11) is provided at one end of the inside of the door (6).

2. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, The first filtration mechanism (9) includes: a frame plate (901), a filter screen (902) and a handle (903). The frame plate (901) is movably snapped into the inside of the gantry plate (8). The filter screen (902) is fixedly connected to the inside of the frame plate (901). The handle (903) is fixedly connected to the top middle of the frame plate (901).

3. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, The second filtration mechanism (10) includes: a bag filter (1001), a mounting block (1002) and a bolt (1003). The bag filter (1001) is movably inserted into the inside of the dust collection box (7) and is attached to the back of the gantry plate (8). The mounting block (1002) is fixedly connected to one end of the top of the bag filter (1001). The bolt (1003) is located above the mounting block (1002). The other end of the bolt (1003) passes through the mounting block (1002) and is threadedly connected to the gantry plate (8).

4. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, The limiting mechanism (11) includes a threaded rod (1101), a limiting top block (1102), and a handle (1103). The threaded rod (1101) is threadedly connected to the inside of the door (6), and both ends of the threaded rod (1101) extend to the outside of the door (6). The limiting top block (1102) is fixedly connected to one end of the threaded rod (1101), and the handle (1103) is fixedly connected to the other end of the threaded rod (1101).

5. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, A lug (12) is fixedly connected to one side of the box door (6), and an internally threaded lug (13) is fixedly connected to one side of the dust collector (5). A threaded fastener (14) is provided on the front of the lug (12), and the other end of the threaded fastener (14) passes through the lug (12) and is threadedly connected to the internally threaded lug (13).

6. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, The top of the drying chamber (2) is fixedly connected to a feed pipe (15), and the side of the drying chamber (2) is fixedly connected to a discharge pipe (16).

7. The black liquor treatment device in corrugated base paper production according to claim 1, characterized in that, The inlet and outlet of the vacuum pump (3) are fixedly connected to the dust collector (5) and the drying box (2) respectively through pipes, and the gantry plate (8) is movably inserted into the dust collector (5).

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