Internode external circulation low-pressure nitrate smoke absorption tower device

Abstract

The invention relates to the technical field of nitrate smoke recovery of nitrate smoke absorption towers, and discloses an internode external circulation low-pressure nitrate smoke absorption tower device which comprises an absorption box, a corrugated sleeve is detachably installed on the lower end face of the absorption box located on the lower side, and a water storage tank is fixedly installed on the lower end face of the corrugated sleeve. A stuffing box is slidably mounted at the lower part of the side wall of the inner cavity of the absorption box, and the spraying mechanism is arranged at the upper side of the inner cavity of the absorption box; the dredging mechanism is arranged on the lower side of the inner cavity of the absorption box; the transmission mechanisms are arranged on the left side wall and the right side wall of the absorption box; and the material changing mechanism is arranged on the periphery of the side wall of the absorption box. Through the arrangement of the transmission mechanism, the spraying mechanism and the like, alkali is sprayed into the inner cavity of the absorption box, after cooperation with filler in the filler box, nitrate smoke can be purified, meanwhile, the dredging mechanism and the material changing mechanism are arranged, and it can be guaranteed that the filler in the filler box has the good purification and absorption effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nitric smoke absorption tower and recovery of nitric smoke, and particularly relates to an inter-node external circulation low-pressure nitric smoke absorption tower device. BACKGROUND

[0002] Every year, a large amount of waste gas containing high-concentration nitrogen oxides, commonly known as nitric smoke, is generated due to chemical processes such as nitration reaction, nitric acid oxidation reaction, decomposition of nitro compounds, synthesis of nitro compounds, production of nitric acid, and treatment of waste acid containing nitric acid. This nitric smoke gas is more harmful than ordinary flue gas containing a small amount of nitrogen oxides. In addition to directly harming the physical and mental health of nearby residents, it also causes considerable damage to the surrounding environment. It is one of the pollution gases that the world focuses on controlling.

[0003] According to the search, a nitric smoke absorption treatment device is provided in patent publication No. CN209475981U, which includes a nitric smoke absorption treatment tower. A nitric smoke absorption chamber is installed inside the nitric smoke absorption treatment tower. A water storage tank is installed below the inside of the nitric smoke absorption chamber. Filter plates are installed on both sides above the water storage tank. Filter cartridges are installed inside the filter plates. A packed absorption layer is installed above the water storage tank. A fixing frame is installed above the packed absorption layer.

[0004] In the above patent document, the second spray head on the water supply pipe and the first spray head below the fixing frame can spray alkaline water regionally to absorb nitrogen oxides in the nitric smoke, thereby realizing the function of absorbing and treating nitric smoke. However, in actual use, since the positions of the first spray head and the second spray head are fixed, the upper part of the water storage tank will be excessively wet when spraying, while the packed materials in other areas will be excessively dry. At this time, the absorption efficiency of the packed materials for nitric smoke will continuously decrease, thereby reducing the absorption efficiency of the entire device for nitric smoke. Therefore, there is an urgent need for an inter-node external circulation low-pressure nitric smoke absorption tower device to solve such problems. SUMMARY

[0005] Technical problems to be solved

[0006] The present application aims to provide an inter-node external circulation low-pressure nitric smoke absorption tower device to solve the problems raised in the background.

[0007] (II) Technical solutions

[0008] In order to achieve the above object, the present application provides the following technical scheme: an inter-node external circulation low-pressure smoke absorption tower device, comprising an absorption box, the absorption box is provided with three groups, and is sequentially distributed from top to bottom, the upper end surface of the upper absorption box is fixedly installed with a gas guide cover, the upper end surface of the gas guide cover is fixedly installed with a clean gas outlet, the lower end surface of the lower absorption box is detachably installed with a corrugated sleeve, the lower end surface of the corrugated sleeve is fixedly installed with a water storage tank, the inner cavity side wall of the absorption box is slidably installed with a filler box, and the device further comprises:

[0009] A spraying mechanism is arranged on the upper side of the inner cavity of the absorption box, and is used for spraying alkali water into the inner cavity of the absorption box.

[0010] A dredging mechanism is arranged on the lower side of the inner cavity of the absorption box, and is used for loosening the filler in the inner cavity of the filler box.

[0011] A transmission mechanism is arranged on the left and right side walls of the absorption box.

[0012] A material replacement mechanism is arranged around the side wall of the absorption box, and is used for separating the upper and lower absorption boxes.

[0013] Preferably, the spraying mechanism comprises a support plate fixedly installed on the left side wall of the inner cavity of the absorption box, and a connecting column rotatably installed between the front and rear support plates, the front and rear end surfaces of the connecting column are fixedly installed with rotating discs, the outer side wall outer end of the rotating disc is fixedly installed with a guide column, the outer side wall of the rotating disc is slidably installed with a guide plate, and the upper end surface of the guide plate is fixedly installed with a gear plate.

[0014] Preferably, a positioning screw is rotatably installed on the upper part of the side wall of the inner cavity of the absorption box, the thread directions of the left and right sides of the positioning screw are opposite, the thread part of the positioning screw is threadedly installed with a sliding sleeve, the side wall lower part of the sliding sleeve is fixedly installed with a rack plate, the lower end surface of the guide plate is fixedly installed with a spraying plate, three three-way pipes are fixedly installed on the left and right side walls of the three absorption boxes, and the three-way pipes are connected with the spraying plate through pipelines.

[0015] Preferably, the rack plate and the gear plate are always in meshing state, the side wall of the guide plate is provided with a guide groove, the guide column slides in the inner cavity of the guide groove, and the thread rise angle of the positioning screw is greater than the equivalent friction angle of the sliding sleeve.

[0016] Preferably, the dredging mechanism comprises a positioning column rotatably installed on the lower part of the inner side wall of the absorption box, and a transmission gear fixedly installed on the side wall of the positioning column, the outer side of the side wall of the positioning column is fixedly installed with a second pulley, the left and right ends of the side wall of the positioning screw are fixedly installed with first pulleys, and the first pulleys and the second pulley are drivingly connected through a belt.

[0017] Preferably, the lower part of the inner cavity side wall of the absorption tank is fixedly installed with a limiting plate, the lower part of the transmission gear is installed with a transmission rack, the limiting plate slides in the inner cavity of the transmission rack, the positioning plate is fixedly installed between the left and right transmission racks, the lower end face of the positioning plate is fixedly installed with a loose rod, the loose rod is conical, and the loose rod extends to the inner cavity of the filler tank.

[0018] Preferably, the transmission mechanism comprises a worm gear fixedly installed in the middle part of the connecting column side wall, and an extension rod rotatably installed in the inner cavity of the left and right side walls of the absorption tank, the left end face of the extension rod is fixedly installed with a worm, the worm is connected with the worm gear, the right end face of the extension rod is fixedly installed with a double pulley, the double pulleys located on the upper and lower sides are in transmission connection with the double pulley in the middle part through a belt, and the middle parts of the left and right side walls of the absorption tank are fixedly installed with a driving motor through the frame, and the driving motor is fixedly connected with the double pulley in the middle part.

[0019] Preferably, the refueling mechanism comprises a fixed lug plate fixedly installed around the side wall of the middle absorption tank, and a double-shaft motor fixedly installed in the inner cavity of the rear fixed lug plate through the frame, the output shaft end of the double-shaft motor is fixedly installed with a refueling screw rod, the thread directions of the refueling screw rods located on the upper and lower sides are opposite, the inner cavity of the front fixed lug plate of the middle absorption tank is fixedly installed with a limiting rod, and movable lug plates are fixedly installed around the side walls of the absorption tanks located on the upper and lower sides.

[0020] Preferably, the refueling screw rod is in threaded connection with the movable lug plates located on the upper and lower sides, the limiting rod is in sliding connection with the movable lug plates located on the upper and lower sides, support blocks are fixedly installed around the inner cavity side walls of the three absorption tanks and the corrugated sleeve, the filler tank is placed on the support blocks, and air holes are arranged on the inner cavity bottoms of the filler tanks.

[0021] Preferably, the left and right side walls of the water storage tank are fixedly installed with smoke conveying pipes at the upper parts, the front end face of the water storage tank is fixedly installed with a drain pipe at the lower part, a support seat is fixedly installed on the rear end face of the middle absorption tank, the bottom face of the support seat is flush with the water storage tank, and a visual window is arranged on the front end face of the absorption tank.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1、the invention, workers can be through the start of the drive motor operation, the double pulley located in the middle of the rotation, under the transmission effect of the belt, the double pulley on both sides can also be rotated, and at the same time drive the extension rod fixed at the end of the rotation, the extension rod can drive the worm rotation, worm can drive the connecting column to make the rotating disc on both sides of the rotation, the guide column will be in the guide plate on the inner cavity of the guide groove movement, with the rotating disc of the continuous rotation, gear plate can drive the rack plate to make the sliding sleeve on the sidewall of the positioning screw left and right sliding, at this time the guide plate will be with the axis of the rotating disc left and right reciprocating swing, since the spray plate is fixedly installed on the lower end surface of the guide plate, at this time the alkali water from the three-way pipe can be multi-angle sprayed on the filler box, realize the even spray of the filler, ensure the moisture content of each area of the filler, make the efficiency of the absorption and purification of the smoke always keep high, the sprayed alkali water can realize the effect of the smoke purification, the filler can be twice absorption of the smoke, to realize the complete purification of the smoke.

[0024] 2、the invention, since the thread angle of the positioning screw is greater than the equivalent friction angle of the sliding sleeve, at this time the positioning screw will constantly rotate, and drive the second pulley to rotate, under the transmission effect of the belt, the first pulley will drive the positioning column to make the transmission gear rotate, under the limiting constraint of the limiting plate to the transmission rack, at this time the transmission rack can drive the positioning plate to slide back and forth in the inner cavity of the absorption tank, the loose rod fixed on the lower end surface of the positioning plate will also move, at this time the loose rod can loosen the filler in the inner cavity of the filler box, avoid the excessive agglomeration of the filler, further ensure the quality of the absorption and purification of the smoke in the whole absorption tower. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the whole structure of the invention of the low-pressure smoke absorption tower device with external circulation between nodes.

[0026] Figure 2 It is a rear view of the whole structure of the invention of the low-pressure smoke absorption tower device with external circulation between nodes.

[0027] Figure 3 It is a front view of the whole structure of the invention of the low-pressure smoke absorption tower device with external circulation between nodes.

[0028] Figure 4 It is a sectional view of the absorption tank of the invention of the low-pressure smoke absorption tower device with external circulation between nodes.

[0029] Figure 5 It is a sectional view of the absorption tank of the invention of the low-pressure smoke absorption tower device with external circulation between nodes. Figure 4 It is an enlarged structure diagram of A area in the invention.

[0030] Figure 6It is a spraying mechanism display structure schematic view of the invention.

[0031] In the figure: 1, absorption box; 11, three-way pipe; 12, support seat; 2, gas guide cover; 21, clean gas outlet; 3, corrugated sleeve; 4, water storage tank; 41, smoke conveying pipe; 42, drain pipe; 5, filler box; 6, spraying mechanism; 61, support plate; 62, connecting column; 63, rotating disc; 64, guide column; 65, guide plate; 651, guide groove; 66, gear plate; 67, positioning screw; 68, sliding sleeve; 69, rack plate; 610, spraying plate; 7, dredging mechanism; 71, positioning column; 72, transmission gear; 73, second pulley; 74, first pulley; 75, limiting plate; 76, transmission rack; 77, positioning plate; 78, loosening rod; 8, transmission mechanism; 81, worm gear; 82, extension rod; 83, worm; 84, double pulley; 85, drive motor; 9, material replacement mechanism; 91, fixed lug plate; 92, double-shaft motor; 93, material replacement screw; 94, limiting rod; 95, movable lug plate; 96, support block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-6 The present application provides a kind of technical solutions of interval external circulation low-pressure smoke absorption tower device:

[0034] An interval external circulation low-pressure smoke absorption tower device, comprising an absorption box 1, the absorption box 1 is provided with 3 groups, and is sequentially distributed from top to bottom, the upper end surface of the absorption box 1 located at the upper side is fixedly installed with a gas guide cover 2, the upper end surface of the gas guide cover 2 is fixedly installed with a clean gas outlet 21 in the middle, the lower end surface of the absorption box 1 located at the lower side is detachably installed with a corrugated sleeve 3, the lower end surface of the corrugated sleeve 3 is fixedly installed with a water storage tank 4, the lower part of the inner cavity side wall of the absorption box 1 is slidably installed with a filler box 5, further comprising:

[0035] Spraying mechanism 6, the spraying mechanism 6 is arranged on the upper side of the inner cavity of the absorption box 1, and the spraying mechanism 6 is used to spray lye water to the inner cavity of the absorption box 1;

[0036] Dredging mechanism 7, the dredging mechanism 7 is arranged on the lower side of the inner cavity of the absorption box 1, and the dredging mechanism 7 is used to loosen the filler in the inner cavity of the filler box 5;

[0037] Transmission mechanism 8, the transmission mechanism 8 is arranged on the left and right side walls of the absorption box 1.

[0038] The refueling mechanism 9 is arranged around the side wall of the absorption tank 1, and is used for separating the upper and lower absorption tanks 1.

[0039] Further, the spraying mechanism 6 comprises a support plate 61 fixedly installed on the left side wall of the inner cavity of the absorption tank 1, and a connecting column 62 rotatably installed between the front and rear support plates 61, the front and rear end faces of the connecting column 62 are fixedly installed with rotating discs 63, the outer end of the outer side wall of the rotating disc 63 is fixedly installed with a guide column 64, the outer side wall of the rotating disc 63 is slidably installed with a guide plate 65, and the upper end face of the guide plate 65 is fixedly installed with a gear plate 66.

[0040] A positioning screw 67 is rotatably installed on the upper portion of the side wall of the inner cavity of the absorption tank 1, the thread directions of the left and right sides of the positioning screw 67 are opposite, the threaded portion of the positioning screw 67 is threadedly installed with a sliding sleeve 68, the side wall of the lower portion of the sliding sleeve 68 is fixedly installed with a rack plate 69, the lower end face of the guide plate 65 is fixedly installed with a spraying plate 610, and three-way pipes 11 are fixedly installed on the left and right side walls of the three absorption tanks 1, and the three-way pipes 11 are connected with the spraying plate 610 through pipelines.

[0041] The rack plate 69 and the gear plate 66 are always in meshing state, the side wall of the guide plate 65 is provided with a guide groove 651, the guide column 64 slides in the inner cavity of the guide groove 651, and the thread rise angle of the positioning screw 67 is greater than the equivalent friction angle of the sliding sleeve 68.

[0042] It should be noted that the worker can drive the driving motor 85 to operate, so that the double pulleys 84 located in the middle portion rotate, the upper and lower double pulleys 84 can also rotate under the transmission of the belt, and the extension rods 82 fixedly installed at the end portions of the double pulleys 84 also rotate, the extension rods 82 can drive the worm 83 to rotate, the worm 83 is in meshing connection with the worm wheel 81, at this time, the worm wheel 81 can drive the connecting column 62 to make the front and rear rotating discs 63 rotate, since the rack plate 69 and the gear plate 66 are always in meshing state, at this time, the guide column 64 will move in the inner cavity of the guide groove 651 of the guide plate 65, with the continuous rotation of the rotating disc 63, the gear plate 66 can drive the rack plate 69 to make the sliding sleeve 68 slide left and right on the side wall of the positioning screw 67, at this time, the guide plate 65 will swing left and right about the axis of the rotating disc 63, since the spraying plate 610 is fixedly installed on the lower end face of the guide plate 65, at this time, the lye pumped from the three-way pipes 11 can be sprayed on the filler tank 5 at multiple angles, so that the filler is uniformly sprayed, the wetness of the filler in each area is ensured, and the efficiency of the absorption and purification of the smoke is always kept high.

[0043] Further, the dredging mechanism 7 comprises a positioning column 71 rotatably installed at the lower part of the inner side wall of the absorption tank 1, and a transmission gear 72 fixedly installed on the side wall of the positioning column 71, the side wall of the positioning column 71 is fixedly installed with a second pulley 73, and the side wall of the positioning screw 67 is fixedly installed with a first pulley 74, and the first pulley 74 and the second pulley 73 are connected through a belt transmission;

[0044] A limiting plate 75 is fixedly installed at the lower part of the inner side wall of the absorption tank 1, a transmission rack 76 is meshingly installed below the transmission gear 72, the limiting plate 75 slides in the inner cavity of the transmission rack 76, a positioning plate 77 is fixedly installed between the left and right transmission racks 76, a loosening rod 78 is fixedly installed at the lower end face of the positioning plate 77, the loosening rod 78 is tapered, and the loosening rod 78 extends into the inner cavity of the filler tank 5.

[0045] It should be noted that since the thread angle of the positioning screw 67 is greater than the equivalent friction angle of the sliding sleeve 68, the rack plate 69 and the gear plate 66 are always in meshing state, at this time the positioning screw 67 will continuously rotate and drive the second pulley 74 to rotate, under the transmission of the belt, the first pulley 73 will drive the positioning column 71 to make the transmission gear 72 rotate, through the meshing connection of the transmission gear 72 and the transmission rack 76, under the limiting constraint of the limiting plate 75 to the transmission rack 76, at this time the transmission rack 76 can drive the positioning plate 77 to slide back and forth in the inner cavity of the absorption tank 1, the loosening rod 78 fixedly installed at the lower end face of the positioning plate 77 will also move, and the loosening rod 78 extends into the inner cavity of the filler tank 5, at this time the loosening rod 78 can loosen the filler in the inner cavity of the filler tank 5, avoiding excessive agglomeration of the filler, and further ensuring the quality of the absorption and purification of the entire absorption tower to the smoke.

[0046] Further, the transmission mechanism 8 comprises a worm wheel 81 fixedly installed at the middle part of the side wall of the connecting column 62, and an extension rod 82 rotatably installed in the inner cavity of the left and right side walls of the absorption tank 1, the left end face of the extension rod 82 is fixedly installed with a worm gear 83, the worm gear 83 is meshingly connected with the worm wheel 81, the right end face of the extension rod 82 is fixedly installed with a double pulley 84, the double pulleys 84 located on the upper and lower sides are connected with the double pulley 84 in the middle through a belt transmission, and the left and right side walls of the middle part of the absorption tank 1 are fixedly installed with a driving motor 85 through a rack, and the driving motor 85 is fixedly connected with the double pulley 84 in the middle.

[0047] Further, the refueling mechanism 9 comprises a fixed lug plate 91 fixedly installed around the side wall of the middle absorption tank 1, and a double-shaft motor 92 fixedly installed in the inner cavity of the rear fixed lug plate 91, and the output shaft end of the double-shaft motor 92 is fixedly installed with a refueling screw rod 93, the thread directions of the refueling screw rods 93 on the upper and lower sides are opposite, the inner cavity of the front fixed lug plate 91 of the middle absorption tank 1 is fixedly installed with a limiting rod 94, and the movable lug plates 95 are fixedly installed around the side wall of the absorption tank 1 on the upper and lower sides;

[0048] The refueling screw rod 93 is threadedly connected with the movable lug plates 95 on the upper and lower sides, the limiting rod 94 is slidably connected with the movable lug plates 95 on the upper and lower sides, the inner cavities of the three absorption tanks 1 and the corrugated sleeve 3 are fixedly installed with support blocks 96, and the filler boxes 5 are placed on the support blocks 96.

[0049] It should be noted that the worker can drive the double-shaft motor 92 to rotate, so as to drive the refueling screw rod 93 to rotate, and the movable lug plates 95 are threadedly connected with the refueling screw rod 93, so that the movable lug plates 95 can slide up and down on the side wall of the refueling screw rod 93 under the limiting constraint of the limiting rod 94, and as the movable lug plates 95 on the upper and lower sides are continuously away from each other, the absorption tanks 1 on the upper and lower sides are also separated from the middle absorption tank 1, so that the worker can take down the filler box 5 from the support block 96, so as to quickly replace the filler in the filler box 5, and the working efficiency of the worker is greatly improved.

[0050] Further, the left and right side walls of the water storage tank 4 are fixedly installed with smoke conveying pipes 41, the front end surface of the water storage tank 4 is fixedly installed with a drain pipe 42, the rear end surface of the middle absorption tank 1 is fixedly installed with a support seat 12, the bottom surface of the support seat 12 is flush with the water storage tank 4, and the front end surface of the absorption tank 1 is provided with a visual window.

[0051] It should be noted that the worker can observe the inner cavity of the absorption tank 1 in real time through the visual window, so as to make timely emergency measures.

[0052] Working principle:

[0053] Before work, the worker connects the smoke conveying pipe 41 with the smoke generating device through the flange, and connects the tee pipe 11 with the external water pump, so as to pump alkali water into the tee pipe 11.

[0054] When the worker starts the driving motor 85 to run, the double pulley 84 in the middle part rotates, and the double pulley 84 on the upper and lower sides also rotates under the transmission of the belt, and the extension rod 82 fixed at the end of the double pulley 84 also rotates, and the worm 83 rotates under the driving of the extension rod 82, and the worm wheel 81 rotates under the meshing connection of the worm 83 and the worm wheel 81, and the connecting column 62 rotates under the driving of the worm wheel 81, and the rotating disc 63 on the front and back sides rotates under the driving of the connecting column 62, and the rack plate 69 and the gear plate 66 are always in meshing state, and the guide column 64 moves in the inner cavity of the guiding groove 651 of the guide plate 65, and the gear plate 66 drives the rack plate 69 to make the sliding sleeve 68 slide left and right on the side wall of the positioning screw 67 under the continuous rotation of the rotating disc 63, and the guide plate 65 swings left and right around the axis of the rotating disc 63, and the alkali water pumped from the three-way pipe 11 can be sprayed on the filler box 5 at multiple angles, so that the filler is evenly sprayed, the wetness of the filler in each area is ensured, the efficiency of the absorption and purification of the smoke is always high, and the alkali water can preliminarily realize the effect of purifying the smoke, and the filler can absorb the smoke for the second time to realize the complete purification of the smoke.

[0055] When the sliding sleeve 68 slides on the side wall of the positioning screw 67, the rack plate 69 and the gear plate 66 are always in meshing state because the thread angle of the positioning screw 67 is greater than the equivalent friction angle of the sliding sleeve 68, the positioning screw 67 rotates continuously and drives the second pulley 74 to rotate, the first pulley 73 drives the positioning column 71 to make the transmission gear 72 rotate under the transmission of the belt, the transmission gear 72 and the transmission rack 76 are meshed and connected, the transmission rack 76 drives the positioning plate 77 to slide back and forth in the inner cavity of the absorption tank 1 under the limiting and restraining of the limiting plate 75, and the loose rod 78 fixed to the lower end face of the positioning plate 77 also moves, and the loose rod 78 extends to the inner cavity of the filler box 5, so that the loose rod 78 can loosen the filler in the inner cavity of the filler box 5, and the filler is prevented from being excessively agglomerated, and the quality of the absorption and purification of the smoke by the whole absorption tower is further ensured.

[0056] When the filler in the filler box 5 is used for a period of time, the worker can start the double-shaft motor 92 to run, and drive the material replacing screw 93 to rotate, and the movable lug plate 95 is threadedly connected with the material replacing screw 93, and the movable lug plate 95 slides up and down on the side wall of the material replacing screw 93 under the limiting and restraining of the limiting rod 94, and the upper and lower absorption tanks 1 are separated from the middle absorption tank 1 as the upper and lower movable lug plates 95 continuously move away from each other, and the worker can take the filler box 5 from the supporting block 96, so that the worker can quickly replace the filler in the filler box 5, and the working efficiency of the worker is greatly improved.

[0057] It should be pointed out finally that the above is only used to explain the technical solutions of the present application, and is not a limitation on the protection scope of the present application, and simple modifications or equivalent replacements of the technical solutions of the present application by those skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. A segmental external circulation low-pressure nitrous oxide absorption tower device, comprising an absorption box (1), characterized in that, The absorption box (1) is provided in three sets, arranged from top to bottom. The upper end face of the absorption box (1) located on the upper side is fixedly installed with a gas guide hood (2), and a clean gas outlet (21) is fixedly installed in the middle of the upper end face of the gas guide hood (2). The lower end face of the absorption box (1) located on the lower side is detachably installed with a corrugated sleeve (3), and a water storage tank (4) is fixedly installed in the lower end face of the corrugated sleeve (3). A packing box (5) is slidably installed in the lower part of the inner cavity side wall of the absorption box (1). It also includes: A spraying mechanism (6) is provided on the upper side of the inner cavity of the absorption box (1). The spraying mechanism (6) is used to spray alkaline water into the inner cavity of the absorption box (1). The unblocking mechanism (7) is located on the lower side of the inner cavity of the absorption box (1) and is used to loosen the packing in the inner cavity of the packing box (5). Transmission mechanism (8), the transmission mechanism (8) is disposed on the left and right side walls of the absorption box (1); Material changing mechanism (9) is arranged around the side wall of the absorption box (1). The material changing mechanism (9) is used to separate the upper and lower absorption boxes (1).

2. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 1, characterized in that: The spraying mechanism (6) includes a support plate (61) fixedly installed on the left side wall of the inner cavity of the absorption box (1), and a connecting column (62) rotatably installed between the front and rear support plates (61). A rotating disk (63) is fixedly installed on the front and rear end faces of the connecting column (62). A guide column (64) is fixedly installed on the outer end of the outer side wall of the rotating disk (63). A guide plate (65) is slidably installed on the outer side wall of the rotating disk (63). A gear plate (66) is fixedly installed on the upper end face of the guide plate (65).

3. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 2, characterized in that: A positioning screw (67) is rotatably installed on the upper part of the inner cavity side wall of the absorption box (1). The left and right sides of the positioning screw (67) have opposite thread directions. A sliding sleeve (68) is threaded on the threaded part of the positioning screw (67). A rack plate (69) is fixedly installed on the lower part of the side wall of the sliding sleeve (68). A spray plate (610) is fixedly installed on the lower end face of the guide plate (65). A three-way pipe (11) is fixedly installed on the left and right side walls of the three absorption boxes (1). The three-way pipe (11) is connected to the spray plate (610) through a pipe.

4. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 3, characterized in that: The rack plate (69) and the gear plate (66) are always in a meshing state. The guide plate (65) has a guide groove (651) on its side wall. The guide post (64) slides in the inner cavity of the guide groove (651). The thread helix angle of the positioning screw (67) is greater than the equivalent friction angle of the sliding sleeve (68).

5. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 3, characterized in that: The unblocking mechanism (7) includes a positioning column (71) rotatably installed on the lower part of the inner side wall of the absorption box (1), and a transmission gear (72) fixedly installed on the side wall of the positioning column (71). A second pulley (73) is fixedly installed on the outer side wall of the positioning column (71), and a first pulley (74) is fixedly installed at both ends of the side wall of the positioning screw (67). The first pulley (74) and the second pulley (73) are connected by belt drive.

6. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 5, characterized in that: A limiting plate (75) is fixedly installed on the lower part of the inner cavity side wall of the absorption box (1). A transmission rack (76) is meshed below the transmission gear (72). The limiting plate (75) slides in the inner cavity of the transmission rack (76). A positioning plate (77) is fixedly installed between the transmission racks (76) on the left and right sides. A loosening rod (78) is fixedly installed on the lower end face of the positioning plate (77). The loosening rod (78) is tapered and extends into the inner cavity of the filling box (5).

7. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 2, characterized in that: The transmission mechanism (8) includes a worm gear (81) fixedly installed in the middle of the side wall of the connecting column (62) and an extension rod (82) rotatably installed in the inner cavity of the left and right side walls of the absorption box (1). A worm (83) is fixedly installed on the left end face of the extension rod (82), and the worm (83) meshes with the worm gear (81). A double pulley (84) is fixedly installed on the right end face of the extension rod (82). The double pulleys (84) located on the upper and lower sides are connected to the double pulley (84) in the middle through belts. A drive motor (85) is fixedly installed in the middle of the left and right side walls of the absorption box (1) through a frame. The drive motor (85) is fixedly connected to the double pulley (84) in the middle.

8. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 1, characterized in that: The material changing mechanism (9) includes fixed ear plates (91) fixedly installed around the side wall of the middle absorption box (1), and a dual-axis motor (92) fixedly installed in the inner cavity of the rear fixed ear plate (91) via a frame. The output shaft end of the dual-axis motor (92) is fixedly installed with a material changing screw (93). The thread directions of the material changing screw (93) on the upper and lower sides are opposite. A limit bar (94) is fixedly installed in the inner cavity of the front fixed ear plate (91) of the middle absorption box (1), and movable ear plates (95) are fixedly installed around the side wall of the absorption box (1) on the upper and lower sides.

9. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 8, characterized in that: The material changing screw (93) is threadedly connected to the upper and lower movable ear plates (95), the limiting rod (94) is slidably connected to the upper and lower movable ear plates (95), and the three absorption boxes (1) and the corrugated sleeve (3) are all fixedly installed with support blocks (96) around the inner cavity sidewalls. The packing box (5) is placed on the support block (96), and the bottom of the inner cavity of the packing box (5) is provided with a vent hole.

10. The inter-segment external circulation low-pressure nitrile smoke absorption tower device according to claim 1, characterized in that: The upper part of the left and right side walls of the water storage tank (4) is fixedly installed with a smoke delivery pipe (41), the lower part of the front end face of the water storage tank (4) is fixedly installed with a drain pipe (42), the rear end face of the absorption box (1) located in the middle is fixedly installed with a support base (12), the bottom surface of the support base (12) is flush with the water storage tank (4), and the front end face of the absorption box (1) is provided with a viewing window.

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