Pretreatment device for tobacco plant residue composting

Abstract

The pretreatment device comprises a box body, a hanging basket, a lye tank and an acid neutralization tank, wherein the hanging basket is transversely and movably arranged at the upper part of the box body and is used for containing tobacco plant residue particles; the lye tank is arranged below the hanging basket; the acid neutralization tank is arranged at the downstream of the lye tank along the moving direction of the hanging basket; the lye tank and the acid neutralization tank are respectively arranged on a bracket in the box body in a lifting manner; a liquid collecting tank capable of moving back and forth is arranged on the bracket of the acid neutralization tank, and is positioned between the hanging basket and the acid neutralization tank in the horizontal direction. By arranging the lye tank, tobacco plant residue particles are soaked in lye, cell walls of tobacco straws are deconstructed, and a natural macromolecular structure of lignin is reserved, so that tobacco plant residues are easier to compost and decompose; the acid neutralization tank is used for neutralizing alkali liquor, the pH value of biomass is adjusted to be neutral, and a microbial agent can be conveniently added into treated tobacco plant residue particles subsequently, so that decomposition of tobacco plant residues and conversion of nicotine are accelerated.

Description

Technical Field

[0001] This utility model relates to the field of agricultural technology, and in particular to a device for pretreatment of plant compost. Background Technology

[0002] Tobacco cultivation is widespread in my country, and tobacco plant residues, including stalks, bottom leaves, stalks, and forks, account for approximately 25% of the total tobacco production, generating over one million tons of residues annually. These residues are rich in nitrogen, phosphorus, potassium, and trace elements, and contain an average nicotine content of 0.4-2.0%, making them highly volatile plant-derived natural insecticides. They can be used not only to control pests and diseases in tobacco fields but also for pest and disease control in broader agriculture, such as controlling aphids, scale insects, leaf miners, thrips, and cabbage white butterfly larvae on vegetables and fruit trees, as well as planthoppers and spider mites on cotton and citrus.

[0003] Composting tobacco plant residues produces organic fertilizer that effectively improves soil structure, enhances fertilizer utilization, and increases disease resistance, which is crucial for promoting the sustainable development of tobacco production. Current research has yielded some progress in understanding the changes in physicochemical properties during composting, the formulation of microbial agents, and the decomposition-promoting effects of manure and microbial agents on tobacco waste. However, due to the high lignin content in tobacco plant residues, the problem of difficult decomposition of tobacco stalks remains.

[0004] Chinese utility model patent CN221588385U, published on August 23, 2024, discloses a tobacco residue composting fermentation device, including a fermentation tank. A stirring assembly and a separation baffle are rotatably mounted inside the fermentation tank. A discharge assembly is located at the bottom of the fermentation tank. The separation baffle includes a fixed baffle and a movable baffle. The fixed baffle is fixedly connected to the fermentation tank, and the movable baffle is detachably connected to the stirring assembly. The beneficial effects of this utility model are: when the movable baffle is disconnected from the stirring assembly, the separation baffle will not interfere with the rotation of the stirring assembly; when the movable baffle is connected to the stirring assembly, the stirring assembly can drive the movable baffle to rotate, moving it to a position coinciding with the fixed baffle, thereby opening or closing the separation baffle. However, the above patent cannot solve the problem of the difficulty in decomposing tobacco stalks. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model proposes a pretreatment device for tobacco residue composting, which solves the problem of tobacco stalks being difficult to decompose in existing composting methods.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A pretreatment device for tobacco residue composting includes a box, a basket laterally movable on the upper part of the box for holding tobacco residue particles, an alkali tank located below the basket, and an acid neutralization tank located downstream of the alkali tank along the direction of basket movement. The alkali tank and acid neutralization tank are respectively mounted on supports within the box. A collection tank that moves back and forth on the support of the acid neutralization tank is located horizontally between the basket and the acid neutralization tank. This invention uses the alkali tank to soak the tobacco residue particles in alkali solution, breaking down the cell walls of the tobacco straw while preserving the natural macromolecular structure of lignin, making the tobacco residue easier to compost. The acid neutralization tank neutralizes the alkali solution, adjusting the pH of the biomass to neutral, facilitating the subsequent addition of microbial agents to the treated tobacco residue particles, thereby accelerating the decomposition of the tobacco residue and the conversion of nicotine. The collection tank collects the solution drained from the basket, facilitating solution collection and treatment.

[0008] Furthermore, the alkali tank includes a primary alkali tank and a secondary alkali tank, and the acid neutralization tank includes a primary neutralization tank and a secondary neutralization tank, with the primary alkali tank, the primary neutralization tank, the secondary alkali tank and the secondary neutralization tank arranged sequentially.

[0009] Furthermore, the supports of the primary neutralization tank, the secondary alkali tank, and the secondary neutralization tank are all equipped with a liquid collection tank that moves back and forth. The bottom of the liquid collection tank is sloped, and an outlet is located at the position where the slope of the bottom of the liquid collection tank is the lowest.

[0010] Furthermore, the support is provided with a lifting drive mechanism for driving the alkali tank and / or acid neutralization tank to rise and fall. The lifting drive mechanism includes a vertical lead screw that is vertically and rotatably arranged on both sides of the support and a first rotating motor connected to the lower end of the vertical lead screw. Lifting sliding blocks that mesh with the vertical lead screw are provided on both sides of the alkali tank and / or acid neutralization tank. The first rotating motor is fixed to the bottom of the tank.

[0011] Furthermore, the supports of the primary neutralization tank, the secondary alkali tank, and the secondary neutralization tank are equipped with a moving drive mechanism for driving the collection tank to move back and forth; the moving drive mechanism includes a horizontal lead screw set at the upper end of both sides of the support and a second rotating motor connected to one end of the horizontal lead screw, the second rotating motor being fixed to the top of the corresponding support; and the horizontal lead screw passes through a bearing seat set at the top of the corresponding support and is rotatably connected to the bearing seat; horizontal sliding blocks that mesh with the horizontal lead screw are provided on both sides of the collection tank.

[0012] Furthermore, a cleaning water tank is also provided downstream of the secondary neutralization tank inside the box.

[0013] Furthermore, the bottom of the alkali tank is provided with a gas inlet, which is connected to an oxygen supply machine or an air compressor through a pipe; the upper side of the alkali tank and the acid neutralization tank is provided with an exhaust port, which is connected to an exhaust pump through a pipe to suck away the waste gas.

[0014] Furthermore, the sides of the alkali tank and the acid neutralization tank are equipped with level alarms; the alkali tank is equipped with a heating mechanism for heating the alkali solution.

[0015] Furthermore, the top of the container is provided with a hook and a conveying mechanism for driving the hook over the alkali tank and the acid neutralization tank; and the top of the basket is hinged with a handle for hanging on the hook.

[0016] Furthermore, the inner wall of the basket is provided with protrusions to support the pressure plate and prevent tobacco residue particles from floating.

[0017] Furthermore, the two ends of the box are provided with lifting and opening doors.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model uses an alkaline solution tank to soak tobacco plant residue particles in alkaline solution, which deconstructs the cell walls of tobacco straw, preserves the natural macromolecular structure of lignin, and makes tobacco plant residue easier to compost and decompose.

[0020] 2. This utility model, by setting up a multi-stage alkaline tank, gradually reduces the alkaline dosage, gradually deconstructs the cell walls of tobacco straw, further promotes the natural macromolecular structure of lignin, and further makes the tobacco residue easier to compost and decompose.

[0021] 3. This utility model sets up an acid neutralization tank to neutralize the alkaline solution, adjusting the pH value of the biomass to neutral, which facilitates the subsequent addition of microbial agents to the treated tobacco residue particles, thereby accelerating the decomposition of tobacco residue and the conversion of nicotine.

[0022] 4. This utility model provides a gas inlet to the alkali solution tank to add oxygen or air. The combined action of the oxygen or air with the alkali solution can further disrupt the cell wall structure, making the cellulose fibers more exposed and further improving the biodegradability of tobacco residues.

[0023] 5. This utility model incorporates a collection tank to collect the alkali solution dripping from tobacco residue particles soaked in alkali solution, facilitating unified collection. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 for Figure 1 A top view of the structure of AA.

[0027] In the diagram: 1. Suspended basket; 101. Handle; 2. Primary alkali tank; 3. Collection tank; 31. Outlet; 4. Primary neutralization tank; 5. Secondary alkali tank; 6. Secondary neutralization tank; 7. Vertical screw; 8. Door panel; 9. Gas inlet; 10. Exhaust port; 11. Hook; 12. Pressure plate; 13. Cleaning water tank; 14. Horizontal screw. Detailed Implementation

[0028] 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.

[0029] like Figure 1 As shown in Embodiment 1 of this utility model, a pretreatment device for tobacco residue composting is used to pretreat pulverized tobacco residue. The pretreatment device includes a box, a basket 1 laterally movable above the box for holding tobacco residue particles, an alkali tank located below the basket 1, and an acid neutralization tank located downstream of the alkali tank along the moving direction of the basket 1. The box contains a conveying mechanism that drives the basket 1 to move; the basket 1 is detachably connected to the conveying mechanism for easy loading and unloading of tobacco residue particles. The alkali tank and acid neutralization tank are respectively mounted on supports within the box; and the support of the acid neutralization tank has a back-and-forth movable collection tank 3, which is horizontally located between the basket 1 and the acid neutralization tank. The box or support is equipped with a lifting drive mechanism for driving the alkali tank and acid neutralization tank to move up and down.

[0030] In this embodiment, as Figure 1As shown, the alkali solution tank includes a primary alkali solution tank 2 and a secondary alkali solution tank 5, and the acid neutralization tank includes a primary neutralization tank 4 and a secondary neutralization tank 6. The primary alkali solution tank 2, primary neutralization tank 4, secondary alkali solution tank 5, and secondary neutralization tank 6 are arranged sequentially along the lateral movement direction of the suspended basket. Each of the primary neutralization tank 4, secondary alkali solution tank 5, and secondary neutralization tank 6 has a back-and-forth moving collection tank 3 on its support. The movement direction of the collection tank 3 is perpendicular to the lateral movement direction of the suspended basket, allowing the collection tank 3 to move to directly below the corresponding upper suspended basket, or to move backward to offset from the suspended basket, enabling the alkali solution tank or acid neutralization tank to rise and perform alkali soaking or acid neutralization on the material in the suspended basket. Each of the primary neutralization tank 4, secondary alkali solution tank 5, and secondary neutralization tank 6 has a moving drive mechanism for driving the collection tank 3 to move back and forth.

[0031] The primary alkali tank 2 and the secondary alkali tank 5 contain medium-concentration and low-concentration alkali solutions, respectively, which can be sodium hydroxide. In this embodiment, the medium-concentration alkali solution uses a solution containing 10%~20% sodium hydroxide (NaOH); the low-concentration alkali solution uses a solution containing 3%~5% sodium hydroxide (NaOH). The primary neutralization tank 4 and the secondary neutralization tank 6 contain acidic solutions, such as dilute hydrochloric acid. The concentration of the acidic solution is adjusted as needed to adjust the pH value of the tobacco residue particles soaked in the primary alkali tank 2 and the tobacco residue particles soaked in the secondary alkali tank 5 to neutral.

[0032] Furthermore, both the primary alkali tank 2 and the secondary alkali tank 5 are equipped with heating mechanisms for heating the alkali solution. These heating mechanisms utilize existing technology, where electric heating wires are installed at the bottom and / or sidewalls of both tanks and electrically connected to a power source. The circuits include a connected temperature controller and a temperature sensor, with the temperature sensor positioned on the sidewall of the alkali tank. This temperature sensor, in conjunction with the temperature controller, monitors and regulates the liquid temperature within the alkali tank. In this embodiment, the heating temperature of the primary alkali tank 2 is 50-60°C, and the alkali soaking time is 1-2 hours. The heating temperature of the secondary alkali tank 5 is 40-50°C, and the alkali soaking time is 0.5-1 hour.

[0033] In another preferred embodiment, a three-stage alkali tank and a three-stage neutralization tank are provided as needed, and the three-stage alkali tank and the three-stage neutralization tank are sequentially arranged downstream of the two-stage neutralization tank 6. The structure of the three-stage alkali tank is the same as that of the two-stage alkali tank, and the structure of the three-stage neutralization tank is the same as that of the two-stage neutralization tank. Furthermore, the first-stage alkali tank 2, the second-stage alkali tank 5, and the third-stage alkali tank are each filled with alkali solutions of different concentrations, with the concentrations decreasing from high to low; the concentrations of the acidic solutions in the first-stage neutralization tank 4, the second-stage neutralization tank 6, and the third-stage neutralization tank can also be adjusted as needed.

[0034] Example 2 differs from Example 1 in that, as Figure 1As shown, the bottom of the alkali solution tank, specifically the bottom of the primary alkali solution tank 2 and the secondary alkali solution tank 5, is equipped with a gas inlet 9. The gas inlet 9 is connected to an oxygen supply machine or an air compressor via a pipe. The oxygen supply machine or air compressor adopts a structure from the prior art. The pipe is equipped with a one-way valve, ensuring that only gas enters the gas inlet 9, preventing liquid from entering the oxygen supply machine or air compressor. During the soaking process, oxygen or air is continuously supplied to the primary alkali solution tank 2 and the secondary alkali solution tank 5 through the gas inlet 9 via the oxygen supply machine or air compressor. This further disrupts the cell wall structure, exposing more cellulose fibers and further improving the biodegradability of the tobacco residue.

[0035] like Figure 1 As shown, an exhaust port 10 is provided on the upper side of the alkali tank and acid neutralization tank, specifically on the side near the top of the primary alkali tank 2, secondary alkali tank 5, primary neutralization tank 4, and secondary neutralization tank 6. This position is higher than the liquid level in the alkali tank and acid neutralization tank. The exhaust port 10 is connected to an exhaust pump via a pipe to remove waste gas. The other end of the exhaust pump is connected to a prior art waste gas treatment system to prevent direct emission into the atmosphere.

[0036] Furthermore, the sides of the alkali tank and acid neutralization tank are equipped with liquid level alarms to limit the liquid in the alkali tank and acid neutralization tank from exceeding the maximum liquid level. The maximum liquid level is at least 10cm away from the lower edge of the exhaust port 10, and the exhaust port 10 is set to tilt upward, that is, the exhaust port gradually tilts upward from the opening to prevent the liquid from being drawn away by the exhaust pump; the highest point of the exhaust port does not exceed the upper edge of the respective alkali tank or acid neutralization tank.

[0037] Example 3 differs from Example 2 in that, as Figure 1 As shown, the support is equipped with a lifting drive mechanism for driving the alkali tank and / or acid neutralization tank to rise and fall. In this embodiment, the support includes portal frames respectively disposed at the left and right ends of the alkali tank and acid neutralization tank, with the lower ends of the portal frames fixed to the bottom of the tank body. The lifting drive mechanism includes vertical lead rods 7 vertically and rotatably disposed on both sides of the support and a first rotary motor connected to the lower end of the vertical lead rods 7. That is, vertical lead rods 7 are inserted through the front and rear sides of the portal frames at the left and right ends of each alkali tank and each acid neutralization tank, and the vertical lead rods 7 are rotatably connected to the portal frames. The first rotary motor is fixed to the bottom of the tank body and is respectively connected to the lower end of the corresponding vertical lead rods 7 to drive the rotation of the vertical lead rods 7. Lifting sliding blocks that mesh with the corresponding vertical lead rods 7 are connected to the left and right sides of the alkali tank and acid neutralization tank. By driving the vertical lead rods 7 to rotate through the first rotary motor, the alkali tank or acid neutralization tank moves up and down under the action of the lifting sliding blocks meshing with the vertical lead rods 7.

[0038] Example 4 differs from Example 3 in that, as Figure 1 and Figure 2As shown, the moving drive mechanism includes a horizontal lead screw 14 disposed on the upper ends of both sides of the support and a second rotating motor connected to one end of the horizontal lead screw 14. The second rotating motor is fixed to the top of the corresponding support. The horizontal lead screw 14 passes through a bearing seat disposed on the top of the corresponding support and is rotatably connected to the bearing seat. That is, bearing seats are provided at the front and rear positions of the upper ends of the portal frames at both ends of the primary neutralization tank 4, the secondary alkali tank 5, and the secondary neutralization tank 6 for the horizontal lead screw 14 to pass through, and the horizontal lead screw 14 is rotatably connected to the bearing seat through the bearing. The second rotating motor is connected to one end of the horizontal lead screw 14 and is fixed to the upper end of the portal frame. Horizontal sliding blocks that mesh with the horizontal lead screw 14 are provided on both sides of the liquid collection tank 3. The horizontal lead screw 14 is driven to rotate by the second rotating motor, and the horizontal sliding blocks meshing with the horizontal lead screw 14 cause the tank to move back and forth.

[0039] like Figure 1 As shown, the bottom of the collection tank 3 is sloped, and an outlet 31 is located at the lowest point of the slope. This facilitates the return of the solution drained from the basket collected in the collection tank 3.

[0040] Example 5 differs from Example 4 in that, as Figure 1 As shown, the top of the container is equipped with a hook 11 and a conveying mechanism for driving the hook 11 to pass sequentially above the primary alkali tank 2, the primary neutralization tank 4, the secondary alkali tank 5, and the secondary neutralization tank 6. This conveying mechanism adopts a structure found in the prior art. In one embodiment, a steel cable is connected to the upper end of the hook, and the steel cable moves laterally along the direction of movement of the basket, or the two ends of the steel cable are connected to form an elongated loop for cyclical movement. A space is provided at the top of the container for the steel cable to move, and this space contains a friction wheel that fits against the steel cable and a motor for driving the friction wheel to rotate. The motor drives the rotation of the friction wheel, causing the friction wheel to move the steel cable using friction. A tensioning wheel, as used in the prior art, can also be provided to tension the steel cable. A guide wheel or pulley is provided on the inner side of the elongated loop, and grooves are provided on the rotating surfaces of the guide wheel or pulley and the friction wheel. The steel cable passes around the guide wheel or pulley to the outward side and engages with the grooves. Friction wheels can be symmetrically arranged on both sides of the steel cable. Because the tobacco residue particles in each basket need to remain in the alkaline or acid-neutralized solution for a certain period of time, the conveying mechanism intermittently moves the hook and the basket on it. When not moving, the alkaline or acid-neutralized solution tank rises to soak the tobacco residue particles; after soaking, the conveying mechanism moves the hook and the basket on it to the next tank or removes it from the container.

[0041] Furthermore, the top of the suspended platform 1 is hinged with handles for hanging on hooks 11. Specifically, there is a handle on each of the front and rear sides of the upper edge of the suspended platform 1, and the two handles on a single suspended platform 1 are symmetrically arranged. The lower ends of the two handles are hinged to the upper edge of the suspended platform 1, allowing the two handles to be closed and opened. Each handle has symmetrical, upward-facing recesses for engaging with the two hooks 11. The recesses of the two handles on each suspended platform are aligned one-to-one, and the platform is simultaneously hung on the hooks 11, allowing the suspended platform 1 to be hung stably and balanced.

[0042] Example 6 differs from Example 1 in that, as Figure 1 As shown, at least three protrusions are provided on the upper sides of both sides of the inner wall of the basket 1 to support the pressure plate 12. After the basket 1 is filled with tobacco residue particles, the pressure plate 12 is placed on top to prevent the tobacco residue particles from floating when they rise in the alkali tank and acid neutralization tank. The pressure plate 12 is positioned inside the basket below the liquid levels in the alkali tank and acid neutralization tank.

[0043] Example 7 differs from Example 5 in that, as Figure 1 As shown, the box body has lifting and opening doors 8 at both ends. The conveying mechanism is located inside the top of the box body, and the top and bottom ends of the box body extend outwards to facilitate the conveying mechanism entering and exiting the box body from one end, driving the basket in and out of the box body. The upper parts of both ends of the box body have inlets and outlets for the basket and hook to enter and exit. Lifting doors 8 are provided on the inlets and outlets respectively. Because the conveying mechanism intermittently drives the hook and the basket on it to move, when the conveying mechanism is not moving, the doors 8 rise and close the inlets and outlets on the side plates at both ends of the box body. Since the conveying mechanism is located inside the top of the box body, the doors do not interfere with the conveying mechanism. The box body has door drive mechanisms at both ends to drive the doors 8 to rise and fall. Rotating vertical screws are provided on both sides of the inlets and outlets of the box body. The upper and lower ends of the vertical screws are rotatably connected to bearing seats provided on the side plates or the bottom of the box body via bearings. Sliding blocks that mesh with the vertical screws are provided on both sides of the doors 8. A rotating motor is provided at the bottom of the box body to drive the vertical screws to rotate, causing the doors 8 to rise and fall.

[0044] Example 8 differs from Example 7 in that the usage process of the device of this utility model is as follows:

[0045] (1) The crushed tobacco residue particles are loaded into the basket, a pressure plate is placed in the basket, and then the basket is hung on the hook. The door panel 8 descends, and the conveying mechanism drives the basket to move.

[0046] (2) When the basket moves above the primary alkali tank 2, the conveying mechanism stops. The door panel 8 rises to close the inlet and outlet. The primary alkali tank 2 rises under the drive of the lifting mechanism, so that the tobacco residue particles in the basket are soaked in the alkali solution (in the early stage of soaking in the primary alkali tank 2, the primary neutralization tank 4, the secondary alkali tank and the secondary neutralization tank 6 are all in the low position of the support). In this embodiment, the soaking time in the primary alkali tank 2 is 1-2 hours, and the heating mechanism of the primary alkali tank 2 heats the temperature to 50-60℃. (The heating mechanism can be turned on to preheat and raise the temperature of the alkali solution before the alkali tank 2 rises for soaking).

[0047] (3) After the soaking time is up, the first-stage alkali tank 2 descends and the door panel 8 descends.

[0048] (4) The collection tank corresponding to the primary neutralization tank 4 moves forward to directly above the primary neutralization tank 4 under the action of the moving drive mechanism to facilitate the collection of the solution drained from the basket after being soaked in the primary alkali tank 2. The conveying mechanism moves to move the basket after being soaked in the primary alkali tank 2 to above the primary neutralization tank 4, so that the drained solution enters the collection tank on the primary neutralization tank 4. At the same time, the basket with tobacco residue particles on the outside of the box enters the box. Then the door panel 8 rises to close the inlet and outlet. The primary alkali tank 2 rises under the action of the lifting drive mechanism to soak the basket that has just entered the box.

[0049] (5) After approximately 50 minutes to 1.5 hours, the collection tank corresponding to the primary neutralization tank 4 moves backward under the action of the moving drive mechanism to a position that does not obstruct the rise of the primary neutralization tank 4. The primary neutralization tank 4 rises under the drive of the lifting drive mechanism to soak the tobacco residue particles in the basket after being soaked in the primary alkali tank 2 for 10 to 30 minutes for neutralizing the alkali solution. That is to say, within 1 to 2 hours, the primary alkali tank 2 soaks the tobacco residue particles in the basket, and the basket after being soaked in the primary alkali tank 2 first has its drained liquid collected by the collection tank, and then soaked by the rising primary neutralization tank 4 for neutralizing the alkali solution.

[0050] (6) After the tobacco residue in the primary alkali tank 2 is soaked, both the primary alkali tank 2 and the primary neutralization tank 4 are lowered, and the door panel 8 is lowered. The collection tank corresponding to the primary neutralization tank 4 repeats the operation in step (4), that is, the collection tank corresponding to the primary neutralization tank 4 moves forward to directly above the primary neutralization tank 4 to receive the solution drained from the basket that has just been soaked in the primary alkali tank 2. At the same time, the collection tank corresponding to the secondary alkali tank 5 moves forward to directly above the secondary alkali tank 5 to receive the solution drained from the basket that has just been soaked in the primary neutralization tank 4. The conveying mechanism moves the basket soaked in the primary neutralization tank 4 to above the secondary alkali tank 5, and drives the basket soaked in the primary alkali tank 2 to move to above the primary neutralization tank 4. At the same time, the basket with tobacco residue particles on the outside of the box enters the box. Then the door panel 8 rises to close the inlet and outlet. The primary alkali tank 2 repeats the operation in step (2), that is, the primary alkali tank 2 rises under the drive of the lifting mechanism to soak the basket that has just entered the box.

[0051] (7) Repeat step (5).

[0052] (8) Simultaneously with step (7), after the tobacco residue particles in the basket are soaked in the primary alkali tank 2 for about 0.5 to 1 hour, the collection tank corresponding to the secondary alkali tank 5 is moved to a position that does not obstruct the rise of the secondary alkali tank 5. The secondary alkali tank 5 is raised under the drive of the lifting mechanism to soak the tobacco residue particles in the basket that have been soaked in the primary neutralization tank 4 for 0.5 to 1 hour for secondary alkali soaking, further deconstructing the cell walls of the tobacco straw.

[0053] (9) After soaking, the primary alkali tank 2, the primary neutralization tank 4, and the secondary alkali tank 5 all descend, and the door panel 8 descends. The primary alkali tank 2, the collection tank corresponding to the primary neutralization tank 4, and the collection tank corresponding to the secondary alkali tank 5 repeat the actions in step (6). At the same time, the collection tank corresponding to the secondary neutralization tank 6 moves forward to directly above the secondary neutralization tank 6 to receive the solution drained from the basket that has just been soaked in the secondary alkali tank 5. The conveying mechanism moves the basket soaked in the secondary alkali tank 5 to above the secondary neutralization tank 6, moves the basket soaked in the primary neutralization tank 4 to above the secondary alkali tank 5, and moves the basket soaked in the primary alkali tank 2 to above the primary neutralization tank 4. At the same time, the basket with tobacco residue particles on the outside of the box enters the box. The primary alkali tank 2 rises under the drive of the lifting mechanism to soak the basket that has just entered the box.

[0054] (10) Then repeat steps (7) and (8).

[0055] (11) Simultaneously with step (10), after the tobacco residue particles in the basket have been soaked in the primary alkali tank 2 for approximately 50 minutes to 1.5 hours, the collection tank corresponding to the secondary neutralization tank 6 is moved backward by the moving drive mechanism to a position that does not obstruct the rise of the secondary neutralization tank 6. The secondary neutralization tank 6 is then raised by the lifting drive mechanism to soak the tobacco residue particles in the basket that have been soaked in the secondary alkali tank 5 for 10 to 30 minutes to neutralize the alkali. After the soaking time is up, the primary alkali tank 2, the primary neutralization tank 4, the secondary alkali tank 5, and the secondary neutralization tank 6 all descend, and the door panel 8 descends.

[0056] (12) Repeat the above steps.

[0057] (13) The treated tobacco plant residue particles can be composted after adding microbial agents.

[0058] Example 9 differs from Example 8 in that, as Figure 1 As shown, a cleaning water tank 13 is also provided downstream of the secondary neutralization tank 6 inside the box, used to wash away the residual solution on the tobacco residue particles, further improving the survival rate of the microbial agents added later. The cleaning water tank 13 is also jacked up and down on a support inside the box, and the support has the same structure as the support described above. The support is provided with a lifting drive mechanism for driving the cleaning water tank 13 up and down, and this lifting drive mechanism is the same as the lifting drive mechanism described above.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features thereof, within the spirit and principles of the present invention, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A pre-treatment device for tobacco plant residue composting, characterized by: The box body, the basket (1) for containing tobacco plant residue particles, the alkali tank and the acid neutralization tank are arranged in sequence along the moving direction of the basket (1).

2. The pre-treatment device for tobacco plant residue composting according to claim 1, characterized in that: The alkali tank comprises a first-stage alkali tank (2) and a second-stage alkali tank (5), and the acid neutralization tank comprises a first-stage neutralization tank (4) and a second-stage neutralization tank (6).

3. The pre-treatment device for tobacco plant residue composting according to claim 2, characterized in that: The first-stage neutralization tank (4), the second-stage alkali tank (5) and the second-stage neutralization tank (6) are provided with the liquid collecting tanks (3) moving forward and backward on the supports thereof, and the bottom of each liquid collecting tank (3) is provided with a slope.

4. The pre-treatment device for tobacco plant residue composting according to claim 3, characterized in that: The support is provided with a lifting driving mechanism for driving the alkali tank and / or the acid neutralization tank to lift and lower, the lifting driving mechanism comprises vertical lead screws (7) vertically and rotatably arranged on both sides of the support and first rotating motors connected to the lower ends of the vertical lead screws (7), and the two sides of the alkali tank and / or the acid neutralization tank are provided with lifting sliding blocks engaged with the vertical lead screws (7); and the first rotating motors are fixed to the bottom of the box body.

5. The pre-treatment device for the composting of tobacco plant residue according to claim 3 or 4, characterized in that: The support of the first-stage neutralization tank (4), the second-stage alkali tank (5) and the second-stage neutralization tank (6) is provided with a moving driving mechanism for driving the liquid collecting tanks (3) to move forward and backward; the moving driving mechanism comprises horizontal lead screws (14) arranged on the upper ends of both sides of the support and second rotating motors connected to one end of each horizontal lead screw (14), and the second rotating motors are fixed to the top of the corresponding support; the horizontal lead screws (14) pass through bearing seats arranged on the top of the corresponding support and are rotatably connected to the bearing seats through bearings; and the two sides of the liquid collecting tanks (3) are provided with horizontal sliding blocks engaged with the horizontal lead screws (14).

6. The pre-treatment device for the composting of tobacco plant residue according to claim 5, characterized in that: The box body is further provided with a cleaning water tank (13) downstream of the second-stage neutralization tank (6).

7. The pre-treatment device for the composting of tobacco plant residue according to any of claims 1 to 4 or 6, characterized in that: The bottom of the alkali tank is provided with a gas inlet (9) connected to an oxygen supply machine or an air compressor through a pipeline; one side of the upper part of the alkali tank and the acid neutralization tank is provided with an air outlet (10) connected to an air suction pump through a pipeline for sucking away waste gas.

8. The pre-treatment device for the composting of tobacco plant residue according to any of claims 1 to 4 or 6, characterized in that: The side surface of the alkali tank and the acid neutralization tank is provided with a liquid level alarm; the alkali tank is provided with a heating mechanism for heating alkali.

9. The pre-treatment device for the composting of tobacco plant residue according to any of claims 1 to 4 or 6, characterized in that: The top of the box body is provided with a lifting hook (11) and a conveying mechanism for driving the lifting hook (11) to pass above the alkali tank and the acid neutralization tank; and the top of the basket (1) is hingedly provided with a handle for hanging on the lifting hook (11).

10. The pre-treatment device for the composting of tobacco plant residue according to claim 9, characterized in that: The inner wall of the basket (1) is provided with a protrusion for supporting a pressing plate (12) to prevent tobacco plant residue particles from floating.

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