A malt dextrin waste residue treatment device and method

Abstract

The application discloses a malt dextrin waste residue treatment device and method, which comprises a fermentation tank, a stirring shaft, a stirring paddle, a first driving mechanism and a gas guide bin. The stirring shaft is hollow in the inside to form a first air channel. The stirring paddle is hollow in the inside to form a second air channel. The first air channel is communicated with the second air channel. A plurality of aeration holes are arranged on the stirring paddle. A connecting rod, a spring and a plurality of blocking pieces provided with air passing holes are arranged in the second air channel. The connecting rod connects the blocking pieces together. The spring pulls the connecting rod to block the aeration holes. A pull rope is arranged in the first air channel. One end of the pull rope is fixedly connected with the connecting rod. The pull rope pulls the connecting rod to move horizontally. The gas guide bin is installed on the top of the stirring shaft and is rotationally connected with the stirring shaft. An air inlet pipe is arranged on the gas guide bin. An air inlet hole is arranged on the stirring shaft. The malt dextrin waste residue is subjected to pulse feed fermentation, the invalid oxygen supply ratio is reduced, the problem of large energy waste is solved, the environment is protected, and the enterprise benefits are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid waste treatment, in particular to a malt dextrin waste residue treatment device and method. BACKGROUND

[0002] Malt dextrin production uses corn as raw material, and after slurry preparation, liquefaction, filtration, decolorization, concentration and drying, the finished product is obtained. The sugar residue obtained after filtration contains unhydrolyzed starch, protein, dietary fiber, ash, fat, etc. Directly discarded, it pollutes the environment. Using biological fermentation technology to process it into protein feed for use can reduce waste residue treatment cost and greatly improve enterprise efficiency. Factors affecting fermentation efficiency include temperature, pH, dissolved oxygen content, etc. The existing fermentation equipment usually uses multiple branch pipes at the bottom of the fermentation tank and cooperates with the upper stirring paddle for aeration fermentation. This method has poor dissolved oxygen mixing effect and is not suitable for complex component malt dextrin waste residue fermentation.

[0003] Patent 201910655177.8 discloses a modular aerobic fermentation aeration stirrer, which comprises a hollow main shaft and a stirring paddle connected thereto. The stirring paddle contains a closed air duct space composed of an air duct outer plate, an air duct inner plate and an air duct cover plate. The air duct outer plate is uniformly distributed with air outlets, which realizes the continuous aeration function of the air outlets during the stirring process of the stirring paddle. Although the stirring and oxygen dissolving effect is improved to a certain extent, the air outlets of the stirrer are in an open state for a long time. After shutdown, the malt dextrin waste residue fermentation liquid with high solid content will enter the fermentation liquid through the air outlets, causing blockage problems. Only continuous aeration can avoid this situation, resulting in a large proportion of invalid oxygen supply and a large amount of energy waste.

[0004] How to ensure that the aeration holes are not blocked during the efficient fermentation treatment of malt dextrin solid waste residues, while improving the aeration oxygen content, saving energy and reducing cost is the focus of enterprise research. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a malt dextrin waste residue treatment device to solve the problem of a large proportion of invalid oxygen supply and a large amount of energy waste caused by continuous aeration to avoid blockage of the aeration holes by backflow of the fermentation liquid during the existing waste residue fermentation process.

[0006] The malt dextrin waste residue treatment device is characterized in that the stirring shaft is internally hollow to form a first air passage, the stirring paddle is internally hollow to form a second air passage, the stirring paddle is arranged at the bottom of the stirring shaft, the first air passage is communicated with the second air passage, a plurality of aeration holes are arranged on the stirring paddle, a connecting rod, a spring and a plurality of blocking pieces provided with air passing holes are arranged in the second air passage, the connecting rod connects the blocking pieces together, the spring pulls the connecting rod to block the aeration holes, a pull rope is arranged in the first air passage, one end of the pull rope is fixedly connected with the connecting rod, the pull rope pulls the connecting rod to move horizontally, a gas guide warehouse is arranged at the top of the stirring shaft, the gas guide warehouse is rotationally connected with the stirring shaft, an air inlet pipe is arranged on the gas guide warehouse, an air inlet hole is arranged on the stirring shaft, the air inlet hole is respectively communicated with the internal cavities of the first air passage and the gas guide warehouse, and a first driving mechanism is arranged for driving the stirring shaft to rotate.

[0007] Preferably, a pulling mechanism is arranged on the stirring shaft, and the pulling mechanism is used for pulling the pull rope upward to make the blocking pieces open the aeration holes.

[0008] Preferably, the pulling mechanism comprises an inner stud, an induction coil and an iron core, the inner stud is fixedly connected with the top of the stirring shaft, a stepped hole is arranged on the inner stud, the iron core is located at the bottom of the stepped hole, the induction coil is sleeved on the upper portion of the iron core and located at the upper portion of the stepped hole, the pull rope passes through the stepped hole and is fixedly connected with the bottom of the iron core.

[0009] Preferably, an outer sleeve is arranged on the inner stud, the outer sleeve is sleeved on the outer portion of the inner stud and rotationally connected with the inner stud, a cylindrical groove is arranged at the center of the top of the outer sleeve, a negative electrode connecting coil and a positive electrode connecting post are arranged in the groove, a positive electrode wire and a negative electrode wire are arranged in the outer sleeve, one end of the induction coil passes through the inner stud to form a positive electrode contact point, the other end of the induction coil passes through the inner stud to form a negative electrode contact point, one end of the positive electrode wire is contact-connected with the positive electrode contact point, the other end of the positive electrode wire is contact-connected with the positive electrode connecting post, one end of the negative electrode wire is contact-connected with the negative electrode contact point, and the other end of the positive electrode wire is contact-connected with the negative electrode connecting coil.

[0010] Preferably, the negative electrode connecting coil and the positive electrode connecting post are respectively rotationally connected with the outer sleeve, and a second driving mechanism is arranged on the fermentation tank, and the second driving mechanism is used for driving the outer sleeve to rotate relative to the inner stud.

[0011] Preferably, the positive electrode terminal is T-shaped, the positive electrode terminal is inserted into the negative electrode terminal, and an insulating sheet for preventing contact is arranged between the positive electrode terminal and the negative electrode terminal.

[0012] Preferably, a guide wheel is arranged in the first air channel, the guide wheel is in the same plane as the connecting rod, one end of the pull rope is connected to the connecting rod, and the other end of the pull rope passes through the guide wheel and extends to the first end of the first air channel.

[0013] Preferably, the pulling mechanism is an electric push rod structure.

[0014] Preferably, one end of the spring is fixedly connected to the connecting rod, and the other end of the spring is fixedly connected to the second end of the second air channel.

[0015] A malt dextrin residue treatment method, comprising the following steps,

[0016] S1. The malt dextrin residue is dewatered by a belt dewatering agent to a moisture content of 50-60%;

[0017] S2. According to 1-3% of the dry weight of the residue, Bacillus subtilis and yeast are added in a ratio of 2:1;

[0018] S3. The fermentation temperature is controlled to be 30-40 DEG C, pulse aeration is used for oxygen supply, and the fermentation time is 4-5 days;

[0019] S4. The fermentation liquid is dried at low temperature to a moisture content of less than 12%, and granulation can be carried out.

[0020] The present application has the following advantages:

[0021] 1. By arranging the aeration hole on the stirring paddle, the connecting rod and the block are moved by the pull rope, the aeration hole is opened, the stirring paddle rotates and aerates at the same time, the dissolved oxygen content of the fermentation liquid is improved, and the fermentation efficiency of the residue is improved; loosen the pull rope, the block will block the aeration hole under the action of the spring, avoid the backflow of the fermentation liquid during the unloading process, reduce the aeration time, reduce the proportion of invalid oxygen supply, and save energy;

[0022] 2. By installing inner column head, inductive coil, iron core and outer sleeve on the stirring shaft, the inductive coil is intermittently powered to drive the iron core to move, and then the plugging and opening of the aeration hole are intermittently controlled, the pulse aeration function of the fermentation liquid is realized, compared with continuous aeration, the aeration effect is improved, the energy waste is reduced, and the cost is saved;

[0023] 3. The stirring paddle and the outer sleeve are respectively driven to rotate by the first driving mechanism and the second driving mechanism, the rotation speed of the first driving mechanism is controlled, the amount of aeration per unit time can be controlled, the rotation position of the second driving mechanism is controlled, the aeration point position in the fermentation liquid can be controlled, and the precise control pulse aeration function is realized by the combination of the two, and the fermentation effect is improved;

[0024] 4. By adding compound strains in malt dextrin waste residues for feed fermentation, the crude protein content is increased by 18-25%, and the cellulose degradation rate is 30%, which not only reduces the waste disposal cost of enterprises, but also improves the enterprise benefits. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall three-dimensional structure schematic diagram of the embodiment of the application;

[0026] Figure 2 It is the internal mechanism three-dimensional structure schematic diagram of the embodiment of the application;

[0027] Figure 3 It is Figure 2 A half-section structure schematic diagram;

[0028] Figure 4 It is Figure 3 The enlarged structure schematic diagram at A;

[0029] Figure 5 It is Figure 3 The enlarged structure schematic diagram at B.

[0030] In the figure, 1 is a fermentation tank, 2 is a discharge port, 3 is a feeding port, 4 is an exhaust port, 5 is a stirring shaft, 6 is a stirring paddle, 7 is a first driving mechanism, 8 is a first air duct, 9 is a second air duct, 10 is an aeration hole, 11 is a gas guide warehouse, 12 is an air inlet pipe, 13 is an air inlet hole, 14 is a block, 15 is a connecting rod, 16 is a gas passing hole, 17 is a spring, 18 is a guide wheel, 19 is a pull rope, 20 is an inner column head, 21 is a stepped hole, 22 is an iron core, 23 is an induction coil, 24 is a positive contact, 25 is a negative contact, 26 is an outer sleeve, 27 is a positive line, 28 is a negative line, 29 is a groove, 30 is a negative terminal, 31 is a positive terminal, 32 is an insulating sheet, and 33 is a second driving mechanism. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. The components of the embodiments of the application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] like Figure 1 As shown, a maltodextrin waste residue treatment device includes a fermentation tank 1, a stirring shaft 5, a stirring paddle 6, a first drive mechanism 7, and a gas guide chamber 11. The bottom of the fermentation tank 1 has a discharge port 2 for discharging the fermented waste residue. The top surface of the fermentation tank 1 has a feed inlet 3 and an exhaust port 4. The feed inlet 3 is used to discharge the maltodextrin waste residue to be fermented, and the exhaust port 4 is used to discharge excess carbon dioxide and other gases. Figure 2 , Figure 3 As shown, the stirring shaft 5 has a tubular structure with a hollow interior forming a cylindrical first air passage 8. The first air passage 8 is used to transmit air containing a large amount of oxygen downwards. The stirring paddle 6 has a flat blade structure and a hollow interior forming a cylindrical second air passage 9. The stirring paddle 6 is installed at the bottom of the stirring shaft 5 and is located at the bottom of the fermentation tank 1 to achieve stirring and mixing of the fermentation liquid. The first air passage 8 and the second air passage 9 are connected. The stirring paddle 6 is provided with multiple aeration holes 10, which are distributed at intervals along the axis of the stirring paddle 6 blades. A large amount of air is introduced from the first air passage 8 into the second air passage 9 and finally discharged from the aeration holes 10.

[0034] like Figure 4As shown, the connecting rod 15, the spring 17 and the plurality of blocking blocks 14 are installed in each second air channel 9. The blocking blocks 14 are in a cylindrical structure, and the diameter of the blocking blocks 14 is equal to the diameter of the cylindrical second air channel 9. The circumferential surface of the blocking blocks 14 is tightly attached to the inner surface of the second air channel 9. The blocking blocks 14 are limited in the second air channel 9 and can slide left and right. The gas passing hole 16 is formed in each blocking block 14 to allow the gas to pass. The length of each blocking block 14 is greater than the diameter of the aeration hole 10. When the blocking block 14 is located above the aeration hole 10, the blocking block 14 can block the gas from being sprayed outwards through the aeration hole 10, that is, the effect of plugging the aeration hole 10 is achieved. The connecting rod 15 connects the blocking blocks 14 together, which is used to synchronously control the left and right sliding of the blocking blocks 14. The spring 17 is located at the end of the second air channel 9. One end of the spring 17 is fixedly connected with the connecting rod 15, and the other end of the spring 17 is fixedly connected with the end bottom surface of the second air channel 9. The spring 17 is contracted to pull the connecting rod 15 to move rightwards to plug the aeration hole 10. The first air channel 8 is provided with a pull rope 19 and a guide wheel 18. The guide wheel 18 is rotatably connected with the inner wall of the first air channel 8 through a rotating shaft. The guide wheel 18 is located in the same plane as the connecting rod 15. One end of the pull rope 19 is fixedly connected with the connecting rod 15, and the other end of the pull rope 19 passes through the guide wheel 18 and extends to the head end of the first air channel 8. The pull rope 19 is pulled upwards, and the pull rope 19 moves horizontally under the action of the guide wheel 18 to pull the connecting rod 15. As shown in the figure, Figure 3 As shown, the gas guide warehouse 11 is installed on the top of the stirring shaft 5. The gas guide warehouse 11 is rotatably connected with the stirring shaft 5, and an annular internal chamber is formed between the gas guide warehouse 11 and the stirring shaft 5. The gas guide warehouse 11 is provided with an air inlet pipe 12. The air inlet pipe 12 is used to introduce external air. A plurality of air inlet holes 13 are formed in the stirring shaft 5. The air inlet holes 13 are respectively connected with the first air channel 8 and the internal chamber of the gas guide warehouse 11. The first driving mechanism 7 includes a motor and a gear. The gear is sleeved outside the stirring shaft 5. The output end of the motor is connected with the gear to drive the stirring shaft 5 to rotate through meshing transmission.

[0035] The pulling mechanism is installed on the stirring shaft 5. The pulling mechanism is used to pull the pull rope 19 upwards to open the aeration hole 10. The pulling mechanism has various forms.

[0036] In some embodiments, the pulling mechanism is an electric push rod structure. The electric push rod is installed on the top of the stirring shaft 5. The output end of the electric push rod is fixedly connected with the pull rope 19. The electric push rod can pull the pull rope 19 upwards when it is started.

[0037] In some embodiments, as shown in the figure, Figure 3 , Figure 5As shown, the pulling mechanism includes inner column head 20, induction coil 23, and iron core 22. Inner column head 20 is a cylindrical plastic structure, and the bottom of inner column head 20 is fixedly connected to the top of stirring shaft 5. Three stepped holes 21 are formed in inner column head 20. Iron core 22 is cylindrical, and the length of iron core 22 is less than the height of stepped holes 21. Iron core 22 is vertically located at the bottom of stepped holes 21. Induction coil 23 is sleeved on the upper part of iron core 22 and located at the upper part of stepped holes 21. Pulling rope 19 passes through stepped holes 21 and is fixedly connected to the bottom of iron core 22. When induction coil 23 is electrified, induction coil 23 generates magnetic force to move iron core 22 upward to the middle of induction coil 23, thereby achieving the function of pulling pulling rope 19 upward.

[0038] Outer cylinder sleeve 26 is installed on inner column head 20 and sleeved on inner column head 20. Outer cylinder sleeve 26 is also a plastic structure, and outer cylinder sleeve 26 is rotatably connected to inner column head 20. A cylindrical groove 29 is formed in the top center of outer cylinder sleeve 26, and a negative electrode coil 30 and a positive electrode terminal 31 are arranged in groove 29. Positive electrode terminal 31 is in the shape of a T, and positive electrode terminal 31 is inserted into negative electrode coil 30. An insulating sheet 32 is arranged between positive electrode terminal 31 and negative electrode coil 30 to prevent short circuiting.

[0039] Three groups of positive electrode wires 27 and negative electrode wires 28 are installed in outer cylinder sleeve 26. Positive electrode wires 27 and negative electrode wires 28 are embedded in outer cylinder sleeve 26. One end of induction coil 23 passes through inner column head 20 to form a positive electrode contact 24, and the other end of induction coil 23 passes through inner column head 20 to form a negative electrode contact 25. One end of positive electrode wire 27 is in contact with positive electrode contact 24, and the other end of positive electrode wire 27 extends into groove 29 and is in contact with positive electrode terminal 31. One end of negative electrode wire 28 is in contact with negative electrode contact 25, and the other end of negative electrode wire 28 extends into groove 29 and is in contact with negative electrode coil 30.

[0040] Negative electrode coil 30 and positive electrode terminal 31 are respectively rotatably connected to outer cylinder sleeve 26. Second driving mechanism 33 is installed on fermentation tank 1. Second driving mechanism 33 includes a motor and a gear. The gear is sleeved on outer cylinder sleeve 26, and the output end of the motor drives outer cylinder sleeve 26 to rotate relative to inner column head 20 through gear meshing. Negative electrode coil 30 and positive electrode terminal 31 are respectively connected to external wires. During the rotation of outer cylinder sleeve 26, negative electrode coil 30 and positive electrode terminal 31 are in continuous contact with negative electrode wire 28 and positive electrode wire 27, and positive electrode contact 24 and negative electrode contact 25 are in intermittent contact with positive electrode wire 27 and negative electrode wire 28.

[0041] Working principle: the positive terminal post 31 and the negative terminal post 30 are respectively connected with wires, the compressed air is communicated into the air inlet pipe 12, the high-pressure air passes through the air guide warehouse 11 and the air inlet hole 13 into the first air channel 8 in sequence, and continues to move downward to the second air channel 9, passes through a plurality of air holes 16, and is finally temporarily stored in the second air channel 9; the first driving mechanism 7 is started synchronously to drive the stirring shaft 5 to rotate, the stirring shaft 5 drives the stirring paddle 6 and the inner stud 20 to rotate, the rotating stirring paddle 6 realizes the mixing and stirring function of the fermentation liquid, when the second driving mechanism 33 is not started, the outer sleeve 26 is fixed, the inner stud 20 rotates, when the positive contact 24 and the positive wire 27 and the negative contact 25 and the negative wire 28 are contacted, the inductive coil 23 realizes power-on, the magnetic force generated by the inductive coil 23 pulls the iron core 22 to move upward, the iron core 22 drives the pull rope 19 to move upward, the pull rope 19 drives the connecting rod 15 to move left, the connecting rod 15 drives the block 14 to move, realizes the opening of the aeration hole 10, and synchronously stretches the spring 17, the high-pressure gas in the second air channel 9 is quickly sprayed out, realizes the aeration and oxygen supply function of the fermentation liquid, the inner stud 20 continues to rotate, the positive contact 24 and the positive wire 27, the negative contact 25 and the negative wire 28 are disconnected, the inductive coil 22 is powered off, the spring 17 drives the block 14, the connecting rod 15, the pull rope 19 and the iron core 22 to move in sequence, until the iron core 22 is blocked from further movement by the stepped hole 21, at this time the block 14 realizes the closing of the aeration hole 10, the stirring shaft 5 rotates continuously, the inductive coil 23 is powered on and off continuously, the block 14 continuously opens and closes the aeration hole 10, realizes the pulse aeration function of the fermentation liquid; because the outer sleeve 26 does not rotate, the stirring paddle 6 can only rotate to a certain position to realize the pulse aeration function, the aeration effect is poor, in order to solve the problem, the second driving mechanism 33 is started, the second driving mechanism 33 drives the outer sleeve 26 to rotate, the rotation of the outer sleeve 26 changes the position of the inductive coil 23 when powered on, and further changes the position of the pulse aeration point in the fermentation liquid, realizes the pulse aeration function at any position, and improves the pulse aeration effect; compared with continuous aeration, the high-pressure instantaneous airflow of pulse aeration produces violent vortex, the bubbles are broken into smaller ones (diameter <0.5mm), the gas-liquid contact area increases by 40-60%, intermittent aeration avoids the continuous airflow of bubbles rising and merging, maintains a small bubble proportion (>70%), and the oxygen transfer coefficient is increased to 200-300h -1 , pulse aeration can reduce the invalid oxygen supply time and reduce energy consumption by 30-50%.

[0042] A malt dextrin waste residue treatment method, comprising the following steps,

[0043] S1. The malt dextrin waste residue with a moisture content of 60-80% is dewatered to a moisture content of 50-60% by a belt dewatering agent, too high causes anaerobic spoilage, too low inhibits microbial activity;

[0044] S2. Add Bacillus subtilis and yeast in a ratio of 2:1 at 1-3% of the dry weight of the waste residue, and put into the fermentation tank;

[0045] S3. Control the fermentation temperature at 30-40°C, pulse aeration for oxygen supply at 0.1-0.3 m 3 / min·m 3 , and the fermentation time is 4-5 days;

[0046] S4. Dry the fermentation liquor at a low temperature of 60°C until the water content is less than 12%, and granulate into 3-5 mm particles.

[0047] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A maltodextrin waste residue treatment device, characterized in that: The utility model relates to a kind of fermentation tank, including fermentation tank (1), stirring shaft (5), stirring paddle (6), first driving mechanism (7), gas guide warehouse (11), the inside hollow of stirring shaft (5) forms first air passage (8), the inside hollow of stirring paddle (6) forms second air passage (9), stirring paddle (6) is installed in the bottom of stirring shaft (5), and first air passage (8) is communicated with second air passage (9), a plurality of aeration holes (10) are provided on stirring paddle (6), connecting rod (15), spring (17), a plurality of the plug (14) provided with air passage (16) are provided in second air passage (9), connecting rod (15) is connected together with plug (14), spring (17) pulls connecting rod (15) for plug (14) to block aeration hole (10), pull rope (19) is provided in first air passage (8), one end of pull rope (19) is fixedly connected with connecting rod (15), pull rope (19) pulls connecting rod (15) horizontal motion, gas guide warehouse (11) is installed in the top of stirring shaft (5), gas guide warehouse (11) is rotatably connected with stirring shaft (5), gas guide warehouse (11) is provided with air inlet pipe (12), air inlet hole (13) is provided on stirring shaft (5), air inlet hole (13) is respectively communicated with the internal chamber of first air passage (8) and gas guide warehouse (11), first driving mechanism (7) is used to drive the rotation of stirring shaft (5), pulling mechanism is provided on stirring shaft (5), the pulling mechanism is used to pull up pull rope (19) to make plug (14) open aeration hole (10), the pulling mechanism includes inner stud (20), induction coil (23), iron core (22), inner stud (20) is fixedly connected with the top of stirring shaft (5), inner stud (20) is provided with stepped hole (21), iron core (22) is located at the bottom of stepped hole (21), induction coil (23) is sleeved on the upper portion of iron core (22), and located in the upper portion of stepped hole (21), induction coil (23) is intermittently energized to drive iron core (22) to move, pull rope (19) passes through stepped hole (21), and is fixedly connected with the bottom of iron core (22), iron core (22) intermittently controls the blockage and opening of aeration hole (10) to realize the pulse aeration to fermentation liquid.

2. A malt dextrin waste treatment device according to claim 1, characterized by: The inner column head (20) is provided with an outer sleeve (26) which is sleeved on the outer column head (20) and is rotationally connected to the inner column head (20), the top center of the outer sleeve (26) is provided with a cylindrical groove (29), the groove (29) is provided with a negative electrode coil (30) and a positive electrode terminal (31), the outer sleeve (26) is provided with a positive electrode wire (27) and a negative electrode wire (28), one end of the induction coil (23) passes through the inner column head (20) to form a positive electrode contact (24), the other end of the induction coil (23) passes through the inner column head (20) to form a negative electrode contact (25), one end of the positive electrode wire (27) is in contact with the positive electrode contact (24), the other end of the positive electrode wire (27) is in contact with the positive electrode terminal (31), one end of the negative electrode wire (28) is in contact with the negative electrode contact (25), and the other end of the positive electrode wire (27) is in contact with the negative electrode coil (30).

3. A malt dextrin residue processing apparatus according to claim 2, characterized by: The negative electrode coil (30) and the positive electrode terminal (31) are rotationally connected to the outer sleeve (26), and the fermentation tank (1) is provided with a second driving mechanism (33) for driving the outer sleeve (26) to rotate relative to the inner column head (20).

4. A malt dextrin residue processing apparatus according to claim 3, characterized by: The positive electrode terminal (31) is in the shape of a T, the positive electrode terminal (31) is inserted into the negative electrode coil (30), and an insulating sheet (32) is arranged between the positive electrode terminal (31) and the negative electrode coil (30) to prevent contact.

5. A malt dextrin residue processing apparatus according to claim 1, characterized by: The first air duct (8) is provided with a guide wheel (18), the guide wheel (18) and the connecting rod (15) are located on the same plane, one end of the pull rope (19) is connected to the connecting rod (15), and the other end of the pull rope (19) passes around the guide wheel (18) and extends to the first end of the first air duct (8).

6. A malt dextrin residue processing apparatus according to claim 1, characterized by: One end of the spring (17) is fixedly connected to the connecting rod (15), and the other end of the spring (17) is fixedly connected to the end of the second air duct (9).

7. A malt dextrin waste residue treatment method, based on the malt dextrin waste residue treatment device according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1. The malt dextrin waste residue is dewatered by a belt dewatering agent to a moisture content of 50-60%; S2. According to 1-3% of the dry weight of the waste residue, Bacillus subtilis and yeast are added in a ratio of 2:1; S3. The fermentation temperature is controlled to be 30-40 DEG C, pulse aeration is used for oxygen supply, and the fermentation time is 4-5 days; S4. The fermented liquid is dried at low temperature to a moisture content of less than 12%, and granulation can be performed.

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