A drum type circulating fermentation tank with built-in heating device

Abstract

The present invention proposes a drum-type circulating fermentation tank with a built-in heating device, comprising a rotatable fermentation tank body, the fermentation tank body comprising an intermediate tank body and sealing cylinders located at two ends of the intermediate tank body, the sealing cylinders being fixedly mounted on a bracket, the intermediate tank body being open at both ends, the two ends of the intermediate tank body being respectively sealed by cylinders to form a rotatable sealing connection, the drum-type circulating fermentation tank also comprising a spiral stirring shaft, the spiral stirring shaft being arranged inside the intermediate tank body, the two ends of the spiral stirring shaft being respectively rotatably connected to the sealing cylinder, and a heating tank, the heating tank being an upwardly open U-shaped structure, the spiral stirring shaft being arranged in the heating tank, a driving device for driving the spiral stirring shaft to rotate being arranged on the bracket, the heating tank being hollow inside to form an oil storage cavity, the heating tank being provided with a heat transfer oil inlet and a heat transfer oil outlet connected with the oil storage cavity, a feeding device being arranged on one of the sealing cylinders, a discharging device being arranged on the other sealing cylinder, and a discharge port being arranged at the bottom of the heating tank.

Description

Technical Field

[0001] The invention relates to a drum type circulation fermentation tank with a built-in heating device. Background Art

[0002] The use of microbial fermentation and decomposition technology for biomass (including domestic garbage and various biological wastes) is a new generation of technology for the 21st century that is being developed by countries around the world, especially developed industrial countries.

[0003] In this technology, the industrial equipment used to implement microbial fermentation of biomass is called a fermenter, which is the core equipment in the biomass fermentation and decomposition process technology system.

[0004] The fermentation tank is generally made of steel plate in the shape of a drum, with a diameter of 3 to 4 meters and a length of more than 10 meters. The drum is supported by two sets of supporting wheels and driven by an outer gear ring, rotating around the axis. The axis of the drum is slightly inclined to the ground plane. As the drum rotates, the garbage is driven by the drum wall to continuously turn over, fully contact with the air in the drum, aerobic digestion, and slowly move from the feed end to the discharge end. An air inlet is set at one end of the drum, and a certain amount of air is sent in by the blower. When the ambient temperature is low in winter, high-temperature steam can also be sent in to help accelerate fermentation. The other end of the drum is connected to an induced draft fan to discharge the exhaust gas into the garbage deodorization pool. Since the temperature in the drum can rise to 65 to 70°C, general pathogens, parasites and grass seeds in the garbage will be killed, and the produced compost meets the hygiene requirements.

[0005] For example, the technical solution disclosed in the application number 2019102831943, entitled "Biological Drum Fermenter Device", records the fermenter in the prior art in detail.

[0006] However, during the fermentation and digestion process, microorganisms need to reach a suitable temperature for biological growth to ensure efficient fermentation processing, so the biomass in the fermentation tank needs to be heated. Summary of the invention

[0007] In view of the problems pointed out in the background technology, the present invention proposes a drum-type circulation fermenter with a built-in heating device to improve the quality and efficiency of fermentation.

[0008] The technical solution of the present invention is achieved in this way:

[0009] A drum-type circulating fermentation tank with a built-in heating device comprises a rotatable fermentation tank body, the fermentation tank body comprises an intermediate tank body and sealing cylinders located at two ends of the intermediate tank body, the sealing cylinders are fixedly mounted on a bracket, the intermediate tank body is set with openings at both ends, and the two ends of the intermediate tank body are respectively sealed by cylinders to form a rotatable sealing connection, and also comprises a spiral stirring shaft, the spiral stirring shaft is arranged inside the intermediate tank body, and the two ends of the spiral stirring shaft are respectively rotatably connected to the sealing cylinder, and also comprises a heating tank, the heating tank is a U-shaped structure opening upward, the two ends of the heating tank are respectively fixedly connected to the sealing cylinder, the spiral stirring shaft is arranged in the heating tank, a driving device for driving the spiral stirring shaft to rotate is provided on the bracket, the heating tank is internally hollow to form an oil storage cavity, the heating tank is provided with a heat transfer oil inlet and a heat transfer oil outlet connected to the oil storage cavity, one of the sealing cylinders is provided with a feeding device, and the other sealing cylinder is provided with a discharging device, and a discharge port is provided at the bottom of the heating tank, and the discharge port is arranged corresponding to the position of the feeding device.

[0010] The present invention is further configured such that the feeding device comprises a feeding pipe, one end of which passes through a sealing cylinder and extends into the fermentation tank body, a rotatable spiral shaft is provided in the feeding pipe, and a driving motor for driving the spiral shaft to rotate is provided at the other end of the feeding pipe, and an opening is also provided on the feeding pipe, and a feeding hopper connected to the opening is provided at the opening.

[0011] The present invention is further configured such that the discharging device comprises a discharging pipe 2, one end of which passes through a sealing tube and extends into the fermentation tank body, a rotatable spiral shaft 2 is provided in the discharging pipe 2, a driving motor 2 for driving the spiral shaft 2 to rotate is provided at the other end of the discharging pipe 2, and a discharging port is provided at the other end of the discharging pipe 2.

[0012] The present invention is further configured such that the outer side wall of the intermediate tank body is provided with a support ring, the bracket is provided with a supporting wheel which is in rolling cooperation with the supporting ring, and the supporting wheel is rotatably connected to the bracket.

[0013] The present invention is further configured such that a gear ring is provided on the outer side wall of the intermediate tank body, a transmission motor is provided on the bracket, a gear is connected to the output shaft of the transmission motor, and the gear is meshingly connected with the gear ring.

[0014] The present invention is further configured such that a lifting blade is provided on the inner side wall of the intermediate tank body.

[0015] The present invention is further configured such that an air inlet is provided on the fermentation tank body.

[0016] The present invention is further configured such that an air outlet is provided on the fermentation tank body.

[0017] The present invention is further configured such that the second discharge pipe is located below the heating tank.

[0018] The present invention is further configured such that the feed pipe 1 is located above the heating tank.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0020] The drum-type circulating fermentation tank with a built-in heating device provided by the present invention has a U-shaped heating groove in the tank body, which can heat the biomass in the tank body and provide a good environment for the growth of microorganisms. The material enters from the right end of the tank body, and the tank body rotates to drive the material to be lifted up, and the lifted material falls into the heating groove. The material in the heating groove moves to the right along the heating groove under the action of the spiral stirring shaft, and then falls into the tank body from the discharge port at the right end of the heating groove, and finally moves to the left end of the tank body and is sent out of the tank body through the discharging device. In this way, the material circulates left and right and flips up and down in the tank body, forming a good fermentation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a side schematic diagram of the present invention;

[0024] Figure 3 It is an enlarged view of the left end of the present invention;

[0025] Figure 4 It is an enlarged view of the middle part of the present invention;

[0026] Figure 5 It is an enlarged view of the right end of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] For reference Figure 1-5 The present invention is described:

[0029] A drum-type circulating fermenter with a built-in heating device comprises a rotatable fermenter body, the fermenter body comprises an intermediate tank body 1 and sealing cylinders 2 located at both ends of the intermediate tank body 1, the sealing cylinders 2 are fixedly mounted on a bracket 5, the intermediate tank body 1 is opened at both ends, and the sealing cylinders 2 are respectively provided at both ends of the intermediate tank body 1 to form a rotatable sealed connection. The above structure is a common structure of a fermenter in the prior art.

[0030] It also includes a spiral stirring shaft 3, which is arranged inside the middle tank body 1. Both ends of the spiral stirring shaft 3 are rotatably connected to the sealing cylinder 2 respectively. The middle tank body 1, the sealing cylinder 2 and the spiral stirring shaft 3 are coaxially arranged.

[0031] The heating tank 4 is a U-shaped structure with an upward opening, and both ends of the heating tank 4 are respectively fixedly connected to the sealing cylinder 2, and the spiral stirring shaft 3 is arranged in the heating tank 4. When the spiral stirring shaft 3 rotates, it can drive the material in the heating tank 4 to move toward one end.

[0032] The support 5 is provided with a driving device 6 for driving the spiral stirring shaft 3 to rotate. The driving device 6 is a motor.

[0033] The heating tank 4 is hollow inside to form an oil storage chamber 7. The heating tank 4 is provided with a heat transfer oil inlet 8 and a heat transfer oil outlet 9 which are connected to the oil storage chamber 7. The heat in the heating tank can be continuously dissipated by the oil flowing in the oil storage chamber 7.

[0034] A feeding device 30 is provided on one of the sealing cylinders 2, a discharging device 40 is provided on the other sealing cylinder 2, and a discharge port 10 is provided at the bottom of the heating tank 4, and the discharge port 10 is arranged corresponding to the position of the feeding device.

[0035] The feeding device includes a feeding pipe 11, one end of which passes through the sealing cylinder 2 and extends into the fermentation tank body, a rotatable spiral shaft 12 is arranged in the feeding pipe 11, and a driving motor 13 for driving the spiral shaft 12 to rotate is arranged at the other end of the feeding pipe 11. The feeding pipe 11 is also provided with an opening, and a hopper 15 connected thereto is arranged at the opening. The material is added from the hopper 15 and then sent into the fermentation tank through the feeding pipe 11.

[0036] Among them, the discharging device includes a discharging pipe 16, one end of which passes through the sealing tube 2 and extends into the fermentation tank body, a rotatable spiral shaft 17 is provided in the discharging pipe 16, and the other end of the discharging pipe 16 is provided with a driving motor 18 for driving the spiral shaft 17 to rotate, and the other end of the discharging pipe 16 is provided with a discharging port 19.

[0037] The outer side wall of the intermediate tank body 1 is provided with a support ring 20 , and the bracket 5 is provided with a supporting wheel 21 which is rollingly matched with the supporting ring 20 , and the supporting wheel 21 is rotatably connected to the bracket 5 .

[0038] The outer wall of the intermediate tank body 1 is provided with a gear ring 22 , the bracket 5 is provided with a transmission motor 23 , the output shaft of the transmission motor 23 is connected with a gear 24 , and the gear 24 is meshedly connected with the gear ring 22 .

[0039] Wherein, the inner wall of the intermediate tank body 1 is provided with lifting blades 25 .

[0040] Wherein, an air inlet 26 is provided on the fermentation tank body.

[0041] Wherein, an air outlet 27 is provided on the fermentation tank body.

[0042] Wherein, the discharge pipe 2 16 is located below the heating tank 4 .

[0043] Among them, the feeding pipe 11 is located above the heating tank 4.

[0044] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0045] The drum-type circulating fermentation tank with a built-in heating device provided by the present invention has a U-shaped heating groove 4 in the tank body, which can heat the biomass in the tank body and provide a good environment for the growth of microorganisms. The material enters from the right end of the tank body, and the tank body rotates, driving the material to be lifted up, and the lifted material falls into the heating groove 4. The material in the heating groove 4 moves to the right along the heating groove 4 under the action of the spiral stirring shaft 3, and then falls into the tank body from the discharge port 10 at the right end of the heating groove 4, and finally moves to the left end of the tank body and is sent out of the tank body through the discharging device. In this way, the material circulates left and right and flips up and down in the tank body, forming a good fermentation process.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drum-type circulating fermenter with a built-in heating device, characterized in that: The fermentation tank body comprises a rotatable fermentation tank body, which comprises an intermediate tank body and sealing cylinders at both ends of the intermediate tank body, the sealing cylinders are fixedly mounted on a bracket, the intermediate tank body is opened at both ends, and the sealing cylinders at both ends of the intermediate tank body form a rotatable sealed connection, and also comprises a spiral stirring shaft, which is arranged inside the intermediate tank body, and the two ends of the spiral stirring shaft are rotatably connected to the sealing cylinder respectively, and also comprises a heating tank, the heating tank is a U-shaped structure opening upward, the two ends of the heating tank are fixedly connected to the sealing cylinder respectively, the spiral stirring shaft is arranged in the heating tank, a driving device for driving the spiral stirring shaft to rotate is arranged on the bracket, the heating tank is hollow inside to form an oil storage cavity, the heating tank is provided with a heat transfer oil inlet and a heat transfer oil outlet connected to the oil storage cavity, and one of the sealing A feeding device is provided on the sealing cylinder, a discharging device is provided on another sealing cylinder, a discharging port is provided at the bottom of the heating tank, and the discharging port is arranged corresponding to the position of the feeding device; the feeding device comprises a feeding pipe 1, one end of which passes through the sealing cylinder and extends into the fermentation tank body, a rotatable spiral shaft 1 is provided in the feeding pipe 1, a driving motor 1 for driving the spiral shaft 1 to rotate is provided at the other end of the feeding pipe 1, and an opening is also provided on the feeding pipe 1, and a feeding hopper connected thereto is provided at the opening; the discharging device comprises a discharging pipe 2, one end of which passes through the sealing cylinder and extends into the fermentation tank body, a rotatable spiral shaft 2 is provided in the discharging pipe 2, a driving motor 2 for driving the spiral shaft 2 to rotate is provided at the other end of the discharging pipe 2, and a discharging port is provided at the other end of the discharging pipe 2.

2. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The outer side wall of the intermediate tank body is provided with a supporting ring, and the bracket is provided with a supporting wheel which is in rolling cooperation with the supporting ring, and the supporting wheel is rotatably connected to the bracket.

3. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The outer wall of the intermediate tank body is provided with a gear ring, the bracket is provided with a transmission motor, the output shaft of the transmission motor is connected with a gear, and the gear is meshed with the gear ring.

4. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The inner side wall of the intermediate tank body is provided with lifting blades.

5. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The fermentation tank body is provided with an air inlet.

6. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The fermentation tank body is provided with an air outlet.

7. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The second discharge pipe is located below the heating tank.

8. The drum-type circulating fermenter with a built-in heating device according to claim 1, characterized in that: The feeding pipe 1 is located above the heating tank.

Images