Waste straw and residual film biochar preparation device

Abstract

The utility model relates to the related technical field of biochar, in particular to a waste straw and plastic film residue biochar preparation device which comprises a conveying belt, a smashing mechanism is arranged on the upper surface of the conveying belt, and a waste gas treatment mechanism is arranged on the surface of one side of a cooling box. According to the waste straw and residual film biochar preparation device, through the arrangement of the waste gas treatment mechanism, during use, waste gas is discharged into the shell after being cooled by the cooling box, the waste gas passes through a sieve plate, some large impurities and dust in the waste gas can be blocked and filtered by the sieve plate, and then the waste gas can enter a filter element; the high-adsorption material in the filter element can adsorb invisible harmful substances in the waste gas and purify the waste gas, one part of the waste gas treated by the filter element meets the standard and is discharged into the air through the air outlet, the other part of the waste gas is discharged into the air pipeline, the fan is started, the gas is conveyed into the carbonization box again for secondary utilization, and the waste gas is recycled. The pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to biochar, and in particular to a device for preparing biochar from waste straw and residual film. Background Art

[0002] Biochar is a type of charcoal that is used as a soil conditioner. It can help plants grow and can be used for agricultural purposes as well as carbon collection and storage. It is different from traditional charcoal that is generally used as fuel. The annual straw production in rural my country is about 700 million tons. Turning it into biochar is one of the effective ways to utilize straw. Therefore, there is a special need for a waste straw residue biochar preparation device.

[0003] However, the existing waste straw and film biochar preparation devices will produce certain waste gas during the carbonization process. If these waste gases are directly discharged into the air without treatment, they will cause certain pollution and increase the content of harmful components in the air. Utility Model Content

[0004] The purpose of the utility model is to provide a biochar preparation device for waste straw and residual film, so as to solve the problem that the existing biochar preparation device for waste straw and residual film proposed in the above background technology will produce certain waste gas during the carbonization process. If these waste gases are directly discharged into the air without treatment, they will cause certain pollution and lead to an increase in the content of harmful components in the air.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste straw residual film biochar preparation device, comprising a conveyor belt, a crushing mechanism is arranged on the upper surface of the conveyor belt, a bracket is arranged on the lower surface of the crushing mechanism, a screw conveyor is fixedly connected to the outer surface of the bracket, a carbonization box is fixedly connected to one side surface of the screw conveyor, a cooling box is fixedly connected to one side surface of the carbonization box, a sifter is fixedly connected to one side surface of the cooling box, and a waste gas treatment mechanism is arranged on one side surface of the cooling box;

[0006] The exhaust gas treatment mechanism includes an outer shell, an air outlet, a sieve plate, a filter element, an air duct and a fan. The outer shell is fixedly connected to one side surface of the cooling box, the air outlet is fixedly connected to the upper surface of the outer shell, the sieve plate is fixedly connected to the inner surface of the outer shell, the filter element is fixedly connected to the inner surface of the sieve plate, the air duct is fixedly connected to the lower surface of the outer shell, and the fan is fixedly connected to one end of the air duct.

[0007] Preferably, the surface of the sieve plate is provided with multiple groups of fine through holes, and the air duct is provided with multiple groups.

[0008] Preferably, the interior of the filter element is filled with high adsorption material, and the filter element is provided with multiple groups on the inner surface of the sieve plate.

[0009] Preferably, the crushing mechanism includes a funnel, a crushing box, a gearbox, a crushing roller and a driving motor, the funnel is fixedly connected to one side surface of the conveyor belt, the crushing box is fixedly connected to the lower surface of the funnel, the crushing box is fixedly connected to one side surface of the crushing box, the gearbox is rotatably connected to the crushing roller on one side surface of the gearbox, and the driving motor is fixedly connected to one side surface of the gearbox.

[0010] Preferably, the gearbox is provided with a plurality of groups on the outer surface of the crushing box, and the crushing rollers are symmetrically arranged with respect to the central axis of the crushing box.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the waste straw residual film biochar preparation device, through the setting of the waste gas treatment mechanism, when in use, the waste gas is cooled by the cooling box and then discharged into the outer shell, the waste gas passes through the sieve plate, some larger impurities and dust in the waste gas will be blocked and filtered by the sieve plate, and then the waste gas will enter the filter element, the high adsorption material in the filter element will adsorb invisible harmful substances in the waste gas and purify the waste gas, a part of the waste gas treated by the filter element that meets the standard will be discharged into the air through the outlet, and the other part will be discharged into the air duct, start the fan, and transport the gas back to the carbonization box for secondary utilization, thereby reducing pollution, and providing a certain amount of air for the carbonization of straw, so that the quality of biochar is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the carbonization box and the cooling box cooperating with each other in the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the crushing box and the crushing roller cooperating with each other in the utility model;

[0015] Figure 4 This is a schematic diagram of the structure in which the sieve plate and the filter element cooperate with each other in the utility model.

[0016] In the figure: 1. conveyor belt; 2. crushing mechanism; 201. funnel; 202. crushing box; 203. gearbox; 204. crushing roller; 205. drive motor; 3. bracket; 4. screw conveyor; 5. carbonization box; 6. cooling box; 7. sifter; 8. exhaust gas treatment mechanism; 801. housing; 802. air outlet; 803. sieve plate; 804. filter element; 805. air duct; 806. fan. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 The utility model provides a technical solution: a waste straw residual film biochar preparation device, comprising a conveyor belt 1, a crushing mechanism 2 is arranged on the upper surface of the conveyor belt 1, a bracket 3 is arranged on the lower surface of the crushing mechanism 2, a screw conveyor 4 is fixedly connected to the outer surface of the bracket 3, a carbonization box 5 is fixedly connected to one side surface of the screw conveyor 4, a cooling box 6 is fixedly connected to one side surface of the carbonization box 5, a sifter 7 is fixedly connected to one side surface of the cooling box 6, and an exhaust gas treatment mechanism 8 is arranged on one side surface of the cooling box 6;

[0019] The exhaust gas treatment mechanism 8 includes a shell 801, an air outlet 802, a sieve plate 803, a filter element 804, an air duct 805 and a fan 806. The shell 801 is fixedly connected to one side surface of the cooling box 6, the air outlet 802 is fixedly connected to the upper surface of the shell 801, the sieve plate 803 is fixedly connected to the inner surface of the shell 801, the filter element 804 is fixedly connected to the inner surface of the sieve plate 803, the air duct 805 is fixedly connected to the lower surface of the shell 801, and one end of the air duct 805 is fixedly connected to the fan 806. By setting the shell 801, the air outlet 802, the sieve plate 803, the filter element 804, the air duct 805 and the fan 806, when using When the exhaust gas is cooled by the cooling box 6, it is discharged into the outer shell 801. The exhaust gas passes through the sieve plate 803. Some larger impurities and dust in the exhaust gas will be blocked and filtered by the sieve plate 803. Then the exhaust gas will enter the filter element 804. The high adsorption material in the filter element 804 will adsorb invisible harmful substances in the exhaust gas and purify the exhaust gas. A part of the exhaust gas treated by the filter element 804 that meets the standard will be discharged into the air through the air outlet 802, and the other part will be discharged into the air duct 805. The fan 806 is started to transport the gas back to the carbonization box 5 for secondary utilization, thereby reducing pollution. It can also provide a certain amount of air for the carbonization of straw, thereby improving the quality of biochar.

[0020] Furthermore, the surface of the sieve plate 803 is provided with multiple groups of fine through holes, and the air duct 805 is provided with multiple groups. Through the setting of the air duct 805, when in use, the air duct 805 connects the shell 801, the fan 806 and the carbonization box 5, so that the air can return to the carbonization box 5 to reduce pollution.

[0021] Furthermore, the interior of the filter element 804 is filled with high adsorption material, and multiple groups of filter elements 804 are arranged on the inner surface of the sieve plate 803. Through the arrangement of the filter element 804, when in use, multiple groups of filter elements 804 perform filtering and adsorption at the same time, so that the air purification effect is better.

[0022] Furthermore, the crushing mechanism 2 includes a hopper 201, a crushing box 202, a gearbox 203, a crushing roller 204 and a driving motor 205. The funnel 201 is fixedly connected to the surface of one side of the conveyor belt 1, the crushing box 202 is fixedly connected to the surface below the funnel 201, the gearbox 203 is fixedly connected to the surface of one side of the crushing box 202, the gearbox 203 is rotatably connected to the crushing roller 204, and the driving motor 205 is fixedly connected to the surface of one side of the gearbox 203. Through the arrangement of the funnel 201, the crushing box 202, the gearbox 203, the crushing roller 204 and the driving motor 205, when in use, the waste straw and residual film will be transported into the funnel 201 through the conveyor belt 1, and the driving motor 205 will be started to drive the gearbox 203 and the crushing roller 204 to rotate. The two sets of crushing rollers 204 can rotate relative to each other to crush the straw, and the gearbox 203 can change the rotation speed of the driving motor 205 so that the crushing roller 204 can crush better.

[0023] Furthermore, the gearbox 203 is provided with multiple groups on the outer surface of the crushing box 202, and the crushing rollers 204 are symmetrically arranged with respect to the central axis of the crushing box 202. Through the arrangement of the gearbox 203, when in use, the gearbox 203 can change the rotation speed of the driving motor 205, so that the crushing rollers 204 can perform better crushing.

[0024] Working principle: waste straw residues will be transported into the hopper 201 through the conveyor belt 1, and the drive motor 205 will be started to drive the gearbox 203 and the crushing roller 204 to rotate. The two sets of crushing rollers 204 can rotate relative to each other to crush the straw. The gearbox 203 can change the speed of the drive motor 205 so that the crushing roller 204 can crush the straw better. After the crushing, the straw will enter the carbonization box 5 through the screw conveyor 4. The carbonization box 5 heats and carbonizes the straw and produces a certain amount of waste gas. After the carbonization is completed, it will enter the cooling box 6. The cooling box 6 will cool the straw and the waste gas. After the waste gas is cooled by the cooling box 6, it will be discharged into the outer shell 801. The waste gas passes through the sieve plate 803, and some larger impurities and dust in the waste gas will be screened out. Plate 803 blocks and filters, and then the exhaust gas will enter the filter element 804. The high adsorption material in the filter element 804 will adsorb invisible harmful substances in the exhaust gas and purify the exhaust gas. A part of the exhaust gas treated by the filter element 804 that meets the standard will be discharged into the air through the outlet 802, and the other part will be discharged into the air duct 805. The fan 806 is started to transport the gas back to the carbonization box 5 for secondary utilization to reduce pollution. It can also provide a certain amount of air for the carbonization of the straw, so that the quality of the biochar is better. After the straw is cooled, it will enter the sifter 7. After the straw is carbonized, crushed pieces and particles of different sizes will appear, which need to be screened and classified to separate biochar of different sizes for subsequent packaging and sales.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing biochar from waste straw residue film, comprising a conveyor belt (1), characterized in that: A crushing mechanism (2) is provided on the upper surface of the conveyor belt (1), a bracket (3) is provided on the lower surface of the crushing mechanism (2), a screw conveyor (4) is fixedly connected to the outer surface of the bracket (3), a carbonization box (5) is fixedly connected to one side surface of the screw conveyor (4), a cooling box (6) is fixedly connected to one side surface of the carbonization box (5), a sifter (7) is fixedly connected to one side surface of the cooling box (6), and an exhaust gas treatment mechanism (8) is provided on one side surface of the cooling box (6); The exhaust gas treatment mechanism (8) comprises a shell (801), an air outlet (802), a sieve plate (803), a filter element (804), an air duct (805) and a fan (806); one side surface of the cooling box (6) is fixedly connected to the shell (801); the upper surface of the shell (801) is fixedly connected to the air outlet (802); the inner surface of the shell (801) is fixedly connected to the sieve plate (803); the inner surface of the sieve plate (803) is fixedly connected to the filter element (804); the lower surface of the shell (801) is fixedly connected to the air duct (805); and one end of the air duct (805) is fixedly connected to the fan (806).

2. The device for preparing biochar from waste straw residue film according to claim 1, characterized in that: The surface of the sieve plate (803) is provided with a plurality of groups of fine through holes, and the air duct (805) is provided with a plurality of groups.

3. The waste straw residual film biochar preparation device according to claim 1 is characterized by: The interior of the filter element (804) is filled with a high-adsorption material, and a plurality of groups of filter elements (804) are arranged on the inner surface of the sieve plate (803).

4. The waste straw residual film biochar preparation device according to claim 1 is characterized by: The pulverizing mechanism (2) comprises a hopper (201), a pulverizing box (202), a gearbox (203), a pulverizing roller (204) and a driving motor (205); the hopper (201) is fixedly connected to one side surface of the conveyor belt (1); the pulverizing box (202) is fixedly connected to the lower surface of the hopper (201); the gearbox (203) is fixedly connected to one side surface of the pulverizing box (202); the pulverizing roller (204) is rotatably connected to one side surface of the gearbox (203); and the driving motor (205) is fixedly connected to one side surface of the gearbox (203).

5. The device for preparing biochar from waste straw residue film according to claim 4, characterized in that: The gearbox (203) is provided in multiple groups on the outer surface of the crushing box (202), and the crushing rollers (204) are symmetrically arranged about the central axis of the crushing box (202).

Images