Roller aerobic fermentation equipment

Abstract

The utility model belongs to the technical field of solid waste treatment, and particularly relates to roller aerobic fermentation equipment, which comprises a rack, a rotating device fixed on the rack, a roller driven and supported by the rotating device, a feed port and a fan arranged at two ends of the roller, a round hole arranged on the side wall of the roller and a breathable film arranged on the side wall of the roller to form a closed cavity, the breathable film comprises a polytetrafluoroethylene microporous film, so that odor is not volatilized during fermentation, the breathable film can be detached during discharging, fermented materials fall down from the round holes of the roller, the problems of slow discharging and discharged material residues of existing roller fermentation equipment are solved, and the roller fermentation equipment can replace a deodorization and discharging device and is ingenious in design.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste treatment, and in particular relates to a drum aerobic fermentation equipment. Background Art

[0002] Aerobic fermentation involves fermenting organic waste, with the resulting product being used as organic fertilizer. This not only protects the environment but also allows for resource reuse. Existing aerobic composting systems generally use outdoor composting, which can lead to problems such as large volumes of compost material, large floor space requirements, uneven composting, difficulty controlling the composting process, low composting efficiency, and slow composting.

[0003] The advantages of the horizontal drum composting system are short cycle, low pollution, and easy automation. However, the cost of large commercial equipment is very high, the inlet and outlet sealing rubber rings are easily worn, the discharge is slow, and there are problems with organic fertilizer residues inside the drum. Summary of the Invention

[0004] Therefore, the present disclosure provides a drum aerobic fermentation equipment that can at least partially solve the above-mentioned problems, including a frame, a rotating device fixed on the frame, the rotating device drives and supports the drum, a feed port and a fan are provided at both ends of the drum, a circular hole is opened on the side wall of the drum and a breathable membrane is installed to form a closed cavity, and the breathable membrane includes a polytetrafluoroethylene microporous membrane.

[0005] According to some embodiments of the present disclosure, the breathable membrane has three layers, which are formed by pressing a polyester fabric surface layer and an inner layer with a polytetrafluoroethylene microporous membrane middle layer.

[0006] According to some embodiments of the present disclosure, the breathable membrane is provided with a Velcro burr surface on one side and a Velcro soft fleece surface on the other side. During installation, the breathable membrane is wrapped around the roller and the overlapping parts are adhered together.

[0007] According to some embodiments of the present disclosure, the breathable membrane is wrapped around the drum and then fixed on both sides with clamps.

[0008] According to some embodiments of the present disclosure, the diameter of the circular hole ranges from 4 to 8 mm, which is used for fermenting organic fertilizer.

[0009] According to some embodiments of the present disclosure, the diameter of the circular holes ranges from 15 to 18 mm and is used for fermenting oil sludge.

[0010] According to some embodiments of the present disclosure, the breathable membrane is installed on the drum in sections.

[0011] According to some embodiments of the present disclosure, a heat pipe is provided in the drum, and heat-conducting oil flows in the heat pipe to adjust the temperature in the drum.

[0012] According to some embodiments of the present disclosure, the rotating device includes a reducer, a rotating shaft, a support wheel, a rotating ring, and a support ring; the reducer adjusts the rotation of the rotating shaft, and the rotating teeth on the rotating shaft engage with the rotating ring on the roller to drive the roller to rotate; the support ring is pressed on the support wheel to support the roller.

[0013] According to some embodiments of the present disclosure, a spiral lifting plate is provided on the inner wall of the drum for stirring or conveying materials.

[0014] The beneficial effects of the present invention are: by opening a circular hole in the side wall of the drum and installing a breathable membrane to form a closed cavity, odor will not volatilize during fermentation, and the breathable membrane can be removed during unloading, and the fermented material falls from the circular hole of the drum, solving the problems of slow discharge and discharge residue. It can replace the deodorization and discharge device and has an ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention and other preferred further developments will be explained in detail below with reference to the exemplary embodiments schematically shown in the drawings, but the present invention is not limited to the illustrated exemplary embodiments.

[0016] Figure 1 It is a schematic diagram of a drum aerobic fermentation equipment in one embodiment of the present disclosure.

[0017] Figure 2 2 is a perspective view of the interior of a drum in one embodiment of the present disclosure.

[0018] Figure 3 Schematic diagram of the Velcro bristle surface of the breathable membrane in one embodiment of the present disclosure.

[0019] Figure 4 Schematic diagram of the Velcro soft fleece surface of the breathable membrane in one embodiment of the present disclosure.

[0020] Reference numerals shown in the figure: 100, frame; 201, reducer; 202, rotating shaft; 203, rotating gear; 204, fixing part; 205, supporting wheel; 206, rotating ring; 207, supporting ring; 301, inner wall of drum; 302, circular hole; 303, fan; 304, discharge port; 305, feed port; 306, heat transfer oil pipe; 307, spiral copy plate; 400, breathable membrane; 401, Velcro burr surface; 402, Velcro soft fleece surface. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described 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.

[0022] See Figure 1 and Figure 2 A drum aerobic fermentation equipment includes a fan 303, a frame 100, a rotating device and a drum. A circular hole 302 is opened on the outer wall of the drum and a breathable membrane 400 is installed to form a closed cavity.

[0023] The frame 100 supports the drum and rotating mechanism. The drum has a circular hole 302 with a diameter of 4 to 8 mm, suitable for producing organic fertilizer. A spiral lifter 307 is installed on the inner wall 301 of the drum for stirring or conveying materials. A thermal oil pipe 306 is installed inside the drum, flowing through it to heat the materials and maintain the optimal fermentation temperature. Discharge ports 304, feed ports 305, and a fan 303 are located at each end of the drum. The rotating mechanism, used to rotate and support the drum, includes a reducer 201. The reducer 201 regulates the rotation of the rotating shaft 202, which is secured by fixing members 204 on both sides. Rotating teeth 203 on the rotating shaft 202 engage with rotating rings 206 on the drum, driving its rotation. Because the drum is relatively long, a support ring 207 is provided on the drum, pressing against the support wheel 205 to provide support.

[0024] The breathable membrane 400 consists of three layers, consisting of polyester fabric top and back layers, and a polytetrafluoroethylene (PTFE) microporous membrane in the middle. The polyester fabric provides corrosion resistance to fermented products and reinforces the membrane for wear resistance. PTFE microporous membrane is a flexible and elastic microporous material with a high porosity and uniform pore size distribution. It is breathable but impermeable. Since it only allows the passage of small molecules, large gases such as ammonia and hydrogen sulfide produced by fermentation cannot escape through the membrane, effectively controlling odors and eliminating the need for deodorization equipment, which is required in conventional container fermentation equipment.

[0025] See Figure 3 and Figure 4The breathable membrane 400 has a Velcro bristle surface 401 on one side and a Velcro soft fleece surface 402 on the other. During installation, the breathable membrane 400 is wrapped around the drum, with the overlapped portions adhered together. The drum requires frequent feeding and discharging, and each section has a different degree of fermentation. Therefore, the breathable membrane 400 is installed on the drum in sections, with the length of the membrane 400 installed at the discharging end determined by the feed volume. The breathable membrane 400 can be used for discharging. To discharging, simply remove the breathable membrane 400. Fermented material can fall through the circular hole 302 in the drum, while unfermented material remains in the drum because it cannot reach the size of the circular hole 302. The retained discharge port 304 is used to discharge material when the spiral lifter 307 reverses, or to remove larger debris such as glass and plastic that remains in the drum after the breathable membrane 400 is removed.

[0026] In other embodiments, the drum does not have a discharge port 304 to save the cost of the discharge mechanism; for sludge materials, the diameter of the circular hole 302 on the drum is set at 15 to 18 mm; the breathable membrane 400 is wrapped around the drum and fixed on both sides with clamps (not shown in the figure).

Claims

1. A drum aerobic fermentation equipment, comprising a frame, a rotating device and a drum, wherein the rotating device is fixed on the frame, the rotating device drives and supports the drum, and a feed port and a fan are provided at both ends of the drum, characterized in that: A circular hole is provided on the side wall of the drum and a breathable membrane is installed to form a closed cavity, wherein the breathable membrane comprises a polytetrafluoroethylene microporous membrane.

2. A drum aerobic fermentation equipment according to claim 1, characterized in that: The breathable membrane has three layers in total, which are formed by pressing a polyester fabric surface layer and an inner layer and a polytetrafluoroethylene microporous membrane middle layer.

3. The drum aerobic fermentation equipment according to claim 1, characterized in that: The breathable film is provided with a Velcro bristle surface on one side and a Velcro soft fleece surface on the other side. When installed, the breathable film is wrapped around the roller, and the Velcro bristle surface and the Velcro soft fleece surface are adhered together.

4. The drum aerobic fermentation equipment according to claim 3, characterized in that: After the breathable film is wrapped around the drum, clamps are provided on both sides of the breathable film for fixing.

5. The drum aerobic fermentation equipment according to claim 1, characterized in that: The diameter of the circular hole ranges from 4 to 8 mm and is used for discharging organic fertilizer.

6. The drum aerobic fermentation equipment according to claim 1, characterized in that: The diameter of the circular hole ranges from 15 to 18 mm and is used for discharging oil sludge.

7. The drum aerobic fermentation equipment according to claim 1, characterized in that: The breathable membrane is installed on the drum in sections.

8. The drum aerobic fermentation equipment according to any one of claims 1 to 7, characterized in that: A heat conducting pipe is provided in the drum, and heat conducting oil flows in the heat conducting oil pipe for regulating the temperature in the drum.

9. The drum aerobic fermentation equipment according to any one of claims 1 to 7, characterized in that: The rotating device includes a reducer, a rotating shaft, a supporting wheel, a rotating ring and a supporting ring; the reducer adjusts the rotation of the rotating shaft, and the rotating teeth on the rotating shaft engage with the rotating ring to drive the roller to rotate; the supporting ring is pressed on the supporting wheel to support the roller.

10. The drum aerobic fermentation equipment according to any one of claims 1 to 7, characterized in that: The inner wall of the drum is provided with a spiral lifting plate for stirring or conveying materials.

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