Dry anaerobic feeding system
By introducing components such as a mixing tank, screw feeder, agitator, steam heating, and sand removal screw into the dry anaerobic fermentation feeding system, the problems of feed blockage and impurity removal were solved, achieving efficient conveying of straw materials and inoculum return, and improving the gas production efficiency and automation level of the anaerobic fermentation system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIXING ENERGY ENVIRONMENTAL PROTECTION TECH
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-10
AI Technical Summary
Existing dry anaerobic fermentation feeding systems are prone to clogging and have difficulty efficiently transporting agricultural waste containing sand and gravel impurities, especially straw-like materials.
The design employs a combination of a mixing tank, a screw feeder, an agitator, a steam heating pipe, a sand removal screw, and a return pipe to achieve material mixing, heating, impurity removal, and microbial reflux, ensuring that the material undergoes biodegradation at 35-38℃.
The problem of feed blockage has been solved, enabling efficient transportation of materials containing sand and gravel impurities and ensuring sufficient microbial inoculum, thereby improving the gas production efficiency and automation level of the anaerobic fermentation system.
Smart Images
Figure CN224105813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of organic solid waste anaerobic fermentation treatment, in particular to a dry anaerobic feeding system. BACKGROUND
[0002] Organic solid waste generally refers to organic waste with a water content of less than 85%-90% and biodegradability, which generally has biodegradability. These wastes contain a large amount of biomass energy, and effective utilization of these biomass energy is of great significance to the realization of environmental and economic sustainable development. Organic solid waste generally includes straw, livestock and poultry manure, household garbage, municipal sludge, etc., and anaerobic fermentation technology can be used to effectively utilize the biomass energy contained in organic solid waste.
[0003] At present, there are three kinds of dry anaerobic fermentation feeding systems: screw conveying feeding system, star type discharge feeding system and automatic feeding and discharging system. The screw conveying feeding system is provided with a screw conveyor extending from the feeding end to the discharging end at the bottom of the fermentation tank, and the material is conveyed to the discharging end through the screw conveyor. The screw conveying feeding system is suitable for large-scale dry anaerobic fermentation and can efficiently convey materials, but the effect of conveying agricultural waste such as straw is poor. The star type discharge feeding system is provided with a star type discharge device at the bottom of the feeding hopper. This device is usually located below the output end of the feeding conveyor and is used to control the flow and uniform distribution of the feed. The star type discharge feeding system is suitable for scenarios that require precise control of material flow, but the star type discharge feeding system cannot convey materials with high impurity content. The automatic feeding and discharging system includes a fermentation tank with a feeding port at the top of the feeding end and a discharging port at the bottom of the discharging end. The feeding port is provided with a feeding hopper having a star type discharge device at the bottom, and the discharging port is provided with an openable and closable discharging port baffle. This system realizes automatic and continuous feeding and discharging, greatly saves the construction and operation cost of dry fermentation engineering, and improves the efficiency of biogas engineering feeding and discharging. The automatic feeding and discharging system is suitable for occasions that require high automation and continuous operation, but there may be problems of feeding difficulty and feeding blockage. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the problems of feeding difficulty and blockage of the existing dry anaerobic fermentation feeding system, the present application provides a dry anaerobic feeding system.
[0005] The dry anaerobic feeding system provided by the present application adopts the following technical scheme:
[0006] The utility model provides a dry anaerobic feeding system, including mixing component and discharging component, the mixing component includes mixing pool, and the outer wall of one side of mixing pool is obliquely installed with spiral feeder who links with mixing pool, the inner wall of one side of mixing pool is rotatably installed with the stirrer who sets up horizontally, the outer wall of the bottom of mixing pool is provided with a plurality of discharge pipe who links with mixing pool, a plurality of discharge pipe and discharging component are connected.
[0007] Through the above technical scheme, the material is mixed by the mixing pool, the material is transported into the mixing pool by the spiral feeder, the material in the mixing pool is mixed and stirred by the stirrer, and the mixed material is transported into the discharging component by the discharge pipe.
[0008] Preferably, the discharging component includes a horizontally arranged discharge screw, and the outer wall of the discharge screw is provided with a plurality of circular openings, and the discharge pipe is connected to the circular openings.
[0009] Through the above technical scheme, the material transported out of the mixing pool is transported out by the discharge screw.
[0010] Preferably, the discharging component further includes a sand removal screw arranged obliquely, and the outer wall of the sand removal screw is provided with a sand removal pipe communicated with the sand removal screw.
[0011] Through the above technical scheme, the material is transported into the sand removal screw by the discharge screw, and the material is transported to the top of the sand removal screw along the spiral groove of the sand removal screw by the rotating screw shaft under the pushing of the spiral blade of the sand removal screw.
[0012] Preferably, the inlet of the sand removal screw and the outlet of the discharge screw are connected by a pipeline.
[0013] Through the above technical scheme, the sand removal screw and the discharge screw are connected by the pipeline, and the material is conveniently transported out.
[0014] Preferably, the bottom inner wall of the mixing pool is fixedly connected with a steam heating pipe, and the steam heating pipe has an L-shaped structure, and the outer wall of the steam heating pipe is provided with a plurality of air holes.
[0015] Through the above technical scheme, steam is sprayed into the mixing pool by the steam heating pipe to heat the material in the mixing pool, the temperature of the material entering the subsequent anaerobic fermentation system is adjusted, the material can be biodegraded in a 35-38℃ mesophilic anaerobic environment, and the full gas production of the anaerobic fermentation system is ensured.
[0016] Preferably, the top outer wall of the mixing pool is provided with a reflux port, and the inner wall of the reflux port is fixedly connected with a reflux pipe.
[0017] By adopting the technical scheme, the reflux pipe is used for reflux of the fermentation liquid, so that sufficient strains are ensured for the subsequent anaerobic fermentation system.
[0018] Preferably, the mixing pool is fixedly connected with a stirring motor on one side of the outer wall, and the output shaft of the stirring motor is fixedly connected with the stirrer.
[0019] By adopting the technical scheme, the stirrer is driven by the stirring motor to stir and mix the materials in the mixing pool.
[0020] To sum up, the present application has at least one of the following beneficial technical effects:
[0021] 1. The present application heats the materials in the mixing pool through the steam heating pipe, adjusts the temperature of the materials entering the subsequent anaerobic fermentation system, ensures sufficient gas production of the subsequent anaerobic fermentation system, and sets a reflux port for reflux of the fermentation liquid, so that sufficient strains are ensured for the subsequent anaerobic fermentation system.
[0022] 2. The present application has a wide range of material conveying through the setting of the screw feeder, especially for straw agricultural waste materials, which can be efficiently conveyed, and has an automatic impurity removal unit through the setting of the discharging assembly, has an automatic impurity removal function, and can convey materials with high impurity content, solves the problems of difficult feeding and feeding blockage in dry anaerobic fermentation. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 It is a whole structure schematic diagram of the dry anaerobic feeding system of the embodiment of the present application;
[0024] Fig. 2 It is a schematic diagram of the mixing pool structure of the embodiment of the present application;
[0025] Fig. 3 It is a schematic diagram of the discharging assembly structure of the embodiment of the present application;
[0026] Reference signs: 1, screw feeder; 2, mixing pool; 3, stirrer; 4, steam heating pipe; 5, discharging pipe; 6, discharging screw; 7, sand removing screw; 8, sand removing pipe; 9, reflux pipe. DETAILED DESCRIPTION
[0027] The following will be described in detail with reference to the accompanying drawings Figs. 1-3 The present application will be further described in detail.
[0028] The embodiment of the present application discloses a dry anaerobic feeding system.
[0029] Reference Figs. 1-3The utility model provides a dry anaerobic feeding system, including mixing component and discharging component, mixing component includes mixing pool 2, and the outer wall of one side of mixing pool 2 is obliquely installed with the spiral feeder 1 being linked with mixing pool 2, and the conveying capacity of spiral feeder 1 is 30m3 / h and diameter is 600mm, and the inner wall of one side of mixing pool 2 is rotatably installed with the horizontal stirrer 3, and the bottom outer wall of mixing pool 2 is provided with a plurality of discharge pipes 5 being linked with mixing pool 2, and a plurality of discharge pipes 5 are connected with discharging component, and the volume of mixing pool is 128 cubic meters, and the size of mixing pool 2 is long x wide x deep = 8m x 4m x 4m, and the stirrer 3 adopts horizontal full-volume stirrer, and the rotating speed is 5-10rpm, and the nominal diameter of discharge pipe 5 is DN300.
[0030] When using, the mixing pool 2 is convenient for mixing materials, the spiral feeder 1 is convenient for conveying materials into the mixing pool 2, the stirrer 3 is directly used for mixing and stirring materials in the mixing pool 2, and the discharge pipe 5 is used for conveying mixed materials into the discharging component.
[0031] Refer to Fig. 1 And Fig. 3 The discharging component includes the horizontal discharge spiral 6, and the outer wall of discharge spiral 6 is provided with a plurality of circular ports, the discharge pipe 5 is connected with the circular port, the conveying capacity of discharge spiral 6 is 30m3 / h, the diameter is 600mm, L=12m, the materials conveyed out of the mixing pool 2 are conveyed out through the discharge spiral 6, the discharging component further includes the inclined sand removing spiral 7, and the outer wall of sand removing spiral 7 is provided with the sand removing pipe 8 being linked with sand removing spiral 7, the sand removing spiral 7 is inclined by 30°, the conveying capacity is 30m3 / h, the diameter is 600mm, L=12m, the materials are conveyed into the sand removing spiral 7 through the discharge spiral 6, under the push of the spiral blade, the rotating spiral shaft conveys the sand and stone in the materials along the spiral groove of sand removing spiral 7 to the top sand removing pipe 8 and discharges, the feeding port of sand removing spiral 7 is connected with the discharge port of discharge spiral 6 through the pipeline, the sand removing spiral 7 and the discharge spiral 6 are connected through the pipeline, and the materials are conveniently conveyed out.
[0032] Refer to Figs. 1-2The inner wall of the bottom of the mixing pool 2 is fixedly connected with a steam heating pipe 4, and the steam heating pipe 4 is of L-shaped structure, a plurality of air holes are formed in the outer wall of the steam heating pipe 4, the steam heating pipe 4 is arranged to spray steam into the mixing pool 2 to heat the materials in the mixing pool 2, the temperature of the materials entering the subsequent anaerobic fermentation system is adjusted, so that the materials can be biodegraded in a mesophilic anaerobic environment at 35-38 DEG C, and the sufficient gas production of the anaerobic fermentation system is ensured, a reflux port is formed in the outer wall of the top of the mixing pool 2, and a reflux pipe 9 is fixedly connected to the inner wall of the reflux port, the nominal diameter of the reflux pipe 9 is DN250, the reflux pipe 9 is used for reflux of the fermentation liquid, so that the subsequent anaerobic fermentation system has sufficient strains, a stirring motor is fixedly connected to the outer wall of one side of the mixing pool 2, and the output shaft of the stirring motor is fixedly connected to the stirrer 3, so that the stirrer 3 is driven by the stirring motor to stir and mix the materials in the mixing pool 2.
[0033] The implementation principle of the feeding system of the dry anaerobic method is as follows: in use, the organic solid waste enters the mixing pool 2 through the screw feeder 1, the mixing pool 2 is provided with a mixing pool stirrer 3, the stirrer is a horizontal full-volume stirrer, so that the materials in the mixing pool 2 are uniformly stirred, and the steam heating pipe 4 is arranged in the mixing pool 2 to heat the mixed materials, the mixed materials are uniformly stirred and preheated in the mixing pool, and then are sent into the anaerobic fermentation tank, the bottom of the mixing pool 2 is provided with 6-8 discharge pipes 5, so that the materials in the mixing pool 2 can enter the bottom discharge screw feeder 6 through the discharge pipes 5, and then are screw-conveyed to the sand removal screw feeder 7 through the bottom discharge screw feeder 6, the materials are conveyed to the top sand removal pipe 8 along the screw groove of the sand removal screw feeder 7 by the rotating screw shaft under the pushing of the screw blades of the sand removal screw feeder 7, and the fermentation liquid reflux liquid is refluxed into the mixing pool 2 through the reflux pipe 9 to mix with the organic solid waste, and meanwhile the function of strain inoculation is achieved, so that the subsequent dry anaerobic fermentation has sufficient strains.
[0034] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.
Claims
1. A dry anaerobic feeding system comprising a mixing assembly and a dosing assembly, characterized in that: The mixing assembly comprises a mixing tank (2), a spiral feeder (1) is obliquely arranged on the outer wall of one side of the mixing tank (2) and is communicated with the mixing tank (2), a horizontally arranged stirrer (3) is rotatably arranged on the inner wall of one side of the mixing tank (2), a plurality of discharge pipes (5) are arranged on the bottom outer wall of the mixing tank (2) and are communicated with the mixing tank (2), and the plurality of discharge pipes (5) are connected with the discharging assembly.
2. A dry anaerobic feed system according to claim 1, wherein: The discharging assembly comprises a horizontally arranged discharge spiral (6), a plurality of circular openings are arranged on the outer wall of the discharge spiral (6), and the discharge pipes (5) are connected with the circular openings.
3. A dry anaerobic feed system according to claim 2, wherein: The discharging assembly further comprises an obliquely arranged sand removing spiral (7), and a sand removing pipe (8) is arranged on the outer wall of the sand removing spiral (7) and is communicated with the sand removing spiral (7).
4. A dry anaerobic feed system according to claim 3, wherein: The feeding port of the sand removing spiral (7) and the discharge port of the discharge spiral (6) are connected through a pipeline.
5. A dry anaerobic feed system according to claim 4, wherein: A steam heating pipe (4) is fixedly connected to the bottom inner wall of the mixing tank (2), the steam heating pipe (4) has an L-shaped structure, and a plurality of air holes are arranged on the outer wall of the steam heating pipe (4).
6. A dry anaerobic feed system according to claim 5, wherein: A reflux port is arranged on the top outer wall of the mixing tank (2), and a reflux pipe (9) is fixedly connected to the inner wall of the reflux port.
7. A dry anaerobic feed system according to claim 6, wherein: A stirring motor is fixedly connected to the outer wall of one side of the mixing tank (2), and an output shaft of the stirring motor is fixedly connected to the stirrer (3).