CN212456864U - Hydrogen-rich energy source machine for kitchen waste - Google Patents

Abstract

The utility model discloses a kitchen waste hydrogen-rich energy machine, which comprises a hot water boiler (1), a kitchen waste processor main body (2), a hot water tank (3) and a hydrogen-rich generating device (4), wherein the kitchen waste processor main body (2) comprises a compression finishing section (21), a crushing section (22), a stirring heating section (23) and a dehydration section (24), a stirring machine (26) is arranged in a stirring cylinder (27) of the stirring heating section (23), a heating water jacket (28) is arranged outside the stirring cylinder (27), the hot water tank (3) supplies water for the heating water jacket (28) through a hot water circulating pump (35) and a hot water pipeline (30), the water in the heating water jacket (28) flows back to the hot water tank (3) through a hot water return pump (36) and a water pipeline (40), the kitchen waste slurry processed by the dehydration section (24) is pumped to a slurry injector (5) through a slurry pump (6) and a slurry pipeline (60), and the hydrogen is sprayed into a combustion chamber of the hot water boiler (1) to be used as biomass fuel for combustion, and the hydrogen-rich generating device (4) sends hydrogen into the combustion chamber of the hot water boiler (1) to support combustion. Can be widely applied to the field of energy combustion.

Description

Hydrogen-rich energy source machine for kitchen waste

Technical Field

The utility model relates to an energy combustor especially relates to a rich hydrogen energy source machine of kitchen garbage.

Background

Environmental problems such as global climate change, acid rain pollution, ozone depletion, trans-environmental transfer and diffusion of toxic and harmful chemicals and wastes, sharp reduction of biodiversity, marine pollution have become serious challenges for human beings. The garbage is generated along with the production mode and the daily life process, the huge pressure on the environment and resources is seriously exceeded the natural self-cleaning capacity, and the garbage poses great threats to the ecology, the resources and the human health.

The existing main garbage treatment technologies comprise anaerobic fermentation, aerobic fermentation, composting and the like, but the existing garbage treatment technologies generally have the defects of slow reaction, long consumed time, low efficiency, narrow applicability, more residues, secondary pollution and the like. The kitchen waste refers to food waste, food residues, food processing waste, inedible animal and vegetable oil and fat and various oil-water mixtures in families, schools, institutions, public dining halls and catering industries, and is part of municipal domestic waste. Particularly, the treatment pressure of domestic garbage such as kitchen garbage is increased day by day, and the realization of garbage reduction, recycling and harmless treatment is a difficult problem in the environmental protection field.

Due to the diet culture and the catering habits, the kitchen waste has a unique phenomenon in China, a large amount of kitchen waste is generated every day, and the kitchen waste is also generated in places such as catering hotels and the like. The kitchen waste is easy to decay and deteriorate, bad smell which is difficult to accept by people can be generated, and the kitchen waste generated in the catering industry contains a lot of residual vegetable soup and the like, so that the kitchen waste is easy to leak in mobile phones and transportation, and the environment is influenced. The direct landfill treatment of the kitchen waste can cause serious pollution to underground water. The kitchen waste rich in nutrition is a precious renewable resource, but because sufficient attention is not paid yet and the disposal method is improper, the kitchen waste becomes a potential hazard source influencing food safety and ecological safety. The kitchen waste has the characteristics of waste and resources, and is a typical resource which is misplaced.

At present, the main modes of kitchen waste treatment in China are as follows:

1. the crushing and direct discharging treatment is a main method for treating a small amount of dispersed kitchen waste in European and American countries, and is characterized in that the kitchen waste is directly crushed and crushed at a kitchen waste generating point, then is discharged into an urban municipal sewer network by adopting hydraulic flushing, and is combined with municipal sewage to enter an urban sewage treatment plant for centralized treatment. The method has the advantages of low price, simple and convenient technology and the like for treating a small amount of scattered kitchen waste such as household kitchen waste, can reduce the water content of the municipal waste, reduces the collection amount, and is beneficial to improving the heat productivity of the municipal waste.

2. Landfill treatment, in which kitchen waste and common waste in many areas of China are sent into a landfill site together for landfill treatment. Landfill is the main treatment mode of harmless treatment of domestic garbage in most countries. The kitchen waste contains a large amount of degradable components, has short stabilization time, is beneficial to the recovery of a waste landfill site, and is simple and convenient to operate, so that the kitchen waste is more commonly applied. With the increasingly wide knowledge of the availability of kitchen waste, the landfill rate of the kitchen waste is on the trend of decreasing no matter in europe, the united states, japan or china, and even many countries prohibit the kitchen waste from entering a landfill site for treatment.

3. The fertilizer treatment mainly comprises aerobic composting and anaerobic digestion. Aerobic composting is that under aerobic condition, extracellular enzyme secreted by aerobic microbe is used to decompose organic solid into soluble organic matter, which then permeates into cell to realize the whole composting process through metabolism of microbe. Meanwhile, similar methods are introduced by aerobic composting, for example, earthworm composting is a new technology developed in recent years, earthworms are used for swallowing a large amount of kitchen waste, the kitchen waste is mixed with soil, and organic matters are converted into nutrient substances which can be utilized by self or other organisms through the mechanical grinding effect of a sand bag and the biochemical effect in intestinal tracts. Anaerobic digestion treatment of kitchen waste refers to that under specific anaerobic conditions, microorganisms decompose organic waste, wherein carbon, hydrogen and oxygen are converted into methane and carbon dioxide, and elements such as nitrogen, phosphorus and potassium are remained in residues and are converted into a form which is easily absorbed and utilized by animals and plants.

4. The feed is treated in a feed mode, the current feed has huge market potential, and due to the fact that the kitchen waste is used as a raw material, the feed is low in price, large in supply quantity, rich in product nutrition, large in profit interval range and strong in market competitiveness. There are two ways of feed processing: 1, biologically treating to prepare feed, adding cultured strains into the kitchen waste for sealed storage, breeding the strains and killing pathogenic bacteria to prepare the feed; 2 preparing the feed by high-temperature disinfection, killing viruses at high temperature, crushing and processing into the feed for livestock and poultry to eat.

5. The energy treatment is rapidly emerging in recent years, and mainly includes an incineration method, a thermal decomposition method, fermentation hydrogen production, and the like. The incineration method is high in efficiency of treating the kitchen waste, about 5% of residues beneficial to disposal are finally generated, the incineration is carried out in a special incinerator, and the generated heat energy can be converted into hot water or electric energy, so that the recycling of energy is realized, but the water content of the kitchen waste is high, and the heat value is low. The energy treatment of the kitchen waste is of increasing concern.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a handle kitchen garbage hydrogen-rich energy machine effectual, use cost low, practice thrift the energy consumption, that the feature of environmental protection is good.

The utility model adopts the technical proposal that: the utility model comprises a hot water boiler, a kitchen waste processor main body, a hot water tank and a hydrogen-rich generator, the hot water boiler is provided with a hot water outlet which is communicated with the hot water tank, the kitchen waste disposer body sequentially comprises a compression finishing section, a crushing section, a stirring and heating section and a dehydration section, a stirring machine is arranged in a stirring cylinder of the stirring and heating section, a heating water jacket is arranged outside the stirring cylinder, the hot water tank supplies water to the heating water jacket through a hot water supply pipeline by a hot water circulating pump, the water in the heating water jacket flows back to the hot water tank through a hot water return pump and a return pipeline, the pasty kitchen waste treated by the dewatering section is pumped to a slurry ejector through a slurry pump and a slurry pipeline, and the hydrogen-rich gas is sprayed into a combustion chamber of the hot water boiler through the slurry injector to be used as biomass fuel for combustion, and the hydrogen-rich gas generating device sends hydrogen into the combustion chamber of the hot water boiler for combustion supporting.

The kitchen waste processor main part is still including being located oil-water separation section behind the dehydration section, warp oil after the oil-water separation section is handled sends through the oil pump through oil pipe way pump to the thick liquids sprayer, and pass through the thick liquids sprayer spouts into burn as biomass fuel in the combustion chamber of boiler.

The oil-water separation section is also provided with a sewage discharge pipeline for discharging sewage.

The hot water boiler is provided with a smoke exhaust pipe, a smoke heat recoverer is arranged in the smoke exhaust pipe, and the smoke heat recoverer is respectively communicated with the hot water tank and a hot water supply pipeline behind an outlet of the hot water circulating pump through a smoke hot water circulating pipeline.

The flue gas heat recoverer is a flue gas condenser.

The hot water boiler and the hydrogen-rich generating device respectively feed water through a water inlet pipeline provided with a water inlet pump.

The hydrogen-rich generating device is an electrolytic hydrogen-rich generator.

The hot water outlet is also connected with a hot water use water supply pipeline.

The dehydration section includes screw extrusion hydroextractor, dehydration motor, dehydration reducing gear box, screw extrusion hydroextractor includes extrusion screw, feeder hopper, goes out the feed bin, extrusion screw's radial dimension certainly the feeder hopper to go out the feed bin direction by little grow, the extrusion screw periphery is equipped with filter screen cloth, filter screen cloth bottom is equipped with the drain that is used for discharging extrusion back sewage, it passes through to go out the feed bin the thick liquids pipeline inserts the thick liquids pump.

The outer wall of the extrusion screw is provided with continuous helical blades, and the pitch of the continuous helical blades is from the feed hopper to the discharge bin direction is changed from big to small.

The utility model has the advantages that: because the utility model comprises a hot water boiler, a kitchen waste processor main body, a hot water tank and a hydrogen-rich generator, the hot water boiler is provided with a hot water outlet which is communicated with the hot water tank, the kitchen waste disposer body sequentially comprises a compression finishing section, a crushing section, a stirring and heating section and a dehydration section, a stirring machine is arranged in a stirring cylinder of the stirring and heating section, a heating water jacket is arranged outside the stirring cylinder, the hot water tank supplies water to the heating water jacket through a hot water supply pipeline by a hot water circulating pump, the water in the heating water jacket flows back to the hot water tank through a hot water return pump and a return pipeline, the pasty kitchen waste treated by the dewatering section is pumped to a slurry ejector through a slurry pump and a slurry pipeline, the hydrogen-rich gas is sprayed into a combustion chamber of the hot water boiler through the slurry injector to be used as biomass fuel for combustion, and the hydrogen-rich generating device sends hydrogen into the combustion chamber of the hot water boiler for combustion supporting; the utility model overcomes the defects and deficiencies of the prior art, makes full use of the condition that hot water has a hot water boiler in environmental places such as kitchens, and utilizes the hot water generated by the hot water boiler to provide heat energy for the stirring and heating before the kitchen waste is dehydrated according to local conditions so as to heat the materials to more than 60 ℃, thereby avoiding the materials from being too sticky, leading the preheated kitchen waste to be easier to improve the dehydration rate, being beneficial to extruding the moisture in the kitchen waste, especially non-free water, improving the utilization rate of the kitchen waste combustion, avoiding the electric energy consumption brought by using electric heating for preheating, saving electricity and energy, reducing the use cost, being beneficial to subsequent pumping, in addition, taking the dehydrated pasty kitchen waste as fuel, sending the fuel back to the hot water boiler for combustion, not only being capable of well treating and converting the kitchen waste on site, having extremely high treatment speed, avoiding the existing transportation and treatment which are complicated in later period, the waste is changed into valuable, the heat value of biomass organic matters in the kitchen waste is fully utilized, the fuel of the hot water boiler is saved, the hot water boiler becomes hot water burning and a waste combustor, the hydrogen-rich generation device is adopted to send hydrogen into a combustion chamber of the hot water boiler for combustion supporting, the hydrogen is used as a high-quality clean energy source, is the most potential substitute energy source generally considered, is beneficial to completely dry and press the kitchen waste in the hot water boiler and is converted into heat energy, the harmless treatment and resource utilization of the kitchen waste are realized, and multiple purposes are achieved; the event the utility model discloses it is effectual to handle kitchen garbage, and use cost is low, practices thrift the energy consumption, and the feature of environmental protection is good.

Because the kitchen waste processor main body also comprises an oil-water separation section positioned behind the dehydration section, oil treated by the oil-water separation section is pumped to the slurry injector through an oil pump and an oil pipeline, and is injected into a combustion chamber of the hot water boiler through the slurry injector to be used as biomass fuel for combustion; the utility model discloses further make full use of the grease composition among the kitchen garbage, also regard it as the fuel burning, help the environmental protection when energy-conserving, avoid the grease to discharge the pollution that brings, further save boiler fuel, reduced use cost, the feature of environmental protection is good.

Because the hot water boiler is provided with a smoke exhaust pipe, a smoke heat recoverer is arranged in the smoke exhaust pipe, and the smoke heat recoverer is respectively communicated with the hot water tank and a hot water supply pipeline behind the outlet of the hot water circulating pump through a smoke hot water circulating pipeline; the utility model discloses the high temperature waste heat that the flue gas that further utilization boiler work produced carried is used for providing heat energy for the stirring heating before the kitchen garbage dehydration, and is further energy-conserving, has also avoided heat energy to be wasted by vain, has avoided causing the thermal damage to the environment, so the utility model discloses further reduce use cost, practice thrift the energy consumption, the feature of environmental protection is good.

The radial size of the extrusion screw rod is changed from small to large from the feed hopper to the discharge hopper, the outer wall of the extrusion screw rod is provided with continuous helical blades, and the pitch of the continuous helical blades is changed from large to small from the feed hopper to the discharge hopper; the utility model discloses an adopt the extrusion screw of variable diameter of axle, variable pitch for the material progressively receives bigger and bigger extrusion force in extrusion process, thereby reaches solid-liquid separation's purpose, and it does not receive the influence of material nature and regional diet difference, both can handle the kitchen garbage after the breakage, also can handle the kitchen garbage of original ecology, can reach maximum dehydration, deoiling effect.

Drawings

Fig. 1 is a schematic view of the overall structure of a hydrogen-rich energy machine for kitchen waste according to an embodiment of the present invention;

figure 2 is a schematic structural diagram of a dewatering section according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 and fig. 2, the hydrogen-rich energy source machine for kitchen waste of this embodiment includes a hot water boiler 1, a main body 2 of the kitchen waste processor, a hot water tank 3, and a hydrogen-rich generator 4, wherein the hot water boiler 1 is provided with a hot water outlet 9, the hot water outlet 9 leads into the hot water tank 3, the hot water outlet 9 is further connected with a hot water supply pipeline 20 for supplying hot water to other places such as a kitchen, the main body 2 of the kitchen waste processor sequentially includes a compression finishing section 21, a crushing section 22, a stirring heating section 23, and a dewatering section 24, the compression finishing section 21 is used for reducing the volume of the kitchen waste and preliminarily extruding free water in the kitchen waste, the crushing section 22 is used for crushing the kitchen waste after preliminary finishing and dewatering to make the kitchen waste into fine and dispersed viscous slurry, a stirrer 26 is provided in a stirring cylinder 27 of the stirring heating section 23, and a heating water jacket 28 is provided outside the stirring cylinder 27, hot-water tank 3 does through hot water supply pipe way 30 through hot water circulating pump 35 heating water jacket 28 supplies water, water in the heating water jacket 28 flows back through return water pipe way 40 through hot water return pump 36 in the hot-water tank 3, pulpiness kitchen garbage after dehydration section 24 handles passes through thick liquids pump 6 and pumps to thick liquids sprayer 5 through thick liquids pipe way 60, and passes through thick liquids sprayer 5 spout into in boiler 1's the combustion chamber burns as biomass fuel, thick liquids sprayer 5 can adopt the venturi sprayer, rich hydrogen generating device 4 sends into hydrogen be used for combustion-supporting in boiler 1's the combustion chamber, rich hydrogen generating device 4 is electrolytic rich hydrogen generator, dehydration section 24 includes screw extrusion hydroextractor 91, dehydration motor 92, dehydration reducing gear box 93, screw extrusion hydroextractor 91 includes extrusion screw 98, feeder hopper 94, The radial size of the extrusion screw 98 is changed from small to large from the feed hopper 94 to the discharge hopper 96, a filter screen 97 is arranged on the periphery of the extrusion screw 98, a sewage discharge outlet 95 for discharging extruded sewage is arranged at the bottom of the filter screen 97, the discharge hopper 96 is connected to the slurry pump 6 through the slurry pipeline 60, a continuous helical blade 99 is arranged on the outer wall of the extrusion screw 98, and the pitch of the continuous helical blade 99 is changed from large to small from the feed hopper 94 to the discharge hopper 96; the kitchen waste processor main body 2 further comprises an oil-water separation section 25 located behind the dehydration section 24, oil treated by the oil-water separation section 25 is pumped to the slurry injector 5 through an oil pump 7 through an oil pipeline 70 and is injected into a combustion chamber of the hot water boiler 1 through the slurry injector 5 to be burnt as biomass fuel, and the oil-water separation section 25 is further provided with a sewage discharge pipeline 80 for discharging sewage; the hot water boiler 1 is provided with a smoke exhaust pipe 8, a smoke heat recoverer 51 is arranged in the smoke exhaust pipe 8, the smoke heat recoverer 51 is respectively communicated with the hot water tank 3 and a hot water supply pipeline 30 behind the outlet of the hot water circulating pump 35 through a smoke hot water circulating pipeline 50, the smoke heat recoverer 51 is a smoke condenser, not only can sensible heat of smoke in the smoke exhaust pipe 8 be fully absorbed, but also latent heat of the smoke can be absorbed, and therefore the waste heat recovery utilization rate is higher; the hot water boiler 1 and the hydrogen-rich generator 4 respectively feed water through a water inlet pipeline 10 provided with a water inlet pump 15; the utility model discloses in, all should set up corresponding valve device and relevant sensor devices such as temperature, water level as required on each pipeline to in control, this is that technical personnel in the field can set up and adjust as required, no longer gives unnecessary details here.

When the screw extrusion dehydrator 91 works, after materials enter the feed hopper 94, partial free water in the materials is separated from solid kitchen waste under the action of gravity, the materials are discharged through the filter screen 97, the rest kitchen waste is decelerated by the dehydration motor 92 through the dehydration reduction box 93 to drive the extrusion screw 98 to rotate, so that the materials are pushed to the discharge end, the extrusion screw 98 is of a variable-pitch and variable-shaft-diameter structure, the volume between pitches is gradually reduced, when the continuous helical blades 99 push the materials to move forwards, the materials are extruded along with the reduction of the pitches and the increase of the shaft diameters, under the action of the reduction of the pitches and the variable distances, the materials in the screw extrusion dehydrator 91 are subjected to great pressure, the liquid part in the materials is extruded, namely, an oil-water mixture and partial fine slag flow out through the filter screen 97, and discharged through the drain 95, while the slurry solid waste is collected in the discharge bin 96 and pumped back to the hot water boiler 1 by the slurry pump 6.

The utility model overcomes the defects and deficiencies of the prior art, makes full use of the condition that hot water has a hot water boiler in environmental places such as kitchens, and utilizes the hot water generated by the hot water boiler to provide heat energy for the stirring and heating before the kitchen waste is dehydrated according to local conditions so as to heat the materials to more than 60 ℃, thereby avoiding the materials from being too sticky, leading the preheated kitchen waste to be easier to improve the dehydration rate, being beneficial to extruding the moisture in the kitchen waste, especially non-free water, improving the utilization rate of the kitchen waste combustion, avoiding the electric energy consumption brought by using electric heating for preheating, saving electricity and energy, reducing the use cost, being beneficial to subsequent pumping, in addition, taking the dehydrated pasty kitchen waste as fuel, sending the fuel back to the hot water boiler for combustion, not only being capable of well treating and converting the kitchen waste on site, having extremely high treatment speed, avoiding the existing transportation and treatment which are complicated in later period, the waste is changed into valuable, the heat value of biomass organic matters in the kitchen waste is fully utilized, the fuel of the hot water boiler is saved, the hot water boiler becomes hot water burning and a waste combustor, the hydrogen-rich generation device is adopted to send hydrogen into a combustion chamber of the hot water boiler for combustion supporting, the hydrogen is used as a high-quality clean energy source, is the most potential substitute energy source generally considered, is beneficial to completely dry and press the kitchen waste in the hot water boiler and is converted into heat energy, the harmless treatment and resource utilization of the kitchen waste are realized, and multiple purposes are achieved; in addition, the utility model further makes full use of the grease component in the kitchen waste, and the grease component is also used as fuel for combustion, thereby being beneficial to environmental protection while saving energy, avoiding pollution caused by grease discharge, further saving boiler fuel, reducing use cost and having good environmental protection; the utility model further utilizes the high temperature waste heat carried by the flue gas generated by the hot water boiler to provide heat energy for the stirring and heating before the kitchen waste is dehydrated, thereby further saving energy, avoiding the waste of heat energy and avoiding the heat damage to the environment; therefore, the utility model discloses it is effectual to handle kitchen garbage, and use cost is low, practices thrift the energy consumption, and the feature of environmental protection is good.

The utility model discloses but wide application in energy burning field.

Claims (10)

1. The utility model provides a rich hydrogen energy source machine of kitchen garbage which characterized in that: comprises a hot water boiler (1), a kitchen waste processor main body (2), a hot water tank (3) and a hydrogen-rich generating device (4), wherein the hot water boiler (1) is provided with a hot water outlet (9), the hot water outlet (9) leads into the hot water tank (3), the kitchen waste processor main body (2) sequentially comprises a compression finishing section (21), a crushing section (22), a stirring heating section (23) and a dewatering section (24), a stirring machine (26) is arranged in a stirring cylinder (27) of the stirring heating section (23), a heating water jacket (28) is arranged outside the stirring cylinder (27), the hot water tank (3) supplies water for the heating water jacket (28) through a hot water supply pipeline (30) by a hot water circulating pump (35), and the water in the heating water jacket (28) flows back into the hot water tank (3) through a water return pipeline (40) by a hot water return pump (36), slurry kitchen garbage after dehydration section (24) are handled passes through slurry pump (6) and pumps to slurry sprayer (5) through slurry pipeline (60), and passes through slurry sprayer (5) are spouted into burn as biomass fuel in the combustion chamber of hot water boiler (1), hydrogen-rich generating device (4) are sent into hydrogen is used for combustion-supporting in the combustion chamber of hot water boiler (1).

2. The kitchen waste hydrogen-rich energy machine according to claim 1, characterized in that: kitchen garbage processor main part (2) are still including being located oil water separation section (25) behind dehydration section (24), warp oil after oil water separation section (25) are handled passes through oil pump (7) through oil pipeline (70) pump send to thick liquids sprayer (5), and pass through thick liquids sprayer (5) are spouted into as biomass fuel burning in the combustion chamber of boiler (1).

3. The kitchen waste hydrogen-rich energy machine according to claim 2, characterized in that: the oil-water separation section (25) is also provided with a sewage discharge pipeline (80) for discharging sewage.

4. The kitchen waste hydrogen-rich energy machine according to claim 1, characterized in that: the hot water boiler (1) is provided with a smoke exhaust pipe (8), a smoke heat recoverer (51) is arranged in the smoke exhaust pipe (8), and the smoke heat recoverer (51) is respectively communicated with the hot water tank (3) and a hot water supply pipeline (30) behind an outlet of the hot water circulating pump (35) through a smoke hot water circulating pipeline (50).

5. The kitchen waste hydrogen-rich energy machine according to claim 4, characterized in that: the flue gas heat recoverer (51) is a flue gas condenser.

6. The kitchen waste hydrogen-rich energy machine according to any one of claims 1 to 5, characterized in that: the hot water boiler (1) and the hydrogen-rich generating device (4) respectively feed water through a water inlet pipeline (10) provided with a water inlet pump (15).

7. The kitchen waste hydrogen-rich energy machine according to claim 1, characterized in that: the hydrogen-rich generator (4) is an electrolytic hydrogen-rich generator.

8. The kitchen waste hydrogen-rich energy machine according to any one of claims 1 to 5, characterized in that: the hot water outlet (9) is also connected with a hot water use water supply pipeline (20).

9. The kitchen waste hydrogen-rich energy machine according to claim 1, characterized in that: dewatering section (24) include screw extrusion hydroextractor (91), dehydration motor (92), dehydration reducing gear box (93), screw extrusion hydroextractor (91) is including extrusion screw rod (98), feeder hopper (94), play feed bin (96), the radial dimension of extrusion screw rod (98) certainly feeder hopper (94) to go out feed bin (96) direction by little grow, extrusion screw rod (98) periphery is equipped with filter screen (97), filter screen (97) bottom is equipped with drain (95) that are used for discharging extrusion back sewage, it passes through to go out feed bin (96) thick liquids pipeline (60) inserts thick liquids pump (6).

10. The kitchen waste hydrogen-rich energy machine according to claim 9, characterized in that: the outer wall of the extrusion screw rod (98) is provided with a continuous helical blade (99), and the pitch of the continuous helical blade (99) is from the feed hopper (94) to the discharge bin (96) from big to small.

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