Kitchen waste pretreatment device

Abstract

The invention discloses a kitchen waste pretreatment device. The kitchen waste pretreatment device comprises a closed shell and a control system. The kitchen waste pretreatment device is characterized in that the upper end of the shell is provided with a feeding funnel and a feeding motor; the shell is internally provided with an automatic sorting device, a biological fermentation drying device, an oil-water separation device, an ionization deodorization device and a gas condensation device; the feeding funnel is communicated with a kitchen waste charge hole of the automatic sorting device through a discharge hole; the automatic sorting device is communicated with a charge hole of the biological fermentation drying device through a kitchen waste outlet; the automatic sorting device is communicated with the oil-water separation device through a liquid outlet; the biological fermentation drying device is communicated with the gas condensation device through a gas exhaust opening; the gas condensation device is communicated with the ionization deodorization device, so that the effects of automatic sorting, rapid fermentation treatment speed, uniform fermentation, rapid heating speed, capability of oxygenating in fermentation, standard gas deodorization and environment protection and no pollution are achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a kitchen waste pretreatment equipment. Background technique [0002] With the development of society and economy, the acceleration of urbanization, and the improvement of living standards, the amount of kitchen waste is increasing day by day, which has exceeded the self-purification ability of the earth and has become a worldwide public hazard: 1. Disease spread and gene mutation. Due to the similar gene sequences of vertebrates, eating each other can easily cause the spread of zoonotic diseases such as mad cow disease, foot-and-mouth disease, avian influenza, and SARS, as well as gene mutations and offspring developmental deformities caused by homologous gene pollution, which can easily induce cancer; 2. Resources waste. The annual output of kitchen waste in my country is about 60 million tons, which is equivalent to the annual production capacity o...

AI Technical Summary

Problems solved by technology

[0004] Described garbage sorting step: At present, to prevent garbage from polluting the environment, garbage bins are usually used for unified collection and unified treatment, while existing garbage processing equipment requires manpower to feed materials in the process of adding garbage. During the process, the stench from the fermentation and deterioration of garbage is unbearable, and it also pollutes the environment

And in the process of processing, these kitchen wastes include rice, flour, food residues, vegetables, animal and vegetable oils, flesh and blood, plastic bags and chopsticks, etc., and sometimes forks, mineral water bottles, coke bottles, beverage bottles, fast food Hard substances such as boxes, in order to separate these hard substances from these kitchen wastes, the non-decomposable substances such as plastic bags, chopsticks, and hard substances are usually separated from the kitchen waste by manual sorting , its advantages are: the sorting is meticulous, and the disadvantage is: the sorting speed is slow, which is not conducive to large-scale treatment. Necessary pollution, in response to the above problems, CN102580850A discloses a pre-sorting device for kitchen waste on the Internet. It is composed of the opening and the fine material output port, and is connected with the inner cylinder through the feeding port. There are bag cutting teeth at the feeding port for cutting the garbage bags containing garbage, and there is also a magnet for collecting metal at the feeding port. The selection device, the inner cylinder and the outer cylinder are fixed together, the separation motor drives the inner cylinder and the outer cylinder to rotate at the same time, the inner wall of the inner cylinder and the outer cylinder are respectively equipped with stirring blades, and the outer cylinder wall is also equipped with oil-water filtration channels. The wall of the inner cylinder is provided with a number of openings for filtering mineral water bottles, coke cans, beverage bottles, fast food boxes, disposable tableware, plastic bags and other coarse waste. The coarse waste passes through the inner cylinder provided on the inner cylinder wall. The mixing blade is transported to the coarse material output port, the fine material falls into the space between the inner cylinder and the outer cylinder through the opening, the oil and water are discharged through the oil-water or rate channel provided on the wall of the outer cylinder, and the remaining kitchen waste is discharged through the outer cylinder. The stirring blades on the wall of the cylinder are transported to the discharge port, and the metal substances are absorbed by the magnetic separation device entering the feed port. The disadvantages are: the structure is unreasonable and not practical. The coating of kitchen waste leads to a small magnetic effect on metals, which is not conducive to adsorption. It can only absorb a small amount of metal substances close to the magnetic separation device, and after adsorption, it is easy to affect the feeding of kitchen waste; Second, in the process of sorting coarse and fine materials, substances such as chopsticks or forks are easy to get stuck in the cavity between the inner cylinder and the outer cylinder, causing blockage, which is not conducive to the classification and separation of kitchen waste output

[0006] After retrieval, CN101480541A discloses a patent application number of 200910076168, and the patent name is an invention patent for a solid-liquid separation device suitable for kitchen waste. Kitchen waste can easily block the drain holes on the wall of the feeding cylinder, resulting in poor solid-liquid separation

[0007] The solid fermentation step: in the prior art, there is a device that uses a biological fermentation tank to process garbage. It is provided with a stirring shaft in the fermentation tank. The bottom is provided with an oxygenation gap along the axis of the stirring shaft. The air enters from the raw material discharge port of the stirring tank and is discharged from the feeding port. The stirring shaft is provided with stirring blades to facilitate the mixing of garbage. Reasonable, cumbersome production. First, the oxygenation gap is set at the bottom of the mixing tank, which is easy to block the material, resulting in insufficient oxygenation and fermentation. Second, the temperature of the mixing tank is not easy to control, and the fermentation time is not fixed, resulting in insufficient fermentation and extremely slow processing efficiency.

[0008] After retrieval, CN2730508A discloses a utility model patent for a garbage sterilization and fermentation treatment device, which includes a treatment tank, a feeding device for feeding the treatment tank and a heat supply generator for supplying heat to the treatment tank. The device is connected to the feed port of the treatment tank, the processing pipe has a feed port at the top and a discharge port at the bottom, at least two agitators are arranged along the horizontal direction of the processing tank, and the inner layer of the processing pipe is provided with heat transfer oil The interlayer, the heat supply generator is connected with the heat transfer oil interlayer and the treatment tank. Although it solves the problem of uniform heating of the fermentation tank, the disadvantage is that the structure is complicated, the heating method is cumbersome, and the above-mentioned kitchen waste cannot be directly dried. During the oxygenated fermentation process, it is necessary to equip an air heat pipe to inflate and ferment the treatment tank, resulting in slow processing speed and unsatisfactory fermentation effect. In addition, during the feeding process, manual feeding is required, resulting in the health of the workers being compromised. ensure

[0009] The odor treatment step: in the process of processing kitchen waste, it is necessary to remove the odor generated in the process of processing garbage, so as to avoid secondary pollution and meet environmental protection requirements. Nowadays, the commonly used deodorization methods mainly include masking Deodorization method, combustion method, solution absorption method, liquid cleaning method, biological and active material adsorption method, etc., the shortcomings of these deodorization methods are: the masking method treats the symptoms but not the root cause, the combustion method consumes a lot of energy, and the high-temperature gas generated causes air pollution , equipment investment is high, the effect of liquid phase adsorption method is often not good, and it is not practical in cold areas. Adsorption deodorization method is a deodorization method that is widely used at present. It refers to the use of activated carbon, molecular sieve or silica gel to eliminate odor A method of physical or chemical adsorption of gas molecules to effectively deodorize, which has the advantages of low cost, simple operation, and wide application range, but conventional activated carbon materials have disadvantages such as poor dynamic adsorption capacity and small adsorption capacity. Can not solve the pollution of high-temperature gas discharge atmosphere

[0010] And, so far, for this complete kitchen waste treatment equipment, there is no device that can automatically load materials during garbage treatment, resulting in an imperfect overall structure. To sum up, so far, the market is in urgent need of a device that can automatically Feeding, automatic sorting, good solid-liquid separation effect, high efficiency, high dehydration rate, fast fermentation processing speed, uniform fermentation, fast heating speed, automatic oxygenation during fermentation, gas deodorization up to standard, environmental protection and pollution-free functions preprocessing equipment

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