CN211367429U - Kitchen waste composting device - Google Patents

Abstract

The utility model discloses a kitchen waste composting device, which belongs to the technical field of resource utilization equipment. The composting device includes a pre-crushing bucket provided in the box body, a first motor is arranged on the box body, the output shaft of the first motor is connected with the crushing shaft, the crushing shaft is provided with a first crushing blade, and the bottom of the pre-crushing bucket is There is a filter screen, and a bacterial liquid spraying mechanism, a humidity sensor and an air supply mechanism are arranged under the filter screen. A controller is also arranged on the outer wall of the box, and the controller is electrically connected with the humidity sensor and the bacterial liquid spraying mechanism; the utility model can pre-pulverize the input material by setting the pre-pulverizing bucket, the first motor, the pulverizing shaft and the first pulverizing blade. The kitchen waste and bran in the bucket are fully crushed. After crushing, the smaller kitchen waste is leaked through the filter screen, which is conducive to bacterial fermentation and accelerates the output efficiency of kitchen waste composting.

Description

A kitchen waste composting device

technical field

The utility model relates to the technical field of resource utilization equipment, in particular to a kitchen waste composting device.

Background technique

Composting is an organic fertilizer made of animal and plant remains and excrement containing fertilizer, mixed with soil and minerals, fermented and decomposed and decomposed by microorganisms under high temperature and high humidity conditions. Under the premise of the improvement of the level and the development of the economy, with the rapid development of the city, a large amount of domestic waste has also been generated correspondingly. Among them, the output of garbage accounts for more than 60% of the total garbage. Resource utilization is imminent.

In the prior art, the treatment methods for kitchen waste mainly adopt anaerobic composting method and aerobic composting method. Anaerobic composting method, as the name implies, isolates the air in a closed environment, and ferments through anaerobic microorganisms. The kitchen waste is decomposed into fertilizer, but this fermentation method has high requirements on the airtightness of the container, the fermentation product is a viscous paste, and the anaerobic fermentation process will produce unpleasant gases and organic acids, so generally No, another aerobic composting method is to use microorganisms such as yeast, actinomycetes and fungi in kitchen waste to biochemically react and decompose organic matter in kitchen waste under the condition of sufficient oxygen. , to form a humus soil fertilizer. Since the aerobic composting method is an exothermic reaction, the temperature of the reactor body will be maintained between 50 °C and 75 °C with the progress of the reaction, so ventilation is required. Although this method does not produce unpleasant gas, the fermentation time of this fermentation method is long, and the fermentation generally takes 6 months or more. Therefore, the design of a kitchen waste composting device with high fermentation efficiency has great practical value.

Utility model content

The purpose of the utility model is to provide a kitchen waste composting device in order to overcome the problems in the prior art.

The utility model provides a kitchen waste composting device, comprising a box body, a first motor is installed on the outer top wall of the box body, the first motor is electrically connected with a first control switch, and the output of the first motor is The shaft is connected with one end of the pulverizing shaft that penetrates into the box in the longitudinal direction from the outer top wall of the box, and the other end of the pulverizing shaft is set in the pre-pulverizing barrel, the pre-pulverizing barrel is set in the box, and the The crushing shaft is provided with a first crushing blade, the bottom of the pre-crushing bucket is provided with a filter screen, and the lower part of the filter screen is provided with a bacterial liquid spray mechanism, a humidity sensor and an air supply mechanism, and the humidity sensor is provided on the inner wall of the box. Above, the air supply mechanism is located at the bottom of the box body, the bacteria liquid spray mechanism is located above the gas supply mechanism, and the outer wall of the box body is also provided with a controller, the controller, the humidity sensor and the bacteria liquid spray mechanism The controller, the humidity sensor and the bacterial liquid spraying mechanism are all electrically connected to the power supply, and the outer wall of the box body is also provided with an exhaust pipe, and the exhaust pipe is provided with a one-way valve.

Preferably, a stirring mechanism is also provided, the stirring mechanism includes a second motor, a stirring shaft and a stirring blade, the stirring shaft is located below the filter screen and above the air supply mechanism, and the stirring shaft is horizontally extended from one side of the box body. It penetrates into the box and is connected with the inner wall of the box through bearings. The stirring shaft outside the box is connected with the output shaft of the second motor. The stirring blades are arranged on the stirring shaft at equal intervals along the length of the stirring shaft. The second motor is electrically connected to a power source through a second control switch.

Preferably, the bacterial liquid spraying mechanism comprises a bacterial liquid storage device, an infusion pipe and a spray head, the bacterial liquid storage device is arranged on the outer top of the box, one end of the infusion pipe is communicated with the bacterial liquid storage device, and the infusion pipe is connected to the bacterial liquid storage device. The other end of the infusion tube is penetrated by the first through hole provided on the outer wall of the box, and its penetration end is communicated with a plurality of nozzles provided in the box body. The infusion tube is also provided with a solenoid valve, which is connected to the control electrical connection.

Preferably, the exhaust pipe is connected to the air inlet of the first air pump provided outside the box, the air outlet of the first air pump is connected with a gas filter, and the other end of the gas filter is communicated with the atmosphere, the The first air pump is electrically connected to the power source through the third control switch.

Preferably, the air supply mechanism includes an air pump and an air supply pipe, the second air pump is arranged outside the box body, the second air pump is communicated with one end of the air supply pipe, and the other end of the air supply pipe is connected by the first air supply pipe provided on the outer wall of the box. The two through holes penetrate into the box body, the air supply pipe in the box body is provided with a plurality of aeration holes, and the second air pump is electrically connected to the power source through the fourth control switch.

Preferably, the top of the box is provided with a kitchen waste feeding hopper and a lime-mixed bran feeding hopper, and the bottom discharge ends of the kitchen waste feeding hopper and the lime-mixed bran feeding hopper are both connected with pre-grinding. The upper opening of the bucket is connected, and the tops of the kitchen waste feeding hopper and the lime-mixed bran feeding hopper are both provided with sealing covers.

Preferably, a compost outlet is provided at the bottom of the box body, and a push-pull baffle is provided on the compost outlet.

Preferably, an observation window is provided on the outer wall of the box.

Preferably, the peripheral wall of the pre-crushing bucket is provided with a second crushing blade, the blade of the second crushing blade is outward, and the back of the second crushing blade is arranged on the pre-crushing barrel.

Preferably, the box body is composed of an inner casing and an outer casing, and the inner casing is arranged inside the outer casing, and the inner casing and the outer casing are provided with a cavity, and the cavity is filled with a thermal insulation material.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The utility model can put the chaff mixed with lime into the pre-grinding bucket from the kitchen waste feeding hopper and the bran feeding hopper by setting the pre-grinding bucket, the first motor, the grinding shaft, the first grinding blade and the filter screen. The kitchen waste is fully pulverized. By setting a second pulverizing blade on the inner wall of the pre-pulverizing bucket, the second pulverizing blade and the first pulverizing blade can cooperate with each other to quickly make the kitchen waste smaller, which is conducive to bacterial fermentation. The bran mixed with lime can not only adjust the pH value of kitchen waste, but also facilitate the reproduction of microbial bacteria and promote the production cycle of kitchen waste composting. The exudate reduces the loss of nitrogen and ensures the fertilizer efficiency of the compost. The bran mixed with lime is mixed with the kitchen waste and fully pulverized to make the two fully contact, which speeds up the output efficiency of the kitchen waste compost.

2. The utility model can provide sufficient oxygen for the aerobic microorganisms in the box by setting the air supply mechanism, ensuring the living conditions of the aerobic microorganisms, and then ensuring the reactivity of the aerobic microorganisms. When composting, ensuring the temperature and humidity in the box during the process of microbial decomposition of kitchen waste is the key to improving the microbial decomposition activity, and the fermentation process of aerobic microorganisms is an exothermic process, so the installation of thermal insulation materials can reduce the composting device. The heat exchange between the inside and the external environment ensures the activity of kitchen waste during the decomposition of microorganisms, and also promotes the rate of microorganisms decomposing kitchen waste. By setting a humidity sensor, the humidity inside the composting device can be detected, and the humidity can be ensured by controlling the humidity. Reactivity, by setting up the microbial liquid spray mechanism can not only improve the humidity of the mixture of kitchen waste and bran, but also increase the total amount of microorganisms, and can also promote the output efficiency of kitchen waste composting.

3. The utility model can regularly discharge the gas produced by fermentation in the box by setting the first air pump and the exhaust pipe to ensure the forward speed of the reaction. environment.

Description of drawings

Fig. 1 is the structural sectional schematic diagram of the present utility model;

FIG. 2 is a schematic structural diagram of the utility model.

Description of reference numbers:

1. Box, 2. Pre-grinding bucket, 3. The first motor, 4. The grinding shaft, 5. The first grinding blade, 6. The filter screen, 7. The bacterial liquid spraying mechanism, 7-1. The bacterial liquid storage device, 7-2. Infusion tube, 7-3. Nozzle, 7-4. Solenoid valve, 8. Humidity sensor, 9. Air supply mechanism, 9-1. Second air pump, 9-2. Air supply pipe, 10. Controller , 11. Stirring mechanism, 11-1. Second motor, 11-2. Stirring shaft, 11-3. Stirring blade, 12. Kitchen waste feeding hopper, 12-1. Bran feeding hopper, 13. Compost outlet, 14. Exhaust pipe, 15. First air pump.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

As shown in Figures 1 to 2, in a kitchen waste composting device provided by the present invention, a first motor 3 (model: YE2100L-14) is installed on the outer top wall of the box body 1, and the first motor 3 and The first control switch is electrically connected, and the output shaft of the first motor 3 is axially connected with one end of the pulverizing shaft 4 that penetrates longitudinally into the box 1 from the outer top wall of the box body 1, and the other end of the pulverizing shaft 4 is set at a preset position. In the crushing barrel 2, the pre-crushing barrel 2 is arranged in the box 1, the crushing shaft 4 located in the pre-crushing barrel 2 is provided with a first crushing blade 5, and the bottom of the pre-crushing barrel 2 is provided with a filter screen 6 , the lower part of the filter screen 6 is provided with a bacterial liquid spray mechanism 7, a humidity sensor 8 and an air supply mechanism 9, the humidity sensor 8 is arranged on the inner wall of the box body 1, and the air supply mechanism 9 is arranged at the bottom of the box body 1, The bacterial liquid spraying mechanism 7 is arranged above the air supply mechanism 9, and the outer wall of the box body 1 is also provided with a controller 10. The controller 10 is electrically connected with the humidity sensor 8 and the bacterial liquid spraying mechanism 7. The controller 10 (Model: UNO2172-C22E), the humidity sensor 8 (DHT-11) and the bacterial liquid spraying mechanism 7 are all electrically connected to the power supply, and an exhaust pipe 14 is also provided on the outer wall of the box body 1. The exhaust pipe 14 There is a one-way valve inside.

In this embodiment, in order to solve the problem that the fermentation rate of aerobic kitchen waste is slow in the prior art, the application adds the kitchen waste and the bran mixed with lime into the pre-grinding bucket 2. Under the rotation of a motor 3, the pulverizing shaft 4 is driven to rotate, so that the first pulverizing blade 5 arranged on the pulverizing shaft 4 can stir and pulverize the kitchen waste and the bran, so that the particle size of the kitchen waste and the bran is smaller. , increase the contact surface of microbial fermentation, and improve the pH value of kitchen waste by adding bran mixed with lime, which is conducive to the reproduction of microorganisms and bacteria, and promotes the production cycle of kitchen waste composting. The leavening agent can absorb the exudate in the kitchen waste, reduce the loss of nitrogen, and ensure the fertilizer efficiency of the compost. In the box 1 below the crushing bucket 2, turn on the control switch of the controller 10 electrically connected to the humidity sensor 8, the humidity sensor 8 starts to work, and the kitchen waste and the lime-mixed bran under the box 1 are measured for fermentation. Changes in humidity. Since the fermentation process of kitchen waste and bran mixed with lime is an exothermic chemical change process, humidity is also a key factor affecting the chemical reaction. When the humidity sensor 8 detects that the box 1 When the humidity of the kitchen waste and the lime-mixed bran below is lower than the normal humidity range required for fermentation, the controller 10 will send a signal, so that the bacterial liquid spraying mechanism 7 electrically connected to the controller 10 starts to work, and the kitchen The residual waste and the lime mixed bran are sprayed with bacterial liquid, which on the one hand improves the humidity of the kitchen waste and the lime mixed bran, and also increases the number of colonies in the kitchen waste and the lime mixed bran, The fermentation efficiency is improved and the fermentation time is shortened. While the humidity sensor 8 and the bacterial liquid spraying mechanism 7 are electrically controlled by the controller 10, the gas supply mechanism 9 is also required to control the kitchen waste and lime mixed at the bottom of the box 1. The bran material is used for gas supply, because the application carries out aerobic fermentation, so ensuring sufficient gas source is the key to the normal fermentation, and the aerobic actinomycetes and yeast in the fermentation process release heat in different stages of fermentation It is different, so the effect of heat on aerobic fermentation is relatively small, carbon dioxide and water will be produced after aerobic fermentation, so the excess gas carbon dioxide needs to be discharged out of the box 1 through the exhaust pipe 14, so as not to affect the normal operation of aerobic fermentation conduct.

In order to further improve the normal progress of aerobic fermentation, it is necessary to stir the pulverized kitchen waste and the lime-mixed bran at the bottom of the box to ensure that the pulverized kitchen waste and the lime-mixed bran can be stirred evenly , to ensure that the aerobic bacteria are distributed evenly during the fermentation process, and the temperature during the fermentation process is balanced. During fermentation, the control switch of the second motor 11-1 is turned on, and the second motor 11-1 rotates to drive the stirring shaft 11-2 to rotate. The rotation of the stirring shaft 11-2 drives the rotation of the stirring blades 11-3, and the rotation of the stirring blades 11-3 also enables the kitchen waste and the lime mixed bran to be fully mixed, so that the fermentation colonies are evenly distributed, the fermentation temperature is balanced, and the fermentation rate is faster. Fast, the fermentation time is shortened, so a stirring mechanism 11 is also provided. The stirring mechanism 11 includes a second motor 11-1 (model: YE2100L-14), a stirring shaft 11-2 and a stirring blade 11-3. The stirring shaft 11- 2 is located below the filter screen 6 and above the air supply mechanism 9, and the stirring shaft 11-2 penetrates into the box body 1 from one side of the box body 1 in the horizontal direction, and is connected with the inner wall of the box body 1 through bearings, located in the box body The stirring shaft 11-2 outside 1 is connected to the output shaft of the second motor 11-1, and the stirring blades 11-3 are arranged on the stirring shaft 11-2 at equal intervals along the length direction of the stirring shaft. The motor 11-1 is electrically connected to the power source through the second control switch.

When spraying the smashed kitchen waste and the lime-mixed bran at the bottom of the box body 1 with the bacterial liquid, the controller 10 sends an electrical signal to the solenoid valve 7-4, and the solenoid valve 7-4 is opened, so that the bacterial liquid is stored The device 7-1 is communicated with the infusion pipe 7-2, and the bacterial liquid in the bacterial liquid storage device 7-1 circulates in the infusion pipe 7-2. The nozzles 7-3 are connected, so the bacterial liquid is sprayed from the nozzles 7-3, which realizes the spraying and humidification of the kitchen waste and the bran mixed with lime in the box 1, and also increases the amount of kitchen waste and mixed with lime. The number of bacterial colonies in the bran material of lime improves the efficiency of aerobic fermentation, so the bacterial liquid spraying mechanism 7 includes a bacterial liquid storage device 7-1, an infusion pipe 7-2 and a spray head 7-3. The storage device 7-1 is arranged on the outer top of the box body 1, one end of the infusion tube 7-2 is communicated with the bacterial liquid storage device 7-1, and the other end of the infusion tube 7-2 is provided by the No. A through hole is penetrated, and its penetration end is communicated with a plurality of spray heads 7-3 provided in the box body 1. The infusion pipe 7-2 is also provided with a solenoid valve 7-4, and the solenoid valve 7- 4 is electrically connected to the controller 10 .

The fermentation reaction in the box 1 will produce carbon dioxide gas after fermentation, and the carbon dioxide gas discharged from the fermentation will have a light odor, so the exhaust pipe 14 on the outer wall of the box 1 is connected to the first air pump 15. The air pump 15 is communicated with the air filter, and the air filter can filter the harmful gas and then discharge it into the atmosphere to pollute the atmosphere. The air inlet is connected, the air outlet of the first air pump 15 is connected with a gas filter (model: FX01-GYQ-80A), and the other end of the gas filter is communicated with the atmosphere, and the first air pump 15 is connected to the air through the third control switch. Power supply electrical connection.

In order to supply air to the air supply mechanism 9, the control switch with the second air pump 9-1 is turned on, the second air pump 9-1 inhales air, and then discharges the inhaled air into the box 1 along the air supply pipe 9-2 , and is discharged from the aeration holes to supply gas to kitchen waste and bran mixed with lime, to provide oxygen to aerobic microorganisms, to promote the decomposition of aerobic microorganisms, and to speed up the fermentation rate, so the said supply The air mechanism 9 includes a second air pump 9-1 (model: SF31-SPV700EH) and an air supply pipe 9-2. The air pump 9-1 is located outside the box 1. The second air pump 9-1 and the air supply pipe 9-2 The other end of the gas supply pipe 9-2 penetrates into the box body 1 through the second through hole provided on the outer wall of the box body 1, and the gas supply pipe 9-2 located in the box body 1 is provided with a plurality of aeration holes , the second air pump 9-1 is electrically connected to the power source through a fourth control switch.

In order to quickly feed the box 1, the kitchen waste is put into the pre-grinding bucket 2 from the kitchen waste feeding hopper 12, and the bran mixed with lime is put into the pre-grinding from the bran feeding hopper 12-1 mixed with lime. Inside the bucket 2, then cover the kitchen waste feeding hopper 12 and the top sealing cover of the lime-mixed bran feeding hopper 12-1 respectively, in order to prevent the kitchen waste and the lime-mixed bran from being sprayed out during pulverization, cause personal injury, so the top of the box body 1 is provided with a kitchen waste feeding hopper 12 and a lime-mixed bran feeding hopper 12-1, a kitchen waste feeding hopper 12 and a lime-mixed bran feeding hopper 12-1 The bottom discharge end of 1 communicates with the upper opening of the pre-grinding bucket 2, and the tops of the kitchen waste feeding hopper 12 and the lime-mixed bran feeding hopper 12-1 are both provided with sealing covers.

In order to facilitate the taking out of the fermented compost, after the fermentation is completed, a compost outlet 13 is provided at the bottom of the box body 1 when opened, and a push-pull baffle plate is provided on the compost outlet 13 .

In order to facilitate the observation of the fermentation condition of the fermented product in the box body 1, the color will change during the fermentation process, so the outer wall of the box body 1 is provided with an observation window.

In order to speed up the pulverization process of the kitchen waste and the lime-mixed bran that are put into the pre-grinding bucket 2, the time required for pulverization is shorter and the pulverization is more thorough. The lime bran is pulverized faster under the combined action of the first pulverizing blade 5 and the second pulverizing blade. When the first pulverizing blade 5 rotates, the material in the pre-pulverizing bucket 2 is rotated by centrifugal force and the inner wall of the pre-pulverizing bucket 2. Extrusion occurs, and the second pulverizing blade is set on the inner wall of the pre-pulverizing barrel 2, so the first pulverizing blade and the second pulverizing blade work together to make the pulverizing process shorter and the pulverization more thorough, so the pre-pulverizing barrel 2 There is a second crushing blade on the peripheral wall of the second crushing blade, the blade of the second crushing blade is outward, and the back of the second crushing blade is set on the pre-crushing barrel 2.

In order to ensure that the temperature in the box 1 does not change during the fermentation process, the box 1 is composed of an inner shell and an outer shell, and the inner shell is arranged inside the outer shell, and the inner shell and the outer shell are provided with The cavity is filled with thermal insulation material.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A kitchen waste composting device, characterized in that it comprises a box body (1), a first motor (3) is installed on the outer top wall of the box body (1), and the first motor (3) is connected with the first motor (3). A control switch is electrically connected, and the output shaft of the first motor (3) is connected to one end of the pulverizing shaft (4) that penetrates into the casing (1) in the longitudinal direction from the outer top wall of the casing (1). The other end of (4) is set in the pre-grinding bucket (2), the pre-grinding bucket (2) is arranged in the box (1), and the crushing shaft (4) located in the pre-grinding bucket (2) is provided with The first pulverizing blade (5), the bottom of the pre-pulverizing bucket (2) is provided with a filter screen (6), and the bottom of the filter screen (6) is provided with a bacterial liquid spraying mechanism (7), a humidity sensor (8) and a supply. Air mechanism (9), the humidity sensor (8) is arranged on the inner wall of the box body (1), the air supply mechanism (9) is arranged at the bottom of the box body (1), and the bacteria liquid spraying mechanism (7) It is arranged above the air supply mechanism (9), and a controller (10) is also provided on the outer wall of the box (1). The controller (10) is electrically connected to the humidity sensor (8) and the bacterial liquid spraying mechanism (7). connection, the controller (10), the humidity sensor (8) and the bacterial liquid spraying mechanism (7) are all electrically connected to the power supply, and the outer wall of the box (1) is also provided with an exhaust pipe (14), the A check valve is provided in the air pipe (14). 2. The kitchen waste composting device according to claim 1, characterized in that, a stirring mechanism (11) is further provided, and the stirring mechanism (11) comprises a second motor (11-1), a stirring shaft (11-1). 2) and the stirring blade (11-3), the stirring shaft (11-2) is located below the filter screen (6) and above the air supply mechanism (9), and the stirring shaft (11-2) is horizontally One side of the body (1) penetrates into the box body (1), and is connected with the inner wall of the box body (1) through a bearing, and the stirring shaft (11-2) located outside the box body (1) is connected to the second motor (11- 1) The output shaft is connected to the shaft, the stirring blades (11-3) are arranged on the stirring shaft (11-2) at equal intervals along the length direction of the stirring shaft, and the second motor (11-1) passes through the second motor (11-1). The control switch is electrically connected to the power source. 3. The kitchen waste composting device according to claim 1, wherein the bacterial liquid spraying mechanism (7) comprises a bacterial liquid storage device (7-1), an infusion pipe (7-2) and a spray head (7-3), the bacterial liquid storage device (7-1) is provided on the outer top of the box (1), and one end of the infusion tube (7-2) is communicated with the bacterial liquid storage device (7-1) , the other end of the infusion tube (7-2) is penetrated by a first through hole provided on the outer wall of the box body (1), and its penetration end is connected to a plurality of spray heads (7) provided in the box body (1). -3) Communication, the infusion pipe (7-2) is also provided with a solenoid valve (7-4), and the solenoid valve (7-4) is electrically connected with the controller (10). 4. The kitchen waste composting device according to claim 1, wherein the exhaust pipe (14) is connected to the air inlet of the first air pump (15) provided outside the box (1) The air outlet of the first air pump (15) is connected with a gas filter, the other end of the gas filter is communicated with the atmosphere, and the first air pump (15) is electrically connected to the power supply through a third control switch. 5. The kitchen waste composting device according to claim 1, wherein the air supply mechanism (9) comprises a second air pump (9-1) and an air supply pipe (9-2), and the air supply mechanism (9) comprises a second air pump (9-1) and an air supply pipe (9-2). The second air pump (9-1) is arranged outside the box body (1), the second air pump (9-1) is communicated with one end of the air supply pipe (9-2), and the other end of the air supply pipe (9-2) is connected by the box body (1) The second through hole provided on the outer wall penetrates into the box body (1), the air supply pipe (9-2) located in the box body (1) is provided with a plurality of aeration holes, and the second air pump ( 9-1) Electrically connect with the power source through the fourth control switch. 6. The kitchen waste composting device according to claim 1, wherein the top of the box body (1) is provided with a kitchen waste feeding hopper (12) and a bran feeding hopper (12) mixed with lime. 12-1), the bottom discharge ends of the kitchen waste feeding hopper (12) and the lime-mixed bran feeding hopper (12-1) are connected with the upper opening of the pre-grinding bucket (2), and the kitchen waste feeding The tops of the hopper (12) and the lime-mixed bran material feeding hopper (12-1) are provided with sealing covers. 7 . The kitchen waste composting device according to claim 1 , wherein a compost outlet ( 13 ) is provided at the bottom of the box body ( 1 ), and a push-pull baffle is provided on the compost outlet ( 13 ). 8 . . 8 . The kitchen waste composting device according to claim 1 , wherein an observation window is provided on the outer wall of the box body ( 1 ). 9 . 9 . The kitchen waste composting device according to claim 1 , wherein the peripheral wall of the pre-crushing bucket (2) is provided with a second crushing blade, and the blade of the second crushing blade is outward, and the second crushing blade is outward. 10 . The back of the crushing blade is arranged on the pre-crushing barrel (2). 10. The kitchen waste composting device according to claim 1, wherein the box (1) is composed of an inner casing and an outer casing, and the inner casing is arranged inside the outer casing, and the inner casing is The shell and the outer shell are provided with a cavity, and the cavity is filled with thermal insulation material.

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