CN218491637U

CN218491637U - Kitchen garbage aerobic fermentation device

Info

Publication number: CN218491637U
Application number: CN202223020709.7U
Authority: CN
Inventors: 云曙先; 王金岑; 吕德升; 喻娴静
Original assignee: Nanjing Yunsidun Intelligent Technology Co ltd
Current assignee: Nanjing Yunsidun Intelligent Technology Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-02-17
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a kitchen waste aerobic fermentation device, which belongs to the technical field of waste treatment and comprises a fermentation box body, wherein a heat preservation layer is arranged outside the box body, a fermentation cavity is arranged in the box body, a hollow rotating shaft is arranged in the fermentation cavity, air outlet holes are uniformly distributed on the circumferential side wall of the hollow rotating shaft, a spiral stirring blade is arranged on the hollow rotating shaft, one end of the hollow rotating shaft extends out of the box body and is connected with a driving motor, the other end of the hollow rotating shaft extends out of the box body and is connected with a rotating joint, the other end of the rotating joint is connected with an aeration pipe, and the aeration pipe is sequentially connected with a heater and an aeration fan; the top of the fermentation box body is provided with a feed inlet, an exhaust port and a temperature measuring port, and the bottom of the fermentation box body is provided with a discharge port. The utility model discloses a hot-air is by electric heater direct heating, and heat exchange efficiency is high, and hot-air presses blowout formation aeration from a plurality of ventholes of hollow rotating shaft area, and the aeration is effectual, and oxygen in the aeration can fully contact with kitchen garbage, improves kitchen garbage's fermentation efficiency and fermentation effect.

Description

Kitchen garbage aerobic fermentation device

Technical Field

The utility model relates to a refuse treatment technical field, concretely relates to kitchen garbage aerobic fermentation device.

Background

Kitchen waste (kitchen waste), also called wet waste, which mainly comprises: leftovers, vegetable stems and leaves, meat entrails, fruit shells and melon peels and the like. The method for recycling and harmlessly treating the kitchen waste by the aerobic fermentation technology is one of the main methods for treating the kitchen waste at present. Such as:

chinese patent CN217528661U discloses a high-efficiency aerobic fermentation device for kitchen waste, which comprises a fermentation box body, wherein a heat conduction interlayer is arranged outside the fermentation box body, and heat conduction oil flows through the heat conduction interlayer; the inner wall of the fermentation box body is provided with aeration holes, the inside of the heat conduction interlayer is provided with an aeration pipeline, the outer side of the fermentation box body is provided with an aeration fan, the aeration fan is connected with the aeration pipeline, and the aeration pipeline is communicated with the aeration holes. This patent is because the aeration pipe is in the intermediate layer that keeps warm, and outside air can be heated when getting into, guarantees the air admission back, and the inside temperature of box can not descend at the excessive speed, and the oxygen that contains in the outside air can become loose kitchen garbage fully contact through two ribbon stirring simultaneously to effectual improvement fermentation efficiency.

Above-mentioned patent is through heat conduction intermediate layer indirect heating box and aeration air, and heat exchange efficiency is low, and the aeration pipe is direct to contact with the conduction oil, in case the aeration pipeline appears leaking, the conduction oil can get into the aeration pipe and get into the fermenting case along with hot-blast, with greatly reduced fermentation effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a kitchen garbage aerobic fermentation device.

The utility model adopts the technical proposal that:

an aerobic fermentation device for kitchen waste comprises a rectangular fermentation box body, wherein a heat insulation layer is arranged outside the fermentation box body, a fermentation cavity with a semicircular bottom is arranged in the fermentation box body, a hollow rotating shaft is arranged in the fermentation cavity, the center of the hollow rotating shaft is overlapped with the circle center of the semicircular fermentation cavity, air outlet holes communicated with the fermentation cavity are uniformly distributed in the circumferential side wall of the hollow rotating shaft, a spiral stirring blade is arranged on the hollow rotating shaft, one end of the hollow rotating shaft extends out of the left side wall of the box body and is connected with a driving motor, the other end of the hollow rotating shaft extends out of the right side wall of the box body and is rotatably connected with a rotary joint, the other end of the rotary joint is fixedly connected with an aeration pipe, and the aeration pipe is sequentially connected with a heater and an aeration fan; the top of the fermentation box body is provided with a feed inlet, an exhaust port and a temperature measuring port, the bottom of the fermentation box body is provided with a discharge port, the feed inlet and the discharge port are respectively positioned at the left side and the right side of the box body, and a temperature measurer for measuring the temperature of the fermentation cavity is arranged in the temperature measuring port.

Furthermore, the helical stirring blade is provided with notch teeth. Under the rotation effect of hollow rotating shaft, the contact of breach tooth and fermentation intracavity lateral wall forms the cutting force, can cut into the tiny particle with the kitchen garbage of macroparticle to further improve fermentation effect.

Further, the feed port is located on a side adjacent to the rotary joint. The hot air with higher oxygen content coming from the aeration fan is firstly contacted with the kitchen waste with high organic matter content entering the fermentation cavity, so that the fermentation effect is improved.

Further, the heater is an electric heater, and the aeration fan is a Roots fan. The electric heater is convenient to control, the air pressure of the Roots blower is higher, and the aeration effect is favorably improved.

Furthermore, the gas outlet of the Roots blower is provided with an electric gas quantity regulating valve. The aeration air quantity can be adjusted according to the treatment capacity of the kitchen waste, so that the fermentation effect is ensured, and the energy consumption is reduced.

Further, the temperature detector is connected with the electric heater in an interlocking control mode. The opening and closing of the electric heater are automatically adjusted according to the temperature in the fermentation cavity measured by the temperature measurer, so that the fermentation effect can be ensured, and the energy consumption can be reduced.

Furthermore, an air blocking baffle is arranged at one end, close to the driving motor, in the hollow rotating shaft. The air blocking baffle is used for sealing the tail end of the air inlet cavity of the hollow rotating shaft, so that the aeration effect is ensured.

The utility model has the advantages that:

1. through setting up hollow rotating shaft, hollow rotating shaft is positive reverse rotation in turn under driving motor's drive to make the epaxial spiral stirring vane of hollow rotating carry out abundant stirring to the kitchen garbage in the fermentation chamber, simultaneously, the hot-air in going into hollow rotating shaft through the aeration fan drum, get into the fermentation chamber through the venthole and form the aeration, under spiral stirring vane's effect, oxygen and kitchen garbage fully contact in the aeration improve kitchen garbage's fermentation efficiency and fermentation effect.

2. The fermentation time is controlled by controlling the forward and reverse rotation time of the hollow rotating shaft, after fermentation is completed, the hollow rotating shaft is rotated from the feeding hole to the discharging hole, and the fermented kitchen waste is output from the discharging hole.

3. The heat loss in the fermentation box can be reduced by arranging the heat-insulating layer, so that the energy consumption is saved; the temperature detector can measure the fermentation temperature, so that the fermentation effect can be better controlled, and the energy consumption can be saved by interlocking with the electric heater.

4. The hot air is directly heated by the electric heater, the heat exchange efficiency is high, and the hot air is sprayed out under pressure from a plurality of air outlet holes of the hollow rotating shaft to form aeration, so that the aeration effect is good; the heat preservation function of the fermentation box can be realized by arranging the conventional heat preservation layer outside the fermentation box body, and the complexity of the structural design of the fermentation box is simplified.

Drawings

FIG. 1 is a schematic structural diagram of the aerobic fermentation device for kitchen waste of the utility model.

Fig. 2 is a left side view of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 and fig. 2, the present embodiment provides an aerobic fermentation device for kitchen waste, which includes a rectangular fermentation box 10, a heat insulation layer 12 is disposed outside the fermentation box, a fermentation chamber 101 with a semicircular bottom is disposed in the fermentation box, a hollow rotating shaft 20 is disposed in the fermentation chamber 101, the center of the hollow rotating shaft 20 coincides with the center of the semicircular fermentation chamber 101, air outlet holes 21 communicated with the fermentation chamber 101 are uniformly distributed on the circumferential side wall of the hollow rotating shaft 20, a spiral stirring blade 30 is disposed on the hollow rotating shaft 20, one end of the hollow rotating shaft 20 extends out of the left side wall of the fermentation box to be connected to a driving motor 40, the other end extends out of the right side wall of the fermentation box to be rotatably connected to a rotary joint 50, the other end of the rotary joint is fixedly connected to an aeration pipe, and the aeration pipe is sequentially connected to a heater 60 and an aeration fan 70; the top of the fermentation box 10 is provided with a feed inlet 102, an exhaust port 103 and a temperature measuring port 104, the bottom of the fermentation box is provided with a discharge outlet 105, the feed inlet 102 is positioned on the right side of the fermentation box and is close to the rotary joint, the discharge outlet 105 and the exhaust port 103 are positioned on the left side of the fermentation box, the temperature measuring port 104 is close to the exhaust port 103, and a temperature measurer 80 for measuring the temperature of the fermentation cavity is arranged in the temperature measuring port 104. The thermo detector 80 and the electric heater 60 are controlled in an interlocking manner, and the thermo detector 80 and the interlocking control manner with the electric heater 60 are all in the prior art, and the structure and principle thereof are not described herein.

During the concrete implementation, the box lateral wall 11 of fermentation box 10 can select corrosion-resistant corrosion resistant stainless steel plate concatenation to make, and its upper portion sets up to the rectangle, and the lower part sets up to semi-circular, and semi-circular cavity is used for disposing hollow rotating shaft 20, and make the center of hollow rotating shaft and the center coincidence of semi-circular cavity, thereby can contact the inside wall of fermentation box when making spiral stirring leaf 30 rotate, carry out intensive mixing to kitchen garbage, set up the breach tooth on the spiral stirring leaf 30, the breach tooth can carry out effectual cutting to rubbish. The upper rectangular cavity leaves a certain fermentation space for fermentation, and the fermentation effect is improved. The heat-insulating layer 12 can be made of polyurethane heat-insulating material, and is coated and fixed on the outer side wall of the stainless steel, and a layer of stainless steel guard plate can be arranged on the outer side of the polyurethane heat-insulating material. Fermentation box 10 supports through the backup pad 13 at both ends, and backup pad 13 and the box left and right sides wall are through the connecting piece fixed connection who passes heat preservation 12, and the connecting piece is prior art, and the figure is not shown, and it can be bolt, round steel etc. and the connecting piece is connected with box lateral wall and 13 accessible welding modes of backup pad. The upper center of the supporting plate 13 is provided with a U-shaped groove for mounting the hollow rotating shaft 20, and the hollow rotating shaft 20 is rotatably mounted on the supporting plate 13 through a bearing. The hollow rotating shaft 20 is provided with a choke baffle 22 at one end close to the driving motor, and the choke baffle 22 closes the tail end of the air inlet cavity of the hollow rotating shaft. Preferably, the air outlet 21 is a circular hole with a diameter of 2-5 mm. Too small or too large aperture affects the aeration effect, too small aeration quantity is insufficient, too large flow velocity is insufficient, and the aeration effect is not good. The hollow rotating shaft 20 is connected with the rotating part of the rotary joint 50 through a joint outlet flange, the fixed part of the rotary joint 50 is connected with the aeration pipe A through a joint inlet flange, the other end of the aeration pipe A is connected with the outlet flange of the electric heater 60, the inlet of the electric heater 60 is connected with the air outlet of the Roots blower 70 through the aeration pipe B, the air inlet of the Roots blower 70 is communicated with the atmosphere through a filter (not shown in the figure), and the filter is used for filtering dust and the like in the air. An electric air quantity regulating valve 71 is arranged at an air outlet of the Roots blower 70.

The utility model discloses a theory of operation: firstly, kitchen waste enters a fermentation chamber 101 through a feeding hole 102, hot air heated by a heater 60 is blown into a hollow rotating shaft 20 by an aeration fan 70, the hollow rotating shaft 20 is driven by a driving motor 40 to rotate forward and reversely alternately, the waste is pushed to a discharging side by a feeding side and then is pushed to the feeding side by the discharging side, so that the waste is fully stirred, in the process, notch teeth on a spiral stirring blade and the inner side wall of a fermentation box body jointly extrude and cut large kitchen waste, and the kitchen waste becomes smaller and is easier to ferment; meanwhile, hot air is ejected out of the air outlet 21 of the hollow rotating shaft 20 under pressure to form aeration, and oxygen in the aeration is fully contacted with the uniformly stirred small-particle kitchen waste, so that the kitchen waste is rapidly fermented;

when the temperature in the fermentation cavity measured by the temperature detector 80 is higher than the limit value, the electric heater 60 is automatically controlled to stop heating in an interlocking manner, fresh air from the aeration fan 70 directly enters the fermentation box through the electric heater, and when the temperature measured by the temperature detector 80 is lower than the limit value, the electric heater is started to heat the fresh air;

the fermentation time is controlled by controlling the forward and reverse rotation time of the hollow rotating shaft 20, and after the fermentation time meets the requirement, the discharge port 105 is opened to enable the hollow rotating shaft 20 to rotate in a single direction, so that the fermented garbage in the fermentation box is output from the discharge port 105.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims

1. An aerobic fermentation device for kitchen waste comprises a rectangular fermentation box body and is characterized in that a heat-insulating layer is arranged outside the fermentation box body, a fermentation cavity with a semicircular bottom is arranged in the fermentation box body, a hollow rotating shaft is arranged in the fermentation cavity, the center of the hollow rotating shaft is overlapped with the circle center of the semicircular fermentation cavity, air outlet holes communicated with the fermentation cavity are uniformly distributed in the circumferential side wall of the hollow rotating shaft, a spiral stirring blade is arranged on the hollow rotating shaft, one end of the hollow rotating shaft extends out of the left side wall of the box body and is connected with a driving motor, the driving motor drives the hollow rotating shaft to rotate in the forward and reverse directions, the other end of the hollow rotating shaft extends out of the right side wall of the box body and is connected with a rotary joint in a rotating manner, the other end of the rotary joint is fixedly connected with an aeration pipe, and the aeration pipe is sequentially connected with a heater and an aeration fan; the top of the fermentation box body is provided with a feed inlet, an exhaust port and a temperature measuring port, the bottom of the fermentation box body is provided with a discharge port, the feed inlet and the discharge port are respectively positioned at the left side and the right side of the box body, and a temperature measurer for measuring the temperature of the fermentation cavity is arranged in the temperature measuring port.

2. The aerobic fermentation device for kitchen waste according to claim 1, wherein the helical stirring blade is provided with notched teeth.

3. The aerobic fermentation device for kitchen waste, according to claim 2, characterized in that the feeding port is located at one side adjacent to the rotary joint.

4. The aerobic fermentation device for kitchen waste according to claim 1, wherein the heater is an electric heater, and the aeration fan is a Roots fan.

5. The aerobic fermentation device for kitchen waste as claimed in claim 1, wherein the gas outlet of the Roots blower is provided with an electric gas flow regulating valve.

6. The aerobic fermentation device for kitchen waste according to claim 5, wherein the temperature detector is connected with the electric heater in an interlocking control manner.

7. The aerobic fermentation device for kitchen waste, as claimed in claim 1, wherein a choke baffle is provided at one end of the hollow rotating shaft, which is close to the driving motor.