CN220149339U

CN220149339U - Dirty preprocessing device of plant's excrement

Info

Publication number: CN220149339U
Application number: CN202321401975.6U
Authority: CN
Inventors: 薛澄; 王卫平; 邵立康; 张红刚
Original assignee: Hebei Mindefu Biotechnology Co ltd; Heibei Agricultural University
Current assignee: Hebei Mindefu Biotechnology Co ltd; Heibei Agricultural University
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-12-08
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a livestock farm manure pretreatment device which comprises a main tank body, a tank body support, a stirring assembly and a ventilation assembly, wherein the main tank body is vertically erected on the tank body support, a feed inlet for inputting manure materials, an exhaust port for exhausting gas and an auxiliary material filling pipe for introducing a microbial inoculum are arranged at the top of the main tank body, and a discharge valve is closed at the bottom of the main tank body; the stirring assembly is vertically arranged in the main tank body and can stir the excrement and dirt materials in the cavity; the ventilation assembly is capable of delivering fresh air into the body cavity of the main tank. According to the livestock farm manure pretreatment device, the manure is subjected to microbial aerobic proliferation, so that the microbial decomposition condition is quickly achieved, the later-stage aerobic fermentation is facilitated, the manure decomposition period is greatly shortened, and the field requirements are reduced.

Description

Dirty preprocessing device of plant's excrement

Technical Field

The utility model relates to the technical field of manure decomposition, in particular to a manure pretreatment device for a farm.

Background

With the development of modern breeding industry, the annual output of livestock and poultry feces of the whole country is billions tons at present, and if livestock and poultry feces cannot be treated in time, the livestock and poultry feces can be extremely harmful to agricultural environment. The livestock and poultry manure contains abundant major elements and trace elements required by plant growth, but the direct application of the livestock and poultry manure can cause the problems of heavy metal pollution of soil, infectious disease insect damage, fermentation seedling burning and the like.

The livestock and poultry manure is treated and utilized, so that the pollution and discharge of the livestock and poultry manure can be reduced, the cleaning of an agricultural industry chain can be promoted, the reutilization of wastes can be realized, and waste materials are changed into valuable materials. In the traditional technology, livestock and poultry manure is often decomposed in a composting way, namely organic wastes such as livestock and poultry manure, straw and the like are mixed and then are concentrated and piled up, and the mixed materials are converted into relatively stable substances rich in humus through biodegradation under natural conditions. The water content of the raw material mixture is preferably 45% -65%, the raw material mixture is piled into a strip pile, and a layer of covering materials such as straw, rotten clinker or plastic film are paved on the surface of the raw material mixture. However, composting is carried out in natural environment, the period is long, and the fertilizer can be thoroughly decomposed in no less than 90 days. The period is long, the composting occupation area is large, and the large treatment area is not needed in the farm, so that the livestock and poultry manure treatment and utilization are limited.

Therefore, it is necessary to develop a pretreatment device for the manure in a farm, which can shorten the manure decomposition period and improve the manure treatment efficiency.

Disclosure of Invention

The utility model aims to provide a livestock farm manure pretreatment device, which can quickly reach microorganism decomposition conditions by carrying out microorganism aerobic proliferation on manure, is convenient for later-stage aerobic fermentation, greatly shortens manure decomposition period and reduces field requirements.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model relates to a livestock farm manure pretreatment device which comprises a main tank body, a tank body support, a stirring assembly and a ventilation assembly, wherein the main tank body is vertically erected on the tank body support, a feed inlet for inputting manure materials, an exhaust port for exhausting gas and an auxiliary material filling pipe for introducing a microbial inoculum are arranged at the top of the main tank body, and the bottom of the main tank body is closed and provided with a discharge valve; the stirring assembly is vertically arranged in the main tank body and can stir the excrement and dirt materials in the cavity; the ventilation assembly is capable of delivering fresh air into the body cavity of the main tank.

Further, the stirring assembly comprises a speed reducing motor and a stirring paddle shaft, a motor bracket is arranged on the top plate of the main tank body, the speed reducing motor is vertically arranged on the motor bracket, and the stirring paddle shaft is connected with an output shaft which vertically protrudes downwards from the speed reducing motor through a coupling; the lower part of the stirring paddle shaft is positioned in the cavity of the main tank body and provided with a plurality of groups of paddles with different heights.

Further, the stirring assembly further comprises a supporting shaft sleeve, the supporting shaft sleeve is used for rotatably supporting the lower shaft section of the stirring paddle shaft, a plurality of supporting rods are uniformly distributed on the circumference of the outer wall of the supporting shaft sleeve, and the other ends of the supporting rods are connected to the inner wall of the main tank body.

Further, the bottom section of the stirring paddle shaft is coaxially provided with a lower spiral blade, the lower spiral blade is positioned below the supporting shaft sleeve, and the lower spiral blade can push the fecal sewage material to be discharged from the discharge valve.

Further, the ventilation assembly comprises a fan and a ventilation annular pipe, a fan support is arranged on one side of the tank support, the fan is mounted on the fan support, and an air outlet of the fan is communicated to the ventilation annular pipe through a pipeline; the ventilation ring canal is coaxially arranged on the inner wall of the cone cylinder at the bottom of the main tank body through the supporting plate, and a plurality of air outlet holes are uniformly formed in the inner side of the ventilation ring canal facing the middle.

Further, the ventilation assembly further comprises a stainless steel seamless pipe, the stainless steel seamless pipe is tightly attached to the inner wall of the main tank body and is fixed by adopting a pipe clamp, the bottom end of the stainless steel seamless pipe is communicated with the ventilation annular pipe, and the ventilation annular pipe is also made of stainless steel pipe materials; the top end of the stainless steel seamless pipe extends out of the side wall of the main tank body and is communicated with the air outlet of the fan through a hose.

Further, an automatic closing mechanism is arranged on the feeding port and can automatically close the feeding port after feeding.

Further, the automatic closing mechanism comprises a rotating shaft, a movable baffle and a torsion spring, an inclined guide plate is arranged on one side in the feeding hole, the rotating shaft horizontally penetrates through the lower portion of the inclined guide plate, a sleeve sleeved with the rotating shaft is arranged at the large end of the movable baffle, a spiral barrel part of the torsion spring is sleeved on the rotating shaft, and two ends of the spiral barrel part are abutted to the bottom surfaces of the movable baffle and the inclined guide plate; the movable baffle plate is under the action of the torsion spring reset force, the small end of the movable baffle plate overturns upwards and is limited and blocked by the stop block on the inner wall of the feed inlet, and the movable baffle plate seals the feed inlet.

Further, the microbial inoculum stirring tank is arranged beside the main tank body, and the discharging pipe joint is communicated to the auxiliary material filling pipe through a pipeline.

Further, the device also comprises a spiral conveying lifter, wherein the feeding end of the spiral conveying lifter is positioned right below the discharging valve, and the discharging end of the spiral conveying lifter lifts up the material and conveys the material to the subsequent processing equipment.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the livestock farm manure pretreatment device, the stirring assembly and the ventilation assembly are arranged in the main tank body, so that manure materials and microbial agents can be fully mixed, inoculated uniformly, and air is filled, thereby facilitating the fermentation and rapid proliferation of aerobic bacteria, rapidly achieving the microorganism condition of manure decomposition, facilitating the later-stage aerobic fermentation, greatly shortening manure decomposition period and reducing field requirements.

In addition, the two symmetrically arranged channel steels are used as the motor brackets to be arranged on the top plate of the main tank body, so that the speed reducing motor is convenient to install, and the top plate can be supported, and the strength is improved; the lower shaft section of the stirring paddle shaft is rotatably supported through the supporting shaft sleeve, so that the stability of the stirring paddle shaft can be improved, and the bending condition is avoided; through the screw blade under the coaxial-mounting of bottom section at stirring paddle axle, can upwards screw conveying turn bottom excrement dirt material when corotation, when reversing, can extrude the discharge material downwards. The ventilation ring pipe is coaxially arranged on the inner wall of the conical cylinder at the bottom of the main tank body, and air can be uniformly blown into the inner air outlet holes towards the materials, so that oxygen required by microorganism proliferation is ensured; by adopting the stainless steel seamless pipe to be tightly attached to the inner wall of the main tank body, the influence on material turning retardation can be reduced, corrosion is not easy to occur, and stable operation of equipment is ensured. The automatic closing mechanism is adopted to automatically close the feeding port after the feeding is finished, so that odor generated in the pretreatment process can be prevented from escaping outwards through the feeding port, and the odor can be prevented from escaping through the exhaust port with the activated carbon adsorption function, so that the influence on the external environment can be reduced; through adopting torsional spring reset movable baffle, can the feeding after, the torsional spring overcomes the movable baffle dead weight and upwards overturns shutoff feed inlet with it, simple structure is effective. The dry powder microbial inoculum of the saccharomycetes is activated in a microbial inoculum stirring tank, and after being stirred by taking brown sugar water as a nutrition component, the microbial inoculum is discharged into a main tank body for further mixed proliferation. Through the setting of screw conveyer lifting machine, can promote and carry the material to the material mixing machine of rear end, reduce artifical intensity of labour that carries, be convenient for integrate into automated production line.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic diagram of a front view in cross section of a plant manure pretreatment device of the present utility model;

FIG. 2 is a schematic view of a cross-sectional front view of a main tank portion of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of the feed inlet of the present utility model.

Reference numerals illustrate: 1. a main tank body; 101. a feed inlet; 102. a discharge valve; 103. an exhaust port; 104. an auxiliary material filling pipe; 105. a support shaft sleeve; 106. an inclined guide plate; 107. a stop block; 2. a tank bracket; 3. a speed reducing motor; 4. a stirring paddle shaft; 401. a lower helical blade; 5. a blower; 6. a vent collar; 7. a rain shield; 8. a rotating shaft; 9. a movable baffle; 10. a torsion spring; 11. a microbial inoculum stirring tank; 12. a spiral elevator.

Detailed Description

The utility model has the core of providing a livestock farm manure pretreatment device, which can quickly reach the microorganism decomposition condition by carrying out microorganism aerobic proliferation on manure, is convenient for the later aerobic fermentation, greatly shortens the manure decomposition period and reduces the field requirement.

The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to the drawings, FIG. 1 is a schematic diagram showing a front view in cross section of a plant manure pretreatment device of the present utility model; FIG. 2 is a schematic view of a cross-sectional front view of a main tank portion of the present utility model; FIG. 3 is a schematic view of the cross-sectional structure of the feed inlet of the present utility model.

In one embodiment, as shown in fig. 1 and 2, a device for pretreating the fecal sewage of a farm comprises a main tank 1, a tank bracket 2, a stirring assembly and a ventilation assembly. The main tank body 1 is vertically erected on the tank body support 2, and a feed inlet 101 for inputting fecal sewage materials, an exhaust outlet 103 for exhausting gas and an auxiliary material filling pipe 104 for introducing bacteria are arranged at the top of the main tank body 1. The exhaust port 103 is provided with a rain cover 7. The bottom of the main tank body 1 is provided with a funnel-shaped closing-in and is provided with a discharge valve 102, and the discharge valve 102 can be a hand plate valve or a starting plate valve. The stirring assembly is vertically arranged in the main tank body 1 and can stir the excrement and dirt materials in the cavity of the main tank body 1. The ventilation assembly is capable of delivering fresh air into the cavity of the main tank 1.

Through setting up stirring subassembly and ventilation subassembly in main jar body 1, can carry out abundant mixing to excrement dirty material and fungus agent, it is even to inoculate, fills the air, and the quick proliferation of aerobic bacteria fermentation of being convenient for reaches the dirty thoroughly decomposed microorganism condition of excrement fast, the aerobic fermentation of later stage of being convenient for has shortened excrement dirty thoroughly decomposed cycle by a wide margin, has reduced the place demand.

In a specific embodiment of the present utility model, as shown in fig. 1 and 2, the stirring assembly includes a gear motor 3 and a stirring paddle shaft 4, a motor support is disposed on a top plate of the main tank 1, and the motor support is formed by directly welding two channel steel with vertically placed cross sections on the top plate of the main tank 1. The gear motor 3 is vertically arranged on the motor support, a bearing seat of a rotary support is arranged on the top plate of the main tank body 1 at the top section of the stirring paddle shaft 4, and the stirring paddle shaft 4 is connected with an output shaft of the gear motor 3 which vertically protrudes downwards through a coupling. Stirring paddle shaft 4 the stirring paddle shaft 4 lower part is located main tank body 1 cavity and is provided with the paddle of multiunit different height. The gear motor 3 is electrically connected to the electric cabinet of the apparatus.

Specifically, as shown in fig. 1 and 2, the stirring assembly further comprises a support shaft sleeve 105, the support shaft sleeve 105 rotatably supports the lower shaft section of the stirring paddle shaft 4, and the support shaft sleeve 105 comprises a polytetrafluoroethylene inner bushing and a stainless steel outer sleeve. The circumference of the outer wall of the supporting shaft sleeve 105 is uniformly and fixedly connected with a plurality of supporting rods, and the other ends of the supporting rods are connected to the inner wall of the main tank body 1.

Specifically, as shown in fig. 1 and 2, the bottom section of the stirring paddle shaft 4 is coaxially provided with a lower spiral blade 401, the lower spiral blade 401 is located below the supporting shaft sleeve 105, and the lower spiral blade 401 can push the fecal sewage material to be discharged from the discharge valve 102.

The two symmetrically arranged channel steels are used as the motor brackets to be arranged on the top plate of the main tank body 1, so that the speed reduction motor 3 is convenient to install, and the top plate can be supported, so that the strength is improved; the lower shaft section of the stirring paddle shaft 4 is rotatably supported through the supporting shaft sleeve 105, so that the stability of the stirring paddle shaft 4 can be improved, and bending is avoided; through the coaxial installation of screw blade 401 down at the bottom section of stirring paddle axle 4, can upwards screw conveying turn bottom excrement dirt material during the corotation, during the reversal, can extrude the discharge material downwards.

In a specific embodiment of the present utility model, as shown in fig. 1 and 2, the ventilation assembly includes a fan 5 and a ventilation collar 6, a fan bracket is disposed at one side of the tank bracket 2, the fan 5 is mounted on the fan bracket, and an air outlet of the fan 5 is connected to the ventilation collar 6 through a pipe. The ventilation ring pipe 6 is coaxially arranged on the inner wall of the conical cylinder at the bottom of the main tank body 1 through a supporting plate, and a plurality of air outlet holes are uniformly formed in the inner side of the ventilation ring pipe 6 facing the middle.

Specifically, as shown in fig. 1 and 2, the ventilation assembly further comprises a stainless steel seamless pipe, the stainless steel seamless pipe is tightly attached to the inner wall of the main tank body 1 and is fixed by adopting a pipe clamp, the bottom end of the stainless steel seamless pipe is directly welded and communicated to the ventilation annular pipe 6, and the ventilation annular pipe 6 is also made of stainless steel pipe materials. The top end of the stainless steel seamless pipe extends out of the side wall of the main tank body 1 and is communicated to an air outlet of the fan 5 through a hose.

The ventilation ring pipe 6 is coaxially arranged on the inner wall of the conical cylinder at the bottom of the main tank body 1, and air can be uniformly blown into the inner air outlet holes towards the materials, so that oxygen required by microorganism proliferation is ensured; by adopting the stainless steel seamless pipe to be tightly attached to the inner wall of the main tank body 1, the influence on material turning retardation can be reduced, corrosion is not easy to occur, and stable operation of equipment is ensured.

In one embodiment of the present utility model, as shown in fig. 1 to 3, an automatic closing mechanism is provided on the inlet 101, and the automatic closing mechanism can automatically close the inlet 101 where the feeding is completed.

Specifically, as shown in fig. 3, the automatic closing mechanism includes a rotation shaft 8, a shutter 9, and a torsion spring 10. One side is provided with oblique stock guide 106 in the feed inlet 101, and pivot 8 level runs through in oblique stock guide 106 below, and the flapper 9 big end is provided with the sleeve that cup joints pivot 8, and the spiral section of thick bamboo portion of torsional spring 10 cup joints on pivot 8 and both ends butt are on flapper 9 and oblique stock guide 106 bottom surface. The movable baffle 9 is turned upwards under the action of the reset force of the torsion spring 10, the small end of the movable baffle 9 is limited and blocked by the stop block 107 on the inner wall of the feed inlet 101, and the movable baffle 9 seals the feed inlet.

Specifically, the outer edge of the flap 9 is compounded with a rubber edge that can seal the gap when the flap 9 seals the feed port.

By adopting the automatic closing mechanism to automatically close the feeding port 101 after the feeding is finished, odor generated in the pretreatment process can be prevented from escaping outwards through the feeding port 101, so that the odor can be prevented from escaping through the exhaust port 103 with the activated carbon adsorption function, and the influence on the external environment can be reduced; by adopting the torsion spring 10 to reset the movable baffle plate 9, after feeding is finished, the torsion spring 10 overcomes the dead weight of the movable baffle plate 9 to upwards overturn the movable baffle plate to block the feeding hole, and the structure is simple and effective.

In a specific embodiment of the utility model, as shown in fig. 1, the device for pretreating the excrement of the farm further comprises a microbial inoculum stirring tank 11, wherein the microbial inoculum stirring tank 11 is arranged beside the main tank body 1, and a discharging pipe joint is communicated with an auxiliary material filling pipe 104 through a pipeline and is conveyed through a pump group. The volume of the microbial inoculum agitator tank 11 was 200 liters, and the volume of the main tank 1 was 2 cubic meters.

The dry powder microbial inoculum of saccharomycetes is activated in a microbial inoculum stirring tank 11, and after being stirred by taking brown sugar water as a nutrition component, the microbial inoculum is discharged into a main tank body 1 for further mixed proliferation.

In one embodiment of the present utility model, as shown in fig. 1, the apparatus further comprises a screw conveyor hoist 12, wherein the feed end of the screw conveyor hoist 12 is located directly below the discharge valve 102, and the discharge end of the screw conveyor hoist 12 lifts the material upward and conveys the material to a subsequent processing facility.

Through the arrangement of the spiral conveying lifting machine 12, the material mixer from the material to the rear end can be lifted and conveyed, the labor intensity of manual conveying is reduced, and the material mixer is convenient to integrate into an automatic production line.

The working process of the device for preprocessing the excrement of the farm comprises the following steps: the excrement collected by the excrement scraping plate is thrown into the main tank body 1 from the feed inlet 101, and is stirred while being thrown, and after the feeding is finished, the torsion spring 10 overcomes the dead weight of the movable baffle plate 9 to upwards overturn the movable baffle plate to block the feed inlet. The pump set is started to convey, the activated high-density liquid microbial inoculum in the microbial inoculum stirring tank 11 is put into the main tank body 1 through the auxiliary material filling pipe 104 and stirred with the manure and dirt materials for 1.5 hours, in the process, the fan 5 is started, the fan 5 blows to the ventilation loop pipe 6, and the ventilation loop pipe 6 blows fresh air to the stirred materials. The microorganisms get nutrients and oxygen to proliferate rapidly, and the exhaust gas escapes after the deodorization treatment through the exhaust port 103 at the top. After pretreatment is finished, the discharge valve 102 is opened, the electric control box is controlled, the speed reducing motor 3 drives the stirring paddle shaft 4 to rotate reversely, and the lower spiral blade 401 extrudes downwards to rapidly discharge materials. The screw conveyor 12 is supported below to convey the material between the devices.

According to the livestock farm manure pretreatment device, the stirring assembly and the ventilation assembly are arranged in the main tank body 1, so that manure materials and microbial agents can be fully mixed, inoculated uniformly, and filled with air, thereby facilitating the rapid proliferation of aerobic bacteria fermentation, achieving the microorganism condition of manure decomposition rapidly, facilitating the later-stage aerobic fermentation, greatly shortening manure decomposition period and reducing field requirements. In addition, the two symmetrically arranged channel steels are used as the motor brackets to be arranged on the top plate of the main tank body 1, so that the speed reduction motor 3 is convenient to install, and the strength of the top plate can be improved by supporting the top plate; the lower shaft section of the stirring paddle shaft 4 is rotatably supported through the supporting shaft sleeve 105, so that the stability of the stirring paddle shaft 4 can be improved, and bending is avoided; through the coaxial installation of screw blade 401 down at the bottom section of stirring paddle axle 4, can upwards screw conveying turn bottom excrement dirt material during the corotation, during the reversal, can extrude the discharge material downwards. The ventilation ring pipe 6 is coaxially arranged on the inner wall of the conical cylinder at the bottom of the main tank body 1, and air can be uniformly blown into the inner air outlet holes towards the materials, so that oxygen required by microorganism proliferation is ensured; by adopting the stainless steel seamless pipe to be tightly attached to the inner wall of the main tank body 1, the influence on material turning retardation can be reduced, corrosion is not easy to occur, and stable operation of equipment is ensured. By adopting the automatic closing mechanism to automatically close the feeding port 101 after the feeding is finished, odor generated in the pretreatment process can be prevented from escaping outwards through the feeding port 101, so that the odor can be prevented from escaping through the exhaust port 103 with the activated carbon adsorption function, and the influence on the external environment can be reduced; by adopting the torsion spring 10 to reset the movable baffle plate 9, after feeding is finished, the torsion spring 10 overcomes the dead weight of the movable baffle plate 9 to upwards overturn the movable baffle plate to block the feeding hole, and the structure is simple and effective. The dry powder microbial inoculum of saccharomycetes is activated in a microbial inoculum stirring tank 11, and after being stirred by taking brown sugar water as a nutrition component, the microbial inoculum is discharged into a main tank body 1 for further mixed proliferation. Through the arrangement of the spiral conveying lifting machine 12, the material mixer from the material to the rear end can be lifted and conveyed, the labor intensity of manual conveying is reduced, and the material mixer is convenient to integrate into an automatic production line.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. Dirty preprocessing device of plant's excrement, its characterized in that: the novel waste liquid treatment tank comprises a main tank body (1), a tank body support (2), a stirring assembly and a ventilation assembly, wherein the main tank body (1) is vertically erected on the tank body support (2), a feeding port (101) for inputting waste materials, an exhaust port (103) for exhausting gas and an auxiliary material filling pipe (104) for introducing bacteria are arranged at the top of the main tank body (1), and a discharge valve (102) is closed at the bottom of the main tank body (1); the stirring assembly is vertically arranged in the main tank body (1) and can stir the excrement and dirt in the cavity; the ventilation assembly can input fresh air into the cavity of the main tank body (1);

the stirring assembly comprises a speed reducing motor (3) and a stirring paddle shaft (4), a motor bracket is arranged on the top plate of the main tank body (1), the speed reducing motor (3) is vertically arranged on the motor bracket, and the stirring paddle shaft (4) is connected with an output shaft of the speed reducing motor (3) which vertically protrudes downwards through a coupling; the lower part of the stirring paddle shaft (4) is positioned in the cavity of the main tank body (1) and provided with a plurality of groups of paddles with different heights;

the stirring assembly further comprises a supporting shaft sleeve (105), the supporting shaft sleeve (105) rotatably supports the lower shaft section of the stirring paddle shaft (4), a plurality of supporting rods are uniformly and fixedly connected to the circumference of the outer wall of the supporting shaft sleeve (105), and the other ends of the supporting rods are connected to the inner wall of the main tank body (1);

the ventilation assembly comprises a fan (5) and a ventilation annular pipe (6), a fan support is arranged on one side of the tank support (2), the fan (5) is installed on the fan support, and an air outlet of the fan (5) is communicated to the ventilation annular pipe (6) through a pipeline; the ventilation ring pipe (6) is coaxially arranged on the inner wall of the conical cylinder at the bottom of the main tank body (1) through a supporting plate, and a plurality of air outlet holes are uniformly formed in the inner side of the ventilation ring pipe (6) facing the middle;

the ventilation assembly further comprises a stainless steel seamless pipe, the stainless steel seamless pipe is tightly attached to the inner wall of the main tank body (1) and is fixed through a pipe clamp, the bottom end of the stainless steel seamless pipe is communicated with the ventilation annular pipe (6), and the ventilation annular pipe (6) is made of stainless steel pipe materials; the top end of the stainless steel seamless pipe extends out of the side wall of the main tank body (1) and is communicated with an air outlet of the fan (5) through a hose.

2. The farm manure pretreatment device of claim 1, wherein: the bottom section of the stirring paddle shaft (4) is coaxially provided with a lower spiral blade (401), the lower spiral blade (401) is positioned below the supporting shaft sleeve (105), and the lower spiral blade (401) can push the fecal sewage to be discharged from the discharge valve (102).

3. The farm manure pretreatment device of claim 1, wherein: the automatic closing mechanism is arranged on the feeding port (101) and can automatically close the feeding port (101) after feeding.

4. A plant manure pretreatment device as defined in claim 3, wherein: the automatic closing mechanism comprises a rotating shaft (8), a movable baffle plate (9) and a torsion spring (10), wherein an inclined guide plate (106) is arranged on one side in the feeding hole (101), the rotating shaft (8) horizontally penetrates through the lower part of the inclined guide plate (106), a sleeve sleeved with the rotating shaft (8) is arranged at the large end of the movable baffle plate (9), a spiral barrel part of the torsion spring (10) is sleeved on the rotating shaft (8), and two ends of the spiral barrel part are abutted to the bottom surfaces of the movable baffle plate (9) and the inclined guide plate (106); the movable baffle (9) is turned upwards under the action of the reset force of the torsion spring (10) and is limited and blocked by the stop block (107) on the inner wall of the feed inlet (101), and the movable baffle (9) seals the feed inlet.

5. The farm manure pretreatment device of claim 1, wherein: the microbial inoculum stirring tank (11) is arranged beside the main tank body (1), and the discharging pipe joint is communicated with the auxiliary material filling pipe (104) through a pipeline.

6. The farm manure pretreatment device of claim 1, wherein: the device further comprises a screw conveying lifter (12), wherein the feeding end of the screw conveying lifter (12) is located right below the discharging valve (102), and the discharging end of the screw conveying lifter (12) lifts materials upwards and conveys the materials to subsequent processing equipment.