Mild-low-temperature stable cow dung fermentation cow bed padding device

Abstract

The invention relates to the technical field of preparation of cattle bed padding through cattle manure fermentation, and discloses a mild-low-temperature stable cattle bed padding device through cattle manure fermentation. A drying assembly, a fermentation assembly and a deodorization assembly are sequentially arranged in a bracket from top to bottom; the anti-accumulation stirring assembly arranged in the deodorization assembly stirs the fermented raw materials, meanwhile, the heat supply assembly introduces hot air into the deodorization assembly through the anti-accumulation stirring assembly, and full contact between the hot air and the raw materials is achieved. Aiming at the problem of high moisture content of cow dung after solid-liquid separation, the drying assembly is additionally arranged between the separation link and the fermentation link, hot air uniformly penetrates through cow dung raw materials, and rapid dehydration is realized. The multiple components of the anti-accumulation stirring assembly move cooperatively, so that the raw materials are in a dynamic loose state all the time, a closed-loop process of hot air penetration-raw material turning-odor release is formed in cooperation with dynamic air injection of the sliding connection rod, the raw materials are in the loose state and make full contact with hot air, and the odor can be rapidly brought out through the hot air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cow bedding material prepared by cow dung fermentation, in particular to a sub-low-temperature stable cow dung fermentation cow bedding material device. BACKGROUND

[0002] With the rapid development of intensive farming, the centralized discharge of cow dung affects the sustainable development of the dairy farming industry. Cow dung preparation of cow bedding material is a feasible way to realize the reduction, harmlessness and resource utilization of cow dung, which can not only effectively reduce the discharge of manure, but also turn waste into treasure to provide economic and environmentally friendly bedding for ranches.

[0003] Through field research, it is found that the cow dung regeneration bedding technology in Inner Mongolia mainly adopts natural fermentation method and constant temperature heating fermentation method. After the rotten raw materials are accumulated in the tank body, most of the odor can be eliminated under the condition of continuous rotting. Before discharging, the remaining odor needs to be taken out by hot air, but the accumulation of rotten raw materials in the tank body is easy to cause the hot air to not enter the tank body smoothly, so that the rotten raw materials cannot be taken away by the hot air. The rotten raw materials are accumulated densely, and the hot air cannot fully contact with them, which reduces the efficiency of the hot air in taking away the odor. The efficiency of the simple stirring rod in stirring the rotten raw materials is low, and the stirring effect is poor, so that the rotten raw materials cannot be in a loose state and fully contact with the hot air. Therefore, we provide a sub-low-temperature stable cow dung fermentation cow bedding material device. SUMMARY

[0004] The purpose of the present application is to provide a sub-low-temperature stable cow dung fermentation cow bedding material device to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A sub-low-temperature stable cow dung fermentation cow bedding material device, comprising a support, a heat supply assembly and a feeding assembly, the inside of the support is sequentially provided with a drying assembly, a fermentation assembly and a deodorization assembly from top to bottom, the drying assembly and the fermentation assembly are communicated by a first communication pipe, and the fermentation assembly and the deodorization assembly are communicated by a second communication pipe; The feeding assembly is used for conveying the raw materials after solid-liquid separation into the drying assembly, and the heat supply assembly is used for providing hot air into the drying assembly and the fermentation assembly to realize drying and fermentation of the raw materials; The anti-accumulation stirring assembly built in the deodorization assembly stirs the fermented raw materials under the drive of the first servo motor, at the same time, the heat supply assembly introduces the hot air into the deodorization assembly through the anti-accumulation stirring assembly to realize full contact between the hot air and the raw materials, and deodorization is realized after the hot air takes out the odor in the raw materials; The inside of the deodorization tank is formed into a cavity by a partition plate; The rotating drum of the anti-accumulation stirring assembly is located within the cavity, and a corrugated groove is provided around the central side of the rotating drum. The bottom of the vertical lifting rod of the anti-accumulation stirring assembly passes through the partition and extends into the cavity, after which a sliding rod is fixed. The sliding rod extends into the rotating drum through the corrugated groove and is then fixed to a limiting ball head. Preferably, the drying assembly includes a drying drum fixed within the bracket, a drying shaft disposed within the drying drum, and a first spiral blade disposed on the drying shaft; The second servo motor and the first air collecting cylinder are fixed to both ends of the drying cylinder respectively. One end of the drying shaft is fixed to the output end of the second servo motor, and the other end of the drying shaft extends into the first air collecting cylinder, so that the ejection hole on the surface of the drying shaft is connected to the first air collecting cylinder through the channel inside the drying shaft. The fermentation assembly includes a fermentation cylinder fixed inside the bracket, a fermentation shaft arranged inside the fermentation cylinder, and a second spiral blade arranged on the fermentation shaft; A third servo motor and a second air collecting cylinder are respectively fixed at both ends of the fermentation cylinder, one end of the fermentation shaft is fixed to the output end of the third servo motor, and the other end of the fermentation shaft extends into the second air collecting cylinder, so that the ejection hole on the surface of the fermentation shaft is connected to the second air collecting cylinder through the channel inside the fermentation shaft.

[0006] Preferably, the feeding assembly includes a feeding hopper, a feeding pipe connected to the bottom side of the feeding hopper, a feeding auger built into the feeding pipe, and a fourth servo motor fixed at the top of the feeding pipe for driving the feeding auger to rotate; A discharge pipe is provided on the upper portion of the feeding pipe, and the discharge pipe is located above the material receiving funnel on the top of the drying cylinder.

[0007] Preferably, the heating component includes an air heater and a photovoltaic power generation panel that provides power to the air heater. The air outlet of the air heater is connected to a first heating pipe and a second heating pipe. The first heating pipe is connected to the bottom of the deodorization component, and the second heating pipe is connected to the first gas collecting cylinder and the second gas collecting cylinder respectively.

[0008] Preferably, the deodorizing assembly includes a deodorizing tank fixed inside the bracket, the anti-accumulation stirring assembly is arranged in the deodorizing tank, and the first servo motor is centrally fixed at the bottom of the deodorizing tank.

[0009] Preferably, the anti-accumulation stirring assembly includes a middle vertical shaft, a material dividing member, a stirring plate and a rotating drum arranged on the middle vertical shaft from top to bottom, a cross reinforcement sleeved on the middle vertical shaft, a lifting vertical rod fixed to the end of the cross reinforcement, a material-diverting piece fixed on the outside between the lifting vertical rods, a material-diverting piece movably arranged on the cross reinforcement, and a spiral material-pushing assembly driven by the material-diverting piece; An air inlet groove is provided on the outer side wall of the bottom of the sliding rod, and an air injection hole connected to the air inlet groove is also provided on the surface of the sliding rod.

[0010] Preferably, the material distribution member includes a material distribution plate fixed on the upper part of the middle vertical shaft, triangular plates evenly spaced on the upper end of the material distribution plate, and a third spiral blade fixed after the top of the middle vertical shaft extends into the interior of the second connecting pipe.

[0011] Preferably, the cross reinforcement member includes a sleeve that is sleeved up and down on the middle vertical shaft, a connecting plate fixed between the sleeve and the corresponding lifting vertical rod, and a raised seat symmetrically fixed on both sides of the outer end of the connecting plate; The outer side wall of the raised seat is provided with a mounting groove; The material-diverting member includes a rotating disk movably connected to the mounting groove by a short shaft and a material-diverting plate fixed to the side of the rotating disk by a convex plate; The spiral pusher assembly includes a gear movably connected to the mounting slot by a long shaft, and a spiral pusher piece fixed after the long shaft extends out of the mounting slot; The gear meshes with the teeth on the side of the turntable.

[0012] Compared with the prior art, the present invention has the following beneficial effects: Hot air is introduced through the sliding rod of the anti-accumulation stirring component: the hot air from the heating component is sent into the cavity at the bottom of the deodorizing tank through the first heating pipe, enters the jet hole through the air inlet groove of the sliding rod, and is directly ejected from the inside of the raw material, avoiding the problem of hot air being blocked by accumulated raw materials when entering from the bottom of the tank in traditional devices. Multi-dimensional air jet design: The sliding rod moves up and down with the lifting vertical rod, and the air jet holes form a dynamic air jet path in the raw material layer, ensuring that the hot air evenly penetrates the entire raw material pile, significantly improving the efficiency of odor removal.

[0013] The anti-accumulation stirring component integrates the material dividing parts, stirring plates, material-discharging pieces and spiral pushing components to achieve the synergistic effect of "dispersion-turning-pushing-loosening": the material dividing plate and the triangular plate will initially disperse the fallen raw materials to avoid initial accumulation; the stirring plate will radially turn the raw materials to break up the surface lumps; the lifting vertical rod drives the material-discharging piece to move up and down, loosening the raw materials from the axial direction, and reducing the raw material stacking density; the spiral pushing piece is driven by the meshing of the gear and the turntable, and realizes forward and reverse pushing as the lifting vertical rod moves up and down to ensure that the raw materials are in a loose state; the multiple components of the anti-accumulation stirring component move in coordination to keep the raw materials in a dynamic loose state at all times, and cooperate with the dynamic air jet of the sliding rod to form a closed-loop process of "hot air penetration-raw material turning-odor release". The raw materials are in a loose state and in full contact with the hot air, and the odor can be quickly brought out by the hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention as a whole; Figure 2 It is a second three-dimensional structural schematic diagram of the present invention as a whole; Figure 3It is a cross-sectional structure schematic diagram of the drying assembly, fermentation assembly and deodorization assembly of the present application; Figure 4 It is a cross-sectional structure schematic diagram of the deodorization assembly of the present application; Figure 5 It is a three-dimensional structure schematic diagram of the intermediate vertical shaft, distribution member, stirring plate and rotating drum connection of the present application; Figure 6 It is a three-dimensional structure schematic diagram of the cross reinforcement and lifting vertical rod fixation of the present application; Figure 7 It is a three-dimensional structure schematic diagram of the cross reinforcement, lifting vertical rod, poking member and spiral pushing assembly arrangement of the present application; Figure 8 It is a structure schematic diagram of the poking member and spiral pushing assembly connection of the present application; Figure 9 It is a cross-sectional structure schematic diagram of the poking member, spiral pushing assembly and protruding seat connection of the present application; Figure 10 It is a three-dimensional structure schematic diagram of the anti-accumulation stirring assembly after the lifting vertical rod moves downward of the present application; Figure 11 It is a three-dimensional structure schematic diagram of the anti-accumulation stirring assembly after the lifting vertical rod moves upward of the present application.

[0015] In the figure: 1, photovoltaic power generation panel; 2, air heater; 3, first heat supply pipe; 4, second heat supply pipe; 5, feeding hopper; 6, feeding pipe; 61, discharging pipe; 7, fourth servo motor; 8, receiving hopper; 9, drying cylinder; 10, fermentation cylinder; 11, deodorization tank; 111, discharging door; 112, cavity; 113, partition; 12, support; 13, first gas collecting cylinder; 14, second gas collecting cylinder; 15, first communication pipe; 16, second communication pipe; 17, second servo motor; 18, third servo motor; 19, drying rotating shaft; 20, first spiral blade; 21, fermentation rotating shaft; 22, ejection hole; 23, second spiral blade; 24, first servo motor; 25, anti-accumulation stirring assembly; 2501, third spiral blade; 2502, distribution disc; 2503, triangular plate; 2504, stirring plate; 2505, intermediate vertical shaft; 2506, rotating drum; 2507, corrugated slot; 2508, lifting vertical rod; 2509, poking piece; 2510, sleeve; 2511, connecting plate; 2512, protruding seat; 2513, mounting groove; 2514, air injection hole; 2515, air inlet groove; 2516, sliding connecting rod; 2517, limiting ball head; 2518, end cover; 2519, spiral pushing piece; 2520, poking plate; 2521, long shaft; 2522, gear; 2523, rotating disc; 2524, protruding plate; 2525, short shaft; 2526, tooth. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example: See also Figure 1-11 , the present invention provides a technical solution: A sub-low temperature stable cow dung fermentation cow bedding device includes a bracket 12, a heating component, and a feeding component. The bracket 12 is provided with a drying component, a fermentation component, and a deodorizing component from top to bottom. The drying component and the fermentation component are connected by a first connecting pipe 15, and the fermentation component and the deodorizing component are connected by a second connecting pipe 16. The drying assembly includes a drying drum 9 fixed inside the bracket 12, a drying shaft 19 provided inside the drying drum 9, and a first spiral blade 20 fixedly provided on the drying shaft 19; A second servo motor 17 and a first air collecting cylinder 13 are fixed to both ends of the drying cylinder 9, respectively. One end of a drying shaft 19 is fixed to the output end of the second servo motor 17, and the other end of the drying shaft 19 extends into the first air collecting cylinder 13, so that the ejection hole 22 on the surface of the drying shaft 19 is connected to the first air collecting cylinder 13 through the channel inside the drying shaft 19; The second servo motor 17 is controlled by a PLC and drives the drying shaft 19 and the first spiral blade 20 to rotate, thereby stirring the raw materials in the drying drum 9. After the hot air is ejected into the drying drum 9 through the ejection holes 22 on the surface of the drying shaft 19, the raw materials are evenly dried. The fermentation assembly includes a fermentation cylinder 10 fixed inside a support 12, a fermentation shaft 21 disposed inside the fermentation cylinder 10, and a second spiral blade 23 disposed on the fermentation shaft 21; The third servo motor 18 and the second gas collecting cylinder 14 are respectively fixed at both ends of the fermentation cylinder 10, one end of the fermentation shaft 21 is fixed to the output end of the third servo motor 18, and the other end of the fermentation shaft 21 extends into the second gas collecting cylinder 14, so that the ejection hole 22 on the surface of the fermentation shaft 21 is connected to the second gas collecting cylinder 14 through the channel inside the fermentation shaft 21.

[0018] The third servo motor 18 is controlled by a PLC. The third servo motor 18 drives the fermentation shaft 21 and the second spiral blade 23 to rotate, thereby stirring the raw materials in the fermentation cylinder 10. After the hot air is ejected into the fermentation cylinder 10 through the ejection hole 22 on the surface of the fermentation shaft 21, the raw materials are uniformly heated until the temperature quickly reaches the suitable temperature of the fermentation flora, and the dried cow dung raw materials are efficiently converted into high-quality cow mattress materials through the fermentation of the flora.

[0019] The drying cylinder 9 and the fermentation cylinder 10 are connected by a first connecting pipe 15 , and a first electric valve controlled by a PLC is provided on the first connecting pipe 15 . When the first electric valve is opened, the raw materials in the drying cylinder 9 enter the fermentation cylinder 10 .

[0020] The feeding component is used to transport the raw materials after solid-liquid separation to the drying component; The feeding assembly includes a feeding hopper 5, a feeding pipe 6 connected to the bottom side of the feeding hopper 5, a feeding auger built into the feeding pipe 6, and a fourth servo motor 7 fixed at the top of the feeding pipe 6 for driving the feeding auger to rotate; A discharge pipe 61 is provided on the upper portion of the feeding pipe 6 , and the discharge pipe 61 is located above the receiving funnel 8 on the top of the drying cylinder 9 .

[0021] The fourth servo motor 7 is controlled by PLC. The fourth servo motor 7 drives the feeding auger to rotate, and transmits the cow dung raw material in the feeding hopper 5 to the discharge pipe 61 through the feeding pipe 6, and then falls to the receiving funnel 8 through the discharge pipe 61, and finally enters the receiving funnel 8.

[0022] The heating component is used to provide hot air to the drying component and the fermentation component to achieve drying and fermentation of the raw materials; The heating component includes an air heater 2 and a photovoltaic power generation panel 1 that provides power for the air heater 2. The air outlet of the air heater 2 is connected to a first heating pipe 3 and a second heating pipe 4. The first heating pipe 3 is connected to the bottom of the deodorization component, and the second heating pipe 4 is connected to the first gas collecting cylinder 13 and the second gas collecting cylinder 14 respectively.

[0023] The air heater 2 is equipped with an electric heating wire and a temperature detector. The temperature detector is used to detect the temperature of the air heated by the electric heating wire so as to introduce hot air of suitable temperature into the drying cylinder 9, the fermentation cylinder 10 and the deodorizing tank 11 respectively.

[0024] The anti-accumulation stirring component 25 built into the deodorization component stirs the fermented raw materials under the drive of the first servo motor 24. At the same time, the heating component introduces hot air into the deodorization component through the anti-accumulation stirring component 25 to achieve full contact between the hot air and the raw materials until the hot air brings out the odor in the raw materials to achieve deodorization.

[0025] The deodorizing assembly includes a deodorizing tank 11 fixed inside a bracket 12 , a discharge door 111 is provided on the lower side of the deodorizing tank 11 , an anti-accumulation stirring assembly 25 is provided in the deodorizing tank 11 , and a first servo motor 24 is centrally fixed at the bottom of the deodorizing tank 11 .

[0026] The first servo motor 24 is controlled by the PLC, and the first servo motor 24 drives the anti-accumulation stirring assembly 25 to rotate; The deodorizing tank 11 has a cavity 112 formed on the lower side thereof by a partition 113; The anti-accumulation stirring assembly 25 includes a middle vertical shaft 2505, a material dividing member, a stirring plate 2504 and a rotating drum 2506 arranged on the middle vertical shaft 2505 from top to bottom, a cross reinforcement member sleeved on the middle vertical shaft 2505, a lifting vertical rod 2508 fixed to the end of the cross reinforcement member, a material shifting piece 2509 fixed on the outside between the lifting vertical rods 2508, a material shifting member movably arranged on the cross reinforcement member, and a spiral material pushing assembly driven by the material shifting member. The rotating drum 2506 of the anti-accumulation stirring assembly 25 is located in the cavity 112. A corrugated groove 2507 is provided around the central side of the rotating drum 2506. The bottom of the lifting vertical rod 2508 of the anti-accumulation stirring assembly 25 passes through the partition 113 and extends into the interior of the cavity 112. A sliding rod 2516 is fixed thereto. The sliding rod 2516 extends into the interior of the rotating drum 2506 through the corrugated groove 2507 and is fixed thereto a limiting ball head 2517. An air inlet groove 2515 is provided on the outer side wall of the bottom of the sliding rod 2516, and an air jet hole 2514 is provided on the surface of the sliding rod 2516 and connected to the air inlet groove 2515. The diameter of the air jet hole 2514 can be set according to actual conditions to avoid blockage caused by the raw material entering the air jet hole 2514.

[0027] The hot air from the heating assembly is fed into the cavity 112 at the bottom of the deodorizing tank 11 through the first heating pipe 3, enters the jet hole 2514 through the air inlet groove 2515 of the sliding rod 2516, and is evenly sprayed into the raw material. The hot air contacts the raw material evenly and fully removes the odor in the raw material.

[0028] Normally, the first heat supply pipe 3 is directly connected to the storage chamber of the raw materials inside the deodorizing tank 11. The raw materials will accumulate at the bottom of the storage chamber, blocking the connection between the first heat supply pipe 3 and the storage chamber, causing the hot air to be unable to smoothly enter the storage chamber.

[0029] The method of charging hot air into the deodorizing tank 11 of the present invention can prevent the situation in which the hot air is difficult to be charged into the material storage cavity of the deodorizing tank 11 due to accumulation of raw materials.

[0030] The distributing member includes a distributing disc 2502 fixed on the upper part of the middle vertical shaft 2505, triangular plates 2503 distributed at equal intervals on the upper end of the distributing disc 2502, and a third spiral blade 2501 fixed on the top of the middle vertical shaft 2505 and extending into the inside of the second communication pipe 16.

[0031] The cross reinforcing member includes a sleeve 2510 sleeved on the middle vertical shaft 2505, a connecting plate 2511 fixed between the sleeve 2510 and the corresponding lifting vertical rod 2508, and a protruding seat 2512 fixed symmetrically on the outer side end of the connecting plate 2511. An installation groove 2513 is arranged on the outer side wall of the protruding seat 2512, and an end cover 2518 is used for protection and plugging on the outer side of the installation groove 2513. The stirring member includes a rotating disc 2523 movably connected to the installation groove 2513 by using a short shaft 2525, and a stirring plate 2520 fixed on the side edge of the rotating disc 2523 by using a convex plate 2524. The spiral pushing assembly includes a gear 2522 movably connected to the installation groove 2513 by using a long shaft 2521, and a spiral pushing piece 2519 fixed on the installation groove 2513 by using the long shaft 2521; the long shaft 2521 is fixedly connected with the gear 2522, and the long shaft 2521 penetrates through the end cover 2518 and the protruding seat 2512 at both ends respectively. The gear 2522 is engaged with the teeth 2526 on the side edge of the rotating disc 2523.

[0032] Specifically, in use: 1. Raw material feeding: automatically conveyed to the drying assembly.

[0033] The solid-liquid separated cow dung raw material is conveyed to the drying cylinder 9 by the feeding assembly: The operator puts the raw material into the feeding hopper 5, the fourth servo motor 7 (controlled by the PLC) drives the feeding auger to rotate, the raw material is conveyed upward along the feeding pipe 6, falls into the receiving hopper 8 at the top of the drying cylinder 9 through the discharge pipe 61, and finally enters the drying cylinder 9.

[0034] The continuous pushing of the feeding auger ensures that the raw material is evenly fed into the drying assembly, avoiding the problems of accumulation or material breakage caused by manual feeding.

[0035] 2. Drying treatment: uniform dehydration is realized by cooperation of hot air and stirring.

[0036] The heat supply assembly provides hot air for the drying process: The photovoltaic power generation panel 1 supplies power to the air heater 2, the electric heating wire of the air heater 2 heats the air, the temperature detector monitors the hot air temperature in real time (adapted to the drying demand), and the hot air is sent into the first gas collecting cylinder 13 through the second heat supply pipe 4, such as Figure 3As shown, the hot air then enters through the channel at the left end of the drying shaft 19, and is ejected into the drying cylinder 9 through the ejection holes 22 on the surface of the drying shaft 19, thereby achieving uniform drying of the raw materials. Raw material processing in drying drum 9: The second servo motor 17 (controlled by the PLC) drives the drying shaft 19 and the first spiral blade 20 to rotate, stirring the raw materials. At the same time, the hot air in the first air collecting cylinder 13 passes through the internal channel of the drying shaft 19 and is evenly sprayed into the drying cylinder 9 from the ejection holes 22 on its surface, fully contacting the stirred raw materials to achieve rapid dehydration (the moisture content is reduced to 40-50%, meeting the requirements of subsequent fermentation).

[0037] 3. The dried raw materials enter the fermentation component: The PLC controls the first electric valve on the first connecting pipe 15 to open, and the dried raw materials fall into the fermentation cylinder 10 through the first connecting pipe 15 .

[0038] In a sub-low temperature environment, the photovoltaic panel 1 supplies power to the air heater 2. The electric heating wire of the air heater 2 heats the air, and the temperature detector monitors the hot air temperature in real time (to adapt to fermentation needs). The hot air from the heating assembly is fed into the second air collecting cylinder 14 through the second heating pipe 4, and then sprayed into the fermentation cylinder 10 through the ejection hole 22 of the fermentation shaft 21, so that the temperature inside the cylinder is stabilized and adapted to the activity of the fermentation bacteria. The third servo motor 18 (controlled by a PLC) drives the fermentation shaft 21 and the second spiral blade 23 to rotate, continuously stirring the raw materials, achieving homogeneous mixing of the cow dung and the bacterial agent, continuous oxygen supply, and efficient heat and mass transfer, effectively preventing the raw materials from agglomerating while completing the directional transportation of the raw materials, thereby ensuring the stable and efficient operation of the aerobic fermentation process.

[0039] Ensure that the hot air is in uniform contact with the raw materials, and the bacterial flora (such as actinomycetes and yeast) can efficiently decompose the organic matter in the cow dung at a suitable temperature, converting it into a loose and stable bedding matrix (the fermentation cycle is shortened to 24-48 hours).

[0040] At the same time, a small amount of high-temperature resistant bacteria is added to the fermentation cylinder 10 to quickly establish and maintain a high-temperature environment of >55°C to accelerate the decomposition of organic matter and achieve complete inactivation of pathogens.

[0041] 4. Deodorization treatment: The fermented raw materials enter the deodorization component: The fermented raw materials fall into the deodorizing tank 11 through the second connecting pipe 16 , and the third spiral blade 2501 rotates along the middle vertical shaft 2505 to evenly distribute the raw materials into the deodorizing tank 11 .

[0042] The raw materials continue to decompose in the deodorizing tank 11, and the humus-rich materials efficiently capture ammonia through the dual effects of physical adsorption and chemical chelation. At the same time, the mesophilic nitrifying bacteria (such as Nitrosomonas and Nitrobacter) enriched in the raw materials gradually oxidize the adsorbed ammonia nitrogen into nitrite and nitrate, completing the biological transformation of ammonia.

[0043] By using the fermentation end product (composted litter) as the deodorization medium, there is no need to add external fillers, which completely eliminates the filler replacement costs of traditional biological filter towers.

[0044] Subsequently, the hot air from the heating assembly is fed into the cavity 112 at the bottom of the deodorizing tank 11 through the first heating pipe 3, enters the air injection hole 2514 through the air inlet groove 2515 of the sliding rod 2516, and is evenly sprayed into the raw material; The sliding rod 2516 moves up and down with the lifting vertical rod 2508, and the air jet hole 2514 forms a dynamic air jet path in the raw material layer, ensuring that the hot air evenly penetrates the entire raw material pile (the contact area is increased by more than 60% compared with the traditional method), significantly improving the efficiency of removing odor.

[0045] The first servo motor 24 drives the anti-accumulation stirring assembly 25 to work: The material distribution plate 2502 and the triangular plate 2503 initially disperse the raw materials, and the stirring plate 2504 stirs the raw materials; When the drum 2506 rotates, the corrugated slots 2507 drive the sliding rods 2516 and the lifting vertical rods 2508 to move up and down, and the material shifting pieces 2509 shift the raw materials up and down to avoid accumulation; When the lifting vertical rod 2508 drives the cross reinforcement member thereon to move downward, the material stripping plate 2520 on the cross reinforcement member rotates upward to the position as shown in FIG. Figure 10 In the state shown, at this time, the teeth 2526 engage the driving gear 2522, driving the spiral push piece 2519 to rotate, pushing the edge raw materials to the center, ensuring that the hot air is fully in contact with the raw materials and taking away the remaining odor (deodorization rate ≥ 90%).

[0046] When the lifting vertical rod 2508 drives the cross reinforcement thereon to move upward, the material shifting plate 2520 on the cross reinforcement shifts the raw material upward. At the same time, the material shifting plate 2520 rotates downward to the position as shown in FIG. Figure 11 In the state shown, at this time, the teeth 2526 engage the driving gear 2522, driving the spiral push piece 2519 to rotate, pushing the central raw material to the edge, ensuring that the hot air is fully in contact with the raw material and taking away odors such as ammonia (deodorization rate ≥ 90%).

[0047] The top of the deodorizing tank 11 is connected to the odor adsorption tank through an air duct, so that the gas flowing to the top of the deodorizing tank 11 enters the odor adsorption tank through the air duct to perform deodorization again; Final product: The processed raw material is discharged through the discharge gate 111, which is high-quality cattle mattress material.

[0048] In Inner Mongolia, the primary methods for recycling cow dung into bedding are natural fermentation and constant-temperature heating fermentation. The natural fermentation method involves solid-liquid separation followed by stacking and fermentation to produce bedding. While simple and cost-effective, it suffers from issues such as difficult temperature control and low efficiency. While some progress has been made through improved processes such as the addition of high-temperature bacterial agents and biological drying, challenges remain, such as the inability to continuously feed and discharge materials and long processing cycles. Particularly during the autumn and winter months in Northwest China (≤10°C), when temperatures fall below freezing, field data indicates that low temperatures significantly reduce microbial activity, reducing fermentation efficiency by over 40%, severely impacting production stability.

[0049] To address the problem of high moisture content in cow dung after solid-liquid separation, the present invention adds a drying component between the separation and fermentation steps. Hot air evenly penetrates the cow dung raw material, achieving rapid dehydration to a moisture content of 50-60% (the optimal fermentation range), eliminating the inhibition of high moisture on subsequent fermentation (such as oxygen diffusion obstruction and slow temperature rise), and effectively solving the problem of prolonged fermentation cycle caused by high-moisture content materials. Especially in winter, it can effectively deal with ice crystals remaining after extrusion dehydration, prevent the feed moisture content from increasing abnormally, and thus significantly alleviate the challenge of fermentation cycle extension aggravated by this.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sub-low temperature stable cow dung fermentation cow mattress device, comprising a bracket, a heating component and a feeding component, characterized in that: The interior of the bracket is provided with a drying component, a fermentation component and a deodorizing component from top to bottom, the drying component and the fermentation component are connected by a first connecting pipe, and the fermentation component and the deodorizing component are connected by a second connecting pipe; The feeding component is used to transport the raw materials after solid-liquid separation to the drying component, and the heating component is used to provide hot air to the drying component and the fermentation component to achieve drying and fermentation of the raw materials; The anti-accumulation stirring assembly built into the deodorization assembly is driven by the first servo motor to stir the fermented raw materials. At the same time, the heating assembly introduces hot air into the deodorization assembly through the anti-accumulation stirring assembly to achieve full contact between the hot air and the raw materials until the hot air removes the odor in the raw materials and deodorization is achieved. The lower side of the deodorizing tank is provided with a partition to form a cavity; The rotating drum of the anti-accumulation stirring assembly is located in the cavity, and a corrugated groove is provided around the middle side of the rotating drum. The bottom of the lifting vertical rod of the anti-accumulation stirring assembly passes through the partition and extends into the cavity and is fixed with a sliding rod. The sliding rod extends into the rotating drum through the corrugated groove and is fixed with a limiting ball head.

2. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 1, characterized in that: The drying assembly includes a drying drum fixed inside the bracket, a drying shaft arranged inside the drying drum, and a first spiral blade arranged on the drying shaft; The second servo motor and the first air collecting cylinder are fixed to both ends of the drying cylinder respectively. One end of the drying shaft is fixed to the output end of the second servo motor, and the other end of the drying shaft extends into the first air collecting cylinder, so that the ejection hole on the surface of the drying shaft is connected to the first air collecting cylinder through the channel inside the drying shaft. The fermentation assembly includes a fermentation cylinder fixed inside the bracket, a fermentation shaft arranged inside the fermentation cylinder, and a second spiral blade arranged on the fermentation shaft; A third servo motor and a second air collecting cylinder are respectively fixed at both ends of the fermentation cylinder, one end of the fermentation shaft is fixed to the output end of the third servo motor, and the other end of the fermentation shaft extends into the second air collecting cylinder, so that the ejection hole on the surface of the fermentation shaft is connected to the second air collecting cylinder through the channel inside the fermentation shaft.

3. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 2, characterized in that: The feeding assembly includes a feeding hopper, a feeding pipe connected to the bottom side of the feeding hopper, a feeding auger built into the feeding pipe, and a fourth servo motor fixed at the top of the feeding pipe for driving the feeding auger to rotate; A discharge pipe is provided on the upper portion of the feeding pipe, and the discharge pipe is located above the material receiving funnel on the top of the drying cylinder.

4. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 2, characterized in that: The heating component includes an air heater and a photovoltaic power generation panel that provides power for the air heater. The air outlet of the air heater is connected to a first heating pipe and a second heating pipe. The first heating pipe is connected to the bottom of the deodorization component, and the second heating pipe is connected to the first gas collecting cylinder and the second gas collecting cylinder respectively.

5. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 1, characterized in that: The deodorizing component comprises a deodorizing tank fixed inside a bracket, an anti-accumulation stirring component is arranged in the deodorizing tank, and a first servo motor is centrally fixed at the bottom of the deodorizing tank.

6. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 5, characterized in that: The anti-accumulation stirring assembly includes a middle vertical shaft, a material dividing member, a stirring plate and a rotating drum arranged on the middle vertical shaft in order from top to bottom, a cross reinforcement member sleeved on the middle vertical shaft, a lifting vertical rod fixed to the end of the cross reinforcement member, a material shifting piece fixed on the outside between the lifting vertical rods, a material shifting member movably arranged on the cross reinforcement member, and a spiral material pushing assembly driven by the material shifting member; An air inlet groove is provided on the outer side wall of the bottom of the sliding rod, and an air injection hole connected with the air inlet groove is also provided on the surface of the sliding rod.

7. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 6, characterized in that: The material distribution member includes a material distribution plate fixed on the upper part of the middle vertical shaft, triangular plates evenly distributed on the upper end of the material distribution plate, and a third spiral blade fixed after the top of the middle vertical shaft extends into the second connecting pipe.

8. The sub-low temperature stable cow dung fermentation cow bedding device according to claim 6, characterized in that: The cross reinforcement member includes a sleeve that is sleeved up and down on the middle vertical shaft, a connecting plate fixed between the sleeve and the corresponding lifting vertical rod, and a raised seat symmetrically fixed on both sides of the outer end of the connecting plate; The outer side wall of the raised seat is provided with a mounting groove; The material-diverting member includes a turntable movably connected to the mounting groove by a short shaft and a material-diverting plate fixed to the side of the turntable by a convex plate; The spiral pusher assembly includes a gear movably connected to the mounting slot by a long shaft, and a spiral pusher piece fixed after the long shaft extends out of the mounting slot; The gear meshes with the teeth on the side of the turntable.

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