Secondary extruder for cow dung dehydration and cow dung extrusion dehydration system

Abstract

The utility model relates to a secondary extruder for cow dung dehydration and a cow dung extrusion dehydration system, which comprises a rack, a separation extruder, a first conveyor and a second conveyor, and a first roller, a second roller, a third roller and a fourth roller are rotatably mounted on the rack. The input end of the first conveyor is located below a discharging port of the separation extruding machine, a feeding hopper of the secondary extruding machine is connected with the lower portion of the output end of the first conveyor, and the input end of the second conveyor is located below a first scraping plate of the secondary extruding machine. Most moisture of cow dung can be removed after the cow dung is extruded twice by the separation extruding machine and the secondary extruding machine, the whole extruding process is automatically and sequentially operated, manual participation is not needed, the use is convenient, a large amount of manpower and working hours are saved, and the dehydration efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cow dung dehydration technical field, specifically point to a kind of secondary extruder for cow dung dehydration and cow dung extrusion dehydration system. BACKGROUND

[0002] One fourth of excrement is water, and the rest is mostly protein, inorganic matter, fat, undigested food fiber, dehydrated digestive fluid residue, and cells and dead bacteria that fall off from the intestinal tract, as well as vitamin K and vitamin B. After the excrement of a dairy farm is dehydrated, it can be backfilled to a bed, which can realize the reuse of waste and replace the original use of rice husks and other materials as bedding, thereby saving the expenses of the farm.

[0003] The traditional cow dung dehydration method is to extract the cow dung and dry it on an open space, which is time-consuming and labor-intensive, and has very low efficiency. The existing excrement dehydration method uses a separation extruder for dehydration. The principle of the separation extruder is to use a spiral-shaped twisting blade to drive the cow dung to rotate and convey it and cooperate with a filter screen to rotate and extrude the cow dung, thereby realizing the dehydration of the cow dung. However, the dehydration rate of the cow dung is low by using only the separation extruder for one-time dehydration, and the dehydration effect is poor. The cow dung usually needs to be dehydrated multiple times by the separation extruder to remove most of the water, and therefore, the cow dung needs to be manually put into the separation extruder again during the multiple dehydration processes, which is inconvenient to use, wastes a lot of labor time, and the dehydration efficiency is not ideal compared with the traditional drying method. SUMMARY

[0004] The utility model provides a secondary extruder for cow dung dehydration and a cow dung extrusion dehydration system to solve the problems in the prior art, the dehydration process of the cow dung is performed twice, the dehydration efficiency is greatly improved, and a large amount of labor time is saved.

[0005] The utility model discloses a secondary extruding machine for cattle dung dehydration, which is characterized in that a first motor for driving the first rotating roller to rotate and a second motor for driving the third rotating roller to rotate are fixedly arranged on the frame, the rotating directions of the first rotating roller and the third rotating roller are opposite, and the front sides of the first conveying belt and the second conveying belt are respectively provided with a first scraper and a second scraper, which are fixedly connected with the frame.

[0006] When the utility model is used, the first rotating roller is driven to rotate by the first motor, thereby driving the rotation of the first conveying belt, the third rotating roller is driven to rotate by the second motor, thereby driving the rotation of the second conveying belt, the first rotating roller and the second rotating roller are arranged in front of and behind each other, the third rotating roller and the fourth rotating roller are arranged in front of and behind each other, the first conveying belt and the second conveying belt are parallel, and the first conveying belt and the second conveying belt form a material passing gap. Since the rotating directions of the first rotating roller and the third rotating roller are opposite, the cattle dung is driven into the material passing gap for extrusion to realize the dehydration effect. Compared with the existing rotary extrusion, the dehydration rate is obviously improved by the up-down extrusion mode. Since the first conveying belt is provided with the water filtering hole, the discharged water is discharged from the water filtering hole. When the cattle dung is extruded and output from the front ends of the first conveying belt and the second conveying belt, the first scraper is used to scrape the cattle dung adhered to the front end of the first conveying belt, and the second scraper is used to scrape the cattle dung adhered to the front end of the second conveying belt, thereby improving the cleaning effect of the conveying belt. Since the lower end of the first scraper is inclined, the output cattle dung slides from the inclined first scraper, thereby facilitating the collection of the cattle dung.

[0007] As an optimization, a feeding hopper is fixedly arranged on the frame above the first conveying belt and at the rear side of the second conveying belt, a discharging roller is rotatably arranged in the feeding hopper, the discharging roller extends along the length direction of the feeding hopper, a plurality of blades are uniformly distributed on the outer wall of the discharging roller in the circumferential direction, and a third motor for driving the discharging roller to rotate is fixedly arranged on the outer wall of the feeding hopper. According to the optimization, the cattle dung is discharged onto the first conveying belt through the feeding hopper, and the cattle dung is uniformly discharged through the rotation of the internal discharging roller, thereby uniformly conveying and extruding the cattle dung forward.

[0008] As an optimization, a water collecting bucket is arranged on the frame below the first conveying belt.

[0009] As an optimization, the distance of the material passing gap is 1-3cm.

[0010] As an optimization, the first and second scrapers are fixed to the frame by bolts.

[0011] A cow dung extruding and dehydrating system comprises the secondary extruding machine of any of the embodiments, further comprising a separating extruding machine, a first conveying machine and a second conveying machine, the input end of the first conveying machine is below the discharging port of the separating extruding machine, the feeding hopper of the secondary extruding machine is connected below the output end of the first conveying machine, and the input end of the second conveying machine is below the first scraper of the secondary extruding machine.

[0012] The cow dung is first extruded and dehydrated by the separating extruding machine, the extruded and dehydrated cow dung is conveyed to the feeding hopper of the secondary extruding machine by the first conveying machine, the cow dung is evenly discharged to the first conveying belt by the feeding hopper, the cow dung is extruded again by the secondary extruding machine, the extruded and dehydrated cow dung falls from the first scraper to the second conveying machine, and the cow dung is conveyed and collected by the second conveying machine.

[0013] The cow dung is extruded twice by the separating extruding machine and the secondary extruding machine, and most of the water is separated from the cow dung. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a front view of the secondary extruding machine;

[0015] Fig. 2 is a side sectional view of the secondary extruding machine;

[0016] Fig. 3 is a structural schematic view of the dung extruding and dewatering system;

[0017] shown in the figure:

[0018] 1, frame, 2, first rotating roller, 3, second rotating roller, 4, third rotating roller, 5, fourth rotating roller, 6, first conveying belt, 7, second conveying belt, 8, first scraper, 9, second scraper, 10, bolt, 11, feeding hopper, 12, discharging roller, 13, blade, 14, water receiving hopper, 15, first motor, 16, second motor, 17, material passing gap, 18, separating extruding machine, 19, first conveying machine, 20, second conveying machine. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of the present scheme, the present scheme will be described below through specific embodiments.

[0020] As shown in Figs. 1-2 , a secondary extruding machine for dewatering of dung, comprising a frame 1, the frame 1 is rotatably installed with a first rotating roller 2, a second rotating roller 3, a third rotating roller 4 and a fourth rotating roller 5. The first rotating roller 2 and the second rotating roller 3 are distributed in front of and behind each other and are oppositely arranged, and the first rotating roller 2 and the second rotating roller 3 are drivingly connected through a first conveying belt 6, and the first conveying belt 6 is provided with water filtering holes in the circumferential direction. The third rotating roller 4 is located above the first rotating roller 2, the third rotating roller 4 and the fourth rotating roller 5 are distributed in front of and behind each other and are oppositely arranged, and the third rotating roller 4 and the fourth rotating roller 5 are drivingly connected through a second conveying belt 7, and the second conveying belt 7 and the first conveying belt 6 form a material passing gap 17. The frame 1 is also fixedly provided with a first motor 15 for driving the first rotating roller 2 to rotate and a second motor 16 for driving the third rotating roller 4 to rotate, and the rotating directions of the first rotating roller 2 and the third rotating roller 4 are opposite.

[0021] In use, the first rotating roller 2 is driven to rotate by the first motor 15, thereby driving the rotation of the first conveying belt 6. The third rotating roller 4 is driven to rotate by the second motor 16, thereby driving the rotation of the second conveying belt 7. Since the first rotating roller 2 and the second rotating roller 3 are distributed in front of and behind each other, and the third rotating roller 4 and the fourth rotating roller 5 are also distributed in front of and behind each other, the second conveying belt 7 and the first conveying belt 6 are arranged in parallel, thereby forming a material passing gap 17. Since the rotating directions of the first rotating roller 2 and the third rotating roller 4 are opposite, the first conveying belt 6 and the second conveying belt 7 can drive the dung to be conveyed to the front end, so that the dung passes through the material passing gap 17, and the up-and-down extrusion of the dung by the first conveying belt 6 and the second conveying belt 7 achieves the dewatering effect. Since the first conveying belt 6 is provided with water filtering holes, the water separated out during dewatering is discharged from the water filtering holes.

[0022] Specifically, the distance of the passing gap 17 is 1-3 cm. If the gap is too small, the cow dung cannot pass through the gap smoothly, and thus is accumulated behind the conveying belt. If the gap is too large, the extrusion effect on the cow dung is reduced, and the dehydration rate is reduced.

[0023] To facilitate the placement of the cow dung on the first conveying belt 6 for conveying, the frame 1 is fixed with a feeding hopper 11 above the first conveying belt 6 and behind the second conveying belt 7. The feeding hopper 11 is rotatably provided with a discharging roller 12 extending along the length direction of the feeding hopper 11. The outer wall of the discharging roller 12 is circumferentially provided with a plurality of blades 13. The feeding hopper 11 is fixed with a third motor driving the discharging roller 12 to rotate. The cow dung is discharged onto the first conveying belt 6 through the feeding hopper 11. When the feeding hopper 11 discharges, the discharging roller 12 inside the feeding hopper 11 rotates to drive the blades 13 to rotate, so that the cow dung is uniformly discharged, and thus the cow dung is uniformly discharged onto the first conveying belt.

[0024] Preferably, the frame 1 is fixed with a water collecting hopper 14 below the first conveying belt 6. The water collecting hopper 14 collects and discharges the water discharged from the first conveying belt 6, so that the sewage is conveniently treated.

[0025] The front sides of the first conveying belt 6 and the second conveying belt 7 are respectively provided with a first scraper 8 and a second scraper 9, which are fixed to the frame 1. The upper end of the first scraper 8 is attached to the front end of the first conveying belt 6, and the lower end of the first scraper 8 is inclined away from the first conveying belt 6. The lower end of the second scraper 9 is attached to the front end of the second conveying belt 7, and the upper end of the second scraper 9 is inclined away from the second conveying belt 7.

[0026] Since the cow dung is easily adhered to the first conveying belt 6 and the second conveying belt 7 during the extrusion process, the cow dung adhered to the front end of the first conveying belt 6 is scraped by the first scraper 8, and the cow dung adhered to the front end of the second conveying belt 7 is scraped by the second scraper 9, so that the cleaning is convenient and the labor workload is reduced. Since the lower end of the first scraper 8 is inclined, the output cow dung slides along the first scraper 8, so that the cow dung is conveniently collected.

[0027] Preferably, the first scraper 8 and the second scraper 9 are fixed to the frame 1 by bolts 10. The scraper is fixed by screwing, which is convenient for disassembly and assembly, and is convenient for adjusting the scraping angle of the scraper.

[0028] A cow manure extrusion and dewatering system includes a secondary extruder as described in any embodiment of this application, and further includes a separating extruder 18, a first conveyor 19, and a second conveyor 20. The input end of the first conveyor 19 is located below the discharge port of the separating extruder 18, the feed hopper 11 of the secondary extruder is connected below the output end of the first conveyor 19, and the input end of the second conveyor 20 is located below the first scraper 8 of the secondary extruder.

[0029] The separating extruder 18, the first conveyor 19, and the second conveyor 20 described in this embodiment are all existing known technologies. The separating extruder 18 adopts the structure disclosed in publication numbers CN213533920U or CN215750931U.

[0030] This system removes most of the moisture from cow manure after it has been squeezed twice by the separating extruder 18 and the secondary extruder. The entire extrusion process is automated and sequential, requiring no manual intervention, thus saving a significant amount of manpower and time and greatly improving dehydration efficiency.

[0031] Working Principle: The cow dung is first dehydrated by a separating extruder 18. After dehydration, the dung is conveyed by a first conveyor 19 to the feed hopper 11 of the secondary extruder. The discharge roller 12 in the feed hopper 11 rotates, driving the blades 13 to rotate, thus evenly discharging the dung onto the first conveyor belt 6. The first motor 15 and the second motor 16 drive the first rotating roller 2 and the third rotating roller 4 to rotate, causing the first conveyor belt 6 and the second conveyor belt 7 to rotate in opposite directions, thus conveying the dung forward into the material passage 17. Through the upward and downward compression of the second conveyor belt 7 and the first conveyor belt 6, the dung undergoes secondary dehydration, and the dehydrated water is discharged through the filter holes of the first conveyor belt 6. The dung after secondary compression slides from the first scraper 8 onto the second conveyor 20 for collection. Since most of the moisture has been removed after the secondary extrusion by the separating extruder 18 and the secondary extruder, the collected dung can be dried simply by air-drying or baking.

[0032] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A secondary extruder for dewatering cow manure, comprising a frame (1), characterized in that: The frame (1) is rotatably mounted with a first roller (2), a second roller (3), a third roller (4), and a fourth roller (5). The first roller (2) and the second roller (3) are arranged in a front-to-back manner and are opposite to each other. The first roller (2) and the second roller (3) are connected by a first conveyor belt (6). The first conveyor belt (6) has filter holes distributed circumferentially. The third roller (4) is located above the first roller (2). The third roller (4) and the fourth roller (5) are arranged in a front-to-back manner and are opposite to each other. The third roller (4) and the fourth roller (5) are connected by a second conveyor belt (7). A material passage gap (17) is formed between the second conveyor belt (7) and the first conveyor belt (6). The frame ( 1) A first motor (15) for driving the first rotating roller (2) to rotate and a second motor (16) for driving the third rotating roller (4) to rotate are also fixed on the frame. The first rotating roller (2) and the third rotating roller (4) rotate in opposite directions. The front sides of the first conveyor belt (6) and the second conveyor belt (7) are respectively provided with a first scraper (8) and a second scraper (9). The first scraper (8) and the second scraper (9) are both fixed to the frame (1). The upper end of the first scraper (8) is in contact with the front end of the first conveyor belt (6), and the lower end of the first scraper is inclined away from the first conveyor belt. The lower end of the second scraper (9) is in contact with the front end of the second conveyor belt (7), and the upper end of the second scraper is inclined away from the second conveyor belt.

2. The secondary extruder for dewatering cow manure according to claim 1, characterized in that: The frame (1) is fixedly provided with a feed hopper (11) located above the first conveyor belt (6) and behind the second conveyor belt (7). A discharge roller (12) is rotatably installed inside the feed hopper (11). The discharge roller extends along the length of the feed hopper. Multiple blades (13) are evenly distributed circumferentially on the outer wall of the discharge roller (12). A third motor for driving the discharge roller (12) to rotate is fixedly provided on the outer wall of the feed hopper (11).

3. The secondary extruder for dewatering cow manure according to claim 1, characterized in that: A water receiving hopper (14) located below the first conveyor belt (6) is fixed on the frame (1).

4. The secondary extruder for dewatering cow manure according to claim 1, characterized in that: The distance of the material passage gap (17) is 1~3cm.

5. The secondary extruder for dewatering cow manure according to claim 1, characterized in that: The first scraper (8) and the second scraper (9) are both fixed to the frame (1) by bolts (10).

6. A cow dung extrusion and dewatering system, characterized in that: The secondary extruder as described in any one of claims 1 to 5 further includes a separating extruder (18), a first conveyor (19), and a second conveyor (20). The input end of the first conveyor (19) is located below the discharge port of the separating extruder (18), the feed hopper (11) of the secondary extruder is connected below the output end of the first conveyor (19), and the input end of the second conveyor (20) is located below the first scraper (8) of the secondary extruder.

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