Rake tooth type straw and cow dung compost turner

By introducing a drive structure consisting of turning rollers, spiral blades, and cutters into the compost turner, the problems of straw entanglement and uneven turning are solved, achieving efficient and uniform compost turning results.

CN224172687UActive Publication Date: 2026-04-28NINGXIA SHENGYUAN AGRI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGXIA SHENGYUAN AGRI TECH CO LTD
Filing Date
2025-05-28
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing rake-type compost turners are easily entangled by long-fiber straw, leading to frequent shutdowns for cleaning, and the turning is uneven, making them unsuitable for compost pits of different depths.

Method used

A drive structure including a turning roller, spiral blades, rake teeth, and cutter was designed. Centrifugal force is used to throw out the cutter to clean the rake teeth, the spiral blades cut the mixture of straw and cow dung, and uniform turning is achieved through the cooperation of inclined rake teeth and scraper.

Benefits of technology

This effectively prevents straw tangling, improves turning efficiency and uniformity, and ensures the quality and efficiency of composting.

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Abstract

The utility model relates to the technical field of compost turners, and discloses a rake tooth type straw and cow dung compost turner which comprises a fermentation tank, the upper portion of the fermentation tank is connected with a fixed rail, the upper side of the fixed rail is provided with a moving wheel, the middle of the moving wheel is connected with a connecting shaft, and the curved surfaces of the two ends of the connecting shaft are each rotationally connected with a baffle through a bearing. The tops of the two baffles are fixedly provided with the same supporting plate, the driving structure is rotationally arranged between the two baffles and comprises a turning roller, a spiral blade, rake teeth and a cutter, the turning roller is rotationally arranged at the bottoms of the two baffles, the spiral blade is fixedly arranged on the curved surface of the turning roller, the rake teeth are fixedly arranged on the turning roller, and the cutter is fixedly arranged on the turning roller. The cutters are movably arranged between the turning and throwing roller and the rake teeth, centrifugal force generated when the turning and throwing roller rotates enables the cutters on the two sides to be thrown out to cut straw between the rake teeth, blockage caused by the fact that the straw winds the rake teeth is avoided, and then the composting efficiency is improved.
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Description

Technical Field

[0001] This utility model belongs to the technical field of composting turning machines, specifically, it relates to a rake-tooth type straw and cow manure composting turning machine. Background Technology

[0002] With the development of agriculture and animal husbandry, the treatment of straw and cow manure has become an important issue. Composting is an effective treatment method that can convert straw and cow manure into organic fertilizer, realizing the recycling of resources. In the composting process, the compost turner plays a key role. It can improve the composting fermentation environment, promote the metabolism of microorganisms in the compost material, increase the fermentation rate, and ensure the quality of compost products.

[0003] The prior art discloses a rake-tooth turning fermentation device (CN215102912U), which includes a fermentation tank, a support plate, fixed rake teeth, a first motor, and a rotating pulley. A fixed track is connected to the upper part of the fermentation tank, and a movable wheel is provided on the upper side of the fixed track. A first connecting shaft is connected to the middle of the movable wheel, and the end of the first connecting shaft is connected to a left baffle and a right baffle through a bearing. A support plate is fixedly connected to the upper part of the left baffle and the right baffle. The upper part of the support plate is connected to the first motor and the second motor through bolts. The first motor is connected to the rotating gear through a reducer and a transmission shaft, and the second motor is connected to the rotating pulley through a reducer and a transmission shaft. This invention drives the second connecting shaft to rotate through a transmission belt, which can stir the fermentation raw materials and achieve uniform conditioning. It can also quickly dry the materials and has the characteristics of simple structure and high stirring efficiency.

[0004] Research revealed that the existing technology's rake teeth are fixed and their shape makes them prone to getting tangled in long-fiber straw, leading to frequent machine stops for cleaning and affecting efficiency. Furthermore, the existing technology's turning rollers lack turning capabilities and cannot adapt to composting pits of different depths when used with the rake teeth, resulting in uneven turning of the straw and cow manure mixture.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A rake-tooth type straw and cow manure composting turner, including

[0008] A fermentation tank, the upper part of which is connected to a fixed track, the upper side of which is provided with a movable wheel, the middle of which is connected to a connecting shaft, and the two curved surfaces of the connecting shaft are respectively rotatably connected to a baffle through bearings, and the top of the two baffles is fixedly provided with the same support plate.

[0009] The driving structure is rotatably disposed between two baffles. The driving structure includes a turning roller, a spiral blade, rake teeth, and a cutter. The turning roller is rotatably disposed at the bottom of the two baffles. The spiral blade is fixedly disposed on the curved surface of the turning roller. The rake teeth are fixedly disposed on the turning roller. Multiple rake teeth are provided. The cutter is movably disposed between the turning roller and the rake teeth.

[0010] In a preferred embodiment of the present invention, the top surface of the support plate is symmetrically fixed with two supports, and a shaft is rotatably mounted on each of the two supports. A double-headed motor is fixedly mounted on the top surface of the support plate, and each of the two output ends of the double-headed motor is connected to a shaft. A pulley is fixed on each of the two shafts.

[0011] In a preferred embodiment of this utility model, two pairs of pulleys are provided, and the two pairs of pulleys are of different sizes. Another pulley is fixedly provided on one end of the curved surface of the connecting shaft and one end of the turning roller, and belts of different specifications are provided between the two pulleys for transmission.

[0012] In a preferred embodiment of this utility model, the turning roller has two shrinkage grooves, which are arranged symmetrically at an oblique angle. Multiple support rods are arranged in an array within the shrinkage grooves. The turning roller is fixedly connected to rake teeth through the support rods, and the rake teeth are arranged at an angle.

[0013] In a preferred embodiment of this utility model, multiple springs are arranged in an array between the cutter and the shrinkage groove, and the springs are correspondingly sleeved on the support rod. The cutter is elastically connected to the shrinkage groove through the springs.

[0014] In a preferred embodiment of this utility model, the cutter consists of multiple arc-shaped blades and a square strip, the width of the arc-shaped blades corresponding to the gap between each rake tooth of the chain, and the square strip sliding within the shrinkage groove.

[0015] In a preferred embodiment of this utility model, a pair of scrapers are provided between each pair of arc-shaped blades, and each pair of scrapers is provided to conform to the wall surface of the rake teeth. The scrapers are fixedly connected to the cutter.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By setting up a drive structure, the centrifugal force generated when the turning roller rotates causes the cutters on both sides to be thrown out continuously. The thrown cutters cut the straw between the rake teeth. At the same time, the scrapers on both sides of the rake teeth clean the surface of the rake teeth, scraping off the attached cow dung and impurities, thereby continuously cleaning the rake teeth and preventing straw from getting tangled in the rake teeth and causing blockage, thus improving the efficiency of composting.

[0018] 2. By setting spiral blades on the surface of the turning roller, when the turning roller rolls and the rake teeth move away from the ground, the spiral blades replace the rake teeth to contact the mixture of straw and cow dung, cut and crush it, and turn over the surface mixture. The synchronous use with the rake teeth can improve the turning ability of the device, so that the mixture of straw and cow dung can be turned over more evenly.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a top view of the fermentation tank of this utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the support plate of this utility model;

[0023] Figure 3 This is a disassembly diagram of the drive structure of this utility model;

[0024] Figure 4 This is a schematic diagram of a half-section of the support plate of this utility model;

[0025] Figure 5 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0026] In the diagram: 10. Fermentation tank; 11. Fixed track; 12. Support plate; 13. Dual-head motor; 14. Shaft; 15. Pulley; 16. Belt; 17. Moving wheel; 18. Turning roller; 19. Baffle; 20. Spiral blade; 21. Rake teeth; 22. Spring; 23. Cutter; 24. Scraper; 25. Shrinkage trough; 26. Support rod; 27. Connecting shaft; 28. Support. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] A rake-tooth type straw and cow manure composting turner, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, including

[0029] Fermentation tank 10, with a fixed track 11 connected to the upper part of the fermentation tank 10. A movable wheel 17 is provided on the upper side of the fixed track 11. A connecting shaft 27 is connected to the middle of the movable wheel 17. A baffle 19 is rotatably connected to the two curved surfaces of the connecting shaft 27 through bearings. The same support plate 12 is fixedly provided on the top of the two baffles 19.

[0030] The drive structure is rotatably disposed between two baffles 19. The drive structure includes a turning roller 18, a spiral blade 20, rake teeth 21, and a cutter 23. The turning roller 18 is rotatably disposed at the bottom of the two baffles 19. The spiral blade 20 is fixedly disposed on the curved surface of the turning roller 18. The rake teeth 21 are fixedly disposed on the turning roller 18. Multiple rake teeth 21 are provided. The cutter 23 is movably disposed between the turning roller 18 and the rake teeth 21.

[0031] Specifically, when using the device, the mixture of straw and cow dung is placed in the fermentation tank 10, and the baffles 19 on both sides are placed inside the fermentation tank 10. At the same time, the moving wheels 17 are placed on the upper part of the fixed track 11. During fermentation and stirring, the moving wheels 17 move along the fixed track 11. Meanwhile, the rotating turning roller 18 drives the rake teeth 21 to mix the raw materials evenly. The centrifugal force generated when the turning roller 18 rotates causes the cutters 23 on both sides to be thrown out continuously. The thrown cutters 23 cut the straw between the rake teeth 21, preventing the straw from getting tangled in the rake teeth 21 and causing blockage, thereby improving the efficiency of composting.

[0032] It is worth noting that the fermentation tank 10, fixed track 11, support plate 12 and moving wheel 17 appearing in this device are all disclosed in the prior art of a rake-tooth turning fermentation device (CN215102912U), and only need to be adapted to be used in this device, so they will not be described in detail here.

[0033] like Figure 1 and Figure 2 As shown, two supports 28 are symmetrically fixed on the top surface of the support plate 12. A shaft 14 is rotatably mounted on each of the two supports 28. A double-headed motor 13 is fixed on the top surface of the support plate 12. Each of the two output ends of the double-headed motor 13 is connected to a shaft 14. A pulley 15 is fixed on each of the two shafts 14.

[0034] like Figure 2 As shown, there are two pairs of pulleys 15, and the two pairs of pulleys 15 are of different sizes. One end of the curved surface of the connecting shaft 27 and the other end of the turning roller 18 are respectively fixed with other pulleys 15. Different belts 16 are installed between the two pulleys 15 for transmission.

[0035] The working principle is as follows: The dual-head motor 13 is connected to an external control terminal, which remotely controls the speed and on / off state of the dual-head motor 13. The control terminal controls the start of the dual-head motor 13, which drives the shafts 14 at both ends to rotate. Each shaft 14 drives its corresponding pulley 15 to rotate, thereby driving the connecting shaft 27 and the turning roller 18 to rotate through their respective belts 16 of different specifications. The connecting shaft 27 enables the moving wheel 17 to move along the fixed track 11. Similarly, the turning roller 18 drives the rake teeth 21 to rotate, using the fixed rake teeth 21 to uniformly mix and stir the raw materials. By setting spiral blades 20 on the surface of the turning roller 18, when the turning roller 18 rolls and the rake teeth 21 are away from the ground, the spiral blades 20 replace the rake teeth 21 to contact the mixture of straw and cow dung, cutting and crushing it, and turning over the surface mixture. The synchronous use with the rake teeth 21 improves the turning capacity of the device, so that the mixture of straw and cow dung can be turned over more evenly.

[0036] like Figure 3 , Figure 4 and Figure 5 As shown, the turning roller 18 has two shrinkage grooves 25, which are arranged symmetrically at an oblique angle. Multiple support rods 26 are arranged in an array inside the shrinkage grooves 25. The turning roller 18 is fixedly connected to the rake teeth 21 through the support rods 26. The rake teeth 21 are arranged at an angle.

[0037] like Figure 3 , Figure 4 and Figure 5 As shown, multiple springs 22 are arranged in an array between the cutter 23 and the shrinkage groove 25. The springs 22 are correspondingly sleeved on the support rod 26, and the cutter 23 is elastically connected to the shrinkage groove 25 through the springs 22.

[0038] like Figure 3 As shown, the cutter 23 consists of multiple curved blades and a square strip. The width of the curved blades corresponds to the gap between each rake tooth 21 of the chain, and the square strip slides within the shrinkage groove 25; as shown... Figure 5 As shown, a pair of scrapers 24 are provided between each pair of arc-shaped blades. Each pair of scrapers 24 is provided to fit the wall surface of the rake teeth 21. The scrapers 24 are fixedly connected to the cutter 23.

[0039] The working principle is as follows: When the turning roller 18 rolls, the centrifugal force generated by the rotation throws the cutter 23 out of the shrinkage groove 25. At this time, the square bar slides in the shrinkage groove 25, stretching the spring 22 and deforming. The length of the support rod 26 guides and limits the distance of its extension and contraction. At this time, each pair of scrapers 24 scrapes off the material on the surface of the corresponding rake teeth 21 through the side, thereby continuously cleaning the rake teeth. The arc-shaped blade is thrown out from between each pair of rake teeth 21 to cut the straw in the fermentation tank 10. Finally, the rake teeth 21 set in the two shrinkage grooves 25 face different directions and have opposite inclination angles. Therefore, when the turning roller 18 drives the rake teeth 21 to rotate, the cutting and crushing directions are different. Thus, the rake teeth 21 can crush and mix the straw and cow manure mixture more finely and evenly to promote the composting fermentation effect.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A rake-tooth type straw and cow manure composting turner, characterized in that, include Fermentation tank (10), the upper part of which is connected to a fixed track (11), the upper side of which is provided with a movable wheel (17), the middle part of which is connected to a connecting shaft (27), the two ends of the connecting shaft (27) are respectively connected to a baffle (19) through bearings, and the top of the two baffles (19) is fixedly provided with the same support plate (12). The driving structure is rotatably disposed between two baffles (19). The driving structure includes a turning roller (18), a spiral blade (20), rake teeth (21), and a cutter (23). The turning roller (18) is rotatably disposed at the bottom of the two baffles (19). The spiral blade (20) is fixedly disposed on the curved surface of the turning roller (18). The rake teeth (21) are fixedly disposed on the turning roller (18). There are multiple rake teeth (21). The cutter (23) is movably disposed between the turning roller (18) and the rake teeth (21).

2. The rake-tooth type straw and cow manure composting turner according to claim 1, characterized in that, The top surface of the support plate (12) is symmetrically fixed with two supports (28), and a shaft (14) is rotatably mounted on each of the two supports (28). A double-headed motor (13) is fixedly mounted on the top surface of the support plate (12). The output ends of the double-headed motor (13) are each connected to a shaft (14), and a pulley (15) is fixed on each of the two shafts (14).

3. A rake-tooth type straw and cow manure composting turner according to claim 2, characterized in that, The pulleys (15) are provided in two pairs, and the two pairs of pulleys (15) are of different sizes. One end of the connecting shaft (27) and one end of the turning roller (18) are respectively fixed with other pulleys (15). Different belts (16) are provided between the two pulleys (15).

4. A rake-tooth type straw and cow manure composting turner according to claim 3, characterized in that, The turning roller (18) has two shrinkage grooves (25) and the two shrinkage grooves (25) are arranged symmetrically at an oblique angle. Multiple support rods (26) are arranged in an array in the shrinkage grooves (25). The turning roller (18) is fixedly connected to the rake teeth (21) through the support rods (26). The rake teeth (21) are arranged at an angle.

5. A rake-tooth type straw and cow manure composting turner according to claim 4, characterized in that, Multiple springs (22) are arranged in an array between the cutter (23) and the shrinkage groove (25). The springs (22) are correspondingly sleeved on the support rod (26). The cutter (23) is elastically connected to the shrinkage groove (25) through the springs (22).

6. A rake-tooth type straw and cow manure composting turner according to claim 5, characterized in that, The cutter (23) consists of multiple arc-shaped blades and a square bar. The width of the arc-shaped blades corresponds to the gap between each rake tooth (21) of the chain. The square bar slides within the shrinkage groove (25).

7. A rake-tooth type straw and cow manure composting turner according to claim 6, characterized in that, A pair of scrapers (24) are provided between each pair of arc-shaped blades. Each pair of scrapers (24) is provided to fit the wall surface of the rake teeth (21). The scrapers (24) are fixedly connected to the cutter (23).

Citation Information

Patent Citations

  • Rake tooth turning type fermentation device

    CN215102912U