A single-axis feed preparation machine

Abstract

This invention provides a single-shaft feed preparation machine, including a stirring shaft rotatably mounted inside the machine housing. Stirring blades are arranged in an axial array on the stirring shaft. Two sets of vertically oriented fixing grooves are symmetrically arranged at both ends of the stirring shaft. Telescopic rod assemblies are inserted into the fixing grooves. A long mounting seat is fixedly mounted on the upper end of each telescopic rod assembly. A scraper of matching length is fixedly mounted on the upper end of the long mounting seat. The outer end of the scraper is elastic, and the scraper is located between the stirring blades and the machine housing wall. By using fixing grooves and locking pins on the stirring shaft, the telescopic rod assemblies, long mounting seats, and scrapers are fixed to the stirring shaft and rotate with it. The scraper remains in contact with the housing wall. When the scraper moves to the bottom of the stirring blades, it can scoop up the feed accumulated at the bottom of the housing, rotate it directly above the stirring blades, and then drop it for mixing. This solves the problem that traditional stirring blades lack the ability to lift and mix materials accumulated at the bottom of the housing due to insufficient material lifting capacity.

Description

Technical Field

[0001] This utility model relates to the field of feed processing technology, specifically a single-shaft feed preparation machine. Background Technology

[0002] A single-shaft feed preparation machine is a specialized piece of equipment used in agriculture and animal husbandry. It is primarily used to process various raw materials (such as grains, soybean meal, corn, etc.) into pelleted or block-shaped feed suitable for animal consumption. This machine uses a rotating shaft to drive internal cutters or a screw propeller to cut, mix, and compress materials, thereby shaping them into the desired feed form.

[0003] Traditional single-shaft feed preparation machines employ a main stirring shaft and radially arrayed stirring blades to cut, crush, and homogenize materials. Based on mechanical safety design principles, a dynamic clearance (approximately 15-25 mm) must be maintained between the tip of the stirring blades and the inner wall of the mixing chamber to prevent metal-to-metal friction during high-speed operation and overload jamming when encountering foreign objects. However, the current blade configuration has a functional design flaw: its planar blades lack a material lifting angle during rotation, resulting in the inability to form an effective vortex in the sediment layer (approximately 30-50 mm thick) at the bottom of the mixing chamber. This leads to a decrease in material mixing uniformity (CV value) of approximately 12-18%, significantly affecting the consistency of the final product quality. This structural defect is particularly pronounced in the processing of viscous materials (moisture content > 18%), easily leading to material caking. Utility Model Content

[0004] The purpose of this invention is to provide a single-shaft feed preparation machine, which aims to solve the problem in the prior art that feed easily accumulates in the gap between the end of the stirring blade and the inner wall of the mixing chamber, and the accumulated feed cannot be effectively lifted by the stirring blade, resulting in poor mixing effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a single-shaft feed preparation machine, comprising a stirring shaft rotatably disposed inside the machine housing, stirring blades arranged in an axial array on the stirring shaft, two sets of vertically opened fixing grooves symmetrically disposed at both ends of the stirring shaft, telescopic rod assemblies inserted into the fixing grooves, a long strip mounting seat fixedly disposed at the upper end of the two telescopic rod assemblies, a scraper matching the length of the long strip mounting seat fixedly disposed at the upper end of the long strip mounting seat, the outer end of the scraper being elastic, and the scraper being located between the stirring blades and the machine housing wall, so that when the scraper moves to the bottom of the hopper, it can scoop up the feed accumulated at the bottom of the hopper, and a locking pin assembly for fixing the telescopic rod assemblies is provided on the stirring shaft.

[0006] Preferably, the locking pin assembly includes a U-shaped seat fixedly mounted on the stirring shaft, through holes symmetrically opened on two side plates of the U-shaped seat, a pin inserted between the two through holes, a first spring coaxially sleeved on the pin, a limiting rod for limiting the first spring on the pin, and a circular hole opened on the telescopic rod at a position corresponding to the pin, the pin being inserted into the circular hole to fix the telescopic rod.

[0007] Preferably, the telescopic rod includes a sleeve, and a push rod is slidably disposed inside the sleeve. A second spring is fixedly disposed at the bottom of the push rod, and the bottom of the second spring is fixedly connected to the bottom of the inner cavity of the sleeve.

[0008] Preferably, a pull rod is fixedly provided at the end of the pin away from the telescopic rod.

[0009] Preferably, the scraper consists of two parts, including a metal frame fixed to the strip mounting base and a rubber strip vulcanized onto the frame.

[0010] The beneficial effects of this utility model are:

[0011] 1. In use, this utility model fixes the telescopic rod assembly, the long strip mounting base and the scraper to the mixing shaft by opening a fixing groove and locking pin assembly on the mixing shaft, and rotates with the mixing shaft. The scraper continuously adheres to the bin wall. When the scraper moves to the bottom of the mixing blade, it can scoop up the feed accumulated at the bottom of the bin and rotate it directly to the top of the mixing blade before it falls and is mixed. This solves the problem that the traditional mixing blade has insufficient material lifting capacity and cannot scoop up and mix the material accumulated at the bottom of the bin.

[0012] 2. When using this utility model, the telescopic rod assembly, long strip mounting base and scraper can be quickly removed and replaced through the locking pin assembly, maintaining the fit between the end of the scraper and the bin wall, thereby maintaining the scooping effect on the feed piled up at the bottom of the bin.

[0013] 3. When this utility model is in use, the length of the telescopic rod assembly can be automatically adjusted to adapt to the change in the distance between the stirring shaft and the bottom of the bin when the scraper passes through the gap between the stirring blade and the bottom of the bin. Attached Figure Description

[0014] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding portions, wherein:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the scraper of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the machine casing of this utility model after the stirring shaft is cut off and the telescopic rod is removed;

[0018] Figure 4 This is a utility model Figure 2 Enlarged structural diagram of A in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of the second spring inside the telescopic rod of this utility model.

[0020] In the diagram: 1. Housing; 2. Stirring shaft; 3. Fixing groove; 4. Sleeve; 5. Long strip mounting base; 6. Scraper; 7. Round hole; 8. Locking pin assembly; 9. U-shaped seat; 10. Pin rod; 11. First spring; 12. Limiting rod; 13. Pull rod; 14. Second spring; 15. Push rod; 16. Telescopic rod assembly; 17. Stirring blade. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0022] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0024] like Figure 1-5As shown, a single-shaft feed preparation machine includes a stirring shaft 2 rotatably disposed inside a housing 1. Stirring blades 17 are arranged in an axial array on the stirring shaft 2. Two sets of vertically formed fixing grooves 3 are symmetrically arranged at both ends of the stirring shaft 2. Telescopic rod assemblies 16 are inserted into the fixing grooves 3. A long mounting base 5 is fixedly disposed at the upper end of each of the two telescopic rod assemblies 16. A scraper 6 of matching length is fixedly disposed at the upper end of the long mounting base 5. The outer end of the scraper 6 is elastic, and the scraper 6 is located between the stirring blades 17 and the wall of the housing 1. When the scraper 6 moves to the bottom of the hopper, it can scoop up the feed accumulated at the bottom of the hopper. A locking pin assembly 8 for fixing the telescopic rod assembly 16 is provided on the stirring shaft 2.

[0025] In this embodiment, the telescopic rod assembly 16, the long strip mounting base 5, and the scraper 6 are fixed to the stirring shaft 2 by opening a fixing groove 3 and a locking pin assembly 8 on the stirring shaft 2 and rotating with the stirring shaft 2. The scraper 6 is in continuous contact with the bin wall. When the scraper 6 moves to the bottom of the stirring blade 17, it can scoop up the feed accumulated at the bottom of the bin and rotate it directly to the top of the stirring blade 17 for mixing. This solves the problem that the traditional stirring blade 17 is not strong enough to lift and mix the material accumulated at the bottom of the bin. At the same time, the locking pin assembly 8 can quickly remove and replace the telescopic rod assembly 16, the long strip mounting base 5, and the scraper 6, maintaining the contact effect between the end of the scraper 6 and the bin wall, thereby maintaining the scooping effect of the feed accumulated at the bottom of the bin. With the telescopic rod assembly 16, when the scraper 6 passes through the gap between the stirring blade 17 and the bottom of the bin, the length of the telescopic rod assembly 16 can be automatically adjusted to adapt to the change in the distance between the stirring shaft 2 and the bottom of the bin.

[0026] like Figure 4 As shown, the locking pin assembly 8 includes a U-shaped seat 9 fixedly mounted on the stirring shaft 2. The two side plates of the U-shaped seat 9 are symmetrically provided with through holes. A pin 10 is inserted between the two through holes. A first spring 11 is coaxially sleeved on the pin 10. A limiting rod 12 is provided on the pin 10 to limit the first spring 11. A circular hole 7 is provided on the telescopic rod at a position corresponding to the pin 10. The pin 10 is inserted into the circular hole 7 to fix the telescopic rod.

[0027] In this embodiment, the U-shaped seat 9 supports the pin 10, and the first spring 11 can keep the pin 10 pushing forward and keep it stable in the round hole 7 on the sleeve 4.

[0028] like Figure 5 As shown, the telescopic rod includes a sleeve 4, and a push rod 15 is slidably disposed inside the sleeve 4. A second spring 14 is fixedly disposed at the bottom of the push rod 15, and the bottom of the second spring 14 is fixedly connected to the bottom of the inner cavity of the sleeve 4.

[0029] In this embodiment, by setting a second spring 14, when the scraper and the long strip mounting base 5 are compressed, the second spring 14 provides a certain amount of expansion and contraction space for the scraper and the long strip mounting base 5, preventing the bin wall from excessively squeezing the scraper and causing damage.

[0030] like Figure 5 As shown, a pull rod 13 is fixedly installed at the end of the pin 10 away from the telescopic rod.

[0031] In this embodiment, after the accumulated feed has been cleaned up, the pin 10 can be moved backward by pulling the lever 13, and the front end of the pin 10 can be pulled out from the round hole 7, no longer limiting the telescopic rod assembly 16. At this time, the telescopic rod assembly 16, the long strip mounting base 5 and the scraper 6 can be taken out directly to avoid affecting the normal operation of the preparation machine.

[0032] like Figure 2 As shown, the scraper 6 consists of two parts, including a metal frame fixed to the long strip mounting base 5 and a rubber strip vulcanized onto the frame.

[0033] In this embodiment, by using a rubber strip material, hard friction on the bin wall can be avoided. At the same time, when encountering hard impurities, the soft rubber strip can deform and cross over the hard impurities to prevent the stirring shaft 2 from overloading and jamming.

[0034] Working principle: When shoveling up and mixing the feed accumulated at the bottom of the casing 1, the stirring shaft 2 is first rotated so that the fixing grooves 3 at both ends face upwards. Then, a tubular tool is used to pull the pin 10 backwards by fitting it onto the pull rod 13. Next, the bottoms of the two telescopic rod assemblies 16 at the bottom of the long strip mounting base 5 are each inserted into a fixing groove 3. By releasing the pull rod 13, the first spring 11 pushes the limiting rod 12 on the pin 10 forward, causing the pin 10 to move forward until it is inserted into the round hole 7 on the telescopic rod assembly 16, thus fixing the telescopic rod assembly 16, thereby fixing the long strip mounting base 5 and the scraper 6. The stirring shaft 2 is started to rotate, which drives the scraper 6 to move. The telescopic rod assembly keeps the end of the scraper 6 in contact with the bin wall. When the scraper 6 moves to the bottom of the stirring blade 17, it can scoop up the feed accumulated at the bottom of the bin and rotate it directly to the top of the stirring blade 17 for mixing. This solves the problem that the traditional stirring blade 17 is not strong enough to lift and mix the material accumulated at the bottom of the bin. At the same time, the telescopic rod assembly 16, the long strip mounting base 5 and the scraper 6 can be quickly removed and replaced through the locking pin assembly 8 to maintain the contact effect between the end of the scraper 6 and the bin wall, thereby maintaining the scooping effect of the feed accumulated at the bottom of the bin.

[0035] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0037] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A single-shaft feed preparation machine comprising a housing (1) inside which a stirring shaft (2) is arranged to rotate, said stirring shaft (2) being provided with stirring paddles (17) arranged in an axial array, characterized in that, The stirring shaft (2) has two sets of vertically opened fixing grooves (3) symmetrically arranged at both ends. Telescopic rod assemblies (16) are inserted into the fixing grooves (3). A long strip mounting seat (5) is fixedly arranged at the upper end of the two telescopic rod assemblies (16). A scraper (6) matching its length is fixedly arranged at the upper end of the long strip mounting seat (5). The outer end of the scraper (6) is elastic, and the scraper (6) is located between the stirring blade (17) and the wall of the casing (1). When the scraper (6) moves to the bottom of the bin, it can scoop up the feed accumulated at the bottom of the bin. The stirring shaft (2) is provided with a locking pin assembly (8) for fixing the telescopic rod assembly (16).

2. A single shaft feed preparation machine according to claim 1, characterized in that, The locking pin assembly (8) includes a U-shaped seat (9) fixedly mounted on the stirring shaft (2). The two side plates of the U-shaped seat (9) are symmetrically provided with through holes. A pin (10) is inserted between the two through holes. A first spring (11) is coaxially sleeved on the pin (10). A limiting rod (12) for limiting the first spring (11) is provided on the pin (10). A circular hole (7) is provided on the telescopic rod at a position corresponding to the pin (10). The pin (10) is inserted into the circular hole (7) to fix the telescopic rod.

3. A single shaft feed preparation machine according to claim 1, wherein, The telescopic rod assembly (16) includes a sleeve (4), and a push rod (15) is slidably disposed inside the sleeve (4). A second spring (14) is fixedly disposed at the bottom of the push rod (15), and the bottom of the second spring (14) is fixedly connected to the bottom of the inner cavity of the sleeve (4).

4. A single shaft feed preparation machine according to claim 2, wherein, A pull rod (13) is fixedly installed at the end of the pin (10) away from the telescopic rod.

5. A single shaft feed preparation machine according to claim 1, wherein, The scraper (6) consists of two parts, including a metal frame fixed to the long strip mounting base (5) and a rubber strip vulcanized onto the frame.

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