Air-blowing type unloader and anti-caking type weighing material box

Abstract

The invention discloses an air-blowing type discharger and an anti-caking type weighing feed box, and belongs to the technical field of feed discharging and storage in the breeding industry. The air-blowing type discharger comprises a vertically-arranged feed uniformizing box, and the right lower portion of the feed uniformizing box communicates with a discharging box; the bottom of the discharging box communicates with a transversely-arranged material conveying pipe, and an air pump is installed at the right end of the material conveying pipe. A feeder with a Venturi structure is also coaxially butted on the conveying pipe; the feeder comprises a feeding pipe which is transversely arranged, and a throat pipe and a contraction pipe are connected to a discharge port of the feeding pipe; and the air inlet of the feeding pipe is connected with a flow guide pipe. After the feed uniformly falls down through the impeller, the feed falls into the feed inlet of the feeder, air flow generated by the air pump is accelerated by the flow guide pipe, enters the shrinkage pipe to be further compressed and then is sprayed out through the throat pipe, the high-speed air flow generated by the Venturi effect is utilized to blow the feed below into the feed conveying pipe instead of freely falling, and therefore the feed is prevented from adhering to the pipe wall or being broken, and the service life of the feed is prolonged. And the conveying distance of the conveying pipe can be further increased.

Description

Technical Field

[0001] This invention relates to the field of feed unloading and storage technology in the aquaculture industry, specifically to an air-blowing unloader and an anti-caking weighing bin. Background Technology

[0002] In the livestock industry, feed is typically stored in feed hoppers and then conveyed to the feeding line via a discharge device at the bottom of the hopper. Existing discharge devices and weighing hoppers generally suffer from the following problems: Problems with traditional feeders: 1. When feed falls from the feeder, it is easily stuck to the bottom wall of the conveying pipe due to gravity, making it difficult to clean. 2. The moment the feed hits the bottom of the conveying pipe, the breakage rate of the feed increases, which in turn affects the quality of the feed. Problems with traditional weighing bins: 1. The unloader and the conveying pipe are rigidly connected, so the bin cannot move up and down when feeding and unloading, resulting in large weighing errors of the weighing sensor; 2. Most bins are vertical, so the feed is under great pressure at the bottom of the bin, which makes it easy to clump together, thus affecting unloading efficiency. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide an air-blowing unloader. By installing a feeder with a venturi structure inside the feed pipe, the feeder can increase the flow velocity at the bottom of the feed box by means of the venturi structure. After the feed falls, it is blown by the high-speed airflow and hardly hits the bottom of the feed pipe, thus solving the problems of feed sticking and high breakage rate of traditional unloaders.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A pneumatic unloader includes a vertically arranged material distribution box, a horizontally arranged impeller rotatably mounted inside the material distribution box, and a motor for driving the impeller to rotate installed outside the material distribution box; a discharge box is connected directly below the material distribution box. Its core improvement lies in the following: the bottom of the feeding box is connected to a horizontally arranged conveying pipe, and an air pump is installed at the right end of the conveying pipe; a feeder with a venturi structure is also coaxially connected to the conveying pipe. The feeder includes a horizontally arranged feeding pipe. The top of the feeding pipe has a feeding port that communicates with the feeding box, the right end of the feeding pipe has an air inlet that communicates with the conveying pipe, and the left end of the feeding pipe has a discharge port that communicates with the conveying pipe. A throat pipe is connected to the outlet, which is coaxially arranged with the feeding pipe. A shrink tube is coaxially connected between the throat pipe and the feeding pipe. The diameter of the shrink tube gradually decreases from the feeding pipe to the throat pipe. A guide pipe is connected to the air inlet and is coaxially arranged with the feeding pipe. The diameter of the guide pipe gradually decreases from the location of the air pump to the location of the feeding pipe.

[0005] By adopting the above scheme, after the feed falls evenly through the impeller, it falls into the feed inlet of the feeder. The airflow generated by the air pump is accelerated through the guide pipe, enters the contraction pipe for further compression, and then is ejected through the throat pipe. The high-speed airflow generated by the Venturi effect "blows" the feed below into the conveying pipe instead of letting it fall freely, thereby avoiding the feed from sticking to the pipe wall or breaking, and further increasing the conveying distance of the conveying pipe.

[0006] As a preferred embodiment of the air-blowing unloader, the impeller is a polyurethane impeller, which is more wear-resistant and prevents material sticking, thus reducing the breakage rate and material sticking of feed in the feeding box.

[0007] The second technical problem to be solved by the present invention is to provide an anti-caking weighing bin that eliminates the hard connection between the unloader and the conveying pipe, so that the weighing bin can move up and down during feeding and unloading, and the weighing sensor is more accurate in weighing, thus solving the problem of large weighing error in traditional weighing bins.

[0008] To achieve the above objectives, the present invention provides the following technical solution: An anti-caking weighing bin includes a vertically arranged bin with a hinged top cover that can be opened or closed by flipping. Support legs are connected to the four corners of the bottom of the bin, and a weighing sensor located on the same horizontal plane is installed at the bottom of each support leg. An air-blowing unloader is connected to the bottom center of the vertical hopper; Its core improvement lies in the fact that the discharge box in the air-blowing unloader is a soft box or a corrugated box.

[0009] By adopting the above solution, the feeding box is designed as a soft box or a corrugated box. The soft box is made of soft materials such as rubber, and the corrugated box is made of lightweight materials such as PVC. This allows the weighing box to be "separated" from the conveying pipe. In this way, the material in the weighing box can move up and down on the weighing sensor when feeding and unloading, making the weighing sensor more accurate when weighing.

[0010] The third technical problem to be solved by the present invention is to provide an anti-caking weighing bin, which adds a rotating stirring structure to stir the feed at the bottom of the vertical bin, thereby increasing feed flowability, improving unloading efficiency, and solving the problem of feed clumping at the bottom of traditional weighing bins.

[0011] To achieve the above objectives, the present invention provides the following technical solution: Based on the above scheme, a horizontally arranged agitator structure is rotatably installed inside the vertical material box and close to the location of the air-blowing unloader. The agitator structure extends to the outside of the vertical material box and is driven to rotate by a drive assembly installed outside the vertical material box. The mixing structure includes a horizontally arranged mixing shaft and multiple mixing blades that are circumferentially and simultaneously axially arrayed and connected to the mixing shaft.

[0012] By adopting the above solution, the drive assembly drives the stirring shaft to rotate, which in turn drives the stirring blades to rotate and stir the feed at the bottom of the vertical feed box, thereby increasing the feed flowability and improving the unloading efficiency.

[0013] As a preferred embodiment of an anti-caking weighing bin, in order to reduce the breakage rate of feed during the mixing process, each mixing blade is bent in a clockwise or counterclockwise direction. When all the agitator blades bend clockwise, the drive assembly drives the agitator structure to rotate counterclockwise. When all the mixing blades bend counterclockwise, the drive assembly drives the mixing structure to rotate clockwise.

[0014] As a preferred embodiment of the anti-caking weighing bin, in order to further reduce the breakage rate of feed during the mixing process, each mixing blade is a curved surface that bends from the edge to the middle at the same time. This curved surface makes the surface of the mixing blade form a convex surface on one side and a concave surface on the other side. When the mixing structure is driven to rotate by the drive assembly, all the mixing blades rotate from their convex side to their concave side, that is, the convex side contacts the feed first, further breaking up the clumps without significantly crushing the feed.

[0015] As a preferred embodiment of an anti-caking weighing bin, the bottom of the vertical bin is a conical bottom with a shrinking structure. The mixing structure is located inside the conical bottom, and the length of the mixing blades gradually decreases from the middle to both ends to fit the conical structure, making the mixing more uniform.

[0016] As a preferred embodiment of an anti-caking weighing bin, the drive assembly includes a drive sprocket coaxially connected to the impeller, and a driven sprocket coaxially connected to one end of the agitation shaft. The drive sprockets are connected to each other via chain drive to drive the agitation blades. Moreover, the drive assembly and the uniform feed box share a motor, which can reduce energy consumption. The diameter of the drive sprocket is smaller than that of the driven sprocket, which reduces the speed and increases the torque of the agitation blades.

[0017] The beneficial effects of this invention are: 1. Avoid feed sticking and breakage during conveying: After the feed falls evenly through the impeller, it falls into the feed inlet of the feeder. The airflow generated by the air pump is accelerated through the guide pipe, further compressed in the constriction pipe, and then ejected through the throat pipe. The high-speed airflow generated by the Venturi effect "blows" the feed below into the conveying pipe instead of letting it fall freely, thereby avoiding feed sticking to the pipe wall or breaking, and further increasing the conveying distance of the conveying pipe. 2. Avoid feed sticking and breakage during feeding: The impeller is made of polyurethane, which is more wear-resistant and prevents feed sticking, reducing the breakage rate and sticking of feed in the feeding box. 3. Improve weighing accuracy: Design the feeding box as a soft box or a corrugated box. The soft box is made of soft materials such as rubber, and the corrugated box is made of lightweight materials such as PVC. This allows the weighing box to be "separated" from the conveying pipe. This allows the material to move up and down on the weighing sensor when feeding and unloading, making the weighing sensor more accurate. 4. Prevent feed from clumping in the feed hopper: The drive assembly drives the stirring shaft to rotate, which in turn drives the stirring blades to rotate and stir the feed at the bottom of the vertical feed hopper, increasing feed flowability and improving unloading efficiency. 5. Prevent feed breakage during agitation: The agitator blades are specially curved to reduce the impact between the blades and the feed during agitation, which can significantly reduce the feed breakage rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of an air-blowing unloader; Figure 2 Internal structure of the air-blowing unloader Figure 1 ; Figure 3 Internal structure of the air-blowing unloader Figure 2 ; Figure 4 This is a three-dimensional structural diagram of the anti-caking weighing bin in Example 1; Figure 5 This is an internal structural diagram of the anti-caking weighing bin in Example 1; Figure 6 This is a three-dimensional structural diagram of the anti-caking weighing bin in Example 2; Figure 7 This is a diagram showing the internal structure of the anti-caking weighing bin in Example 2; Figure 8 This is a three-dimensional structural diagram of the mixing structure.

[0020] The markings in the diagram are: 1-Packaging box; 2-Impeller; 3-Motor; 4-Discharge box; 5-Conveying pipe; 6-Air pump; 7-Feeder; 71-Feeding pipe; 72-Throat; 73-Contraction pipe; 74-Guide pipe; 8-Vertical hopper; 9-Cover; 10-Support leg; 11-Weighing sensor; 12-Agitating structure; 121-Agitating shaft; 122-Agitating blades; 13-Drive sprocket; 14-Driven sprocket; 15-Chain. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, as Figures 1 to 3 As shown, an air-blowing unloader is provided for unloading feed such as bait. Specifically, it includes a vertically arranged feeding box 1, a horizontally arranged impeller 2 rotatably installed inside the feeding box 1, and a motor 3 that drives the impeller 2 to rotate outside the feeding box 1; a discharge box 4 is connected to the bottom of the feeding box 1 by bolts and nuts.

[0023] like Figures 1 to 2 As shown, the bottom of the feeding box 4 is connected to a horizontally arranged conveying pipe 5, and an air pump 6 is installed at the right end of the conveying pipe 5; a feeder 7 with a venturi structure is also coaxially connected to the conveying pipe 5.

[0024] Continue as Figures 1 to 2 As shown, the feeder 7 includes a horizontally arranged feed pipe 71. The top of the feed pipe 71 has a feed inlet communicating with the feed box 4. The right end of the feed pipe 71 has an air inlet communicating with the conveying pipe 5. The left end of the feed pipe 71 has a discharge outlet communicating with the conveying pipe 5. A throat pipe 72 coaxially arranged with the feed pipe 71 is welded at the discharge outlet. A shrinkage pipe 73 is coaxially welded between the throat pipe 72 and the feed pipe 71. The diameter of the shrinkage pipe 73 gradually decreases from the location of the feed pipe 71 to the location of the throat pipe 72. A guide pipe 74 coaxially arranged with the feed pipe 71 is welded at the air inlet. The diameter of the guide pipe 74 gradually decreases from the location of the air pump 6 to the location of the feed pipe 71.

[0025] like Figure 3 As shown, impeller 2 is a polyurethane impeller 2, which is more wear-resistant and prevents material from sticking, reducing the breakage rate and material sticking of feed in the feeding box 1.

[0026] The working principle of the air-blowing unloader: The impeller 2 is driven by the motor 3 to rotate, which pushes the feed in the feed distribution box 1 into the feed box 4 at a uniform speed. Then the feed falls into the feed inlet of the feeder 7. The airflow generated by the air pump 6 is accelerated through the guide pipe 74, enters the contraction pipe 73 for further compression, and is then ejected through the throat pipe 72. The high-speed airflow generated by the Venturi effect "blows" the feed below into the conveying pipe 5 instead of letting it fall freely, thereby avoiding the feed from sticking to the pipe wall or breaking, and further increasing the conveying distance of the conveying pipe 5.

[0027] like Figures 4 to 5 As shown, an anti-caking weighing bin is used for storing feed such as bait. Specifically, it includes a vertically arranged vertical bin 8, with a hinged top cover 9 that can be flipped open or closed, and support legs 10 welded to the four corners of the bottom of the vertical bin 8. Each support leg 10 has a weighing sensor 11 installed at the bottom of the same horizontal plane; an air-blowing unloader is connected to the middle of the bottom of the vertical bin 8 by bolts and nuts.

[0028] like Figures 1 to 5 As shown, the discharge box 4 in the air-blowing unloader is a soft material box, which is made of soft materials such as rubber; in addition, the discharge box 4 can also be a corrugated material box, which is made of lightweight materials such as PVC.

[0029] The working principle of the anti-caking weighing bin in Example 1: The feeding bin 4 is designed as a soft bin or a corrugated bin. The soft bin is made of soft materials such as rubber, and the corrugated bin is made of lightweight materials such as PVC. This allows the weighing bin to be "separated" from the conveying pipe 5. When feeding and unloading materials into the weighing bin, the materials can move up and down on the weighing sensor 11, making the weighing sensor 11 more accurate when weighing.

[0030] Example 2, as Figures 6 to 8 As shown, the difference between this embodiment and embodiment one is that, based on embodiment one, a horizontally arranged stirring structure 12 is rotatably installed inside the vertical material box 8 and close to the location of the air-blowing unloader. The stirring structure 12 extends to the outside of the vertical material box 8 and is driven to rotate by a drive assembly installed outside the vertical material box 8.

[0031] like Figure 8 As shown, the mixing structure 12 includes a horizontally arranged mixing shaft 121 and multiple circumferentially arranged mixing blades 122 welded to the mixing shaft 121 in an axial array. The mixing shaft 121 is driven to rotate by the drive assembly, which in turn drives the mixing blades 122 to rotate and agitate the feed at the bottom of the vertical feed box 8, thereby increasing the feed flowability and improving the unloading efficiency.

[0032] Continue as Figure 8As shown, in order to reduce the breakage rate of feed during the mixing process, each mixing blade 122 is bent in a clockwise or counterclockwise direction; When all the agitator blades 122 bend clockwise, the drive assembly drives the agitator structure 12 to rotate counterclockwise. When all the mixing blades 122 bend counterclockwise, the drive assembly drives the mixing structure 12 to rotate clockwise.

[0033] Continue as Figure 8 As shown, in order to further reduce the feed breakage rate during the mixing process, each mixing blade 122 is a curved surface that bends from the edge to the middle at the same time. This curved surface makes the surface of the mixing blade 122 convex on one side and concave on the other side. When the mixing structure 12 is driven to rotate by the drive assembly, all the mixing blades 122 rotate from their convex side to their concave side, that is, the convex side contacts the feed first, further breaking up the clumps without significantly crushing the feed.

[0034] like Figures 6 to 7 As shown, the bottom of the vertical material box 8 is a conical bottom that contracts. The mixing structure 12 is located inside the conical bottom. The length of the mixing blades 122 gradually decreases from the middle to both ends to fit the conical structure, making the mixing more uniform.

[0035] Continue as Figures 6 to 7 As shown, the drive assembly includes a drive sprocket 13 coaxially connected to the impeller 2, and a driven sprocket 14 coaxially connected to one end of the stirring shaft 121. The drive sprocket 13 and the driven sprocket 14 are connected by a chain 15 to drive the stirring blades 122. Moreover, the drive assembly and the uniform feed box 1 share a motor 3, which can reduce energy consumption. The diameter of the drive sprocket 13 is smaller than the diameter of the driven sprocket 14, which can reduce the speed and increase the torque of the stirring blades 122.

[0036] The working principle of the anti-caking weighing bin in Example 2: The feed at the bottom of the vertical bin 8 is prone to clumping due to gravity. The motor 3 in the drive assembly drives the drive sprocket 13 to rotate, which drives the driven sprocket 14 and the stirring structure 12 to rotate through the chain 15. The unidirectional curved blades, in coordination with the rotation direction (such as clockwise curved blades rotating counterclockwise), loosen the clumped feed at the bottom. When the convex and concave surfaces of the curved blades rotate, they push the feed to flow from the convex to the concave surface, further breaking up the clumping without significantly breaking the feed. This increases the feed flowability and improves the unloading efficiency.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air-blowing unloader, comprising a vertically arranged uniform material box (1), wherein a horizontally arranged impeller (2) is rotatably installed inside the uniform material box (1), and a motor (3) for driving the impeller (2) to rotate is installed outside the uniform material box (1); a discharge box (4) is connected directly below the uniform material box (1); Its features are: The bottom of the feeding box (4) is connected to a horizontally arranged conveying pipe (5), and an air pump (6) is installed at the right end of the conveying pipe (5); a feeder (7) with a venturi structure is also coaxially connected to the conveying pipe (5). The feeder (7) includes a feed pipe (71) arranged horizontally. The top of the feed pipe (71) is provided with a feed inlet that communicates with the feed box (4). The right end of the feed pipe (71) is provided with an air inlet that communicates with the conveying pipe (5). The left end of the feed pipe (71) is provided with a discharge port that communicates with the conveying pipe (5). The outlet is connected to a throat (72) coaxially arranged with the feeding pipe (71). A shrink tube (73) is coaxially connected between the throat (72) and the feeding pipe (71). The diameter of the shrink tube (73) gradually decreases from the feeding pipe (71) to the throat (72). The air inlet is connected to a guide pipe (74) that is coaxially arranged with the feeding pipe (71). The diameter of the guide pipe (74) gradually decreases from the location of the air pump (6) to the location of the feeding pipe (71).

2. The air-blowing unloader according to claim 1, characterized in that: The impeller (2) is a polyurethane impeller.

3. An anti-caking weighing bin, comprising a vertically arranged vertical bin (8), the top of the vertical bin (8) is hinged with a flip-open or closeable bin cover (9), and the bottom of the vertical bin (8) is connected to four support legs (10), and each support leg (10) is equipped with a weighing sensor (11) located on the same horizontal plane at the bottom. The vertical hopper (8) is connected to the middle of its bottom with an air-blowing unloader as described in claim 1. Its features are: The discharge box (4) in the air-blowing unloader is a soft box or a corrugated box.

4. The anti-caking weighing bin according to claim 3, characterized in that: The vertical hopper (8) is rotatably mounted inside a horizontally arranged agitator (12) located near the air-blowing unloader. The agitator (12) extends out of the vertical hopper (8) and is driven to rotate by a drive assembly mounted outside the vertical hopper (8).

5. The anti-caking weighing bin according to claim 4, characterized in that: The mixing structure (12) includes a mixing shaft (121) arranged laterally and a plurality of mixing blades (122) connected to the mixing shaft (121) in a circumferential and axial array.

6. The anti-caking weighing bin according to claim 5, characterized in that: Each mixing blade (122) is bent in a clockwise or counterclockwise direction; When all the mixing blades (122) bend clockwise, the drive assembly drives the mixing structure (12) to rotate counterclockwise; When all the stirring blades (122) bend counterclockwise, the drive assembly drives the stirring structure (12) to rotate clockwise.

7. The anti-caking weighing bin according to claim 5, characterized in that: Each mixing blade (122) is a curved surface that curves simultaneously from the edge to the center, such that the surface of the mixing blade (122) forms a convex surface on one side and a concave surface on the other. When the mixing structure (12) is driven to rotate by the drive assembly, all the mixing blades (122) rotate from their convex surfaces to their concave surfaces.

8. The anti-caking weighing bin according to claim 5, characterized in that: The bottom of the vertical material box (8) is a tapered conical bottom, the stirring structure (12) is located inside the conical bottom, and the length of the stirring blade (122) gradually decreases from the middle to both ends.

9. The anti-caking weighing bin according to claim 5, characterized in that: The drive assembly includes a drive sprocket (13) coaxially connected to the impeller (2), and a driven sprocket (14) coaxially connected to one end of the stirring shaft (121). The drive sprocket (13) and the drive sprocket (14) are connected by a chain (15).

10. The anti-caking weighing bin according to claim 9, characterized in that: The diameter of the driving sprocket (13) is smaller than the diameter of the driven sprocket (14).

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