Stirring mechanism of livestock and poultry waste fermentation tank

Abstract

The utility model belongs to the technical field of fermentation tanks, and particularly relates to a stirring mechanism of a livestock and poultry waste fermentation tank, which comprises a stirring shaft and a motor for driving the stirring shaft to rotate, a stirring blade is arranged on the stirring shaft, and the stirring blade rotates by the aid of the stirring shaft and stirs fermentation materials in the fermentation tank. A telescopic cylinder is further arranged on the fermentation tank, the fixed end of the telescopic cylinder is fixedly connected with the top of the fermentation tank, the telescopic end of the telescopic cylinder is fixedly connected with the rack, the stirring shaft is rotationally connected with the rack through a bearing, and the stirring shaft has the freedom degree of lifting in the vertical direction through the telescopic cylinder. According to the utility model, the telescopic cylinder is additionally arranged, so that the stirring blades form step-by-step rising type stirring in the fermentation tank, and solid fermentation materials at the bottom gradually rise, so that the fermentation materials are uniformly distributed, the fermentation reaction is promoted, and the fermentation quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fermentation tanks, and particularly relates to a stirring mechanism for a livestock and poultry waste fermentation tank. Background Art

[0002] In the process of livestock and poultry breeding, a large amount of fecal waste will be generated. At present, when treating fecal waste, a fermentation tank is usually used to ferment it to form high-quality organic fertilizer. During the fermentation process, in order to make the fermented matter evenly distributed, the fermented matter needs to be stirred by the rotation of stirring blades frequently.

[0003] However, the stirring blades in the current fermentation tank can only rotate along the horizontal plane, and the fermented matter in the fermentation tank is a solid-liquid mixture. After a period of precipitation, the solid fermented matter will sink to the bottom, and the liquid fermented matter will float on the top, resulting in a large density of the fermented matter at the bottom. After being stirred by the stirring blades that only rotate along the horizontal plane, only a small part of the solid fermented matter at the bottom will float up, and most of the solid fermented matter still stays at the bottom of the tank, unable to make the fermented matter in the fermentation tank evenly distributed, thus affecting the progress of the fermentation reaction and delaying the fermentation efficiency. Content of the Utility Model

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a stirring mechanism for a livestock and poultry waste fermentation tank. By adding a telescopic cylinder, the stirring blades form a step-by-step ascending stirring in the fermentation tank, so that the solid fermented matter at the bottom gradually rises, thereby realizing the even distribution of the fermented matter, promoting the progress of the fermentation reaction, and improving the fermentation quality.

[0005] The specific technical solution adopted by the utility model is as follows:

[0006] A stirring mechanism for a livestock and poultry waste fermentation tank includes a stirring shaft and a motor for driving the stirring shaft to rotate. Stirring blades are arranged on the stirring shaft, and the stirring blades form rotation through the stirring shaft and stir the fermentation material in the fermentation tank. A telescopic cylinder is further arranged on the fermentation tank. The fixed end of the telescopic cylinder is fixedly connected to the top of the fermentation tank, and the telescopic end of the telescopic cylinder is fixedly connected to the frame. The stirring shaft is rotationally connected to the frame through a bearing, and the stirring shaft has the freedom to move up and down in the vertical direction by means of the telescopic cylinder.

[0007] The stirring blades are in a sheet structure, and multiple groups of stirring blades are arranged at intervals along the axial direction of the stirring shaft. The length of the stirring blade at the central part is greater than the lengths of the first-stage stirring blade and the last-stage stirring blade and shows a gradually decreasing trend.

[0008] A flow guide vane with an arc-shaped strip structure is additionally provided on the stirring shaft. The stirring blades are arranged in a spiral shape centered on the stirring shaft. The concave surface of the flow guide vane is fixedly connected to the end of the stirring blade. The flow guide vane is arranged obliquely by means of multiple groups of stirring blades arranged in a spiral shape. The concave surface of the flow guide vane forms a groove-shaped flow guide groove, and the orientation of the flow guide groove is the same as the rotation direction of the stirring shaft.

[0009] The frame has a cylindrical cavity structure. A channel for the output end of the motor and the stirring shaft to pass through is provided in the center of the frame. The top of the frame is connected to the fixed end of the motor. A ring-shaped sliding groove is provided at the bottom of the frame, and the bearing is located in the sliding groove and forms a rotational fit with the stirring shaft.

[0010] Multiple groups of vertical guide columns are provided on the fermentation tank on the periphery of the frame. Multiple groups of sliders are also provided on the periphery of the frame. The sliders are sleeved on the guide columns and form a sliding fit. The telescopic end of the telescopic cylinder abuts against the bottom of the slider and drives the frame to form a lifting and sliding along the guide columns.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. The present utility model enables the stirring blades to form a gradually ascending stirring in the fermentation tank through the telescopic cylinder, so that the solid fermentation materials at the bottom are also gradually lifted and floated under the drive of the ascending stirring blades. As the density of the lower-layer fermentation materials decreases, the upper-layer liquid fermentation materials will gradually penetrate downward, thereby realizing the uniform distribution of the fermentation materials, promoting the fermentation reaction, and improving the fermentation quality.

[0013] 2. The present utility model is additionally provided with a flow guide vane with an arc-shaped strip structure at the end of the stirring blade. During the stirring process of the stirring shaft, the fixed fermentation materials at the bottom of the fermentation tank will quickly rise to the upper part of the fermentation tank along the flow guide groove and diffuse, thereby realizing the vertical mixing of the fermentation materials, achieving the uniform distribution of the fermentation materials in a short time, and improving the stirring efficiency and fermentation quality. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the stirring mechanism in Specific Embodiment 1;

[0015] Figure 2 It is Figure 1 The enlarged structural diagram of part A in

[0016] Figure 3 It is a schematic structural diagram of the stirring mechanism in Specific Embodiment 2;

[0017] Figure 4 It is a schematic internal top view structure diagram of Specific Embodiment 2;

[0018] Figure 5 It is a schematic horizontal cross-sectional view of the flow guide vane;

[0019] In the attached drawings, 1 is the stirring shaft, 2 is the motor, 3 is the stirring blade, 4 is the fermentation tank, 5 is the telescopic cylinder, 6 is the frame, 7 is the bearing, 8 is the guide vane, 9 is the guide groove, 10 is the sliding groove, 11 is the guide post, and 12 is the slider. Specific embodiments

[0020] The present invention will be further described below in conjunction with the attached drawings and specific embodiments:

[0021] Specific embodiment 1, as Figure 1-2 shown, this specific embodiment provides a stirring mechanism for a livestock and poultry waste fermentation tank 4, including a stirring shaft 1 and a motor 2 for driving the rotation of the stirring shaft 1. Stirring blades 3 are arranged on the stirring shaft 1, and the stirring blades 3 stir the fermentation material in the chamber of the fermentation tank 4 by means of the rotation of the stirring shaft 1. A telescopic cylinder 5 is further arranged on the fermentation tank 4. The fixed end of the telescopic cylinder 5 is fixedly connected to the top of the fermentation tank 4, and the telescopic end of the telescopic cylinder 5 is fixedly connected to the frame 6. The stirring shaft 1 is rotatably connected to the frame 6 by means of a bearing 7, and the stirring shaft 1 has the freedom to move up and down in the vertical direction by means of the telescopic cylinder 5.

[0022] Since the fecal waste fermentation product is a solid-liquid mixture, after a period of precipitation, the solid fermentation product will sink to the bottom, and the liquid fermentation product will float on the top, resulting in a large density of the bottom fermentation product. At present, the stirring mechanism of the fermentation tank 4 can only achieve horizontal stirring. After stirring, only a small part of the fixed body fermentation product at the bottom will float up, and most of the solid fermentation product still remains at the bottom of the tank, unable to evenly distribute the fermentation product in the fermentation tank 4, thus affecting the progress of the fermentation reaction and delaying the fermentation efficiency.

[0023] Therefore, the present invention is additionally provided with a telescopic cylinder 5, which drives the stirring shaft 1 to move up and down. During use, first, the telescopic cylinder 5 is used to lower the stirring blades 3 to the bottom of the tank, and the stirring blades 3 start to rotate and stir. At this time, under the stirring action, the fermentation product at the bottom will rise a certain distance. Then, the stirring blades 3 stop rotating and drive the telescopic cylinder 5 to raise the stirring blades 3 a certain distance to continue stirring until the uppermost stirring blades 3 are close to the top of the tank. Since it takes a certain time for the fermentation product to sink to the bottom after being stirred and floated, the telescopic cylinder 5 is used to make the stirring blades 3 form a step-by-step upward stirring in the fermentation tank 4, so that the solid fermentation product at the bottom is also driven by the rising stirring blades 3 to rise and float step by step. As the density of the lower-layer fermentation product decreases, the upper-layer liquid fermentation product will gradually penetrate downward, thereby realizing the uniform distribution of the fermentation product, promoting the progress of the fermentation reaction, and improving the fermentation quality.

[0024] The stirring blades 3 are in a sheet-like structure, and are arranged in multiple groups at intervals along the axial direction of the stirring shaft 1. The length of the stirring blades 3 located in the center is greater than the length of the first-stage stirring blades 3 and the length of the last-stage stirring blades 3 and decreases step by step. One side of the blade surface of the stirring blade 3 is perpendicular to the horizontal plane in which the stirring blade 3 rotates, which can increase the stirring area and improve the stirring effect. The stirring blades 3 in the middle stage on the stirring shaft 1 are long, while the stirring blades 3 in the first and last stages are short. This is because the stirring blades 3 located in the middle are just near the solid-liquid separation point, so the length of the stirring blades 3 in this area is increased to increase the stirring effect between the solid fermentation product and the liquid fermentation product.

[0025] The frame 6 has a cylindrical structure, and the center of the frame 6 is provided with the output end of the power supply machine 2 and the channel through which the stirring shaft 1 passes. The top of the frame 6 is connected to the fixed end of the motor 2, and the bottom of the frame 6 is provided with an annular slide 10. The bearing 7 is located in the slide 10 and forms a rotational fit with the stirring shaft 1. The bearing 7 can enable the frame 6 and the stirring shaft 1 to rotate together. At the same time, since the top of the frame 6 is connected to the fixed end of the motor 2, and the output end of the motor 2 is connected to the stirring shaft 1 by means of a coupling, when the frame 6 is raised and lowered, the motor 2 and the stirring shaft 1 will also be raised and lowered synchronously.

[0026] The fermentation tank 4 is provided with multiple groups of guide columns 11 in the vertical direction on the side of the frame 6, and multiple groups of sliders 12 are also provided on the side of the frame 6. The sliders 12 are sleeved with the guide columns 11 to form a sliding fit. The telescopic end of the telescopic cylinder 5 abuts against the bottom of the slider 12 and drives the frame 6 to slide and rise along the guide columns 11. On the one hand, the guide columns 11 play a guiding role to ensure that the stirring shaft 1 is lifted and lowered in the vertical direction to avoid deviation during the lifting process. On the other hand, the motor 2 and the stirring shaft 1 will produce a certain amount of shaking during operation. The frame 6 can be limited by the cooperation of the guide columns 11 and the sliders 12, thereby hindering the shaking of the stirring mechanism.

[0027] Specific embodiment 2, as Figure 2-5As shown, the difference between Specific Embodiment 2 and Specific Embodiment 1 is only that a flow guide vane 8 is additionally provided on the stirring shaft 1 in Specific Embodiment 2. The flow guide vane 8 in the shape of an arc-shaped strip is additionally provided on the stirring shaft 1. The stirring blades 3 are arranged in a spiral shape centered on the stirring shaft 1. The concave surface of the flow guide vane 8 is fixedly connected to the end of the stirring blade 3. The flow guide vane 8 is arranged obliquely by means of multiple groups of stirring blades 3 arranged in a spiral shape. The concave surface of the flow guide vane 8 forms a groove-shaped flow guide groove 9. The orientation of the flow guide groove 9 is the same as the rotation direction of the stirring shaft 1. Since the orientation of the flow guide groove 9 is the same as the rotation direction of the stirring shaft 1, during the stirring process of the stirring shaft 1, the fixed fermented matter at the bottom of the fermentation tank 4 will quickly rise along the flow guide groove 9 to the upper part of the fermentation tank 4 and diffuse, thereby realizing the up-and-down mixing of the fermented matter and achieving the uniform distribution of the fermented matter in a short time, improving the stirring efficiency and the fermentation quality.

Claims

1. A stirring mechanism for a livestock and poultry waste fermentation tank, comprising a stirring shaft (1) and a motor (2) for driving the stirring shaft (1) to rotate. Stirring blades (3) are arranged on the stirring shaft (1), and the stirring blades (3) rotate by means of the stirring shaft (1) to stir the fermentation material in the fermentation tank (4), characterized in that, A telescopic cylinder (5) is further provided on the fermentation tank (4). The fixed end of the telescopic cylinder (5) is fixedly connected to the top of the fermentation tank (4), and the telescopic end of the telescopic cylinder (5) is fixedly connected to the frame (6). The stirring shaft (1) is rotatably connected to the frame (6) by means of a bearing (7). The stirring shaft (1) has a degree of freedom to move up and down in the vertical direction by means of the telescopic cylinder (5). The stirring blade (3) has a sheet-like structure, and multiple groups of stirring blades (3) are arranged at intervals along the axial direction of the stirring shaft (1). The length of the stirring blade (3) located at the central part is greater than the lengths of the first-stage stirring blade (3) and the last-stage stirring blade (3) and shows a gradually decreasing trend. A flow guide vane (8) having an arc-shaped strip structure is additionally provided on the stirring shaft (1). The stirring blades (3) are arranged in a spiral shape with the stirring shaft (1) as the center. The concave surface of the flow guide vane (8) is fixedly connected to the end of the stirring blade (3). The flow guide vane (8) is arranged in an inclined shape by means of multiple groups of stirring blades (3) arranged in a spiral shape. The concave surface of the flow guide vane (8) forms a groove-shaped flow guide groove (9), and the orientation of the flow guide groove (9) is the same as the rotation direction of the stirring shaft (1).

2. The stirring mechanism of a fermentation tank for livestock and poultry waste according to claim 1, characterized in that, The frame (6) has a cylindrical cavity structure. A channel for the output end of the motor (2) and the stirring shaft (1) to pass through is provided in the center of the frame (6). The top of the frame (6) is connected to the fixed end of the motor (2). A ring-shaped sliding groove (10) is provided at the bottom of the frame (6). The bearing (7) is located in the sliding groove (10) and forms a rotational fit with the stirring shaft (1).

3. The stirring mechanism of a livestock and poultry waste fermentation tank according to claim 1, characterized in that Multiple groups of vertical guide columns (11) are provided on the fermentation tank (4) on the circumference side of the frame (6). Multiple groups of sliders (12) are also provided on the circumference side of the frame (6). The sliders (12) are sleeved on the guide columns (11) and form a sliding fit. The telescopic end of the telescopic cylinder (5) abuts against the bottom of the slider (12) and drives the frame (6) to slide up and down along the guide column (11).

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