A grain mixing device
By designing a grain mixing device with staggered bulges and multi-layer mixing rods, the problem that grain samples cannot be stirred evenly due to accumulation is solved, and the accuracy of uniform mixing of grain samples and quality inspection is achieved.
Patent Information
- Application Number
- CN202420758387.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In the existing grain sampling mixer, the grain samples cannot be stirred evenly due to thick accumulation, resulting in inaccurate quality inspection.
A grain mixing device is designed, including a mixing tank with an inlet, a mixing barrel and a rotating mixing shaft. The inner wall of the mixing barrel is provided with a plurality of staggered protrusions, and the grain samples enter through the inclined feed pipe. After being dispersed by the protrusions, the grain samples are ensured to be evenly mixed by the stirring of the first stirring rod and the second stirring rod group.
Through this device, the grain samples can reduce accumulation during premix and remix, achieve uniform stirring, and improve the accuracy of quality inspections.
Smart Images
Figure CN222694587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grain sampling and stirring, in particular to a grain stirring device. Background Art
[0002] Before grain enters the granary, it needs to be inspected to ensure that it meets relevant quality standards and requirements. By sampling, mixing evenly, and then inspecting the samples, the appearance, moisture content, impurity content and other indicators of the grain can be evaluated, and possible quality problems can be discovered and dealt with in a timely manner.
[0003] The existing means of grain sampling and inspection generally uses a sampler to take samples, and the grain samples extracted from multiple positions are uniformly placed in a container for stirring and mixing, and the stirring and mixing is generally performed by a stirrer. However, the existing feeding method is to directly put the grain from the feed port to the bottom surface of the stirrer. The grain samples put in multiple times fall on the same position of the bottom surface of the stirrer, which is easy to cause accumulation. There is no structure in the existing stirrer to disperse the grain samples. The grain samples cannot be stirred evenly due to the thick accumulation. Utility Model Content
[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a grain stirring device.
[0005] The technical solution of this utility model is as follows:
[0006] A grain stirring device comprises a stirring tank body with a feed inlet at the upper end, a mixing barrel and a rotatable stirring shaft are arranged in the stirring tank body, the stirring shaft is rotatably arranged in the stirring tank body along a vertical direction, the mixing barrel is arranged at the upper part of the stirring tank body and is connected to the feed inlet, the stirring shaft passes through the mixing barrel downward and extends to the bottom of the stirring tank body, the mixing barrel is rotatably connected to the stirring shaft, the mixing barrel has an inner bottom surface, the stirring shaft is provided with a first stirring rod located above the inner bottom surface, and a feeding port is provided at one side of the bottom of the mixing barrel;
[0007] A feed pipe is inserted into the feed port, and a lower end of the feed pipe is inclined toward the inner wall of the mixing barrel. The inner wall of the mixing barrel is provided with a plurality of staggered protrusions, and the lower end is located above the protrusions.
[0008] The grain sample is first dispersed by the protrusions on the inner wall of the mixing barrel from the feed inlet, and then stirred by the first stirring rod, and then falls from one side of the mixing barrel to the bottom of the stirring tank through the drop outlet, which can pre-mix the grain sample dispersed by the protrusions, thereby reducing the phenomenon of thick grain accumulation affecting uniform stirring. The first stirring rod of the utility model can fully stir the dispersed and re-mixed grain samples, thereby improving the mixing uniformity of grain samples contained in different times and different samplers.
[0009] In order to further improve the stirring and mixing effect of the grain sample, a second stirring rod group is also provided on the stirring shaft, and the second stirring rod group is arranged close to the bottom of the stirring tank body.
[0010] To prevent the grain sample flowing out of the lower port from falling directly into the bottom of the stirring tank from the feeding port and failing to be stirred by the first stirring rod, the vertical plane where the feeding port and the stirring shaft are located is set not to coincide with the vertical plane where the lower port and the stirring shaft are located.
[0011] Regarding the specific setting position of the lower port of the feed pipe, the intersection of the extension line of the lower part of the feed pipe and the inner wall of the mixing barrel is located above the highest position protrusion, so that the grains falling through the lower port can be scattered by the protrusion, preparing for the next step of uniform stirring by the first stirring rod.
[0012] The specific structure of the above-mentioned protrusion is that the protrusion is a hemispherical protrusion, and the surface of the protrusion is an arc surface, which can reduce the wear on the grain. If the radii of the protrusions set above and below are the same, the grain sample may be dispersed to both sides after contacting the protrusion at a higher position, and will not contact the protrusion of the same size below, thereby reducing the contact area between the grain sample and the protrusion. For this reason, the radius of the protrusion is set to increase from top to bottom to reduce the influence of the upper protrusion on the lower protrusion.
[0013] The shape of the feed pipe is an arc-shaped pipe or a bent pipe, and the feed pipe has an upper port and a lower port. The upper port is used for feeding and the lower port is used for discharging. Because the lower port needs to be inclined toward the inner wall of the mixing barrel, the lower port is set away from the stirring shaft and is set as an arc-shaped pipe or a bent pipe, so that the upper port and the lower port are both set away from the stirring shaft, which can increase the operating space when feeding at the upper port.
[0014] Existing grain sampling is generally done manually through a sampler. The sampler is a long structure. In order to facilitate the sampler to directly send the grain sample into the mixing tank through the upper port after sampling, the upper end of the feed pipe is arranged to pass through the mixing tank and extend upward at an angle, and a long feed groove with an opening upward is provided on the upper part of the feed pipe.
[0015] The specific structure of the second stirring rod group is that the second stirring rod group includes at least two groups of second stirring rods distributed vertically, and the ends of the second stirring rods extend toward the side wall of the stirring tank body.
[0016] When mixing and stirring the grain sample, the stirring rod may cause damage to the grain sample. For this reason, the first stirring rod and the second stirring rod are both provided with rubber protective sleeves to protect the grain from being damaged.
[0017] Regarding the setting position of the drop port, the mixing barrel has a bottom plate and a conical side plate. The drop port is set at the intersection of the bottom plate and the conical side plate. The drop port is located at the outer edge of the bottom plate and is opened at the lower end of the conical side plate. The drop ports of the bottom plate and the conical side plate are connected, which is convenient for the grain sample to fall after being stirred by the first stirring rod.
[0018] The beneficial effects of the utility model are:
[0019] The grain sample sampled by the sampler is thrown from the feed pipe to the inner wall of the mixing barrel, and the multiple protrusions will pre-mix the grain sample for the first time, and then the stirring shaft rotates to drive the first stirring rod to mix and stir the grain sample. The grain sample gradually falls into the bottom surface of the stirring tank through the drop opening. There is a certain height difference between the drop opening and the bottom surface of the stirring tank. The continuous falling of the grain sample also has a mixing effect, which can reduce grain accumulation and achieve uniform mixing.
[0020] The radius of the protrusions is set to increase from top to bottom, so that each time the grain sample falls onto the inner wall of the mixing barrel through the sampler, it can be dispersed by more protrusions, which can not only reduce the influence of the upper protrusions on the lower protrusions, but also prepare for the first stirring rod to stir the grain sample;
[0021] The second stirring rod group is arranged to cooperate with the first stirring rod to further stir the grain sample that falls to the bottom of the stirring tank body after being stirred by the first stirring rod, thereby improving the uniform mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the attached picture:
[0023] Figure 1 It is a structural schematic diagram;
[0024] Figure 2 It is a front view;
[0025] Figure 3 for Figure 2 AA section structural diagram;
[0026] Figure 4 It is a schematic diagram of the mixing barrel structure;
[0027] The components represented by the reference numerals in the figure are:
[0028] 1. Mixing tank body; 11. Feed inlet; 12. Discharge outlet; 2. Mixing barrel; 21. Dropping outlet; 22. Bottom plate; 23. Conical side plate; 24. Protrusion; 3. Mixing shaft; 4. First mixing rod; 5. Second mixing rod; 6. Feed pipe; 61. Feed trough; 62. Upper port; 63. Lower port; 7. Motor. DETAILED DESCRIPTION
[0029] See also Figure 1A grain stirring device is shown, comprising a stirring tank body 1, a feeding port 11 is arranged at the upper end of the stirring tank body 1, and a discharging port 12 is arranged at the bottom end thereof, a mixing barrel 2 and a rotatable stirring shaft 3 are arranged in the stirring tank body 1, the stirring shaft 3 is arranged in the stirring tank body 1 to rotate along the vertical direction, the mixing barrel 2 is arranged at the upper part of the stirring tank body 1 and is connected with the feeding port 11, the stirring shaft 3 passes downward through the mixing barrel 2 and extends to the bottom of the stirring tank body 1, the upper end of the stirring shaft 3 passes through the stirring tank body 1 and is connected with an external motor 7, the stirring shaft 3 is rotatably connected to the upper end of the stirring tank body, and the mixing barrel 2 is rotatably connected to the stirring shaft 3.
[0030] The mixing barrel 2 includes an integrally formed bottom plate 22 and a conical side plate 23. The bottom plate 22 has an inner bottom surface. The stirring shaft 3 is provided with a first stirring rod 4 located above the inner bottom surface. A feeding port 21 is provided on one side of the bottom of the mixing barrel 2. A feeding pipe 6 is inserted into the feeding port 11 of the stirring tank body 1. The lower end 63 of the feeding pipe 6 is inclined toward the inner wall of the mixing barrel 2. The inner wall of the mixing barrel 2 is provided with a plurality of staggered protrusions 24, and the lower end 63 is located above the protrusions 24. The intersection of the extension line of the lower part of the feeding pipe 6 and the inner wall of the mixing barrel 2 is located above the highest protrusion 24, so that the food falling through the lower end can be scattered by the protrusions.
[0031] See also Figure 1 and Figure 4 As shown, regarding the specific structure of the mixing barrel 2, the mixing barrel 2 is an inverted conical structure, and therefore, the protrusions 24 thereon are also distributed obliquely up and down. The protrusions 24 arranged relatively to the upper and lower parts are vertically distributed, and the inclined arrangement of the protrusions 24 arranged up and down can increase the contact area between the grain sample and the protrusions 24, so that the grain sample falling from the feeding pipe 6 to the inner wall of the mixing barrel 2 passes through more protrusions 24, and the multiple protrusions 24 are staggeredly distributed, which further increases the contact between the grain and different protrusions 24, and has a better dispersion effect on the grain samples falling at different times, preparing for the next step of stirring the grain sample.
[0032] The specific structure of the above-mentioned protrusion 24 is that the protrusion 24 is a hemispherical protrusion 24. If the radius of the protrusions 24 set up above and below is the same, the grain sample may be dispersed to both sides after contacting the protrusion 24 at a higher position, and will not contact the protrusion 24 of the same size below, thereby reducing the contact area between the grain sample and the protrusion 24. For this reason, the radius of the protrusion 24 is set to increase from top to bottom. A part of the falling grain contacts the protrusion 24 with a smaller size and is dispersed, and the other part will not be blocked by the protrusion 24 with a smaller size, and will continue to fall and contact the protrusion 24 with a larger size below and be dispersed, which can reduce the influence of the upper protrusion 24 on the lower protrusion 24.
[0033] See also Figure 3 and Figure 4As shown, regarding the setting position of the drop opening 21, the drop opening 21 is set at the intersection of the bottom plate 22 and the conical side plate 23. The drop opening 21 is located at the outer edge of the bottom plate 22 and is opened at the lower end of the conical side plate 23. The drop openings 21 of the bottom plate 22 and the conical side plate 23 are connected, which is convenient for the grain sample to fall after being stirred by the first stirring rod 4. In order to facilitate the grain sample to fall to the bottom surface of the stirring tank body 1 at different positions, it plays a role in further dispersing the effect of stirring by the first stirring rod 4. The drop opening 21 can be set to at least two places and symmetrically arranged. In order to prevent the grain sample flowing out of the lower port 63 from falling directly from the drop opening 21 to the bottom surface of the stirring tank body 1 and failing to be stirred by the first stirring rod 4, it is set that the vertical plane where the drop opening 21 and the stirring shaft 3 are located does not overlap with the vertical plane where the lower port 63 and the stirring shaft 3 are located.
[0034] The grain sample is first dispersed by the protrusions 24 on the inner wall of the mixing barrel 2 from the feed inlet 11, and then stirred by the first stirring rod 4, and then falls from one side of the mixing barrel 2 to the bottom of the stirring tank body 1 through the drop port 21, which can pre-mix the grain sample dispersed by the protrusions 24. The first stirring rod 4 can fully stir the dispersed and re-mixed grain sample, thereby improving the mixing uniformity of grain samples contained in different times and different samplers.
[0035] See also Figure 1 As shown, in order to further improve the stirring and mixing effect of the grain sample, a second stirring rod 5 group is also provided on the stirring shaft 3, and the second stirring rod 5 group is arranged near the bottom of the stirring tank body 1. The specific structure of the second stirring rod 5 group is that the second stirring rod 5 group includes at least two groups of second stirring rods 5 distributed up and down. The grain falls through the drop opening 21 and may fall on the bottom surface of the stirring tank body 1 away from the stirring shaft 3. In order to facilitate the second stirring rod 5 to stir and mix most of the grains for the second time, the end of the second stirring rod 5 is arranged to extend to the side wall of the stirring tank body 1. When mixing and stirring the grain sample, the stirring rod may cause damage to the grain sample. For this reason, the first stirring rod 4 and the second stirring rod 5 are both provided with a rubber protective sleeve (not shown in the figure), which controls the speed of the motor 7 to protect the grain from being damaged.
[0036] See also Figure 1 and Figure 4As shown, the shape of the feed pipe 6 is an arc-shaped tube or a bent tube, and the feed pipe 6 has an upper port 62 and a lower port 63. The upper port 62 is used for feeding, and the lower port 63 is used for discharging. Because the lower port 63 needs to be inclined toward the inner wall of the mixing barrel 2, the lower port 63 is set away from the stirring shaft 3 and is set as an arc-shaped tube or a bent tube, so that the upper port 62 and the lower port 63 are both set away from the stirring shaft 3, which can increase the operating space when the upper port 62 is fed. Existing grain sampling is generally performed manually through a sampler. The sampler is a long structure. In order to facilitate the sampler to directly deliver the grain sample into the mixing tank body 1 through the upper port 62 after sampling, the upper end of the feed pipe 6 is arranged to pass through the mixing tank body 1 and extend upward at an angle. The upper part of the feed pipe 6 is provided with a feed long groove 61 with an opening facing upward. The feed long groove 61 is larger than the length of the sampler. The sampler can be placed directly on the feed long groove 61 after sampling. The grain sample can be dropped into the feed pipe 6 by flipping the sampler. The pipe section of the feed pipe 6 located above the mixing tank body 1 is an upwardly inclined structure, and the grain sample can smoothly enter the mixing tank body 1.
Claims
1. A grain stirring device, comprising a stirring tank body (1) having a feed inlet (11) at the upper end, characterized in that: The stirring tank body (1) is provided with a mixing barrel (2) and a rotatable stirring shaft (3); the stirring shaft (3) is rotatably arranged in the stirring tank body (1) along the vertical direction; the mixing barrel (2) is arranged at the upper part of the stirring tank body (1) and is connected to the feeding port (11); the stirring shaft (3) passes through the mixing barrel (2) downward and extends to the bottom of the stirring tank body (1); the mixing barrel (2) is rotatably connected to the stirring shaft (3); the mixing barrel (2) has an inner bottom surface; the stirring shaft (3) is provided with a first stirring rod (4) located above the inner bottom surface; and a feeding port (21) is provided on one side of the bottom of the mixing barrel (2); The feed port (11) is provided with a feed pipe (6), the lower end (63) of the feed pipe (6) is inclined toward the inner wall of the mixing barrel (2), the inner wall of the mixing barrel (2) is provided with a plurality of staggered protrusions (24), and the lower end (63) is located above the protrusions (24).
2. A grain stirring device according to claim 1, characterized in that: A second stirring rod (5) group is also provided on the stirring shaft (3), and the second stirring rod (5) group is arranged close to the bottom of the stirring tank body (1).
3. A grain stirring device according to claim 1, characterized in that: The vertical plane where the material drop opening (21) and the stirring shaft (3) are located does not coincide with the vertical plane where the lower opening (63) and the stirring shaft (3) are located.
4. A grain stirring device according to claim 1, characterized in that: The intersection point of the extended line of the lower part of the feed pipe (6) and the inner wall of the mixing barrel (2) is located above the highest position protrusion (24).
5. A grain stirring device according to claim 1, characterized in that: The protrusion (24) is a hemispherical protrusion (24), and its radius increases from top to bottom.
6. A grain stirring device according to claim 1, characterized in that: The feed pipe (6) is an arc-shaped pipe or a bent pipe.
7. A grain stirring device according to claim 6, characterized in that: The upper end of the feed pipe (6) passes through the stirring tank body (1) and extends upwardly in an inclined manner. The upper part of the feed pipe (6) is provided with a feed long groove (61) opening upwardly.
8. A grain stirring device according to claim 2, characterized in that: The second stirring rod (5) group comprises at least two groups of second stirring rods (5) distributed vertically, and the ends of the second stirring rods (5) extend toward the side wall of the stirring tank body (1).
9. A grain stirring device according to claim 8, characterized in that: The first stirring rod (4) and the second stirring rod (5) are both provided with rubber protective sleeves.
10. A grain stirring device according to claim 1, characterized in that: The mixing barrel (2) comprises a bottom plate (22) and a conical side plate (23), and the material discharge port (21) is arranged at the intersection of the bottom plate (22) and the conical side plate (23).