A wind-wing type rice dust removal device and process

Abstract

The present invention discloses a wind-wing type rice dust removal device, which comprises a horizontal dust removal box, a two-way wind-wing plate group located inside the horizontal dust removal box, and a fan. The fan is installed at one end of the horizontal dust removal box and is in sealed cooperation. The outer wall of the horizontal dust removal box is provided with a feed inlet, and the other end of the horizontal dust removal box is fixedly connected with a conical guide cylinder. The present invention also discloses a wind-wing type rice dust removal process. Step 1: Feeding: Use a screw conveyor to convey rice into the horizontal dust removal box through the feed inlet, and the rotation speed of the screw conveyor is 300-450 r / min. Step 2: Quantification: After the rice enters the horizontal dust removal box, the volume of the rice shall not exceed one-third of the volume inside the horizontal dust removal box. Step 3: Air supply: The fan supplies air into the horizontal dust removal box at a wind speed of 11-15 m / s and an air volume of 3400-3500 m<supgt;3< / supgt> / h. This kind of device and process for removing dust by using wind blowing has good dust removal effect, can prevent dust accumulation in the horizontal dust removal box, and will not damage the rice at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal devices and dust removal processes, and particularly relates to a wind-wing type rice dust removal device and process. Background Art

[0002] Rice dust removal is a step that needs to be carried out after the rice has been finely processed. Generally, a common rice dust removal device is a centrifugal dust collector, which consists of an inner cylinder, an outer cylinder, a conical cylinder, an air inlet, and an ash discharge port. The inner cylinder, the outer cylinder, and the ash discharge port are located on the same axis; dust discharge holes through which rice grains cannot pass are circumferentially and uniformly distributed on the inner cylinder. Part of the rice is put into the inner cylinder, and the rice makes a high-speed spiral rotation from top to bottom in the inner cylinder. During the rotation, under the action of a large centrifugal force, the dust particles are thrown to the inner wall of the outer cylinder and collide and rub against the wall surface, and their speed gradually decreases to zero. Then, under the action of gravity, they fall along the cylinder wall to the conical part and are then discharged from the bottom ash discharge port.

[0003] At present, the centrifugal dust collectors in the above rice processing field have the following problems. On the one hand, due to the action of centrifugal force, the interaction force between the dust and the outer cylinder wall is relatively large, and the dust is easy to adhere to the outer cylinder wall and accumulate, which is not easy to clean and seriously affects the dust removal effect; on the other hand, the high-speed rotation of the inner and outer cylinders is also likely to break the rice, resulting in a decrease in the overall quality of the rice.

[0004] Moreover, the steps for dust removal of rice in the past were as follows: 1. First, put part of the rice into the inner cylinder; 2. Rotate the inner cylinder to separate the dust from the rice and throw the dust onto the outer cylinder wall; 3. The dust is discharged from the ash discharge port; 4. It is also necessary to discharge the clean rice from the inner cylinder and then fill in new rice with dust; in the above step 2, when the inner cylinder rotates, there is mutual friction between the rice grains, which will cause serious wear of the rice grains and additionally increase the powdering; in the above step 4, since the inner cylinder is a relatively large space, when the inner cylinder rotates, the rice in the inner cylinder cannot be regularly and uniformly distributed in the inner cylinder. Therefore, it takes a relatively long time to remove dust from the rice to achieve a better dust removal effect. After the dust removal is completed, the clean rice needs to be discharged, and then the rice with dust needs to be added, so that the inner cylinder cannot continuously remove dust, affecting the work efficiency.

[0005] Therefore, the present invention provides a wind-wing type rice dust removal device and process. Summary of the Invention

[0006] The purpose of the present invention is to propose a wind-wing type rice dust removal device and process in order to solve the problems of poor dust removal effect, serious wear of rice grains, and low dust removal efficiency of common rice dust removal devices.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A wind-wing type rice dust removal device comprises a horizontal dust removal box, a two-way wind-wing plate group located inside the horizontal dust removal box and a fan. The fan is installed at one end of the horizontal dust removal box and is in sealed cooperation. The outer wall of the horizontal dust removal box is provided with a feed inlet. The other end of the horizontal dust removal box is fixedly connected with a conical guide cylinder. The outlet end of the conical guide cylinder is higher than the horizontal dust removal box and is fixedly connected with a shunt pipe. The two sides of the horizontal dust removal box are penetrated and connected with quadrangular pyramid sleeves, and the large ends are located inside the horizontal dust removal box. The outer wall of the shunt pipe is communicated with the small ends of the two quadrangular pyramid sleeves through two return bends. One end of the shunt pipe is connected with a wind valve. The outer walls of the two return bends are both connected with filter sleeves. The two-way wind-wing plate group includes two symmetrically distributed square plates. The opposite sides of the two square plates are convex curved surfaces, and the convex curved surfaces are used in cooperation with the large ends of the quadrangular pyramid sleeves.

[0009] As a further description of the above technical solution:

[0010] The two-way wind-wing plate group includes a two-way telescopic rod, and the two-way telescopic rod is composed of a positioning sleeve, two guide rods slidably connected with the positioning sleeve and a spring. The opposite ends of the two guide rods are fixedly connected with the opposite sides of the two square plates.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the positioning sleeve is provided with uniformly distributed rolling grooves, and rolling balls that are in rolling cooperation with the outer walls of the guide rods are rollingly connected in the rolling grooves.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the positioning sleeve and at the top is fixedly connected with the top wall inside the horizontal dust removal box through a suspension rod.

[0015] As a further description of the above technical solution:

[0016] The return bend is in a conical tubular shape and the large end is fixedly connected with the shunt pipe.

[0017] As a further description of the above technical solution:

[0018] A pressure relief filter pipe is installed on the side of the horizontal dust removal box where the fan is located.

[0019] As a further description of the above technical solution:

[0020] One end of the shunt pipe is connected with a wind valve, one end of the wind valve is connected with a vertically distributed air pipe, and the bottom of the air pipe is connected with a wind closing device.

[0021] The wind-wing type rice dust removal process in this case includes the following steps:

[0022] Step 1, feeding: Use a screw conveyor to convey rice through the feed inlet into the horizontal dust removal box. The rotational speed of the screw conveyor is 300 - 450 r / min;

[0023] Step 2, quantification: After the rice enters the horizontal dust removal box, the volume of the rice shall not exceed one-third of the internal volume of the horizontal dust removal box;

[0024] Step 3, air supply: The fan supplies air to the horizontal dust removal box at a wind speed of 11 - 15 m / s and an air volume of 3400 - 3500 m³ / h.

[0025] Step 4, dust removal: The air flow enters the horizontal dust removal box to blow the rice. Under the guidance of the conical guide cylinder, the rice passes through two return elbows and is controlled by the air flow of the two-way wind wing plate group, then returns to the horizontal dust removal box and stays for 3 - 5 minutes.

[0026] Step 5, discharging: Open the air valve at one end of the shunt pipe and discharge the material with the help of wind force.

[0027] As a further description of the above technical solution:

[0028] In Step 2, use a platform scale to weigh the gross weight of the entire dust removal device. After the rice enters the horizontal dust removal box, weigh the total weight. Compare the total weight with the gross weight and convert the volume occupied by the rice in the horizontal dust removal box.

[0029] As a further description of the above technical solution:

[0030] In Step 5, use a rotary air lock to assist in discharging the material.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] In the present invention, a fan is arranged at one end of the horizontal dust removal box, and a conical guide cylinder is arranged at the other end. The outlet end of the conical guide cylinder is higher than the horizontal dust removal box and is connected to the horizontal dust removal box through two return elbows. At the same time, a filter sleeve is arranged on the return elbow. When the rice circulates in the horizontal dust removal box, dust is discharged through the filter sleeve. A two-way wind wing plate group is arranged in the horizontal dust removal box. Adopting the wind-wing type rice dust removal process, the fan supplies air to the horizontal dust removal box 1 at a wind speed of 11 - 15 m / s, driving an air volume of 3400 - 3500 m³ / h, which can drive the rice to flow. The two square plates on the two-way wind wing plate group use the curved surface structures on their opposite sides to realize the opening and closing of the four-sided pyramid-shaped sleeve by wind force control, thereby controlling the confluence of the rice in the return elbow. Such a device and process for dust removal by wind blowing have good dust removal effect, prevent dust accumulation in the horizontal dust removal box, and will not damage the rice. Description of the Drawings

[0033] Figure 1 The top view structural schematic diagram of a wind-wing type rice dust removal device proposed by the present invention;

[0034] Figure 2 The front view structural schematic diagram of a wind-wing type rice dust removal device proposed by the present invention;

[0035] Figure 3 The front view structural schematic diagram of a two-way wind-wing plate group of a wind-wing type rice dust removal device proposed by the present invention;

[0036] Figure 4 The left view sectional structural schematic diagram of a horizontal dust removal box of a wind-wing type rice dust removal device proposed by the present invention.

[0037] Legend description:

[0038] 1. Horizontal dust removal box; 11. Conical guide cylinder; 111. Shunt pipe; 12. Square pyramid sleeve; 13. Feed inlet; 14. Pressure relief filter pipe; 2. Two-way wind-wing plate group; 21. Square plate; 211. Outer convex curved surface; 22. Two-way telescopic rod; 221. Positioning sleeve; 2211. Suspension rod; 222. Guide rod; 2212. Ball; 223. Spring; 3. Return elbow; 31. Filter sleeve; 4. Air valve; 5. Air duct; 6. Air lock; 7. Fan. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figures 1-4, a wind-wing type rice dust removal device, which consists of a horizontal dust removal box 1, a two-way wind-wing plate group 2 located inside the horizontal dust removal box 1, and a fan 7. The fan 7 is installed at one end of the horizontal dust removal box 1 and is in sealed cooperation. The fan 7 is used to send air into the horizontal dust removal box 1. The outer wall of the horizontal dust removal box 1 is provided with a feed port 13 for injecting rice. A sealing cover is provided on the feed port 13, and it is sealed after injecting rice. The other end of the horizontal dust removal box 1 is fixedly connected with a conical guide cylinder 11. The outlet end of the conical guide cylinder 11 is higher than the horizontal dust removal box 1 and is fixedly connected with a shunt pipe 111. The rice rises along the inclined surface inside the conical guide cylinder 11 to a position higher than the horizontal dust removal box 1 under the blowing of the air flow. The two sides of the horizontal dust removal box 1 are penetrated and connected with quadrangular pyramid sleeves 12, and the large ends are located inside the horizontal dust removal box 1. The outer wall of the shunt pipe 111 is communicated with the small ends of the two quadrangular pyramid sleeves 12 through two return bends 3. The rice located at the position of the shunt pipe 111 slides along the return bends 3 under the action of wind force and its own weight and returns to the horizontal dust removal box 1 again. One end of the shunt pipe 111 is connected with a wind valve 4, and the wind valve 4 is used to block and unload materials. The outer walls of the two return bends 3 are both connected with filter sleeves 31. The two filter sleeves 31 are arranged close to the shunt pipe 111. The filter sleeves 31 are communicated with the return bends 3 for dust removal. The two-way wind-wing plate group 2 includes two symmetrically distributed square plates 21. The opposite sides of the two square plates 21 are convex curved surfaces 211. The convex curved surfaces 211 are used in cooperation with the large ends of the quadrangular pyramid sleeves 12. The two square plates 21 are slidably matched in the two-way wind-wing plate group 2. One side is a convex curved surface 211 and the other side is a plane. Thus, when the air flow passes through the square plates 21, the convex curved surfaces 211 block the quadrangular pyramid sleeves 12 to prevent the rice in the return bends 3 from entering the horizontal dust removal box 1. When the air flow decreases, the two square plates 21 move towards each other, and the rice in the return bends 3 enters the horizontal dust removal box 1, which has the function of automatically controlling the circulation of air flow for dust removal, with good dust removal effect and without damaging the rice grains;

[0042] The two-way wind-wing plate group 2 includes a two-way telescopic rod 22. The two-way telescopic rod 22 consists of a positioning sleeve 221, two guide rods 222 slidably connected with the positioning sleeve 221, and a spring 223. The opposite ends of the two guide rods 222 are fixedly connected to the opposite sides of the two square plates 21. The function of the spring 223 is to keep the two square plates 21 under the action of tensile force towards each other;

[0043] The inner wall of the positioning sleeve 221 is provided with evenly distributed rolling grooves, and rolling balls 2212 that are in rolling cooperation with the outer wall of the guide rod 222 are rollingly connected in the rolling grooves. The rolling balls 2212 can reduce the resistance between the guide rod 222 and the positioning sleeve 221;

[0044] The outer wall of the positioning sleeve 221 and at the top is fixedly connected to the top wall inside the horizontal dust removal box 1 through a suspension rod 2211. The positioning sleeve 221 is in a suspended state and will not increase the resistance to the rice;

[0045] The return elbow 3 is conical tubular, and its large end is fixedly connected to the shunt pipe 111. The inner diameter of the return elbow 3 is conical. Thus, the wind speed at its small end is high, which is convenient for rice to enter the horizontal dust removal box 1.

[0046] The wind-wing type rice dust removal process in this case includes the following steps:

[0047] Step 1, feeding: Use a screw conveyor to convey rice into the horizontal dust removal box 1 through the feeding port. The rotation speed of the screw conveyor is 300 - 450 r / min. Feeding through the screw conveyor can avoid secondary pollution during the conveying process. Conveying at this rotation speed can achieve rapid feeding;

[0048] Step 2, quantification: After the rice enters the horizontal dust removal box 1, the volume of the rice shall not exceed one-third of the volume of the horizontal dust removal box 1. Such a capacity is convenient for the blowing of the fan 7. Excessive amount is likely to cause blockage, and too little amount will result in low dust removal efficiency. Use a weighbridge to weigh the gross weight of the entire dust removal device. After the rice enters the horizontal dust removal box 1, weigh the total weight. Compare the total weight with the gross weight and convert the volume occupied by the rice in the horizontal dust removal box. Thus, standardized operation can be carried out, and the operation is simple;

[0049] Step 3, air supply: The fan 7 supplies air to the horizontal dust removal box 1 at a wind speed of 11 - 15 m / s. Such a wind speed can drive the light rice grains to flow rapidly, and the blowing air volume is 3400 - 3500 m³ / h. This air volume can cover the entire horizontal dust removal box 1 to achieve blow-by without dead angles;

[0050] Step 4, dust removal: The air flow enters the horizontal dust removal box 1 to blow the rice. Under the guidance of the conical guide cylinder 11, the rice passes through two return elbows 3 and is controlled by the air flow of the double-sided wind-wing plate group 2, then returns to the horizontal dust removal box 1 and stays for 3 - 5 minutes. This time is for the rice in the horizontal dust removal box 1 to flow and circulate through the return elbow 3 under the action of wind force. During the circulation, the dust in the rice is discharged through the filter sleeve 31;

[0051] Step 5, discharging: Open the air valve 4 at one end of the shunt pipe 111 and discharge the material with the help of wind force.

[0052] Embodiment 2

[0053] Please refer to Figures 1-4, a wind-wing type rice dust removal device, which consists of a horizontal dust removal box 1, a two-way wind wing plate group 2 located inside the horizontal dust removal box 1, and a fan 7. The fan 7 is installed at one end of the horizontal dust removal box 1 and is in sealed cooperation. The fan 7 is used to send air into the horizontal dust removal box 1. The outer wall of the horizontal dust removal box 1 is provided with a feed inlet 13 for injecting rice. A sealing cover is provided on the feed inlet 13 and is sealed after injecting rice. The other end of the horizontal dust removal box 1 is fixedly connected with a conical guide cylinder 11. The outlet end of the conical guide cylinder 11 is higher than the horizontal dust removal box 1 and is fixedly connected with a shunt pipe 111. The rice rises along the inclined plane inside the conical guide cylinder 11 to a position higher than the horizontal dust removal box 1 under the blowing of the air flow. The two sides of the horizontal dust removal box 1 are penetrated and connected with quadrangular pyramid sleeves 12, and the large ends are located inside the horizontal dust removal box 1. The outer wall of the shunt pipe 111 is communicated with the small ends of the two quadrangular pyramid sleeves 12 through two return bends 3. The rice located at the position of the shunt pipe 111 slides along the return bends 3 under the action of wind force and its own weight and returns to the horizontal dust removal box 1 again. One end of the shunt pipe 111 is connected with a wind valve 4, and the wind valve 4 is used for blocking and discharging. The outer walls of the two return bends 3 are both connected with filter sleeves 31. The two filter sleeves 31 are arranged close to the shunt pipe 111. The filter sleeves 31 are communicated with the return bends 3 for dust removal. The two-way wind wing plate group 2 includes two symmetrically distributed square plates 21. The opposite sides of the two square plates 21 are convex curved surfaces 211. The convex curved surfaces 211 are used in cooperation with the large ends of the quadrangular pyramid sleeves 12. The two square plates 21 are slidably matched in the two-way wind wing plate group 2. One side is a convex curved surface 211 and the other side is a plane. Thus, when the air flow passes through the square plates 21, the convex curved surfaces 211 block the quadrangular pyramid sleeves 12 to prevent the rice in the return bends 3 from entering the horizontal dust removal box 1. When the air flow decreases, the two square plates 21 move towards each other, and the rice in the return bends 3 enters the horizontal dust removal box 1, which has the function of automatically controlling the circulation of the air flow for dust removal, with good dust removal effect and no damage to the rice grains;

[0054] The two-way wind wing plate group 2 includes a two-way telescopic rod 22. The two-way telescopic rod 22 consists of a positioning sleeve 221, two guide rods 222 slidably connected with the positioning sleeve 221, and a spring 223. The opposite ends of the two guide rods 222 are fixedly connected to the opposite sides of the two square plates 21. The function of the spring 223 is to keep the two square plates 21 under the action of tensile force towards each other;

[0055] The inner wall of the positioning sleeve 221 is provided with uniformly distributed rolling grooves. Inside the rolling grooves, there are rolling beads 2212 that are in rolling cooperation with the outer wall of the guide rod 222. The rolling beads 2212 can reduce the resistance between the guide rod 222 and the positioning sleeve 221;

[0056] The outer wall of the positioning sleeve 221 and at the top is fixedly connected to the top wall inside the horizontal dust removal box 1 through a suspension rod 2211. The positioning sleeve 221 is in a suspended state and will not increase the resistance to the rice;

[0057] The return elbow 3 is conical tubular, and its large end is fixedly connected to the shunt pipe 111. The inner diameter of the return elbow 3 is conical. Thus, the wind speed at its small end is high, which is convenient for rice to enter the horizontal dust removal box 1;

[0058] On one side of the horizontal dust removal box 1 where the fan 7 is located, a pressure relief filter pipe 14 is installed. The pressure relief filter pipe 14 is also a connecting pipe with a filter screen. Thus, when the wind force is too high, the air flow in the horizontal dust removal box 1 is released through the pressure relief filter pipe 14, which has a buffering effect;

[0059] One end of the air valve 4 is connected to a vertically distributed air pipe 5. A filter screen for filtering rice is arranged at the top of the air pipe 5, and a rotary air lock 6 is connected to the bottom of the air pipe 5. Thus, when discharging and feeding rice, the rice will not fly out externally, and then the rotary air lock 6 is used for impact-free discharging.

[0060] The wind wing type rice dust removal process in this case includes the following steps:

[0061] Step 1, feeding: Use a screw conveyor to convey rice into the horizontal dust removal box 1 through the feed inlet. The rotation speed of the screw conveyor is 300 - 450 r / min. By feeding with the screw conveyor, secondary pollution during the conveying process is avoided. Feeding at this rotation speed can achieve rapid feeding;

[0062] Step 2, metering: After the rice enters the horizontal dust removal box 1, the volume of the rice shall not exceed one-third of the volume of the horizontal dust removal box 1. Such a capacity is convenient for the blowing of the fan 7. Excessive amount is prone to blockage, and too little amount results in low dust removal efficiency. Use a weighbridge to weigh the gross weight of the entire dust removal device. After the rice enters the horizontal dust removal box 1, weigh the total weight. Compare the total weight with the gross weight and convert the volume occupied by the rice in the horizontal dust removal box. Thus, standardized operation can be carried out, and the operation is simple;

[0063] Step 3, air supply: The fan 7 supplies air to the horizontal dust removal box 1 at a wind speed of 11 - 15 m / s. Such a wind speed can drive the light rice grains to flow rapidly, and the blowing air volume is 3400 - 3500 m³ / h. This air volume can cover the entire horizontal dust removal box 1 to achieve blow-by without dead angles;

[0064] Step 4, dust removal: The air flow enters the horizontal dust removal box 1 to blow the rice. Under the guidance of the conical guide cylinder 11, the rice passes through two return elbows 3 and is controlled by the air flow of the double-sided wind wing plate group 2, then returns to the horizontal dust removal box 1 and stays for 3 - 5 minutes. This time is for the rice in the horizontal dust removal box 1 to flow and circulate through the return elbow 3 under the action of wind force. When circulating, the dust in the rice is discharged through the filter sleeve 31;

[0065] Step 5, discharging: Open the air valve 4 at one end of the shunt pipe 111, discharge materials by means of wind force, and use the air lock 6 to assist in discharging. After opening the air valve 4, rice accumulates in the air pipe 5 and is discharged without impact through the air lock 6.

[0066] Example 3

[0067] Based on Example 2, the difference is that; the wind-wing type rice dust removal process includes the following steps:

[0068] Step 3, air supply: The fan 7 supplies air to the horizontal dust removal box at a wind speed of 11 m / s and an air volume of 3400 m³ / h;

[0069] Step 4, dust removal: The air flow enters the horizontal dust removal box to blow the rice. The rice is guided by the conical guide cylinder and passes through two return elbows 3 under the air flow control of the double-direction wind-wing plate group 2, then returns to the horizontal dust removal box 1 and stays for 5 minutes. From this, it can be judged that the wind speed and air volume of the fan 7 directly affect the dust removal time.

[0070] Example 4

[0071] Based on Example 2, the difference is that; the wind-wing type rice dust removal process includes the following steps:

[0072] Step 3, air supply: The fan 7 supplies air to the horizontal dust removal box at a wind speed of 15 m / s and an air volume of 3500 m³ / h;

[0073] Step 4, dust removal: The air flow enters the horizontal dust removal box to blow the rice. The rice is guided by the conical guide cylinder and passes through two return elbows 3 under the air flow control of the double-direction wind-wing plate group 2, then returns to the horizontal dust removal box 1 and stays for 3 minutes.

[0074] Working principle: When the dust removal device is in use, first connect the filter sleeve 31 and the pressure relief filter pipe 14 to the external dust removal equipment, send the rice into the horizontal dust removal box 1 through the feed port 13, then turn on the fan 7. The air flow generated by the fan 7 blows the rice. The rice rolls upward along the conical guide cylinder 11 under the action of wind force and enters the two return elbows 3 respectively under the guidance of the shunt pipe 111. The filter sleeve 31 is arranged on the wall of the return elbow 3. When the flowing rice passes through the position of the filter sleeve 31, dust is discharged, and at the same time, it returns to the quadrangular pyramid-shaped sleeve 12. At the same time, under the action of wind force, the two square plates 21 use fluid mechanics. The air flow velocity on the side of the curved surface 211 is large, and the two square plates 21 move in the opposite direction to block the quadrangular pyramid-shaped sleeve 12. When the return elbow is filled, the filter sleeve 31 is blocked, the air flow in the horizontal dust removal box 1 decreases, and the two square plates 21 reset under the action of the spring 223. The rice in the quadrangular pyramid-shaped sleeve 12 re-enters the horizontal dust removal box 1 for cyclic dust removal.

[0075] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent substitutions or changes according to the technical solution and inventive concept of the present invention.

Claims

1. A dust removal process for a wind wing type rice dust removal device, characterized in that, The dust removal device comprises a horizontal dust removal box, a two-way wind wing plate group located inside the horizontal dust removal box, and a fan. The fan is installed at one end of the horizontal dust removal box and is in sealed cooperation. The outer wall of the horizontal dust removal box is provided with a feed inlet. The other end of the horizontal dust removal box is fixedly connected with a conical guide cylinder. The outlet end of the conical guide cylinder is higher than the horizontal dust removal box and is fixedly connected with a shunt pipe. The two sides of the horizontal dust removal box are penetrated and connected with quadrangular pyramid sleeves, and the large ends are located inside the horizontal dust removal box. The outer wall of the shunt pipe is communicated with the small ends of the two quadrangular pyramid sleeves through two return bends. One end of the shunt pipe is connected with a wind valve. The outer walls of the two return bends are both connected with filter sleeves. The two-way wind wing plate group includes two symmetrically distributed square plates. The opposite sides of the two square plates are convex curved surfaces, and the convex curved surfaces are used in cooperation with the large ends of the quadrangular pyramid sleeves. The dust removal process includes the following steps: Step 1, feeding: Use a screw conveyor to convey rice into the horizontal dust removal box through the feed inlet. The rotation speed of the screw conveyor is 300 - 450 r / min. Step 2, quantification: After the rice enters the horizontal dust removal box, the volume of the rice shall not exceed one-third of the internal volume of the horizontal dust removal box. Step 3, air supply: The fan supplies air into the horizontal dust removal box at a wind speed of 11 - 15 m / s and an air volume of 3400 - 3500 m³ / h. Step 4, dust removal: The air flow enters the horizontal dust removal box to blow the rice. The rice passes through the two return bends under the guidance of the conical guide cylinder. When the air flow passes through the square plates, the convex curved surfaces block the quadrangular pyramid sleeves to prevent the rice in the return bends from entering the horizontal dust removal box. When the air flow decreases, the two square plates move towards each other, and the rice in the return bends flows back into the horizontal dust removal box and remains for 3 - 5 minutes. This time is the time for the rice to flow and circulate through the return bends under the action of wind force in the horizontal dust removal box 1. Step 5, discharging: Open the wind valve at one end of the shunt pipe and discharge the material with the help of wind force.

2. The dust removal process of a wind-wing type rice dust removal device according to claim 1, characterized in that, The two-way wind wing plate group includes a two-way telescopic rod. The two-way telescopic rod is composed of a positioning sleeve, two guide rods slidably connected to the positioning sleeve, and a spring. The opposite ends of the two guide rods are fixedly connected to the opposite sides of the two square plates.

3. The dust removal process of a wind-wing type rice dust removal device according to claim 2, characterized in that, The inner wall of the positioning sleeve is provided with evenly distributed rolling grooves, and rolling balls that are in rolling cooperation with the outer walls of the guide rods are rollingly connected in the rolling grooves.

4. The dust removal process of a wind-wing type rice dust removal device according to claim 3, characterized in that, The outer wall of the positioning sleeve and at the top is fixedly connected to the top inner wall in the horizontal dust removal box through a suspension rod.

5. The dust removal process of a wind-wing type rice dust removal device according to claim 1, characterized in that, The return bend is a conical tube, and the large end is fixedly connected to the shunt pipe.

6. The dust removal process of a wind wing type rice dust removal device according to claim 1, characterized in that, A pressure relief filter pipe is installed on the side of the horizontal dust removal box where the fan is located.

7. The dust removal process of a wind-wing type rice dust removal device according to claim 1, characterized in that, One end of the wind valve is connected with a vertically distributed air pipe, and a rotary air lock is connected to the bottom of the air pipe.

8. The dust removal process of a wind-wing type rice dust removal device according to claim 1, characterized in that, In step 2, use a weighbridge to weigh the gross weight of the entire dust removal device. After the rice enters the horizontal dust removal box, weigh the total weight. Compare the total weight with the gross weight and convert the volume occupied by the rice in the horizontal dust removal box.

9. The dust removal process of a wind-wing type rice dust removal device according to claim 1, characterized in that In step 5, use a rotary air lock to assist in discharging the material.

Images