Multi-stage screening type grain particle rotary vibration screen
Through the multi-stage sieving grain pellet rotary vibrating screen, combined with the design of rotary screen cylinder and screen box 2, the problem of difficult straw accumulation and dust removal in traditional screening devices is solved, and efficient multi-stage screening effect is achieved.
Patent Information
- Application Number
- CN202420745797.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-04-11
AI Technical Summary
During the screening process of traditional grain screening devices, straw is easily accumulated on the top of the screen plate, resulting in the screening hole being covered, reducing the screening efficiency, and difficult to effectively remove dust from the grain.
A multi-stage sieved grain pellet rotary vibration screen is used to achieve multi-stage screening by cooperating with the screen plate in the second screen box. The scraper on the rotating screen cylinder lifts up the grain and straw, speeding up the separation process, and the fan blows the air to discharge straw through the discharging port to avoid accumulation. At the same time, the screen box 2 further removes dust through a vibrating screen plate.
Effectively remove straw and dust from grain, improve screening efficiency, avoid the efficiency reduction caused by straw accumulation, and realize multi-level screening of grain.
Smart Images
Figure CN222805519U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grain screening, in particular to a multi-stage screening type grain particle rotary vibrating screen. Background Art
[0002] Grain refers to the general term for various plant seeds used in cooking food, and can also be generally referred to as cereals. After grain is planted, it will be collected in a centralized manner in the appropriate season. With the development of science and technology and the popularization of agricultural automation, when harvesting grain, the straw and grain can be separated and the preliminary screening process can be completed. After the collection is completed, another screening process will be carried out to further remove the remaining straw and dust in the grain before the grain can be stored.
[0003] Traditional common screening devices usually use a reciprocating sieve plate to screen the residual straw in the grain. However, during the screening process, the straw will continue to accumulate on the top of the sieve plate, covering some of the sieve holes of the sieve plate, reducing the number of sieve holes that can pass the grain, thereby causing the problem of reduced screening efficiency. In addition, it is inconvenient to screen out the residual dust during the screening process.
[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content
[0005] The utility model aims to provide a multi-stage screening type grain particle rotary vibrating screen to solve the above-mentioned technical defects. The multi-stage screening of grain is carried out by cooperating with the rotary screen drum in the screening box one and the screen plate in the screening box two, which can effectively remove the residual straw and dust in the grain. When the rotating screen drum screens the grain, the internal scraper lifts the grain and the straw, which on the one hand accelerates the separation of the grain and the straw and improves the screening effect. On the other hand, the fan blows air into the interior of the rotating screen drum, which facilitates the blowing of the straw through the impurity discharge port to the outside of the screening box one, effectively avoiding the problem that the screened straw is continuously accumulated in the rotating screen drum and the screening efficiency is reduced.
[0006] The invention is realized by the following technical scheme: a multi-stage screening type grain particle rotary vibrating screen, comprising a base, two groups of support plates are symmetrically welded on both sides of the top of the base, a screening box 1 is fixedly connected between the tops of the two groups of support plates, a rotating screen drum is arranged inside the screening box 1, and one side of the rotating screen drum is an open end, a hollow tube is rotatably connected at the center of a side of the rotating screen drum away from the open side thereof, one end of the hollow tube extends through and extends to the outside of the screening box 1 and is fixedly connected thereto, a feeding pipe is fixedly connected to a side of the screening box 1 close to the open side of the rotating screen drum, and one end of the feeding pipe extends through and extends to the inside of the rotating screen drum;
[0007] A screening box two is arranged below the screening box one, a screening plate is fixedly connected to the interior of the screening box two, a material guide hopper is fixedly connected to the bottom of the screening box one, a telescopic tube is fixedly connected between the material guide hopper and the screening box two, a discharge pipe is fixedly connected to the side of the screening box two away from the telescopic tube and located on the top of the sieve plate, and an ash discharge pipe is fixedly connected to the bottom of the side of the screening box two away from the telescopic tube.
[0008] Preferably, a motor is bolted to the outer wall of the screening box on one side close to the hollow tube, the output shaft head of the motor extends through the screening box and is fixedly connected to a gear, a gear ring meshing with the gear is fixedly connected to the outer wall of the rotating screen drum, a plurality of fixed shafts are fixedly connected to the inner wall of the screening box on one side close to the feed pipe and located below the rotating screen drum, and each fixed shaft is rotatably connected to a roller that is rollingly connected to the outer wall of the rotating screen drum.
[0009] Preferably, a fan is bolted to the outer wall of the screening box on one side close to the motor, a connecting pipe is fixedly connected between the air outlet of the fan and the hollow tube, an end of the hollow tube away from the connecting pipe is fixedly connected to an air outlet disk, a debris discharge pipe is fixedly connected to the bottom of the screening box on one side close to the feed pipe, and a debris discharge port connected to the debris discharge pipe is opened on the inner wall of the screening box.
[0010] Preferably, a plurality of scrapers distributed in a ring array are fixedly connected to the inner side wall of the rotating screen drum, and a cover plate is hingedly connected to one end of the feed pipe located inside the rotating screen drum.
[0011] Preferably, two groups of support plates are symmetrically welded to one side of the top of the base close to the discharge pipe, the outer walls on both sides of the screening box two are rotatably connected to the top of the corresponding support plates, two groups of springs are fixedly connected between the two sides of the bottom of the screening box two and the base, a U-shaped frame is welded to the top of the base between the two groups of springs, the top of the U-shaped frame is rotatably connected to a cam through a rotating shaft, the bottom of the screening box two is fixedly connected to an abutment block slidably connected to the outer side wall of the cam, and a motor two for driving the cam to rotate is bolted to the outer wall of one side of the U-shaped frame.
[0012] Preferably, the rotating screen drum and the second screening box are both inclined, the opening end of the rotating screen drum is higher than the end of the rotating screen drum close to the hollow tube, and the end of the second screening box close to the telescopic tube is higher than the end of its discharge pipe.
[0013] The beneficial effects of the utility model are as follows:
[0014] (1) The utility model uses a motor to drive a rotating screen drum to rotate to screen the grain once, so as to screen out the residual straw in the grain. The grain and dust enter the top of the screen plate in the screening box 2 through a telescopic tube, and the motor 2 drives the screening box 2 to vibrate to screen the grain twice, so as to screen out the dust in the grain, thereby realizing a multi-stage screening effect on the grain;
[0015] (2) According to the utility model, when the rotary screen drum rotates to screen the grain, the scraper on the rotary screen drum lifts up the grain and the straw, accelerates the separation of the grain and the straw and improves the screening effect. At this time, the fan blows air into the interior of the rotary screen drum, so that the lifted straw can be blown out to the outside of the screening box through the impurity discharge port, effectively avoiding the problem that the screened straw is continuously accumulated in the rotary screen drum and the screening efficiency is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings;
[0017] Figure 1 It is a structural stereogram of the utility model;
[0018] Figure 2 It is a front side sectional view of the screening box 1 of the utility model;
[0019] Figure 3 It is a cutaway stereogram of a screening box 1 of the utility model;
[0020] Figure 4 It is a cutaway stereogram of the rotary screen drum of the utility model;
[0021] Figure 5 This is a schematic diagram of the connection between the screening box 2 and the base of the utility model;
[0022] Figure 6 It is a front side sectional view of the screening box 2 of the utility model.
[0023] Legend:
[0024] 1. Base; 11. Support plate; 12. Support plate; 13. Spring; 14. U-shaped frame; 15. Cam; 16. Motor 2;
[0025] 2. Screening box 1; 21. Feed pipe; 22. Guide hopper; 23. Telescopic tube; 24. Motor 1; 25. Gear; 26. Roller; 27. Drain pipe; 28. Drain port; 29. Cover plate;
[0026] 3. Rotating screen drum; 31. Hollow tube; 32. Gear ring; 33. Fan; 34. Connecting pipe; 35. Air outlet plate; 36. Scraper;
[0027] 4. Screening box 2; 41. Screen plate; 42. Discharge pipe; 43. Ash discharge pipe; 44. Abutment block. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] Embodiment 1:
[0030] The problem that it is difficult to simultaneously screen the residual straw and dust in the grain in the prior art can be solved by the following solutions:
[0031] See also Figure 1-Figure 6 As shown, this embodiment is a multi-stage screening grain particle rotary vibrating screen, comprising a base 1, two groups of support plates 11 are symmetrically welded on both sides of the top of the base 1, the support plates 11 are used to fix the screening box 2, the screening box 2 is fixedly connected between the tops of the two groups of support plates 11, and a rotating screen drum 3 is arranged inside the screening box 2, and the rotating screen drum 3 is used to screen the residual straw in the grain from the grain, and one side of the rotating screen drum 3 is an open end, which is convenient for putting the grain to be screened into the rotating screen drum 3, and The screened straw is discharged, and a hollow tube 31 is rotatably connected to the center of one side of the rotating screen drum 3 away from the opening side thereof, and one end of the hollow tube 31 extends through and extends to the outside of the screening box 2 and is fixedly connected thereto. The hollow tube 31 is used to rotatably connect the rotating screen drum 3 to the inside of the screening box 2, and to achieve the effect of blowing air inside the rotating screen drum 3. A feed pipe 21 is fixedly connected to one side of the screening box 2 close to the opening side of the rotating screen drum 3, and one end of the feed pipe 21 extends through and extends to the inside of the rotating screen drum 3;
[0032] A screening box 2 4 is provided below the screening box 1 2, and a sieve plate 41 is fixedly connected to the interior of the screening box 2 4, and the sieve plate 41 is used to screen out the dust remaining in the grain from the grain. A guide hopper 22 is fixedly connected to the bottom of the screening box 2, and a telescopic tube 23 is fixedly connected between the guide hopper 22 and the screening box 2 4. The provided guide hopper 22 cooperates with the telescopic tube 23 to facilitate the collection of the grain screened out by the straw and put it into the screening box 2 4. While connecting the screening box 1 2 with the screening box 2 4 through the telescopic tube 23, it is avoided to affect the vibration effect of the screening box 2 4. A discharge pipe 42 is fixedly connected to the side of the screening box 2 4 away from the telescopic tube 23 and located on the top of the sieve plate 41 for discharging the grain from which the straw and dust are removed, and a dust discharge pipe 43 is fixedly connected to the bottom of the side of the screening box 2 4 away from the telescopic tube 23 for discharging the screened dust.
[0033] A motor 24 is bolted to the outer wall of the screening box 2 near the hollow tube 31. The output shaft head of the motor 24 extends through the screening box 2 and is fixedly connected to a gear 25. The output shaft of the motor 24 is rotatably connected to the screening box 2. A gear ring 32 meshing with the gear 25 is fixedly connected to the outer wall of the rotating screen drum 3. The gear 25 is driven to rotate by the motor 24, and the gear 25 and the meshing gear ring 32 drive the rotating screen drum 3 to rotate, thereby achieving the effect of straw screening. A plurality of fixed shafts are fixedly connected to the inner wall of the screening box 2 near the feed pipe 21 and located below the rotating screen drum 3. Each fixed shaft is rotatably connected to a roller 26 rollingly connected to the outer wall of the rotating screen drum 3. By arranging a plurality of rollers 26 rollingly connected to the outer wall of the rotating screen drum 3 below the rotating screen drum 3, the rotation stability of the opening side of the rotating screen drum 3 is effectively increased.
[0034] Two groups of support plates 12 are symmetrically welded on one side of the top of the base 1 near the discharge pipe 42. The support plates 12 are used to rotatably install the screening box 2 4. The outer walls on both sides of the screening box 2 4 are rotatably connected to the tops of the corresponding support plates 12. Two groups of springs 13 are fixedly connected between the bottom sides of the screening box 2 4 and the base 1. A U-shaped frame 14 is welded on the top of the base 1 between the two groups of springs 13. The top of the U-shaped frame 14 is rotatably connected to a cam 15 through a rotating shaft. The bottom of the screening box 2 4 is fixedly connected to an abutment block 44 that is slidably connected to the outer side wall of the cam 15. When the driving cam 15 rotates and with the cooperation of the spring 13, the screening box 2 4 has a vibration effect, which in turn drives the internal sieve plate 41 to vibrate, thereby achieving the effect of screening dust in the grain and avoiding the problem of clogging of the sieve holes of the sieve plate 41. A motor 2 16 for driving the cam 15 to rotate is bolted to the outer wall of one side of the U-shaped frame 14.
[0035] The rotating screen drum 3 and the screening box 24 are both inclined. The opening end of the rotating screen drum 3 is higher than the end of the rotating screen drum 3 close to the hollow tube 31, which helps to increase the contact between the grain entering the rotating screen drum 3 and the multiple sieve holes on the rotating screen drum 3, thereby increasing the screening efficiency. The end of the screening box 24 close to the telescopic tube 23 is higher than the end of its discharge pipe 42, which is convenient for screening dust from the grain and accelerates the discharge of grain and dust.
[0036] Embodiment 2:
[0037] In the process of grain screening, straw is constantly accumulated in the rotating screen drum, reducing the screening efficiency. The following solutions can be used to solve the problem:
[0038] See also Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a fan 33 is bolted to the outer wall of one side of the screening box 2 near the motor 24, and a connecting pipe 34 is fixedly connected between the air outlet of the fan 33 and the hollow tube 31. Through the cooperation of the fan 33, the connecting pipe 34 and the hollow tube 31, the effect of blowing air into the rotating screen drum 3 is achieved, and the end of the hollow tube 31 away from the connecting pipe 34 is fixedly connected to an air outlet plate 35, which has the effect of increasing the blowing area. A debris discharge pipe 27 is fixedly connected to the bottom of the side of the screening box 2 near the feed pipe 21, and a debris discharge port 28 connected to the debris discharge pipe 27 is opened on the inner side wall of the screening box 2. The debris discharge port 28 cooperates with the debris discharge pipe 27 to facilitate the discharge of the blown straw out of the screening box 2.
[0039] A plurality of scrapers 36 distributed in a circular array are fixedly connected to the inner wall of the rotating screen drum 3. When the rotating screen drum 3 rotates, the scrapers 36 on the rotating screen drum 3 lift up the grain and straw, accelerate the separation of the grain and straw and improve the screening effect. At this time, air is blown into the rotating screen drum 3 by the fan 33, so that the lifted straw can be blown out to the outside of the screening box 2 through the impurity discharge port 28, effectively avoiding the problem that the screened straw is continuously accumulated in the rotating screen drum 3 and the screening efficiency is reduced. A cover plate 29 is hinged at one end of the feed pipe 21 located in the rotating screen drum 3, which effectively avoids the problem that part of the straw will be discharged through the feed pipe 21 when blowing to remove the straw, making it difficult to centrally process the straw and pollute the external environment.
[0040] The working process and principle of the utility model are as follows:
[0041] During use, the utility model puts the grain to be cleaned into the rotating screen drum 3 through the feed pipe 21, starts the motor 24 to drive the gear 25 to rotate, and the gear 25 cooperates with the meshing gear ring 32 to drive the rotating screen drum 3 to rotate. While the rotating screen drum 3 is rotating, the scraper 36 inside lifts the grain and straw, accelerates the separation of grain and straw, improves the screening efficiency, and achieves the effect of straw screening. Grain and dust enter the top of the sieve plate 41 in the screening box 2 4 through the guide hopper 22 and the telescopic tube 23;
[0042] At the same time, the fan 33 is started to extract external air, and blows air into the rotating screen drum 3 through the connecting pipe 34, the hollow pipe 31 and the air outlet plate 35, and blows the raised straw out to the outside of the screening box 2 through the impurity discharge port 28 and the impurity discharge pipe 27, effectively avoiding the problem that the screened straw is continuously accumulated in the rotating screen drum 3 and the screening efficiency is reduced;
[0043] Starting motor 2 16 drives cam 15 to rotate. When the raised portion of cam 15 contacts the bottom of abutment block 44, screening box 2 4 is driven to rotate upward. When the raised portion of cam 15 separates from the bottom of abutment block 44, screening box 2 4 is reset under the tensile force of spring 13. Repeating this operation makes screening box 2 4 vibrate, thereby driving the internal screen plate 41 to vibrate, thereby achieving the effect of screening dust in grain. The screened grain is discharged through discharge pipe 42, and the screened dust is discharged through ash discharge pipe 43.
[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A multi-stage screening type grain particle rotary vibrating screen, comprising a base (1), characterized in that: Two groups of support plates (11) are symmetrically welded on both sides of the top of the base (1), and a screening box (2) is fixedly connected between the tops of the two groups of support plates (11). A rotating screen drum (3) is arranged inside the screening box (2), and one side of the rotating screen drum (3) is an open end. A hollow tube (31) is rotatably connected to the center of a side of the rotating screen drum (3) away from the open side thereof, and one end of the hollow tube (31) extends through and to the outside of the screening box (2) and is fixedly connected thereto. A feed pipe (21) is fixedly connected to a side of the screening box (2) close to the open side of the rotating screen drum (3), and one end of the feed pipe (21) extends through and to the inside of the rotating screen drum (3); A screening box 2 (4) is arranged below the screening box 1 (2), a screening plate (41) is fixedly connected inside the screening box 2 (4), a material guide hopper (22) is fixedly connected to the bottom of the screening box 1 (2), a telescopic tube (23) is fixedly connected between the material guide hopper (22) and the screening box 2 (4), a discharge pipe (42) is fixedly connected to the side of the screening box 2 (4) away from the telescopic tube (23) and located on the top of the screening plate (41), and an ash discharge pipe (43) is fixedly connected to the bottom of the side of the screening box 2 (4) away from the telescopic tube (23).
2. The multi-stage screening grain particle vibrating screen according to claim 1, characterized in that: A motor (24) is bolted to the outer wall of the screening box (2) on one side close to the hollow tube (31); the output shaft head of the motor (24) extends through the screening box (2) and is fixedly connected to a gear (25); a gear ring (32) meshing with the gear (25) is fixedly connected to the outer wall of the rotating screen drum (3); a plurality of fixed shafts are fixedly connected to the inner wall of the screening box (2) on one side close to the feed pipe (21) and located below the rotating screen drum (3); each fixed shaft is rotatably connected to a roller (26) that is rollingly connected to the outer wall of the rotating screen drum (3).
3. The multi-stage screening grain particle vibrating screen according to claim 1, characterized in that: A fan (33) is bolted to the outer wall of the screening box (2) on one side close to the motor (24); a connecting pipe (34) is fixedly connected between the air outlet of the fan (33) and the hollow tube (31); an end of the hollow tube (31) away from the connecting pipe (34) is fixedly connected to an air outlet plate (35); a bottom of the screening box (2) on one side close to the feed pipe (21) is fixedly connected to a debris discharge pipe (27); and an debris discharge port (28) connected to the debris discharge pipe (27) is provided on the inner wall of the screening box (2).
4. The multi-stage screening grain particle rotary vibrating screen according to claim 1, characterized in that: A plurality of scrapers (36) distributed in a circular array are fixedly connected to the inner side wall of the rotating screen drum (3), and a cover plate (29) is hingedly connected to one end of the feed pipe (21) located inside the rotating screen drum (3).
5. The multi-stage screening grain particle vibrating screen according to claim 1, characterized in that: Two groups of support plates (12) are symmetrically welded on one side of the top of the base (1) near the discharge pipe (42), the outer walls on both sides of the screening box (4) are rotatably connected to the top of the corresponding support plates (12), two groups of springs (13) are fixedly connected between the two sides of the bottom of the screening box (4) and the base (1), a U-shaped frame (14) is welded on the top of the base (1) between the two groups of springs (13), the top of the U-shaped frame (14) is rotatably connected to a cam (15) via a rotating shaft, the bottom of the screening box (4) is fixedly connected to an abutment block (44) slidably connected to the outer wall of the cam (15), and a motor (16) for driving the cam (15) to rotate is bolted to one side of the outer wall of the U-shaped frame (14).
6. The multi-stage screening grain particle vibrating screen according to claim 1, characterized in that: The rotating screen drum (3) and the second screening box (4) are both arranged at an inclination, the opening end of the rotating screen drum (3) is higher than the end of the rotating screen drum (3) close to the hollow tube (31), and the end of the second screening box (4) close to the telescopic tube (23) is higher than the end of the discharge tube (42).
Citation Information
Cited By
Gravel particle shape and grading intelligent detection device based on machine vision
CN120479753A