Dust-free feeding spin vibration screen

Abstract

The utility model relates to the technical field of spin vibration screens, in particular to a dust-free feeding spin vibration screen which comprises a screening box, an obliquely-arranged rotating rod is rotationally connected into the screening box, a coarse screening barrel is fixedly connected to the outer side wall of the rotating rod through a first connecting rod, and a fine screening barrel is fixedly arranged on the outer side of the coarse screening barrel in a sleeved mode through a second connecting rod. A feeding box is welded to the outer wall of one side of the screening box through a fixing frame. The feeding box is matched with the exhaust fan, so that grains are continuously conveyed into the screening box to be screened in a sealed environment, and the problem that dust generated in the feeding and screening process is easy to fly around through a feeding pipe, an impurity discharging pipe and a discharging pipe is solved; and the coarse screening barrel and the fine screening barrel are driven by the rotating rod to do reciprocating vibration while rotating, on one hand, the screening efficiency is improved, on the other hand, when the blocked screen holes rotate to the top, blocked materials are rapidly discharged, and the anti-blocking effect of the screen holes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary vibrating screens, in particular to a dust-free feeding 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 initial screening process can be completed. After the collection is completed, it needs to be screened again through a rotary vibrating screen to further remove the remaining straw and dust in the grain before the grain can be stored.

[0003] However, when the existing common rotary vibrating screen is used to screen grain, the grain is directly fed from the feed port of the rotary vibrating screen with an open structure. During the feeding process, some dust inside the grain is easily discharged from the feed port, and during the screening process, the screened dust is easily discharged from the discharge port. It is difficult to perform feeding and screening in a sealed environment, which makes it very easy to pollute the surrounding working environment during screening.

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a dust-free feeding rotary vibrating screen to solve the technical defects mentioned above. The utility model cooperates with the feeding box and the exhaust fan to realize continuous and uninterrupted conveying of grain to the screening box for screening in a sealed environment, thereby avoiding the problem that dust generated during the feeding and screening process is easily scattered through the feeding pipe, the impurity discharge pipe and the discharge pipe; and the coarse screening cylinder and the fine screening cylinder are driven to rotate by the rotating rod, while the cam and the resistance block drive the screening cylinder to vibrate reciprocatingly, which improves the screening efficiency on the one hand, and facilitates the rapid discharge of the blocked material when the blocked screen hole rotates to the top on the other hand, thereby improving the anti-blocking effect of the screen hole.

[0006] This is achieved through the following technical solutions:

[0007] A dust-free feeding rotary vibrating screen comprises a screening box, wherein an obliquely arranged rotating rod is rotatably connected in the screening box, a coarse screening cylinder is fixedly connected to the outer wall of the rotating rod via a connecting rod 1, a fine screening cylinder is fixedly sleeved on the outer side of the coarse screening cylinder via a connecting rod 2, the fine screening cylinder, the coarse screening cylinder and the rotating rod are all coaxially arranged, and a feeding box is welded to the outer wall of one side of the screening box via a fixing frame;

[0008] A feeding cavity is provided at the bottom of the feeding box, a rotating rod is rotatably connected to the feeding box, a spiral blade is fixedly connected to the rotating rod, a feeding pipe connected to the screening box is fixedly connected to one side of the feeding cavity, and the free end of the feeding pipe is located inside the coarse screening cylinder, a feeding port is provided on the top of the feeding box on the side away from the feeding pipe, a cover plate is hinged on the feeding port, and a conveying motor for driving the rotating rod to rotate is bolted to the feeding box.

[0009] Preferably, through grooves are provided on the inner walls on both sides of the screening box at positions corresponding to the rotating rods, and the screening box is provided with movable grooves connected to the corresponding through grooves, and movable blocks rotatably connected to the rotating rods are slidably connected in the movable grooves, and a support is welded on the outer wall of the movable block on the side away from the feeding box, and a driving motor for driving the rotating rod to rotate is bolted to the support.

[0010] Preferably, springs are fixedly connected between the two sides of the movable block and the corresponding inner walls of the movable groove, a resistance block is fixedly connected to one side of the through groove on the outer wall of the screening box, and a cam slidably connected to the corresponding resistance block is fixedly connected to the rotating rod.

[0011] Preferably, the rotating rod is located at one end of the feeding pipe higher than the rotating rod at one end of the driving motor, the inner wall of the coarse screening cylinder is fixedly connected with a spiral blade 2, and the inner wall of the fine screening cylinder is fixedly connected with a spiral blade 3.

[0012] Preferably, a debris removal pipe connected to the interior of the coarse screening cylinder is fixedly connected on the outer wall of the screening box on one side of the feeding pipe, and a discharge pipe connected to the interior of the fine screening cylinder is fixedly connected on the outer wall of the screening box on one side of the driving motor, and baffles are hinged on the top of the free ends of the debris removal pipe and the discharge pipe.

[0013] Preferably, the bottom of the screening box is fixedly connected to a collecting box, a dust suction pipe is fixedly connected between the top of one side of the collecting box and the bottom of the screening box, a connecting pipe is fixedly connected to the side of the collecting box away from the dust suction pipe, the bottom of the screening box is bolted to an exhaust fan, the air intake port of the exhaust fan is fixedly connected to the free end of the connecting pipe, and a filter is fixedly connected to one side of the collecting box close to the connecting pipe.

[0014] The beneficial effects of the utility model are as follows:

[0015] (1) The utility model provides a dust-free feeding rotary vibrating screen. During use, the spiral blades rotate in conjunction with the feeding pipe to realize that the grain in the feeding box is continuously and uninterruptedly transported to the screening box for screening in a sealed environment, effectively solving the problem in the prior art that dust in the grain will fly around during the feeding process, and the exhaust fan and the collection box cooperate with the baffles at the ends of the impurity discharge pipe and the discharge pipe to prevent the dust generated during the screening process from flying around through the impurity discharge pipe and the discharge pipe during the screening process.

[0016] (2) The vibrating screen of the utility model can screen grains multiple times through the coarse screening cylinder and the fine screening cylinder outside it. The rotating rod drives the screening cylinder to rotate, and the cam and the abutment block drive the screening cylinder to vibrate back and forth on the horizontal plane. On the one hand, the screening efficiency is improved, and on the other hand, when the blocked screen hole rotates to the top, the blocked material can be quickly discharged, thereby improving the anti-blocking effect of the screen hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings;

[0018] Figure 1 It is a structural stereogram of the utility model;

[0019] Figure 2 It is a partial sectional view of the front side of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the coarse screening cylinder and the fine screening cylinder of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the feeding box of the utility model;

[0022] Figure 5 It is a partial top view of the utility model;

[0023] Figure 6 It is a partial cutaway schematic diagram of the screening box of the utility model.

[0024] Legend:

[0025] 1. Screening box; 11. Through slot; 12. Movable slot; 13. Resistance block; 14. Discharge pipe; 15. Discharge pipe; 16. Collection box; 17. Dust suction pipe; 18. Connecting pipe; 19. Exhaust fan; 110. Filter;

[0026] 2. Rotating rod; 21. Connecting rod 1; 22. Coarse screening cylinder; 23. Connecting rod 2; 24. Fine screening cylinder; 25. Movable block; 26. Support; 27. Driving motor; 28. Spring; 29. ​​Cam; 210. Spiral blade 2; 211. Spiral blade 3;

[0027] 3. Feed box; 31. Fixed frame; 32. Feeding chamber; 33. Rotating rod; 34. Spiral blade 1; 35. Feeding pipe; 36. Cover plate; 37. Conveying motor. 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] In view of the problem that when the existing common rotary vibrating screen is used to screen grain, some dust is easily discharged from the feed port and the discharge port during the feeding and screening process, causing pollution to the surrounding working environment, the following solutions can be used to solve the problem:

[0030] See also Figure 1-Figure 6 As shown, a dust-free feeding rotary vibrating screen comprises a screening box 1, in which a rotating rod 2 arranged obliquely is rotatably connected, and the screening cylinder is installed obliquely through the tilting setting of the rotating rod 2, and a coarse screening cylinder 22 is fixedly connected to the outer wall of the rotating rod 2 through a connecting rod 1 21, so as to screen the residual straw and the grain in the grain, and a fine screening cylinder 24 is fixedly sleeved on the outer side of the coarse screening cylinder 22 through a connecting rod 2 23, so as to screen the dust and the grain in the grain, and the fine screening cylinder 24, the coarse screening cylinder 22 and the rotating rod 2 are all coaxially arranged, and a feeding box 3 is welded on the outer wall of one side of the screening box 1 through a fixing frame 31, so as to store the grain to be screened and continuously feed the material into the screening box 1;

[0031] A feeding chamber 32 is provided at the bottom of the feeding box 3 for cooperating with a spiral blade 34 to form a conveying channel. A rotating rod 33 is rotatably connected to the feeding box 3, on which the spiral blade 34 is installed and driven to rotate. The spiral blade 34 is fixedly connected to the rotating rod 33. A feeding pipe 35 connected to the screening box 1 is fixedly connected to one side of the feeding chamber 32, and the free end of the feeding pipe 35 is located inside the coarse screening cylinder 22. A sealed conveying channel is formed between the feeding box 3 and the inside of the coarse screening cylinder 22 through the feeding pipe 35. A feeding port is provided on the top of the feeding box 3 on the side away from the feeding pipe 35. A cover plate 36 is hinged on the feeding port. The cover plate 36 is arranged to prevent the problem that part of the dust rises and flows due to the movement of part of the grain in the feeding box 3 during the feeding process, and then is discharged from the feeding box 3 through the feeding port. A conveying motor 37 for driving the rotating rod 33 to rotate is bolted to the feeding box 3.

[0032] Through grooves 11 are provided on the inner walls on both sides of the screening box 1 at positions corresponding to the rotating rod 2. The through grooves 11 are used to extend the two ends of the rotating rod 2 to the outside of the screening box 1 and provide space for the rotating rod 2 to move in the horizontal plane. The screening box 1 is provided with movable grooves 12 connected to the corresponding through grooves 11. A movable block 25 rotatably connected to the rotating rod 2 is slidably connected in the movable groove 12. The rotating rod 2 can be rotated without affecting its reciprocating motion in the horizontal plane through the cooperation between the movable groove 12 and the movable block 25. A support 26 is welded on the outer wall of the movable block 25 away from the feeding box 3, and a driving motor 27 for driving the rotating rod 2 to rotate is bolted to the support 26.

[0033] Springs 28 are fixedly connected between the two sides of the movable block 25 and the corresponding inner walls of the movable groove 12. The springs 28 on both sides are used to ensure the resetting effect of the movable block 25 in the movable groove 12. A resistance block 13 is fixedly connected to the outer wall of the screening box 1 on one side of the through groove 11. A cam 29 is fixedly connected to the rotating rod 2 and is slidably connected to the corresponding resistance block 13. The raised part of the cam 29 contacts and separates from the resistance block 13 on one side, and the resetting effect of the spring 28 on the movable block 25 is cooperated to realize the reciprocating motion of the movable block 25, thereby realizing the effect of reciprocating vibration of the screening drum while rotating.

[0034] One end of the rotating rod 2 located at the feeding pipe 35 is higher than the other end of the rotating rod 2 located at the driving motor 27. When the grain enters the coarse screening drum 22 through the feeding pipe 35, the grain moves in the inclined coarse screening drum 22 due to its own gravity, thereby increasing the contact area between the grain and the coarse screening drum 22, thereby improving the screening effect. A spiral blade 210 is fixedly connected to the inner wall of the coarse screening drum 22. The set spiral blade 210 drives the grain and the residual straw and large particles of impurities to move toward the feeding pipe 35 under the rotation of the coarse screening drum 22, thereby further increasing the contact area between the grain and the coarse screening drum 22, and discharges the residual straw and large particles of impurities through the impurity discharge pipe 14. A spiral blade 3 211 is fixedly connected to the inner wall of the fine screening drum 24. The set spiral blade 3 211 drives the grain to move toward the feeding pipe 35 under the rotation of the fine screening drum 24, thereby further increasing the contact area between the grain and the fine screening drum 24, thereby improving the effect of removing dust and fine particles of impurities.

[0035] A discharge pipe 14 connected to the interior of the coarse screening drum 22 is fixedly connected on the outer wall of the screening box 1 on one side of the feeding pipe 35, and is used to discharge the residual straw and large particles of impurities screened by the coarse screening drum 22 out of the screening box 1; a discharge pipe 15 connected to the interior of the fine screening drum 24 is fixedly connected on the outer wall of the screening box 1 on one side of the driving motor 27, and is used to discharge the screened grain out of the screening box 1; baffles are hinged on the top of the free ends of the discharge pipe 14 and the discharge pipe 15, which are used to prevent the screened dust from flying around through the discharge pipe 14 and the discharge pipe 15 during the screening process.

[0036] A collecting box 16 is fixedly connected to the bottom of the screening box 1, a dust suction pipe 17 is fixedly connected between the top of one side of the collecting box 16 and the bottom of the screening box 1, a connecting pipe 18 is fixedly connected to the side of the collecting box 16 away from the dust suction pipe 17, an exhaust fan 19 is bolted to the bottom of the screening box 1, and the air intake port of the exhaust fan 19 is fixedly connected to the free end of the connecting pipe 18. The dust in the screening box 1 is extracted and collected in the collecting box 16 by the exhaust fan 19, the connecting pipe 18, the collecting box 16 and the dust suction pipe 17. A filter screen 110 is fixedly connected to one side of the collecting box 16 close to the connecting pipe 18 to prevent the extracted dust from being discharged with the discharge of air.

[0037] The working process and principle of the utility model are as follows:

[0038] During use, the utility model fills the feeding box 3 with the grain to be screened, closes the cover plate 36, forms a sealed conveying environment, starts the conveying motor 37 and drives the spiral blade 34 to rotate through the rotating rod 33, and the spiral blade 34 conveys the grain entering the feeding cavity 32, and enters the coarse screening cylinder 22 in the screening box 1 through the feeding pipe 35 to screen the grain from the residual straw and large particles of impurities;

[0039] The grains entering the coarse screening drum 22 are moved to the lower part of the coarse screening drum 22 by their own gravity, thereby increasing the contact area between the grains and the coarse screening drum 22, thereby improving the screening effect. The driving motor 27 is started to drive the rotating rod 2 to rotate, and the rotating rod 2 drives the coarse screening drum 22 and the fine screening drum 24 to rotate through the connecting rod 1 21 and the connecting rod 2 23. During the rotation process, the spiral blade 210 in the coarse screening drum 22 drives the grains and the remaining straw and large particles of impurities to be lifted and driven to move toward the feeding pipe 35, thereby further increasing the contact area between the grains and the coarse screening drum 22 and the screening efficiency, and the remaining straw and large particles of impurities are discharged through the impurity discharge pipe 14;

[0040] The grain and dust screened by the coarse screening drum 22 enter the fine screening drum 24. The spiral blade 3 211 in the fine screening drum 24 drives the grain to be lifted and move toward the feeding pipe 35 during the rotation process, thereby increasing the contact area between the grain and the fine screening drum 24 and the secondary screening efficiency, and improving the effect of screening dust and fine particle impurities. In the dust removal process, the grain moves to the lower part of the fine screening drum 24 due to its own gravity and is discharged through the discharge pipe 15.

[0041] During screening, the cam 29 on the rotating rod 2 is in constant contact with and separation from the abutment block 13 on one side thereof, and the resetting effect of the spring 28 on the movable block 25 is cooperated to realize the reciprocating motion of the movable block 25, thereby realizing the reciprocating vibration of the screening drum while rotating, which further improves the screening efficiency on the one hand, and on the other hand, when the blocked screen hole rotates to the top, it is easy to quickly discharge the blocked material in cooperation with the reciprocating vibration of the screening drum, thereby improving the anti-blocking effect of the screen hole;

[0042] During screening, since the cover plate 36 blocks the feed port, the baffle blocks the corresponding discharge pipe 15 and the impurity discharge pipe 14 due to its own gravity, thereby preventing the dust generated during the screening process from being discharged through the feed port, the discharge pipe 15 and the impurity discharge pipe 14. The exhaust fan 19 is started, and the connecting pipe 18, the collection box 16 and the dust suction pipe 17 are used to extract the dust in the screening box 1. The extracted dust is blocked by the filter 110 and prevented from being discharged along with the air.

[0043] 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 dust-free feeding rotary vibrating screen, comprising a screening box (1), characterized in that: The screening box (1) is rotatably connected to a rotating rod (2) arranged obliquely, and a coarse screening cylinder (22) is fixedly connected to the outer wall of the rotating rod (2) via a first connecting rod (21), and a fine screening cylinder (24) is fixedly sleeved on the outer side of the coarse screening cylinder (22) via a second connecting rod (23), and the fine screening cylinder (24), the coarse screening cylinder (22) and the rotating rod (2) are all arranged coaxially, and a feeding box (3) is welded to one side outer wall of the screening box (1) via a fixing frame (31); A feeding cavity (32) is provided at the bottom of the feeding box (3), a rotating rod (33) is rotatably connected to the feeding box (3), a spiral blade (34) is fixedly connected to the rotating rod (33), a feeding pipe (35) connected to the screening box (1) is fixedly connected to one side of the feeding cavity (32), and the free end of the feeding pipe (35) is located inside the coarse screening cylinder (22), a feeding port is provided at the top of the feeding box (3) away from the feeding pipe (35), a cover plate (36) is hinged on the feeding port, and a conveying motor (37) for driving the rotating rod (33) to rotate is bolted to the feeding box (3).

2. A dust-free feeding rotary vibrating screen according to claim 1, characterized in that: Through slots (11) are provided on the inner walls of both sides of the screening box (1) at positions corresponding to the rotating rods (2); a movable slot (12) connected to the corresponding through slots (11) is provided on the screening box (1); a movable block (25) rotatably connected to the rotating rod (2) is slidably connected in the movable slot (12); a support (26) is welded on the outer wall of the movable block (25) on the side away from the feeding box (3); a driving motor (27) for driving the rotating rod (2) to rotate is bolted to the support (26).

3. The dust-free feeding rotary vibrating screen according to claim 2, characterized in that: Springs (28) are fixedly connected between the two sides of the movable block (25) and the inner walls of the corresponding movable grooves (12); a resistance block (13) is fixedly connected to the outer wall of the screening box (1) at one side of the through groove (11); and a cam (29) is fixedly connected to the rotating rod (2) and is slidably connected to the corresponding resistance block (13).

4. The dust-free feeding rotary vibrating screen according to claim 2, characterized in that: The end of the rotating rod (2) located on the feeding pipe (35) is higher than the end of the rotating rod (2) located on the driving motor (27); the inner wall of the coarse screening cylinder (22) is fixedly connected with a spiral blade 2 (210); the inner wall of the fine screening cylinder (24) is fixedly connected with a spiral blade 3 (211).

5. The dust-free feeding rotary vibrating screen according to claim 4, characterized in that: A waste pipe (14) communicating with the interior of a coarse screening cylinder (22) is fixedly connected to the outer wall of the screening box (1) on one side of the feeding pipe (35), and a discharge pipe (15) communicating with the interior of a fine screening cylinder (24) is fixedly connected to the outer wall of the screening box (1) on one side of the driving motor (27), and baffles are hinged at the tops of the free ends of the waste pipe (14) and the discharge pipe (15).

6. The dust-free feeding rotary vibrating screen according to claim 1, characterized in that: The bottom of the screening box (1) is fixedly connected to a collecting box (16); a dust suction pipe (17) is fixedly connected between the top of one side of the collecting box (16) and the bottom of the screening box (1); a connecting pipe (18) is fixedly connected to the side of the collecting box (16) away from the dust suction pipe (17); an exhaust fan (19) is bolted to the bottom of the screening box (1); an air intake port of the exhaust fan (19) is fixedly connected to the free end of the connecting pipe (18); and a filter screen (110) is fixedly connected to the side of the collecting box (16) close to the connecting pipe (18).

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