CN212190067U - Plane rotary screen - Google Patents

Abstract

The utility model relates to a plane rotary screen, which comprises a frame, a screen box hung on the frame and a transmission component driving the screen box to move, wherein the screen box is provided with a feed inlet; the lower end of the sieve box is provided with a clean grain outlet; the sieve box is internally provided with sieve grids; the sieve lattice comprises a frame and a sieve plate; a plurality of support rods are vertically and fixedly arranged on the frame; the sieve plate is sleeved on the support rod and is in sliding connection with the support rod; the support rod is sleeved with a buffer spring which is abutted against the lower end face of the sieve plate; the sieve grids are divided into an upper sieve grid positioned on the upper layer and a lower sieve grid positioned on the lower layer; the upper sieve grid is provided with a first sieve pore; the lower sieve grid is provided with a second sieve mesh; the diameter of the first sieve pore is larger than that of the second sieve pore; the frame is arranged at the end part of the upper sieve grid and is arranged at the large impurity outlet; the position of the frame at the end part of the lower sieve grid is arranged at the small impurity outlet. The utility model discloses have the effect through buffer spring and make the sieve check rock from top to bottom, realize the effect to the better screening of wheat.

Description

Plane rotary screen

Technical Field

The utility model belongs to the technical field of the technique of food processing apparatus and specifically relates to a plane rotary screen is related to.

Background

At present, a plane rotary screen is a device in raw grain processing, and is mainly used for cleaning or grading raw materials in the industries of milling, feeding, rice milling, chemical industry, oil pressing and the like. Through changing the sieve piece of different apertures, can clear up the impurity in the wheat.

The utility model discloses a grant publication number is CN203635478U can be referred to current technique, and it discloses a plane rotary screen, which comprises a frame, hang the sieve box in the frame and drive the transmission of sieve box and do plane gyration vibrations, the front end of sieve box is equipped with feed inlet and inside and is equipped with the sieve check, the sieve check is upper sieve check and lower floor's sieve check, the end of upper sieve check is equipped with big miscellaneous collecting vat, the bottom of sieve box is equipped with little miscellaneous collecting vat, little miscellaneous collecting vat is located lower floor sieve check below, be equipped with in the frame and prevent the limit shake device of sieve box and the violent collision of frame.

The above prior art solutions have the following drawbacks: after wheat mixed with impurities enters from the feeding hole, the wheat on the sieve lattice is unevenly distributed, impurities in the wheat at the accumulation position cannot be sieved out, and the screening precision is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a plane gyratory sieve makes the sieve check rock from top to bottom through buffer spring's effect, realizes the better screening of wheat.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a plane rotary screen comprises a frame, a screen box hung on the frame and a transmission assembly for driving the screen box to move, wherein a feed port is formed in the screen box; the lower end of the sieve box is provided with a clean grain outlet; a sieve grid is arranged in the sieve box; the sieve lattice comprises a frame and a sieve plate; a plurality of support rods are vertically and fixedly arranged on the frame; the sieve plate is sleeved on the support rod and is in sliding connection with the support rod; the support rod is sleeved with a buffer spring which is abutted against the lower end face of the sieve plate; the sieve grids are divided into an upper sieve grid positioned on the upper layer and a lower sieve grid positioned on the lower layer; the upper sieve grid is provided with a first sieve pore; a second sieve mesh is arranged on the lower sieve grid; the diameter of the first sieve pore is larger than that of the second sieve pore; the frame is arranged at the end part of the upper sieve lattice and is arranged at a large impurity outlet; the frame is arranged at the position of the end part of the lower sieve grid and is arranged at the small impurity outlet.

By adopting the technical scheme, the wheat mixed with impurities is poured into the sieve box from the feeding hole, and then the transmission assembly drives the sieve box and the sieve grids to move; the wheat firstly falls onto the upper sieve lattice, the buffer spring is compressed downwards when the upper sieve lattice is pressed, and meanwhile, the buffer spring deforms to drive the upper sieve lattice to shake up and down along the supporting rod, so that the wheat on the upper sieve lattice can be well screened; the screened impurities move to the end part of the upper sieve lattice and are finally discharged from a large impurity outlet; the wheat after screening falls into down on the sieve check through sieve mesh one, rocks about following the lower sieve check and continues to screen, and impurity is discharged from little miscellaneous export, and the net grain of wheat bear export that finally remains is collected.

The present invention may be further configured in a preferred embodiment as: the upper end of the supporting rod is in threaded connection with a limiting block; and a buffer cushion is fixedly arranged at one end of the limiting block close to the sieve plate.

By adopting the technical scheme, the limiting block plays a limiting role and prevents the sieve grids from falling off the supporting rod; the limiting block is screwed off from the supporting rod, so that the sieve lattice is convenient to clean and replace; the blotter can prevent that the sieve check from rocking the in-process and directly striking the stopper, plays the technological effect of protection sieve check.

The present invention may be further configured in a preferred embodiment as: a suspension component is arranged on the frame; the suspension assembly comprises a suspension rod, a first universal joint fixedly arranged on the rack and a second universal joint fixedly arranged on the screen box; and two ends of the suspension rod are respectively connected with the first universal joint and the second universal joint in a rotating manner.

Through adopting above-mentioned technical scheme, through the setting of first universal joint and second universal joint, guaranteed that the sieve case can carry out steady motion under drive assembly's drive.

The present invention may be further configured in a preferred embodiment as: the transmission assembly comprises a motor fixedly arranged on the frame and an eccentric transmission wheel rotatably connected to the center of the lower end of the screen box; and a belt is rotatably connected between the eccentric transmission wheel and the motor.

By adopting the technical scheme, the front section of the screen box performs circular motion in a similar way and the middle section of the screen box performs elliptic motion in the operation process, and the position close to the outlet performs linear reciprocating motion; so screening mainly takes place at the anterior segment of sieve case, puts the central point of eccentric drive wheel setting at the sieve case, can guarantee that whole sieve case is in circular motion's state, has improved the screening precision.

The present invention may be further configured in a preferred embodiment as: the frame is provided with a buffer assembly; the buffer assembly comprises a sleeve fixedly arranged on the rack, a sliding block connected in the sleeve in a sliding manner and an extension spring fixedly arranged on the sliding block; the other end of the extension spring is fixedly connected with the sleeve; a sliding rod is vertically and fixedly arranged at one end of the sliding block, which is far away from the sleeve; the end part of the sliding rod is glued with a rubber plate.

Through adopting above-mentioned technical scheme, the in-process that transmission assembly drove the motion of sieve case, and thereby sieve case can intermittent type nature contradict the rubber slab, thereby the rubber slab drives the slide bar and removes and promote the slider, and the slider can extrude extension spring, plays certain cushioning effect under extension spring's effect, prevents that the sieve case from striking to the frame.

The present invention may be further configured in a preferred embodiment as: two first connecting rods are hinged to the sleeve; the end parts of the two first connecting rods are respectively hinged with a second connecting rod; the other end of the second connecting rod is hinged with the rubber plate; the two first connecting rods are symmetrically distributed along the length direction of the rubber plate.

Through adopting above-mentioned technical scheme, the rubber slab drives the in-process of slider compression extension spring, and first connecting rod and second connecting rod can be close to each other, have guaranteed the stationarity of rubber slab and slide bar motion process.

The present invention may be further configured in a preferred embodiment as: the lower end of the clean grain outlet is hinged with a sealing plate; flanges are vertically and fixedly arranged at two ends of the sealing plate; an adjusting screw is inserted on the flanging; the end part of the adjusting screw rod is in threaded connection with the outer end surface of the clean grain outlet.

By adopting the technical scheme, the adjusting screw is unscrewed from the flanging, and the edge sealing is turned downwards, so that the screened wheat can be collected at the clean grain outlet; when the sieve case in-process of working, fix the shrouding at the net grain export through adjusting screw, can prevent that wheat from dropping to the ground.

The present invention may be further configured in a preferred embodiment as: an observation window is arranged on the sieve box.

Through adopting above-mentioned technical scheme, through observation window, be convenient for observe the screening condition in the sieve case.

To sum up, the utility model discloses a following at least one useful technological effect:

1. pouring the wheat mixed with impurities into a sieve box from a feeding hole, and driving the sieve box and sieve grids to move by a transmission assembly; the wheat firstly falls onto the upper sieve lattice, the buffer spring is compressed downwards when the upper sieve lattice is pressed, and meanwhile, the buffer spring deforms to drive the upper sieve lattice to shake up and down along the supporting rod, so that the wheat on the upper sieve lattice can be well screened; the screened impurities move to the end part of the upper sieve lattice and are finally discharged from a large impurity outlet; the screened wheat falls onto the lower sieve lattice through the first sieve mesh, screening is continued along with the upward and downward shaking of the lower sieve lattice, impurities are discharged from the small impurity outlet, and finally the remaining wheat clean grain bear clean grain outlet is collected;

2. in the operation process of the sieve box, the front section of the sieve box makes circular motion, the middle section of the sieve box makes elliptical motion, and the position close to the outlet makes linear reciprocating motion; therefore, the screening mainly occurs at the front section of the screen box, and the eccentric transmission wheel is arranged at the central position of the screen box, so that the whole screen box can be ensured to be in a circular motion state, and the screening precision is improved;

3. the in-process that transmission assembly drove the motion of sieve case, thereby sieve case can intermittent type nature contradict the rubber slab, thereby the rubber slab drives the slide bar and removes and promote the slider, and the slider can extrude extension spring, plays certain cushioning effect under extension spring's effect, prevents that the sieve case from striking to the frame.

Drawings

FIG. 1 is a schematic view of the overall structure of a planar rotary screen in an embodiment;

FIG. 2 is a partial schematic structural view of a planar rotary screen according to an embodiment;

FIG. 3 is a schematic structural view of a highlighted screen in the embodiment;

FIG. 4 is a schematic view showing the construction of a suspension assembly according to the embodiment;

FIG. 5 is a schematic structural diagram of a salient buffer component in an embodiment.

Reference numerals: 1. a frame; 2. a screen box; 21. an observation window; 3. a transmission assembly; 31. a motor; 32. an eccentric transmission wheel; 33. a belt; 5. screening grids; 51. sieving the screen; 511. screening holes I; 52. sieving grids; 53. a frame; 531. a support bar; 532. a buffer spring; 533. a limiting block; 5331. a cushion pad; 54. a sieve plate; 6. a large impurity outlet; 7. a small impurity outlet; 8. a clean grain outlet; 9. closing the plate; 91. flanging; 911. adjusting the screw rod; 10. a suspension assembly; 101. a suspension rod; 102. a first universal joint; 103. a second universal joint; 11. a buffer assembly; 111. a sleeve; 112. a slider; 113. an extension spring; 114. a slide bar; 115. a rubber plate; 116. a first link; 117. a second link.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a plane rotary screen, including frame 1, hang the sieve case 2 that the slope set up on frame 1 and drive sieve case 2 motion's transmission assembly 3. The feed inlet has been seted up to the up end of sieve case 2, and inside is equipped with the sieve check 5 with sieve case 2 parallel arrangement to sieve check 5 divide into the lower sieve check 52 that is located the upper sieve check 51 and below of being located the top. A large impurity outlet 6 which is obliquely arranged is formed in the frame 1, and the large impurity outlet 6 is positioned at the end part of the upper sieve lattice 51; the frame 1 is also provided with a small impurity outlet 7 which is obliquely arranged at the end part of the lower sieve grid 52. The tail end of the rack 1 is fixedly provided with a clean grain outlet 8, and the clean grain outlet 8 is arranged below the small impurity outlet 7.

The transmission assembly 3 comprises a motor 31 fixedly arranged on the frame 1 and an eccentric transmission wheel 32 rotatably connected to the lower end surface of the screen box 2, wherein the eccentric transmission wheel 32 is arranged at the center of the screen box 2 and is rotatably connected with a belt 33 between the motor 31 and the eccentric transmission wheel 32. After the wheat is poured into the sieve box 2 from the feed port 4, the motor 31 is started, the belt 33 drives the eccentric transmission wheel 32 to rotate, and then the sieve box 2 and the sieve lattice 5 are driven to shake, and impurities in the wheat are sieved; the large granule impurity after the screening is discharged from big miscellaneous export 6, and the tiny particle impurity falls into on lower sieve lattice 52, discharges from miscellaneous export 7, and the wheat after the screening is finally collected from net grain export 8.

Referring to fig. 2, the end of the lower end surface of the clean grain outlet 8 is hinged with a sealing plate 9, two ends of the sealing plate 9 are vertically and fixedly provided with flanges 91 along the width direction, and after the sealing plate 9 is covered, the flanges 91 at the two ends can cover two sides of the clean grain outlet 8. In order to fix the sealing plate 9 conveniently, an adjusting screw 911 is inserted into the flanging 91, and the end part of the adjusting screw 911 is in threaded connection with the outer end surface of the clean grain outlet 8; the adjusting screw 911 is unscrewed from the flanging 91, and the sealing plate 9 is turned downwards, so that the screened wheat can be collected.

A plurality of observation window 21 have been seted up to the up end of sieve case 2, can observe the screening condition in the sieve case 2 through observation window 21, are convenient for reinforced at any time.

Referring to fig. 3, the screen 5 includes a rectangular frame 53 and a screen plate 54 provided inside the frame 53. A plurality of support rods 531 are vertically and fixedly arranged on the lower end surface of the frame 53 along the circumferential direction thereof, and the sieve plate 54 is slidably sleeved on the support rods 531. In order to improve the screening effect to the wheat on sieve check 5, the cover is equipped with buffer spring 532 between terminal surface and the bracing piece 531 under the sieve check 5, and wheat oppression sieve check 5 downstream makes buffer spring 532 compress, and buffer spring 532 resumes the in-process of deformation and can drive sieve check 5 and rock from top to bottom along bracing piece 531, and the impurity of being convenient for falls down from sieve check 5, and sieve check 5 rocks simultaneously and can also prevent piling up of wheat, has improved the screening precision.

In order to prevent the screen lattice 5 from dropping off from the support rod 531 in the vertical shaking process, the end of the support rod 531 far away from the screen lattice 5 is connected with the limiting block 533 through threads, and the lower end face of the limiting block 533 is inclined, so that the screen lattice 5 can be attached to the lower end face of the limiting block 533 in the vertical shaking process. The lower end face of the limiting block 533 is fixedly provided with the buffer pad 5331, so that the sieve lattice 5 is prevented from directly colliding with the limiting block 533 to cause damage to the sieve lattice 5.

A plurality of first sieve holes 511 are uniformly distributed on the upper sieve lattice 51, a plurality of second sieve holes are uniformly distributed on the lower sieve lattice 52, and the diameter of the first sieve holes 511 is larger than that of the second sieve holes; the wheat is roughly screened through the first screen hole 511, and then finely screened through the second screen hole, so that the purity of the screened wheat is guaranteed.

Referring to fig. 1 and 4, the screen box 2 is hung on the frame 1 by four sets of suspension assemblies 10, and the four sets of suspension assemblies 10 are respectively provided on four side surfaces of the screen box 2. In order to ensure the stability of the screen box 2 during movement, the suspension assembly 10 comprises a suspension rod 101, a first universal joint 102 fixed on the frame 1 and a second universal joint 103 fixed on the screen box 2; the suspension rod 101 is rotatably connected at both ends to a first gimbal 102 and a second gimbal 103, respectively.

Referring to fig. 2 and 5, in order to prevent the sieve box 2 from shaking violently and colliding with the frame 1, the frame 1 is further provided with a buffer assembly 11; the buffer assembly 11 comprises a sleeve 111 vertically fixed on the frame 1, a slide block 112 slidably connected in the sleeve 111, and a tension spring 113 fixed in the sleeve 111; one end of the sliding block 112 is fixedly connected with the extension spring 113, and the other end is vertically and fixedly provided with a sliding rod 114, and one end of the sliding rod 114 far away from the sliding block 112 is glued with a rubber plate 115. In the process that sieve case 2 rocked, can intermittent type nature conflict rubber slab 115, rubber slab 115 promotes slide bar 114 and then drives slider 112 motion, and extension spring 113 receives slider 112's pressure to take place elastic deformation to play the effect of buffering, prevent that sieve case 2 from striking on frame 1.

Two first connecting rods 116 symmetrically distributed are hinged to two sides of the sleeve 111, the other ends of the two first connecting rods 116 are respectively hinged to a second connecting rod 117, and one end, far away from the first connecting rod 116, of the second connecting rod 117 is hinged to the rubber plate 115. When the rubber plate 115 presses the sliding rod 114 to move, the first connecting rod 116 and the second connecting rod 117 approach each other, and the smoothness of the sliding rod 114 in the moving process is ensured.

The implementation principle of the embodiment is as follows: when in use, firstly, the wheat mixed with impurities is poured into the sieve box 2 from the feeding hole; then the motor 31 is started, and the belt 33 drives the eccentric transmission wheel 32 to rotate, so as to drive the sieve box 2 to move; the wheat entering the sieve box 2 falls into the upper sieve lattice 515 firstly, the buffer spring 532 is pressed downwards by the upper sieve lattice 515 at the moment, and then the buffer spring 532 recovers elastic deformation to pop the upper sieve lattice 515 upwards, so that the upper sieve lattice 515 is driven to shake up and down along the support rod 531, and the wheat passing through the sieve mesh I511 is accelerated; the sieve box 2 drives the upper sieve grid 515 to shake, and the screened impurities gradually move to the end part of the upper sieve grid 515 and are finally discharged from the large impurity outlet 6. The remaining wheat falls into the lower sieve grid 525, and the screening is continued by the shaking of the lower sieve grid 525, so that the impurities are discharged from the small impurity outlet 7. And finally, opening the closing plate 9, and collecting the screened wheat from the clean grain outlet 8.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A plane rotary screen comprises a frame (1), a screen box (2) hung on the frame (1) and a transmission assembly (3) driving the screen box (2) to move, wherein a feed port is formed in the screen box (2); the lower end of the sieve box (2) is provided with a clean grain outlet (8); the method is characterized in that: a sieve grid (5) is arranged in the sieve box (2); the sieve grid (5) comprises a frame (53) and a sieve plate (54); a plurality of support rods (531) are vertically and fixedly arranged on the frame (53); the sieve plate (54) is sleeved on the support rod (531) and is in sliding connection with the support rod (531); a buffer spring (532) which is abutted against the lower end face of the sieve plate (54) is sleeved on the support rod (531); the sieve grids (5) are divided into an upper sieve grid (51) positioned on the upper layer and a lower sieve grid (52) positioned on the lower layer; the upper sieve lattice (51) is provided with a first sieve pore (511); a second sieve mesh is arranged on the lower sieve grid (52); the diameter of the sieve pore I (511) is larger than that of the sieve pore II; the frame (1) is arranged at the end part of the upper sieve lattice (51) and is provided with a large impurity outlet (6); the frame (1) is arranged at the end part of the lower sieve lattice (52) and is provided with a small impurity outlet (7).

2. A planar rotary screen according to claim 1, wherein: the upper end of the support rod (531) is in threaded connection with a limiting block (533); one end of the limiting block (533) close to the sieve plate (54) is fixedly provided with a buffer cushion (5331).

3. A planar rotary screen according to claim 1, wherein: a suspension component (10) is arranged on the frame (1); the suspension assembly (10) comprises a suspension rod (101), a first universal joint (102) fixedly arranged on the frame (1) and a second universal joint (103) fixedly arranged on the screen box (2); two ends of the suspension rod (101) are respectively connected with the first universal joint (102) and the second universal joint (103) in a rotating mode.

4. A planar rotary screen according to claim 1, wherein: the transmission assembly (3) comprises a motor (31) fixedly arranged on the frame (1) and an eccentric transmission wheel (32) rotatably connected to the center of the lower end of the screen box (2); a belt (33) is rotatably connected between the eccentric transmission wheel (32) and the motor (31).

5. A planar rotary screen according to claim 1, wherein: a buffer component (11) is arranged on the frame (1); the buffer assembly (11) comprises a sleeve (111) fixedly arranged on the rack (1), a sliding block (112) connected in the sleeve (111) in a sliding manner, and an extension spring (113) fixedly arranged on the sliding block (112); the other end of the extension spring (113) is fixedly connected with the sleeve (111); a sliding rod (114) is vertically and fixedly arranged at one end of the sliding block (112) far away from the sleeve (111); the end part of the sliding rod (114) is glued with a rubber plate (115).

6. The planar rotary screen of claim 5, wherein: two first connecting rods (116) are hinged to the sleeve (111); the end parts of the two first connecting rods (116) are respectively hinged with a second connecting rod (117); the other end of the second connecting rod (117) is hinged with the rubber plate (115); the two first connecting rods (116) are symmetrically distributed along the length direction of the rubber plate (115).

7. A planar rotary screen according to claim 1, wherein: the lower end of the clean grain outlet (8) is hinged with a sealing plate (9); two ends of the sealing plate (9) are vertically and fixedly provided with flanges (91); an adjusting screw (911) is inserted into the flanging (91); the end part of the adjusting screw rod (911) is in threaded connection with the outer end surface of the clean grain outlet (8).

8. A planar rotary screen according to claim 1, wherein: an observation window (21) is arranged on the sieve box (2).

Images