Duck feed screening device

Abstract

The utility model relates to a duck feed screening device which comprises a box body, a screening plate is arranged in a cavity of the box body and can move up and down, a roller is arranged on the lower side of the screening plate, the upper end of the roller can be always attached to the lower end face of the screening plate to move and rotate around the axis at the same time, a plurality of blind holes are formed in the outer edge face of the roller in an array mode, and a sliding block is arranged in each blind hole. A through hole is formed in the middle of each sliding block, an ejector rod is arranged on the inner side of each through hole, when the outer ends of the sliding blocks stretch out of the blind holes, the ejector rods can be fixed to the innermost sides of the blind holes, when the outer ends of the sliding blocks move to the inner sides of the blind holes, the ejector rods can be unfixed, and when the ejector rods move to the lowermost ends along with the rollers, the ejector rods can move inwards to the innermost sides of the blind holes; the roller is attached to the lower end face of the sieve plate to transversely move and rotate at the same time, the sliding blocks make contact with the sieve plate in sequence so that the ejector rod can be released, the ejector rod can dredge blocking objects in sieve holes and can impact the sliding blocks at the same time, the feed screening efficiency is greatly improved, and the later cleaning difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of duck feed production, in particular to a duck feed screening device. Background Technique

[0002] In the process of duck feed production, in order to ensure the product qualification rate, it is necessary to screen feeds with different particle sizes. Most of the existing screening devices use vibrating motors to drive the vibrating screen plate, so that the feed particles generate displacement under the drive of the screen plate to complete screening. The vibration method is single and the amplitude is small, making it difficult to fully screen the feed;

[0003] The premixed feed screening equipment disclosed in the publication number CN117505246A can continuously strike the screen plate by adding a striking component under the screen plate, causing the feed to be thrown upward, thereby increasing the screening efficiency. However, both this solution and conventional screening devices have the problem of screen hole blockage. Long-term screening work is likely to cause the screen holes to be blocked by large particle feeds, and long-term accumulation is likely to form caking, which is not conducive to subsequent cleaning work. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model adopts a duck feed screening device, which solves the problems of small vibration amplitude of the screen plate and easy blockage of the screen holes in the prior art.

[0005] The technical solution it adopts is that a duck feed screening device includes a box body. A feed inlet is fixedly arranged on the left side of the upper end face of the box body. A screen plate placed with the left side higher than the right side is arranged in the cavity of the box body. The screen plate can move up and down in the box body. A plurality of screen holes are arrayed on the screen plate. A roller with a horizontal front-back axis is arranged under the screen plate. The upper end of the roller can always move while fitting the lower end face of the screen plate and rotate around the axis. A plurality of blind holes are arrayed on the outer edge surface of the roller. A slider capable of moving radially along the roller is arranged in each blind hole. A through hole is opened in the middle of each slider. A ejector rod capable of moving radially along the roller is arranged inside the through hole. The inner end of the ejector rod is connected to the blind hole through a compression spring. When the outer end of the slider extends out of the blind hole, the ejector rod can be fixed at the innermost side of the blind hole. When the outer end of the slider moves to the inner side of the blind hole, the fixing of the ejector rod can be released. When the ejector rod moves to the lowermost end along with the roller, the ejector rod can move inward to the innermost side of the blind hole.

[0006] Support plates are respectively fixed on the left and right ends of the cavity of the box body under the screen plate. Springs are fixed between the support plates and the screen plate.

[0007] Chute grooves are respectively opened on the front and back sides of the box body at the front and back ends of the roller. The chute grooves are arranged in parallel with the screen plate. A rectangular block is respectively rotatably connected to the front and back upper ends of each roller. The outer end of the rectangular block is placed in the chute groove and can slide left and right along the chute groove. Gears are respectively fixed on the parts of the front and back ends of each roller located in the chute groove. A rack is fixed on the upper end face of the chute groove. The gears are meshed with the rack.

[0008] A vertical rod is fixed to the lower end of each of the rectangular blocks, and a baffle is fixed between the two vertical rods. The upper end surface of the baffle is an arc surface that is high in the middle and low on the left and right. When the ejector rod moves to the position of the baffle, it can contact the inclined surface at the upper end of the baffle, and when it rotates to the middle position of the baffle, it can be pressed by the baffle to the innermost side of the blind hole.

[0009] An electric cylinder is fixed to the right side of the rectangular block. The electric cylinder can drive the rectangular blocks on the front and rear sides to move left and right reciprocally along the chute.

[0010] The diameter of the ejector rod is smaller than the sieve hole, and the outer diameter of the slider is larger than the sieve hole.

[0011] A sunk groove is provided on the side wall of each blind hole, and a swing rod is arranged in each sunk groove. One end of the swing rod close to the inner side of the blind hole is hinged to the sunk groove, and a torsion spring is arranged at the hinge position. The torsion spring makes the outer end of the swing rod always receive a torsion force to swing towards the inner side of the blind hole. A convex block is fixed to the middle part and the end far from the hinge axis of the swing rod respectively. A shoulder is arranged at the end of the ejector rod close to the bottom of the blind hole. When the convex block at the end extends out of the sunk groove, the convex block in the middle can block the shoulder at the innermost position of the blind hole from moving outwards.

[0012] The outer end face of the convex block is an inclined surface. When the slider and the shoulder move towards the inner side of the blind hole, the swing rod can swing to both sides to make way by pressing the inclined surface of the convex block.

[0013] A feeding hopper is fixed at the position of the feeding port.

[0014] An upper discharge port is provided on the right end face of the box body on the right side of the sieve plate, a lower discharge port is provided at the bottom of the left end face of the box body, and the lower end face of the cavity of the box body is an inclined surface that is low on the left and high on the right.

[0015] The present utility model has the following advantages compared with the prior art:

[0016] 1. While the roller moves horizontally and rotates around its own axis in contact with the lower end face of the sieve plate, the ejector rods corresponding to the sieve holes one by one can dredge the sieve holes in sequence, avoiding the blockage of the sieve holes and improving the screening efficiency;

[0017] 2. By setting the cooperation between the slider and the swing rod, the ejector rod moving to the position of the sieve hole can be instantaneously released, impacting the blockage in the sieve plate and the sieve hole, turning the feed particles upwards and efficiently cleaning the materials stuck in the sieve hole, avoiding the formation of lumps of feed particles in the sieve hole, and greatly reducing the difficulty of subsequent sieve hole cleaning;

[0018] 3. By arranging a baffle with an upper end face being circular arc-shaped under the roller, when the ejector rod rotates to the position of the baffle, it can automatically reset into the blind hole and be limited by the convex block again, ensuring the normal impact and recycling of the subsequent ejector rod. Description of the Drawings

[0019] Figure 1 This is the front view of the positioning component of the present utility model.

[0020] Figure 2 This is the front sectional view of the positioning component of the present utility model.

[0021] Figure 3 is Figure 2 the enlarged view of A in

[0022] Figure 4 This is the front sectional view of the present utility model with the drum removed.

[0023] Figure 5 This is the partial left sectional view of the box body and the drum of the present utility model.

[0024] Figure 6 This is the three-dimensional view of the swing rod and the convex block of the present utility model. Detailed implementation manners

[0025] The following further elaborates in detail on the specific implementation manners of the present utility model in conjunction with the attached drawings.

[0026] As shown by Figures 1 to 6 , the present utility model includes a box body 1. On the left side of the upper end surface of the box body 1, a feeding port 2 is fixedly arranged. Inside the cavity of the box body 1, a sieve plate 3 placed with the left side higher than the right side is arranged. The sieve plate 3 can move up and down inside the box body 1. A plurality of sieve holes 4 are arrayed on the sieve plate 3. Below the sieve plate 3, a drum 5 with its axis horizontally placed front and back is arranged. The upper end of the drum 5 can always move while fitting the lower end surface of the sieve plate 3 and rotate around the axis. A plurality of blind holes 6 are arrayed on the outer edge surface of the drum 5. Inside each blind hole 6, a slider 7 capable of moving radially along the drum 5 is arranged. A through hole 8 is opened in the middle of each slider 7. Inside the through hole 8, a ejector rod 9 capable of moving radially along the drum 5 is arranged. The inner end of the ejector rod 9 is connected to the blind hole 6 through a compression spring. When the outer end of the slider 7 extends out of the blind hole 6, the ejector rod 9 can be fixed at the innermost side of the blind hole 6. When the outer end of the slider 7 moves to the inner side of the blind hole 6, the fixing of the ejector rod 9 can be released. When the ejector rod 9 moves to the lowermost end along with the drum 5, the ejector rod 9 can move inwards to the innermost side of the blind hole 6.

[0027] On the left and right ends of the cavity of the box body 1 below the sieve plate 3, support plates 10 are respectively fixed. Springs are fixed between the support plates 10 and the sieve plate 3.

[0028] On the front and back sides of the box body 1, chutes 11 are respectively opened at the front and back ends of the drum 5. The chutes 11 are arranged in parallel with the sieve plate 3. At the front and back upper ends of each drum 5, a rectangular block 12 is respectively rotatably connected. The outer end of the rectangular block 12 is placed inside the chute 11 and can slide left and right along the chute 11. At the front and back ends of each drum 5, a gear 13 is respectively fixed on the part inside the chute 11. A rack 14 is fixed on the upper end surface of the chute 11. The gear 13 meshes with the rack 14.

[0029] A vertical rod 15 is fixed to the lower end of each of the rectangular blocks 12. A baffle 16 is fixed between the two vertical rods 15. The upper end face of the baffle 16 is an arc surface that is high in the middle and low on the left and right. When the ejector rod 9 moves to the position of the baffle 16, it can contact the upper inclined surface of the baffle 16, and when it rotates to the middle position of the baffle 16, it can be pressed by the baffle 16 to the innermost side of the blind hole 6.

[0030] An electric cylinder 17 is fixed to the right side of the rectangular block 12. The electric cylinder 17 can drive the rectangular blocks 12 on the front and back sides to reciprocate left and right along the chute 11.

[0031] The diameter of the ejector rod 9 is smaller than the sieve hole 4, and the outer diameter of the slider 7 is larger than the sieve hole 4.

[0032] A sink 18 is provided on the side wall of each blind hole 6. A swing rod 19 is provided in each sink 18. One end of the swing rod 19 close to the inner side of the blind hole 6 is hinged to the sink 18. A torsion spring is provided at the hinge position. The torsion spring makes the outer end of the swing rod 19 always receive a torsion force to swing inward to the blind hole 6. A convex block 20 is fixed to the middle and the end far from the hinge axis of the swing rod 19 respectively. A shoulder is provided at the end of the ejector rod 9 close to the bottom of the blind hole 6. When the convex block 20 at the end extends out of the sink 18, the convex block 20 in the middle can block the shoulder at the innermost side position of the blind hole 6 from moving outward.

[0033] The outer end face of the convex block 20 is an inclined surface. When the slider 7 and the shoulder move inward to the blind hole 6, the swing rod 19 can swing to both sides to give way by pressing the inclined surface of the convex block 20.

[0034] A feeding hopper 21 is fixed at the position of the feeding port 2.

[0035] An upper discharge port 22 is provided on the right end face of the box body 1 on the right side of the sieve plate 3. A lower discharge port 23 is provided at the bottom of the left end face of the box body 1. The lower end face of the cavity of the box body 1 is an inclined surface that is low on the left and high on the right.

[0036] When the utility model is in use, the feed particles to be screened are put into the feeding hopper 21, and the electric cylinder 17 is started. The electric cylinder 17 drives the roller 5 to reciprocate left and right along the chute 11 through the rectangular block 12. Since the gear 13 is always meshed with the rack 14, the roller 5 can rotate self - sufficiently during the movement, so that the blind holes 6 on its outer edge surface can continuously coincide with the sieve holes 4. When the slider 7 moves to the lower end surface of the sieve plate 3, because the outer diameter of the slider 7 is larger than the aperture of the sieve hole 4, the lower end surface of the sieve plate 3 can squeeze the slider 7 inward to move it until the slider 7 completely presses the convex block 20 outside the swing rod 19 into the sink 18. The restriction on the axis of the ejector rod 9 by the convex block 20 in the middle of the swing rod 19 is released. The ejector rod 9 can quickly pop out to the outside of the blind hole 6 under the action of the bottom compression spring. Since the diameter of the ejector rod 9 is smaller than the aperture of the sieve hole 4, the outer end of the ejector rod 9 can quickly extend into the sieve hole 4 and push the blockage in the sieve hole 4 outwards until the shoulder contacts the slider 7. The ejector rod 9 can transfer the kinetic energy to the slider 7 through the shoulder. Since the slider 7 contacts the lower end surface of the sieve plate 3, the slider 7 can continue to transfer the kinetic energy to the sieve plate 3, so that the sieve plate 3 can quickly move upwards against the spring tension and then reset downwards under the action of the spring, realizing the up - and - down vibration and turning of the sieve plate 3; After the ejector rod 9 continues to rotate with the roller 5 and moves away from the sieve hole 4 and then moves to the position of the lower baffle 16, it can be reset to the inside of the blind hole 6 under the guiding and squeezing action of the inclined surface on the upper end surface of the baffle 16.

[0037] The utility model makes the slider 7 contact with the sieve plate 3 in turn and be squeezed into the blind hole 6 by the transverse movement and self - rotation of the roller 5 fitting the lower end surface of the sieve plate 3, thereby releasing the ejector rod 9. The ejector rod 9 can dredge the blockage in the sieve hole 4 and can also impact the slider 7 at the same time, so that the sieve plate 3 vibrates up and down under the action of the spring, realizing the turning of the material, avoiding the blockage of the sieve hole 4 and increasing the amplitude of the sieve plate 3 at the same time, greatly improving the feed screening efficiency and reducing the later cleaning difficulty.

Claims

1. A duck feed screening device, comprising a box body (1), characterized in that, On the left side of the upper end face of the described box body (1), a feeding port (2) is fixedly arranged. Inside the cavity of the box body (1), a sieve plate (3) placed with the left side higher and the right side lower is arranged. The sieve plate (3) can move up and down in the box body (1). A plurality of sieve holes (4) are arrayed on the sieve plate (3). Below the sieve plate (3), a roller (5) with a horizontal front-back axis is arranged. The upper end of the roller (5) can always move while fitting the lower end face of the sieve plate (3) and rotate around the axis. A plurality of blind holes (6) are arrayed on the outer edge surface of the roller (5). In each blind hole (6), a slider (7) capable of moving radially along the roller (5) is arranged. A through hole (8) is opened in the middle of each slider (7). Inside the through hole (8), a ejector rod (9) capable of moving radially along the roller (5) is arranged. The inner end of the ejector rod (9) is connected to the blind hole (6) through a compression spring. When the outer end of the slider (7) extends out of the blind hole (6), the ejector rod (9) can be fixed to the innermost side of the blind hole (6). When the outer end of the slider (7) moves to the inner side of the blind hole (6), the fixing of the ejector rod (9) can be released. When the ejector rod (9) moves to the lowermost end along with the roller (5), the ejector rod (9) can move inwards to the innermost side of the blind hole (6).

2. The duck feed screening device according to claim 1, characterized in that, On the left and right ends of the cavity of the described box body (1) below the sieve plate (3), support plates (10) are respectively fixed. Springs are fixed between the support plates (10) and the sieve plate (3).

3. The duck feed screening device according to claim 1, wherein, On the front and back sides of the described box body (1), chutes (11) are respectively opened at the front and back ends of the roller (5). The chutes (11) are arranged in parallel with the sieve plate (3). At the front and back upper ends of each roller (5), a rectangular block (12) is respectively rotatably connected. The outer end of the rectangular block (12) is placed in the chute (11) and can slide left and right along the chute (11). At the front and back ends of each roller (5) in the chute (11), a gear (13) is respectively fixed. On the upper end face of the chute (11), a rack (14) is fixed. The gear (13) meshes with the rack (14).

4. The duck feed screening device according to claim 3, characterized in that, At the lower end of each of the described rectangular blocks (12), a vertical rod (15) is fixed. A baffle (16) is fixed between the two vertical rods (15). The upper end face of the baffle (16) is an arc surface with the middle higher and the left and right lower. When the ejector rod (9) moves to the position of the baffle (16), it can contact the upper inclined surface of the baffle (16) and can be pressed to the innermost side of the blind hole (6) when rotating to the middle position of the baffle (16).

5. A duck feed screening device according to claim 4, characterized in that, On the right side of the described rectangular block (12), an electric cylinder (17) is fixed. The electric cylinder (17) can drive the rectangular blocks (12) on the front and back sides to reciprocate left and right along the chute (11).

6. The duck feed screening device according to claim 1, characterized in that, The diameter of the ejector rod (9) is smaller than that of the sieve hole (4), and the outer diameter of the slider (7) is larger than that of the sieve hole (4).

7. A duck feed screening device according to claim 1, characterized in that, A sink groove (18) is provided on the side wall of each of the blind holes (6). A swing rod (19) is arranged in each sink groove (18). One end of the swing rod (19) close to the inner side of the blind hole (6) is hinged to the sink groove (18), and a torsion spring is arranged at the hinged position. The torsion spring makes the outer end of the swing rod (19) always receive a torsion force to swing towards the inner side of the blind hole (6). A convex block (20) is fixed at the middle part and the end far from the hinge axis of the swing rod (19) respectively. A shoulder is arranged at one end of the ejector rod (9) close to the bottom of the blind hole (6). When the convex block (20) at the end extends out of the sink groove (18), the convex block (20) at the middle part can block the shoulder at the innermost position of the blind hole (6) from moving outwards.

8. A duck feed screening device according to claim 7, characterized in that, The outer end face of the convex block (20) is an inclined surface. When the slider (7) and the shoulder move towards the inner side of the blind hole (6), the swing rod (19) can swing to both sides to make way by pressing the inclined surface of the convex block (20).

9. The duck feed screening device according to claim 1, characterized in that, A blanking hopper (21) is fixed at the position of the feed inlet (2).

10. A duck feed screening device according to claim 1, characterized in that, An upper discharge port (22) is provided on the right end face of the box body (1) on the right side of the sieve plate (3), a lower discharge port (23) is provided at the bottom of the left end face of the box body (1), and the lower end face of the cavity of the box body (1) is an inclined surface with the left side lower and the right side higher.

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