Duck feed pellet screening apparatus

Abstract

The utility model relates to a duck feed granule screening equipment, effectively solved the problem that feed screening dust disperses and the screen mesh is blocked, the technical scheme that solves includes horizontal transverse outer tube, screen cylinder and inner tube, and the screen cylinder coaxial installation is in the outer tube, and the inner tube coaxial installation is in the screen cylinder, and the outer tube and the inner tube are fixed, and the screen cylinder can rotate about the axle, the lateral wall of inner tube is evenly distributed with a plurality of air holes, and the top lateral wall of outer tube is opened with an axial air groove, and the air groove is covered with a gas tank fixed on the lateral wall of outer tube, and the inner tube is connected with the gas tank between the gas pipe, and the gas pipe is equipped with a gas pump and a collection tank, and the collection tank is equipped with a dust filter screen, the utility model integrates the back blow and dust removal, realizes the back blow and dust removal function at the same time, and the structure is simplified, and the integration level is high.

Description

Technical Field

[0001] This utility model relates to the field of feed production equipment, specifically a duck feed pellet screening device. Background Technology

[0002] After feed pelleting, it is necessary to screen out fine particles and dust to ensure uniform feed particle size. The utility model patent with application number CN202222680329.X uses an inclined planar screening screen to vibrate and screen the feed. During the screening process, the vibration causes dust in the feed to escape, which is inconvenient to collect. Moreover, as screening continues, the screen will gradually become clogged, requiring the machine to be stopped for cleaning. Summary of the Invention

[0003] This invention provides a duck feed pellet screening device that effectively solves the problems of feed screening dust dispersion and screen clogging.

[0004] The technical solution includes a horizontally placed outer cylinder, a sieve cylinder, and an inner cylinder. The sieve cylinder is coaxially installed in the outer cylinder, and the inner cylinder is coaxially installed in the sieve cylinder. The outer cylinder and the inner cylinder are fixed, and the sieve cylinder can rotate around the axis. Several air holes are evenly distributed on the side wall of the inner cylinder. An axial air groove is opened on the top side wall of the outer cylinder. An air box fixed to the side wall of the outer cylinder covers the air groove. An air pipe connects the inner cylinder and the air box. An air pump and a collection box are installed on the air pipe. The collection box contains a dust filter.

[0005] The inner wall of the outer cylinder is provided with several circumferentially distributed support rollers at each end, and the outer wall of the screen cylinder is provided with an annular groove at both ends, with the support rollers placed in the groove.

[0006] The sieve cylinder consists of solid cylinder sections at both ends and screen sections connected between the solid cylinder sections.

[0007] The outer wall of the screen cylinder is fixed with a first spiral blade. When the screen cylinder rotates, the first spiral blade pushes the fine material falling into the outer cylinder to the left.

[0008] The inner wall of the screen cylinder is fixed with a second spiral blade. When the screen cylinder rotates, the second spiral blade pushes the coarse material in the screen cylinder to the right.

[0009] A toothed ring is fixed to the outer wall of the left end of the screen cylinder for driving the screen cylinder to rotate.

[0010] The outer cylinder is provided with a support frame at the bottom, and the inner cylinder is fixed to the support frame at both ends by a support rod.

[0011] This invention utilizes a circulating airflow generated by an air pump to backflush the screen cylinder from the top of the air trough. This allows for the timely removal of materials trapped inside the screen cylinder, ensuring that the screen cylinder remains permeable. Simultaneously, the inner cylinder draws in dust-laden air within the screen cylinder to collect dust, preventing dust from escaping. Furthermore, the backflush and dust removal functions are integrated into one unit, simplifying the structure and achieving a high degree of integration. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention.

[0013] Figure 2 This is the right view of the present invention.

[0014] Figure 3 This is the front sectional view of the present invention.

[0015] Figure 4 The three-dimensional representation of this utility model Figure 1 .

[0016] Figure 5 The three-dimensional representation of this utility model Figure 2 The diagram shows a cross-section of the outer and inner cylinders.

[0017] Figure 6 This is a three-dimensional view of the sieve cylinder.

[0018] Figure 7 This is a three-dimensional view of the outer cylinder. Detailed Implementation

[0019] Referring to the accompanying drawings, this utility model includes a horizontally placed outer cylinder 1, a sieve cylinder 2, and an inner cylinder 3. The sieve cylinder 2 is coaxially installed in the outer cylinder 1, and the inner cylinder 3 is coaxially installed in the sieve cylinder 2. The outer cylinder 1 and the inner cylinder 3 are fixed, while the sieve cylinder 2 can rotate around its axis. The feed to be sieved is added to the sieve cylinder 2 from the left end. During the rotation of the sieve cylinder 2, the material is sieved. Fine material falls through the sieve holes into the outer cylinder 1 and is discharged from the left end of the outer cylinder 1, while coarse material remains in the sieve cylinder 2 and is discharged from the right end of the sieve cylinder 2. The inner cylinder 3 has several air holes 4 evenly distributed on its side wall, and the top side wall of the outer cylinder 1 has an opening... An axial air trough 5 is covered by an air box 6 fixed to the side wall of the outer cylinder 1. An air pipe 7 connects the inner cylinder 3 and the air box 6. An air pump 8 and a collection box 9 are installed on the air pipe 7. The collection box 9 contains a dust filter screen 10. After the air pump 8 is started, the dust in the screen cylinder 2 is sucked into the inner cylinder 3 along with the airflow, and then blown to the air box 6 through the air pipe 7. It is then blown into the outer cylinder 1 from the air trough 5 to back-blown the top of the screen cylinder 2. When the dust-laden airflow passes through the collection cylinder, the dust is filtered and collected in the collection box 9 by the dust filter screen 10.

[0020] The inner wall of the outer cylinder 1 is provided with several circumferentially distributed support rollers 11 at each end. The outer wall of the screen cylinder 2 is provided with an annular groove 12 at both ends. The support rollers 11 are placed in the groove 12 to support and axially limit the screen cylinder 2, so that the screen cylinder 2 can rotate stably and smoothly in the outer cylinder 1.

[0021] The sieve cylinder 2 is composed of solid cylinder sections 13 at both ends and screen sections 14 connected between the solid cylinder sections 13; the wheel groove 12 is formed on the outer wall of the solid cylinder section 13.

[0022] The outer wall of the screen cylinder 2 is fixed with a first spiral blade 15. When the screen cylinder 2 rotates, the first spiral blade 15 pushes the fine material falling into the outer cylinder 1 to the left end. The left and right ends of the first spiral blade 15 are fixed to the outer wall of the solid cylinder section 13.

[0023] The inner wall of the screen cylinder 2 is fixed with a second spiral blade 16. When the screen cylinder 2 rotates, the second spiral blade 16 pushes the coarse material in the screen cylinder 2 to the right. The left and right ends of the second spiral blade 16 are fixed to the inner wall of the solid cylinder section 13.

[0024] A toothed ring 17 is fixed to the outer wall of the left end of the sieve cylinder 2 for driving the sieve cylinder 2 to rotate.

[0025] The outer cylinder 1 is provided with a support frame 18 at its bottom, and the inner cylinder 3 is fixed to the support frame 18 at both ends by a support rod 19.

[0026] When this utility model is in use, the feed to be screened is added into the screen cylinder 2 from the left end. During the rotation of the screen cylinder 2, the material is screened at the bottom of the screen cylinder 2. Fine material falls from the screen holes into the outer cylinder 1 and is pushed to the left by the first spiral blade 15 and discharged from the left end of the outer cylinder 1. Coarse material remains in the screen cylinder 2 and is pushed to the right by the second spiral blade 16 and discharged from the right end of the screen cylinder 2.

[0027] After the air pump 8 is started, the inner cylinder 3 draws in air and the air groove 5 blows air, forming a circulating airflow. The airflow blown out of the air groove 5 will back-blow the top of the screen cylinder 2, blowing out the material stuck in the screen cylinder 2, preventing the screen cylinder 2 from being continuously blocked. The dust in the screen cylinder 2 is drawn into the inner cylinder 3 along with the airflow, and then passes through the air pipe 7 and the collection cylinder. The dust is filtered and collected in the collection box 9 by the dust filter screen 10, and the filtered airflow is blown to the air groove 5.

[0028] This invention integrates backflushing and dust removal into one unit, achieving both functions while simplifying the structure and achieving a high degree of integration.

Claims

1. A duck feed pellet screening apparatus, characterized by, It includes a horizontally placed outer cylinder (1), a sieve cylinder (2) and an inner cylinder (3). The sieve cylinder (2) is coaxially installed in the outer cylinder (1), and the inner cylinder (3) is coaxially installed in the sieve cylinder (2). The outer cylinder (1) and the inner cylinder (3) are fixed, and the sieve cylinder (2) can rotate around the axis. Several air holes (4) are evenly distributed on the side wall of the inner cylinder (3). An axial air groove (5) is opened on the top side wall of the outer cylinder (1). An air box (6) fixed to the side wall of the outer cylinder (1) is covered by the air groove (5). An air pipe (7) is connected between the inner cylinder (3) and the air box (6). An air pump (8) and a collection box (9) are provided on the air pipe (7). A dust filter (10) is installed in the collection box (9).

2. A duck feed pellet screening apparatus according to claim 1, characterized in that, The inner wall of the outer cylinder (1) is provided with several circumferentially distributed support rollers (11) at each end. The outer wall of the screen cylinder (2) has an annular groove (12) at both ends, and the support rollers (11) are placed in the groove (12).

3. A duck feed pellet screening apparatus according to claim 1 or 2, characterised in that, The sieve cylinder (2) consists of solid cylinder sections (13) at both ends and screen sections (14) connected between the solid cylinder sections (13).

4. A duck feed pellet screening apparatus according to claim 1 or 2, characterized in that, The outer wall of the screen cylinder (2) is fixed with a first spiral blade (15). When the screen cylinder (2) rotates, the first spiral blade (15) pushes the fine material that falls into the outer cylinder (1) to the left.

5. A duck feed pellet screening apparatus according to claim 1 or 2, wherein, The inner wall of the screen cylinder (2) is fixed with a second spiral blade (16). When the screen cylinder (2) rotates, the second spiral blade (16) pushes the coarse material in the screen cylinder (2) to the right.

6. A duck feed pellet screening apparatus according to claim 1, wherein, A toothed ring (17) is fixed on the outer wall of the left end of the sieve cylinder (2) for driving the sieve cylinder (2) to rotate.

7. The duck feed pellet screening equipment according to claim 1, characterized in that, The outer cylinder (1) is provided with a support frame (18) at the bottom, and the inner cylinder (3) is fixed to the support frame (18) at both ends by a support rod (19).

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