A feed processing ring die pelletizing apparatus

Abstract

The application discloses a feed processing ring die granulating device, which comprises a feeding worm, a conditioning cylinder and a granulating cylinder which are sequentially connected on a rack, a ring die and a cutting blade are arranged in the granulating cylinder, a compression roller which rotates relative to the ring die is arranged in the ring die, the ring die comprises a die sleeve as a side wall and a centrifugal bottom plate which seals the bottom, the die sleeve and the centrifugal bottom plate are rotationally and sealingly connected, the rotation speed of the centrifugal bottom plate is greater than that of the die sleeve, and the rotation direction of the centrifugal bottom plate is opposite to that of the die sleeve. The feed processing ring die granulating device is used for granulating feed powder, the side wall and the bottom plate of the ring die are respectively controlled, the bottom plate is used as a centrifugal part of the feed powder and is used for realizing rapid and sufficient wall sticking of the feed powder, and the side wall is used as a compression granule efficiency control part, so that the working efficiency of the two can be maintained at the same time, and high efficiency and high quality of the ring die granulation are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feed granulation processing, in particular to a feed processing ring die granulator. BACKGROUND

[0002] The working principle of the ring die granulator is that the material which has been conditioned and stirred enters the rotating material basin through the feeding port, and due to the centrifugal force, the material is continuously thrown to the inner wall of the ring die to form a uniform annular material layer, and then the material layer is extruded by the strong extrusion of the two relatively rotating parts of the ring die and the compression roller, and then the material layer is extruded in a cylindrical shape from the ring die and cut into uniform length particles by the cutting knife, and then the particles are discharged outside the machine, thereby completing the entire granulation process.

[0003] In the above granulation process, the speed of the ring die affects the thickness of the material layer in the extrusion zone and the time of the material passing through the die hole, and further affects the output and particle quality of the granulator. When the linear speed of the ring die is high, the output efficiency is high, but the material layer in the extrusion zone is thin, the particles produced are soft, the axial material layer is unevenly distributed, and the length of the extruded particles is uneven; when the linear speed of the ring die is low, the material layer in the extrusion zone is thick, although the quality of the produced particles is good, but the output efficiency is not high. SUMMARY

[0004] The purpose of the present application is to combine the beneficial effects of the linear speed of the ring die of the ring die granulator in the prior art on the quality and efficiency of granulation, and to propose a feed processing ring die granulator that simultaneously improves the efficiency and quality of feed granulation.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A feed processing ring die granulator, comprising a feeding dragon, a conditioning cylinder and a granulation cylinder located on a machine frame, wherein the feeding end of the feeding dragon is provided with a feed bin, the discharge end of the feeding dragon is in communication with the feeding end of the conditioning cylinder, and the discharge end of the conditioning cylinder is in communication with the feeding end of the granulation cylinder. The feeding dragon is used to send the feed powder in the feed bin into the conditioning cylinder, the conditioning cylinder is used to condition the feed powder, and the conditioned feed powder enters the interior of the granulation cylinder for granulation treatment.

[0007] The interior of the above-mentioned granulation cylinder is provided with a coaxial ring die, and the side wall of the ring die is provided with a material hole pointing to the axis. The interior of the ring die is provided with a compression roller rotating relative to the ring die, and the compression roller is used to extrude the material layer of the side wall of the ring die, so that the material layer is extruded from the material hole of the side wall of the ring die to form a material strip. The granulation cylinder is provided with a cutting blade outside the ring die, and the cutting blade is used to cut the material strip to obtain feed particles, and the feed particles are discharged from the discharge port at the bottom of the granulation cylinder. In the present application, the ring die comprises a die sleeve as a side wall and a centrifugal bottom plate for sealing the bottom, and the die sleeve and the centrifugal bottom plate are rotationally sealed and connected.

[0008] When the feed powder is granulated, the feed powder contacts the centrifugal bottom plate first when entering the ring die, and the feed powder generates centrifugal effect under the rotating movement of the centrifugal bottom plate, and the feed powder is accumulated to the edge of the centrifugal bottom plate and extends to the inner wall of the die shell, and a material layer can be formed on the inner wall of the die shell. In the present application, the rotating speed of the centrifugal bottom plate is greater than the rotating speed of the die shell, and the high-speed rotating centrifugal bottom plate can accelerate the accumulation speed of the feed powder on the inner wall of the die shell, so that a relatively thick material layer is formed on the inner wall of the die shell, and the die shell can rotate rapidly, thereby improving the moving speed of the die shell relative to the compression roller and improving the granulation efficiency.

[0009] The center rotating shaft is coaxial with the granulating cylinder, the upper end of the center rotating shaft is fixedly connected with a granulating motor, and the lower part of the center rotating shaft is fixedly connected with the centrifugal bottom plate, and the center rotating shaft can drive the centrifugal bottom plate to rotate.

[0010] As a preferred solution, the lower part of the center rotating shaft is rotatably sleeved with an auxiliary gear. The bottom surface of the centrifugal bottom plate is provided with an intermediate gear, and the intermediate gear is rotatably connected with a fixed shaft, and the fixed shaft is fixedly connected with the granulating cylinder. A support frame is fixedly arranged in the granulating cylinder, and the support frame is rotatably connected with the granulating cylinder. The upper part of the die shell is rotatably connected with the support frame, and the lower part of the die shell is fixedly connected with a gear ring. The auxiliary gear and the gear ring are respectively meshed with the center gear, and the center gear is located between the auxiliary gear and the gear ring. The centrifugal bottom plate can drive the auxiliary gear to rotate, the auxiliary gear can drive the gear ring to rotate through the intermediate gear, and then the rotating movement of the die shell is realized.

[0011] In the above process, the rotating direction of the centrifugal bottom plate is opposite to the rotating direction of the die shell, and when the rotating directions of the centrifugal bottom plate and the die shell are opposite, the feed powder accumulated at the edge of the centrifugal bottom plate is affected by the friction force in two directions, and the flowability of the feed powder is better, which is beneficial to extending to the inner wall of the die shell.

[0012] Preferably, a rotating frame is fixedly sleeved on the center rotating shaft, a connecting shaft is fixedly arranged on the rotating frame, and the compression roller is rotatably sleeved on the connecting shaft. The center rotating shaft can drive the rotating frame to rotate, the rotating frame can drive the compression roller to rotate relative to the die shell through the connecting shaft, and the relative movement and extrusion of the compression roller to the material layer on the inner wall of the die shell are realized. The surface of the compression roller is provided with teeth, which facilitates the compression roller to produce autorotation under the rotation of the rotating frame, and simultaneously stably extrudes the material layer on the inner wall of the die shell.

[0013] The bottom of the support frame is fixedly provided with a cutting blade, and the support frame is fixedly connected with the rotating frame, so that the relative position between the compression roller and the cutting blade is fixed, and uniform length of the feed particles can be obtained under the condition that the rotating speed of the die shell is unchanged.

[0014] Further, the negative pressure pipe is arranged below the ring die, an extension shaft is arranged in the negative pressure pipe, and the extension shaft and the negative pressure pipe are coaxially arranged with the central rotating shaft respectively. The upper end of the extension shaft is fixedly connected to the lower end of the central rotating shaft, and a negative pressure fan is arranged at the lower end of the extension shaft, so that the central rotating shaft can drive the negative pressure fan to rotate, so that negative pressure is generated in the negative pressure pipe. The side surface of the negative pressure pipe is in communication with the outer space of the ring die, and the bottom of the negative pressure pipe is in communication with the outside of the granulating cylinder, so that the exhaust of the granulating cylinder can be accelerated, the exhaust of water vapor and dust can be accelerated, the dust in the feed pellet collecting device can be reduced, and the exhausted dust can be absorbed by other collecting devices.

[0015] Preferably, the upper part of the granulating cylinder is provided with a feeding ring coaxial with the centrifugal bottom plate, the feeding end of the feeding ring is arranged in communication with the discharging end of the conditioning cylinder through a feeding pipe, the discharging end of the feeding ring is provided with a feeding pipe, the feeding pipe is fixedly connected to the rotating frame, and the feeding pipe is rotatably connected to the feeding ring through the annular bottom plate of the feeding ring. When the central rotating shaft drives the feeding pipe to rotate, the annular bottom plate of the feeding ring can rotate relative to the feeding ring, so that the normal feeding of the feeding pipe can be maintained.

[0016] The present application has the following advantages: the present feed processing ring die granulating equipment is used for feed powder granulation, the side wall and the bottom plate of the ring die are controlled respectively, the bottom plate is used as a centrifugal part for feed powder, so that the rapid and sufficient wall sticking of the feed powder can be realized, the side wall is used as a pressing particle efficiency control part, the working efficiency of the two can be maintained at the same time, and high efficiency and high quality of the ring die granulation can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of the present feed processing ring die granulating equipment;

[0018] Figure 2 Fig. 4 is a structural schematic view of the centrifugal bottom plate of the present feed processing ring die granulating equipment;

[0019] Figure 3 Fig. 5 is a structural schematic view of the rotating frame of the present feed processing ring die granulating equipment.

[0020] In the figure: 1, frame; 2, feeding pipe; 3, conditioning cylinder; 4, granulating cylinder; 5, die sleeve; 6, centrifugal bottom plate; 7, compression roller; 8, central rotating shaft; 9, feeding ring; 10, cutting blade; 11, granulating motor; 12, hopper; 13, feeding pipe; 14, negative pressure pipe; 15, negative pressure fan; 41, support frame; 51, gear ring; 61, intermediate gear; 62, fixed shaft; 71, connecting shaft; 81, rotating frame; 82, auxiliary gear; 83, extension shaft; 91, feeding pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0022] With reference to Figure 1 A feed processing ring die granulator device comprises a feeding worm 2, a conditioning cylinder 3 and a granulating cylinder 4 arranged on a frame 1. The feeding end of the feeding worm 2 is provided with a feed bin 12, the discharge end of the feeding worm 2 is communicated with the feeding end of the conditioning cylinder 3, and the discharge end of the conditioning cylinder 3 is communicated with the feeding end of the granulating cylinder 4. The feeding worm 2 is used to send the feed powder in the feed bin 12 into the conditioning cylinder 3. The conditioning cylinder 3 is a conditioning assembly of the ring die in the prior art, which is used for conditioning the feed powder. The conditioned feed powder enters the granulating cylinder 4 for granulation treatment.

[0023] The inside of the granulating cylinder 4 is provided with a coaxial ring die. The side wall of the ring die is provided with a material hole pointing to the axis. The inside of the ring die is provided with a compression roller 7 rotating relative to the ring die. The compression roller 7 is used to extrude the material layer of the side wall of the ring die, so that the material layer is extruded out of the material hole of the side wall of the ring die to form a material strip. The granulating cylinder 4 is fixedly provided with a cutting blade 10 outside the ring die. The cutting blade 10 is used to cut the material strip to obtain feed particles. The feed particles come out of the discharge port at the bottom of the granulating cylinder 4. In the present application, the ring die comprises a die sleeve 5 as the side wall and a centrifugal bottom plate 6 for sealing the bottom. The die sleeve 5 and the centrifugal bottom plate 6 are rotationally and sealingly connected.

[0024] When granulation is performed, the conditioned feed powder enters the inside of the ring die. The feed powder first contacts the centrifugal bottom plate 6. Under the rotating motion of the centrifugal bottom plate 6, the feed powder generates a centrifugal effect. The feed powder accumulates towards the edge of the centrifugal bottom plate 6 and extends towards the inner wall of the die sleeve 5, so that a material layer can be formed on the inner wall of the die sleeve 5. In the present application, since the rotating speed of the centrifugal bottom plate 6 is greater than the rotating speed of the die sleeve 5, the high-speed rotating centrifugal bottom plate 6 can accelerate the accumulation speed of the feed powder on the inner wall of the die sleeve 5, so that a relatively thick material layer is formed on the inner wall of the die sleeve 5. The die sleeve 5 can also rotate rapidly, which can improve the moving speed of the die sleeve 5 relative to the compression roller 7 and improve the granulation efficiency.

[0025] The above-mentioned granulating cylinder 4 is provided with a coaxial central rotating shaft 8. The upper end of the central rotating shaft 8 is fixedly connected with a granulating motor 11. The lower part of the central rotating shaft 8 is fixedly connected with the centrifugal bottom plate 6. The central rotating shaft 8 can drive the centrifugal bottom plate 6 to rotate.

[0026] In the present embodiment, reference is made to Figure 2The lower rotating sleeve of the center rotating shaft 8 is sleeved with an auxiliary gear 82. The bottom surface of the centrifugal bottom plate 6 is provided with an intermediate gear 61 which is rotationally connected to a fixed shaft 62 which is fixedly connected to the granulating cylinder 4. The inside of the granulating cylinder 4 is fixedly provided with a support frame 41 which is rotationally connected to the granulating cylinder 4. The upper part of the die sleeve 5 is rotationally connected to the support frame 41, and the lower part of the die sleeve 5 is fixedly connected with a gear ring 51. The auxiliary gear 82 and the gear ring 51 are respectively engaged with the center gear 61 which is located between the auxiliary gear 82 and the gear ring 51. The center rotating shaft 8 can drive the auxiliary gear 82 to rotate, and the auxiliary gear 82 can drive the gear ring 51 to rotate through the intermediate gear 61, thereby realizing the rotary motion of the die sleeve 5.

[0027] In the above process, the rotating direction of the centrifugal bottom plate 6 is opposite to that of the die sleeve 5. When the rotating directions of the centrifugal bottom plate 6 and the die sleeve 5 are opposite, the feed powder accumulated on the edge of the centrifugal bottom plate 6 is affected by the friction force in two directions, and the flowability of the feed powder is better, which is beneficial to extending to the inner wall of the die sleeve 5.

[0028] In this embodiment, the center rotating shaft 8 is fixedly sleeved with a rotating frame 81, and the rotating frame 81 is fixedly provided with a connecting shaft 71 on which the compression roller 7 is rotationally sleeved. Figure 3 The center rotating shaft 8 can drive the rotating frame 81 to rotate, and the rotating frame 81 can drive the compression roller 7 to rotate relative to the die sleeve 5 through the connecting shaft 71, thereby realizing the relative motion and extrusion of the compression roller 7 to the material layer on the inner wall of the die sleeve 5. The surface of the compression roller 7 in the present application is provided with a tooth shape, which facilitates the compression roller 7 to produce autorotation under the rotation of the rotating frame 81, and at the same time, the compression roller 7 can stably extrude the material layer on the inner wall of the die sleeve 5.

[0029] The bottom of the support frame 41 is fixedly provided with a cutting blade 10, and the support frame 41 is fixedly connected to the rotating frame 81, so that the relative position between the compression roller 7 and the cutting blade 10 can be fixed. In the case that the rotating speed of the die sleeve 5 is unchanged, feed particles with uniform length can be obtained.

[0030] Further, the granulating cylinder 4 is provided below the ring die with a negative pressure pipe 14, the inside of the negative pressure pipe 14 is provided with an extension shaft 83, and the extension shaft 83 and the negative pressure pipe 14 are coaxially arranged with the center rotating shaft 8. The upper end of the extension shaft 83 is fixedly connected to the lower end of the center rotating shaft 8, and the lower end of the extension shaft 83 is provided with a negative pressure fan 15. The center rotating shaft 8 can drive the negative pressure fan 15 to rotate, so that negative pressure is generated in the inside of the negative pressure pipe 14. The side surface of the negative pressure pipe 14 is in communication with the outer space of the ring die, and the bottom of the negative pressure pipe 14 is in communication with the outside of the granulating cylinder 4. Through the negative pressure pipe 14, the exhaust of the inside of the granulating cylinder 4 can be accelerated, the discharge of water vapor and dust can be accelerated, the dust in the feed particle collecting device can be reduced, and the discharged dust can be absorbed by other collecting members.

[0031] In this embodiment, the upper part of the granulating cylinder 4 is provided with a feeding ring 9 coaxial with the centrifugal bottom plate 6. The feeding end of the feeding ring 9 is communicated with the discharging end of the conditioning cylinder 3 through a feeding pipe 13. The discharging end of the feeding ring 9 is provided with a feeding pipe 91 fixedly connected with the rotating frame 81. The feeding pipe 91 is rotatably connected with the feeding ring 9 through the annular bottom plate of the feeding ring 9. When the central rotating shaft 8 drives the feeding pipe 91 to rotate, the annular bottom plate of the feeding ring 9 can rotate relative to the feeding ring 9, so that the normal feeding of the feeding pipe 91 is maintained.

[0032] The working process of the feed processing ring die granulating equipment is as follows:

[0033] Preparation: Put the feed powder into the silo 12, and turn on the corresponding drive motors of the feeding screw 2, the conditioning cylinder 3 and the granulating motor 8.

[0034] The above-mentioned granulating motor 8 drives the centrifugal bottom plate 6, the rotating frame 81 and the auxiliary gear 82 to rotate. The auxiliary gear 82 drives the gear ring 51 to rotate through the intermediate gear 61, so as to realize the rotary motion of the die sleeve 5. At this time, the rotating direction of the centrifugal bottom plate 6 is opposite to that of the die sleeve 5.

[0035] Step one: the feeding screw 2 sends the feed powder in the silo 12 into the conditioning cylinder 3, and the conditioning cylinder 3 conditions the feed powder;

[0036] Step two: the conditioned feed powder enters the feeding ring 9, and enters the bottom of the ring die of the granulating cylinder 4 through the feeding pipe 91;

[0037] Step three: the feed powder contacts with the centrifugal bottom plate 6. Under the high-speed rotary motion of the centrifugal bottom plate 6, the feed powder generates a centrifugal effect, and the feed powder is quickly accumulated to the edge of the centrifugal bottom plate 6 and extends to the inner wall of the die sleeve 5, so that a relatively thick material layer is formed on the inner wall of the die sleeve 5;

[0038] At the same time, the rotating frame 81 drives the compression roller 7 to rotate relative to the die sleeve 5 through the connecting shaft 71, so as to realize the relative motion and extrusion of the compression roller 7 to the material layer on the inner wall of the die sleeve 5, so that the material layer is extruded from the side wall material hole of the ring die to form a material strip.

[0039] Step four: the die sleeve 5 rotates at high speed, the material strip forming efficiency is high, the cutting blade 10 cuts the material strip, and the feed granules are obtained, which are discharged from the discharging port at the bottom of the granulating cylinder 4.

[0040] The feed processing ring die granulating equipment in this embodiment is used for granulating feed powder. The side wall and the bottom plate of the ring die are respectively controlled to act. The bottom plate is used as a centrifugal part of the feed powder to realize the fast and sufficient wall sticking of the feed powder. The side wall is used as a control part of the granulation efficiency. The two parts can maintain the working efficiency at the same time, so as to realize the high efficiency and high quality of the ring die granulation.

[0041] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A feed processing ring die pelleting device, comprising a feeding auger (2), a conditioning cylinder (3), and a pelleting cylinder (4) located on a frame (1), wherein a hopper (12) is provided at the feeding end of the feeding auger (2), the discharge end of the feeding auger (2) is connected to the feeding end of the conditioning cylinder (3), the discharge end of the conditioning cylinder (3) is connected to the feeding end of the pelleting cylinder (4), a coaxial ring die and a cutting blade (10) located outside the ring die are provided inside the pelleting cylinder (4), and a pressure roller (7) rotating relative to the ring die is provided inside the ring die, characterized in that, The ring die includes a die sleeve (5) serving as a sidewall and a centrifugal base plate (6) for bottom sealing. The die sleeve (5) and the centrifugal base plate (6) are rotatably sealed together. The die sleeve (5) is rotatably connected to the granulation cylinder (4). The rotational speed of the centrifugal base plate (6) is greater than that of the die sleeve (5), and the rotational direction of the centrifugal base plate (6) is opposite to that of the die sleeve (5). The granulation cylinder (4) is provided with a central rotating shaft (8) that drives the centrifugal base plate (6) to rotate, and the lower part of the central rotating shaft (8) is rotatably sleeved with an auxiliary gear (82). An intermediate gear (61) is provided on the bottom surface of the centrifugal base plate (6), and the intermediate gear (61) is fixedly connected to the granulation cylinder (4) through a fixed shaft (62); The bottom of the mold (5) is fixedly connected to the toothed ring (51); The auxiliary gear (82) and the gear ring (51) respectively mesh with the intermediate gear (61); The granulation cylinder (4) is provided with a negative pressure tube (14) below the ring die. An extension shaft (83) is provided inside the negative pressure tube (14). The extension shaft (83) and the negative pressure tube (14) are respectively coaxially arranged with the central rotating shaft (8). The upper end of the extension shaft (83) is fixedly connected to the lower end of the central rotating shaft (8), and a negative pressure fan (15) is provided at the lower end of the extension shaft (83). The side of the negative pressure tube (14) is connected to the external space of the ring die, and the bottom of the negative pressure tube (14) is connected to the outside of the granulation cylinder (4).

2. The feed processing ring die pelleting equipment according to claim 1, characterized in that, The rotating frame (81) is fixedly sleeved on the central rotating shaft (8), and the pressure roller (7) is rotatably connected to the rotating frame (81) through the connecting shaft (71).

3. The feed processing ring die pelleting equipment according to claim 2, characterized in that, The granulation cylinder (4) is provided with a support frame (41) inside. The support frame (41) is rotatably connected to the granulation cylinder (4) and the mold sleeve (5) respectively. The support frame (41) is fixedly connected to the cutting blade (10) and the rotating frame (81).

4. The feed processing ring die pelleting equipment according to claim 2 or 3, characterized in that, The upper part of the granulation cylinder (4) is provided with a feeding ring (9) coaxial with the centrifugal base plate (6). The feeding end of the feeding ring (9) is connected to the discharge end of the conditioning cylinder (3) through the feeding pipe (13). The discharge end of the feeding ring (9) is provided with a feeding pipe (91). The feeding pipe (91) is fixedly connected to the rotating frame (81). The feeding pipe (91) is rotatably connected to the feeding ring (9) through the annular base plate of the feeding ring (9).

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