Automatic oiling device of granulator

Abstract

The utility model belongs to the technical field of feed production equipment, and particularly relates to an automatic oiling device of a granulator. A compression roller is arranged in the circular mold, and an oil inlet is formed in the outer side of the circular mold; a sliding plug is arranged in the oil inlet; an oil tank is arranged on the upper side of the oil inlet; an oil outlet communicated with the oil inlet is formed in the lower side of the oil tank; elastic mechanisms are arranged on the two sides of the sliding plug. An electromagnetic assembly is arranged in the sliding plug; and the rotating shaft end of the compression roller is connected with an encoder. The encoder can monitor the revolution turns of the compression roller in real time; when the revolution number of turns of the compression roller reaches a preset value, the electromagnetic assembly is powered on by the power supply, so that the iron core generates magnetism, and when the end of the compression roller passes through the inner side of the sliding plug at a time, the sliding plug can be pushed inwards due to the mutual exclusion effect of like poles, so that the check block on the upper side of the sliding plug moves relative to the through hole; and the grease can enter the circular mould from the oil tank downwards through the through hole and the oil inlet.

Description

Technical Field

[0001] This utility model relates to an automatic refueling device, specifically an automatic feeding device for a pellet mill, belonging to the technical field of feed pellet mills. Background Technology

[0002] A pellet mill includes a ring die and a pressure roller. The pressure roller rotates around the center of the ring die, crushing the material inside to form pellets. During pelleting, edible oil needs to be added to the ring die as needed. This serves two purposes: lubrication between the pressure roller and the ring die, reducing wear, and improving the palatability of the feed. However, existing pellet mills typically rely on manual judgment of the oiling timing. If this timing is misjudged, insufficient oil content in the ring die can cause severe wear on the pressure roller surface. Furthermore, the old-fashioned oiling method involves simply opening the oiling valve and pouring in the oil, which is not conducive to controlling the amount of oil added. Chinese patent document CN204499438U discloses a feed pellet mill that improves the oiling method by using nozzles. However, the nozzles require additional pressure to operate, resulting in complex piping. Moreover, the rotation of the pressure roller itself can already evenly distribute the oil to all parts of the ring die, eliminating the need for a specific design for uniform oil distribution. Therefore, this complex design increases costs for automatic oil dispensing and has limited practical value.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose an automatic oiling device for a granulator, which has precise control over the oiling interval time, controllable oiling volume, simple and reasonable structure, and high practical value.

[0005] An automatic oiling device for a granulator includes a ring die; a pressure roller is disposed inside the ring die, and an oil inlet is disposed on the outer side of the ring die; a sliding plug is disposed inside the oil inlet; an oil tank is disposed above the oil inlet; an oil outlet communicating with the oil inlet is opened on the lower side of the oil tank; elastic mechanisms are disposed on both sides of the sliding plug; an electromagnetic component is disposed inside the sliding plug; the rotating shaft end of the pressure roller is connected to an encoder; the encoder and the electromagnetic component are respectively connected to a power supply; and a magnetic block is disposed at the end of the pressure roller.

[0006] Furthermore, the oil inlet penetrates the side wall of the ring die; the inner end of the oil inlet opens on the inner wall of the ring die, and the outer end is located on the outer side of the ring die; the oil inlet is inclined.

[0007] Furthermore, the bottom of the oil tank is inclined at the same angle as the oil inlet; the oil outlet is located above the oil inlet; and the oil inlet has a through hole relative to the oil outlet.

[0008] Furthermore, the outer contour of the sliding plug is consistent with the inner contour shape of the oil inlet; the size of the sliding plug is smaller than that of the oil inlet; a stop is provided on the upper surface of the sliding plug; the cross-section of the stop is a right trapezoid.

[0009] Furthermore, the elastic mechanism includes protrusions on both sides of the sliding plug; a guide groove is provided on the inner side of the oil inlet; the protrusions slide within the guide groove; a spring is provided within the guide groove; and the spring is connected to the protrusions.

[0010] Furthermore, the electromagnetic component includes an iron core; the iron core is inserted into the front end of the sliding plug; a coil is wrapped around the outside of the iron core; and the coil is connected to a power source.

[0011] Furthermore, the magnetic poles of the magnetic block and the iron core are aligned in the same direction at the end closer to each other.

[0012] This invention offers the following advantages: the encoder monitors the number of revolutions of the pressure roller in real time; when the number of revolutions reaches a preset value, the electromagnetic component is energized, causing the iron core to become magnetic. When the end of the pressure roller passes the inner side of the sliding plug again, due to the repulsion of like poles, the sliding plug is pushed inward, causing the stop block on the upper side of the sliding plug to move relative to the through hole. Grease can then flow from the oil tank down through the through hole and the oil inlet into the ring die. Although the time the pressure roller spends passing the inner side of the sliding plug is short and the amount of oil dispensed at one time is small, the encoder still calculates the number of revolutions of the pressure roller after entering the oiling stage. This ensures that after the pressure roller passes the sliding plug several times (e.g., three or five times), the power supply to the electromagnetic component is cut off to shut off the oil flow. The sliding plug opens the through hole multiple times, ensuring that the amount of oil dispensed meets the requirements. This method allows for intermittent oiling based entirely on the rolling progress during the pelleting process. Furthermore, since the sliding plug moves the same distance each time, the amount of oil dispensed each time is the same. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the ring die and pressure roller in this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the elastic mechanism.

[0016] Figure 4 This is a schematic diagram of the electromagnetic component.

[0017] In the diagram: 1 is the ring die, 2 is the pressure roller, 3 is the oil inlet, 3-1 is the guide groove, 4 is the sliding plug, 4-1 is the stop block, 4-2 is the protrusion, 5 is the oil tank, 6 is the oil outlet, 7 is the spring, 8 is the iron core, 9 is the coil, and 10 is the magnetic block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] See Figures 1-4 This application discloses an automatic oiling device for a granulator, including a ring die 1; a pressure roller 2 is disposed inside the ring die 1, and an oil inlet 3 is disposed on the outer side of the ring die 1; a sliding plug 4 is disposed inside the oil inlet 3; an oil tank 5 is disposed on the upper side of the oil inlet 3; an oil outlet 6 communicating with the oil inlet 3 is opened on the lower side of the oil tank 5; elastic mechanisms are disposed on both sides of the sliding plug 4; an electromagnetic component is disposed inside the sliding plug 4; the rotating shaft end of the pressure roller 2 is connected to an encoder; the encoder and the electromagnetic component are respectively connected to a power supply; and a magnetic block 10 is disposed at the end of the pressure roller.

[0020] Furthermore, the oil inlet 3 penetrates the side wall of the ring mold 1; the inner end of the oil inlet 3 opens on the inner wall of the ring mold 1, and the outer end is located on the outer side of the ring mold 1; the oil inlet 3 is inclined.

[0021] Furthermore, the bottom of the oil tank 5 is inclined, and its inclination angle is the same as that of the oil inlet 3; the oil outlet 6 is opened above the oil inlet 3; and the oil inlet 3 has a through hole relative to the oil outlet 6.

[0022] Furthermore, the outer contour of the sliding plug 4 is consistent with the inner contour shape of the oil inlet 3; the size of the sliding plug 4 is smaller than that of the oil inlet 3; a stop 4-1 is provided on the upper surface of the sliding plug 4; the cross section of the stop 4-1 is a right trapezoid.

[0023] Furthermore, the elastic mechanism includes protrusions 4-2 disposed on both sides of the sliding plug 4; a guide groove 3-1 is disposed on the inner side of the oil inlet 3; the protrusions 4-2 slide within the guide groove 3-1; a spring 7 is disposed within the guide groove 3-1; and the spring 7 is connected to the protrusions 4-2.

[0024] Furthermore, the electromagnetic component includes an iron core 8; the iron core 8 is inserted into the front end of the sliding plug 4; a coil 9 is wrapped around the outside of the iron core 8; and the coil is connected to a power source.

[0025] Furthermore, the magnetic poles of the magnetic block 10 and the iron core 8 are in the same direction at the closer end.

[0026] Working principle: The pressure roller 2 revolves within the ring die 1 and passes the inner side of the sliding plug 4 at fixed time intervals. The encoder monitors the number of revolutions of the pressure roller 2 in real time. When the number of revolutions reaches a preset value, the control power supply powers the coil 9, causing the iron core 8 to generate a magnetic field. When the pressure roller 2 passes the inner side of the sliding plug 4 again, the magnetic block 10 at the end of the pressure roller 2 and the iron core 8 will generate a repulsive force, pushing the sliding plug 4 inward. This causes the stop block 4-1 to move relative to the through hole, opening the oil passage. After the pressure roller 2 passes the sliding plug 4, due to the decrease in the repulsive force, the sliding plug 4 moves downward under the action of the spring, and the stop block 4-1 re-seals the through hole. The number of times the sliding plug 4 opens during each oiling process can be preset. For example, if it needs to be opened three times, the encoder can count during the oiling process, so that the power supply to the coil powers the pressure roller 2 during the three times it passes through. In this way, the sliding plug 4 can move three times for oiling.

[0027] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An automatic oiling device for a pellet mill, comprising a ring die (1); wherein a pressure roller (2) is disposed inside the ring die (1), characterized in that: An oil inlet (3) is provided on the outer side of the ring die (1); a sliding plug (4) is provided inside the oil inlet (3); an oil tank (5) is provided on the upper side of the oil inlet (3); an oil outlet (6) communicating with the oil inlet (3) is provided on the lower side of the oil tank (5); elastic mechanisms are provided on both sides of the sliding plug (4); an electromagnetic component is provided inside the sliding plug (4); the shaft end of the pressure roller (2) is connected to an encoder; the encoder and the electromagnetic component are respectively connected to a power supply; a magnetic block (10) is provided at the end of the pressure roller.

2. The automatic oiling device for a granulator according to claim 1, characterized in that: The oil inlet (3) penetrates the side wall of the ring mold (1); the inner end of the oil inlet (3) opens on the inner wall of the ring mold (1), and the outer end is located on the outer side of the ring mold (1); the oil inlet (3) is inclined.

3. The automatic oiling device for a granulator according to claim 2, characterized in that: The bottom of the oil tank (5) is inclined, and its inclination angle is consistent with that of the oil inlet (3); the oil outlet (6) is opened above the oil inlet (3); the oil inlet (3) has a through hole relative to the oil outlet (6).

4. The automatic oiling device for a granulator according to claim 3, characterized in that: The outer contour of the sliding plug (4) is consistent with the inner contour of the oil inlet (3); the size of the sliding plug (4) is smaller than that of the oil inlet (3); a stop (4-1) is provided on the upper surface of the sliding plug (4); the cross section of the stop (4-1) is a right trapezoid.

5. The automatic oiling device for a granulator according to claim 4, characterized in that: The elastic mechanism includes protrusions (4-2) on both sides of the sliding plug (4); a guide groove (3-1) is provided on the inner side of the oil inlet (3); the protrusions (4-2) slide in the guide groove (3-1); a spring (7) is provided in the guide groove (3-1); the spring (7) is connected to the protrusions (4-2).

6. The automatic oiling device for a granulator according to claim 5, characterized in that: The electromagnetic component includes an iron core (8); the iron core (8) is inserted into the front end of the sliding plug (4); the iron core (8) is covered with a coil (9); the coil is connected to a power source.

7. An automatic oiling device for a granulator according to claim 6, characterized in that: The magnetic poles of the magnetic block (10) and the iron core (8) are in the same direction at the closer end.

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