A granulator spindle protection device

Abstract

The utility model discloses a granulator main shaft protection device, including apron, seal seat, safety axle, copper bush, key body, hollow shaft, solid axle, first bearing, second bearing and third bearing, one side of solid axle is equipped with seal seat, the outside of seal seat is equipped with apron, the size of apron is compatible with the size of seal seat, a plurality of safety axle is equipped with in apron and seal seat junction, a plurality of safety axle is opposite solid axle and is set up symmetrically, apron and solid axle corresponding position are equipped with key body, the upper end surface of key body is fixedly connected with apron, and the one end of key body is away from apron and is fixedly connected with solid axle. The utility model plays to the anti -overload protection of granulator main shaft to provide the shutdown protection effect when overloading, avoids other components in granulator and is damaged.

Description

Technical Field

[0001] This utility model relates to the field of granulator equipment technology, specifically a granulator spindle protection device. Background Technology

[0002] A pellet mill mainly consists of a feeding, mixing, pelleting, transmission, and lubrication system, and is widely used in the pharmaceutical, chemical, and food industries. Pellet mills can be divided into feed pellet mills and biomass energy pellet mills. The working process involves feed powder with a moisture content not exceeding 15% entering the feeding auger from the hopper. The appropriate material flow rate is obtained by adjusting the speed of the continuously variable motor. The powder then enters the mixer, where it is agitated and mixed with steam for conditioning. If molasses or oil needs to be added, it is also added through the mixing drum and conditioned with the steam. The amount of oil added generally does not exceed 3%, otherwise it is difficult to form pellets. After conditioning, the temperature of the feed powder can reach 64-85℃, and the moisture content can reach 14-16%. The powder then passes through an inclined chute and an optional magnet remover to remove iron impurities mixed in with the powder, finally entering the pressing chamber for pelleting.

[0003] In existing pellet mills, if the material added to the pelleting hopper is too heavy, it may cause the main shaft to break, which may lead to damage to the entire equipment. If the equipment does not have a protective device, it may also cause certain injuries to the workers. Therefore, this utility model proposes a pellet mill main shaft protection device that can safely stop the machine and protect other internal components of the pellet mill when too heavy material is added to the pelleting hopper. Utility Model Content

[0004] The purpose of this invention is to provide a protection device for the main shaft of a pellet mill to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a granulator spindle protection device, comprising a cover plate, a sealing seat, a safety shaft, a copper sleeve, a key body, a hollow shaft, a solid shaft, a first bearing, a second bearing, and a third bearing. A sealing seat is provided on one side of the solid shaft, and a cover plate is provided on the outer side of the sealing seat. The size of the cover plate is adapted to the size of the sealing seat. Multiple safety shafts are provided at the connection between the cover plate and the sealing seat. The multiple safety shafts are symmetrically arranged relative to the solid shaft. A key body is provided at the position corresponding to the solid shaft on the cover plate. The upper end face of the key body is fixedly connected to the cover plate, and the end of the key body away from the cover plate is fixedly connected to the solid shaft.

[0006] Preferably, a copper sleeve is provided at the position corresponding to the key body of the sealing seat, the size of the copper sleeve is adapted to the inner wall size of the cover plate, and the copper sleeve is rotatably connected to the cover plate.

[0007] Preferably, a hollow shaft is provided on the outer side of the solid shaft near the sealing seat, the size of the hollow shaft is adapted to the size of the solid shaft, and a third bearing is provided on the hollow shaft near the sealing seat.

[0008] Preferably, the dimensions of the third bearing are adapted to the end face dimensions of the hollow shaft.

[0009] Preferably, a second bearing is provided on the side of the hollow shaft away from the sealing seat, the size of the second bearing is larger than the size of the third bearing, and a first bearing is provided on the solid shaft near the second bearing, the size of the first bearing is adapted to the size of the solid shaft, and the first bearing is rotatably connected to the solid shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are: this utility model provides overload protection for the main shaft of the granulator and provides shutdown protection in case of overload, preventing damage to other parts inside the granulator. Through the action of the copper sleeve and key body, it ensures that the solid shaft will not rotate during normal use. Through the action of the cover plate, sealing seat and copper sleeve, it ensures that the solid shaft is easier to install. Through the first bearing, second bearing and third bearing, it ensures that the entire device has a certain degree of stability after installation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a side view of the structure of this utility model;

[0013] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1. Cover plate; 2. Sealing seat; 3. Safety shaft; 4. Copper sleeve; 5. Key body; 6. Hollow shaft; 7. Solid shaft; 8. First bearing; 9. Second bearing; 10. Third bearing. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a granulator spindle protection device, including a cover plate 1, a sealing seat 2, a safety shaft 3, a copper sleeve 4, a key body 5, a hollow shaft 6, a solid shaft 7, a first bearing 8, a second bearing 9, and a third bearing 10. A sealing seat 2 is provided on one side of the solid shaft 7, and a cover plate 1 is provided on the outer side of the sealing seat 2. The size of the cover plate 1 is adapted to the size of the sealing seat 2. Multiple safety shafts 3 are provided at the connection between the cover plate 1 and the sealing seat 2. The multiple safety shafts 3 are symmetrically arranged relative to the solid shaft 7. A key body 5 is provided at the position corresponding to the solid shaft 7 on the cover plate 1. The upper end face of the key body 5 is fixedly connected to the cover plate 1, and the end of the key body 5 away from the cover plate 1 is fixedly connected to the solid shaft 7.

[0019] In this embodiment, a copper sleeve 4 is provided at the position corresponding to the key body 5 of the sealing seat 2. The size of the copper sleeve 4 is adapted to the inner wall size of the cover plate 1, and the copper sleeve 4 is rotatably connected to the cover plate 1.

[0020] In this embodiment, a hollow shaft 6 is provided on the outer side of the solid shaft 7 near the sealing seat 2. The size of the hollow shaft 6 is adapted to the size of the solid shaft 7, and a third bearing 10 is provided on the hollow shaft 6 near the sealing seat 2.

[0021] In this embodiment, the dimensions of the third bearing 10 are adapted to the end face dimensions of the hollow shaft 6.

[0022] In this embodiment, a second bearing 9 is provided on the side of the hollow shaft 6 away from the sealing seat 2. The size of the second bearing 9 is larger than the size of the third bearing 10. A first bearing 8 is provided on the solid shaft 7 near the second bearing 9. The size of the first bearing 8 is adapted to the size of the solid shaft 7, and the first bearing 8 is rotatably connected to the solid shaft 7.

[0023] Working principle: During normal operation, the hollow shaft 6 is fixed to the inner hole of the reducer housing via the second bearing 9 and the third bearing 10. The driven wheel of the reducer is installed on the hollow shaft 6. When it is driven to rotate by the driving wheel of the reducer, the ring die of the pellet mill mounted on the hollow shaft 6 rotates. Then, the solid shaft 7 is mounted on the inner hole of the hollow shaft 6 and the sealing seat 2 via the copper sleeve 4 and the first bearing 8. When the pelleting hopper is not overloaded, the solid shaft 7 does not rotate due to the presence of the key body 5 and the cover plate 1, and the pressure roller is mounted on the solid shaft 7. When the pelleting hopper is overloaded, the ring die... When there are hard foreign objects in the internal material or the processing volume exceeds the normal amount, the ring die and pressure roller force the solid shaft 7 to rotate. When the shear force generated is greater than the bearing capacity of the safety shaft 3, the safety shaft 3 will break, which will cause the cover plate 1 to rotate and trigger the overload protection switch (not shown in the figure, only the mechanical structure is shown) installed on the cover plate 1 to stop the machine. This achieves the protection of the main components of the pellet mill, ensuring that the mechanical components of the pellet mill can be effectively protected in the event of overload, thereby greatly reducing maintenance time and maintenance costs.

[0024] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protection device for the main shaft of a pellet mill, characterized in that, The assembly includes a cover plate (1), a sealing seat (2), a safety shaft (3), a copper sleeve (4), a key body (5), a hollow shaft (6), a solid shaft (7), a first bearing (8), a second bearing (9), and a third bearing (10). A sealing seat (2) is provided on one side of the solid shaft (7), and a cover plate (1) is provided on the outside of the sealing seat (2). The size of the cover plate (1) is adapted to the size of the sealing seat (2). Multiple safety shafts (3) are provided at the connection between the cover plate (1) and the sealing seat (2). The multiple safety shafts (3) are symmetrically arranged relative to the solid shaft (7). A key body (5) is provided at the position corresponding to the cover plate (1) and the solid shaft (7). The upper end face of the key body (5) is fixedly connected to the cover plate (1), and the end of the key body (5) away from the cover plate (1) is fixedly connected to the solid shaft (7).

2. The pellet mill spindle protection device according to claim 1, characterized in that: The sealing seat (2) is provided with a copper sleeve (4) at the position corresponding to the key body (5). The size of the copper sleeve (4) is adapted to the inner wall size of the cover plate (1), and the copper sleeve (4) is rotatably connected to the cover plate (1).

3. The pellet mill spindle protection device according to claim 1, characterized in that: A hollow shaft (6) is provided on the outer side of the solid shaft (7) near the sealing seat (2). The size of the hollow shaft (6) is adapted to the size of the solid shaft (7), and a third bearing (10) is provided on the hollow shaft (6) near the sealing seat (2).

4. The pellet mill spindle protection device according to claim 3, characterized in that: The dimensions of the third bearing (10) are adapted to the end face dimensions of the hollow shaft (6).

5. A pellet mill spindle protection device according to claim 3, characterized in that: A second bearing (9) is provided on the side of the hollow shaft (6) away from the sealing seat (2). The size of the second bearing (9) is larger than that of the third bearing (10). A first bearing (8) is provided on the solid shaft (7) near the second bearing (9). The size of the first bearing (8) is adapted to the size of the solid shaft (7), and the first bearing (8) is rotatably connected to the solid shaft (7).

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