Granulator and transmission structure thereof

Abstract

The transmission structure comprises a transmission sleeve and a transmission shaft, one end of the transmission sleeve is axially connected with the transmission shaft in an inserted mode and is in circumferential linkage with the transmission shaft, the transmission sleeve is a thin-wall easily-broken part, linkage of the transmission shaft is achieved through the transmission sleeve, and the transmission shaft can be driven by the transmission sleeve when the transmission shaft is accidentally clamped. Large interaction force is generated at the joint of the transmission shaft and the transmission sleeve, so that the transmission sleeve is damaged, the transmission state is relieved, a driving source is effectively disconnected, the situation that the whole device is damaged due to forced continuous transmission is avoided, the situation that the device is accidentally damaged is effectively reduced, and the durability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of granulators, in particular to a granulator and a transmission structure thereof. Background Art

[0002] A granulator is a molding machine that can shape materials into specific shapes. It is widely used in agriculture, medicine, and chemical industries. In particular, the field of crop fertilizers often requires granulation of finished products.

[0003] A search revealed Chinese patent application number CN215586413U, which discloses a double-roller extrusion granulator. The granulator comprises a granulator unit, a reduction unit connected to the granulator unit, a power source connected to the reduction unit, a transmission unit disposed below the granulator unit, a transmission unit drive for driving the transmission unit, and an explosion-proof isolation structure. The granulator unit and the transmission unit are located on the same side of the explosion-proof isolation structure, while the reduction unit, power source, and transmission unit drive are located on the other side of the explosion-proof isolation structure. The explosion-proof isolation structure blocks dust generated during the operation of the granulator unit and the transmission unit, effectively preventing the spread of dust during the production process and improving safety.

[0004] In the above scheme, the rollers used for granulation are connected by sprockets and chains to achieve synchronous rotation. However, in actual use, the crushing rollers may encounter increasing rotation resistance due to screen blockage. In severe cases, the crushing rollers may get stuck. At this time, the driving source continues to forcibly drive the crushing rollers to rotate through the sprockets and chains, which may easily cause damage to the entire equipment and needs further improvement. Utility Model Content

[0005] In order to reduce the possibility of accidental damage to the equipment, the present application provides a transmission structure.

[0006] This application provides a transmission structure, which adopts the following technical solutions:

[0007] A transmission structure comprises a transmission sleeve and a transmission shaft, wherein one end of the transmission sleeve is axially plugged into the transmission shaft and circumferentially linked, and the transmission sleeve is a thin-walled, easily broken part.

[0008] Optionally, the transmission sleeve is a metal sleeve.

[0009] Optionally, the middle portion of the transmission sleeve has a concave annular groove.

[0010] Optionally, the end of the transmission sleeve has a plug-in slot, the end of the transmission shaft has a plug-in end plugged into the plug-in slot, and the cross-sections of the plug-in end and the plug-in slot are both polygonal.

[0011] Optionally, two transmission shafts are provided and are respectively plugged into the two ends of the transmission sleeve.

[0012] The present application also provides a granulator, which has the advantage of reducing accidental damage to the equipment and adopts the following technical solution:

[0013] A granulator includes the above-mentioned transmission structure, and also includes a machine body, a granulating mechanism and a shaper. The shaper includes a shaping roller rotatably connected to the machine body, and the granulating mechanism includes a granulating roller rotatably connected to the machine body. The transmission shaft on one side is connected to the shaping roller, and the transmission shaft on the other side is rotatably connected to the machine body and the transmission shaft is linked to the granulating roller.

[0014] Optionally, both the granulating roller and the transmission shaft are provided with sprockets, and a chain connecting the two is provided between the sprockets.

[0015] Optionally, a bearing seat is provided on the machine body, one end of the transmission shaft is rotatably connected to the bearing seat, and a bearing is provided in the bearing seat.

[0016] Optionally, two shaping rollers are arranged at intervals, and a transmission gear for transmitting the two adjacent shaping rollers is provided between the two adjacent shaping rollers.

[0017] Optionally, a mounting plate for mounting the shaping roller is provided on the machine body, one end of the shaping roller passes through the mounting plate, a screen is provided at the bottom of the mounting plate, the screen is located below the shaping roller, and the bottom wall of the screen is an arc surface that fits the shaping roller.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The transmission shaft is linked by the transmission sleeve. In the event of an accidental jam, a large interaction force is generated at the connection between the transmission shaft and the transmission sleeve, causing the transmission sleeve to break and release the transmission state, effectively disconnecting the drive source and avoiding forced continuous transmission that may cause damage to the entire equipment. This effectively reduces accidental damage to the equipment and improves its durability.

[0020] 2. The transmission sleeve adopts a metal sleeve, which has low structural strength and low cost. It is easy to disconnect the transmission in the event of accidental jamming, ensuring the timely disconnection of the transmission and power source;

[0021] 3. The design of the ring groove on the transmission sleeve makes the wall thickness at this location thinner, further ensuring the timeliness of transmission and power source disconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of Example 1.

[0023] Figure 2 This is a cross-sectional view of Example 1.

[0024] Figure 3 It is a three-dimensional diagram of the transmission sleeve in Example 1.

[0025] Figure 4 This is a front view of Example 2.

[0026] Description of reference numerals:

[0027] 1. Transmission sleeve; 2. Transmission shaft; 3. Plug-in slot; 4. Plug-in end; 5. Ring groove; 6. Hollow groove; 7. Machine body; 8. Granulating mechanism; 9. Shaper; 10. Driving motor; 11. Reducer; 12. Belt; 13. Granulating roller; 14. Shaping roller; 15. Screen; 16. Bearing seat; 17. Sprocket; 18. Chain; 19. Transmission gear; 20. Mounting plate. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 This application is described in further detail.

[0029] Example 1

[0030] A transmission structure, such as Figure 1-Figure 3 As shown, it includes a transmission sleeve 1 and transmission shafts 2 at both ends. The transmission sleeve 1 is hollow inside, and plug-in grooves 3 are provided at both ends of the transmission sleeve 1. One end of the transmission shaft 2 has a plug-in end 4 that is adapted to be plugged into the plug-in groove 3. When the plug-in end 4 cooperates with the plug-in groove 3, the transmission shaft 2 and the transmission sleeve 1 are circumferentially linked. The radial cross-section of the plug-in groove 3 is polygonal. In this embodiment, the radial cross-section of the plug-in groove 3 is a quadrilateral, so that the power transmission of the two transmission shafts 2 can be achieved by axial plug-in with the help of the connection of the transmission sleeve 1. In this embodiment, the transmission sleeve 1 is a thin-walled and fragile part. The transmission sleeve 1 specifically adopts a metal sleeve, and the specific material of the metal sleeve is carbon steel, that is, the transmission sleeve 1 cannot withstand large torsional forces. In this way, when an unexpected jam occurs during the rotation of the transmission shaft 2 at one end, the continuously increasing torsional force will damage the transmission sleeve 1 in time and cut off the power transmission, avoiding the situation where the equipment is always in a transmission state and is damaged, effectively reducing the situation of accidental damage to the equipment and improving the durability of the equipment.

[0031] like Figure 1-Figure 3 As shown, a concave annular groove 5 is provided in the middle of the outer wall of the transmission sleeve 1. In other embodiments, the annular groove can also be provided on the inner wall of the transmission sleeve 1. The bottom wall of the annular groove 5 is an arc surface, and a hollow groove 6 is provided inside the transmission sleeve 1 corresponding to the annular groove 5. The hollow groove 6 is located between the two plug-in ends 4. With the help of the setting of the annular groove 5, the wall thickness at this location is thinner, that is, it is more prone to breakage and damage at this location in actual use, which effectively improves the timeliness of cutting off the power source and cutting off the transmission state, and plays a good insurance role. The transmission sleeve 1 deforms when subjected to a large torsional force, and the hollow groove 6 provides a deformation space, which is convenient for the deformation and damage of the transmission sleeve 1.

[0032] Example 2

[0033] A granulator, such as Figure 4 As shown, it includes a body 7, a granulating mechanism 8 and a shaper 9, and also includes Example 1. A driving motor 10 is arranged at the bottom of the body 7. The driving motor 10 transmits power to the granulating mechanism 8 through a belt 12 and a reducer 11. The granulating mechanism 8 includes two granulating rollers 13 arranged in parallel. The shaper 9 is located below the granulating mechanism 8. The material after granulation is finally screened and discharged through the screen 15 at the bottom of the shaper 9 in the shaper 9. The shaper 9 includes two shaping rollers 14 arranged in parallel, and shaping strips are evenly distributed on the outer wall of the shaping roller 14.

[0034] like Figure 4 The end of the two sprockets 17 is connected to the shaping roller 14 by a chain 18, and the power on the granulating roller 13 can be transmitted to the shaping roller 14 through the sprocket 17 and the chain 18. That is, the shaping roller 14 is synchronously driven to rotate during the rotation of the granulating roller 13 to achieve the breaking effect. When the screen 15 is gradually blocked, the resistance to the rotation of the shaping roller 14 will become greater and greater. When the transmission sleeve 1 breaks to a certain extent, the power transmission can be cut off in time to avoid the damage caused by forced rotation of the shaping roller 14, thereby achieving a good insurance effect and avoiding damage to the equipment. The transmission sleeve 1 is a disposable wearing part and can be replaced with a new transmission sleeve 1 when the equipment is continued to be used.

[0035] like Figure 4 As shown, the ends of the two shaping rollers 14 are provided with mutually meshing transmission gears 19, and power transmission can be achieved with the help of the transmission gears 19. The two shaping rollers 14 rotate synchronously in opposite directions to improve the shaping and breaking up effect, which can be achieved without an additional driving source. A mounting plate 20 for the shaping roller 14 to be rotatably connected is provided on the machine body 7. One end of the shaping roller 14 passes through the mounting plate 20, and the screen 15 is provided at the bottom of the mounting plate 20. The bottom wall of the screen 15 is an arc surface that fits the shaping roller 14. The bottom wall of the screen 15 is close to the shaping strip on the shaping roller 14, so as to ensure that the shaping roller 14 can contact all the materials at the bottom when rotating, thereby improving the breaking up and material screening effect, and avoiding the situation where a large amount of material accumulates at the bottom of the screen 15 and the shaping strip on the shaping roller 14 cannot be touched.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A transmission structure, characterized in that: It comprises a transmission sleeve (1) and a transmission shaft (2); one end of the transmission sleeve (1) is axially plugged into the transmission shaft (2) and circumferentially linked; the transmission sleeve (1) is a thin-walled, easily breakable part.

2. A transmission structure according to claim 1, characterized in that: The transmission sleeve (1) is a metal sleeve.

3. A transmission structure according to claim 2, characterized in that: The middle portion of the transmission sleeve (1) is provided with an inwardly concave annular groove (5).

4. A transmission structure according to claim 1, characterized in that: The end of the transmission sleeve (1) has a plug-in slot (3), and the end of the transmission shaft (2) has a plug-in end (4) plugged into the plug-in slot (3). The plug-in end (4) and the plug-in slot (3) both have polygonal cross-sections.

5. The transmission structure according to claim 1, characterized in that: Two transmission shafts (2) are provided and are respectively plugged into the two ends of the transmission sleeve (1).

6. A granulator, characterized in that: It comprises the transmission structure described in any one of claims 1 to 5, and also comprises a machine body (7), a granulating mechanism (8) and a shaper (9), wherein the shaper (9) comprises a shaping roller (14) rotatably connected to the machine body (7), the granulating mechanism (8) comprises a granulating roller (13) rotatably connected to the machine body (7), the transmission shaft (2) on one side is connected to the shaping roller (14), and the transmission shaft (2) on the other side is rotatably connected to the machine body (7) and the transmission shaft (2) is linked to the granulating roller (13).

7. A granulator according to claim 6, characterized in that: The granulating roller (13) and the transmission shaft (2) are both provided with sprockets (17), and a chain (18) connecting the two is provided between the sprockets (17).

8. A granulator according to claim 6, characterized in that: A bearing seat (16) is provided on the machine body (7), one end of the transmission shaft (2) is rotatably connected to the bearing seat (16), and a bearing is provided in the bearing seat (16).

9. A granulator according to claim 6, characterized in that: Two shaping rollers (14) are arranged at intervals, and a transmission gear (19) for transmitting the two adjacent shaping rollers (14) is arranged between them.

10. A granulator according to claim 6, characterized in that: The machine body (7) is provided with a mounting plate (20) for mounting a shaping roller (14), one end of the shaping roller (14) passes through the mounting plate (20), and a screen (15) is provided at the bottom of the mounting plate (20), the screen (15) is located below the shaping roller (14), and the bottom wall of the screen (15) is an arc surface that fits the shaping roller (14).

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