Granulator reduction gearbox

Abstract

The utility model provides a reduction gearbox of a granulator, and belongs to the technical field of machinery. The problem that an existing granulator is inconvenient to use is solved. The granulator reduction gearbox comprises a box body, an input shaft and an upper output shaft, the input shaft and the upper output shaft are horizontally arranged in the box body, the front end of the upper output shaft extends out of the box body, a transmission shaft and a lower output shaft are further horizontally and rotatably arranged in the box body, and the axes of the transmission shaft, the lower output shaft and the upper output shaft are arranged in parallel; the input shaft is connected with the middle of the transmission shaft through a first gear reduction structure, the front end of the transmission shaft is connected with the rear end of the lower output shaft through a second gear reduction structure, the rear end of the transmission shaft is connected with the rear end of the upper output shaft through a third gear reduction structure, and the front end of the lower output shaft extends out of the box. The reduction gearbox of the granulator is convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a granulator, in particular to a granulator reduction box. Background Art

[0002] Granulation technology is the technology of processing materials in the state of powder, melt, aqueous solution, etc. into granules of certain shape and size. In solid granulation, especially in granulation of particles, the double-roll granulator is an important representative.

[0003] Existing roller granulators, such as a roller extrusion granulator disclosed in the China Patent Library (application number: 202020747979.X), include a base and a power device, an extrusion device, an adjustment device and a crushing and screening device fixed on the base; the power device includes a motor and a reducer installed on the base, and the reducer includes two output shafts; the extrusion device includes a feed hopper installed on the base and two extrusion rollers located below the feed hopper, the extrusion roller includes a main shaft and a roller skin installed on the main shaft, the roller skin rotates synchronously with the main shaft, and the two main shafts are respectively installed on the base through bearings and bearing seats; the adjustment device includes an eccentric sleeve installed on the bearing seat and a positioning pin for positioning the eccentric sleeve, and the distance between the two extrusion rollers can be adjusted by rotating the eccentric sleeve; the crushing and screening device includes two crushing shafts installed below the extrusion rollers, the crushing shafts are provided with crushing teeth, a screen is installed below the crushing shaft, and a lower hopper is provided below the screen; the two output shafts of the reducer are respectively connected to the two main shafts through couplings, and the main shaft is connected to the crushing shaft through a chain.

[0004] In the above-mentioned granulator, the extrusion device is used for particle forming, and the crushing and screening device is used for particle shaping. Since particle shaping will generate a lot of dust, a large amount of dust attached to the chain will hinder the movement of the chain, resulting in the need to constantly take care of the chain during actual use, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a granulator reduction box which is easy to maintain.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a granulator reduction box, including a box body and an input shaft and an upper output shaft both horizontally arranged in the box body, and the front end of the upper output shaft extends out of the box body, characterized in that a transmission shaft and a lower output shaft are also horizontally rotatably arranged in the box body, and the axes of the transmission shaft, the lower output shaft and the upper output shaft are arranged in parallel; the input shaft is connected to the middle part of the transmission shaft through a first gear reduction structure, the front end of the transmission shaft is connected to the rear end of the lower output shaft through a second gear reduction structure, the rear end of the transmission shaft is connected to the rear end of the upper output shaft through a third gear reduction structure, and the front end of the lower output shaft extends out of the box body.

[0007] When in use, the upper input shaft and the lower input shaft are respectively connected to the granulating mechanism and the shaping mechanism, and the transmission parts for driving the upper input shaft and the lower input shaft are arranged inside the box for protection, which can effectively reduce the maintenance frequency of the transmission parts and facilitate use and maintenance.

[0008] In the above-mentioned granulator reduction gearbox, the above-mentioned input shaft, transmission shaft and upper output shaft are arranged horizontally in parallel, and the transmission shaft is arranged between the input shaft and the upper output shaft. This is convenient for layout, simplifies the structure, makes the transmission more stable, and can reduce the height of the reduction gearbox, making the overall structure more compact and reducing space occupancy.

[0009] In the above-mentioned granulator reduction box, there are two lower output shafts and they are arranged horizontally and parallelly along the radial direction of the lower output shafts. The two lower output shafts are connected by a gear pair, and one of the lower output shafts is connected to the transmission shaft through the above-mentioned second gear reduction structure. In the actual product, the shaping mechanism includes two shaping rollers, and two lower output shafts are arranged to be directly connected to the two shaping rollers, which can effectively improve the transmission stability, reduce the failure rate, and further reduce the maintenance frequency.

[0010] In the above-mentioned granulator reduction box, the second gear reduction structure includes an intermediate shaft horizontally arranged in the box body, and the intermediate shaft is between the lower output shaft and the transmission shaft, a large gear 2 is arranged on the intermediate shaft, and an input pinion and an output pinion, both of which are meshed with the large gear 2, are respectively fixed on the front end of the transmission shaft and one of the lower output shafts, and the number of teeth of the input pinion is less than the number of teeth of the output pinion. The above-mentioned design has the advantages of simple structure and stable operation.

[0011] In the above-mentioned granulator reduction box, the gear pair includes a transmission gear and the above-mentioned output pinion, and the transmission gear and the output pinion are the same. The output pinion is used to connect the transmission shaft and the lower output shaft, and is also used to connect the two lower output shafts to simplify the structure and facilitate assembly.

[0012] In the above-mentioned granulator reduction box, two through holes are horizontally provided on the box body for the front ends of the two lower output shafts to extend out, and oil seals are provided in the two through holes to effectively enhance the sealing performance formed between the lower output shaft and the box body, further prevent dust from entering the box body, and reduce the maintenance frequency.

[0013] In the above-mentioned granulator reduction box, the input shaft is a gear shaft, and the first gear structure includes a large gear 1 fixed on the transmission shaft and meshing with the input shaft.

[0014] In the above-mentioned granulator reduction box, the transmission shaft is a gear shaft, and the third gear structure includes a large gear three fixed on the upper output shaft and meshing with the transmission shaft.

[0015] Compared with the existing technology, this granulator reducer has the following advantages:

[0016] 1. When in use, the upper input shaft and the lower input shaft are connected to the granulating mechanism and the shaping mechanism respectively, and the transmission parts used to drive the upper input shaft and the lower input shaft are arranged inside the box for protection, which can effectively reduce the maintenance frequency of the transmission parts and facilitate use and maintenance.

[0017] 2. The second input pinion is used for connecting the transmission shaft and the lower output shaft, and is also used for connecting the two lower output shafts to simplify the structure and facilitate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the granulator reducer.

[0019] Figure 2 It is a connection diagram of the upper output shaft, input shaft, intermediate shaft, transmission shaft and lower output shaft.

[0020] Figure 3 It is a cross-sectional schematic diagram of the granulator reduction box.

[0021] In the figure, 1. housing; 2. input shaft; 3. upper output shaft; 4. transmission shaft; 5. lower output shaft; 6. intermediate shaft; 7. large gear 2; 8. input pinion; 9. output pinion; 10. large gear 1; 11. large gear 3; 12. oil seal. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 and Figure 2 As shown, the granulator reduction box includes a box body 1 and an input shaft 2 and an upper output shaft 3 both horizontally rotatably arranged in the box body 1, the axes of the upper output shaft 3 and the input shaft 2 both extend forward and backward, and the front end of the upper output shaft 3 and the rear end of the input shaft 2 both extend out of the box body 1. In the actual product, the upper output shaft 3 and the input shaft 2 are both rotatably arranged in the box body 1 through bearings.

[0024] Specifically,

[0025] A transmission shaft 4 and a lower output shaft 5 are also horizontally rotatably arranged in the housing 1. The lower output shaft 5 is located below the upper output shaft 3, and the axes of the transmission shaft 4, the lower output shaft 5 and the upper output shaft 3 are arranged in parallel. The input shaft 2 is connected to the middle of the transmission shaft 4 through a first gear reduction structure, the front end of the transmission shaft 4 is connected to the rear end of the lower output shaft 5 through a second gear reduction structure, the rear end of the transmission shaft 4 is connected to the rear end of the upper output shaft 3 through a third gear reduction structure, and the front end of the lower output shaft 5 extends out of the housing 1.

[0026] When in use, the upper input shaft 2 and the lower input shaft 2 are connected to the granulating mechanism and the shaping mechanism respectively, and the transmission parts for driving the upper input shaft 2 and the lower input shaft 2 are arranged inside the box body 1 for protection, which can effectively reduce the maintenance frequency of the transmission parts and facilitate use and maintenance.

[0027] Further explanation: the input shaft 2, the transmission shaft 4 and the upper output shaft 3 are arranged horizontally in parallel, and the transmission shaft 4 is arranged between the input shaft 2 and the upper output shaft 3. This is convenient for layout, simplifies the structure, makes the transmission more stable, and can reduce the height of the reduction box, making the overall structure more compact and reducing space occupancy.

[0028] In this embodiment,

[0029] There are two lower output shafts 5 and they are arranged horizontally and parallelly along the radial direction of the lower output shaft 5. The two lower output shafts 5 are connected by a gear pair, and one of the lower output shafts 5 is connected to the transmission shaft 4 through a second gear reduction structure. In the actual product, the shaping mechanism includes two shaping rollers, and two lower output shafts 5 are arranged to be directly connected to the two shaping rollers, which can effectively improve the transmission stability, reduce the failure rate, and further reduce the maintenance frequency.

[0030] like Figure 2 and Figure 3 As shown, the second gear reduction structure includes an intermediate shaft 6 horizontally arranged in the housing 1, and the intermediate shaft 6 is between the lower output shaft 5 and the transmission shaft 4, a large gear 2 7 is arranged on the intermediate shaft 6, and an input pinion 8 and an output pinion 9, both meshing with the large gear 2 7, are respectively fixed on the front end of the transmission shaft 4 and one of the lower output shafts 5, and the number of teeth of the input pinion 8 is less than the number of teeth of the output pinion 9. The above design has the advantages of simple structure and stable operation.

[0031] The gear pair includes a transmission gear and an output pinion 9, and the transmission gear is identical to the output pinion 9. The output pinion 9 is used to connect the transmission shaft 4 and the lower output shaft 5, and is also used to connect the two lower output shafts 5, so as to simplify the structure and facilitate assembly.

[0032] The input shaft 2 is a gear shaft, and the first gear structure includes a large gear 10 fixed on the transmission shaft 4 and meshing with the input shaft 2. Naturally, fixing the gear on the input shaft 2 can also form the first gear structure. The transmission shaft 4 is a gear shaft, and the third gear structure includes a large gear 11 fixed on the upper output shaft 3 and meshing with the transmission shaft 4. Naturally, fixing the gear on the transmission shaft 4 can also form the third gear structure.

[0033] like Figure 1 and Figure 3As shown, two through holes are horizontally provided on the box body 1 for the front ends of the two lower output shafts 5 to extend out, and oil seals 12 are provided in the two through holes to effectively enhance the sealing performance formed between the lower output shaft 5 and the box body 1, further prevent dust from entering the box body 1, and reduce the maintenance frequency.

[0034] In the actual product, the transmission shaft 4 and the lower output shaft 5 are both rotatably arranged in the housing 1 through bearings; the intermediate shaft 6 is fixedly arranged, and the large gear 2 7 is rotatably arranged on the intermediate shaft 6 through bearings.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A granulator reduction box, comprising a box body (1), and an input shaft (2) and an upper output shaft (3) both horizontally arranged in the box body (1), wherein the front end of the upper output shaft (3) protrudes out of the box body (1), characterized in that: A transmission shaft (4) and a lower output shaft (5) are also horizontally rotatably arranged in the housing (1), and the axes of the transmission shaft (4), the lower output shaft (5) and the upper output shaft (3) are arranged in parallel; the input shaft (2) is connected to the middle of the transmission shaft (4) through a first gear reduction structure, the front end of the transmission shaft (4) is connected to the rear end of the lower output shaft (5) through a second gear reduction structure, the rear end of the transmission shaft (4) is connected to the rear end of the upper output shaft (3) through a third gear reduction structure, and the front end of the lower output shaft (5) protrudes out of the housing (1).

2. The granulator reduction box according to claim 1, characterized in that: The input shaft (2), the transmission shaft (4) and the upper output shaft (3) are arranged horizontally in parallel, and the transmission shaft (4) is arranged between the input shaft (2) and the upper output shaft (3).

3. The granulator reduction box according to claim 2, characterized in that: There are two lower output shafts (5) which are arranged horizontally and parallel to each other along the radial direction of the lower output shaft (5); the two lower output shafts (5) are connected via a gear pair, and one of the lower output shafts (5) is connected to the transmission shaft (4) via the above-mentioned second gear reduction structure.

4. The granulator reduction box according to claim 3, characterized in that: The second gear reduction structure comprises an intermediate shaft (6) arranged horizontally in the housing (1), and the intermediate shaft (6) is located between the lower output shaft (5) and the transmission shaft (4), a large gear (2) (7) is arranged on the intermediate shaft (6), and an input pinion (8) and an output pinion (9) which are both meshed with the large gear (2) (7) are respectively fixed on the front end of the transmission shaft (4) and one of the lower output shafts (5), and the number of teeth of the input pinion (8) is less than the number of teeth of the output pinion (9).

5. The granulator reduction box according to claim 4, characterized in that: The gear pair comprises a transmission gear and the above-mentioned output pinion (9), and the transmission gear and the output pinion (9) are identical.

6. The granulator reduction box according to claim 3, characterized in that: Two through holes are horizontally provided on the box body (1) for the front ends of the two lower output shafts (5) to extend out respectively, and oil seals (12) are provided in the two through holes.

7. The granulator reduction box according to claim 2, characterized in that: The input shaft (2) is a gear shaft, and the first gear structure comprises a large gear one (10) fixed on the transmission shaft (4) and meshing with the input shaft (2).

8. The granulator reduction box according to claim 7, characterized in that: The transmission shaft (4) is a gear shaft, and the third gear structure comprises a large gear three (11) fixed on the upper output shaft (3) and meshing with the transmission shaft (4).

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