Double-roller granulator and adjustable granulation mechanism thereof

Abstract

The utility model discloses a roller pelletizer and an adjustable pelletizing mechanism thereof, which comprise pelletizing rollers arranged in parallel, pelletizing holes are distributed on the pelletizing rollers, one end of each pelletizing roller is provided with a transmission gear, the transmission gears on the adjacent pelletizing rollers are meshed with each other, the transmission gears are detachably connected with the pelletizing rollers, and the pelletizing rollers are connected with the transmission gears. The proportion of the row number of the granulation holes in the granulation roller in the horizontal direction to the single tooth of the transmission gear is non-integer multiples, and the proportion of the row number of the granulation holes in the granulation roller in the horizontal direction to the single tooth of the transmission gear is non-integer multiples, so that the granulation roller is abraded when being used for a long time due to other factors such as pressure; when the granulation holes in the adjacent granulation rollers cannot be well aligned due to the fact that the transmission gear is detached to be disengaged but not disengaged from the shaft, the gear drives the shaft to rotate by a certain number of teeth, so that other tooth positions are engaged to make up for dislocation in the circumferential angle, the granulation holes can be aligned again, the regularity of the granulation shape is ensured, and the production efficiency is improved. And the granulation mechanism can be used continuously for a long time, and the product roundness is improved.

Description

Technical Field

[0001] The utility model relates to the field of granulators, in particular to a double-roll granulator and an adjustable granulating mechanism thereof. Background Art

[0002] The double-roll granulator is a molding machine that can make materials into specific shapes. It is widely used in agriculture, medicine and chemical industries, especially in the field of crop fertilizers, where finished products often need to be granulated. For example, in crop production and fertilization, in order to make chemical fertilizers decompose slowly and last longer, auxiliary materials are usually added to the fertilizers for granulation. There are many types of fertilizer granulators, and the double-roll granulator is currently a more commonly used granulation equipment.

[0003] After searching, the Chinese patent with the announcement number CN204208528U discloses an organic fertilizer double roller extrusion granulator, including a frame and a fixed roller and a movable roller arranged horizontally side by side in the frame, the fixed roller and the movable roller are driven by a transmission device to rotate in opposite directions, the circumferential surfaces of the fixed roller and the movable roller are respectively provided with grooves that form an extrusion granulation space with each other, the two ends of the movable roller are mounted on a movable bearing seat, the bottom surface of the movable bearing seat is provided with a horizontal chute parallel to the radial direction of the movable roller, and a convex block is provided inside the corresponding chute on the frame, and the movable bearing seat moves horizontally along the convex block through the chute. The radial gap between the fixed roller and the movable roller is adjustable, so organic fertilizer particles of different sizes can be extruded within a certain range, and at the same time, the size of the organic fertilizer particles produced after the groove is blocked can be ensured to remain unchanged.

[0004] However, in actual use, the granulation roller used for granulation may wear due to factors such as pressure, and then the granulation holes on the granulation roller may be misaligned, which ultimately leads to irregular shapes of the produced particles and affects the final granulation quality. Utility Model Content

[0005] In order to further ensure the regularity of the granulation shape, the present application provides an adjustable granulation mechanism.

[0006] The present application provides an adjustable granulation mechanism, which adopts the following technical solution:

[0007] An adjustable granulation mechanism comprises granulation rollers arranged in parallel, granulation holes are distributed on the granulation rollers, a transmission gear is arranged at one end of the granulation rollers, the transmission gears on adjacent granulation rollers are meshed with each other, the transmission gears are detachably connected to the granulation rollers, and the ratio of the number of rows of granulation holes on the granulation rollers in the horizontal direction to the single tooth of the transmission gear is a non-integer multiple.

[0008] Optionally, a spline is provided at the end of the granulating roller, and a keyway adapted to the spline is provided on the transmission gear.

[0009] Optionally, an annular groove is provided at the end of the granulating roller corresponding to the spline, and a retaining spring is installed at the annular groove to prevent the transmission gear from axially escaping.

[0010] Optionally, an outer cover is provided on the outside of the transmission gear, and the outer cover includes an upper cover and a lower cover spliced ​​up and down, and the upper cover and the lower cover are detachably connected.

[0011] Optionally, when one of the transmission gears slides axially and disengages from the other transmission gear, the transmission gear is still sleeved on the end of the granulating roller.

[0012] Optionally, it also includes a main body, the granulation roller is rotatably connected to the main body, the bottom of the main body is protruded with a mounting foot, the mounting foot is provided with a mounting hole, a cover plate is arranged between adjacent mounting feet, the cover plate has a through hole corresponding to the mounting hole, and the mounting hole and the through hole are penetrated with fasteners for connection and fixation.

[0013] The present application also provides a double-roll granulator, which has the advantage of being able to continuously maintain a regular granulation shape, and specifically adopts the following technical solution:

[0014] A double-roll granulator comprises the above-mentioned adjustable granulating mechanism, and also comprises a frame, a shaper and a driving source, wherein the driving source drives the granulating roller to rotate, the shaper is installed below the adjustable granulating mechanism, a discharge hopper is installed at the bottom of the shaper, and the bottom wall of the discharge hopper is inclined outward.

[0015] Optionally, the shaper includes shaping rollers and a screen arranged in parallel, the outer surface of the shaping roller is distributed with outwardly protruding shaping columns, the shaping columns on adjacent shaping rollers are staggered, and the screen is located below the shaping roller.

[0016] Optionally, a sprocket and a chain for transmitting the shaping roller and the granulating roller are arranged between the shaping roller and the granulating roller, and the sprocket is arranged at the ends of the shaping roller and the granulating roller.

[0017] Optionally, the driving source includes a motor and a reducer, the output end of the reducer is connected to the granulation roller, the motor and the input end of the reducer are connected through a belt drive, a mounting plate for installing the power supply motor is provided at the bottom of the frame, one side of the mounting plate is hinged to the frame, and an adjusting column passing through the mounting plate is provided on the frame, and an adjusting nut for supporting the mounting plate is threadedly connected to the adjusting column.

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

[0019] 1. Since the number of rows of granulation holes on the granulation roller in the horizontal direction is not an integer multiple of the single tooth ratio of the transmission gear, when the granulation roller is worn due to pressure and other factors during long-term use, resulting in the inability to align the granulation holes on adjacent granulation rollers well, the transmission gear can be removed to disengage, but not to disengage the shaft. The gear drives the shaft to rotate a certain number of teeth so that other teeth are engaged to compensate for the misalignment in the circumferential angle, so that the granulation holes can be realigned, ensuring the regularity of the granulation shape, so that the granulation mechanism can be used continuously for a long time, and the roundness of the product is improved;

[0020] 2. The transmission gear and the granulating roller are connected by splines to achieve circumferential transmission, which effectively improves the structural strength of the transmission and ensures the stability of the transmission;

[0021] 3. The transmission gear is axially limited by the ring groove and the clamping of the retaining spring. When adjustment is needed, it is only necessary to slide the transmission gear axially so that it is no longer engaged, and then rotate the angle and then slide it axially to reset and re-engage it, so as to realize the convenience of adjusting the circumferential angle of the granulating roller, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall structural diagram of Example 1.

[0023] Figure 2 It is a structural diagram of Example 1 after the protective cover is hidden.

[0024] Figure 3 This is a structural diagram of Example 2 from the first perspective.

[0025] Figure 4 It is a structural diagram of the second perspective of Example 2.

[0026] Figure 5 It is a stereoscopic diagram of the shaper in Example 2.

[0027] Description of reference numerals:

[0028] 1. Main body; 2. Granulating roller; 3. Granulating hole; 4. Transmission gear; 5. Spline; 6. Keyway; 7. Boss; 8. Ring groove; 9. Circlip; 10. Outer cover; 11. Upper cover; 12. Lower cover; 13. Mounting feet; 14. Cover plate; 15. Screws; 16. Frame; 17. Shaper; 18. Adjustable granulating mechanism; 19. Feed hopper; 20. Discharge hopper; 21. Motor; 22. Speed ​​reducer; 23. Shaping roller; 24. Screen; 25. Bearing seat; 26. Screen hole; 27. Sprocket; 28. Chain; 29. ​​Mounting plate; 30. Adjusting column; 31. Through slot; 32. Adjusting nut; 33. Belt. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] Example 1

[0031] An adjustable granulation mechanism, such as Figure 1 and Figure 2 As shown, it includes a main body 1 and a granulating roller 2. Two granulating rollers 2 are arranged in parallel and rotatably connected to the main body 1. A plurality of concave granulating holes 3 are densely distributed on the surface of the granulating roller 2. The shape of the granulating holes 3 is hemispherical. In actual use, the material falls from the middle and upper part of the two granulating rollers 2, and then passes through the two pairs of granulating rollers 2. The granulating holes 3 of the two adjacent granulating rollers 2 are correspondingly spliced ​​to form a nearly spherical shape to squeeze the material into granules to complete granulation and fall.

[0032] like Figure 1 and Figure 2 As shown, a transmission gear 4 is provided at one end of each of the two granulating rollers 2, and adjacent transmission gears 4 mesh with each other to realize transmission, that is, only one of the granulating rollers 2 needs to be driven to rotate to drive the other granulating roller 2 to rotate synchronously in the opposite direction, and the transmission gear 4 is detachably connected to the granulating roller 2. In this embodiment, a spline 5 is provided at the end of the granulating roller 2, and a keyway 6 cooperating with the spline 5 is provided on the transmission gear 4. The circumferential linkage is realized by connecting with the spline 5, and the high structural strength of the spline 5 ensures the stability of the circumferential linkage. The transmission gear 4 can be slidably adjusted along the circumference of the granulating roller 2. In this embodiment, a boss 7 and an annular groove 8 are provided on the end of the granulating roller 2, the boss 7 abuts one side of the transmission gear 4, the annular groove 8 is located on the other side of the transmission gear 4, and a retaining spring 9 fixed thereto is installed on the annular groove 8, and the retaining spring 9 abuts the side of the transmission gear 4 away from the boss 7 to realize axial limitation of the transmission gear 4.

[0033] like Figure 1 and Figure 2As shown, the granulation holes 3 are horizontally spaced on the granulation roller 2, and there are multiple rows of granulation holes 3 distributed around the granulation roller 2. In this embodiment, the number of rows of granulation holes 3 on the granulation roller 2 in the horizontal direction is a non-integer multiple of the ratio of the single tooth of the transmission tooth. In this way, when the granulation roller 2 is worn due to other factors such as pressure during long-term use, resulting in the granulation holes 3 on adjacent granulation rollers 2 being unable to be well aligned in the circumferential angle, the transmission gear 4 can be disassembled to disengage, but not to disengage the shaft. The gear drives the shaft and moves axially in the disengaged state, and then the transmission gear 4 is rotated by a certain angle. The degree allows other teeth to mesh to compensate for the misalignment in the circumferential angle, so that the granulation hole 3 can be realigned, ensuring the regularity of the granulation shape, so that the granulation mechanism can be used continuously for a long time, and the roundness of the product is improved. In this embodiment, the disassembly and adjustment operation of the transmission gear 4 is placed on the driven granulation roller 2; in addition, in this embodiment, when the axially sliding transmission gear 4 is disengaged, the transmission gear 4 is still sleeved on the granulation roller 2 and can be directly rotated to adjust the angle and then axially slid back, which is convenient for the direct rotation adjustment of the transmission gear 4 and effectively improves the convenience of the adjustment operation.

[0034] like Figure 1 As shown, an outer cover 10 for protecting the transmission gear 4 is provided on the outside thereof, and the outer cover 10 includes an upper cover 11 and a lower cover 12 spliced ​​together. With the help of the outer cover 10, the transmission gear 4 can be concealed inside, thereby improving the safety of use and also protecting the transmission gear 4. The upper cover 11 and the lower cover are detachably connected by screws 15 or bolts.

[0035] like Figure 1 and Figure 2 As shown, at the bottom of the main body 1, there are four protruding mounting feet 13, and the mounting feet 13 are all provided with mounting holes. At the same time, a cover plate 14 connecting the two adjacent mounting feet 13 is provided between the two adjacent mounting feet 13, and the cover plate 14 is provided with through holes corresponding to the mounting holes. During actual use, the main body 1 is installed and fixed by fasteners passing through the mounting holes. The setting of the cover plate 14 can connect the two adjacent mounting feet 13 to improve the structural strength, and the cover plate 14 can play a shielding role to reduce the effect of foreign objects entering the interior through this place. The actual fasteners can be screws 15, and the screws 15 are connected and fixed through the through holes and the mounting holes, so that the installation of the main body 1 is achieved while the cover plate 14 is fixed simultaneously, which simplifies the structure and improves the installation efficiency.

[0036] Example 2

[0037] A double roller granulator, such as Figure 3-Figure 5As shown, it includes a frame 16, a shaper 17, a driving source and embodiment 1, the shaper 17 is installed below the adjustable granulating mechanism 18, and a feed hopper 19 for feeding is fixedly arranged on the top of the adjustable granulating mechanism 18, and a discharge hopper 20 for discharging is fixedly arranged below the frame 16 corresponding to the shaper 17, and the bottom wall of the discharge hopper 20 is inclined outward. In actual use, the raw material enters from the feed hopper 19 and falls into the adjustable granulating mechanism 18 for granulation. The granulated material falls to the shaper 17 to be broken up so that the material particles are independent, and finally discharged through the discharge hopper 20. The design of the discharge hopper 20 facilitates the discharge and collection of the material.

[0038] like Figure 3 and Figure 4 As shown, the driving source includes a motor 21 and a reducer 22. The reducer 22 is arranged on one side of the adjustable granulating mechanism 18. The motor 21 is connected to the input end of the reducer 22 through a belt drive, and the output end of the reducer 22 is connected to one of the granulating rollers 2. In this way, the granulating roller 2 can be driven to rotate by the motor 21 to achieve granulation.

[0039] like Figure 5 As shown, the shaper 17 includes a shaping roller 23, a screen 24 and bearing seats 25 at both ends. Two shaping rollers 23 are arranged in parallel and are rotatably connected to the bearing seats 25. The screen 24 is fixed to the bearing seats 25. The shaping roller 23 is located inside the screen 24. The side walls and bottom walls of the screen 24 are provided with densely distributed screen holes 26. A plurality of evenly distributed shaping columns are convexly provided on the shaping roller 23. The shaping columns on adjacent shaping rollers 23 are staggered, so that the two shaping rollers 23 can be arranged closer, and the materials around them can be more fully contacted to achieve better In order to achieve the breaking up effect, mutually meshing transmission gears 4 are also arranged at one end of the two shaping rollers 23 to realize the synchronous reverse rotation of the two shaping rollers 23, and a sprocket 27 is arranged at the end of one of the shaping rollers 23 away from the transmission gear 4. At the same time, a sprocket 27 is also arranged on one of the granulating rollers 2, and then the two sprockets 27 are connected and transmitted through a chain 28. The granulating roller 2 transmits power to the shaping roller 23 during the rotation. In this way, only one driving source is needed to realize the synchronous rotation of the granulating roller 2 and the shaping roller 23, which simplifies the structure and effectively reduces the production cost.

[0040] like Figure 3 and Figure 4As shown, a mounting plate 29 for mounting the power supply machine 21 is provided at the bottom of the frame 16, one side of the mounting plate 29 is hinged on the frame 16, and an adjusting column 30 is provided on the side of the frame 16 corresponding to the mounting plate 29 away from the hinge. The adjusting column 30 is in the shape of an arc and passes through the mounting plate 29, and the mounting plate 29 has a through slot 31 for the adjusting column 30 to pass through. The cross-sectional area of ​​the through slot 31 is larger than the cross-sectional area of ​​the adjusting column 30, and at the same time, an adjusting nut 32 for supporting the mounting plate 29 is threadedly connected to the adjusting column 30. In this way, when the belt 33 used for transmission of the motor 21 becomes loose due to long-term use, the mounting plate 29 can be driven to flip and adjust by rotating the adjusting nut 32, so as to adjust the height of the motor 21, and finally adjust the tension state of the belt 33, so as to ensure that the belt 33 is always in a good tension state and the transmission effect is good.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable granulation mechanism, comprising granulation rollers (2) arranged in parallel, wherein granulation holes (3) are distributed on the granulation rollers (2), characterized in that: A transmission gear (4) is provided at one end of the granulation roller (2), the transmission gears (4) on adjacent granulation rollers (2) mesh with each other, the transmission gear (4) and the granulation roller (2) are detachably connected, and the number of rows of granulation holes (3) in the horizontal direction on the granulation roller (2) and the ratio of a single tooth of the transmission gear (4) are non-integer multiples.

2. The adjustable granulation mechanism according to claim 1, characterized in that: The end of the granulating roller (2) is provided with a spline (5), and the transmission gear (4) has a keyway (6) adapted to the spline (5).

3. The adjustable granulation mechanism according to claim 2, characterized in that: An annular groove (8) is provided at the end of the granulating roller (2) corresponding to the spline (5), and a retaining spring (9) is installed at the annular groove (8) to prevent the transmission gear (4) from axially escaping.

4. The adjustable granulation mechanism according to claim 1, characterized in that: An outer cover (10) is arranged outside the transmission gear (4), and the outer cover (10) comprises an upper cover (11) and a lower cover (12) which are spliced ​​together, and the upper cover (11) and the lower cover (12) are detachably connected.

5. The adjustable granulation mechanism according to claim 1, characterized in that: When one of the transmission gears (4) slides axially and disengages from the other transmission gear (4), the transmission gear (4) is still sleeved on the end of the granulating roller (2).

6. The adjustable granulation mechanism according to claim 1, characterized in that: The invention also comprises a main body (1), the granulating roller (2) is rotatably connected to the main body (1), a mounting foot (13) is protruding from the bottom of the main body (1), a mounting hole is provided on the mounting foot (13), a cover plate (14) is arranged between adjacent mounting feet (13), the cover plate (14) has a through hole corresponding to the mounting hole, and fasteners for connection and fixing are inserted through the mounting hole and the through hole.

7. A double-roll granulator, characterized in that: It comprises the adjustable granulating mechanism (18) as described in any one of claims 1 to 6, and also comprises a frame (16), a shaper (17) and a driving source, wherein the driving source drives the granulating roller (2) to rotate, the shaper (17) is installed below the adjustable granulating mechanism (18), and a discharge hopper (20) is installed at the bottom of the shaper (17), and the bottom wall of the discharge hopper (20) is inclined outward.

8. The double-roll granulator according to claim 7, characterized in that: The shaper (17) comprises shaping rollers (23) and a screen (24) arranged in parallel, the outer surface of the shaping roller (23) is distributed with outwardly convex shaping columns, the shaping columns on adjacent shaping rollers (23) are staggered, and the screen (24) is located below the shaping roller (23).

9. The double-roll granulator according to claim 8, characterized in that: A sprocket (27) and a chain (28) for transmitting the shaping roller (23) and the granulating roller (2) are arranged between the shaping roller (23) and the granulating roller (2). The sprocket (27) is arranged at the ends of the shaping roller (23) and the granulating roller (2).

10. The double-roll granulator according to claim 7, characterized in that: The driving source comprises a motor (21) and a reducer (22); the output end of the reducer (22) is connected to the granulating roller (2); the motor (21) and the input end of the reducer (22) are connected via a belt drive; a mounting plate (29) for mounting the power supply machine (21) is provided at the bottom of the frame (16); one side of the mounting plate (29) is hinged to the frame (16); an adjusting column (30) passing through the mounting plate (29) is provided on the frame (16); an adjusting nut (32) for supporting the mounting plate (29) is threadedly connected to the adjusting column (30).

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