Drum mixer for producing blended chemical fertilizer

Abstract

The utility model discloses a drum mixer for producing a blended chemical fertilizer, and belongs to the technical field of mixers. The problem that in the prior art, a roller mixer for producing blended chemical fertilizers is uneven in stirring is solved. The device mainly comprises a roller, a discharger is arranged at the front end of the roller and comprises a cylindrical shell, a front plate and a rear plate are installed at the front end and the rear end of the shell respectively, a discharging motor is arranged on the front side of the front plate and is in transmission connection with a discharging shaft, and the discharging shaft is rotationally connected with the front plate through a bearing. A disc is arranged in the shell, a discharging cavity is formed between the disc and the rear plate, and a feeding port and a discharging port are formed in the positions, on the upper side and the lower side of the discharging cavity, of the shell correspondingly. A protrusion is arranged in the middle of the rear end face of the disc and connected with a plurality of partition plates at intervals in the circumferential direction, a stirring cavity is formed between every two adjacent partition plates, and a discharging shaft is fixedly connected to the middle of the front end face of the disc.

Description

Technical Field

[0001] This utility model belongs to the field of mixer technology, and more specifically, it relates to a drum mixer for the production of blended fertilizers. Background Technology

[0002] Blended fertilizers are fertilizers made by physically mixing two or more single-element fertilizers (such as urea, diammonium phosphate, potassium chloride, etc.) in a certain proportion. The core feature of blended fertilizers is that the nutrients can be flexibly adjusted according to crop needs and soil conditions, making them an important carrier for achieving precision fertilization.

[0003] In the production of blended fertilizers, multiple fertilizers are first stored separately in independent silos. These silos are then fed into conveyors via metering equipment. The conveyors then transport the fertilizers to a mixer for mixing. After mixing, the blended fertilizer is packaged. Drum mixers are frequently used in the production of blended fertilizers, enabling continuous mixing. However, drum mixers often experience uneven mixing when mixing multiple fertilizers. To improve mixing quality, the tilt angle of the drum conveyor is sometimes reduced to increase the residence time of the fertilizer in the mixer, but this reduces production efficiency. Furthermore, drum mixers have a weak ability to break up clumps of fertilizer, which affects the quality of the blended fertilizer. Summary of the Invention

[0004] The purpose of this invention is to provide a drum mixer for the production of blended fertilizers, so as to overcome the problem of uneven mixing in existing drum mixers for the production of blended fertilizers.

[0005] This utility model is achieved using the following technical solution: a drum mixer for blended fertilizer production, comprising a drum, the drum being rotatably mounted on a drum support and driven to rotate by a drum motor, a feeder being provided at the front end of the drum, the feeder comprising a cylindrical shell, a front plate and a rear plate being respectively installed at the front and rear ends of the shell, a feeder motor being provided on the front side of the front plate, the feeder motor being drively connected to a feeder shaft, the feeder shaft being rotatably connected to the front plate through a bearing, a disc being provided inside the shell, and a gap being formed between the disc and the rear plate. The feeding chamber has an inlet and a outlet on its upper and lower sides, respectively. A protrusion is provided in the middle of the rear end face of the disc. Multiple partitions are connected at intervals along the circumference of the protrusion. A stirring chamber is formed between two adjacent partitions. A feeding shaft is fixedly connected to the middle of the front end face of the disc. A stirring shaft is rotatably installed in the middle of each stirring chamber. A stirring blade is installed at the rear end of the stirring shaft and is set in the stirring chamber. A planetary gear is installed at the front end of the stirring shaft. An internal gear ring that meshes with the planetary gear is fixedly installed on the outside of the planetary gear on the front plate.

[0006] Furthermore, the housing is fixedly mounted on the feeding bracket, and the feeding motor is also fixedly mounted on the feeding bracket.

[0007] Furthermore, a slewing bearing is installed inside the housing on the outside of the disk. The slewing bearing includes an outer ring and an inner ring rotatably connected to the outer ring. The inner ring is fixedly connected to the disk, and the outer ring is fixedly connected to the housing.

[0008] Furthermore, the protrusion is connected to four partitions at intervals along the circumferential direction, and the included angle between any two adjacent partitions is equal.

[0009] Furthermore, a feed hopper is installed on the feed inlet.

[0010] Furthermore, a feeding hopper is installed on the feeding port.

[0011] Furthermore, the roller is inclined downwards in the direction from the feed end to the discharge end.

[0012] Furthermore, the inner wall of the roller is fitted with a guide plate with a spiral structure.

[0013] Furthermore, a cylindrical screen is fixedly connected to the rear end of the roller, and a collecting cylinder is fitted on the outside of the screen. The screen is inside the collecting cylinder, and a front sealing plate and a rear sealing plate are respectively installed at the front and rear ends of the collecting cylinder. The collecting cylinder is mounted on a collecting cylinder support, and a discharge port is opened at the bottom of the collecting cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting a feeder, can perform preliminary mixing of various fertilizers that have not yet entered the drum, thereby effectively enhancing the continuous mixing effect of the drum mixer. The mixing blades in the feeder can also break up clumps of fertilizer while mixing.

[0016] 2. This utility model uses a cylindrical screen connected to the rear end of the drum to filter the blended fertilizer flowing out of the drum. This allows small fragments and powders in the blended fertilizer to enter the collection cylinder through the screen and finally flow out from the outlet of the collection cylinder, thereby effectively reducing the small fragments and powders in the blended fertilizer. Attached Figure Description

[0017] Figure 1 and Figure 2 These are perspective views of this utility model;

[0018] Figure 3 This is a schematic diagram of the feeder described in this utility model;

[0019] Figure 4 This is a schematic diagram of the feeder of this utility model without the rear plate installed;

[0020] Figure 5 This is a partial cross-sectional view of the feeder described in this utility model.

[0021] In the diagram: 1. Drum; 2. Drum support; 3. Drum motor; 4. Feeder; 5. Housing; 6. Front plate; 7. Rear plate; 8. Feeder motor; 9. Feeder shaft; 10. Disc; 11. Feeding chamber; 12. Feed inlet; 13. Feed outlet; 14. Protrusion; 15. Partition; 16. Mixing chamber; 17. Mixing shaft; 18. Mixing blades; 19. Planetary gear; 20. Internal gear ring; 21. Feeder support; 22. Outer ring; 23. Inner ring; 24. Feed hopper; 25. Feed hopper; 26. Guide plate; 27. Screen; 28. Collection cylinder; 29. ​​Rear sealing plate; 30. Collection cylinder support; 31. Discharge outlet. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.

[0023] A drum mixer for blended fertilizer production includes a drum 1, which is rotatably mounted on a drum support 2 and driven to rotate by a drum motor 3. The drum support 2 has supports installed at both ends of the drum 1, and support wheels are installed on both sides of the drum 1 on the supports. The drum 1 is rotatably mounted on the support wheels of the supports. An external gear ring is installed in the middle of the drum 1. The drum motor 3 is connected to a drive gear meshing with the external gear ring, and the drum motor 3 drives the drum 1 to rotate through the drive gear.

[0024] The inner wall of the drum 1 is equipped with a spiral-shaped guide plate 26; the drum 1 is inclined downwards from the feed end to the discharge end. This invention improves the mixing effect of various fertilizers in the drum 1 by installing the guide plate 26. By tilting the drum 1, this invention facilitates the movement of various fertilizers towards the discharge end of the drum 1.

[0025] The front end of the roller 1 is provided with a feeder 4, which includes a cylindrical housing 5. A front plate 6 and a rear plate 7 are respectively installed at the front and rear ends of the housing 5. In this invention, the front plate 6 is fixed to the housing 5 by welding, and the rear plate 7 is connected to the housing 5 by bolts to achieve a detachable connection between the rear plate 7 and the housing 5. The housing 5 is fixedly installed on the feeder bracket 21.

[0026] The front side of the front plate 6 is provided with a feeding motor 8, which is fixedly installed on the feeding bracket 21. The feeding motor 8 is connected to the feeding shaft 9, which passes through the front plate 6 and is rotatably connected to the front plate 6 through a bearing. The feeding motor 8 can drive the feeding shaft 9 to rotate.

[0027] A disc 10 is disposed inside the housing 5, forming a discharge chamber 11 between the disc 10 and the rear plate 7. The housing 5 has an inlet 12 and a discharge outlet 13 on the upper and lower sides of the discharge chamber 11, respectively. A feed hopper 24 is installed on the feed inlet 12, and a discharge hopper 25 is installed on the discharge outlet 13. During the production of blended fertilizers, multiple fertilizers are simultaneously conveyed by a conveyor to the feed hopper 24 on the feed inlet 12, and fall from the feed inlet 12 into the discharge chamber 11, finally entering the roller 1 from the discharge outlet 13 at the bottom of the discharge chamber 11. This invention, by providing the feed hopper 24 and the discharge hopper 25, facilitates the feeding and discharging of fertilizers into the feeder 4.

[0028] The rear end face of the disk 10 has a protrusion 14 at the center. Multiple partitions 15 are spaced apart along the circumference of the protrusion 14. A stirring chamber 16 is formed between two adjacent partitions 15. The inner ends of each partition 15 point towards the axis of the disk 10. The stirring chamber 16 between two adjacent partitions 15 is a fan-shaped space. The partitions 15 are connected to the protrusion 14 by welding. Four partitions 15 are spaced apart along the circumference of the protrusion 14, with equal included angles between any two adjacent partitions 15.

[0029] The feeding shaft 9 is fixedly connected to the middle of the front end face of the disc 10. When the feeding motor 8 drives the feeding shaft 9 to rotate, the feeding shaft 9 will simultaneously drive the disc 10 to rotate.

[0030] Each of the discs 10 has a stirring shaft 17 rotatably mounted in the middle of each stirring chamber 16. A bearing can be installed between the stirring shaft 17 and the disc 10. In this invention, each stirring chamber 16 corresponds to one stirring shaft 17.

[0031] The rear end of the stirring shaft 17 is fixedly installed with stirring blades 18 disposed in the stirring chamber 16. When multiple fertilizers fall into the stirring chamber 16, the stirring blades 18 can be pre-stirred by rotation. At the same time, the stirring blades 18 can also break up clumps of fertilizer.

[0032] A planetary gear 19 is fixedly mounted on the front end of the stirring shaft 17, and an internal gear ring 20 that meshes with the planetary gear 19 is fixedly mounted on the outside of the front plate 6. In this invention, all planetary gears 19 are located within and mesh with the internal gear ring 20. The internal gear ring 20 and the front plate 6 can be fixed by welding, and the axes of the internal gear ring 20, the feeding shaft 9, and the turntable coincide. During the rotation of the feeding shaft 9 and the drive disc 10, the stirring shaft 17 on the disc 10 will simultaneously rotate around the axis of the feeding shaft 9. While the stirring shaft 17 is rotating, it will drive the planetary gear 19 fixedly connected to it to rotate around the axis of the feeding shaft 9. During the rotation of the planetary gear 19 around the axis of the feeding shaft 9, since the internal gear ring 20 is fixed and meshes with the planetary gear 19, the planetary gear 19 will rotate under the action of the internal gear ring 20. During the rotation of the planetary gear 19, it will drive the stirring shaft 17 to rotate around its own axis. While the stirring shaft 17 is rotating around its own axis, it will drive the stirring blade 18 connected to it to rotate. During the rotation of the stirring blade 18, it will pre-stir the various fertilizers in the stirring chamber 16.

[0033] A slewing bearing is installed inside the housing 5 on the outer side of the disk 10. The slewing bearing includes an outer ring 22 and an inner ring 23 rotatably connected to the outer ring 22. The inner ring 23 is fixedly connected to the disk 10, and the outer ring 22 is fixedly connected to the housing 5. By setting a slewing bearing, this invention can improve the stability of the turntable during rotation.

[0034] The rear end of the roller 1 is fixedly connected to a cylindrical screen 27. A collection cylinder 28 is fitted on the outside of the screen 27. The screen 27 is inside the collection cylinder 28. A front sealing plate and a rear sealing plate 29 are respectively installed at the front and rear ends of the collection cylinder 28. The collection cylinder 28 is mounted on a collection cylinder support 30. A discharge port 31 is opened at the bottom of the collection cylinder 28.

[0035] The screen 27 of this invention rotates with the drum 1. The blended fertilizer enters the screen 27 from the discharge end of the drum 1. Fine particles and powder from the granular blended fertilizer enter the collecting cylinder 28 through the screen holes of the screen 27 and eventually flow out from the discharge port 31 at the bottom of the collecting cylinder 28. The collecting cylinder 28 is fixedly installed on the collecting cylinder support 30 and does not rotate with the drum 1. This invention effectively prevents powder from flowing out from both ends between the collecting cylinder 28 and the screen 27 by setting a front sealing plate and a rear sealing plate 29. There is a certain gap between the inner side of the front sealing plate and the inner side of the rear sealing plate 29 and the screen 27.

[0036] The working process of this utility model is as follows: When continuously mixing the blended fertilizers, the drum motor 3 and the feeding motor 8 are turned on simultaneously. Then, the multiple fertilizers are simultaneously conveyed into the feed hopper 24 by the conveyor. The multiple fertilizers enter the mixing chamber 16 in the feeding chamber 11 through the feed hopper 24. Since the feeding motor 8 drives the disc 10 to rotate through the feeding shaft 9, the multiple fertilizers entering the mixing chamber 16 will rotate from the feed port 12 to the discharge port 13. During this rotation, the mixing blades 18 will rotate around the axis of the mixing shaft 17, so that the mixing blades 18 will simultaneously mix the multiple fertilizers in the mixing chamber 16, so that the multiple fertilizers are pre-mixed and the clumps of fertilizers can be broken up.

Claims

1. A drum mixer for blending fertilizers, comprising a drum (1) which is rotatably mounted on a drum support (2) and is driven to rotate by a drum motor (3), characterized in that, The front end of the roller (1) is provided with a feeder (4), the feeder (4) comprises a cylindrical shell (5), the front and rear ends of the shell (5) are respectively provided with a front plate (6) and a rear plate (7), the front side of the front plate (6) is provided with a feeding motor (8), the feeding motor (8) is drivingly connected with a feeding shaft (9), the feeding shaft (9) is rotatably connected with the front plate (6) through a bearing, a disc (10) is arranged in the shell (5), a feeding cavity (11) is formed between the disc (10) and the rear plate (7), the shell (5) is provided with an inlet (12) and a feeding outlet (13) on the upper and lower sides of the feeding cavity (11) respectively; the middle part of the rear end face of the disc (10) is provided with a protrusion (14), the protrusion (14) is connected with a plurality of partition plates (15) in the circumferential direction, one stirring cavity (16) is formed between every two adjacent partition plates (15), the middle part of the front end face of the disc (10) is fixedly connected with the feeding shaft (9), a stirring shaft (17) is rotatably arranged in the middle part of each stirring cavity (16), the rear end of the stirring shaft (17) is provided with a stirring blade (18) arranged in the stirring cavity (16), the front end of the stirring shaft (17) is provided with a planetary gear (19), the front plate (6) is fixedly provided with an internal gear ring (20) outside the planetary gear (19), the internal gear ring (20) is engaged with the planetary gear (19).

2. The drum mixer for producing a blended fertilizer according to claim 1, characterized by The shell (5) is fixedly arranged on a feeding support (21), and the feeding motor (8) is also fixedly arranged on the feeding support (21).

3. The drum mixer for producing a blended fertilizer according to claim 1, wherein A slewing bearing is arranged in the shell (5) outside the disc (10), the slewing bearing comprises an outer ring (22) and an inner ring (23) rotatably connected with the outer ring (22), the inner ring (23) is fixedly connected with the disc (10), and the outer ring (22) is fixedly connected with the shell (5).

4. The drum mixer for producing a blended fertilizer according to claim 1, wherein The protrusion (14) is connected with four partition plates (15) in the circumferential direction, and the included angle between every two adjacent partition plates (15) is equal.

5. The drum mixer for producing a blended fertilizer according to claim 1, wherein The inlet (12) is provided with a feeding hopper (24).

6. The drum mixer for producing a blended fertilizer according to claim 1, wherein The feeding outlet (13) is provided with a feeding hopper (25).

7. The drum mixer for producing a blended fertilizer according to claim 1, wherein The roller (1) is downwardly inclined from the feeding end to the discharging end.

8. The drum mixer for producing a blended fertilizer according to claim 1, wherein A guide plate (26) in a spiral structure is arranged on the inner wall of the roller (1).

9. The drum mixer for producing a blended fertilizer according to claim 1, wherein A cylindrical screen (27) is fixedly connected with the rear end of the roller (1), the outer side of the screen (27) is sleeved with a collecting cylinder (28), the screen (27) is arranged in the collecting cylinder (28), front and rear blocking plates (29) are arranged at the front and rear ends of the collecting cylinder (28) respectively, the collecting cylinder (28) is arranged on a collecting cylinder support (30), and a discharging outlet (31) is arranged at the bottom of the collecting cylinder (28).

Images