High-performance diuron wettable powder production ultrafine grinding system

Abstract

This invention discloses a high-performance ultrafine pulverization system for producing diuron wettable powder, comprising a pre-crushing mechanism and an ultrafine pulverization mechanism. The ultrafine pulverization mechanism includes a crushing chamber with a collection hopper at its bottom and a powder elevator at its bottom. The pre-crushing mechanism includes a pre-crushing tank fixed to the top of the crushing chamber, with a horizontal feeding pipe installed at its bottom. One end of the horizontal feeding pipe has a first discharge port. A feed bend is installed on one side of the crushing chamber, with a feed hopper fixed to its top. The first discharge port is aligned with the feed hopper. This invention employs a four-layer nested drive shaft design, using differentiated transmission between the fifth and sixth bevel gears to achieve reverse rotation characteristics and alternating fast and slow speeds. This allows the first and second crushing blades to form a three-dimensional cross-shear trajectory, significantly increasing the contact probability between the material and the blades and improving crushing efficiency.

Description

Technical Field

[0001] This invention relates to the field of diuron wettable powder production technology, and in particular to a high-performance ultrafine pulverization system for diuron wettable powder production. Background Technology

[0002] In the production of diuron wettable powder, ultrafine grinding is a crucial step that determines product performance. It requires the material particle size to reach the micron level and be uniformly distributed to ensure the suspension, dispersibility, and efficacy of the agent. However, existing grinding systems suffer from the following technical challenges:

[0003] 1. Insufficient pre-crushing: Traditional single-stage crushing equipment has poor initial fine-refinement effect on large raw materials, resulting in large particle size differences. This leads to excessively high load and increased energy consumption in subsequent ultrafine grinding, and is prone to uneven phenomena such as over-crushing or under-crushing.

[0004] 2. Low crushing efficiency: The crushing components mostly rotate in one direction, the shearing force is singular, the material is prone to form a circulation in the crushing chamber, the probability of contact with the blade is low, and the crushing cycle is long;

[0005] 3. Material residue and waste: Raw materials tend to stick to the inner wall of the crushing tank, which not only causes material waste, but also affects the stability of equipment operation due to long-term accumulation and increases cleaning and maintenance costs;

[0006] Therefore, considering the physical characteristics of diuron wettable powder raw material (moderate hardness, easy agglomeration), developing an ultrafine pulverizing system that combines efficient pre-crushing, uniform finening, low residue and continuous conveying functions has become the key to improving production efficiency and product quality. Summary of the Invention

[0007] To address the problems mentioned in the background section, this invention provides a high-performance ultrafine pulverizing system for producing diuron wettable powder.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-performance ultrafine pulverizing system for producing diuron wettable powder includes a pre-crushing mechanism and an ultrafine pulverizing mechanism. The ultrafine pulverizing mechanism includes a crushing chamber with a collection hopper at the bottom and a powder elevator at the bottom of the collection hopper. The pre-crushing mechanism includes a pre-crushing tank fixed to the top of the crushing chamber, with a horizontal feeding pipe installed at the bottom of the pre-crushing tank. One end of the horizontal feeding pipe has a first discharge port. A feed bend is installed on one side of the crushing chamber, with a feed hopper fixed to the top of the feed bend, and the first discharge port is aligned with the feed hopper.

[0010] Preferably, the powder elevator includes an inclined lifting tube, a horizontal feeding tube, and a feeding screw installed inside the inclined lifting tube. A first rotary motor is fixed at the end of the horizontal feeding tube away from the first discharge port, and the first rotary motor drives the feeding screw inside the horizontal feeding tube to rotate.

[0011] Preferably, a second rotary motor is fixed at one end of the inclined lifting pipe near the hopper, the second rotary motor drives the feeding screw inside the inclined lifting pipe to rotate, and a second discharge port is provided below the end of the inclined lifting pipe away from the second rotary motor.

[0012] Preferably, a first drive shaft, a second drive shaft, a third drive shaft, and a fourth drive shaft are rotatably mounted inside the pre-crushing tank. The second drive shaft is rotatably sleeved outside the first drive shaft, the third drive shaft is rotatably sleeved outside the second drive shaft, and the fourth drive shaft is rotatably sleeved outside the third drive shaft.

[0013] Preferably, the top ends of the first drive shaft, the second drive shaft, the third drive shaft and the fourth drive shaft extend into the drive box at the top of the pre-crushing tank. A first bevel gear is fixed to the outside of the first drive shaft, a second bevel gear is fixed to the outside of the second drive shaft, a third bevel gear is fixed to the outside of the third drive shaft, and a fourth bevel gear is fixed to the outside of the fourth drive shaft.

[0014] Preferably, a third rotary motor is fixed on the outer wall of the drive box, and the output shaft of the third rotary motor extends into the drive box and is fixed with a fifth bevel gear and a sixth bevel gear, wherein the diameter of the fifth bevel gear is larger than the diameter of the sixth bevel gear.

[0015] Preferably, the first bevel gear, the second bevel gear, the third bevel gear, and the fourth bevel gear are distributed from top to bottom, and the first bevel gear and the fourth bevel gear mesh with the fifth bevel gear, and the second bevel gear and the third bevel gear mesh with the sixth bevel gear.

[0016] Preferably, the bottom end of the fourth drive shaft is fixed with multiple first inclined connecting frames, a cleaning scraper is fixed on the first inclined connecting frame, and a first crushing blade is fixed on the side of the cleaning scraper away from the inner wall of the pre-crushing tank. The bottom end of the third drive shaft is fixed with a second inclined connecting frame, and a first crushing shaft is rotatably mounted on the second inclined connecting frame.

[0017] Preferably, a third inclined connecting frame is fixed to the bottom end of the second drive shaft, and a second crushing shaft is rotatably mounted on the third inclined connecting frame. A third crushing shaft is fixed to the bottom end of the first drive shaft, and second crushing blades are fixed to the outside of the first crushing shaft, the second crushing shaft, and the third crushing shaft.

[0018] Preferably, a first fixing ring is fixed on the first inclined connecting frame, a first toothed ring is fixed at the bottom end of the first fixing ring, a first spur gear is fixed at the top end of the first crushing shaft, and the first spur gear meshes with the first toothed ring; a second fixing ring is fixed on the third inclined connecting frame, a second toothed ring is fixed at the bottom end of the second fixing ring, and a second spur gear is fixed at the top end of the second crushing shaft, and the second spur gear meshes with the second toothed ring.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The four-layer nested drive shaft design is adopted. Through the differentiated transmission of the fifth and sixth bevel gears, the rotation characteristics of "inner and outer opposite, fast and slow alternation" are realized, so that the first crushing blade and the second crushing blade form a three-dimensional cross shearing trajectory, which greatly increases the contact probability between the material and the blade and improves the crushing efficiency. The compound motion of the revolution and rotation of the first crushing shaft and the second crushing shaft further refines the shearing frequency.

[0021] 2. The cleaning scraper driven by the fourth drive shaft rotates close to the inner wall of the pre-crushing tank, which can scrape off the adhering raw materials in real time, avoid local overheating or deterioration caused by material accumulation, and improve material utilization.

[0022] 3. Both the horizontal feeding pipe and the inclined lifting pipe adopt a spiral conveying structure. The feeding speed is independently controlled by the first and second rotating motors, and can be dynamically adjusted according to the rhythm of pre-crushing and ultra-fine grinding to avoid material blockage or interruption. The inclined design of the inclined lifting pipe and the close fit of the spiral blades ensure that ultra-fine powder is conveyed without residue, reducing the frequency of pipe cleaning and reducing maintenance costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is the front view of the present invention;

[0025] Figure 2 This is a perspective view of the present invention;

[0026] Figure 3 This is a perspective view of the pre-crushing tank of the present invention;

[0027] Figure 4 This is a cross-sectional view of the pre-crushing tank of the present invention;

[0028] Figure 5This is a first-view perspective perspective view of the internal components of the pre-crushing tank of the present invention;

[0029] Figure 6 This is a cross-sectional view showing the mating relationship between the first drive shaft, the second drive shaft, the third drive shaft, and the fourth drive shaft of the present invention.

[0030] Figure 7 This is a perspective view showing the mating relationship between the first drive shaft, the second drive shaft, the third drive shaft, and the fourth drive shaft of the present invention.

[0031] Figure 8 This is a second-view perspective perspective view of the internal components of the pre-crushing tank of the present invention;

[0032] In the diagram: 1. Crushing chamber; 101. Feed bend; 102. Feed hopper; 2. Collection hopper; 3. Inclined lifting pipe; 301. Second rotary motor; 302. Second discharge port; 4. Pre-crushing tank; 401. Horizontal feeding pipe; 402. First rotary motor; 403. First discharge port; 5. Drive box; 501. Third rotary motor; 502. Fifth bevel gear; 503. Sixth bevel gear; 6. First drive shaft; 601. Second drive shaft; 602. Third drive shaft; 603. Fourth drive shaft; 604. First bevel gear 605. Second bevel gear; 606. Third bevel gear; 607. Fourth bevel gear; 7. First inclined connecting frame; 701. Cleaning scraper; 702. First crushing blade; 703. Second inclined connecting frame; 704. Third inclined connecting frame; 705. First crushing shaft; 706. Second crushing blade; 707. Second crushing shaft; 708. Third crushing shaft; 709. First fixing ring; 710. First gear ring; 711. Second fixing ring; 712. Second gear ring; 713. First spur gear; 714. Second spur gear. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Reference Figure 1-8A high-performance ultrafine pulverizing system for producing diuron wettable powder includes a pre-crushing mechanism and an ultrafine pulverizing mechanism. The ultrafine pulverizing mechanism includes a crushing chamber 1, a collecting hopper 2 at the bottom of the crushing chamber 1, and a powder elevator at the bottom of the collecting hopper 2. The pre-crushing mechanism includes a pre-crushing tank 4, which is fixed to the top of the crushing chamber 1. A horizontal feeding pipe 401 is installed at the bottom of the pre-crushing tank 4, and a first discharge port 403 is provided at one end of the horizontal feeding pipe 401. A feed bend 101 is installed on one side of the crushing chamber 1, and a feed hopper 102 is fixed to the top of the feed bend 101. The first discharge port 403... Aligned with the feed hopper 102, the powder elevator includes an inclined lifting pipe 3, a horizontal feeding pipe 401, and a feeding screw installed inside the inclined lifting pipe 3. A first rotary motor 402 is fixed at the end of the horizontal feeding pipe 401 away from the first discharge port 403. The first rotary motor 402 drives the feeding screw inside the horizontal feeding pipe 401 to rotate. A second rotary motor 301 is fixed at the end of the inclined lifting pipe 3 near the collecting hopper 2. The second rotary motor 301 drives the feeding screw inside the inclined lifting pipe 3 to rotate. A second discharge port 302 is provided below the end of the inclined lifting pipe 3 away from the second rotary motor 301.

[0036] The pre-crushed small particles fall into the horizontal feeding pipe 401. The first rotary motor 402 drives the feeding screw inside the pipe to rotate at a constant speed. The thrust of the screw blades pushes the material along the pipe to the first discharge port 403, and it falls precisely into the feed hopper 102. Finally, it enters the crushing chamber 1 through the feed bend 101. The continuity of the screw conveyor can avoid material accumulation, and the feeding speed can be controlled by adjusting the motor speed to match the crushing rhythm.

[0037] The ultrafine powder pulverized in crushing chamber 1 falls into collecting hopper 2 due to gravity, and then enters inclined lifting pipe 3. A second rotary motor 301 drives the feeding screw inside the pipe to rotate, using the inclined angle and screw thrust to lift the powder upwards, finally discharging it from the second discharge port 302 (which can be directly connected to packaging equipment or a storage silo). The inclined design prevents powder deposition, and the tight fit between the screw blades and the pipe wall reduces powder residue.

[0038] Example 2

[0039] The pre-crushing tank 4 is equipped with a first drive shaft 6, a second drive shaft 601, a third drive shaft 602 and a fourth drive shaft 603, which are rotatably installed inside the tank. The second drive shaft 601 is rotatably sleeved outside the first drive shaft 6, the third drive shaft 602 is rotatably sleeved outside the second drive shaft 601, and the fourth drive shaft 603 is rotatably sleeved outside the third drive shaft 602.

[0040] The top ends of the first drive shaft 6, the second drive shaft 601, the third drive shaft 602 and the fourth drive shaft 603 extend into the drive box 5 at the top of the pre-crushing tank 4. A first bevel gear 604 is fixed to the outside of the first drive shaft 6, a second bevel gear 605 is fixed to the outside of the second drive shaft 601, a third bevel gear 606 is fixed to the outside of the third drive shaft 602, and a fourth bevel gear 607 is fixed to the outside of the fourth drive shaft 603.

[0041] The drive housing 5 has a third rotary motor 501 fixed on its outer wall. The output shaft of the third rotary motor 501 extends into the drive housing 5 and is fixed with a fifth bevel gear 502 and a sixth bevel gear 503. The diameter of the fifth bevel gear 502 is larger than the diameter of the sixth bevel gear 503.

[0042] The first bevel gear 604, the second bevel gear 605, the third bevel gear 606, and the fourth bevel gear 607 are distributed from top to bottom. The first bevel gear 604 and the fourth bevel gear 607 both mesh with the fifth bevel gear 502, and the second bevel gear 605 and the third bevel gear 606 both mesh with the sixth bevel gear 503.

[0043] Among them, the bottom end of the fourth drive shaft 603 is fixed with multiple first inclined connecting frames 7, a cleaning scraper 701 is fixed on the first inclined connecting frame 7, and a first crushing blade 702 is fixed on the side of the cleaning scraper 701 away from the inner wall of the pre-crushing tank 4. The bottom end of the third drive shaft 602 is fixed with a second inclined connecting frame 703, and a first crushing shaft 705 is rotatably mounted on the second inclined connecting frame 703.

[0044] The bottom end of the second drive shaft 601 is fixed with a third inclined connecting frame 704, and a second crushing shaft 707 is rotatably mounted on the third inclined connecting frame 704. The bottom end of the first drive shaft 6 is fixed with a third crushing shaft 708. The exterior of the first crushing shaft 705, the second crushing shaft 707 and the third crushing shaft 708 are all fixed with second crushing blades 706.

[0045] The first inclined connecting frame 7 is fixed with a first fixing ring 709, and a first toothed ring 710 is fixed at the bottom end of the first fixing ring 709. The first spur gear 713 is fixed at the top end of the first crushing shaft 705 and meshes with the first toothed ring 710. The third inclined connecting frame 704 is fixed with a second fixing ring 711, and a second toothed ring 712 is fixed at the bottom end of the second fixing ring 711. The second spur gear 714 is fixed at the top end of the second crushing shaft 707 and meshes with the second toothed ring 712.

[0046] Working principle:

[0047] The third rotary motor 501 inside the drive box 5 provides a power source for pre-crushing. Its output shaft is fixed with the fifth bevel gear 502 and the sixth bevel gear 503. The fifth bevel gear 502 has a larger diameter and meshes with the first bevel gear 604 and the fourth bevel gear 607. Due to the difference in gear diameter, the rotational speed of the first drive shaft 6 and the fourth drive shaft 603 is lower than that of the second drive shaft 601 and the third drive shaft 602.

[0048] Furthermore, the first drive shaft 6 and the second drive shaft 601 rotate in the same direction but at different speeds, while the third drive shaft 602 and the second drive shaft 601 rotate in opposite directions.

[0049] This causes the cleaning scraper 701 and the first crushing shaft 705 located on the outer ring to rotate in the opposite direction to the second crushing shaft 707 and the third crushing shaft 708 located on the inner ring. As a result, the material is pre-crushed by the first crushing blade 702 and the second crushing blade 706. This rotational characteristic of reverse rotation and alternating speed provides complex shearing force for crushing, thereby improving the crushing effect.

[0050] Furthermore, since the first drive shaft 6 and the second drive shaft 601 rotate in the same direction but at different speeds, the small speed difference between the two can drive the first spur gear 713 to move slowly along the first gear ring 710, thereby driving the first crushing shaft 705 to rotate slowly.

[0051] Since the third drive shaft 602 and the second drive shaft 601 rotate in opposite directions, the second spur gear 714 is driven to move quickly along the second gear ring 712, which in turn drives the second crushing shaft 707 to rotate relatively quickly. Thus, through multi-dimensional and variable-frequency complex shearing forces, the blocky diuron wettable powder raw material can be quickly crushed into uniform small particles, laying a good foundation for subsequent ultrafine grinding and significantly improving the overall grinding efficiency and the consistency of the fineness of the finished product.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-performance diuron wettable powder production ultrafine grinding system, comprising a pre-crushing mechanism and an ultrafine grinding mechanism, characterized in that: The ultrafine pulverizing mechanism includes a crushing chamber (1), a collecting hopper (2) is provided at the bottom of the crushing chamber (1), a powder elevator is provided at the bottom of the collecting hopper (2), the pre-crushing mechanism includes a pre-crushing tank (4), the pre-crushing tank (4) is fixed at the top of the crushing chamber (1), and a horizontal feeding pipe (401) is installed at the bottom of the pre-crushing tank (4). A first discharge port (403) is provided at one end of the horizontal feeding pipe (401), a feeding bend (101) is installed on one side of the crushing chamber (1), a feeding hopper (102) is fixed at the top of the feeding bend (101), and the first discharge port (403) is aligned with the feeding hopper (102). The pre-crushing tank (4) is rotatably equipped with a first drive shaft (6), a second drive shaft (601), a third drive shaft (602) and a fourth drive shaft (603). The second drive shaft (601) is rotatably sleeved outside the first drive shaft (6), the third drive shaft (602) is rotatably sleeved outside the second drive shaft (601), and the fourth drive shaft (603) is rotatably sleeved outside the third drive shaft (602). The top ends of the first drive shaft (6), the second drive shaft (601), the third drive shaft (602) and the fourth drive shaft (603) extend into the drive box (5) at the top of the pre-crushing tank (4). A first bevel gear (604) is fixed to the outside of the first drive shaft (6), a second bevel gear (605) is fixed to the outside of the second drive shaft (601), a third bevel gear (606) is fixed to the outside of the third drive shaft (602), and a fourth bevel gear (607) is fixed to the outside of the fourth drive shaft (603). The bottom end of the fourth drive shaft (603) is fixed with multiple first inclined connecting frames (7), a cleaning scraper (701) is fixed on the first inclined connecting frame (7), and a first crushing blade (702) is fixed on the side of the cleaning scraper (701) away from the inner wall of the pre-crushing tank (4). The bottom end of the third drive shaft (602) is fixed with a second inclined connecting frame (703), and a first crushing shaft (705) is rotatably mounted on the second inclined connecting frame (703). The bottom end of the second drive shaft (601) is fixed with a third inclined connecting frame (704), and a second crushing shaft (707) is rotatably mounted on the third inclined connecting frame (704). The bottom end of the first drive shaft (6) is fixed with a third crushing shaft (708). The exterior of the first crushing shaft (705), the second crushing shaft (707) and the third crushing shaft (708) are all fixed with second crushing blades (706).

2. The ultrafine pulverizing system for producing high-performance diuron wettable powder according to claim 1, characterized in that: The powder elevator includes an inclined lifting tube (3), a horizontal feeding tube (401), and a feeding screw installed in both the inclined lifting tube (3). A first rotary motor (402) is fixed at one end of the horizontal feeding tube (401) away from the first discharge port (403). The first rotary motor (402) drives the feeding screw in the horizontal feeding tube (401) to rotate.

3. The ultrafine pulverizing system for producing high-performance diuron wettable powder according to claim 2, characterized in that: The inclined lifting pipe (3) is fixed with a second rotary motor (301) at one end near the hopper (2). The second rotary motor (301) drives the feeding screw inside the inclined lifting pipe (3) to rotate, and a second discharge port (302) is provided below the end of the inclined lifting pipe (3) away from the second rotary motor (301).

4. The ultrafine pulverizing system for producing high-performance diuron wettable powder according to claim 1, characterized in that: A third rotary motor (501) is fixed on the outer wall of the drive box (5). The output shaft of the third rotary motor (501) extends into the drive box (5) and is fixed with a fifth bevel gear (502) and a sixth bevel gear (503). The diameter of the fifth bevel gear (502) is larger than the diameter of the sixth bevel gear (503).

5. The ultrafine pulverizing system for producing high-performance diuron wettable powder according to claim 4, characterized in that: The first bevel gear (604), the second bevel gear (605), the third bevel gear (606) and the fourth bevel gear (607) are distributed from top to bottom, and the first bevel gear (604) and the fourth bevel gear (607) mesh with the fifth bevel gear (502), and the second bevel gear (605) and the third bevel gear (606) mesh with the sixth bevel gear (503).

6. The ultrafine pulverizing system for producing high-performance diuron wettable powder according to claim 1, characterized in that: A first fixed ring (709) is fixed on the first inclined connecting frame (7), a first toothed ring (710) is fixed at the bottom end of the first fixed ring (709), a first spur gear (713) is fixed at the top end of the first crushing shaft (705), and the first spur gear (713) meshes with the first toothed ring (710). A second fixed ring (711) is fixed on the third inclined connecting frame (704), a second toothed ring (712) is fixed at the bottom end of the second fixed ring (711), and a second spur gear (714) is fixed at the top end of the second crushing shaft (707), and the second spur gear (714) meshes with the second toothed ring (712).

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