A raw material grinding and screening device for powder pesticide production

Abstract

The utility model belongs to pesticide raw material grinding technical field, concretely is a kind of raw material grinding and screening device for powder pesticide production, including foot stool, box is installed on the foot stool, fixed plate is fixedly installed on the inner wall of box, the fixed plate bottom side is installed with pulse electromagnet, the inner wall of box is opened with sliding slot, sliding block is assembled in the sliding slot, sieve plate is installed on the sliding block, iron sheet is installed on the sieve plate top side, multiple groups of spring are installed between the iron sheet and fixed plate, multiple groups of crushing knife are installed on the rotating rod, raw material is crushed by crushing knife, in this process, sieve plate drives raw material on it high-frequency vibration, and powder of qualified granularity falls from sieve hole of sieve plate, while raw material of unqualified granularity is continuously crushed by crushing knife, this structure can screen raw material powder, can repeatedly crush unqualified raw material of granularity, beneficial to improve the effect of raw material crushing.

Description

Technical Field

[0001] This utility model relates to the field of pesticide raw material grinding technology, specifically a raw material grinding and sieving device for the production of powder pesticides. Background Technology

[0002] Powders are a type of dry formulation obtained by mixing and pulverizing the active ingredient, a large amount of filler, and appropriate stabilizers. During the production of powder pesticides, a raw material grinding and sieving device is required to grind the raw materials.

[0003] A Chinese patent with authorization announcement number CN 111760631 B discloses a grinding device for the production of powdered pesticides. The device includes a housing with an inner shell inside, and a grinding roller within the inner shell. A motor is fixed to the upper end of the housing, and the motor's output shaft is fixed to a rotating shaft. The lower end of the rotating shaft extends into the housing and is connected to the bottom of the housing via a bearing. The rotating shaft vertically passes through the grinding roller and is fixed to it. An annular perforation is provided at the upper end of the housing, with two or more fixing rods fixed within the perforation. An annular slide rail is provided at the upper end of the housing, outside the annular perforation, and two or more sliders are mounted on the annular slide rail. A feed cylinder is fixed to each slider, passing through the slider and communicating with the annular perforation. Each slider is fixed to the rotating shaft via a connecting rod. An arc-shaped baffle is fixed between adjacent sliders, with the annular baffle located at the upper end of the annular perforation. This grinding device for the production of powdered pesticides can prevent material from clogging between the grinding roller and the inner shell due to excessively rapid feeding.

[0004] Existing grinding devices cannot sieve the raw material powder during the pulverization of pesticide raw materials, nor can they repeatedly pulverize insufficiently pulverized raw material particles, resulting in poor raw material pulverization effect; therefore, a raw material grinding and sieving device for the production of powdered pesticides is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a raw material grinding and screening device for the production of powder pesticides.

[0006] The technical solution adopted by this utility model to solve its technical problem is a grinding and sieving device for raw materials in the production of powdered pesticides, including a frame, a box mounted on the frame, a control panel mounted on the outer wall of the box, a fixing plate fixedly mounted on the inner wall of the box, a pulse electromagnet mounted on the bottom side of the fixing plate, the pulse electromagnet being connected to the control panel through an internal circuit, a sliding groove formed on the inner wall of the box, a slider fitted in the sliding groove, a sieve plate mounted on the slider, an iron plate mounted on the top side of the sieve plate, multiple sets of springs installed between the iron plate and the fixing plate, a protective plate mounted on the sieve plate, the other end of the protective plate being in contact with the inner wall of the box, two sets of guide rods symmetrically mounted on the sieve plate, two sets of rotating rods rotatably mounted on the top plate of the box, and multiple sets of crushing blades mounted on the rotating rods. A rod hole is provided on the bottom side of the rod, and the guide rod is assembled in the rod hole. Two sets of first gears are fixedly sleeved on the rotating shafts of the two sets of rotating rods, and the two sets of first gears mesh with each other. A first motor is mounted on the top plate of the box through a base. The output shaft of the first motor is fixedly connected to the rotating shaft of one of the rotating rods. A feed hopper is installed on the top plate of the box, and a discharge hopper is installed at the bottom of the box. The upper part of the box is a crushing chamber, and the lower part of the box is a grinding chamber. The pesticide raw materials are crushed by crushing blades. During this process, the sieve plate drives the pesticide raw materials on it to vibrate at high frequency. Powder with qualified particle size falls from the sieve holes of the sieve plate, while pesticide raw materials with unqualified particle size continue to be crushed by the crushing blades. This structure can screen the raw material powder and can repeatedly crush raw materials with unqualified particle size, which is beneficial to improving the crushing effect of raw materials.

[0007] Preferably, two sets of guide plates are symmetrically installed on the inner wall of the grinding chamber, and two sets of grinding rollers are rotatably installed on the inner wall of the grinding chamber. A second gear is fixedly sleeved on the rotating shaft of the grinding roller, and the two sets of second gears mesh with each other. A second motor is installed on the outer wall of the grinding chamber via a base. The output shaft of the second motor is fixedly connected to the rotating shaft of one of the grinding rollers. Pesticide powder with qualified particle size falls from the sieve holes of the sieve plate, and then falls along the two sets of guide plates into the space between the two sets of grinding rollers. The two sets of grinding rollers rotate synchronously relative to each other, and the two sets of grinding rollers thoroughly grind the falling powder, realizing full and efficient grinding of pesticide raw materials, which is beneficial to improving grinding efficiency.

[0008] The advantages of this utility model are:

[0009] 1. This utility model uses a pulverizing blade to pulverize pesticide raw materials. During this process, the sieve plate drives the pesticide raw materials on it to vibrate at high frequency. Powder with qualified particle size falls through the sieve holes of the sieve plate, while pesticide raw materials with unqualified particle size continue to be pulverized by the pulverizing blade. This structure can screen the raw material powder and can repeatedly pulverize raw materials with unqualified particle size, which is beneficial to improving the raw material pulverization effect.

[0010] 2. This utility model allows pesticide powder with qualified particle size to fall through the sieve holes of the sieve plate, and then fall along two sets of guide plates between two sets of grinding rollers. The two sets of grinding rollers rotate synchronously relative to each other, and the two sets of grinding rollers thoroughly grind the falling powder, thus achieving full and efficient grinding of pesticide raw materials, which is beneficial to improving grinding efficiency. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure at the fixed plate.

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective plate.

[0015] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the box;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the grinding roller.

[0017] In the diagram: 1. Leg; 2. Housing; 3. Control panel; 4. Fixing plate; 5. Pulse electromagnet; 6. Slide rail; 7. Slider; 8. Screen plate; 9. Iron sheet; 10. Spring; 11. Protective plate; 12. Guide rod; 13. Rotating rod; 14. Crushing blade; 15. First gear; 16. First motor; 17. Feed hopper; 18. Discharge hopper; 19. Crushing chamber; 20. Grinding chamber; 21. Guide plate; 22. Grinding roller; 23. Second gear; 24. Second motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-3As shown, a grinding and sieving device for raw materials used in the production of powdered pesticides includes a stand 1, a housing 2 mounted on the stand 1, a control panel 3 mounted on the outer wall of the housing 2, a fixing plate 4 fixedly mounted on the inner wall of the housing 2, a pulse electromagnet 5 mounted on the bottom side of the fixing plate 4, the pulse electromagnet 5 being connected to the control panel 3 via an internal circuit, a groove 6 formed on the inner wall of the housing 2, a slider 7 fitted within the groove 6, a sieve plate 8 mounted on the slider 7, and an iron plate 9 mounted on the top side of the sieve plate 8. The iron plate 9 and the fixing plate 4 are positioned between... Multiple sets of springs 10 are installed. A protective plate 11 is installed on the sieve plate 8, with the other end of the protective plate 11 attached to the inner wall of the box 2. Two sets of guide rods 12 are symmetrically installed on the sieve plate 8. Two sets of rotating rods 13 are rotatably installed on the top plate of the box 2. Multiple sets of crushing blades 14 are installed on the rotating rods 13. Rod holes are opened on the bottom side of the rotating rods 13, and the guide rods 12 are assembled in the rod holes. Two sets of first gears 15 are fixedly sleeved on the rotating shafts of the two sets of rotating rods 13. The two sets of first gears 15 mesh with each other. The top plate of the box 2 passes through... The base is equipped with a first motor 16, the output shaft of the first motor 16 is fixedly connected to the rotating shaft of one of the rotating rods 13, the top plate of the housing 2 is equipped with a feed hopper 17, the bottom of the housing 2 is equipped with a discharge hopper 18, the upper part of the housing 2 is a crushing chamber 19, and the lower part of the housing 2 is a grinding chamber 20. During operation, the existing grinding device cannot screen the raw material powder during the grinding and crushing process of pesticide raw materials, and cannot repeatedly crush insufficiently crushed particles, resulting in poor raw material crushing effect. By pouring the pesticide raw materials from the feed hopper 17 into the crushing chamber 19 of the housing 2, the first motor 16 is operated to drive one of the rotating rods 13 to rotate. The rotating rod 13 drives the first gear 15 on it to rotate. The first gear 15 pushes another first gear 15 to rotate. The other first gear 15 drives another rotating rod 13 to rotate. That is, the two sets of rotating rods 13 rotate synchronously relative to each other. The two sets of rotating rods 13 drive the multiple sets of crushing blades 14 on them to rotate at high speed. The crushing blades 14 crush the pesticide raw materials.During this process, a sinusoidal current is fed into the pulse electromagnet 5 through a wire via the control panel 3, magnetizing the pulse electromagnet 5. The sinusoidal current switches between positive and negative half-cycles. At the instant of switching between the positive and negative half-cycles of the sinusoidal current, the sinusoidal current disappears. The frequency of the switching between the positive and negative half-cycles of the sinusoidal current is very high, so the magnetic field frequency generated by the pulse electromagnet 5 is also very high. The magnetic force generated by the pulse electromagnet 5 is also instantaneous. At the instant the magnetic force is generated by the pulse electromagnet 5, the iron plate 9 is attracted to move towards the pulse electromagnet 5. The iron plate 9 drives the sieve plate 8 to move vertically upward. Afterward, the magnetic force disappears, and under the tension of the spring 10, the spring 10 pulls the sieve plate 8 to move vertically downward. Because the switching frequency of the magnetic field occurrence and disappearance is extremely high, the sieve plate 8 generates high-frequency vibration. The sieve plate 8 drives the pesticide raw materials on it to vibrate at high frequency. Powder with qualified particle size falls from the sieve holes of the sieve plate 8, while pesticide raw materials with unqualified particle size continue to be crushed by the crushing blade 14. This structure can screen the raw material powder and can repeatedly crush raw materials with unqualified particle size, which is beneficial to improving the crushing effect of raw materials. ;

[0020] Please see Figure 4-5 As shown, two sets of guide plates 21 are symmetrically installed on the inner wall of the grinding chamber 20, and two sets of grinding rollers 22 are rotatably installed on the inner wall of the grinding chamber 20. A second gear 23 is fixedly sleeved on the rotating shaft of the grinding roller 22, and the two sets of second gears 23 mesh with each other. A second motor 24 is installed on the outer wall of the grinding chamber 20 via a base, and the output shaft of the second motor 24 is fixedly connected to the rotating shaft of one of the grinding rollers 22. During operation, existing grinding devices struggle to fully and efficiently grind pesticide raw materials, resulting in low grinding efficiency. This is addressed by adjusting the particle size distribution. The pesticide powder falls through the sieve holes of the sieve plate 8 and then falls between the two sets of grinding rollers 22 along the two sets of guide plates 21. The second motor 24 drives one of the grinding rollers 22 to rotate, which in turn drives the second gear 23 on it to rotate. The second gear 23 drives the other second gear 23 to rotate, and the other second gear 23 drives the other grinding roller 22 to rotate. That is, the two sets of grinding rollers 22 rotate synchronously relative to each other, and the two sets of grinding rollers 22 thoroughly grind the falling powder, which realizes the full and efficient grinding of pesticide raw materials and helps to improve grinding efficiency.

[0021] Working principle: Existing grinding devices, during the grinding and pulverizing of pesticide raw materials, cannot sieve the raw material powder or repeatedly pulverize insufficiently pulverized particles, resulting in poor pulverization effect. By pouring the pesticide raw material from the feed hopper 17 into the pulverizing chamber 19 of the housing 2, the first motor 16 operates, driving one of the rotating rods 13 to rotate. The rotating rod 13 drives the first gear 15 on it to rotate, which in turn drives another first gear 15 to rotate. This second first gear 15 drives the other rotating rod 13 to rotate, meaning the two sets of rotating rods 13 rotate synchronously relative to each other. Multiple sets of pulverizing blades 14 rotate at high speed, pulverizing pesticide raw materials. During this process, a sinusoidal current is fed into the pulse electromagnet 5 via a wire through the control panel 3, magnetizing the pulse electromagnet 5. The sinusoidal current switches between positive and negative half-cycles. At the instant of switching between the positive and negative half-cycles, the sinusoidal current disappears. The frequency of the positive and negative half-cycle switching is very high, therefore the magnetic field frequency generated by the pulse electromagnet 5 is also very high. The magnetic force generated by the pulse electromagnet 5 is also instantaneous. The instantaneous magnetic force generated by the pulse electromagnet 5 attracts the iron plate 9 to move towards the pulse electromagnet 5, and the iron plate 9 drives the sieve plate 8 to move vertically upward. After the magnetic force disappears, under the tension of spring 10, spring 10 pulls the sieve plate 8 vertically downward. Due to the extremely high switching frequency of the magnetic field's occurrence and disappearance, the sieve plate 8 generates high-frequency vibration. The sieve plate 8 drives the pesticide raw materials on it to vibrate at a high frequency. Powder with qualified particle size falls through the sieve holes of the sieve plate 8, while pesticide raw materials with unqualified particle size continue to be crushed by the pulverizing blade 14. This structure can screen the raw material powder and repeatedly crush raw materials with unqualified particle size, which is beneficial to improving the raw material crushing effect. Existing grinding devices have difficulty in fully and efficiently grinding pesticide raw materials during the grinding process. This results in low grinding efficiency. Pesticide powder with the correct particle size falls through the sieve holes of the sieve plate 8 and then falls along the two sets of guide plates 21 between the two sets of grinding rollers 22. The second motor 24 operates, driving one of the grinding rollers 22 to rotate. The grinding roller 22 drives the second gear 23 on it to rotate, which in turn drives the other second gear 23 to rotate. The other second gear 23 drives the other grinding roller 22 to rotate. In other words, the two sets of grinding rollers 22 rotate synchronously relative to each other, and the two sets of grinding rollers 22 thoroughly grind the falling powder, achieving full and efficient grinding of pesticide raw materials, which is beneficial to improving grinding efficiency.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A grinding and sieving device for raw materials used in the production of powdered pesticides, characterized in that: The system includes a tripod (1), on which a housing (2) is mounted. A control panel (3) is mounted on the outer wall of the housing (2). A fixing plate (4) is fixedly mounted on the inner wall of the housing (2). A pulse electromagnet (5) is mounted on the bottom side of the fixing plate (4). The pulse electromagnet (5) is connected to the control panel (3) through an internal circuit. A sliding groove (6) is provided on the inner wall of the housing (2). A slider (7) is assembled in the sliding groove (6). A sieve plate (8) is mounted on the slider (7). A sieve plate (8) is mounted on the top side of the sieve plate (8). There is an iron sheet (9), and multiple sets of springs (10) are installed between the iron sheet (9) and the fixing plate (4). A protective plate (11) is installed on the screen plate (8). The other end of the protective plate (11) is attached to the inner wall of the box body (2). Two sets of guide rods (12) are symmetrically installed on the screen plate (8). Two sets of rotating rods (13) are rotatably installed on the top plate of the box body (2). Multiple sets of crushing blades (14) are installed on the rotating rods (13). A rod hole is opened on the bottom side of the rotating rod (13). The guide rod (12) is assembled in the rod hole.

2. The raw material grinding and sieving device for powder pesticide production according to claim 1, characterized in that: Two sets of first gears (15) are fixedly sleeved on the shafts of the two sets of rotating rods (13), and the two sets of first gears (15) mesh with each other.

3. The raw material grinding and sieving device for the production of powdered pesticides according to claim 1, characterized in that: The top plate of the housing (2) is equipped with a first motor (16) via a base, and the output shaft of the first motor (16) is fixedly connected to the shaft of one of the rotating rods (13).

4. The raw material grinding and sieving device for powder pesticide production according to claim 1, characterized in that: A feed hopper (17) is installed on the top plate of the box (2), and a discharge hopper (18) is installed at the bottom of the box (2).

5. The raw material grinding and sieving device for the production of powdered pesticides according to claim 1, characterized in that: The upper part of the box (2) is the crushing chamber (19), and the lower part of the box (2) is the grinding chamber (20).

6. The raw material grinding and sieving device for the production of powdered pesticides according to claim 5, characterized in that: Two sets of guide plates (21) are symmetrically installed on the inner wall of the grinding chamber (20). Two sets of grinding rollers (22) are rotatably installed on the inner wall of the grinding chamber (20). A second gear (23) is fixedly sleeved on the rotating shaft of the grinding roller (22). The two sets of second gears (23) mesh with each other. A second motor (24) is installed on the outer wall of the grinding chamber (20) through a base. The output shaft of the second motor (24) is fixedly connected to the rotating shaft of one of the grinding rollers (22).

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