Organic fertilizer crushing and screening equipment

Abstract

The invention discloses organic fertilizer crushing and screening equipment, and relates to the technical field of organic fertilizer processing, and the organic fertilizer crushing and screening equipment is technically characterized by comprising a crushing box and bases fixedly mounted at four corners of the bottom of the crushing box, a feeding port is formed in the center of the top of the crushing box, a crushing mechanism is arranged in an inner cavity of the crushing box, and a screening mechanism is arranged under the crushing mechanism; the screening mechanism comprises a filtering assembly and an impurity removal assembly, the filtering assembly comprises a rectangular mounting frame fixedly mounted in an inner cavity of the crushing box, and by arranging the distance-adjustable screen structure, the impurity removal assembly and a Teflon coating of a fine stainless steel rod, flexible and accurate adjustment of the distance between screens is achieved, impurities in the screening process are effectively removed, and the screening efficiency is improved. And the anti-sticking performance and the wear resistance of the screen are remarkably improved, so that the distance between the screens is rapidly adjusted according to the particle sizes and screening requirements of different organic fertilizer raw materials, the screening efficiency and flexibility are improved, the continuity and the stability of the screening process are ensured, and the maintenance cost of the screen is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of organic fertilizer processing, and specifically relates to an organic fertilizer crushing and screening device. Background Art

[0002] In the process of organic fertilizer production, the crushing and screening link plays a crucial role. It not only concerns the uniformity of the particle size distribution of the organic fertilizer and the stability of the product quality, but also directly affects the smoothness of the subsequent processing process and the market competitiveness of the final product. This link ensures the applicability of the fertilizer under different crops and different soil conditions by precisely controlling the size of the organic fertilizer particles, thereby improving the utilization rate of the fertilizer and the growth effect of the crops.

[0003] However, most of the traditional organic fertilizer crushing and screening devices rely on sieves for screening in the screening link, and the sizes of the screening holes on the sieves are often fixed. This design leads to the fact that in the actual production process, once the production requirements change and it is necessary to screen organic fertilizer particles of different diameters, the operators have to face the cumbersome task of replacing the sieve. This process not only takes a lot of time and energy, but also may lead to an extension of the equipment downtime due to frequent sieve replacement, thereby increasing the production cost and time cost. In addition, the design of fixed screening holes also limits the adaptability of the equipment to organic fertilizers with different particle size distributions, affecting the flexibility and efficiency of the production line. Therefore, we propose a new type of organic fertilizer crushing and screening device. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an organic fertilizer crushing and screening device, which solves the problems that the sizes of the screening holes of the traditional organic fertilizer crushing and screening device are fixed, resulting in the need to frequently replace the sieve to adapt to different production requirements, consuming time and energy, increasing the equipment downtime and production cost, and at the same time limiting the adaptability of the equipment to the particle size distribution of the organic fertilizer and the flexibility and efficiency of the production line.

[0005] To achieve the above object, the present invention provides the following technical solution: An organic fertilizer crushing and screening device, including a crushing box and bases fixedly installed at the four corners of the bottom of the crushing box. A feeding port is opened at the center of the top of the crushing box. A crushing mechanism is arranged in the inner cavity of the crushing box, and a screening mechanism is arranged directly below the crushing mechanism.

[0006] The screening mechanism includes a filtering component and a impurity removing component.

[0007] The filtering component includes a rectangular mounting frame fixedly installed in the inner cavity of the crushing box, and a screen structure with adjustable spacing installed on the rectangular mounting frame. The screen structure with adjustable spacing includes a distance adjustment motor fixedly installed in the inner cavity of the rectangular mounting frame. The output end of the distance adjustment motor penetrates through the rectangular mounting frame and is rotatably connected to a number of bidirectional screws fixedly connected to each other. One of the bidirectional screws away from the distance adjustment motor is rotatably connected to the rectangular mounting frame. The bidirectional screw is threadedly connected with a ball screw block. One side of the ball screw block away from the rectangular mounting frame is fixedly installed with a thin stainless steel rod. One end of the thin stainless steel rod away from the ball screw block is fixedly installed with a sliding ring. The sliding ring is slidably connected to a sliding rod fixedly installed in the inner cavity of the rectangular mounting frame.

[0008] Preferably, the number of the distance adjustment motors is two, and the included angle between the two distance adjustment motors is ninety degrees; the internal threads of the two ball screw blocks on the same bidirectional screw are opposite, and are adapted to the threads on the bidirectional screw.

[0009] Preferably, the number of the thin stainless steel rods is several, distributed in a cross shape, and a Teflon coating is provided on its surface.

[0010] Preferably, the inner circular surface of the sliding ring and the outer circular surface of the sliding rod are both polished.

[0011] Preferably, the impurity removal component includes exhaust pipes symmetrically installed on the inner wall of the rectangular mounting frame and penetrating through the rectangular mounting frame and the crushing box. A number of Venturi nozzles are fixedly installed on the outer circular surface of the exhaust pipe near the thin stainless steel rod. The Venturi nozzles and the thin stainless steel rod are on the same horizontal plane; a wind guide elbow fixedly connected to the inner cavity of the exhaust pipe is fixedly installed at the air inlet end of the exhaust pipe. An air pump with an output end fixedly connected to the wind guide elbow is bolted to the outside of the crushing box;

[0012] The impurity removal component further includes a shaft seat fixedly installed on the rectangular mounting frame. The shaft seat is composed of a rectangular block with a bearing hole and a bearing. The bearing is fixedly installed in the rectangular block with the bearing hole. A shaft rod is fixedly installed on the inner circular surface of the shaft seat. A wind blade is fixedly installed at one end of the shaft rod close to the Venturi nozzle. The wind blade and the Venturi nozzle are on the same straight line. An impact member is fixedly installed at the end of the shaft rod away from the Venturi nozzle;

[0013] The impact member includes an impact substrate. An active impact plate is rotatably connected to the impact substrate. A telescopic spring is fixedly installed on the active impact plate. One end of the telescopic spring away from the active impact plate is fixedly connected to the impact substrate.

[0014] Preferably, the crushing mechanism includes a driving crushing wheel and a driven crushing wheel which are connected by bearings in the inner cavity of the crushing box and penetrate through the crushing box, and the driving crushing wheel is tangent to the driven crushing wheel; an energy-saving motor located directly above the air pump is fixedly installed on the outer side of the crushing box, the output end of the energy-saving motor is fixedly connected to the driving crushing wheel, a driving wheel is fixedly installed at one end of the driving crushing wheel close to the energy-saving motor, a driven wheel is fixedly installed at one end of the driven crushing wheel, the driving wheel and the driven wheel are connected by belt drive, and the diameters of the driving wheel and the driven wheel are not equal.

[0015] Preferably, a plurality of buffer belts are fixedly installed on one side of the inner wall of the crushing box on the sides of the driving crushing wheel and the driven crushing wheel, and the plurality of buffer belts are made of elastic rubber belts.

[0016] Preferably, a limiting concave frame is fixedly installed on the top of the base, and an organic fertilizer collection box located directly below the crushing box is slidably connected in the inner cavity of the limiting concave frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting a screen structure with adjustable spacing, the present invention realizes flexible adjustment of the screen spacing. The adjustable-distance motor drives the bidirectional screw to rotate, so that the ball screw block moves on the bidirectional screw, and then drives the thin stainless steel rod and the sliding ring thereon to slide along the sliding rod, thereby realizing precise adjustment of the screen spacing. This design can quickly adjust the screen spacing according to the particle size and screening requirements of different organic fertilizer raw materials, improving the screening efficiency and flexibility.

[0019] 2. By setting an impurity removal component, the present invention effectively removes impurities during the screening process. Specifically, the airflow generated by the air pump is guided through the air guide elbow, enters the exhaust duct and forms a strong airflow through acceleration by a plurality of Venturi nozzles, blows towards the wind leaf, and the wind leaf drives the impact member to rotate, continuously impacting the thin stainless steel rod. This design can accurately apply the forces of the airflow and the impact member to the screen, effectively blowing off and vibrating off the impurities and attachments adhering to the thin stainless steel rod, preventing the screen from being blocked, and ensuring the continuity and stability of the screening process.

[0020] 3. By setting a Teflon coating on the thin stainless steel rod, the present invention significantly improves the anti-adhesion and wear resistance of the screen. The Teflon coating has excellent non-stick and wear-resistant properties, can effectively reduce the adhesion of organic fertilizer raw materials on the screen, reduce the wear degree of the screen, and extend the service life of the screen. At the same time, the easy-cleaning property of the Teflon coating also reduces the maintenance cost of the screen and improves the overall economic benefit of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 Schematic diagram of the top of the inner cavity of the crushing box of the present invention;

[0023] Figure 3 Schematic diagram of the bottom of the inner cavity of the crushing box of the present invention;

[0024] Figure 4 For the present invention Figure 3 Partial cross-sectional structure schematic diagram;

[0025] Figure 5 Schematic diagram of the screening mechanism structure of the present invention;

[0026] Figure 6 Schematic diagram of the rectangular mounting bracket and the fine stainless steel rod of the present invention;

[0027] Figure 7 For the present invention Figure 6 Planar structure schematic diagram;

[0028] Figure 8 For the present invention Figure 7 Amplified structure schematic diagram of the distance adjustment motor, the bidirectional screw and the ball screw block of the present invention;

[0029] Figure 9 For the present invention Figure 7 Amplified structure schematic diagram of the slip ring, the slide bar, the exhaust pipe and the Venturi nozzle of the present invention;

[0030] Figure 10 For the present invention Figure 8 Amplified structure schematic diagram at position A of the present invention.

[0031] In the figure:

[0032] 1. Crushing box;

[0033] 2. Base;

[0034] 3. Crushing mechanism; 31. Active crushing wheel; 32. Driven crushing wheel; 33. Energy-saving motor; 34. Driving wheel; 35. Driven wheel;

[0035] 4. Screening mechanism;

[0036] 41. Filter assembly; 411. Rectangular mounting bracket; 412. Distance adjustment motor; 413. Bidirectional screw; 414. Ball screw block; 415. Fine stainless steel rod; 416. Slip ring; 417. Slide bar;

[0037] 42. Impurity removal assembly; 421. Exhaust pipe; 422. Venturi nozzle; 423. Wind guiding elbow; 424. Air pump; 425. Axle seat; 426. Axle rod; 427. Wind blade; 428. Impact part; 4281. Impact substrate; 4282. Movable impact plate; 4283. Telescopic spring;

[0038] 5. Buffer zone;

[0039] 6. Limit concave shelf;

[0040] 7. Organic fertilizer collection box. Specific implementation manner

[0041] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually relative to the left and right shown in the drawings; "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms are not used to limit the present invention.

[0042] Embodiment 1:

[0043] Please refer to Figures 1 - 10 the structural schematic diagram, and the present invention provides the following technical solutions:

[0044] An organic fertilizer crushing and screening device, including a crushing box 1 and bases 2 fixedly installed at the four corners of the bottom of the crushing box 1. The bases 2 can support the entire device. A feeding port is provided at the center of the top of the crushing box 1, which can facilitate the addition of organic fertilizer crushing raw materials. A crushing mechanism 3 is arranged in the inner cavity of the crushing box 1, and a screening mechanism 4 is arranged directly below the crushing mechanism 3. The screening mechanism 4 includes a filtering component 41 and an impurity removal component 42; the filtering component 41 includes a rectangular mounting frame 411 fixedly installed in the inner cavity of the crushing box 1, and a screen structure with adjustable spacing installed on the rectangular mounting frame 411; the screen structure with adjustable spacing includes a distance adjustment motor 412 fixedly installed in the inner cavity of the rectangular mounting frame 411. The output end of the distance adjustment motor 412 penetrates through the rectangular mounting frame 411 and is rotatably connected to a number of bidirectional screws 413 fixedly connected to each other. The distance adjustment motor 412 drives a number of bidirectional screws 413 fixedly connected to the output end to rotate. One of the bidirectional screws 413 far from the distance adjustment motor 412 is rotatably connected to the rectangular mounting frame 411, which facilitates the more stable rotation of a number of bidirectional screws 413 under the action of the distance adjustment motor 412. Ball screw blocks 414 are threadedly connected to the bidirectional screws 413. On the side of the ball screw block 414 far from the rectangular mounting frame 411, a thin stainless steel rod 415 is fixedly installed. At the end of the thin stainless steel rod 415 far from the ball screw block 414, a slip ring 416 is fixedly installed. The two ends of the thin stainless steel rod 415 are fixed by using the ball screw block 414 and the slip ring 416, so that the thin stainless steel rod 415 can be in a straightened state, which is convenient for a number of thin stainless steel rods 415 to cross each other to form a screen. A slide rod 417 fixedly installed in the inner cavity of the rectangular mounting frame 411 is slidably connected to the slip ring 416. The slip ring 416 can move synchronously on the slide rod 417 as the ball screw block 414 moves on the bidirectional screw 413.

[0045] The number of the distance adjustment motors 412 is two, and the included angle between the two distance adjustment motors 412 is ninety degrees. One distance adjustment motor 412 controls a number of thin stainless steel rods 415 distributed horizontally, and the other distance adjustment motor 412 controls a number of thin stainless steel rods 415 distributed vertically. The internal threads of the two ball screw blocks 414 on the same bidirectional screw 413 are opposite, and are adapted to the threads on the bidirectional screw 413.

[0046] The number of the thin stainless steel rods 415 is several, and they are distributed in a cross shape, and a Teflon coating is provided on their surfaces. The Teflon coating can reduce the viscosity of the thin stainless steel rods 415. Specifically, the Teflon coating has excellent non-stickiness and self-lubricity, and can significantly reduce the viscosity between the thin stainless steel rods 415 and the organic fertilizer. In addition, the Teflon coating also has good corrosion resistance and high temperature resistance, and is suitable for the screening of various organic fertilizers.

[0047] The inner circular surface of the slip ring 416 and the outer circular surface of the slide bar 417 are both polished. After polishing, the contact surfaces of the slip ring 416 and the slide bar 417 are smooth, with a small friction coefficient, and can slide more smoothly on the slide bar 417 under the drive of the ball screw block 414 and the thin stainless steel rod 415.

[0048] Specifically, when in use, the working principle of the present invention is as follows:

[0049] When it is necessary to screen organic fertilizer particles of different diameters, by rotating the two distance-adjusting motors 412 forward, their output ends will drive the corresponding plurality of bidirectional screws 413 to rotate. As the bidirectional screws 413 rotate, the ball screw blocks 414 will approach each other along the bidirectional screws 413, and then pull the corresponding thin stainless steel rods 415 to approach each other as well. In this way, the sieve holes formed by the intersection of the thin stainless steel rods 415 will decrease (note that if the distance-adjusting motors 412 continue to rotate forward beyond a certain range, some sieve holes will gradually increase and some will gradually decrease, failing to achieve the effect of reducing the sieve holes, so the distance that the ball screw blocks 414 move on the bidirectional screws 413 should be reasonably controlled). Conversely, if the two distance-adjusting motors 412 rotate in the reverse direction, the ball screw blocks 414 will move away from each other, driving the thin stainless steel rods 415 to move away from each other as well, thereby increasing the sieve holes (here, "increasing the sieve holes" does not refer to all the sieve holes formed by the intersection of the thin stainless steel rods 415, but only to some of the sieve holes formed by the intersection of the thin stainless steel rods 415. At the same time, during the process of increasing the sieve holes, the sieve holes on both sides will gradually become smaller. Refer to Figure 8 and Figure 9 , for filtering large-volume crops, the sieve holes on both sides become smaller, which does not affect filtration).

[0050] This design enables, during the actual production process, when the production requirements change and it is necessary to screen organic fertilizer particles of different diameters, the operator does not need to perform the cumbersome work of replacing the sieve. They only need to simply adjust the rotation direction of the distance-adjusting motors 412 to easily change the size of the sieve holes, thereby meeting different screening requirements. This design not only improves the adaptability and flexibility of the equipment but also greatly reduces the labor intensity and time cost of the operator.

[0051] Embodiment 2:

[0052] Based on the specific Embodiment 1, the difference in this embodiment is:

[0053] As Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown in the figure, the impurity removal component 42 includes exhaust pipes 421 symmetrically installed on the inner wall of the rectangular mounting frame 411 and passing through the rectangular mounting frame 411 and the crushing box 1. The exhaust pipes 421 can facilitate the introduction of the air pump 424 to the Venturi nozzles 422 for spraying. On the outer circumferential surface of the exhaust pipe 421, several Venturi nozzles 422 are fixedly installed on the side close to the fine stainless steel rod 415. The Venturi nozzles 422 and the fine stainless steel rod 415 are on the same horizontal plane, so that the wind blown out from the Venturi nozzles 422 can directly blow onto the fine stainless steel rod 415, facilitating the blowing off of the attachments on the fine stainless steel rod 415. The air inlet end of the exhaust pipe 421 is fixedly installed with a wind guide elbow 423 communicated with the inner cavity of the exhaust pipe 421. The wind guide elbow 423 can facilitate the introduction of the wind blown out by the air pump 424 into the exhaust pipe 421. The air pump 424 with the output end fixedly connected to the wind guide elbow 423 is bolted to the outside of the crushing box 1. The impurity removal component 42 further includes a shaft seat 425 fixedly installed on the rectangular mounting frame 411. The shaft seat 425 is composed of a rectangular block with a bearing hole and a bearing. The bearing is fixedly installed in the rectangular block with the bearing hole. A shaft rod 426 is fixedly installed on the inner circumferential surface of the shaft seat 425. A wind blade 427 is fixedly installed at one end of the shaft rod 426 close to the Venturi nozzles 422. The wind blade 427 and the Venturi nozzles 422 are on the same straight line. An impact member 428 is fixedly installed at the end of the shaft rod 426 away from the Venturi nozzles 422. The impact member 428 includes an impact base plate 4281. An active impact plate 4282 is rotatably connected to the impact base plate 4281. A telescopic spring 4283 is fixedly installed on the active impact plate 4282. One end of the telescopic spring 4283 away from the active impact plate 4282 is fixedly connected to the impact base plate 4281.

[0054] The airflow generated by the air pump 424 enters the exhaust duct 421 smoothly under the guidance of the air guide elbow 423. Subsequently, this airflow passes through a number of Venturi nozzles 422 evenly distributed on the exhaust duct 421 (based on Bernoulli's equation in fluid mechanics, by narrowing the cross-section through which the fluid passes, the flow velocity increases while the pressure decreases. Therefore, when the gas passes through the Venturi nozzle, its flow velocity will be significantly accelerated. This acceleration effect makes the Venturi nozzle have unique advantages in various application scenarios, such as improving fluid transportation efficiency, enhancing jet force, etc.). The Venturi nozzles 422 will accelerate the airflow to form a powerful air current, which directly blows onto the wind blade 427, prompting the wind blade 427 to rotate, driving the shaft rod 426 to rotate, and the shaft rod 426 drives the impact member 428 to rotate, continuously hitting the fine stainless steel rod 415 (when the movable impact plate 4282 on the impact member 428 hits the stainless steel rod 415, under the action of the telescopic spring 4283, the movable impact plate 4282 will rotate, facilitating the impact member 428 to continue rotating smoothly when it collides with the stainless steel rod 415, avoiding the situation where the rotation is affected due to the too long impact member 428). At the same time, the airflow also directly blows onto the fine stainless steel rod 415. Under the combined action of the impact of the impact member 428 and the airflow, it acts on the fine stainless steel rod 415, effectively blowing off or hitting off the impurities and attachments adhering to the stainless steel rod 415, thereby maintaining the cleanliness and efficient operation of the sieve mesh.

[0055] Embodiment Three:

[0056] Based on the specific Embodiment One, the difference in this embodiment lies in:

[0057] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, the crushing mechanism 3 includes a driving crushing wheel 31 and a driven crushing wheel 32 which are connected by bearings in the inner cavity of the crushing box 1 and penetrate through the crushing box 1. The crushing box 1 is connected to the driving crushing wheel 31 and the driven crushing wheel 32 by bearings, which can reduce the friction force and achieve the effect of reducing the energy consumption of the energy-saving motor 33. The driving crushing wheel 31 is tangent to the driven crushing wheel 32, which is convenient for crushing the raw materials of organic fertilizer; an energy-saving motor 33 is fixedly installed outside the crushing box 1 and is directly above the air pump 424. Compared with ordinary motors, the energy-saving motor 33 has the advantages of significantly improving energy efficiency, reducing energy loss, thus effectively reducing the operating costs of enterprises; at the same time, the energy-saving motor 33 also has a longer service life and lower maintenance costs, and is more in line with environmental protection requirements, which is conducive to reducing carbon emissions and conforming to the current green and low-carbon development trend. The output end of the energy-saving motor 33 is fixedly connected to the driving crushing wheel 31. A driving wheel 34 is fixedly installed at one end of the driving crushing wheel 31 close to the energy-saving motor 33, and a driven wheel 35 is fixedly installed at one end of the driven crushing wheel 32. The driving wheel 34 and the driven wheel 35 are connected by belt drive. The diameters of the driving wheel 34 and the driven wheel 35 are not equal. Using the belt can facilitate the driving wheel 34 to drive the driven wheel 35 to rotate at the same frequency {it can be understood here that the diameters of the driving wheel 34 and the driven wheel 35 are not equal. For two objects with different diameters, if they rotate at the same frequency, that is, the rotation frequency (or period) is the same, then there is a speed difference in their rotational speeds. This is because the rotational speed is related to both the diameter of the object and the rotation frequency. The specific relationship can be expressed by the following formula: rotational speed = (rotation frequency) × (2π × radius). Since the diameters of the two objects are different, even if their rotation frequencies are the same, the radii will be different, so the rotational speeds will also be different. Specifically, the object with a larger diameter will have a lower rotational speed at the same frequency (because the radius is larger, but the number of rotations is the same, so the angular change per unit time is smaller), while the object with a smaller diameter will have a higher rotational speed), therefore, the crushing effect can be achieved}.

[0058] The energy-saving motor 33 provides efficient power, and this motor drives the driving crushing wheel 31 to start rotating. The rotation of the driving crushing wheel 31 simultaneously drives the driving wheel 34 fixedly connected to it to rotate synchronously. Subsequently, the driving wheel 34 transmits the power to the driven wheel 35 fixedly installed on the driven crushing wheel 32 through the belt drive mechanism, and then drives the driven crushing wheel 32 to start rotating. In this way, the driving crushing wheel 31 and the driven crushing wheel 32 rotate in a coordinated manner to effectively crush and squeeze the organic fertilizer raw materials put into the inside of the crushing box 1. During this process, the bearing connection design between the crushing box 1 and the driving crushing wheel 31 and the driven crushing wheel 32 significantly reduces the friction force, thereby improving the energy utilization efficiency.

[0059] Example 4:

[0060] On the basis of the first specific embodiment, the difference in this embodiment lies in:

[0061] As Figure 2 and Figure 4 shown, on one side of the inner wall of the crushing box 1 located on the sides of the active crushing wheel 31 and the driven crushing wheel 32, a number of buffer belts 5 are fixedly installed. The number of buffer belts 5 is made of elastic rubber belts. The buffer belts 5 made of elastic rubber belts have the characteristics of high elasticity and strong wear resistance.

[0062] By setting a number of buffer belts 5, the probability of secondary crushing of organic fertilizer particles is effectively reduced. Specifically, the crushed organic fertilizer particles will generate corresponding reaction forces during the falling process. This force might originally cause the particles to have a hard collision with the inner wall of the crushing box 1, thereby causing secondary crushing. However, with the design of the buffer belts 5, these rigid collisions of the particles with the crushing box 1 are converted into elastic collisions with the buffer belts 5, thus greatly reducing the risk of secondary crushing. The buffer belts 5 are made of materials with high elasticity and strong wear resistance, ensuring their long-term and effective protective effect.

[0063] Embodiment Five:

[0064] On the basis of the first specific embodiment, the difference in this embodiment lies in:

[0065] As Figure 1 and Figure 2 shown, a limit concave frame 6 is fixedly installed on the top of the base 2. The limit concave frame 6 can effectively limit the position of the organic fertilizer collection box 7, enabling the operator to quickly and easily position the organic fertilizer collection box 7 during daily use without excessive manual intervention. The inner cavity of the limit concave frame 6 is slidably connected with the organic fertilizer collection box 7 located directly below the crushing box 1. This design enables the organic fertilizer collection box 7 to conveniently receive and collect the crushed organic fertilizer particles, greatly improving the practicality and operation efficiency of the equipment.

[0066] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. An organic fertilizer crushing and screening device, comprising a crushing box (1) and bases (2) fixedly installed at the four corners of the bottom of the crushing box (1), and characterized in that: A feeding port is provided at the center of the top of the crushing box (1). A crushing mechanism (3) is arranged in the inner cavity of the crushing box (1), and a screening mechanism (4) is arranged directly below the crushing mechanism (3). The screening mechanism (4) includes a filtering component (41) and an impurity removing component (42). The filtering component (41) includes a rectangular mounting frame (411) fixedly installed in the inner cavity of the crushing box (1), and a screen structure with adjustable spacing installed on the rectangular mounting frame (411). The screen structure with adjustable spacing includes a distance adjusting motor (412) fixedly installed in the inner cavity of the rectangular mounting frame (411). The output end of the distance adjusting motor (412) penetrates through the rectangular mounting frame (411) and is rotatably connected to a plurality of mutually fixedly connected bidirectional screws (413). One of the bidirectional screws (413) far from the distance adjusting motor (412) is rotatably connected to the rectangular mounting frame (411). Ball screw blocks (414) are threadedly connected to the bidirectional screws (413). A thin stainless steel rod (415) is fixedly installed on the side of the ball screw block (414) far from the rectangular mounting frame (411). A sliding ring (416) is fixedly installed at the end of the thin stainless steel rod (415) far from the ball screw block (414). A sliding rod (417) fixedly installed in the inner cavity of the rectangular mounting frame (411) is slidably connected to the sliding ring (416).

2. The organic fertilizer crushing and screening equipment according to claim 1, characterized in that: The number of the distance adjusting motors (412) is two, and the included angle between the two distance adjusting motors (412) is 90 degrees. The internal threads of the two ball screw blocks (414) on the same bidirectional screw (413) are opposite and are adapted to the threads on the bidirectional screw (413).

3. An organic fertilizer crushing and screening device according to claim 1, characterized in that: The number of the thin stainless steel rods (415) is several, which are distributed in a cross shape, and a Teflon coating is provided on the surface thereof.

4. An organic fertilizer crushing and screening device according to claim 1, characterized in that: The inner circular surface of the sliding ring (416) and the outer circular surface of the sliding rod (417) are both polished.

5. An organic fertilizer crushing and screening device according to claim 1, characterized in that: The impurity removing component (42) includes exhaust pipes (421) symmetrically installed on the inner walls of the rectangular mounting frame (411) and penetrating through the rectangular mounting frame (411) and the crushing box (1). A plurality of Venturi nozzles (422) are fixedly installed on the outer circular surface of the exhaust pipe (421) close to the thin stainless steel rod (415). The Venturi nozzles (422) and the thin stainless steel rod (415) are on the same horizontal plane. A wind guiding elbow (423) communicated with the inner cavity of the exhaust pipe (421) is fixedly installed at the air inlet end of the exhaust pipe (421). An air pump (424) with an output end fixedly connected to the wind guiding elbow (423) is bolted to the outside of the crushing box (1). The impurity removal component (42) further includes a shaft seat (425) fixedly installed on the rectangular mounting frame (411). The shaft seat (425) is composed of a rectangular block with a bearing hole and a bearing. The bearing is fixedly installed inside the rectangular block with the bearing hole. A shaft rod (426) is fixedly installed on the inner circular surface of the shaft seat (425). One end of the shaft rod (426) close to the Venturi nozzle (422) is fixedly installed with a wind blade (427). The wind blade (427) and the Venturi nozzle (422) are on the same straight line. One end of the shaft rod (426) away from the Venturi nozzle (422) is fixedly installed with an impact member (428). The impact member (428) includes an impact base plate (4281). An active impact plate (4282) is rotatably connected to the impact base plate (4281). A telescopic spring (42783) is fixedly installed on the active impact plate (4282). The end of the telescopic spring (4283) away from the active impact plate (4282) is fixedly connected to the impact base plate (4281).

6. The organic fertilizer crushing and screening equipment according to claim 1, characterized in that: The crushing mechanism (3) includes a driving crushing wheel (31) and a driven crushing wheel (32) which are connected by bearings in the inner cavity of the crushing box (1) and penetrate through the crushing box (1). The driving crushing wheel (31) is tangent to the driven crushing wheel (32). An energy-saving motor (33) is fixedly installed outside the crushing box (1) directly above the air pump (424). The output end of the energy-saving motor (33) is fixedly connected to the driving crushing wheel (31). A driving wheel (34) is fixedly installed at one end of the driving crushing wheel (31) close to the energy-saving motor (33). A driven wheel (35) is fixedly installed at one end of the driven crushing wheel (32). The driving wheel (34) and the driven wheel (35) are connected by belt drive. The diameters of the driving wheel (34) and the driven wheel (35) are not equal.

7. An organic fertilizer crushing and screening device according to claim 6, characterized in that: A number of buffer belts (5) are fixedly installed on one side of the inner wall of the crushing box (1) on the sides of the driving crushing wheel (31) and the driven crushing wheel (32). The number of buffer belts (5) is made of elastic rubber belts.

8. A kind of organic fertilizer crushing and screening equipment according to claim 1, characterized in that: A limit concave frame (6) is fixedly installed on the top of the base (2). An organic fertilizer collection box (7) located directly below the crushing box (1) is slidably connected to the inner cavity of the limit concave frame (6).

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