A multi-stage fertilizer pulverizer

Abstract

This utility model discloses a multi-stage fertilizer crusher, relating to the field of fertilizer production. It addresses the problem in existing crushing devices that use sieves to crush raw materials and then screen them, but the accumulated material on the sieves affects the screening efficiency. The crusher housing has crushing rollers rotatably connected to both the front and rear ends of the upper middle section, and crushing rollers rotatably connected to both the front and rear ends of the lower middle section. A folded guide screen is fixedly connected to the lower end of the crusher housing, and a vibration device is fixedly connected to one side of the lower end face of the folded guide screen. A lifting cylinder is fixedly installed at the middle of the rear end face of the crusher housing. By using the folded guide screen and vibration device, the crushed fertilizer can be automatically screened. Unqualified particles move along the inclined surface to the lifting cylinder under vibration, avoiding the reduced screening efficiency caused by material accumulation on traditional sieves and reducing the hassle of manual cleaning.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production, specifically a multi-stage fertilizer crusher. Background Technology

[0002] Fertilizers are substances that provide essential nutrients for plant growth, primarily used to supplement insufficient soil nutrients and promote increased crop yield and quality. They can be classified by source into organic fertilizers (such as manure and compost) and chemical fertilizers (such as nitrogen, phosphorus, and potassium fertilizers); and by function into base fertilizers, top dressings, and foliar fertilizers. The core components of fertilizers include nitrogen (promoting leaf and branch growth), phosphorus (aiding root development and flowering and fruiting), potassium (enhancing stress resistance), and micronutrients such as calcium and magnesium. Fertilizer production requires the use of a pulverizer to crush the raw materials.

[0003] For example, patent announcement number CN221108360U discloses a multi-stage fertilizer crusher, including a base, a bottom box fixedly connected to the top of the base, a top box connected to the top of the bottom box, a feed inlet connected to the top of the top box, sealed material handling doors movably connected to the upper and lower sides of the front of the bottom box, a primary crushing component fixedly connected to the left and right sides of the top box, a secondary crushing component with one end extending into the bottom box fixedly connected to the left and right sides of the front of the bottom box, an auxiliary dispersing component with one end penetrating the top box fixedly connected to the top of the bottom box, and a drive belt drivingly connected to the outer side of the auxiliary dispersing component. This multi-stage fertilizer crusher, by performing two forms of crushing treatment on fertilizer, can enhance the service life of the crusher while improving the crushing efficiency, and can also perform automatic screening after crushing to effectively screen out fertilizers that do not meet the specifications.

[0004] In the above-mentioned technology, the crushing device crushes the raw materials and then screens them through a screen plate. However, the accumulation of the screened raw materials on the screen plate will affect the screening efficiency of the screen plate, and manual cleaning of the raw materials on the screen plate is required, which is quite troublesome. Therefore, the market urgently needs to develop a multi-stage fertilizer crusher to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-stage fertilizer crusher to solve the problem mentioned in the background art that in the prior art, the crushing device crushes the raw material through a screen plate and then screens it, but the screened raw material accumulates on the screen plate, which affects the screening efficiency of the screen plate and requires manual cleaning of the raw material on the screen plate, which is quite troublesome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage fertilizer crusher, comprising a crusher housing, wherein crushing rollers are rotatably connected to both ends of the upper middle part of the crusher housing, and crushing rollers are rotatably connected to both ends of the lower middle part of the crusher housing, a folded guide screen is fixedly connected to the lower end of the crusher housing, a vibration device is fixedly connected to one side of the lower end face of the folded guide screen, a lifting cylinder is fixedly installed in the middle of the rear end face of the crusher housing, a third rotating shaft is rotatably connected to the middle of the interior of the lifting cylinder, and a spiral lifting blade is fixedly connected to the third rotating shaft.

[0007] Preferably, the upper end face of the crusher housing is provided with a feeding port, the middle of the lower end face of the crusher housing is provided with a discharge port, the front and rear end faces of the crusher housing are fixedly connected with a first inclined guide plate at the upper end of each of the two crushing rollers, and the front and rear end faces of the crusher housing are fixedly connected with a second inclined guide plate at the upper end of each of the two crushing rollers.

[0008] Preferably, a first rotating shaft is fixedly connected to the middle of the crushing roller, and a first limiting tube is fixedly connected to the front and rear ends of the upper middle part of both sides of the crusher box. The first rotating shafts in the middle of the two crushing rollers are respectively inserted into the first limiting tubes on both sides.

[0009] Preferably, a second rotating shaft is fixedly connected to the middle of the crushing roller, and a second limiting tube is fixedly connected to the front and rear ends of the lower middle part of both sides of the crusher housing. The second rotating shafts in the middle of the two crushing rollers are respectively inserted into the second limiting tubes on both sides.

[0010] Preferably, a drive box is fixedly connected to one end face of the crusher housing. A first motor is fixedly connected to both the front and rear ends of the upper part of the drive box. One end of each of the two first rotating shafts passes through the first limiting tube and extends into the drive box, and is respectively connected to the output shafts of the two first motors via couplings. A second motor is fixedly connected to both the front and rear ends of the lower part of the drive box. One end of each of the two second rotating shafts passes through the second limiting tube and extends into the drive box, and is respectively connected to the output shafts of the two second motors via couplings.

[0011] Preferably, a rectangular discharge port is provided on the rear end face of the crusher housing and at the upper end of the middle of the rear end of the angled guide screen; a rectangular return port is provided on the rear end face of the crusher housing and at the upper end of the middle of the rear end of the second inclined guide plate; the lower end of the front end face of the lifting cylinder is connected to the rectangular discharge port; and the upper end of the front end face of the lifting cylinder is connected to the rectangular return port.

[0012] Preferably, a third motor is fixedly connected to the upper end of the lifting cylinder, and the upper end of the third rotating shaft extends out of the upper end face of the lifting cylinder and is connected to the output shaft of the third motor through a coupling.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by setting up a folded guide screen and a vibration device, the crushed fertilizer can be automatically screened. The substandard particles move along the inclined plane to the lifting cylinder under the action of vibration, avoiding the problem of reduced screening efficiency due to material accumulation in traditional screens and reducing the trouble of manual cleaning.

[0015] (2) In this utility model, a multi-stage crushing structure (crushing roller + crushing roller) is adopted, which first performs coarse crushing and then fine crushing, thereby improving the crushing efficiency and reducing the workload of a single crushing mechanism, thus extending the service life of the equipment.

[0016] (3) In this utility model, the substandard particles are automatically sent back to the crushing area for secondary crushing by the spiral lifting mechanism, forming a closed-loop process, which not only ensures the crushing quality, but also improves production efficiency and reduces raw material waste. Attached Figure Description

[0017] Figure 1 This is a front view of a multi-stage fertilizer crusher according to the present invention;

[0018] Figure 2 This is a main sectional view of the crushing roller and pulverizing roller of this utility model;

[0019] Figure 3 This is a side sectional view of the lifting cylinder of this utility model;

[0020] Figure 4 This is a detailed enlarged view of part A of this utility model.

[0021] In the diagram: 1. Crusher housing; 101. Feed inlet; 102. First inclined guide plate; 103. Second inclined guide plate; 104. First limiting tube; 105. Second limiting tube; 106. Rectangular discharge outlet; 107. Rectangular return outlet; 108. Discharge outlet; 2. Crushing roller; 201. First rotating shaft; 3. Crushing roller; 301. Second rotating shaft; 4. Angled guide screen; 401. Vibrating device; 5. Drive box; 501. First motor; 502. Second motor; 6. Lifting cylinder; 601. Third rotating shaft; 602. Spiral lifting blades; 603. Third motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a multi-stage fertilizer crusher, comprising a crusher housing 1, a feeding port 101 on the upper surface of the crusher housing 1 for feeding fertilizer raw materials into the crusher housing 1, a discharge port 108 in the middle of the lower surface of the crusher housing 1, and crushing rollers 2 rotatably connected to both ends of the upper middle part of the crusher housing 1. First inclined guide plates 102 are fixedly connected to both ends of the crusher housing 1 and to the upper ends of the two crushing rollers 2, respectively, to guide the fed fertilizer raw materials to the upper part between the two crushing rollers 2. The fertilizer raw material is initially crushed by two crushing rollers 2. Crushing rollers 3 are rotatably connected to both ends of the lower middle section of the crusher housing 1. Second inclined guide plates 103 are fixedly connected to the upper ends of the two crushing rollers 3 on both ends of the crusher housing 1. The initially crushed fertilizer raw material falls and is guided by the two second inclined guide plates 103 to the upper part between the two crushing rollers 3, where it is further crushed by the two crushing rollers 3. A folded guide screen 4 is fixedly connected to the lower end of the crusher housing 1. A vibration device 401 is fixedly connected to one side of the lower end face of the folded guide screen 4. The fertilizer raw material after being crushed by the crushing rollers 3... The raw materials fall onto the angled guide screen 4, and the angled guide screen 4 is vibrated by the vibration device 401, so that the crushed raw materials are screened by the angled guide screen 4 and discharged from the discharge port 108. A lifting cylinder 6 is fixedly installed in the middle of the rear end face of the crusher box 1. A third rotating shaft 601 is rotatably connected to the middle of the inside of the lifting cylinder 6. A spiral lifting blade 602 is fixedly connected to the third rotating shaft 601. A rectangular discharge port 106 is provided on the rear end face of the crusher box 1 at the upper end of the middle of the rear end of the angled guide screen 4. A rectangular discharge port 106 is provided on the rear end face of the crusher box 1 at the upper end of the middle of the rear end of the second inclined guide plate 103. The lower end of the front face of the lifting cylinder 6 is connected to the rectangular discharge port 106, and the upper end of the front face of the lifting cylinder 6 is connected to the rectangular return port 107. The raw material screened on the angled guide screen 4 is guided to the rectangular discharge port 106 by the vibration. The screened raw material enters the interior of the lifting cylinder 6 through the rectangular discharge port 106. The spiral lifting blades 602 inside the lifting cylinder 6 rotate and drive the incoming raw material to be lifted upward and flow back to the second inclined guide plate 103 through the rectangular return port 107. Then, it flows back to the upper end between the two crushing rollers 3 for crushing again through the second inclined guide plate 103.

[0024] Please see Figure 2 and Figure 3A first rotating shaft 201 is fixedly connected to the middle of the crushing roller 2. First limiting tubes 104 are fixedly connected to the front and rear ends of the upper middle part of both sides of the crusher housing 1. The first rotating shafts 201 in the middle of the two crushing rollers 2 are respectively inserted into the first limiting tubes 104 on both sides. A second rotating shaft 301 is fixedly connected to the middle of the crushing roller 3. Second limiting tubes 105 are fixedly connected to the front and rear ends of the lower middle part of both sides of the crusher housing 1. The second rotating shafts 301 in the middle of the two crushing rollers 3 are respectively inserted into the second limiting tubes 105 on both sides. A drive box 5 is fixedly connected to one side of the crusher housing 1. A first motor 501 is fixedly connected to the front and rear ends of the upper part of the drive box 5. One end of each of the two first rotating shafts 201 passes through the first limiting tubes 104. The two first motors 201 extend into the drive box 5 and are connected to the output shafts of the two first motors 501 via couplings. The two motors 502 are fixedly connected to the front and rear ends of the lower end of the drive box 5. One end of each of the two second rotating shafts 301 passes through the second limiting tube 105 and extends into the drive box 5, and is connected to the output shafts of the two second motors 502 via couplings. The two first motors 501 synchronously drive the two first rotating shafts 201 to rotate in a mirror image, thereby causing the two first rotating shafts 201 to drive the two crushing rollers 2 to rotate in a mirror image to crush the fertilizer raw materials. The two second motors 502 synchronously drive the two second rotating shafts 301 to rotate in a mirror image, thereby causing the two second motors 502 to drive the two crushing rollers 3 to rotate in a mirror image to crush the fertilizer raw materials.

[0025] Please see Figure 3 A third motor 603 is fixedly connected to the upper end of the lifting cylinder 6. The upper end of the third rotating shaft 601 extends out of the upper end face of the lifting cylinder 6 and is connected to the output shaft of the third motor 603 through a coupling. The third motor 603 drives the third rotating shaft 601 to rotate, which in turn drives the spiral lifting blade 602 to rotate.

[0026] Working Principle: During operation, fertilizer raw materials are fed into the crusher housing 1 through the feed inlet 101. The raw materials are guided by the first inclined guide plate 102 to the space between two opposing rotating crushing rollers 2 for initial crushing. The crushed material falls to the second inclined guide plate 103 and is guided to the space between two opposing rotating crushing rollers 3 below for fine crushing. The crushed material falls onto the vibrating angled guide screen 4 for sieving. Qualified particles are discharged from the discharge port 108 through the angled guide screen 4, while coarse particles that do not meet the standards move along the inclined surface of the angled guide screen 4 under vibration to the rectangular discharge port 106. After entering the lifting cylinder 6, they are conveyed upward by the spiral lifting blades 602 and finally return to the second inclined guide plate 103 through the rectangular return port 107 to re-enter the crushing rollers 3 for secondary crushing. This cycle continues until all materials reach the qualified particle size. Throughout the process, the crushing roller 2, the pulverizing roller 3, and the spiral lifting blade 602 are driven synchronously by the first motor 501, the second motor 502, and the third motor 603, respectively, to achieve automated continuous crushing operation.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage fertilizer crusher, comprising a crusher housing (1), characterized in that: Crushing rollers (2) are rotatably connected to both the front and rear ends of the upper middle part of the crusher housing (1). Crushing rollers (3) are rotatably connected to both the front and rear ends of the lower middle part of the crusher housing (1). An angled guide screen (4) is fixedly connected to the lower end of the crusher housing (1). A vibration device (401) is fixedly connected to one side of the lower end face of the angled guide screen (4). A lifting cylinder (6) is fixedly installed in the middle of the rear end face of the crusher housing (1). A third rotating shaft (601) is rotatably connected to the middle of the inside of the lifting cylinder (6). A spiral lifting blade (602) is fixedly connected to the third rotating shaft (601).

2. The multi-stage fertilizer crusher according to claim 1, characterized in that: The upper end face of the crusher housing (1) is provided with a feeding port (101), and the middle part of the lower end face of the crusher housing (1) is provided with a discharge port (108). The front and rear end faces of the crusher housing (1) are respectively fixedly connected with a first inclined guide plate (102) at the upper end of the two crushing rollers (2). The front and rear end faces of the crusher housing (1) are respectively fixedly connected with a second inclined guide plate (103) at the upper end of the two crushing rollers (3).

3. The multi-stage fertilizer crusher according to claim 1, characterized in that: The crushing roller (2) is fixedly connected to the middle of the first rotating shaft (201), and the front and rear ends of the upper middle part of the two sides of the crusher box (1) are fixedly connected to the first limiting tube (104). The first rotating shaft (201) in the middle of the two crushing rollers (2) is inserted into the first limiting tube (104) on both sides respectively.

4. A multi-stage fertilizer crusher according to claim 3, characterized in that: The crushing roller (3) is fixedly connected to a second rotating shaft (301) in the middle. The front and rear ends of the lower middle part of the two sides of the crusher box (1) are fixedly connected to second limiting tubes (105). The second rotating shafts (301) in the middle of the two crushing rollers (3) are respectively inserted into the second limiting tubes (105) on both sides.

5. A multi-stage fertilizer crusher according to claim 4, characterized in that: A drive box (5) is fixedly connected to one end face of the crusher housing (1). The front and rear ends of the upper part of the drive box (5) are fixedly connected to a first motor (501). One end of each of the two first rotating shafts (201) passes through the first limiting tube (104) and extends into the drive box (5), and is connected to the output shafts of the two first motors (501) respectively through a coupling. The front and rear ends of the lower part of the drive box (5) are fixedly connected to a second motor (502). One end of each of the two second rotating shafts (301) passes through the second limiting tube (105) and extends into the drive box (5), and is connected to the output shafts of the two second motors (502) respectively through a coupling.

6. A multi-stage fertilizer crusher according to claim 1, characterized in that: A rectangular discharge port (106) is provided on the rear end face of the crusher housing (1) and at the upper end of the middle of the rear end of the angled guide screen (4). A rectangular return port (107) is provided on the rear end face of the crusher housing (1) and at the upper end of the middle of the rear end of the second inclined guide plate (103). The lower end of the front end face of the lifting cylinder (6) is connected to the rectangular discharge port (106), and the upper end of the front end face of the lifting cylinder (6) is connected to the rectangular return port (107).

7. A multi-stage fertilizer crusher according to claim 1, characterized in that: The upper end of the lifting cylinder (6) is fixedly connected to a third motor (603), and the upper end of the third rotating shaft (601) extends out of the upper end face of the lifting cylinder (6) and is connected to the output shaft of the third motor (603) through a coupling.

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