Humic acid urea base compound fertilizer production raw material pulverizer

Abstract

This invention discloses a raw material crushing device for the production of humic acid-urea-based compound fertilizer, belonging to the technical field of compound fertilizer production equipment. The device includes a screening box, with a crushing box on top. A feeding assembly is mounted on top of the crushing box, and the crushing assembly is located between the screening box and the crushing box. A vibrating motor is located on the left side of the screening box, and a controller is located on the front. The screening box contains an inclined, replaceable screen and a guide plate, which, in conjunction with the vibrating motor, achieves graded screening of coarse and fine materials, which are then discharged through two sets of discharge hoppers. Simultaneously, the controller has a built-in speed adjustment module, which can independently adjust the operating speed of each motor to adapt to different raw materials and production conditions. This invention effectively solves the problems of easy clogging during feeding, poor crushing uniformity, lack of grading screening, and inability to adjust operating conditions in traditional crushing devices. It features anti-clogging continuous feeding, high crushing precision, and good screening effect, effectively improving the qualified rate and production efficiency of humic acid-urea-based compound fertilizer raw material crushing, and meeting the needs of large-scale production.

Description

Technical Field

[0001] This invention relates to the field of compound fertilizer production equipment technology, specifically a raw material crushing device for the production of humic acid-urea-based compound fertilizer. Background Technology

[0002] In the production process of humic acid-urea-based compound fertilizer, various raw materials such as urea, humic acid, and fillers need to be pulverized and refined. The uniformity of the particle size of the pulverized raw materials directly determines the accuracy of the compound fertilizer mixing ratio, the granulation effect, and the fertilizer efficacy of the finished product. Currently, traditional compound fertilizer raw material pulverizing equipment has many shortcomings in practical use: First, problems such as agglomeration, bridging, and blockage are prone to occur during the raw material feeding process. Agglomerated raw materials directly entering the crushing mechanism will lead to insufficient crushing and produce a large number of substandard particles. Second, relying on a single crushing structure for crushing operations results in low crushing precision and poor material uniformity. Third, the crushed material lacks a fine screening structure, making it impossible to effectively separate coarse and fine materials. Coarse particles cannot be processed again, resulting in a low qualified rate of finished raw materials, which seriously affects the quality of subsequent compound fertilizer production. Fourth, the fixed speed of each operating mechanism of the equipment cannot be adapted and adjusted according to different raw material characteristics and production conditions. The equipment has poor versatility and production flexibility, making it difficult to meet the needs of large-scale production of high-quality humic acid urea-based compound fertilizer.

[0003] To address these issues, the present invention provides a raw material crushing device for the production of humic acid-urea-based compound fertilizer. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a raw material crushing device for the production of humic acid-urea-based compound fertilizer, thus solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw material crushing device for the production of humic acid-urea-based compound fertilizer, comprising a screening box, a crushing box fixedly installed on the top of the screening box, a feeding component provided on the top of the crushing box, and a crushing component provided between the interior of the screening box and the crushing box; a vibrating motor fixedly installed on the left side of the screening box, and a controller fixedly installed on the front of the screening box, the controller being electrically connected to the vibrating motor.

[0006] The feeding assembly includes a conical hopper, a connecting hopper fixedly installed at the bottom of the conical hopper, the connecting hopper fixedly installed at the top of the crushing box, the connecting hopper communicating with the interior of the crushing box, and a spiral stirring blade rotatably connected between the front and rear inner walls of the connecting hopper.

[0007] Furthermore, a first motor is fixedly installed on the front of the connecting bucket, and the output end of the first motor movably passes through the interior of the connecting bucket and is fixedly connected to the spiral stirring blades.

[0008] Furthermore, a horizontal plate is fixedly installed on the top of the conical hopper, and a stirring rod is rotatably connected to the bottom of the horizontal plate. The stirring rod is located inside the conical hopper and above the spiral stirring blades. A second motor is fixedly installed on the top of the horizontal plate, and the output end of the second motor moves through the inside of the horizontal plate and is fixedly connected to the stirring rod.

[0009] Furthermore, the controller is electrically connected to the first motor and the second motor.

[0010] Furthermore, the pulverizing assembly includes two pulverizing rollers, both of which are rotatably connected to the front and rear inner walls of the pulverizing chamber, and the connection between the connecting hopper and the pulverizing chamber is located between the two pulverizing rollers.

[0011] Furthermore, a screen and a guide plate are fixedly installed inside the screening box. The screen is located above the guide plate, with the left side of the screen higher than the right side, and the right side of the guide plate higher than the left side; two crushing rollers are located above the left side of the screen.

[0012] Furthermore, a first discharge hopper is fixedly installed on the right side of the screening box, and a second discharge hopper is fixedly installed on the left side of the screening box; a first discharge trough is opened on the right side of the screening box, and a second discharge trough is opened on the left side of the screening box; the first discharge trough is located between the first discharge hopper and the lowest point on the right side of the screen, and the screen and the first discharge hopper are interconnected through the first discharge trough; the second discharge trough is located between the second discharge hopper and the lowest point on the left side of the guide plate, and the guide plate is connected to the second discharge hopper through the second discharge trough.

[0013] Furthermore, a housing is fixedly installed on the front of the screening box. Inside the housing, two first gears and two second gears are rotatably connected via a rotating shaft. The two first gears are fixedly connected to corresponding crushing rollers via rotating shafts that movably penetrate the inside of the screening box sidewall. The two first gears mesh with their corresponding second gears, and the two second gears mesh with each other. A third motor is fixedly installed on the front of the housing. The output end of the third motor movably penetrates the sidewall of the housing and is fixedly connected to a rotating shaft that is connected to the left first gear. The third motor is electrically connected to the controller.

[0014] Furthermore, the screen is a replaceable screen, and the side wall of the screening box is provided with a disassembly and maintenance port for replacing screens with different mesh sizes.

[0015] Furthermore, the controller has a built-in speed adjustment module, which is electrically connected to the first motor, the second motor, the third motor and the vibration motor, respectively, and is used to adjust the operating speed of each motor.

[0016] Beneficial effects This invention provides a raw material crushing device for the production of humic acid-urea-based compound fertilizer. Compared with the prior art, it has the following advantages: 1. This invention features a double-layer stirring and anti-clogging feeding assembly. The stirring rod inside the conical hopper breaks up and crushes the raw material at the top layer, eliminating lumps and bridging. Then, the spiral stirring blades inside the connecting hopper achieve quantitative feeding and secondary anti-clogging, completely solving the problem of raw material feeding blockage, ensuring continuous and stable feeding of the equipment, and improving production continuity.

[0017] 2. This invention features a dual-roller meshing crushing structure, which, in conjunction with gear transmission, achieves synchronous counter-rotation crushing. This crushes the falling compound fertilizer raw materials through compression and shearing, significantly improving the uniformity and fineness of the crushed materials and meeting the particle size requirements of humic acid-urine-based compound fertilizer raw materials.

[0018] 3. This invention integrates a vibrating screen structure, using an inclined, replaceable screen to classify and screen the pulverized raw materials. Qualified fine materials fall through the screen onto a guide plate and are discharged from the second discharge hopper, while coarse particles slide down the screen and are discharged from the first discharge hopper, achieving precise separation of coarse and fine materials. This facilitates the recycling and secondary crushing of coarse materials, effectively improving the qualified rate of finished raw materials. Furthermore, screens with different mesh sizes can be replaced according to production needs, adapting to different particle size production standards, making the equipment highly versatile.

[0019] 4. The present invention can adjust the working speed of the first motor, the second motor, the third motor and the vibration motor respectively through the speed adjustment module built into the controller. It can flexibly adjust the feeding speed, crushing speed and screening vibration frequency according to the hardness and humidity of the raw materials and the production capacity requirements, adapt to different production conditions, and greatly improve the adaptability and production flexibility of the equipment. Attached Figure Description

[0020] 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 from these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the external structure of the present invention; Figure 2 This is a three-dimensional view of the internal overall structure of the present invention; Figure 3 This is a perspective view of the top structure of the present invention; Figure 4 This is a perspective view of the internal structure of the outer shell of the present invention; Figure 5 This is a three-dimensional view of the left side structure of the present invention.

[0022] In the diagram: 1. Screening box; 2. Feeding assembly; 21. Conical hopper; 22. Connecting hopper; 23. First motor; 24. Spiral stirring blades; 25. Horizontal plate; 26. Stirring rod; 27. Second motor; 3. Crushing assembly; 31. Outer shell; 32. Third motor; 33. First gear; 34. Second gear; 35. Crushing roller; 36. Screen; 37. Guide plate; 38. First discharge hopper; 39. Second discharge hopper; 310. First discharge trough; 311. Second discharge trough; 4. Crushing box; 5. Controller; 6. Vibrating motor. Detailed Implementation

[0023] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0024] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Reference Figures 1 to 5 This application provides a raw material crushing device for the production of humic acid-urea-based compound fertilizer, including a screening box 1, a crushing box 4 fixedly installed on the top of the screening box 1, a feeding assembly 2 assembled on the top of the crushing box 4, and a crushing assembly 3 assembled between the screening box 1 and the crushing box 4, realizing integrated operation of raw material feeding, crushing, and screening. A vibration motor 6 is fixed on the left side of the screening box 1, and a controller 5 is fixed on the front. The controller 5 is electrically connected to the vibration motor 6 and is used to control the screening vibration operation.

[0026] The feeding assembly 2 includes a conical hopper 21 and a connecting hopper 22. The connecting hopper 22 is fixed to the top of the crushing box 4 and communicates with the interior of the crushing box 4. A spiral stirring blade 24 is rotatably installed between the front and rear inner walls of the connecting hopper 22. A first motor 23 is fixed to the front of the connecting hopper 22. The output end of the first motor 23 passes through the connecting hopper 22 and is fixedly connected to the spiral stirring blade 24. The first motor 23 drives the spiral stirring blade 24 to rotate, thereby realizing the quantitative feeding of raw materials and preventing material blockage inside the connecting hopper 22.

[0027] A horizontal plate 25 is fixed to the top of the conical hopper 21, and a stirring rod 26 is rotatably mounted on the bottom of the horizontal plate 25. The stirring rod 26 is located inside the conical hopper 21 and directly above the spiral stirring blades 24. A second motor 27 is fixed to the top of the horizontal plate 25, and the output end of the second motor 27 passes through the horizontal plate 25 and is fixedly connected to the stirring rod 26. During operation, the second motor 27 drives the stirring rod 26 to rotate at high speed, breaking up and stirring the raw materials such as humic acid and urea put into the conical hopper 21, eliminating the problems of raw material clumping and bridging, and ensuring that the raw materials fall smoothly. The controller 5 is electrically connected to the first motor 23 and the second motor 27 respectively, and can precisely control the start, stop and running speed of the two motors.

[0028] The crushing assembly 3 includes two symmetrically arranged crushing rollers 35. Both rollers 35 are rotatably connected to the front and rear inner walls of the crushing chamber 4. The connecting port of the connecting hopper 22 and the crushing chamber 4 is directly opposite the gap between the two rollers 35, allowing the falling material to directly fall into the crushing area between the rollers 35. A casing 31 is fixed to the front of the screening box 1. Inside the casing 31, two first gears 33 and two second gears 34 are rotatably mounted via rotating shafts. The first gears 33 are fixedly connected to the rotating shafts of the corresponding crushing rollers 35, and the first gears 33 mesh with the corresponding second gears 34. The two second gears 34 also mesh with each other, forming a synchronous transmission structure. A third motor 32 is fixed to the front of the casing 31. The output end of the third motor 32 is fixedly connected to the rotating shaft of the left first gear 33, and the third motor 32 is electrically connected to the controller 5. During operation, the third motor 32 drives the left first gear 33 to rotate. Through gear meshing, the two crushing rollers 35 rotate synchronously in opposite directions, squeezing and shearing the falling material to ensure uniform crushing.

[0029] The screening box 1 is internally fitted with a screen 36 and a guide plate 37. The screen 36 is positioned above the guide plate 37 and has a left-high, right-low tilted structure. The guide plate 37 has a right-high, left-low tilted structure. Two crushing rollers 35 are correspondingly positioned above the left side of the screen 36, and the crushed raw material falls directly onto the surface of the screen 36. A first discharge hopper 38 is fixed to the right side of the screening box 1, and a second discharge hopper 39 is fixed to the left side. A first discharge trough 310 is opened on the right side of the screening box 1, and a second discharge trough 311 is opened on the left side. The first discharge trough 310 connects the lowest point on the right side of the screen 36 to the first discharge hopper 38, and the second discharge trough 311 connects the lowest point on the left side of the guide plate 37 to the second discharge hopper 39.

[0030] After the raw materials are crushed, they fall onto the surface of the vibrating screen 36. Under the action of vibration, fine materials that meet the particle size requirements pass through the screen 36 and fall onto the surface of the guide plate 37 below. They slide to the left along the inclined guide plate 37 and are discharged from the second discharge hopper 39 through the second discharge chute 311, completing the collection of qualified raw materials. Coarse particles that do not meet the crushing standards cannot pass through the screen 36 and slide to the right along the inclined screen 36. They are discharged from the first discharge hopper 38 through the first discharge chute 310. The workers can put the discharged coarse particles back into the equipment for secondary crushing, which greatly improves the qualified rate of raw material crushing.

[0031] Among them, the screen 36 adopts a replaceable structure, and the side wall of the screening box 1 has a disassembly and maintenance port. The staff can quickly disassemble and replace the screen 36 with different mesh sizes through the maintenance port to adapt to the particle size standards of different compound fertilizer production, making the equipment more adaptable.

[0032] The controller 5 integrates a speed adjustment module, which is electrically connected to the first motor 23, the second motor 27, the third motor 32, and the vibrating motor 6. During actual production, operators can independently adjust the operating speed of each motor using the controller 5 according to the raw material's moisture content, hardness, and production capacity requirements: adjusting the speed of the second motor 27 controls the internal crushing intensity of the conical hopper 21; adjusting the speed of the first motor 23 controls the raw material feeding and conveying speed; adjusting the speed of the third motor 32 controls the crushing force and speed of the crushing roller 35; and adjusting the speed of the vibrating motor 6 controls the screening vibration frequency of the screen 36. This allows for precise adjustment of the equipment's operating conditions, adapting to various production scenarios.

[0033] Furthermore, all contents not described in detail in this specification are existing technologies known to those skilled in the art, and all electrical components mentioned in this document are powered by external power supply lines.

[0034] Working Principle: After the equipment is started, the operator presets the operating speeds of the first motor 23, the second motor 27, the third motor 32, and the vibration motor 6 using the speed adjustment module built into the controller 5, completing the equipment condition debugging. After the equipment parameters are calibrated, compound fertilizer raw materials such as humic acid and urea are put into the conical hopper 21. The second motor 27 drives the stirring rod 26 below the horizontal plate 25 to rotate continuously, forcibly breaking up and stirring the accumulated raw materials, effectively breaking up the raw material agglomeration and bridging, and preventing material stagnation and blockage inside the conical hopper 21. The broken raw materials fall evenly into the connecting hopper 22 below. The first motor 23 drives the spiral stirring blades 24 inside the connecting hopper 22 to rotate at a uniform speed, quantitatively and continuously conveying the raw materials, so that the raw materials fall smoothly into the gap between the two crushing rollers 35 inside the crushing box 4, achieving anti-blocking and uniform feeding.

[0035] After the raw materials enter the crushing chamber 4, the third motor 32 drives the left first gear 33 to rotate through the rotating shaft. Relying on the meshing transmission of the two sets of first gears 33 and second gears 34, the two crushing rollers 35 rotate synchronously in opposite directions, continuously squeezing and shearing the falling raw materials to achieve fine crushing treatment and ensure uniform particle size. The crushed material falls directly onto the surface of the screen 36 inside the screening chamber 1. The vibrating motor 6 continuously drives the screen 36 to vibrate at high frequency, realizing dynamic screening of the material. The screen 36 adopts an inclined structure with the left side higher than the right side. Qualified fine materials that meet the particle size standard can directly penetrate the screen 36 and fall onto the surface of the guide plate 37 with the right side higher than the left side. The fine materials slide down the inclined surface of the guide plate 37 and are discharged from the second discharge hopper 39 through the second discharge chute 311, completing the collection of qualified raw materials.

[0036] Coarse particles exceeding the particle size limit cannot penetrate the screen 36 and will slide to the right along the inclined surface of the screen 36, exiting through the first discharge chute 310 and the first discharge hopper 38. The discharged coarse particles can be recycled and fed back into the equipment for secondary crushing, effectively improving the raw material crushing qualification rate. The screen 36 of this equipment has a replaceable structure, and screens with different mesh sizes can be replaced through the disassembly and maintenance port on the side wall of the screening box 1 to adapt to different raw material particle size processing requirements. At the same time, during equipment operation, the operator can adjust the speed of each motor in real time through the controller 5 according to the hardness, moisture content and production capacity requirements of the raw materials, flexibly adjust the feeding speed, crushing intensity and screening vibration frequency, adapt to various production conditions, and greatly improve the production flexibility and versatility of the equipment.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material crushing device for the production of humic acid-urea-based compound fertilizer, characterized in that, The device includes a screening box (1), a crushing box (4) is fixedly installed on the top of the screening box (1), a feeding assembly (2) is provided on the top of the crushing box (4), and a crushing assembly (3) is provided between the screening box (1) and the crushing box (4); a vibration motor (6) is fixedly installed on the left side of the screening box (1), and a controller (5) is fixedly installed on the front of the screening box (1), and the controller (5) is electrically connected to the vibration motor (6); the feeding assembly (2) includes a conical hopper (21), a connecting hopper (22) is fixedly installed at the bottom of the conical hopper (21), the connecting hopper (22) is fixedly installed on the top of the crushing box (4), the connecting hopper (22) is connected to the inside of the crushing box (4), and a spiral stirring blade (24) is rotatably connected between the front and rear inner walls of the connecting hopper (22).

2. The raw material crushing device for producing humic acid-urea-based compound fertilizer according to claim 1, characterized in that: A first motor (23) is fixedly installed on the front of the connecting bucket (22). The output end of the first motor (23) moves through the inside of the connecting bucket (22) and is fixedly connected to the spiral stirring blade (24).

3. The raw material crushing device for the production of humic acid-urea-based compound fertilizer according to claim 2, characterized in that: A horizontal plate (25) is fixedly installed on the top of the conical bucket (21), and a stirring rod (26) is rotatably connected to the bottom of the horizontal plate (25). The stirring rod (26) is located inside the conical bucket (21) and above the spiral stirring blade (24). A second motor (27) is fixedly installed on the top of the horizontal plate (25). The output end of the second motor (27) moves through the interior of the horizontal plate (25) and is fixedly connected to the stirring rod (26).

4. The raw material crushing device for producing humic acid-urea-based compound fertilizer according to claim 3, characterized in that: The controller (5) is electrically connected to the first motor (23) and the second motor (27).

5. The raw material crushing device for the production of humic acid-urea-based compound fertilizer according to claim 1, characterized in that: The crushing assembly (3) includes two crushing rollers (35), both of which are rotatably connected to the front and rear inner walls of the crushing box (4). The connection between the connecting bucket (22) and the crushing box (4) is located between the two crushing rollers (35).

6. The raw material crushing device for the production of humic acid-urea-based compound fertilizer according to claim 1, characterized in that: The screening box (1) is fixedly installed with a screen (36) and a guide plate (37). The screen (36) is located above the guide plate (37). The left side of the screen (36) is higher than the right side, and the right side of the guide plate (37) is higher than the left side. Two crushing rollers (35) are located above the left side of the screen (36).

7. The raw material crushing device for producing humic acid-urea-based compound fertilizer according to claim 6, characterized in that: A first discharge hopper (38) is fixedly installed on the right side of the screening box (1), and a second discharge hopper (39) is fixedly installed on the left side of the screening box (1). A first discharge groove (310) is opened on the right side of the screening box (1), and a second discharge groove (311) is opened on the left side of the screening box (1). The first discharge groove (310) is located between the first discharge hopper (38) and the lowest point on the right side of the screen (36), and the screen (36) and the first discharge hopper (38) are interconnected through the first discharge groove (310). The second discharge groove (311) is located between the second discharge hopper (39) and the lowest point on the left side of the guide plate (37), and the guide plate (37) is connected to the second discharge hopper (39) through the second discharge groove (311).

8. The raw material crushing device for the production of humic acid-urea-based compound fertilizer according to claim 7, characterized in that: The screening box (1) is fixedly mounted with a shell (31) on the front. Inside the shell (31) are two first gears (33) and two second gears (34) rotatably connected by a rotating shaft. The two first gears (33) are fixedly connected to the corresponding crushing rollers (35) through a rotating shaft that movably penetrates the inside of the side wall of the screening box (1). The two first gears (33) mesh with the corresponding second gears (34) respectively, and the two second gears (34) mesh with each other. The shell (31) is fixedly mounted with a third motor (32) on the front. The output end of the third motor (32) movably penetrates the side wall of the shell (31) and is fixedly connected to the rotating shaft that connects to the left first gear (33). The third motor (32) is electrically connected to the controller (5).

9. The raw material crushing device for producing humic acid-urea-based compound fertilizer according to claim 6, characterized in that: The screen (36) is a replaceable screen, and the side wall of the screening box (1) is provided with a disassembly and maintenance port for replacing screens (36) with different mesh sizes.

10. The raw material crushing device for the production of humic acid-urea-based compound fertilizer according to claim 8, characterized in that: The controller (5) has a built-in speed adjustment module, which is electrically connected to the first motor (23), the second motor (27), the third motor (32) and the vibration motor (6) respectively, and is used to adjust the working speed of each motor.

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