A broken mixer for ammonium sulfate production

Abstract

The present disclosure relates to the technical field of ammonium sulfate production, and one embodiment of the present disclosure provides a crushing and mixing machine for ammonium sulfate production, which comprises a processing cylinder and a chassis, the processing cylinder is horizontally fixed on the chassis, a feeding and crushing assembly is arranged outside the processing cylinder, a rotary cover is rotationally connected to one end of the processing cylinder, a fine grinding and crushing assembly is arranged in the processing cylinder and the rotary cover, a discharging assembly is arranged at the bottom of the processing cylinder, the fine grinding and crushing assembly comprises a pair of grinding rollers, the grinding rollers are rotationally connected to both ends of the surface of the rotary cover, the grinding rollers are rollingly attached to the inner wall of the processing cylinder, the surface of the rotary cover is provided with a plurality of turning plates, and the outer surface of the rotary cover is provided with an external gear. Through the above technical scheme, the technical problem that the particles are prone to be in a stacked state in the prior art, resulting in poor drying effect, is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of ammonium sulfate production, and more specifically, to a crushing and mixing machine for ammonium sulfate production. Background Technology

[0002] In fertilizer production and chemical synthesis, ammonium sulfate granules are important nitrogen fertilizer raw materials and industrial intermediates. Their moisture content directly affects storage stability (moisture content exceeding 1% easily leads to clumping), transportation safety, and subsequent performance. Therefore, drying is a core process in ammonium sulfate granule production, requiring the moisture content to be reduced from the initial 5%-8% to below 0.5%. However, traditional ammonium sulfate granule drying equipment generally suffers from the significant drawback of granules easily accumulating, resulting in poor drying efficiency and severely restricting product quality stability.

[0003] Traditional drying equipment often employs structures such as fixed beds and single-layer conveyor belts, where ammonium sulfate particles are statically piled or shallowly spread within the drying chamber. The drying medium can only act on the surface of the particles, failing to penetrate the pile to reach the interior. This results in a significant difference in moisture content between the inside and outside of the particles, with surface particles easily over-dried (leading to breakage), while internal particles remain undried, resulting in insufficient drying uniformity. To improve the results, some equipment requires extending the drying time, which not only reduces production capacity but also increases energy consumption.

[0004] Therefore, developing a drying device for ammonium sulfate solid particles that can break the particle packing state and improve drying uniformity has become an urgent need for the industry to improve quality and efficiency. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a crushing and mixing machine for ammonium sulfate production, which solves the technical problem that the particles in traditional ammonium sulfate solid particle drying devices in the prior art are prone to accumulating, resulting in poor drying effect.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a crushing and mixing machine for ammonium sulfate production, comprising: The processing cylinder and the base frame are provided, with the processing cylinder being horizontally fixed on the base frame. A feeding and crushing assembly is disposed outside the processing cylinder; A rotating cover and a fine grinding assembly are provided. The rotating cover is rotatably connected to one end of the processing cylinder, and the fine grinding assembly is disposed in the processing cylinder and the rotating cover. A discharge assembly is disposed at the bottom of the processing cylinder; The fine grinding assembly includes a pair of grinding rollers, which are horizontally rotatably connected to both ends of the rotating cover surface. The grinding rollers roll and adhere to the inner wall of the processing cylinder. The rotating cover surface is provided with several turning plates, and an external gear is provided around the outer surface of the rotating cover.

[0007] As a further technical solution, the outer wall of the processing cylinder is provided with a drive gear that is driven by electricity to rotate. The drive gear meshes with the external gear, and a drive motor is horizontally connected to one side of the base frame.

[0008] As a further technical solution, the output end of the drive motor is provided with a main gear, and one end of each grinding roller is provided with a secondary gear, and the main gear meshes with the secondary gear.

[0009] According to another aspect, in at least one embodiment of the present invention, the feeding and crushing assembly includes a feeding box connected to the upper end of the side surface of the processing cylinder, a pair of crushing rollers are provided inside the feeding box, the crushing rollers are driven to rotate by electricity, and a pair of feeding shields are provided at the upper end of the feeding box.

[0010] As a further technical solution, the discharge assembly includes a collection hood connected to the bottom of the processing cylinder, and a discharge auger is provided inside the collection hood, which is driven to rotate by electricity.

[0011] As a further technical solution, the bottom of the processing cylinder is provided with an outlet, and a sealing cover is horizontally slidably inserted into the outlet. A telescopic cylinder is provided on the outside of the collection cover, and the output end of the telescopic cylinder is connected to the sealing cover.

[0012] As a further technical solution, both ends of the bottom surface of the feed box are inclined structural surfaces.

[0013] As a further technical solution, the surface of the crushing roller is all toothed.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the fine grinding assembly solves the problem of uneven particle grinding in traditional grinding equipment through a dual-roller grinding and material turning design. The grinding rollers fit snugly against the inner wall of the processing cylinder, and their counter-rotation achieves fine grinding, ensuring uniform particle fineness. The material turning plate rotates synchronously with the rotating cover, preventing raw material accumulation and ensuring that all raw materials can contact the grinding rollers, eliminating grinding dead zones. The meshing of the drive gear and the external gear ensures stable rotation speed of the rotating cover, and the linkage of the main and auxiliary gears ensures synchronous operation of the grinding rollers. The overall structure reduces the fine grinding load, improves grinding efficiency, and is suitable for the strict requirements of ammonium sulfate production for raw material fineness, providing a high-quality raw material foundation for subsequent mixing or processing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 This is another isometric view of the present disclosure; In the diagram: 1. Processing cylinder; 2. Base frame; 3. Rotating cover; 4. Fine grinding and crushing assembly; 4-1. Grinding roller; 4-2. Tilting plate; 4-3. External gear; 4-4. Drive gear; 4-5. Drive motor; 4-6. Main gear; 4-7. Secondary gear; 5. Feeding and crushing assembly; 5-1. Feed box; 5-2. Crushing roller; 5-3. Feed shield; 6. Discharge assembly; 6-1. Collection cover; 6-2. Discharge auger; 6-3. Discharge port; 6-4. Sealing cover; 6-5. Telescopic cylinder. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, a crushing and mixing machine for ammonium sulfate production is illustrated in one embodiment of this disclosure, comprising: The processing cylinder 1 and the base frame 2 are provided, with the processing cylinder 1 horizontally fixed on the base frame 2. Feeding and crushing assembly 5, wherein the feeding and crushing assembly 5 is disposed outside the processing cylinder 1; The rotating cover 3 and the fine grinding component 4 are rotatably connected to one end of the processing cylinder 1, and the fine grinding component 4 is disposed in the processing cylinder 1 and the rotating cover 3. The discharge component 6 is disposed at the bottom of the processing cylinder 1; The fine grinding assembly 4 includes a pair of grinding rollers 4-1, which are horizontally rotatably connected to both ends of the surface of the rotating cover 3. The grinding rollers 4-1 roll and adhere to the inner wall of the processing cylinder 1. The surface of the rotating cover 3 is provided with several turning plates 4-2. An external gear 4-3 is provided around the outer surface of the rotating cover 3. A drive gear 4-4, which is driven by electricity, is provided on the outer wall of the processing cylinder 1. The drive gear 4-4 meshes with the external gear 4-3. A drive motor 4-5 is horizontally connected to one side of the base frame 2. A main gear 4-6 is provided at the output end of the drive motor 4-5. A secondary gear 4-7 is provided at one end of each grinding roller 4-1. The main gear 4-6 meshes with the secondary gear 4-7.

[0024] In some examples, in order to achieve thorough grinding and pulverization of ammonium sulfate raw materials and avoid uneven particle size affecting subsequent production, while using a material turning structure to ensure that the raw materials are in full contact with the grinding components to improve the uniformity of grinding, and to meet the strict requirements of ammonium sulfate production for the fineness of raw materials, a fine grinding component 4 was designed. This component includes a pair of grinding rollers 4-1 that are horizontally rotatably connected at both ends of the surface of the rotating cover 3. They are connected to the rotating cover 3 through bearings, and the surface of the rollers can be set with wear-resistant grinding texture to enhance the grinding effect.

[0025] The grinding roller 4-1 rolls and adheres to the inner wall of the processing cylinder 1, ensuring that the roller can apply a uniform grinding force to the raw material in the processing cylinder 1 when it rotates, further refining the raw material after preliminary crushing.

[0026] Several flipping plates 4-2 on the surface of the rotating cover 3 are evenly distributed along the circumference and can rotate synchronously with the rotating cover 3. During the rotation, the flipping plates 4-2 can flip the raw materials at the bottom of the processing cylinder 1 upwards, preventing the raw materials from accumulating at the bottom of the cylinder and failing to contact the grinding roller 4-1, ensuring that all raw materials can be fully ground.

[0027] The external gear 4-3 around the outer surface of the rotating cover 3 meshes with the electrically driven drive gear 4-4 on the outer wall of the processing cylinder 1. When the drive gear 4-4 rotates, it drives the external gear 4-3 to rotate synchronously with the rotating cover 3, providing power for the turning plate 4-2 to turn the raw materials, while ensuring that the rotation speed of the rotating cover 3 is stable and ensuring that the turning and grinding rhythms are coordinated.

[0028] The drive motor 4-5, which is horizontally connected to one side of the base frame 2, provides rotational power to the grinding roller 4-1. The main gear 4-6 at the output end of the drive motor 4-5 meshes with the auxiliary gear 4-7 at one end of the grinding roller 4-1. After the motor starts, the main gear 4-6 drives the two auxiliary gears 4-7 to rotate synchronously, thereby driving the grinding roller 4-1 to rotate. The meshing transmission of the main and auxiliary gears 4-7 can ensure that the two grinding rollers 4-1 rotate at the same speed and in opposite directions, forming a squeezing and grinding effect on the raw materials, thereby improving the crushing efficiency.

[0029] During operation, the drive gear 4-4 drives the rotating cover 3 and the tipping plate 4-2 to rotate, the drive motor 4-5 drives the grinding roller 4-1 to rotate, and the tipping plate 4-2 flips the raw material between the grinding roller 4-1 and the inner wall of the processing cylinder 1, completing thorough grinding. The double-roller grinding ensures fineness, the tipping ensures all-round processing, the linkage drive maintains stable operation, and all components work together to achieve the fine grinding and pulverization requirements of the raw material.

[0030] like Figures 1-4 As shown in the figure, the feeding and crushing assembly 5 in this embodiment includes a feeding box 5-1, which is connected to the upper end of the side surface of the processing cylinder 1. A pair of crushing rollers 5-2 are provided inside the feeding box 5-1. The crushing rollers 5-2 are driven to rotate by electricity. A pair of feeding shields 5-3 are provided at the upper end of the feeding box 5-1.

[0031] In some examples, in order to achieve preliminary crushing of the larger particles of ammonium sulfate raw material, reduce the workload of the subsequent fine grinding component 4, and ensure smooth feeding and safe operation, a feeding and crushing component 5 is designed. This component includes a feeding box 5-1 connected to the upper part of the side surface of the processing cylinder 1. It has a funnel-shaped structure, with its top opening serving as the raw material inlet and its bottom communicating with the inside of the processing cylinder 1. This allows the raw material to be guided to fall accurately into the processing cylinder 1, preventing the raw material from scattering outside the processing cylinder 1.

[0032] A pair of crushing rollers 5-2 inside the feed box 5-1 are rotatably connected to the inner wall of the feed box 5-1 through bearings and connected to the output end of an external electric drive unit (such as a geared motor). After the motor starts, it drives the two crushing rollers 5-2 to rotate in opposite directions. The large particles of raw material are squeezed and sheared by the protrusions or toothed structures on the surface of the roller body, crushing them into smaller particles, laying the foundation for subsequent fine grinding. A pair of feed shields 5-3 at the upper end of the feed box 5-1 are symmetrically distributed above the crushing rollers 5-2 and are set at an inclination, with their edges extending to the upper part of the feed side of the crushing rollers 5-2.

[0033] The shield can prevent raw materials from splashing due to airflow or impact force generated by the rotation of the crushing roller 5-2 when the raw materials are fed in, thus avoiding injury to operators or waste of raw materials. At the same time, it can guide the raw materials to concentrate in the gap between the two crushing rollers 5-2, ensuring that the raw materials can be accurately fed into the crushing roller 5-2 for pre-crushing, and preventing the raw materials from accumulating and blocking the inner wall of the feed box 5-1.

[0034] During operation, large-particle raw materials are poured into the feed box 5-1. The shield guides the raw materials to the space between the crushing rollers 5-2. The crushing rollers 5-2 rotate to initially crush the raw materials. The crushed raw materials fall into the processing cylinder 1 through the bottom of the feed box 5-1 and enter the fine grinding stage. The double-roller pre-crushing reduces the subsequent load, the shield ensures safety and accurate feeding, and the directional guide ensures a smooth process. All components work together to complete the initial crushing and feeding of the raw materials.

[0035] like Figures 1-4 As shown in the figure, the discharge assembly 6 in this embodiment includes a collection cover 6-1, which is connected to the bottom of the processing cylinder 1. A discharge auger 6-2 is provided inside the collection cover 6-1. The discharge auger 6-2 is driven to rotate by electricity. A discharge port 6-3 is opened at the bottom of the processing cylinder 1. A sealing cover 6-4 is horizontally slidably inserted into the discharge port 6-3. A telescopic cylinder 6-5 is provided on the outside of the collection cover 6-1. The output end of the telescopic cylinder 6-5 is connected to the sealing cover 6-4.

[0036] In some examples, in order to achieve efficient collection and directional discharge of ammonium sulfate material after fine grinding, avoid the material from getting damp or scattering during the discharge process, and ensure that the discharge speed is controllable to meet the feeding needs of subsequent production stages and ensure the coordinated operation of the crusher and downstream equipment, a discharge component 6 is designed. This component includes a collection cover 6-1 connected to the bottom of the processing cylinder 1, which has an inverted conical or arc-shaped structure. It can receive the material falling from the discharge port 6-3 of the processing cylinder 1, forming a relatively closed discharge space to prevent the material from scattering and polluting the environment when it falls. At the same time, it provides installation and working space for the discharge auger 6-2.

[0037] The discharge auger 6-2 inside the collection hood 6-1 is rotatably connected to the inner wall of the collection hood 6-1 via bearings and is fixedly connected to the output end of an external electric drive unit (such as a motor). After the motor starts, it drives the auger to rotate, which can stably transport the material inside the collection hood 6-1 to the outlet of the collection hood 6-1, realize the directional transfer of the material, and avoid the material from accumulating and blocking inside the collection hood 6-1.

[0038] The discharge port 6-3 at the bottom of the processing cylinder 1 is connected to the inside of the collection hood 6-1, which is the channel for materials to enter the collection hood 6-1 from the processing cylinder 1. The sealing cover 6-4, which is horizontally slidably inserted inside the discharge port 6-3, can be opened and closed by sliding. When closed, it can ensure that a relatively closed crushing space is formed inside the processing cylinder 1, preventing dust from escaping or external moisture from entering during the crushing process, and ensuring a stable crushing environment.

[0039] The telescopic cylinder 6-5 on the outside of the collection cover 6-1 has its output end fixedly connected to the sealing cover 6-4. The telescopic cylinder 6-5 can extend and retract to drive the sealing cover 6-4 to slide horizontally along the discharge port 6-3, realizing the automatic opening and closing of the discharge port 6-3 without manual operation, improving work efficiency, and ensuring the precise movement of the sealing cover 6-4 to avoid material leakage due to improper manual operation.

[0040] During operation, after crushing, the telescopic cylinder 6-5 retracts, causing the sealing cover 6-4 to open the discharge port 6-3, allowing the material to fall into the collection hood 6-1. The discharge auger 6-2 rotates, conveying the material to downstream equipment. After discharge, the telescopic cylinder 6-5 extends to close the sealing cover 6-4. Controllable discharge ensures process coordination, sealing protection ensures environmental and material quality, stable conveying adapts to downstream needs, and all components work together to complete material collection and discharge.

[0041] For example, such as Figure 3 As shown, both ends of the bottom surface of the feed box 5-1 are inclined structural surfaces.

[0042] In some examples, both ends of the bottom surface of the feed box 5-1 are inclined. This design allows the pre-crushed ammonium sulfate raw material to be guided by gravity to converge towards the middle and bottom outlet of the feed box 5-1, avoiding the formation of dead corners and accumulation of raw material at both ends of the bottom surface. The inclined surface reduces the contact area between the raw material and the bottom of the box, reduces frictional resistance, and allows the raw material to slide more smoothly into the processing cylinder 1 without the need for manual cleaning, thus improving feeding efficiency.

[0043] For example, such as Figure 3 As shown, the surface of the crushing roller 5-2 is all toothed.

[0044] In some examples, the surface of the crushing roller 5-2 is toothed. The toothed protrusions enhance the crushing roller 5-2's ability to grip and shear large particles of ammonium sulfate raw material. Compared to a smooth roller surface, it can more efficiently break down agglomerated or larger particles of raw material. The toothed structure applies concentrated extrusion and shearing forces to the raw material through interlocking action, which can quickly break down even hard ammonium sulfate agglomerates into smaller particles, reducing the workload of the subsequent fine grinding assembly 4.

[0045] In actual use: Ammonium sulfate raw material is poured into the feed box 5-1 of the feeding and crushing assembly 5. The raw material is guided by the feed shield 5-3 to the space between a pair of crushing rollers 5-2. The crushing rollers 5-2 are electrically driven to rotate in the opposite direction to initially crush large particles of raw material. The crushed raw material falls into the processing cylinder 1 along the inclined bottom surface of the feed box 5-1. The fine grinding and crushing assembly 4 is started. The drive gear 4-4 on the outer wall of the processing cylinder 1 drives the outer gear 4-3 of the rotating cover 3 to rotate, so that the rotating cover 3 and the surface turning plate 4-2 rotate synchronously. The turning plate 4-2 continuously turns the raw material in the processing cylinder 1. At the same time, the drive motor 4-5 on one side of the base frame 2 meshes with the auxiliary gear 4-7 through the main gear 4-6 to drive a pair of grinding rollers 4-1 to rotate in the opposite direction. The grinding rollers 4-1 roll and adhere to the inner wall of the processing cylinder 1 to finely grind the turned raw material. After grinding is completed, the telescopic cylinder 6-5 of the discharge component 6 is activated, the sealing cover 6-4 is pulled to open the bottom discharge port 6-3 of the processing cylinder 1, the material falls into the collection hood 6-1, and the discharge auger 6-2 rotates to transport the material to the external collection device in a directional manner. The entire process realizes the automated processing of raw materials from initial crushing to fine grinding and then to orderly discharge.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A crushing and mixing machine for ammonium sulfate production, characterized in that, include: The processing cylinder (1) and the base frame (2) are provided, wherein the processing cylinder (1) is horizontally fixed on the base frame (2); Feeding and crushing assembly (5), the feeding and crushing assembly (5) is disposed outside the processing cylinder (1); A rotating cover (3) and a fine grinding assembly (4) are provided. The rotating cover (3) is rotatably connected to one end of the processing cylinder (1), and the fine grinding assembly (4) is disposed in the processing cylinder (1) and the rotating cover (3). The discharge assembly (6) is disposed at the bottom of the processing cylinder (1); The fine grinding assembly (4) includes a pair of grinding rollers (4-1), which are horizontally rotatably connected to both ends of the surface of the rotating cover (3). The grinding rollers (4-1) roll and fit against the inner wall of the processing cylinder (1). The surface of the rotating cover (3) is provided with several turning plates (4-2), and an external gear (4-3) is provided around the outer surface of the rotating cover (3).

2. The crushing and mixing machine for ammonium sulfate production according to claim 1, characterized in that, The outer wall of the processing cylinder (1) is provided with a drive gear (4-4) that is driven to rotate by electricity. The drive gear (4-4) meshes with the external gear (4-3). A drive motor (4-5) is horizontally connected to one side of the base frame (2).

3. The crushing and mixing machine for ammonium sulfate production according to claim 2, characterized in that, The output end of the drive motor (4-5) is provided with a main gear (4-6), and one end of each grinding roller (4-1) is provided with a secondary gear (4-7). The main gear (4-6) meshes with the secondary gear (4-7).

4. The crushing and mixing machine for ammonium sulfate production according to claim 1, characterized in that, The feeding and crushing assembly (5) includes a feeding box (5-1), which is connected to the upper end of the side surface of the processing cylinder (1). A pair of crushing rollers (5-2) are provided inside the feeding box (5-1), and the crushing rollers (5-2) are driven to rotate by electricity. A pair of feeding shields (5-3) are provided at the upper end of the feeding box (5-1).

5. The crushing and mixing machine for ammonium sulfate production according to claim 1, characterized in that, The discharge assembly (6) includes a collection hood (6-1), which is connected to the bottom of the processing cylinder (1). A discharge auger (6-2) is provided inside the collection hood (6-1), and the discharge auger (6-2) is driven to rotate by electricity.

6. The crushing and mixing machine for ammonium sulfate production according to claim 5, characterized in that, The bottom of the processing cylinder (1) is provided with an outlet (6-3), and a sealing cover (6-4) is horizontally slidably inserted into the outlet (6-3). A telescopic cylinder (6-5) is provided on the outside of the collection cover (6-1), and the output end of the telescopic cylinder (6-5) is connected to the sealing cover (6-4).

7. The crushing and mixing machine for ammonium sulfate production according to claim 4, characterized in that, Both ends of the bottom surface of the feed box (5-1) are inclined structural surfaces.

8. A crushing and mixing machine for ammonium sulfate production according to claim 4, characterized in that, The surface of the crushing roller (5-2) is toothed.

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