A screening device for ammonium sulfate

Abstract

This disclosure relates to the technical field of ammonium sulfate processing. One embodiment of this disclosure provides a screening device for ammonium sulfate, comprising: a circular outer cover, a bottom shell, and a support frame. The circular outer cover is fixedly connected to the top of the bottom shell by bolts. The support frame is disposed at the bottom of the circular outer cover. A feeding screening assembly is disposed within the circular outer cover, and a waste-blocking and discharge assembly is disposed on the circular outer cover. The feeding screening assembly includes a partition, which is fixed to the top of the circular outer cover and covers the inside of the circular outer cover in a fan shape. A fixing plate is disposed at the top of the partition, and a rotating shaft driven by electricity is disposed at the bottom of the fixing plate. The rotating shaft is coaxial with the bottom shell, and a screen plate is disposed at the lower end of the rotating shaft. This technical solution solves the technical problems commonly found in existing ammonium sulfate screening devices, such as the inconvenience in collecting large particle residues and the difficulty in cleaning the interior of the device.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of ammonium sulfate processing, and more specifically, to a screening device for ammonium sulfate. Background Technology

[0002] In the ammonium sulfate production process, screening is a crucial step to ensure the uniformity of the finished product's particle size. The dried and crushed ammonium sulfate particles must be separated according to their specifications (e.g., 1-5mm finished particles, >8mm large impurities) to ensure the finished product meets packaging and usage standards. If large particles are mixed in with the ammonium sulfate, it can easily cause packaging bag blockage, clumping during transportation, and affect the dissolution rate during fertilization, reducing its effectiveness. However, traditional ammonium sulfate screening devices generally suffer from significant drawbacks, such as difficulty in collecting large particle residues and difficulty in cleaning the internal components, severely restricting production efficiency and product quality stability.

[0003] Traditional screening devices mostly use single-layer or double-layer fixed screen structures, and large particles will gradually accumulate on the screen surface. Due to the lack of a dedicated collection channel, operators need to stop the machine and manually scrape off the large particles on the screen surface. Each collection takes 10-15 minutes, which not only interrupts the production process, but also easily damages the screen due to scraping. Although some devices have side discharge ports, large particles are easy to get stuck in the discharge channel, requiring frequent disassembly and cleaning, which further increases maintenance costs.

[0004] Therefore, developing a screening device for ammonium sulfate that is easy to collect large particle residues and easy to clean 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 screening device for ammonium sulfate, which solves the technical problems that traditional screening devices for ammonium sulfate in the prior art are generally inconvenient to collect large particle residues and inconvenient to clean inside the device.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a sieving apparatus for ammonium sulfate, comprising: The circular outer cover, the bottom shell, and the support frame are provided. The circular outer cover is fixedly connected to the top of the bottom shell by bolts, and the support frame is provided at the bottom of the circular outer cover. A feeding screening assembly is disposed within the circular outer casing; A waste discharge blocking component is disposed on the circular outer cover; The feeding screening assembly includes a partition, which is fixed to the top of the circular outer cover. The partition covers the inside of the circular outer cover in a fan shape. A fixing plate is provided on the top of the partition, and a rotating shaft driven by electricity is provided at the bottom of the fixing plate. The rotating shaft is coaxial with the bottom shell, and a screen plate is provided at the lower end of the rotating shaft.

[0007] As a further technical solution, the surface of the sieve plate is provided with a boss, and the lower end of the rotating shaft is provided with a sleeve. The sieve plate is inserted into the sleeve from bottom to top through the boss, and the boss and the sleeve are fixedly connected by bolts.

[0008] As a further technical solution, the bottom of the shroud is spaced from the surface of the sieve plate, a feeding pipe is horizontally arranged inside the side surface of the shroud, a pushing auger is arranged inside the feeding pipe, a feeding hopper is arranged at the top of the feeding pipe, and a feeding port is opened at the bottom of the feeding pipe.

[0009] According to another aspect, in at least one embodiment of the present invention, the waste discharge blocking assembly includes an extension cover, the extension cover being fixed to the outer wall of the circular outer cover, the extension cover being connected to the inner wall of the circular outer cover, and a blocking plate being provided on the inner wall of the circular outer cover, the blocking plate being positioned corresponding to the circular outer cover.

[0010] As a further technical solution, the lower end of the barrier plate is bent to one side in an arc shape, and the lower end of the barrier plate slides against the surface of the sieve plate. A pull-out auger is horizontally rotatably connected inside the extension cover, and the pull-out auger is located on one side of the barrier plate.

[0011] As a further technical solution, the lower end of the auger slides and fits against the surface of the screen plate, a waste discharge port is opened on the outer surface of the extension cover, and a sliding hopper is provided on the outer side of the extension cover, with the sliding hopper located at the lower end of the waste discharge port.

[0012] As a further technical solution, the bottom of the bottom shell has a funnel-shaped structure, and the material discharge part at the bottom of the bottom shell is located at the center.

[0013] As a further technical solution, the feed inlet is evenly provided with several inlets.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the feeding and screening assembly solves the problems of low efficiency and easy accumulation in traditional screening by using continuous feeding and rotary screening design. A pusher auger, combined with multiple feed ports, ensures uniform material supply and avoids localized overload of the screen plate; the rotating shaft drives the screen plate to rotate, using centrifugal force to accelerate material separation and improve screening efficiency; the detachable screen plate adapts to different particle size requirements and is easy to clean and maintain. This structure eliminates the need for frequent shutdowns for cleaning, enabling continuous batch screening of ammonium sulfate, ensuring uniform particle size of the undersize material, reducing manual intervention and labor intensity, providing qualified raw materials for subsequent packaging or processing, and meeting the needs of large-scale ammonium sulfate production. 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; In the diagram: 1. Circular outer cover; 2. Bottom shell; 3. Support frame; 4. Feeding and screening assembly; 4-1. Partition cover; 4-2. Fixing plate; 4-3. Rotating shaft; 4-4. Screen plate; 4-5. Boss; 4-6. Sleeve; 4-7. Feeding pipe; 4-8. Pushing auger; 4-9. Feeding hopper; 4-10. Feed inlet; 5. Waste discharge assembly; 5-1. Extension cover; 5-2. Barrier plate; 5-3. Carrying auger; 5-4. Waste discharge port; 5-5. Sliding hopper. 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 1-3 As shown, a sieving apparatus for ammonium sulfate in one embodiment of this disclosure is illustrated, comprising: The circular outer cover 1, the bottom shell 2, and the support frame 3 are provided. The circular outer cover 1 is fixedly connected to the top of the bottom shell 2 by bolts, and the support frame 3 is provided at the bottom of the circular outer cover 1. Feed screening assembly 4, wherein the feed screening assembly 4 is disposed in the circular outer cover 1; Waste discharge blocking component 5 is disposed on the circular outer cover 1; The feeding screening assembly 4 includes a partition 4-1, which is fixed to the top of the circular outer cover 1. The partition 4-1 covers the inside of the circular outer cover 1 in a fan shape. A fixing plate 4-2 is provided on the top of the partition 4-1, and a rotating shaft 4-3 driven by electricity is provided at the bottom of the fixing plate 4-2. The rotating shaft 4-3 is coaxial with the bottom shell 2. A screen plate 4-4 is provided at the lower end of the rotating shaft 4-3. A boss 4-5 is provided on the surface of the screen plate 4-4. A sleeve is provided at the lower end of the rotating shaft 4-3. The sieve plate 4-4 is inserted into the sleeve 4-6 from bottom to top through the boss 4-5. The boss 4-5 and the sleeve 4-6 are fixedly connected by bolts. The bottom of the cover 4-1 is separated from the surface of the sieve plate 4-4. A feed pipe 4-7 is horizontally arranged inside the side surface of the cover 4-1. A pusher auger 4-8 is arranged inside the feed pipe 4-7. A feeding hopper 4-9 is arranged at the top of the feed pipe 4-7. A feed port 4-10 is opened at the bottom of the feed pipe 4-7.

[0024] In some examples, in order to achieve continuous and efficient screening of ammonium sulfate materials and avoid the low efficiency and material accumulation caused by traditional static screening, and to adapt to the batch screening needs in ammonium sulfate production, a feeding screening component 4 was designed. This component includes a fan-shaped partition 4-1 fixed to the top of a circular outer cover 1, which can separate the feeding area from the screening area, prevent the material from splashing in all directions when feeding, and provide installation support for the fixed plate 4-2 and the rotating shaft 4-3.

[0025] The fixing plate 4-2 at the top of the diaphragm 4-1 is welded and fixed, and its bottom is connected to the electrically driven rotating shaft 4-3 through a bearing, ensuring that the rotating shaft 4-3 can rotate stably around the coaxial center of the circular outer cover 1 and the bottom shell 2, providing a power basis for the rotation of the screen plate 4-4.

[0026] The sleeve 4-6 at the lower end of the rotating shaft 4-3 mates with the boss 4-5 on the surface of the sieve plate 4-4. The sieve plate 4-4 is inserted into the sleeve 4-6 from bottom to top through the boss 4-5 and then fixed by bolts. This detachable structure makes it easy to replace the sieve plate 4-4 with different apertures according to screening requirements, adapting to different particle size screening standards of ammonium sulfate, and also facilitating the cleaning and maintenance of the sieve plate 4-4.

[0027] When the rotating shaft 4-3 drives the screen plate 4-4 to rotate synchronously, the material on the surface of the screen plate 4-4 moves towards the edge under the action of centrifugal force. During the process, the material that meets the particle size requirements falls into the bottom shell 2 through the screen holes for collection, while the large particles that do not meet the requirements remain on the surface of the screen plate 4-4, thus achieving material separation.

[0028] The feed pipe 4-7, horizontally arranged inside the side surface of the diaphragm 4-1, has a feeding hopper 4-9 at its top providing an inlet for ammonium sulfate material. The funnel-shaped structure guides the material smoothly into the pipe, preventing material from accumulating and clogging at the feeding port. The pusher auger 4-8 inside the feed pipe 4-7 is electrically driven to rotate, continuously and evenly pushing the material entering from the feeding hopper 4-9 towards the feeding port 4-10 at the bottom of the feed pipe 4-7. The material then falls from the feeding port 4-10 onto the rotating screen plate 4-4, achieving synchronous coordination between continuous feeding and rotary screening. This avoids overloading the screen plate 4-4 due to a large amount of material being fed in at once, ensuring stable screening efficiency and accuracy.

[0029] The bottom of the shroud 4-1 is separated from the surface of the screen plate 4-4, which allows larger particles that are not screened to be transported to the outside of the shroud 4-1, ensuring the relative independence of the feeding and screening areas.

[0030] During operation, the auger 4-8 continuously feeds the material to the screen plate 4-4. The rotating shaft 4-3 drives the screen plate 4-4 to rotate and screen. Material that meets the requirements falls into the bottom shell 2, while large particles remain on the screen plate 4-4. Continuous feeding and rotary screening work together to improve screening efficiency. The detachable screen plate 4-4 enhances adaptability and meets the batch screening needs of ammonium sulfate.

[0031] like Figures 1-3 As shown in the figure, the waste discharge blocking assembly 5 proposed in this embodiment includes an extension cover 5-1, which is fixed to the outer wall of the circular outer cover 1 and is connected to the inner wall of the circular outer cover 1. A blocking plate 5-2 is provided on the inner wall of the circular outer cover 1, and the blocking plate 5-2 is positioned corresponding to the circular outer cover 1. The lower end of the blocking plate 5-2 is bent to one side in an arc shape and slides against the surface of the screen plate 4-4. A pull-out auger 5-3 is horizontally rotatably connected inside the extension cover 5-1. The pull-out auger 5-3 is located on one side of the blocking plate 5-2 and its lower end slides against the surface of the screen plate 4-4. A waste discharge port 5-4 is opened on the outer surface of the extension cover 5-1, and a sliding hopper 5-5 is provided on the outer side of the extension cover 5-1. The sliding hopper 5-5 is located at the lower end of the waste discharge port 5-4.

[0032] In some examples, in order to accurately intercept and directionally discharge large particles that are not filtered during the ammonium sulfate screening process, prevent large particles from being mixed into the collection area with the undersize material, and prevent large particles from accumulating on the surface of the screen plate 4-4 and affecting screening efficiency, and to meet the needs of impurity separation after ammonium sulfate screening, a waste discharge component 5 is designed. This component includes an extension cover 5-1 fixed to the outer wall of the circular outer cover 1 and connected to the inner wall of the circular outer cover 1 to form a discharge channel for large particle residues. Its internal space can accommodate the auger 5-3 and the baffle plate 5-2 to prevent large particles from scattering outside the device during discharge, thereby reducing material waste and environmental pollution.

[0033] The baffle plate 5-2 on the inner wall of the circular outer cover 1 corresponds to the position of the extension cover 5-1. It can accurately intercept large particles that move towards the edge of the sieve plate 4-4 as it rotates. The lower end of the baffle plate 5-2 is curved and bent to one side, and slides against the surface of the sieve plate 4-4. The curved structure does not affect the normal rotation of the sieve plate 4-4, and the fitting design prevents large particles from leaking through the gap between the baffle plate 5-2 and the sieve plate 4-4, ensuring that large particles are completely intercepted and guided to the direction of the extension cover 5-1, thus avoiding the accumulation of large particles on the surface of the sieve plate 4-4.

[0034] The horizontally rotating auger 5-3 inside the extension hood 5-1 is located on one side of the baffle plate 5-2. Its lower end slides against the surface of the sieve plate 4-4, which can guide the baffle plate 5-2 to continuously transport large particle residues inside the extension hood 5-1 to the waste discharge port 5-4 on the outer surface of the extension hood 5-1.

[0035] The auger 5-3 is driven by electricity to rotate, and the conveying process is stable and controllable, avoiding the accumulation and blockage of large particles in the extension hood 5-1, and ensuring smooth waste discharge.

[0036] The sliding hopper 5-5 on the outside of the extension cover 5-1 is located at the lower end of the waste discharge port 5-4 and has an inclined structure. It can guide the large particle residue discharged from the waste discharge port 5-4 to an external collection container (such as a waste bucket) to avoid large particles falling directly and causing scattering, while reducing the amount of manual cleaning of the waste discharge port 5-4.

[0037] During operation, the screen plate 4-4 rotates, causing large particles to move towards the edge. The baffle plate 5-2 intercepts the large particles and guides them to the extension hood 5-1, which then carries the large particles out through the auger 5-3 to the waste discharge port 5-4. From there, the particles fall into the collection container via the sliding hopper 5-5. The baffle plate 5-2 ensures that no large particles are missed, the auger 5-3 enables directional waste discharge, and the sliding hopper 5-5 guides the collection. All components work together to intercept and discharge any remaining large particles, ensuring the purity of the ammonium sulfate under the screen and preventing large particles from affecting subsequent production.

[0038] For example, such as Figure 3 As shown, the bottom of the bottom shell 2 has a funnel-shaped structure, and the material discharge part at the bottom of the bottom shell 2 is located at the center.

[0039] In some examples, the bottom of the shell 2 has a funnel-shaped structure, with the bottom discharge section located at the center. This design uses gravity to guide the ammonium sulfate material, after being screened by sieve plate 4-4, towards the center of the shell 2, preventing material from accumulating and remaining on the inner wall of the shell 2. This ensures that the qualified material can be completely discharged from the central discharge section, reducing waste. Compared to a flat-bottom structure, the funnel-shaped structure shortens the material's falling path, speeds up the material discharge, and avoids clumping problems caused by material retention.

[0040] For example, such as Figure 3 As shown, several feed inlets 4-10 are evenly distributed.

[0041] In some examples, several feed inlets 4-10 are evenly distributed. This design allows the ammonium sulfate material in the feed pipe 4-7 to be evenly distributed on the rotating screen plate 4-4 through multiple feed inlets 4-10, avoiding material concentration in a certain area of ​​the screen plate 4-4 and causing local overload, ensuring uniform material thickness on the surface of the screen plate 4-4, thereby improving screening accuracy and efficiency.

[0042] In actual use: Ammonium sulfate material is poured into the feeding hopper 4-9 of the feeding screening component 4, and the pushing auger 4-8 in the feeding pipe 4-7 is started. The material continuously falls onto the rotating screen plate 4-4 through the evenly distributed feed inlets 4-10. The rotating shaft 4-3 at the bottom of the fixed plate 4-2 drives the screen plate 4-4 to rotate under electric drive. The material moves towards the edge of the screen plate 4-4 under the action of centrifugal force. The material that meets the particle size requirements falls into the funnel-shaped bottom shell 2 through the screen holes and is finally discharged and collected from the central discharge section. Large particles remaining on the surface of the screen plate 4-4 rotate with the screen plate 4-4 to the blocking and waste discharge component 5. The blocking plate 5-2 on the inner wall of the circular outer cover 1 (the lower end slides against the screen plate 4-4) intercepts the large particles and guides them to the extension cover 5-1. The auger 5-3 in the extension cover 5-1 is started, which transports the large particles to the waste discharge port 5-4, and then falls into the external collection container through the sliding hopper 5-5. If screen plate 4-4 needs to be replaced, loosen the bolts between boss 4-5 and sleeve 4-6, remove the old screen plate 4-4 from bottom to top, replace it with the new screen plate 4-4 and then fix it again. The whole process realizes continuous screening of ammonium sulfate and automatic collection of large particles.

[0043] 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 sieving device for ammonium sulfate, characterized in that, include: A circular outer cover (1), a bottom shell (2), and a support frame (3) are provided. The circular outer cover (1) is fixedly connected to the top of the bottom shell (2) by bolts, and the support frame (3) is provided at the bottom of the circular outer cover (1). Feed screening assembly (4), wherein the feed screening assembly (4) is disposed in the circular outer cover (1); Waste discharge blocking component (5), which is disposed on the circular outer cover (1); The feeding screening assembly (4) includes a shroud (4-1), which is fixed to the top of the circular outer cover (1). The shroud (4-1) covers the inside of the circular outer cover (1) in a fan shape. A fixing plate (4-2) is provided on the top of the shroud (4-1). A rotating shaft (4-3) driven by electricity is provided at the bottom of the fixing plate (4-2). The rotating shaft (4-3) is coaxial with the bottom shell (2). A screen plate (4-4) is provided at the lower end of the rotating shaft (4-3).

2. The ammonium sulfate screening device according to claim 1, characterized in that, The sieve plate (4-4) is provided with a boss (4-5) on its surface, and a sleeve (4-6) is provided at the lower end of the rotating shaft (4-3). The sieve plate (4-4) is inserted into the sleeve (4-6) from bottom to top through the boss (4-5), and the boss (4-5) and the sleeve (4-6) are fixedly connected by bolts.

3. The ammonium sulfate screening device according to claim 2, characterized in that, The bottom of the shroud (4-1) is spaced from the surface of the sieve plate (4-4). A feed pipe (4-7) is horizontally arranged inside the side surface of the shroud (4-1). A pusher auger (4-8) is arranged inside the feed pipe (4-7). A feeding hopper (4-9) is arranged at the top of the feed pipe (4-7). A feed inlet (4-10) is opened at the bottom of the feed pipe (4-7).

4. The ammonium sulfate screening device according to claim 1, characterized in that, The waste discharge blocking assembly (5) includes an extension cover (5-1), which is fixed to the outer wall of the circular outer cover (1). The extension cover (5-1) is connected to the inner wall of the circular outer cover (1). A blocking plate (5-2) is provided on the inner wall of the circular outer cover (1), and the blocking plate (5-2) is positioned corresponding to the circular outer cover (1).

5. A sieving device for ammonium sulfate according to claim 4, characterized in that, The lower end of the barrier plate (5-2) is bent to one side in an arc shape. The lower end of the barrier plate (5-2) slides against the surface of the sieve plate (4-4). A pull-out auger (5-3) is horizontally rotatably connected inside the extension cover (5-1). The pull-out auger (5-3) is located on one side of the barrier plate (5-2).

6. A sieving device for ammonium sulfate according to claim 5, characterized in that, The lower end of the auger (5-3) slides and fits against the surface of the screen plate (4-4). The outer surface of the extension cover (5-1) is provided with a waste discharge port (5-4). A sliding hopper (5-5) is provided on the outer side of the extension cover (5-1). The sliding hopper (5-5) is located at the lower end of the waste discharge port (5-4).

7. A sieving device for ammonium sulfate according to claim 1, characterized in that, The bottom of the bottom shell (2) has a funnel-shaped structure, and the material discharge part at the bottom of the bottom shell (2) is located at the center.

8. A sieving device for ammonium sulfate according to claim 3, characterized in that, The feed inlets (4-10) are evenly distributed in several places.

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