Multi-layer screening and grading device for chemical raw materials

Abstract

The utility model discloses a chemical raw material multi-layer screening and grading device, which belongs to the technical field of chemical raw material screening treatment, and adopts the technical scheme that the chemical raw material multi-layer screening and grading device comprises a screening box, the top of the screening box is communicated with a hopper, and a scattered screening mechanism is arranged in the screening box. When the chemical raw materials are added into the screening box through the hopper, the chemical raw materials can fall onto the carrying net in the disc frame, at the moment, the motor drives the shaft rod to drive the scattering rods to rotate, the chemical raw materials which are extruded and caked for a long time can be effectively scattered, large blocks are prevented from hindering a subsequent screening path, and the scattered chemical raw materials are prevented from falling downwards; and then the raw materials are subjected to multi-layer screening through the primary screening structure driven by the shaft rod, enter the material guiding opening and are discharged into the re-filtering structure to be treated again, so that normal screening of all stages of screens is ensured, the screening efficiency is remarkably improved, accurate grading of the chemical raw materials with different particle sizes is ensured, and the screening quality is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical raw material screening and processing, in particular to a multi-layer screening and grading device for chemical raw materials. Background Art

[0002] There are many types of chemical raw materials with a wide range of uses. The relationship between humans and chemical industry is very close, involving all aspects of life. Modern life is almost inseparable from chemical products. Chemical products are made from chemical raw materials. Chemical raw materials are screened by screening devices and then processed, especially for granular chemical raw materials.

[0003] The screening device is not convenient for classifying and screening chemical raw materials, and the screening of raw materials is not thorough, thus affecting the production of chemical products;

[0004] The existing patent (Announcement No.: CN213996631U) discloses a screening device for processing chemical raw materials. The utility model has a reasonable design structure, which is convenient for automatic classification and screening of chemical raw materials and thorough screening of raw materials.

[0005] In view of the above problems, existing patents have provided solutions. However, in the above patents, when chemical raw materials are graded and screened, they are not pre-dispersed, resulting in that some chemical raw materials that have been extruded and agglomerated for a long time cannot be effectively dispersed when entering the screening process. Large agglomerates cannot pass through the screen, causing them to accumulate on a certain level of the screen, hindering the screening path of subsequent raw materials, and blocking some raw materials that should be screened to other levels, reducing the screening efficiency. At the same time, when the chemical raw materials are not dry enough, chemical raw materials with higher humidity are easy to adhere to the surface of the screen, blocking the screen holes, reducing the effective screening area of ​​the screen, resulting in a decrease in the raw material pass rate, affecting the screening efficiency and quality.

[0006] Therefore, a multi-layer screening and grading device for chemical raw materials is proposed. Utility Model Content

[0007] The utility model aims to provide a multi-layer screening and grading device for chemical raw materials, which can solve the problem in the above patent that when the chemical raw materials are graded and screened, the chemical raw materials are not pre-dispersed, resulting in that some chemical raw materials that have been extruded and agglomerated for a long time cannot be effectively dispersed when entering the screening process, and large agglomerates cannot pass through the screen, resulting in their accumulation on a certain level of the screen, hindering the screening path of subsequent raw materials, and blocking some raw materials that should be screened to other levels, thereby reducing the screening efficiency. At the same time, when the chemical raw materials are not dry enough, the chemical raw materials with higher humidity are easy to adhere to the surface of the screen, blocking the screen holes, reducing the effective screening area of ​​the screen, resulting in a decrease in the raw material pass rate, and affecting the screening efficiency and quality.

[0008] To achieve the above object, the utility model provides the following technical solutions: a multi-layer screening and grading device for chemical raw materials, comprising a screening box, the top of the screening box is connected to a hopper, a bulk screening mechanism is arranged inside the screening box, a drying component is arranged inside the bulk screening mechanism, a material guide port is opened at the top, middle and bottom of the right side of the screening box, and a re-filtering structure is arranged on the right side of the screening box;

[0009] The loose screening mechanism includes an inclined plate bolted to the bottom side of the screening box, a motor is bolted to the bottom of the inclined plate, a disk frame is bolted to the top side of the screening box, a loading net is provided on the bottom side of the disk frame, an axle rod is bolted to the output end of the motor, the top of the axle rod passes through the bottom of the loading net, a primary screening structure is provided on the outside of the axle rod, the outside of the primary screening structure is located on the inside of the material guide port, a breaking rod is bolted to the top of the outside of the axle rod, the breaking rod is located inside the disk frame, and the breaking rod is located on the top of the loading net.

[0010] Preferably, the drying assembly comprises an electric heating tube embedded in the carrier mesh, and the electric heating tube is located at the bottom of the breaking rod.

[0011] Preferably, a fixing plate is bolted to the front side of the screening box, a controller is bolted to the front side of the fixing plate, and the controller is electrically connected to the electric heating pipe.

[0012] Preferably, a temperature sensor is bolted to the front side of the disk frame, and the temperature sensor is electrically connected to the controller.

[0013] Preferably, the primary screening structure includes a first bucket-shaped screen bolted to the top of the outer side of the shaft, a second bucket-shaped screen bolted to the middle of the outer side of the shaft, and the outer sides of the second bucket-shaped screen and the first bucket-shaped screen are located on the inner side of the material guide port.

[0014] Preferably, a third bucket-shaped screen is bolted to the bottom of the outer side of the shaft rod, the third bucket-shaped screen is located at the bottom of the second bucket-shaped screen, and the outer side of the third bucket-shaped screen is located on the inner side of the material guide port.

[0015] Preferably, the re-filtration structure includes a grading frame fixedly connected to the right side of the screening box, and the top, middle and bottom of the grading frame are bolted with coarse oblique nets, medium oblique nets and fine oblique nets respectively, and the coarse oblique nets, medium oblique nets and fine oblique nets are all located at the bottom outside the material guide port.

[0016] Preferably, the top, middle and bottom of the right side of the grading frame are all connected with discharge valves, and the discharge valves at the top, middle and bottom are respectively located on the right sides of the coarse inclined net, the medium inclined net and the fine inclined net.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. This application sets a loose screening mechanism. When the chemical raw materials are added into the screening box through the hopper, they will fall onto the loading net inside the disc frame. At this time, the motor drives the shaft rod to drive the breaking rod to rotate, which can effectively break up the chemical raw materials that have been squeezed and agglomerated for a long time, and avoid large agglomerates blocking the subsequent screening path. The chemical raw materials after being broken up fall down, and then pass through the primary screening structure driven by the shaft rod for multi-layer screening, and then enter the material guide port, and are discharged to the inside of the re-filtering structure for further processing, so as to ensure the normal screening of each level of the screen, significantly improve the screening efficiency, ensure the accurate classification of chemical raw materials with different particle sizes, and optimize the screening quality;

[0019] 2. This application sets a drying component to heat and dry the chemical raw materials that have been broken up and passed through the carrier mesh, so as to reduce the humidity of the chemical raw materials, prevent blockage in the subsequent screening process, and increase the pass rate of the chemical raw materials, effectively ensuring the efficient and stable implementation of the screening work and improving the overall screening efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structure diagram of the multi-layer screening and grading device for chemical raw materials of the utility model;

[0021] Figure 2 This is a planar structural diagram of the screening box of the utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the screening box of the utility model;

[0023] Figure 4 This is a structural diagram of the bulk screening mechanism of the utility model;

[0024] Figure 5 This is a structural diagram of the drying component of the utility model;

[0025] Figure 6 This is a structural diagram of the primary screening structure of the utility model;

[0026] Figure 7 It is the structural diagram of the re-filtration structure of the utility model.

[0027] In the figure, 1. screening box; 2. hopper; 3. bulk screening mechanism; 301. inclined plate; 302. motor; 303. disc frame; 304. carrier net; 305. shaft rod; 306. primary screening structure; 3061. first bucket-shaped screen; 3062. second bucket-shaped screen; 3063. third bucket-shaped screen; 307. bulking rod; 4. drying component; 401. electric heating tube; 402. fixing plate; 403. controller; 404. temperature sensor; 5. material guide port; 6. re-filtration structure; 601. grading frame; 602. coarse inclined net; 603. medium inclined net; 604. fine inclined net; 605. discharge valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-7 , the utility model provides a technical solution:

[0030] A multi-layer screening and grading device for chemical raw materials comprises a screening box 1, the top of the screening box 1 is connected to a hopper 2, a bulk screening mechanism 3 is arranged inside the screening box 1, a drying component 4 is arranged inside the bulk screening mechanism 3, a material guide port 5 is opened at the top, middle and bottom of the right side of the screening box 1, and a re-filtering structure 6 is arranged on the right side of the screening box 1;

[0031] The loose screening mechanism 3 includes an inclined plate 301 bolted to the bottom side of the screening box 1, a motor 302 is bolted to the bottom of the inclined plate 301, a disk frame 303 is bolted to the top side of the screening box 1, a carrier net 304 is arranged on the bottom side of the disk frame 303, an output end of the motor 302 is bolted to a shaft rod 305, the top of the shaft rod 305 passes through the bottom of the carrier net 304, a primary screening structure 306 is arranged on the outside of the shaft rod 305, the outside of the primary screening structure 306 is located on the inside of the material guide port 5, a breaking rod 307 is bolted to the top of the outside of the shaft rod 305, the breaking rod 307 is located inside the disk frame 303, and the breaking rod 307 is located on the top of the carrier net 304.

[0032] In this embodiment, by setting the sieving mechanism 3, the drying assembly 4 and the re-filtering structure 6, after the chemical raw materials enter the screening box 1 from the hopper 2, they first fall on the carrier net 304 in the disc frame 303. At this time, the motor 302 located at the bottom of the inclined plate 301 is started, driving the shaft 305 to rotate, and the breaking rod 307 at the top of the shaft 305 rotates at a high speed, exerting a strong mechanical effect on the chemical raw materials on the carrier net 304. Under the synergistic effect of the impact, stirring and friction of the breaking rod 307, the agglomerated raw materials are quickly disintegrated into small particles or monomer forms, effectively overcoming the agglomeration problem and laying the foundation for accurate screening. The broken raw materials pass through the carrier net 30 4 falls, during which the shaft 305 drives the primary screening structure 306 to operate synchronously. The primary screening structure 306 uses a multi-layer design with different apertures to grade and screen the raw materials according to their particle sizes. After passing through the primary screening structure 306, the raw materials enter the corresponding material guide port 5 and then enter the re-filtering structure 6 for processing. During this process, the drying component 4 continuously heats and dries the chemical raw materials passing through the carrier mesh 304, accurately controls the humidity of the chemical raw materials, and after the water evaporates due to heat, the adhesion of the chemical raw materials is significantly reduced, ensuring that the chemical raw materials are screened unimpeded, thereby ensuring a stable and efficient screening process, fundamentally improving the overall screening efficiency and optimizing product quality.

[0033] Specifically, Figure 5 As shown, the drying component 4 includes an electric heating tube 401 embedded in the carrier mesh 304 , and the electric heating tube 401 is located at the bottom of the breaking rod 307 .

[0034] Specifically, Figure 5 As shown, a fixing plate 402 is bolted to the front side of the screening box 1 , a controller 403 is bolted to the front side of the fixing plate 402 , and the controller 403 is electrically connected to the electric heating tube 401 .

[0035] Specifically, Figure 5 As shown, a temperature sensor 404 is bolted to the front side of the disk frame 303 , and the temperature sensor 404 is electrically connected to the controller 403 .

[0036] In this embodiment: by setting up a drying component 4, the electric heating tube 401 is embedded in the carrier mesh 304 and is located at the bottom of the breaking rod 307. When the chemical raw materials pass through the carrier mesh 304 after being broken up, the electric heating tube 401 accurately generates heat under the intelligent control of the controller 403, thereby realizing heating and drying treatment of the chemical raw materials passing through the carrier mesh 304. During this process, the temperature sensor 404 monitors and feedbacks in real time, and cooperates with the controller 403 to form a closed-loop temperature control. Accurate temperature control avoids excessive heating to damage the quality of the raw materials or waste of energy, ensures that the chemical raw materials are heated evenly and moderately, stably maintains the ideal dryness, and improves the processing suitability of the raw materials. At the same time, efficient drying reduces the humidity dependence of the chemical raw materials and ensures a stable screening rhythm.

[0037] Specifically, Figure 6 As shown, the primary screening structure 306 includes a first bucket-shaped screen 3061 bolted to the top of the outer side of the shaft 305, a second bucket-shaped screen 3062 bolted to the middle of the outer side of the shaft 305, and the outer sides of the second bucket-shaped screen 3062 and the first bucket-shaped screen 3061 are located on the inner side of the material guide port 5.

[0038] Specifically, Figure 6 As shown, a third bucket-shaped screen 3063 is bolted to the bottom of the outer side of the shaft rod 305 , the third bucket-shaped screen 3063 is located at the bottom of the second bucket-shaped screen 3062 , and the outer side of the third bucket-shaped screen 3063 is located on the inner side of the material guide port 5 .

[0039] In this embodiment: by setting up the primary screening structure 306, the chemical raw materials fall from the carrying net 304 and first touch the first bucket-shaped screen 3061, the large-size raw materials are immediately intercepted, and the small and medium-size particles penetrate to the next level. Under the coordination of centrifugal force and gravity, the second bucket-shaped screen 3062 and the second bucket-shaped screen 3062 relay screening to continuously refine the particle size classification. In this way, the multiple layers of screens cooperate to construct a fine screening gradient, and efficiently separate raw materials of different particle sizes to the corresponding levels, which greatly improves the screening accuracy and efficiency. Then, the chemical raw materials after the layered screening are transported to the subsequent stage through the material guide port 5 at different layer heights.

[0040] Specifically, Figure 7 As shown, the re-filtration structure 6 includes a grading frame 601 fixedly connected to the right side of the screening box 1, and the top, middle and bottom of the grading frame 601 are bolted with a coarse oblique net 602, a medium oblique net 603 and a fine oblique net 604 respectively, and the coarse oblique net 602, the medium oblique net 603 and the fine oblique net 604 are all located at the bottom outside the material guide port 5.

[0041] Specifically, Figure 7 As shown, the top, middle and bottom of the right side of the grading frame 601 are connected with discharge valves 605, and the discharge valves 605 at the top, middle and bottom are respectively located on the right side of the coarse inclined net 602, the medium inclined net 603 and the fine inclined net 604.

[0042] In this embodiment: by setting up a re-filtration structure 6, the chemical raw materials are led out from the material guide port 5 at different levels of the screening box 1 and enter the grading frame 601. The coarse inclined net 602, the medium inclined net 603 and the fine inclined net 604 in the grading frame 601 filter the chemical raw materials again to achieve micro-level purification of the chemical raw materials, and finally they are discharged through the discharge valves 605 at different levels.

[0043] Working principle: During the operation of the multi-layer screening and grading device for chemical raw materials, the chemical raw materials enter the screening box 1 from the hopper 2 and fall on the carrier net 304 in the disc frame 303. The motor 302 at the bottom of the inclined plate 301 starts to drive the shaft 305 to rotate, and the breaking rod 307 at the top of the shaft 305 rotates at a high speed. Its strong mechanical force causes the agglomerated chemical raw materials to disintegrate into small particles or monomers under the action of impact, stirring and friction, creating conditions for accurate screening. The broken chemical raw materials pass through the carrier net 304 and fall. The shaft 305 drives the primary screening structure 306 to operate. First, the large-size raw materials are intercepted by the first bucket-shaped screen 3061 of the primary screening structure 306, and the small and medium-size particles penetrate into the second bucket-shaped screen 3062. With the help of centrifugal force and gravity, the third bucket-shaped screen 3063 relays the screening to construct a fine screening gradient, and the chemical raw materials are separated according to the particle size. It is accurately sorted into corresponding levels and sent into the grading frame 601 through the material guide port 5. While the chemical raw materials pass through the carrier mesh 304, the electric heating tube 401 heats the chemical raw materials passing through it in the carrier mesh 304, and accurately heats under the closed-loop temperature control of its controller 403 and temperature sensor 404 to avoid raw material damage and energy waste, ensure uniform and appropriate heating, stabilize dryness to improve processing suitability, reduce humidity dependence, and maintain a stable screening rhythm. After the chemical raw materials enter the grading frame 601 through the material guide port 5, the coarse inclined mesh 602, the medium inclined mesh 603 and the fine inclined mesh 604 filter out tiny impurities to achieve purification at the microscopic level. Finally, the discharge valves 605 at different layer heights on the right side of the grading frame 601 discharge materials according to demand, completing efficient and accurate multi-layer screening and grading of chemical raw materials, and improving the overall screening efficiency and product quality.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-layer screening and grading device for chemical raw materials, comprising a screening box (1), characterized in that: The top of the screening box (1) is connected to a hopper (2), a bulk screening mechanism (3) is provided inside the screening box (1), a drying assembly (4) is provided inside the bulk screening mechanism (3), a material guide opening (5) is provided at the top, middle and bottom of the right side of the screening box (1), and a re-filtering structure (6) is provided on the right side of the screening box (1); The bulk screening mechanism (3) comprises an inclined plate (301) bolted to the bottom side of the screening box (1); a motor (302) is bolted to the bottom of the inclined plate (301); a disk frame (303) is bolted to the top side of the screening box (1); a carrier net (304) is arranged on the bottom side of the disk frame (303); an output end of the motor (302) is bolted to a shaft rod (305); the top of the shaft rod (305) passes through the bottom of the carrier net (304); a primary screening structure (306) is arranged on the outside of the shaft rod (305); the outside of the primary screening structure (306) is located on the inside of the material guide port (5); a scattering rod (307) is bolted to the top of the outside of the shaft rod (305); the scattering rod (307) is located inside the disk frame (303); and the scattering rod (307) is located on the top of the carrier net (304).

2. A multi-layer screening and grading device for chemical raw materials according to claim 1, characterized in that: The drying component (4) comprises an electric heating tube (401) embedded in the carrier net (304), and the electric heating tube (401) is located at the bottom of the beating rod (307).

3. A multi-layer screening and grading device for chemical raw materials according to claim 2, characterized in that: A fixing plate (402) is bolted to the front side of the screening box (1), a controller (403) is bolted to the front side of the fixing plate (402), and the controller (403) is electrically connected to the electric heating pipe (401).

4. A multi-layer screening and grading device for chemical raw materials according to claim 3, characterized in that: A temperature sensor (404) is bolted to the front side of the disk frame (303), and the temperature sensor (404) is electrically connected to the controller (403).

5. A multi-layer screening and grading device for chemical raw materials according to claim 1, characterized in that: The primary screening structure (306) comprises a first bucket-shaped screen (3061) bolted to the top of the outer side of the shaft (305), a second bucket-shaped screen (3062) bolted to the middle of the outer side of the shaft (305), and the outer sides of the second bucket-shaped screen (3062) and the first bucket-shaped screen (3061) are located on the inner side of the material guide port (5).

6. A multi-layer screening and grading device for chemical raw materials according to claim 5, characterized in that: A third bucket-shaped screen (3063) is bolted to the bottom of the outer side of the shaft rod (305), the third bucket-shaped screen (3063) is located at the bottom of the second bucket-shaped screen (3062), and the outer side of the third bucket-shaped screen (3063) is located on the inner side of the material guide port (5).

7. A multi-layer screening and grading device for chemical raw materials according to claim 1, characterized in that: The re-filtration structure (6) comprises a grading frame (601) fixedly connected to the right side of the screening box (1), and a coarse oblique net (602), a medium oblique net (603) and a fine oblique net (604) are bolted to the top, middle and bottom of the grading frame (601), respectively, and the coarse oblique net (602), the medium oblique net (603) and the fine oblique net (604) are all located at the bottom outside the material guide port (5).

8. A multi-layer screening and grading device for chemical raw materials according to claim 7, characterized in that: The top, middle and bottom of the right side of the grading frame (601) are all connected to discharge valves (605), and the top, middle and bottom discharge valves (605) are respectively located on the right side of the coarse inclined net (602), the medium inclined net (603) and the fine inclined net (604).

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