A sieve device with recyclable sieves

Abstract

The utility model discloses a screening device of recyclable screening, including screening box and fixed mounting on the lower outlet cylinder of screening box upper end, still include screening subassembly and spiral elevating module, screening subassembly includes screen cloth one and screen cloth two, and spiral elevating module is by the material conveying pipeline and electric spiral propelling rod and is composed, is used for conveying material from below to above, and pneumatic module is by compressed air power source and control box and is composed, and one side fixed mounting of screening box is equipped with vibration module, and vibration module is by vibration motor and drive link and is composed, when this screening device works, adopts conical design, and conical is favorable to material dispersion by gravity, and this design has increased screening area, and has guided material flow direction, relative to traditional vibrating screen, and the filtering path of material on screen cloth one is longer, and the residence time is longer, and material passes through spiral elevating module and completes a cycle, and the contact probability and time of greatly improved with screen cloth.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a screening device capable of cyclic screening. Background Technology

[0002] Screening is an indispensable unit operation in many industrial fields such as mining, building materials, chemicals, food, medicine, and agriculture. Its purpose is to separate materials according to their particle size in order to obtain finished products that meet specific particle size requirements or to prepare for the next process.

[0003] In existing technologies, commonly used circular vibrating screens and linear screens are prone to clogging of the screen mesh when handling wet, sticky, or fibrous materials. This leads to a sharp drop in screening efficiency, requiring frequent shutdowns for cleaning. Furthermore, the material has a short residence time on the screen surface, and some particles close to the screen mesh size and fine particles may not pass through the screen before being discharged with the coarse material. Traditional vibrating screens typically perform only one screening operation, leaving no opportunity for secondary screening. This limits their capacity to handle difficult-to-screen materials. Therefore, it is necessary to design a cyclic screening device that allows unscreened materials to return to the screening area again or multiple times, significantly improving screening efficiency and accuracy by increasing the probability and time of contact with the screen mesh. Utility Model Content

[0004] The purpose of this invention is to provide a cyclic screening device to solve the problems mentioned in the background art, such as the short residence time of materials on the screen surface of commonly used circular vibrating screens and linear screens, which usually only perform screening once and do not provide a second screening opportunity, thus limiting the processing capacity of difficult-to-screen materials.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cyclic screening device, comprising a screening box and a feeding cylinder fixedly installed on the upper end of the screening box, and further comprising a screening component and a spiral lifting module. The screening component includes a screen one and a screen two. Screen one is fixedly installed in the screening box, and screen two is installed on the bottom periphery of screen one. Screen one is generally a cone with a hollow bottom, and screen two is generally annular. Screen one is used to extend the residence path. The spiral lifting module is installed on one side of the screening box. The spiral lifting module consists of a conveying pipe and an electric spiral propulsion rod, and is used to convey materials from bottom to top. A pneumatic module is fixedly installed on one side of the screening box. The pneumatic module consists of a compressed air power source and a control box. A vibration module is fixedly installed on one side of the screening box. The vibration module consists of a vibration motor and a transmission rod.

[0006] Based on the preferred embodiment of this technical solution, a discharge bin is fixedly installed at the lower end of the second screen, and a conveying bin is fixedly installed at the lower end of the discharge bin. One end of the conveying bin is connected to the feed end of the spiral lifting module, and the other end of the conveying bin is fixedly installed with an air nozzle. The air nozzle is connected to the output end of the pneumatic module through a hose.

[0007] Based on the preferred embodiment of this technical solution, the material conveying hopper is equipped with multiple air ducts, and the air nozzle is integrated with multiple air outlets, with each air outlet corresponding to one of the air ducts.

[0008] Based on the preferred embodiment of this technical solution, a baffle plate is fixedly installed at the upper end of the second screen, the discharge port of the spiral lifting module is set through the baffle plate, and an air nozzle is fixedly installed on the surface of the conveying pipe of the spiral lifting module. The air nozzle is connected to the output end of the pneumatic module through a hose.

[0009] Based on the preferred embodiment of this technical solution, the discharge port of the spiral lifting module is positioned directly opposite the lower end of the feeding cylinder. When the feeding cylinder discharges material, the airflow blown out by the three air nozzles will pass through the lower end of the feeding cylinder.

[0010] Based on the preferred embodiment of this technical solution, an air nozzle two is fixedly installed on the surface of the conveying pipe of the spiral lifting module. The air nozzle two is connected to the output end of the pneumatic module through a hose. A detachable filter screen is fixedly installed on the surface of the conveying pipe of the spiral lifting module. The detachable filter screen is used to filter out the material.

[0011] In this preferred embodiment of the technical solution, the second air nozzle is positioned directly opposite the detachable filter screen. A filter bag interface is fixedly installed on the outer shell of the detachable filter screen, and the filter bag is used to filter out dust from the material. Compared with the prior art, the beneficial effects of this utility model are: 1. When the screening device is working, the screening components are used for the main screening work. The first screen is a hollow cone shape. The cone shape facilitates the dispersion of materials by gravity. This design increases the screening area and guides the material flow. Compared with the traditional vibrating screen, the material has a longer filtration path and a longer residence time on the first screen, which enhances the screening efficiency and effect. The second screen has the same filtration performance as the first screen. After filtration, the material will fall into the discharge bin.

[0012] 2. After the material falls into the discharge hopper, it gathers towards the center and enters the conveying hopper. Then, driven by the compressed gas output from nozzle one, it enters the spiral lifting module. When it reaches the top, the compressed gas output from nozzle three pushes the material into the baffle plate. Then the screening component continues to complete the screening operation, thus completing a cycle. This greatly increases the probability and time of contact with the screen. The circulating airflow can penetrate the screen and blow away the particles stuck in the screen holes, realizing online and uninterrupted screen cleaning. Attached Figure Description

[0013] Figure 1This is a schematic diagram of one embodiment of the cyclic screening device of this utility model; Figure 2 This is a schematic diagram of the distribution structure of the spiral lifting module of this utility model; Figure 3 This is a schematic diagram of the connection structure between the detachable filter screen and the filter bag of this utility model; Figure 4 This is a cross-sectional view of the distribution structure of the discharge bin and baffle plate of this utility model; Figure 5 This is a schematic diagram of the distribution structure of screen one and screen two of this utility model; Figure 6 This is a schematic diagram of the cyclic process structure of this utility model.

[0014] In the diagram: 1. Screening box; 2. Feeding cylinder; 3. Screen 1; 4. Screen 2; 5. Discharge bin; 6. Conveying bin; 7. Screw lifting module; 8. Baffle plate; 9. Air nozzle 1; 10. Air nozzle 2; 11. Detachable filter screen; 12. Filter bag interface; 13. Air nozzle 3; 14. Vibration module; 15. Pneumatic module. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6This utility model provides an embodiment of a recyclable screening device, including a screening box 1 and a feed cylinder 2 fixedly installed on the upper end of the screening box 1, as well as a screening assembly and a spiral lifting module 7. The screening assembly includes a first screen 3 and a second screen 4. The first screen 3 is fixedly installed in the screening box 1, and the second screen 4 is installed on the bottom periphery of the first screen 3. The first screen 3 is generally a hollow cone shape, and the second screen 4 is generally annular. The first screen 3 is used to extend the residence path. The spiral lifting module 7 is installed on one side of the screening box 1. The spiral lifting module 7 consists of a conveying pipe and an electric spiral propulsion rod, used for bottom-to-top conveying. The material is conveyed by a pneumatic module 15 fixedly installed on one side of the screening box 1. The pneumatic module 15 consists of a compressed air power source and a control box. A vibration module 14 is fixedly installed on one side of the screening box 1. The vibration module 14 consists of a vibration motor and a transmission rod. When the screening device is working, it adopts a conical design. The conical shape is conducive to the dispersion of materials by gravity. This design increases the screening area and guides the flow of materials. Compared with the traditional vibrating screen, the material has a longer filtration path and a longer residence time on the screen 3. The material completes a cycle through the spiral lifting module 7, which greatly improves the probability and time of contact with the screen.

[0017] Please see Figure 5 and Figure 6 A further solution based on this embodiment is as follows: a discharge bin 5 is fixedly installed at the lower end of the screen 2 4, and a conveying bin 6 is fixedly installed at the lower end of the discharge bin 5. One end of the conveying bin 6 is connected to the feed end of the spiral lifting module 7, and the other end of the conveying bin 6 is fixedly installed with an air nozzle 1 9. The air nozzle 1 9 is connected to the output end of the pneumatic module 15 through a hose. After the material falls into the discharge bin 5, the material gathers towards the center and enters the conveying bin 6. Then, under the push of the compressed gas output by the air nozzle 1 9, it enters the spiral lifting module 7.

[0018] Please see Figure 5 and Figure 6 A further solution based on this embodiment is as follows: the material conveying bin 6 is provided with multiple air ducts, and the air nozzle 9 is integrated with multiple air outlets. The air outlets correspond one-to-one with the air ducts. The air ducts can disperse the materials, prevent the materials from accumulating excessively and causing congestion, facilitate the rapid movement of materials, and make the circulation smoother.

[0019] Please see Figure 4 A further solution based on this embodiment is as follows: a baffle plate 8 is fixedly installed on the upper end of the screen 2 4, the discharge port of the spiral lifting module 7 is set through the baffle plate 8, and an air nozzle 3 13 is fixedly installed on the surface of the conveying pipe of the spiral lifting module 7. The air nozzle 3 13 is connected to the output end of the pneumatic module 15 through a hose. When it reaches the top, the compressed gas output by the air nozzle 3 13 pushes the material into the baffle plate 8, and then the screening component continues to complete the screening operation, thus completing one cycle.

[0020] Please see Figure 5 A further solution based on this embodiment is as follows: the discharge port of the spiral lifting module 7 is set directly opposite the lower end of the feeding cylinder 2. When the feeding cylinder 2 discharges material, the airflow blown out by the air nozzle 3 13 will pass through the lower end of the feeding cylinder 2. The air nozzle 3 13 can not only discharge the conveyed material, but also the airflow blown out will pass through the lower end of the feeding cylinder 2, so that the material is dispersed in the air. Then, under the dispersion of the screen 3, the material can fully contact the filter surface, which indirectly improves the filtering and screening effect.

[0021] Please see Figure 2 and Figure 3 A further solution based on this embodiment is as follows: an air nozzle 2 10 is fixedly installed on the surface of the conveying pipe of the spiral lifting module 7. The air nozzle 2 10 is connected to the output end of the pneumatic module 15 through a hose. A detachable filter screen 11 is fixedly installed on the surface of the conveying pipe of the spiral lifting module 7. The detachable filter screen 11 is used to filter out the material. The air nozzle 2 10 removes lighter dust from the material by outputting compressed gas, and the detachable filter screen 11 leaves the material.

[0022] Please see Figure 3 A further solution based on this embodiment is as follows: the second air nozzle 10 is positioned directly opposite the detachable filter screen 11, and a filter bag interface 12 is fixedly installed on the outer shell of the detachable filter screen 11. The filter bag is used to filter out dust in the material, thus achieving a self-cleaning effect.

[0023] Working principle: When the screening device is working, the screening component is used for the main screening work. Screen 3 is a hollow cone shape. The cone shape facilitates the dispersion of materials by gravity. This design increases the screening area and guides the material flow. Compared with the traditional vibrating screen, the material has a longer filtration path and a longer residence time on screen 3. With the cooperation of the vibration module 14, this enhances the screening efficiency and effect. Screen 4 has the same filtration performance as screen 3. After filtration, the material will fall into the discharge bin 5.

[0024] After the material falls into the discharge bin 5, it gathers towards the center and enters the conveying bin 6. The conveying bin 6 is equipped with multiple air ducts, which can disperse the material and facilitate its rapid movement. Then, driven by the compressed gas output from the air nozzle 9, it enters the spiral lifting module 7. The spiral lifting module 7 conveys the material from bottom to top through an electric spiral pusher. When it reaches the top, the compressed gas output from the air nozzle 13 pushes the material into the baffle plate 8. Then the screening component continues to complete the screening operation, thus completing one cycle. The circulating airflow can penetrate the screen and blow away the particles stuck in the screen holes, realizing online and uninterrupted screen cleaning.

[0025] Air nozzle 313 is positioned directly opposite the lower end of the feeding cylinder 2. Air nozzle 313 can not only discharge the conveyed material, but the airflow blown out will also pass through the lower end of the feeding cylinder 2, causing the material to disperse in the air. Then, under the dispersion of screen 3, the material can fully contact the filter surface, indirectly improving the filtration and screening effect.

[0026] During the material transport process, the spiral lifting module 7 uses the compressed gas output by the air nozzle 10 to remove lighter dust particles from the material, while the detachable filter 11 retains the material and the dust is intercepted by the filter bag, thus achieving a self-cleaning effect.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cyclic screening device, comprising a screening box (1) and a feed cylinder (2) fixedly installed on the upper end of the screening box (1), characterized in that: It also includes a screening component and a spiral lifting module (7). The screening component includes screen one (3) and screen two (4). Screen one (3) is fixedly installed in the screening box (1). Screen two (4) is installed on the bottom periphery of screen one (3). Screen one (3) is a cone with a hollow bottom. Screen two (4) is annular. Screen one (3) is used to extend the residence path. The spiral lifting module (7) is installed on one side of the screening box (1). The spiral lifting module (7) consists of a conveying pipe and an electric spiral push rod, and is used to convey materials from bottom to top. A pneumatic module (15) is fixedly installed on one side of the screening box (1). The pneumatic module (15) consists of a compressed air power source and a control box. A vibration module (14) is fixedly installed on one side of the screening box (1). The vibration module (14) consists of a vibration motor and a transmission rod.

2. The cyclic screening device according to claim 1, characterized in that: The lower end of the screen (4) is fixedly installed with a discharge bin (5), and the lower end of the discharge bin (5) is fixedly installed with a conveying bin (6). One end of the conveying bin (6) is connected to the feed end of the spiral lifting module (7), and the other end of the conveying bin (6) is fixedly installed with an air nozzle (9). The air nozzle (9) is connected to the output end of the pneumatic module (15) through a hose.

3. The cyclic screening device according to claim 2, characterized in that: The material conveying hopper (6) is equipped with multiple air ducts, and the air nozzle (9) is integrated with multiple air outlets, with each air outlet corresponding to one of the air ducts.

4. The cyclic screening device according to claim 3, characterized in that: A baffle plate (8) is fixedly installed at the upper end of the screen (4). The discharge port of the spiral lifting module (7) is set through the baffle plate (8). An air nozzle (13) is fixedly installed on the surface of the conveying pipe of the spiral lifting module (7). The air nozzle (13) is connected to the output end of the pneumatic module (15) through a hose.

5. The cyclic screening device according to claim 4, characterized in that: The discharge port of the spiral lifting module (7) is set directly opposite the lower end of the feeding cylinder (2). When the feeding cylinder (2) discharges material, the airflow blown out by the air nozzle three (13) will pass through the lower end of the feeding cylinder (2).

6. The cyclic screening device according to claim 5, characterized in that: The surface of the conveying pipe of the spiral lifting module (7) is fixedly installed with an air nozzle (10), which is connected to the output end of the pneumatic module (15) through a hose. The surface of the conveying pipe of the spiral lifting module (7) is fixedly installed with a detachable filter screen (11), which is used to filter out materials.

7. The cyclic screening device according to claim 6, characterized in that: Air nozzle 2 (10) is positioned directly opposite the detachable filter screen (11). The detachable filter screen (11) has a filter bag interface (12) fixedly installed on its outer shell. The filter bag is used to filter out dust from the material.

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