Granular material multi-stage screening device

Abstract

The utility model discloses a granular material multistage screening device which comprises a control base, a vibrating screening motor is installed in the control base, and the output end of the vibrating screening motor is fixedly connected with a vibrating machine head through a transmission shaft. A first screening box, a second screening box, a third screening box and a fourth screening box are sequentially arranged between the second limiting clamping plate and the first limiting clamping plate from top to bottom, a first screening net is installed in the first screening box, and a second screening net is installed in the second screening box; a third screening net is installed in the third screening box, a fourth screening net is installed in the fourth screening box, and a material containing machine box is installed below the fourth screening box. The screening machine box is conveniently assembled, limited and fixed, the screening net structures with different groove hole sizes are arranged from top to bottom, multi-stage layer-by-layer screening operation can be conveniently carried out on particles, and therefore the particles with different particle sizes can be collected.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a multi-stage screening device for granular materials. Background Technique

[0002] The multi-stage screening device is a commonly used device in the field of material screening, and its function is to separate the mixed materials with different particle sizes according to the particle size, and carry out subsequent processing operations.

[0003] The Chinese authorized patent document with the publication number of CN218460147U provides a multi-stage screening device, including: a machine shell, an installation space is provided inside the machine shell, a feeding port, a first discharge port and a second discharge port located below the first discharge port are arranged on the machine shell; a primary screening structure, the primary screening structure is a roller screen, the roller screen is arranged in the installation space, the feeding end of the roller screen is located below the feeding port, and the discharging end of the roller screen is communicated with the first discharge port; a secondary screening structure, which is arranged in the installation space and below the roller screen to receive the materials separated and falling by the roller screen, and the discharging end of the secondary screening structure is communicated with the second discharge port. Applying the technical solution of the utility model can effectively solve the problems of narrow particle size range of materials that can be screened and small processing capacity in the multi-stage screening device in the related art.

[0004] In the above-mentioned prior art, the screening structure cannot be assembled, limited and fixed conveniently and quickly, the installation cost is relatively high and the operation is relatively cumbersome. Therefore, it is necessary to develop a new type of multi-stage screening device for granular materials to solve the above existing technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage screening device for granular materials to solve the problem that the screening structure in the prior art cannot be assembled, limited and fixed conveniently and quickly, the installation cost is relatively high and the operation is relatively cumbersome as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a multi-stage screening device for granular materials, including a control base, a vibration screening motor is installed inside the control base, the output end of the vibration screening motor is fixedly connected with a vibration head through a transmission shaft, a first limit clamping plate is installed at the upper end of the vibration head, both ends of the first limit clamping plate are fixedly connected with a second limit clamping plate through limit shaft rods, a first screening box, a second screening box, a third screening box and a fourth screening box are sequentially arranged from top to bottom between the second limit clamping plate and the first limit clamping plate, a first screening mesh is installed inside the first screening box, a second screening mesh is installed inside the second screening box, a third screening mesh is installed inside the third screening box, a fourth screening mesh is installed inside the fourth screening box, and a material receiving machine box is installed below the fourth screening box.

[0007] Preferably, fixed blocks are provided at both ends of the first limiting clamping plate and the second limiting clamping plate, and shaft holes are provided on the surfaces of the fixed blocks, and the shaft holes are correspondingly connected to the limiting shaft rods.

[0008] Preferably, limiting bolts are provided on the side surfaces of the fixed blocks at both ends of the second limiting clamping plate, and the limiting bolts pass through the slot holes on the side surfaces of the fixed blocks and are tightly fitted and fixed to the limiting shaft rods.

[0009] Preferably, a spring assembly is installed between the first limiting clamping plate and the control base, and a total of four spring assemblies are provided.

[0010] Preferably, the diameter of the slot holes on the surface of the first screening mesh is larger than the diameter of the slot holes on the surface of the second screening mesh, the diameter of the slot holes on the surface of the second screening mesh is larger than the diameter of the slot holes on the surface of the third screening mesh, and the diameter of the slot holes on the surface of the third screening mesh is larger than the diameter of the slot holes on the surface of the fourth screening mesh.

[0011] Preferably, a control panel is provided on the front surface of the control base, and the control panel is electrically connected to the vibration screening motor.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model conducts portable assembly and limit fixation on the screening machine box. By providing an upper and a lower limiting clamping plate structure, and then cooperating with the limiting shaft rod, the limiting bolt and the fixed block, multiple screening boxes can be limited and installed and fixed. Inside the four screening boxes, screening mesh structures with different slot hole sizes are arranged from top to bottom, which is convenient for performing multi-level and layer-by-layer screening operations on granular materials, so as to quickly collect granular materials with different particle sizes. It has the advantages of convenient screening operation, convenient equipment assembly and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the side structure of the present utility model;

[0016] Figure 3 is an exploded view of the structure of the present utility model.

[0017] In the figure: 1. Second limiting clamping plate; 2. First screening box; 3. Second screening box; 4. Third screening box; 5. Fourth screening box; 6. Material receiving machine box; 7. Spring assembly; 8. Control panel; 9. Limiting bolt; 10. Limiting shaft rod; 11. First limiting clamping plate; 12. Vibration head; 13. Control base; 14. Vibration screening motor; 15. Transmission shaft; 16. Fixed block; 17. First screening mesh; 18. Second screening mesh; 19. Third screening mesh; 20. Fourth screening mesh. Detailed implementation mode

[0018] Next, in combination with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Please refer to Figures 1-3 , an embodiment provided by the present utility model: a multi-stage screening device for granular materials, including a control base 13, a vibration screening motor 14 is installed inside the control base 13, the output end of the vibration screening motor 14 is fixedly connected to a vibration head 12 through a transmission shaft 15, a first limit clamping plate 11 is installed at the upper end of the vibration head 12, both ends of the first limit clamping plate 11 are fixedly connected to a second limit clamping plate 1 through a limit shaft rod 10, a first screening box 2, a second screening box 3, a third screening box 4 and a fourth screening box 5 are sequentially arranged from top to bottom between the second limit clamping plate 1 and the first limit clamping plate 11, a first screening mesh 17 is installed inside the first screening box 2, a second screening mesh 18 is installed inside the second screening box 3, a third screening mesh 19 is installed inside the third screening box 4, a fourth screening mesh 20 is installed inside the fourth screening box 5, and a material receiving machine box 6 is installed below the fourth screening box 5.

[0020] Furthermore, fixed blocks 16 are arranged at both ends of the first limit clamping plate 11 and the second limit clamping plate 1, and a shaft hole is arranged on the surface of the fixed block 16, and the shaft hole is correspondingly connected to the limit shaft rod 10.

[0021] Furthermore, limit bolts 9 are arranged on the side surfaces of the fixed blocks 16 at both ends of the second limit clamping plate 1, and the limit bolts 9 pass through the slot holes on the side surface of the fixed block 16 and are tightly attached and fixed to the limit shaft rod 10.

[0022] Furthermore, a spring assembly 7 is installed between the first limit clamping plate 11 and the control base 13, and a total of four spring assemblies 7 are provided.

[0023] Furthermore, the diameter of the slot holes on the surface of the first screening mesh 17 is larger than the diameter of the slot holes on the surface of the second screening mesh 18, the diameter of the slot holes on the surface of the second screening mesh 18 is larger than the diameter of the slot holes on the surface of the third screening mesh 19, the diameter of the slot holes on the surface of the third screening mesh 19 is larger than the diameter of the slot holes on the surface of the fourth screening mesh 20. The first screening mesh 17 can perform preliminary screening on the granular materials. Under the action of the vibration motor, part of the granular materials that can pass through the first screening mesh 17 fall onto the surface of the second screening mesh 18. At this time, the granular materials remaining on the surface of the first screening mesh 17 are the largest granular materials. Similarly, the particle sizes of the granular materials remaining on the surfaces of the second screening mesh 18, the third screening mesh 19 and the fourth screening mesh 20 are getting smaller and smaller, and the smallest granular materials pass through the fourth screening mesh 20 and fall into the material receiving machine box 6.

[0024] Furthermore, a control panel 8 is provided on the front surface of the control base 13. The control panel 8 is electrically connected to the vibration screening motor 14, which is convenient for controlling the start and stop of the vibration screening motor 14.

[0025] Working principle: During use, the granular material to be sieved is poured into the first screening box 2. Subsequently, the second limit card 1 is hermetically fixed by the limit shaft rod 10 in cooperation with the limit bolt 9, and multiple screening boxes can be limited and installed and fixed, which has the advantage of convenient assembly and fixation. By turning on the vibration screening motor 14, the upper screening machine box is driven and controlled to perform vibration screening operations. A first screening mesh 17 is installed inside the first screening box 2, a second screening mesh 18 is installed inside the second screening box 3, a third screening mesh 19 is installed inside the third screening box 4, and a fourth screening mesh 20 is installed inside the fourth screening box 5. A material receiving machine box 6 is installed below the fourth screening box 5. The first screening mesh 17 can perform preliminary screening on the granular material. Under the action of the vibration motor, some granular materials that can pass through the first screening mesh 17 fall onto the surface of the second screening mesh 18. At this time, the granular materials remaining on the surface of the first screening mesh 17 are the largest granular materials. Similarly, the particle sizes of the granular materials remaining on the surfaces of the second screening mesh 18, the third screening mesh 19, and the fourth screening mesh 20 are getting smaller and smaller, and the smallest granular materials pass through the fourth screening mesh 20 and fall into the material receiving machine box 6.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art for connection. Moreover, the machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art. No specific description will be made here.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for granular materials, comprising a control base (13), characterized in that, Inside the control base (13), a vibration screening motor (14) is installed. The output end of the vibration screening motor (14) is fixedly connected to a vibration head (12) through a transmission shaft (15). A first limit clamping plate (11) is installed at the upper end of the vibration head (12). Both ends of the first limit clamping plate (11) are fixedly connected to a second limit clamping plate (1) through limit shaft rods (10). Between the second limit clamping plate (1) and the first limit clamping plate (11), a first screening box (2), a second screening box (3), a third screening box (4), and a fourth screening box (5) are arranged in sequence from top to bottom. Inside the first screening box (2), a first screening mesh (17) is installed. Inside the second screening box (3), a second screening mesh (18) is installed. Inside the third screening box (4), a third screening mesh (19) is installed. Inside the fourth screening box (5), a fourth screening mesh (20) is installed. Below the fourth screening box (5), a material receiving machine box (6) is installed.

2. The multi-stage screening device for granular materials according to claim 1, wherein: Fixed clamping blocks (16) are arranged at both ends of the first limit clamping plate (11) and the second limit clamping plate (1). A shaft hole is arranged on the surface of the fixed clamping block (16), and the shaft hole is correspondingly connected to the limit shaft rod (10).

3. The multi-stage screening device for granular materials according to claim 1, characterized in that: Limit bolts (9) are arranged on the side surfaces of the fixed clamping blocks (16) at both ends of the second limit clamping plate (1). The limit bolts (9) pass through the slot holes on the side surface of the fixed clamping block (16) and are tightly fitted and fixed to the limit shaft rod (10).

4. A multi-stage screening device for granular materials according to claim 1, characterized in that: A spring assembly (7) is installed between the first limit clamping plate (11) and the control base (13). A total of four spring assemblies (7) are provided.

5. A multi-stage screening device for granular materials according to claim 1, characterized in that: The diameter of the slot holes on the surface of the first screening mesh (17) is larger than the diameter of the slot holes on the surface of the second screening mesh (18). The diameter of the slot holes on the surface of the second screening mesh (18) is larger than the diameter of the slot holes on the surface of the third screening mesh (19). The diameter of the slot holes on the surface of the third screening mesh (19) is larger than the diameter of the slot holes on the surface of the fourth screening mesh (20).

6. The multi-stage screening device for granular materials according to claim 1, characterized in that: A control panel (8) is arranged on the front surface of the control base (13). The control panel (8) is electrically connected to the vibration screening motor (14).

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