A raw material grading screening device for suspension agent compounding

Abstract

This utility model relates to the technical field of grading and screening devices, and in particular to a grading and screening device for raw materials used in suspending agent compounding. It includes a base, a column fixedly installed at the upper end of the base, a first fixing block fixedly installed at the upper end of the column, a first connecting block at the front end of the first fixing block, and a rotating shaft at the rear end of the first connecting block. Addressing the core problem of the difficulty in dissociating agglomerated particles, when the raw material enters the device from the feed inlet, it first contacts a dispersing disc that rotates at high speed with the rotating shaft. The blades of the dispersing disc generate high-frequency stirring and shearing forces, quickly breaking down micro-agglomerates formed by electrostatic adsorption in the raw material, initially dispersing the raw material into finer particle clusters. Subsequently, the initially dispersed raw material is further processed by a spiral blade. The spiral blade not only guides the raw material evenly into the screen cylinder through propulsion, but its sharp teeth can also physically cut large agglomerates that are not completely dissociated.

Description

Technical Field

[0001] This utility model relates to the technical field of grading and screening devices, and in particular to a grading and screening device for raw materials used in suspending agent compounding. Background Technology

[0002] In the field of suspension compound manufacturing, the particle size distribution of raw materials is a key factor determining the core performance of the final product. The screening device needs to meet the requirements of simultaneous screening of multiple particle sizes, realize the separation of raw materials of different particle sizes in one step, and reduce the efficiency loss caused by multiple screenings. Considering that suspension raw materials are prone to agglomeration due to static electricity and humidity, and that some viscous components are prone to adhering to the surface of the screening structure, the device needs to have efficient agglomeration ability and anti-adhesion cleaning structure to avoid classification deviation caused by agglomerates or waste of raw materials caused by wall residue.

[0003] Traditional raw material classification and screening devices for compound suspension agents are designed to address the characteristic that suspension agent raw materials are prone to agglomeration due to static electricity and humidity. They lack an active dispersion structure, making it difficult for agglomerated particles to dissociate, forming large agglomerates that adhere to the inner wall of the screen cylinder and clog the screen cylinder.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN222287835U that discloses a grading and screening device. The patent states that it "adopts a multi-layered concentric screen cylinder with progressively smaller screen holes, and provides discharge ports at the interlayer ends of each screen cylinder, allowing for the acquisition of multiple product specifications in a single screening. This solves the problem that conventional grading and screening equipment requires multiple screenings to obtain different grades of products, making the entire process overly cumbersome." However, this device relies solely on the inertial force generated by the rotation of the screen cylinders to drive the raw material screening, lacks a real-time cleaning structure, and allows sticky raw materials to easily adhere and clog the screen cylinders, interrupting the screening process.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this invention is to provide a grading and screening device for raw materials used in the compounding of suspending agents, in order to solve the problem mentioned in the background art that traditional grading and screening devices for raw materials used in the compounding of suspending agents are prone to agglomeration due to static electricity and humidity, lack an active dispersion structure, and make it difficult for agglomerated particles to dissociate, forming large agglomerates that adhere to the inner wall of the sieve cylinder and block the sieve cylinder.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a raw material grading and screening device for suspending agent compounding, comprising a base, a column fixedly installed at the upper end of the base, a first fixing block fixedly installed at the upper end of the column, a first connecting block provided at the front end of the first fixing block, a rotating shaft provided at the rear end of the first connecting block, a rear end cover fitted around the outer ring of the rotating shaft, a screening inner cylinder fixedly installed at the front end of the rear end cover, a screening middle cylinder fixedly installed at the front end of the rear end cover, a screening outer cylinder fixedly installed at the front end of the rear end cover, a dispersing disc fitted around the outer ring of the rotating shaft, a spiral blade fitted around the outer ring of the rotating shaft, an anchor-type wall scraper fixedly installed at the front end of the rear end cover, brush bristles fixedly installed at both ends of the anchor-type wall scraper, and a front end cover provided at the front end of the screening outer cylinder.

[0008] Preferably, the outer ring of the screening outer cylinder is fitted with a sealing ring, and the screening outer cylinder is connected to the front end cover through the sealing ring.

[0009] Preferably, a reinforcing rib is fixedly installed at the front end of the front end cover, and a second connecting block is fixedly installed at the front end of the reinforcing rib.

[0010] Preferably, a sliding groove is fixedly installed on the upper end of the base, a hydraulic cylinder is provided on the upper end of the sliding groove, a second fixing block is fixedly installed on the upper end of the hydraulic cylinder, and a second connecting rod is fixedly installed through both ends of the second fixing block. The second fixing block and the second connecting block are connected by the second connecting rod, and the second connecting block and the second connecting rod form a rotating structure.

[0011] Preferably, the front end of the front end cover is provided with a feed port, and a first connecting rod is fixedly installed through both ends of the first fixing block. The first fixing block and the first connecting block are connected by the first connecting rod, and the first connecting block and the first connecting rod form a rotating structure.

[0012] Preferably, a middle cylinder discharge guide plate is fixedly installed at the rear end of the rear end cover, and a middle cylinder discharge baffle is provided at the upper end of the middle cylinder discharge guide plate. An inner cylinder discharge guide plate is fixedly installed at the rear end of the rear end cover, and an inner cylinder discharge baffle is provided at the upper end of the inner cylinder discharge guide plate.

[0013] Preferably, an mounting base is fixedly installed on the upper end of the base, a discharge inclined plate is fixedly installed on the upper end of the mounting base, a receiving box is provided at the lower end of the screening outer cylinder, a drive motor is provided at the rear end of the second connecting block, and the rotating shaft is connected to the output end of the drive motor through a coupling.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. Addressing the core pain point of difficulty in disintegrating agglomerated particles, when the raw material enters the device from the feed inlet, it first comes into contact with the dispersion disc that rotates at high speed with the rotating shaft. The blades of the dispersion disc can generate high-frequency stirring and shearing force, which can quickly break down the micro-agglomerates formed by electrostatic adsorption in the raw material, and initially disperse the raw material into finer particle clusters. Subsequently, the raw material that has been initially dispersed will be further processed by the spiral blade. The spiral blade can not only guide the raw material to be evenly conveyed into the screen cylinder through the propulsion force, but its sharp blade teeth can also physically cut the large agglomerates that have not been completely disintegrated, and completely break them into single particles or small particle clusters that meet the screening conditions.

[0015] 2. To prevent dispersed raw materials or small amounts of residual agglomerates from adhering to the inner wall of the screen cylinder and clogging the screen holes, an anchor-type wall scraper that rotates synchronously with the screen cylinder is fixedly installed at the front end of the rear cover. Flexible bristles are specially set at both ends of the wall scraper. The bristles at both ends can penetrate into the fine gaps at the edge of the screen holes to gently clean the fine particles that are about to clog the screen holes. This avoids damage to the screen holes caused by rigid cleaning and ensures that the screen holes remain unobstructed at all times. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model; Figure 2 This is a schematic diagram of the cooperation structure between the inner screening cylinder and the middle screening cylinder of this utility model; Figure 3 This is a schematic diagram of the cooperative structure of the slide and hydraulic cylinder of this utility model; Figure 4 This is a schematic diagram of the interaction between the inner cylinder discharge guide plate and the inner cylinder discharge baffle of this utility model.

[0017] In the diagram: 1. Base; 2. Column; 3. First fixing block; 4. First connecting block; 5. Rotating shaft; 6. Rear end cover; 7. Screening inner cylinder; 8. Screening middle cylinder; 9. Screening outer cylinder; 10. Dispersing disc; 11. Spiral blade; 12. Anchor-type scraper; 13. Brush bristles; 14. Sealing ring; 15. Front end cover; 16. Reinforcing rib; 17. Second connecting block; 18. Slide groove; 19. Hydraulic cylinder; 20. Second fixing block; 21. Second connecting rod; 22. Feed inlet; 23. First connecting rod; 24. Middle cylinder discharge guide plate; 25. Middle cylinder discharge baffle; 26. Inner cylinder discharge guide plate; 27. Inner cylinder discharge baffle; 28. Mounting base; 29. ​​Discharge inclined plate; 30. Receiving box; 31. Drive motor. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a raw material grading and screening device for suspending agent compounding, including a base 1, a column 2 fixedly installed at the upper end of the base 1, a first fixing block 3 fixedly installed at the upper end of the column 2, a first connecting block 4 provided at the front end of the first fixing block 3, a rotating shaft 5 provided at the rear end of the first connecting block 4, a rear end cover 6 sleeved on the outer ring of the rotating shaft 5, a screening inner cylinder 7 fixedly installed at the front end of the rear end cover 6, a screening middle cylinder 8 fixedly installed at the front end of the rear end cover 6, a screening outer cylinder 9 fixedly installed at the front end of the rear end cover 6, a dispersing disc 10 sleeved on the outer ring of the rotating shaft 5, a spiral blade 11 sleeved on the outer ring of the rotating shaft 5, an anchor-type wall scraper 12 fixedly installed at the front end of the rear end cover 6, brush bristles 13 fixedly installed at both ends of the anchor-type wall scraper 12, and a front end cover 15 provided at the front end of the screening outer cylinder 9.

[0020] Furthermore, a sealing ring 14 is provided on the outer ring of the screening outer cylinder 9. The screening outer cylinder 9 and the front cover 15 are connected by the sealing ring 14. By setting the sealing ring 14, the screening outer cylinder 9 and the front cover 15 can be tightly fitted and sealed, which can reduce the waste of raw materials caused by leakage due to gaps.

[0021] Furthermore, a reinforcing rib 16 is fixedly installed at the front end of the front end cover 15, and a second connecting block 17 is fixedly installed at the front end of the reinforcing rib 16. Through the setting of the reinforcing rib 16, an effective structural support can be formed for the front end cover 15, and the stress generated by the vibration of the screening component can be dispersed.

[0022] Furthermore, a slide groove 18 is fixedly installed on the upper end of the base 1, and a hydraulic cylinder 19 is provided on the upper end of the slide groove 18. A second fixing block 20 is fixedly installed on the upper end of the hydraulic cylinder 19. A second connecting rod 21 is fixedly installed through both ends of the second fixing block 20. The second fixing block 20 and the second connecting block 17 are connected by the second connecting rod 21. The second connecting block 17 and the second connecting rod 21 form a rotating structure. Through the setting of the hydraulic cylinder 19, whose model is CD250E-80 / 45-630, the second fixing block 20 can be driven to move up and down by its telescopic action. In conjunction with the rotating structure of the second connecting block 17 and the second connecting rod 21, the entire screening assembly can flexibly adjust its tilt angle around the rotation point of the first connecting block 4 and the first connecting rod 23.

[0023] Furthermore, the front end cover 15 is provided with a feed inlet 22 at the front end, and the first connecting rod 23 is fixedly installed through both ends of the first fixing block 3. The first fixing block 3 and the first connecting block 4 are connected by the first connecting rod 23. The first connecting block 4 and the first connecting rod 23 form a rotating structure. The setting of the first connecting rod 23 provides a fixed fulcrum for the angle adjustment of the screening component around the column 2 side, ensuring that the axis of the screening component does not deviate during the adjustment process.

[0024] Furthermore, a middle cylinder discharge guide plate 24 is fixedly installed at the rear end of the rear end cover 6, and a middle cylinder discharge baffle 25 is provided at the upper end of the middle cylinder discharge guide plate 24. An inner cylinder discharge guide plate 26 is fixedly installed at the rear end of the rear end cover 6, and an inner cylinder discharge baffle 27 is provided at the upper end of the inner cylinder discharge guide plate 26. Through the setting of the middle cylinder discharge guide plate 24, an inclined guiding channel can be provided for the raw materials separated in the sandwich between the screening middle cylinder 8 and the screening inner cylinder 7, guiding them to slide smoothly along the preset path and accurately connect with the discharge inclined plate 29 below.

[0025] Furthermore, a mounting base 28 is fixedly installed on the upper end of the base 1, and a discharge inclined plate 29 is fixedly installed on the upper end of the mounting base 28. A receiving box 30 is provided at the lower end of the screening outer cylinder 9, and a drive motor 31 is provided at the rear end of the second connecting block 17. The rotating shaft 5 is connected to the output end of the drive motor 31 through a coupling. With the setting of the receiving box 30, the raw materials falling after screening by the screening outer cylinder 9 can be accurately received, providing an independent and centralized collection space for the graded raw materials of this level.

[0026] Working principle: Based on the flowability of the suspension raw material to be screened, the hydraulic cylinder 19 is activated, and its extension and retraction drive the second fixed block 20 to move vertically. Since the second fixed block 20 is connected to the second connecting block 17 via the second connecting rod 21, and the second connecting block 17 and the second connecting rod 21 form a rotating structure, and the first fixed block 3 is connected to the first connecting block 4 via the first connecting rod 23, the extension and retraction of the hydraulic cylinder 19 will drive the entire screening assembly consisting of the front cover 15, the inner screening cylinder 7, the middle screening cylinder 8, and the outer screening cylinder 9. The tilt angle is flexibly adjusted around the rotation point of the first connecting block 4 and the first connecting rod 23 until it meets the screening requirements of the current raw material. The suspension raw material to be screened is fed into the device through the feed port 22 of the front cover 15. At the same time, the drive motor 31 at the rear end of the second connecting block 17 is started. The drive motor 31 drives the rotating shaft 5 to rotate at high speed through the coupling. The dispersing disk 10 on the rotating shaft 5 rotates synchronously with the shaft, quickly breaking down the micro-agglomerates formed by static electricity in the raw material. The initially dispersed raw material is further processed by the spiral blade 11 on the rotating shaft 5. The spiral blade 11... The rotary blade guides the raw material evenly inward along the axis of the screen cylinder through propulsion. Simultaneously, its sharp teeth physically cut large, incompletely disintegrated aggregates. The pre-treated raw material enters a concentric screen cylinder structure composed of the inner screening cylinder 7, the middle screening cylinder 8, and the outer screening cylinder 9. The rotating shaft 5 drives the entire screen cylinder to rotate synchronously. Inside the screen cylinder, the raw material moves towards the screen cylinder wall under the combined action of centrifugal force and gravity. The anchor-type wall-scraping paddle 12, fixed to the front end of the rear cover 6, rotates synchronously with the screen cylinder. The bristles 13 at both ends of the anchor-type wall-scraping paddle 12 penetrate deeply into the fine edges of the screen holes in each layer of the screen cylinder. The gaps are gently cleaned to remove fine particles that are about to clog the screen holes. The particles screened by the outer screening cylinder 9 fall directly into the collection box 30. The particles in the interlayer between the middle screening cylinder 8 and the inner screening cylinder 7 slide down the middle cylinder discharge guide plate 24 fixed by the rear end cover 6, which precisely aligns with the discharge inclined plate 29 on the mounting base 28, and finally slides into the designated collection container. The coarse particles inside the inner screening cylinder 7 slide down the inner cylinder discharge guide plate 26, and enter the corresponding coarse material collection container through the discharge inclined plate 29. The sealing ring 14 between the outer screening cylinder 9 and the front end cover 15 always remains tightly fitted.

[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 raw material grading and screening device for suspending agent compounding, comprising a base (1), characterized in that: A column (2) is fixedly installed on the upper end of the base (1). A first fixing block (3) is fixedly installed on the upper end of the column (2). A first connecting block (4) is provided at the front end of the first fixing block (3). A rotating shaft (5) is provided at the rear end of the first connecting block (4). A rear end cover (6) is fitted around the outer ring of the rotating shaft (5). A screening inner cylinder (7) is fixedly installed at the front end of the rear end cover (6). A screening middle cylinder (8) is fixedly installed at the front end of the rear end cover (6). A screening outer cylinder (9) is fixedly installed at the front end of the rear end cover (6). A dispersing disc (10) is fitted around the outer ring of the rotating shaft (5). A spiral blade (11) is fitted around the outer ring of the rotating shaft (5). An anchor-type scraper (12) is fixedly installed at the front end of the rear end cover (6). Brush bristles (13) are fixedly installed at both ends of the anchor-type scraper (12). A front end cover (15) is provided at the front end of the screening outer cylinder (9).

2. The raw material classification and screening device for suspending agent compounding according to claim 1, characterized in that: The outer ring of the screening outer cylinder (9) is fitted with a sealing ring (14), and the screening outer cylinder (9) is connected to the front end cover (15) through the sealing ring (14).

3. The raw material classification and screening device for suspending agent compounding according to claim 1, characterized in that: The front end of the front end cover (15) is fixedly installed with a reinforcing rib (16), and the front end of the reinforcing rib (16) is fixedly installed with a second connecting block (17).

4. The raw material grading and screening device for suspending agent compounding according to claim 1, characterized in that: A slide groove (18) is fixedly installed on the upper end of the base (1). A hydraulic cylinder (19) is provided on the upper end of the slide groove (18). A second fixing block (20) is fixedly installed on the upper end of the hydraulic cylinder (19). A second connecting rod (21) is fixedly installed through both ends of the second fixing block (20). The second fixing block (20) and the second connecting block (17) are connected by the second connecting rod (21). The second connecting block (17) and the second connecting rod (21) form a rotating structure.

5. The raw material classification and screening device for suspending agent compounding according to claim 1, characterized in that: The front end cover (15) is provided with a feed port (22) at the front end. The first connecting rod (23) is fixedly installed through both ends of the first fixing block (3). The first fixing block (3) and the first connecting block (4) are connected by the first connecting rod (23). The first connecting block (4) and the first connecting rod (23) form a rotating structure.

6. The raw material grading and screening device for suspending agent compounding according to claim 1, characterized in that: The rear end cover (6) is fixedly installed with a middle cylinder discharge guide plate (24), and the upper end of the middle cylinder discharge guide plate (24) is provided with a middle cylinder discharge baffle (25). The rear end cover (6) is fixedly installed with an inner cylinder discharge guide plate (26), and the upper end of the inner cylinder discharge guide plate (26) is provided with an inner cylinder discharge baffle (27).

7. The raw material grading and screening device for suspending agent compounding according to claim 4, characterized in that: The upper end of the base (1) is fixedly installed with a mounting seat (28), the upper end of the mounting seat (28) is fixedly installed with a discharge inclined plate (29), the lower end of the screening outer cylinder (9) is provided with a receiving box (30), the rear end of the second connecting block (17) is provided with a drive motor (31), and the rotating shaft (5) is connected to the output end of the drive motor (31) through a coupling.

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