Raw material screening device for preparing isostatic pressing graphite

Abstract

The utility model discloses a raw material screening device for preparing isostatic pressing graphite, which belongs to the field of raw material screening and comprises a rack, a conveying belt and a feeding hopper are arranged at the top of the rack, and the conveying belt is used for quickly guiding and collecting discharged materials; and the screening assembly is arranged above the conveying belt and comprises an outer barrel, the outer barrel is fixedly connected to the top of the rack through a support, a screening barrel is rotationally connected to the interior of the outer barrel, and an auger piece is attached to the inner wall of the screening barrel. The rectangular discharging port is formed in the bottom of the outer barrel, screened raw materials directly fall to the surface of the conveying belt to be conveyed and collected, meanwhile, the brush rollers are arranged on the lower surface of the conveying belt, residual powder on the surface of the conveying belt is cleaned and removed, residual accumulation is avoided, discharging smoothness and stability are guaranteed, and material loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of raw material screening technology, specifically a raw material screening device for isostatic graphite preparation. Background Technology

[0002] Isostatic graphite is made from high-purity graphite and is a novel material that has attracted much attention. It is an irreplaceable material for manufacturing single crystal furnaces, graphite crystallizers for continuous metal casting, and graphite electrodes for electrical discharge machining. When processing its raw materials, drum screens are often used for screening.

[0003] An investigation revealed that a Chinese utility model patent discloses a self-crushing drum screen (publication number: CN214718433U), comprising a frame, two pairs of drive wheels for driving the drum screen to rotate, and the drum screen itself. A V-shaped plate is mounted on the frame, with a powder material channel on the V-shaped plate and a powder material outlet at the tail. The two pairs of drive wheels are mounted on the frame. The drum screen has multiple sets of sieve openings, a feed inlet, and a discharge outlet for large pieces of material. Grooves for moving the drive wheels are provided at both ends of the outer wall of the drum screen. The advantages of this utility model are: 1. By using a hook plate to move small pieces of material upwards, they fall downwards when they reach a high position, achieving self-crushing of the small pieces; 2. By setting up a small piece material collection plate, multi-level classification of materials is achieved. Small pieces of material can be directly collected, easily crushed, and then added to the feed inlet of the drum screen.

[0004] Although the aforementioned patent can achieve self-crushing of small pieces of material through the hook plate, its feeding still uses the sliding of the guide plate to achieve the feeding operation. Since the qualified material for graphite screening is in powder form, the guide plate cannot fully guide and feed it, resulting in some material residue remaining on the surface of the feeding plate. Over time, this causes agglomeration and adhesion on the surface of the feeding plate, affecting its feeding effect. At the same time, some blocky material may remain inside the screen holes, causing screen blockage and affecting its screening effect.

[0005] Therefore, this utility model provides a raw material screening device for isostatic graphite preparation to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a raw material screening device for isostatic graphite preparation, aiming to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a raw material screening device for isostatic graphite preparation, comprising a frame, wherein a conveyor belt and a feed hopper are provided on the top of the frame, and the conveyor belt is used for rapid guiding and collection of the discharged material;

[0010] A screening assembly is disposed above a conveyor belt. The screening assembly includes an outer cylinder, which is fixedly connected to the top of the frame by a bracket. A screening cylinder is rotatably connected inside the outer cylinder, and an auger blade is attached to the inner wall of the screening cylinder. The auger blade and the screening cylinder rotate in opposite directions. The screening assembly is used for efficient screening of raw materials.

[0011] As a preferred technical solution of this application, a first motor is fixedly connected to the outer wall of the conveyor belt, and a brush roller is connected to the output end of the first motor. The two ends of the brush roller are rotatably connected to the conveyor belt through bearings.

[0012] As a preferred technical solution of this application, the outer wall brush of the brush roller is used to clean the surface of the conveyor belt, and the rotation direction of the brush roller is opposite to the conveying direction of the conveyor belt.

[0013] As a preferred technical solution of this application, a second motor is fixedly connected to the upper surface of the outer cylinder, the output shaft of the second motor is connected to a gear and a synchronous belt drive mechanism, the other end of the synchronous belt drive mechanism is connected to a main shaft, the outer wall of the main shaft is fixedly welded with an auger plate by a support rod, and a gear ring is fixedly connected to the outer wall of the screening cylinder, and the gear ring is meshed with the gear.

[0014] As a preferred technical solution of this application, the outer wall of the outer cylinder is fixedly connected to a discharge hood, and the discharge hood is sleeved on the end of the outer cylinder away from the feed hopper. The bottom of the discharge hood is provided with a discharge pipe, and the discharge pipe is provided with a conveying auger inside.

[0015] As a preferred technical solution of this application, the bottom of the outer cylinder is provided with a discharge port, and the bottom of the outer cylinder is provided with partitions on both sides of the long side corresponding to the discharge port, and the distance between the two partitions is greater than the width of the discharge port.

[0016] As a preferred technical solution of this application, one end of the main shaft is rotatably connected to the discharge hood via a bearing, and the other end of the main shaft is rotatably connected to a support frame via a bearing, and the support frame is fixedly connected to the outer wall of the outer cylinder.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this application are as follows:

[0019] 1. This utility model allows the screened raw materials to be directly dropped onto the surface of the conveyor belt for collection by opening a rectangular discharge port at the bottom of the outer cylinder. At the same time, a brush roller is set on the lower surface of the conveyor belt to clean and remove residual powder on the surface of the conveyor belt, so as to avoid residual accumulation, ensure the smoothness and stability of the material discharge, and reduce material loss.

[0020] 2. This utility model uses the opposite rotation of the screening cylinder and the auger plate to drive the material inside the screening cylinder to be subjected to two forces with different rotation directions of the screening cylinder and the auger plate. As a result, when some blocky material is stuck in the screen hole, the blocky material is broken or crushed by the driving force of the opposite force, thereby avoiding the blockage of the screen hole. Attached Figure Description

[0021] Figure 1 This is a first overall appearance schematic diagram of the present utility model;

[0022] Figure 2 This is a schematic diagram of the second overall appearance structure of the present utility model;

[0023] Figure 3 This is a partial structural diagram of the brush roller distribution of this utility model;

[0024] Figure 4 This is a schematic diagram of the axial cross-sectional structure of the screening cylinder of this utility model.

[0025] In the picture:

[0026] 1. Frame; 11. Conveyor belt; 12. First motor; 13. Brush roller; 2. Screening assembly; 21. Outer cylinder; 22. Second motor; 23. Gear; 24. Synchronous belt drive mechanism; 25. Main shaft; 26. Screwdriver plate; 27. Discharge hood; 28. Discharge pipe; 29. ​​Screening cylinder; 30. Gear ring; 3. Feed hopper. Detailed Implementation

[0027] 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.

[0028] like Figure 1-4 As shown, this utility model provides a raw material screening device for isostatic graphite preparation, including a frame 1, a conveyor belt 11 and a feed hopper 3 on the top of the frame 1, and the conveyor belt 11 is used for rapid guiding and collecting of the discharged material.

[0029] Screening assembly 2 is positioned above conveyor belt 11. Screening assembly 2 includes an outer cylinder 21, which is fixedly connected to the top of frame 1 via a bracket. Screening cylinder 29 is rotatably connected inside the outer cylinder 21, and auger blades 26 are attached to the inner wall of screening cylinder 29. The auger blades 26 and screening cylinder 29 rotate in opposite directions. Screening assembly 2 is used for efficient screening of raw materials. The feed end of feed hopper 3 is inserted into the inside of screening cylinder 29 to add raw materials into screening cylinder 29. The raw materials are then displaced by the rotation of auger blades 26 and screened in conjunction with the mesh of screening cylinder 29. The screened raw materials fall onto the surface of conveyor belt 11 for collection.

[0030] Furthermore, a first motor 12 is fixedly connected to the outer wall of the conveyor belt 11, and a brush roller 13 is connected to the output end of the first motor 12. The two ends of the brush roller 13 are rotatably connected to the conveyor belt 11 through bearings. The brush on the outer wall of the brush roller 13 is used to clean the surface of the conveyor belt 11, and the rotation direction of the brush roller 13 is opposite to the conveying direction of the conveyor belt 11. The brush roller 13 is driven by the first motor 12 to rotate, thereby cleaning the surface of the conveyor belt 11. At the same time, the rotation direction of the brush roller 13 is opposite to the conveying direction of the conveyor belt 11, so that the cleaned material falls towards the feeding end of the conveyor belt 11, thereby facilitating the feeding and collection of raw materials conveyed by the conveyor belt 11.

[0031] Furthermore, a second motor 22 is fixedly connected to the upper surface of the outer cylinder 21. The output shaft of the second motor 22 is connected to a gear 23 and a synchronous belt drive mechanism 24. The other end of the synchronous belt drive mechanism 24 is connected to a main shaft 25. The outer wall of the main shaft 25 is fixedly welded with an auger plate 26 through a support rod. The outer wall of the screening cylinder 29 is fixedly connected to a gear ring 30, and the gear ring 30 is meshed with the gear 23. The second motor 22 drives the gear 23 to rotate, and the meshing of the gear ring 30 drives the screening cylinder 29 to rotate. At the same time, the synchronous belt drive mechanism 24 drives the main shaft 25 to rotate, which in turn drives the auger plate 26 to rotate. While the auger plate 26 rotates, it can push and displace the raw material inside the screening cylinder 29, which, together with the mesh structure of the screening cylinder 29, achieves screening processing.

[0032] Furthermore, a discharge hood 27 is fixedly connected to the outer wall of the outer cylinder 21, and the discharge hood 27 is sleeved on the end of the outer cylinder 21 away from the feed hopper 3. A discharge pipe 28 is provided on the bottom of the integrated discharge hood 27, and a conveying auger is provided inside the discharge pipe 28. Through the setting of the conveying auger inside the discharge pipe 28, in conjunction with the drive of the external motor, it can achieve efficient and stable material feeding, thereby keeping the discharge part away from the feeding area of ​​the conveyor belt 11 and avoiding obstruction in the material receiving process of the two areas.

[0033] Furthermore, the bottom of the outer cylinder 21 is provided with a discharge port, and the bottom of the outer cylinder 21 is provided with baffles on both sides of the long side corresponding to the discharge port. The distance between the two baffles is greater than the width of the discharge port. The baffles are mainly used to block and protect the screened raw materials. The bottom of the baffles is in contact with the surface of the conveyor belt 11 through a sponge pad.

[0034] Furthermore, one end of the main shaft 25 is rotatably connected to the discharge hood 27 via a bearing, and the other end of the main shaft 25 is rotatably connected to a support frame via a bearing. The support frame is fixedly connected to the outer wall of the outer cylinder 21. By supporting the rotation of both ends of the main shaft 25, the main shaft 25 can be driven to rotate independently, thereby causing the main shaft 25 to drive the auger blades 26 to rotate in the opposite direction. This, in conjunction with the screening cylinder 29, achieves the crushing and processing of the blocked material, preventing it from being inserted into the screen holes and causing screen blockage.

[0035] Working principle: First, the device is powered on, and the raw material is fed into the screening cylinder 29 through the feed hopper 3. At this time, the second motor 22 drives the gear 23 to rotate, which in turn drives the screening cylinder 29 to rotate through the gear ring 30. At the same time, the synchronous belt transmission mechanism 24 drives the main shaft 25 to rotate, which realizes the rotation of the auger plate 26. While the auger plate 26 and the screening cylinder 29 are rotating, the raw material is pushed and crushed at the same time, ensuring the screening effect and reducing the clogging of the screen holes. The qualified raw material powder falls onto the conveyor belt 11 and is transported to one end for collection. While the conveyor belt 11 is rotating, it rubs against the bottom brush roller 13 to clean it, thereby removing the powder adhering to the surface of the conveyor belt 11, improving its feeding efficiency and reducing feeding loss.

[0036] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A raw material screening device for isostatic graphite preparation, characterized in that: Includes a frame (1), the top of which is provided with a conveyor belt (11) and a feed hopper (3), and the conveyor belt (11) is used for rapid flow and collection of unloading materials; Screening assembly (2) is set above conveyor belt (11). The screening assembly (2) includes an outer cylinder (21) which is fixedly connected to the top of frame (1) by a bracket. A screening cylinder (29) is rotatably connected inside the outer cylinder (21). An auger plate (26) is attached to the inner wall of the screening cylinder (29). The auger plate (26) and the screening cylinder (29) rotate in opposite directions. The screening assembly (2) is used for efficient screening of raw materials.

2. The raw material screening device for isostatic graphite preparation according to claim 1, characterized in that: A first motor (12) is fixedly connected to the outer wall of the conveyor belt (11), and a brush roller (13) is connected to the output end of the first motor (12). The two ends of the brush roller (13) are rotatably connected to the conveyor belt (11) through bearings.

3. The raw material screening device for isostatic graphite preparation according to claim 2, characterized in that: The outer wall brush of the brush roller (13) is used to clean the surface of the conveyor belt (11), and the rotation direction of the brush roller (13) is opposite to the conveying direction of the conveyor belt (11).

4. The raw material screening device for isostatic graphite preparation according to claim 3, characterized in that: A second motor (22) is fixedly connected to the upper surface of the outer cylinder (21). The output shaft of the second motor (22) is connected to a gear (23) and a synchronous belt drive mechanism (24). The other end of the synchronous belt drive mechanism (24) is connected to a main shaft (25). The outer wall of the main shaft (25) is fixedly welded with an auger plate (26) by a support rod. The outer wall of the screening cylinder (29) is fixedly connected to a toothed ring (30), and the toothed ring (30) is meshed with the gear (23).

5. The raw material screening device for isostatic graphite preparation according to claim 4, characterized in that: The outer wall of the outer cylinder (21) is fixedly connected to a discharge hood (27), and the discharge hood (27) is sleeved on the end of the outer cylinder (21) away from the feed hopper (3). The bottom of the discharge hood (27) is provided with a discharge pipe (28), and a conveying auger is provided inside the discharge pipe (28).

6. The raw material screening device for isostatic graphite preparation according to claim 4, characterized in that: The bottom of the outer cylinder (21) is provided with a discharge port. The bottom of the outer cylinder (21) is provided with partitions on both sides of the long side of the discharge port, and the distance between the two partitions is greater than the width of the discharge port.

7. The raw material screening device for isostatic graphite preparation according to claim 4, characterized in that: One end of the main shaft (25) is rotatably connected to the discharge hood (27) via a bearing, and the other end of the main shaft (25) is rotatably connected to a support frame via a bearing, and the support frame is fixedly connected to the outer wall of the outer cylinder (21).

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