Vertical airflow classifier with raw material screening function

Abstract

The utility model discloses a vertical airflow classifier with a raw material screening function, and relates to the technical field of airflow classifiers. The grading machine comprises a grading machine body, a pre-screening assembly and a crushing assembly, the top of the left side of the grading machine body is communicated with a discharging pipe, the bottom of the left side of the grading machine body is communicated with an air supply pipe, the pre-screening assembly comprises a screening box, and the bottom of the screening box is communicated with a feeding pipe at the top of the grading machine body. Through the arrangement of the pre-screening assembly, the curved bar can be driven by the first motor to rotate, the protruding face of the curved bar continuously extrudes the screen plate when the curved bar rotates, the screen plate and the spring are matched to continuously move up and down in a reciprocating mode, and materials on the top of the screen plate are preliminarily screened through continuous vibration of the screen plate; and large-particle materials are screened out and crushed again, small-particle materials enter the classifier body to be sorted, additional pre-screening equipment does not need to be used, operation steps are reduced, and the sorting efficiency of the materials is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of air classifiers, and in particular relates to a vertical air classifier with raw material screening function. Background Technology

[0002] Vertical air classifier is a widely used piece of equipment in the industrial field. It uses the dynamic principle of airflow to classify materials to achieve particle size classification and screening. The equipment consists of a classifier, cyclone separator, dust collector and induced draft fan, etc. When working, the material enters under the attraction of the induced draft fan and mixes with the external primary air. The gas-solid mixture is classified in the classification zone by centrifugal force and centripetal force.

[0003] Currently, before classifying powder materials, pre-screening is required to remove larger particles and then feed smaller particles into a vertical air classifier for further sorting. This process requires two separate devices and two steps, which cannot be performed simultaneously. This not only increases the workload for workers but also reduces sorting efficiency, making it inconvenient for users. Therefore, we provide a vertical air classifier with raw material screening capabilities to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical air classifier with raw material screening function. By combining the pre-screening component and the crushing component, it solves the problem that existing vertical air classifiers do not have a pre-screening function and require screening equipment to screen materials in advance, which increases the difficulty of work for workers and reduces the efficiency of material sorting.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a vertical air classifier with raw material screening function, including a classifier body, a pre-screening component and a crushing component. The top left side of the classifier body is connected to a discharge pipe, and the bottom left side of the classifier body is connected to an air supply pipe.

[0007] The pre-screening assembly includes a screening box, the bottom of which is connected to the feed pipe at the top of the classifier body. The screening box has a screen plate inside, and springs are fixedly connected to the front and rear sides of the bottom of the screen plate. A first motor is fixedly connected to the rear side of the screening box, and a crank rod is fixedly connected to the front side of the output end of the first motor through the screening box.

[0008] The crushing assembly includes a hopper, the bottom of which is connected to a screening box. Cylinders are fixedly connected to both sides of the front top of the screening box. A fixed frame is fixedly connected to the output end of each cylinder on the opposite side. A second motor is fixedly connected to the rear side of the fixed frame. A crushing roller is fixedly connected to the front side of the output end of the second motor through the fixed frame. The crushing rollers on the opposite side of each roller penetrate into the inner cavity of the hopper.

[0009] The present invention is further configured such that the bottom of the screening box is fixedly connected to the grading machine body by support columns, and the number of support columns is four, which are evenly distributed at the bottom of the screening box.

[0010] The present invention is further configured such that positioning rods are fixedly connected to the front and rear sides of the top left side of the screening box cavity, the bottom of the positioning rods extends through to the bottom of the screen plate, and positioning holes are provided on the front and rear sides of the top left side of the screen plate.

[0011] The present invention is further configured such that guide blocks are fixedly connected to both sides of the bottom of the screening box, and the screen plate is trapezoidal in shape.

[0012] The present invention is further configured such that a rotating sleeve is slidably connected to the surface of the crank, and the front side of the crank is movably connected to the inner wall of the screening box through a bearing.

[0013] The present invention is further configured such that a sliding rod is fixedly connected to both the front and rear sides of the hopper, and a sliding sleeve is slidably connected to both sides of the surface of the sliding rod, with the bottom of the sliding sleeve being fixedly connected to the fixed frame.

[0014] The present invention is further configured such that openings for use with crushing rollers are provided at the bottom of both sides of the hopper, and the output ends of the two cylinders on opposite sides are fixedly connected to the fixed frame through connecting brackets.

[0015] The present invention is further configured such that a discharge square pipe is connected to the right side of the screening box, and a valve is fitted onto the discharge port at the bottom of the classifier body.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, through the setting of the pre-screening component, can drive the crank to rotate through the first motor. When the crank rotates, its convex surface continuously squeezes the screen plate, causing the screen plate and spring to move up and down repeatedly. The continuous vibration of the screen plate performs preliminary screening of the material at the top, screening out large particles for re-crushing, while small particles enter the classifier body for sorting. No additional pre-screening equipment is needed, reducing operation steps and improving material sorting efficiency.

[0018] 2. This utility model, through the setting of the crushing component, can move two fixed frames driven by a cylinder. The distance between the two crushing rollers can be adjusted by the fixed frames to facilitate the crushing of materials of different specifications. By turning on the second motor, the crushing rollers are driven to rotate, which crushes the lumpy materials entering the hopper, preventing them from clogging the conveying pipeline and failing to pass through the sieve, thereby further improving the sorting efficiency of materials.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a vertical air classifier with raw material screening function;

[0022] Figure 2 A side view of the pre-screening component of a vertical air classifier with raw material screening function;

[0023] Figure 3 A cross-sectional view of the screening box of a vertical air classifier with raw material screening function;

[0024] Figure 4 This is a cross-sectional view of the body of a vertical air classifier with raw material screening function;

[0025] Figure 5 This is a cross-sectional view of the hopper of a vertical air classifier with raw material screening function.

[0026] In the attached diagram: 1. Classifier body; 2. Discharge pipe; 3. Air supply pipe; 4. Pre-screening assembly; 401. Screening box; 402. Screen plate; 403. Spring; 404. First motor; 405. Crankshaft; 5. Crushing assembly; 501. Hopper; 502. Cylinder; 503. Fixing frame; 504. Second motor; 505. Crushing roller; 6. Discharge square tube. 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 scope of protection of the present utility model. Specific Implementation Example 1

[0029] Please see Figure 1-5 This utility model is a vertical air classifier with raw material screening function, including a classifier body 1, a pre-screening component 4, and a crushing component 5. A discharge pipe 2 is connected to the top left side of the classifier body 1, and an air supply pipe 3 is connected to the bottom left side of the classifier body 1. The pre-screening component 4 includes a screening box 401, the bottom of which is connected to the feed pipe at the top of the classifier body 1. A screen plate 402 is provided inside the screening box 401. Springs 403 are fixedly connected to the front and rear sides of the bottom of the screen plate 402. A first motor 404 is fixedly connected to the rear side of the screening box 401. The front side of the output end of 404 passes through the screening box 401 and is fixedly connected to the crank rod 405. The crushing component 5 includes a hopper 501. The bottom of the hopper 501 is connected to the screening box 401. Cylinders 502 are fixedly connected to both sides of the front side of the top of the screening box 401. The output ends of the two cylinders 502 on opposite sides are fixedly connected to a fixing frame 503. The rear side of the fixing frame 503 is fixedly connected to a second motor 504. The front side of the output end of the second motor 504 passes through the fixing frame 503 and is fixedly connected to a crushing roller 505. The opposite sides of the two crushing rollers 505 pass through the inner cavity of the hopper 501.

[0030] Specifically: the sieve plate 402 can perform preliminary screening of materials, the spring 403 can make the sieve plate 402 vibrate continuously to improve its screening effect, the first motor 404 can cooperate with the crank 405 to control the vibration of the sieve plate 402, the cylinder 502 can adjust the position of the fixed frame 503, the crushing roller 505 can cooperate with the second motor 504 to crush the agglomerated materials, and the hopper 501 can conveniently send materials into the inner cavity of the screening box 401. Specific Implementation Example 2

[0032] Please see Figure 1-5Based on the first specific embodiment, the bottom of the screening box 401 is fixedly connected to the grading machine body 1 through support columns. There are four support columns, which are evenly distributed at the bottom of the screening box 401. Positioning rods are fixedly connected to the front and rear sides of the top left side of the inner cavity of the screening box 401. The bottom of the positioning rods extends to the bottom of the screen plate 402. Positioning holes are opened on the front and rear sides of the top left side of the screen plate 402. Guide blocks are fixedly connected to both sides of the bottom of the inner cavity of the screening box 401. The screen plate 402 is trapezoidal in shape.

[0033] Specifically: the support column can support the screening box 401. The support column is fixedly connected to the screening box 401 and the classifier body 1 by welding. The positioning rod can cooperate with the positioning hole to prevent the screen plate 402 from shifting its position, so that it can only move in the up and down direction. The guide block can guide the screened material to the feed pipe of the classifier body 1. The trapezoidal screen plate 402 can guide the unpassed material to the discharge square pipe 6. Specific Implementation Example 3

[0035] Please see Figure 1-5 Based on specific embodiments one and two, a rotating sleeve is slidably connected to the surface of the crank 405. The front side of the crank 405 is movably connected to the inner wall of the screening box 401 through a bearing. Sliding rods are fixedly connected to the front and rear sides of the hopper 501. Sliding sleeves are slidably connected to both sides of the sliding rod surface. The bottom of the sliding sleeves is fixedly connected to the fixed frame 503. Openings for use with crushing rollers 505 are opened at the bottom of both sides of the hopper 501. The output ends of the two cylinders 502 on opposite sides are fixedly connected to the fixed frame 503 through a connecting frame. A discharge square tube 6 is connected to the right side of the screening box 401. A valve is fitted at the discharge port at the bottom of the classifier body 1.

[0036] Specifically: the rotating sleeve can increase the performance of the crank 405 and prevent the surface of the crank 405 from being worn after long-term use; the bearing can increase the stability of the crank 405 during rotation; the sliding rod and sliding sleeve can limit the fixed frame 503 to prevent it from shifting; the opening can facilitate the crushing roller 505 to enter the inner cavity of the hopper 501; the discharge square tube 6 can discharge large particles that have not passed the screening from the screening box 401; and the valve can control the opening and closing of the discharge port at the bottom of the classifier body 1.

[0037] The working principle of this utility model is as follows: The material is fed into the hopper 501, the cylinder 502 is turned on, and the cylinder 502 drives the fixed frame 503 and the crushing roller 505 to move. The distance between the two crushing rollers 505 is adjusted according to the specifications of the material. After the material enters the hopper 501, the second motor 504 drives the crushing roller 505 to rotate. The two crushing rollers 505 crush the lumpy material and allow it to enter the inner cavity of the screening box 401 normally. The first motor 404 is turned on, and the first motor 404 and the crank 405 work together to continuously squeeze the screen plate 402. The screen plate 402 and the spring 403 work together to continuously generate vibration, which screens the material at the top. Large particles that do not pass the screening are discharged through the discharge square pipe 6. The material that passes the screening enters the classifier body 1 for classification. Due to the integrated design, the material classification work does not require the use of screening equipment to perform preliminary screening of the material before using the classifier body 1 for classification, reducing the operation steps and improving the material classification efficiency.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A vertical air classifier with raw material screening function, comprising a classifier body (1), a pre-screening component (4), and a crushing component (5), characterized in that: The top left side of the grading machine body (1) is connected to a discharge pipe (2), and the bottom left side of the grading machine body (1) is connected to an air supply pipe (3). The pre-screening component (4) includes a screening box (401). The bottom of the screening box (401) is connected to the feed pipe at the top of the classifier body (1). The inner cavity of the screening box (401) is provided with a screen plate (402). Springs (403) are fixedly connected to the front and rear sides of the bottom of the screen plate (402). A first motor (404) is fixedly connected to the rear side of the screening box (401). The front side of the output end of the first motor (404) passes through the screening box (401) and is fixedly connected with a crank (405). The crushing assembly (5) includes a hopper (501), the bottom of which is connected to a screening box (401). Cylinders (502) are fixedly connected to both sides of the front top of the screening box (401). A fixed frame (503) is fixedly connected to the output end of the two cylinders (502) on opposite sides. A second motor (504) is fixedly connected to the rear side of the fixed frame (503). The front side of the output end of the second motor (504) passes through the fixed frame (503) and is fixedly connected to a crushing roller (505). The two crushing rollers (505) on opposite sides pass through the inner cavity of the hopper (501).

2. A vertical air classifier with raw material screening function according to claim 1, characterized in that, The bottom of the screening box (401) is fixedly connected to the classifier body (1) by support columns. There are four support columns, which are evenly distributed at the bottom of the screening box (401).

3. A vertical air classifier with raw material screening function according to claim 1, characterized in that, Positioning rods are fixedly connected to the front and rear sides of the top left side of the inner cavity of the screening box (401). The bottom of the positioning rods extends through to the bottom of the screen plate (402). Positioning holes are provided on the front and rear sides of the top left side of the screen plate (402).

4. A vertical air classifier with raw material screening function according to claim 1, characterized in that, Guide blocks are fixedly connected to both sides of the bottom of the inner cavity of the screening box (401), and the sieve plate (402) is trapezoidal in shape.

5. A vertical air classifier with raw material screening function according to claim 1, characterized in that, The surface of the crank (405) is slidably connected to a rotating sleeve, and the front side of the crank (405) is movably connected to the inner wall of the screening box (401) through a bearing.

6. A vertical air classifier with raw material screening function according to claim 1, characterized in that, The hopper (501) is fixedly connected to the front and rear sides with sliding rods, and sliding sleeves are slidably connected to both sides of the sliding rod surface. The bottom of the sliding sleeves is fixedly connected to the fixed frame (503).

7. A vertical air classifier with raw material screening function according to claim 1, characterized in that, The bottom of both sides of the hopper (501) is provided with openings for use with the crushing roller (505), and the output ends of the two cylinders (502) on opposite sides are fixedly connected to the fixed frame (503) through a connecting bracket.

8. A vertical air classifier with raw material screening function according to claim 1, characterized in that, The right side of the screening box (401) is connected to the discharge square pipe (6), and the discharge port at the bottom of the classifier body (1) is fitted with a valve.

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