Dry material accurate granularity screening device

Abstract

The utility model relates to the technical field of material screening, in particular to a dry material accurate granularity screening device which comprises a box body, a screen frame, a screen mesh, a vibration device and an auxiliary screening device, supporting legs are installed at the four corners of the bottom end of the box body, and a cavity with an upper opening is formed in the box body. The screen frame is installed in the cavity through the vibration device, the screen is installed in the screen frame, the auxiliary screening device is installed in the screen frame, and when the screen frame is acted by a striking head, the impact of the striking head on the screen frame is transmitted to a sliding block through a connecting column, so that the sliding block slides on a fixing column; the sliding blocks drive the screen frame to move up and down on the fixing columns through the connecting columns, the springs play a role in buffering and restoring and generate the motion amplitude in the up-down direction, the elastic characteristic of the springs enables the sliding blocks to have certain elasticity and restoring force when moving on the fixing columns, and therefore the screening effect is enhanced, and dispersion of materials is further promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to material screening technical field, concretely is a kind of dry material precision particle size screening device. BACKGROUND

[0002] It is known that dry material precision particle size screening device is widely used in chemical industry, food processing, mining and other industries, for classifying material according to specific particle size requirements.

[0003] Traditional screening device mainly relies on single vibration motor to screen, and the distribution of material on the screen is uneven, which leads to low screening efficiency. Single vibration mode cannot ensure the uniform distribution of material on the screen, and it is easy to cause screen hole blockage, affecting the screening accuracy. The accumulation of material on the screen can easily cause screen hole blockage, affecting the continuity and stability of the screening process. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a dry material precision particle size screening device.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a dry material precision particle size screening device, comprising a box body, a screen frame, a screen, a vibration device and an auxiliary screening device, support legs are installed at the bottom corners of the box body, the box body is provided with a cavity with an upper opening, the screen frame is installed in the cavity by the vibration device, the screen is installed in the screen frame, the auxiliary screening device is installed in the screen frame, the vibration device comprises a groove, a fixed column, a sliding block, a connecting column, a spring, a drive shaft, a vibration motor, a first motor, a fixed ring and a striking head, the grooves are formed in the four corner side walls of the box body, the fixed columns are fixedly installed in the four grooves, the sliding blocks are slidingly installed on the four fixed columns, the connecting columns are fixedly installed on the corners of the sliding blocks away from the grooves, the four connecting columns are fixedly connected with the four corners of the screen frame, the springs are installed on the upper and lower ends of the sliding blocks and around the outer walls of the fixed columns, the vibration motor is installed on the side wall of the screen frame, the drive shaft is rotatably installed below the screen frame, the first motor is installed on one end of the drive shaft and penetrates the side wall of the box body, the fixed rings are installed on the outer walls of both ends of the drive shaft, the striking head is installed on the outer wall of the fixed ring, and the discharge pipe is installed on the bottom wall of the box body.

[0008] In order to assist the screen frame to screen, the utility model improves, has, the auxiliary screening device includes electric telescopic handle, drive motor, rotating shaft and turning leaf, the side wall of screen frame installs electric telescopic handle, the output end of electric telescopic handle penetrates screen frame side wall and drive motor side wall connection, the output end of drive motor installs rotating shaft, the side wall of rotating shaft is annular and is installed with a plurality of turning leaves.

[0009] In order to protect the screening process, the utility model improves, the top of box body is hinged and is installed with box cover, and the top of box cover is installed with feed pipe.

[0010] In order to facilitate the unqualified material discharge, the utility model improves, the side wall of box body is installed with discharge frame, the side wall of screen frame is opened with opening, and the opening is installed with telescopic discharge frame between the discharge frame, the top of screen frame is opened with the rectangular slot that blocks the opening, and the baffle is slidably installed in the rectangular slot.

[0011] In order to guide the qualified material, the utility model improves, the bottom wall of box body is opened with flow guide cavity.

[0012] In order to facilitate the replacement of different precision screen, the utility model improves, screen frame and screen are detachably connected.

[0013] In order to facilitate the disassembly baffle, the utility model improves, the top of baffle is installed with handle.

[0014] In order to protect the drive motor, the utility model improves, the outer wall of drive motor is installed with protective shell.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a kind of dry material precision particle size screening device, with following beneficial effects:

[0017] The dry material precision particle size screening device, by the vibration device of setting, vibration motor generates periodic vibration, so that the screen frame and the screen in it installed on it are vibrated, the first motor drives the rotation of driving shaft, and the fixed ring at both ends of driving shaft and the beating head thereon rotate, and the beating head periodically knocks the screen frame, and the impact of the beating head is transmitted to the sliding block through the connecting column, so that the sliding block slides on the fixed column, and the sliding block drives the screen frame to move up and down on the fixed column through the connecting column, the elastic property of spring makes the movement of sliding block on fixed column have certain elasticity and restoring force, to enhance the effect of screening, further promote the dispersion of material, significantly improve screening efficiency and screening precision.

[0018] The dry material precision particle size screening device, through the auxiliary screening device, the output end of the electric telescopic rod is stretched out or retracted, drives the driving motor to move in the screen frame, the position of the driving motor can be adjusted as required, so that the material in the screen frame is better covered, the turning leaves continuously turn the material, break the accumulation of the material, make the material more evenly distributed on the screen, improve the contact area of the material and the screen, thereby improve the screening efficiency, make more material have the opportunity to pass through the screen, reduce the blockage of the screen, improve the screening speed, the turning of the turning leaves can also prevent the local accumulation of the material on the screen, reduce the risk of screen hole blockage, ensure the continuity and stability of the screening process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a box body inside three-dimensional structure schematic view of the utility model;

[0021] Figure 3 It is a box body half cut first angle three-dimensional structure schematic view of the utility model;

[0022] Figure 4 It is a box body half cut second angle three-dimensional structure schematic view of the utility model.

[0023] In the drawing: 1, box body; 2, screen frame; 3, screen; 4, recess; 5, fixed column; 6, sliding block; 7, connecting column; 8, spring; 9, driving shaft; 10, vibration motor; 11, first motor; 12, fixed ring; 13, beating head; 14, discharge pipe; 15, electric telescopic rod; 16, driving motor; 17, rotating shaft; 18, turning leaf; 19, box cover; 20, feed pipe; 21, discharge frame; 22, opening; 23, telescopic discharge frame; 24, rectangular groove; 25, baffle; 26, flow guide cavity; 27, handle; 28, protective shell. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-4A kind of dry material precision particle screening device, including box 1, screen frame 2, screen 3, vibrating device and auxiliary screening device, the bottom end four corners of the box 1 are equipped with support leg, the box 1 is equipped with cavity with upper opening 22, the vibrating device is installed in the cavity with the screen frame 2, the screen frame 2 is installed with the screen 3, the screen frame 2 is installed with the auxiliary screening device, the vibrating device includes groove 4, fixed column 5, sliding block 6, connecting column 7, spring 8, drive shaft 9, vibration motor 10, first motor 11, fixed ring 12 and beating head 13, the groove 4 is formed in the four corners of the side wall of the box 1, four groups of fixed column 5 are fixedly installed in the four groups of grooves 4, four groups of sliding blocks 6 are slidably installed on the four groups of fixed columns 5, four groups of connecting columns 7 are fixedly installed on the corner away from the groove 4 of the sliding block 6, the four corners of the screen frame 2 are fixedly connected with the one end of the four groups of connecting columns 7 away from the sliding block 6, the upper and lower ends of the sliding block 6 are both installed with spring 8 sleeved on the outer wall of the fixed column 5, the side wall of the screen frame 2 is installed with vibration motor 10, the drive shaft 9 is rotatably installed below the screen frame 2, the first motor 11 is installed on the one end of the drive shaft 9 penetrating the side wall of the box 1, the fixed ring 12 is installed on the outer wall of the drive shaft 9, the beating head 13 is installed on the outer wall of the fixed ring 12, the bottom wall of the box 1 is installed with discharge pipe 14, in the embodiment, when using, vibration motor 10 is started, vibration motor 10 generates periodic vibration, so that the screen frame 2 and the screen 3 in the screen frame 2 are vibrated, vibration helps material to move on the screen 3, promotes small particles to pass through screen hole, while larger particles are left above the screen 3, at the same time, first motor 11 is started, drive shaft 9 is rotated, fixed ring 12 on the both ends of drive shaft 9 and beating head 13 thereon are rotated, beating head 13 periodically knocks screen frame 2, when screen frame 2 is acted on by beating head 13, the impact of beating head 13 is transmitted to sliding block 6 through connecting column 7, so that sliding block 6 slides on fixed column 5, sliding block 6 drives screen frame 2 to move up and down on fixed column 5 through connecting column 7, spring 8 plays the role of buffering and recovery, generates the movement amplitude in up and down direction,The elastic property of the spring 8 makes the movement of the slider 6 on the fixed column 5 elastic and resilient, thereby enhancing the screening effect, further promoting the dispersion of the material, preventing the screen hole from being blocked, and improving the screening efficiency. After the vibration motor 10 and the first motor 11 have been stably operated, the dry material to be screened is added to the opening 22 at the top of the box 1. After the material enters the cavity, it is uniformly distributed on the screen 3 under the action of vibration. Under the action of vibration and the beating head 13, the material continuously moves on the screen 3. The material smaller than the diameter of the screen hole will fall into the bottom of the box 1 through the screen hole and be discharged through the discharge pipe 14. The material larger than the diameter of the screen hole is left above the screen 3. During the screening process, the auxiliary screening device is used to assist in screening the material to prevent the material from accumulating and blocking. According to the actual screening effect, the frequency of the vibration motor 10 and the speed of the first motor 11 are adjusted by the PLC controller to achieve the best screening effect.

[0026] In actual use, the auxiliary screening device is further used to assist the screening of the screen frame 2. In this embodiment, the auxiliary screening device includes an electric telescopic rod 15, a driving motor 16, a rotating shaft 17, and a turning blade 18. The electric telescopic rod 15 is installed on one side wall of the screen frame 2. The output end of the electric telescopic rod 15 penetrates the side wall of the screen frame 2 and is connected to the side wall of the driving motor 16. The output end of the driving motor 16 is installed with the rotating shaft 17. The side wall of the rotating shaft 17 is annularly installed with multiple groups of the turning blade 18. After the electric telescopic rod 15 is started, its output end is extended or retracted, driving the driving motor 16 to move in the screen frame 2. This action can adjust the position of the driving motor 16 as needed to better cover the material in the screen frame 2. After the driving motor 16 is started, its output end drives the rotating shaft 17 to rotate, and the turning blade 18 on the rotating shaft 17 rotates accordingly, turning the material. The turning blade 18 continuously turns the material during rotation, making the material more evenly distributed on the screen 3. This helps the material better contact the screen 3, improving the screening efficiency. The turning of the turning blade 18 cooperates with the vibration of the vibration motor 10 and the beating head 13 to further promote the dispersion and screening of the material. The turning of the turning blade 18 can break the accumulation of the material, allowing more material to pass through the screen 3.

[0027] In actual use, the screening process is further protected. In this embodiment, the box cover 19 is hingedly installed at the top end of the box 1. The inlet pipe 20 is installed at the top end of the box cover 19. When the box cover 19 is closed, it can effectively prevent dust and impurities from entering the box 1, keep the screening environment clean, ensure the quality of the screened material, prevent external pollutants from entering the box 1, and avoid pollution to the screening process and the final product. The inlet pipe 20 is used to add dry material to be screened into the box 1.

[0028] In actual use, further facilitate the discharge of unqualified material, in this embodiment, the side wall of the box 1 is provided with a discharge frame 21, the side wall of the screen frame 2 is provided with an opening 22, the opening 22 and the discharge frame 21 are provided with a telescopic discharge frame 23, the top of the screen frame 2 is provided with a rectangular groove 24 for blocking the opening 22, the rectangular groove 24 is provided with a baffle 25, when the larger particle material that does not pass through the screen 3 needs to be discharged, the baffle 25 is slid to move away from the rectangular groove 24, the opening 22 is opened, after the baffle 25 is opened, the larger particle material that does not pass through the screen 3 passes through the opening 22 and the telescopic discharge frame 23, enters the discharge frame 21, and finally is discharged out of the box 1, after the material is discharged, the baffle 25 is slid to move back to the rectangular groove 24, the opening 22 is closed, and other materials are prevented from continuing to be discharged, and the telescopic electric telescopic rod 15 can further push and guide the discharge of unqualified material.

[0029] In actual use, further guide the qualified material, in this embodiment, the bottom wall of the box 1 is provided with a flow guide cavity 26, the design of the flow guide cavity 26 can ensure that the qualified material passing through the screen 3 flows smoothly to the discharge pipe 14, reduces the accumulation of material at the bottom of the box 1, and improves the flow efficiency of the material.

[0030] In actual use, further facilitate the replacement of different precision screens 3, in this embodiment, the screen frame 2 and the screen 3 are detachably connected, the detachable screen 3 design enables users to replace different precision screens 3 as needed, and adapt to the screening needs of different dry materials.

[0031] In actual use, further facilitate the disassembly of the baffle 25, in this embodiment, the top of the baffle 25 is provided with a handle 27, the handle 27 enables the operator to easily grasp the baffle 25 without directly contacting the baffle 25, reducing the inconvenience of operation.

[0032] In actual use, further protect the driving motor 16, in this embodiment, the outer wall of the driving motor 16 is provided with a protective shell 28, the protective shell 28 can effectively prevent dust and impurities from entering the inside of the driving motor 16, keep the inside of the driving motor 16 clean, and prolong the service life of the driving motor 16.

[0033] In order to explain the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects of the present application, the specific embodiments are described in detail below in conjunction with the drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dry material precision particle screening device, comprising a box (1), a screen frame (2), a screen mesh (3), a vibrating device and an auxiliary screening device, characterized in that: The bottom end of the box (1) is provided with supporting legs, and the box (1) is provided with a cavity with an upper opening (22), the vibration device is installed in the cavity, the screen frame (2) is installed in the cavity, the screen mesh (3) is installed in the screen frame (2), and the auxiliary screening device is installed in the screen frame (2). The vibration device comprises a groove (4), a fixed column (5), a sliding block (6), a connecting column (7), a spring (8), a drive shaft (9), a vibration motor (10), a first motor (11), a fixed ring (12) and a knocking head (13), the groove (4) is formed in the four corners of the side wall of the box (1), four groups of the fixed column (5) are fixedly installed in the groove (4), the sliding block (6) is slidably installed on the four groups of the fixed column (5), the connecting column (7) is fixedly installed on the corner, away from the groove (4), of the four groups of the sliding block (6), one end, away from the sliding block (6), of the four groups of the connecting column (7) is fixedly connected with the four corners of the screen frame (2), the spring (8) is installed on the outer wall of the fixed column (5) and the upper and lower ends of the sliding block (6), the vibration motor (10) is installed on the side wall of the screen frame (2), the drive shaft (9) is rotatably installed below the screen frame (2), one end of the drive shaft (9) penetrates through the side wall of the box (1) and is provided with the first motor (11), the fixed ring (12) is installed on the outer wall of both ends of the drive shaft (9), the knocking head (13) is installed on the outer wall of the fixed ring (12), and the bottom wall of the box (1) is provided with a discharge pipe (14).

2. A dry material precision particle sizing device as claimed in claim 1, wherein: The auxiliary screening device comprises an electric telescopic rod (15), a drive motor (16), a rotating shaft (17) and a turning leaf (18), the electric telescopic rod (15) is installed on one side wall of the screen frame (2), the output end of the electric telescopic rod (15) penetrates through the side wall of the screen frame (2) and is connected with the side wall of the drive motor (16), the output end of the drive motor (16) is provided with the rotating shaft (17), and the side wall of the rotating shaft (17) is annularly provided with a plurality of the turning leaves (18).

3. A dry material precision particle sizing device as claimed in claim 2, wherein: The top end of the box (1) is hingedly installed with a box cover (19), and the top end of the box cover (19) is provided with a feeding pipe (20).

4. The dry material precision particle sizing device of claim 3, wherein: The side wall of the box (1) is provided with a discharge frame (21), the side wall of the screen frame (2) is provided with an opening (22), the opening (22) and the discharge frame (21) are provided with a telescopic discharge frame (23), the top end of the screen frame (2) is provided with a rectangular groove (24) for blocking the opening (22), and the rectangular groove (24) is slidably provided with a baffle (25).

5. A dry material precision particle sizing device as claimed in claim 4, wherein: The bottom wall of the box (1) is provided with a flow guide cavity (26).

6. A dry material precision particle sizing device as claimed in claim 5, wherein: The screen frame (2) and the screen mesh (3) are detachably connected.

7. A dry material precision particle sizing device as claimed in claim 6, wherein: The top end of the baffle (25) is provided with a handle (27).

8. A dry material precision particle sizing device as claimed in claim 7, wherein: The outer wall of the drive motor (16) is provided with a protective shell (28).

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