CN214555210U

CN214555210U - Self-cleaning bar screen for screening particle samples

Info

Publication number: CN214555210U
Application number: CN202120539520.5U
Authority: CN
Inventors: 刘德训; 牛月旭; ***; 张大成; 娄玉政
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-02
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a self-cleaning bar screen for screening particle samples, which comprises a screen body and bars, wherein an upper cross beam and a lower cross beam are arranged in the screen body, the bars are arranged on the upper cross beam and the lower cross beam, and the bars on the upper cross beam and the lower cross beam are arranged relatively and alternatively to form a single-row screen body; the telescopic cylinder is arranged at the bottom of the lower cross beam and outside the screen body, the front end of the telescopic cylinder is provided with a telescopic rod, the telescopic rod is connected with a horizontal moving rod, the horizontal moving rod penetrates through a plurality of positioning blocks arranged at the bottom of the lower cross beam in a sliding manner, the horizontal moving rod is connected with a plurality of swinging rods through a rotating shaft, the other end of each swinging rod is connected with the bottom of a guide fixing rod through a rotating shaft II, the guide fixing rod penetrates through the lower cross beam, the top of the guide fixing rod is fixedly connected with the upper cross beam, and the telescopic rod for the telescopic cylinder moves to drive the upper cross beam to move up and down to clean the bar screen; the utility model discloses a combination formula setting of entablature and bottom end rail realizes the holistic automatic clearance of not shutting down of bar screen, and screening efficiency improves, need not to shut down, has improved the operation rate.

Description

Self-cleaning bar screen for screening particle samples

Technical Field

The utility model relates to a sample screening installation technical field, concretely relates to self-cleaning bar screen of screening granule sample.

Background

The bar screen is a device for screening out powder in solid particles, and is structurally shown in figure 1, wherein the bar screen is formed by fixing bars 1 which are horizontally arranged on a cross beam 15 to form a single-row screen body, a plurality of rows of screen bodies are arranged layer by layer to form a screen plate 16, the screen plate is fixed on the whole screen body, and a vibration exciter is arranged outside the whole screen body. In the operation process, the whole sieve body vibrates under the action of the vibration exciter, and the bars classify materials on the sieve plate. Under the vibration action, the amplitude of the front end of the bar is large, and the gap between adjacent bars is constantly changed and generally cannot be blocked; the amplitude of the root of the bar is small, the gap is basically fixed, and the bar is often blocked by particles and powder after being used for a period of time, so that the screening efficiency of the screen is reduced. Therefore, a self-cleaning bar screen for screening particle samples is needed to solve the problem that the screening efficiency of the bar screen is low due to small amplitude of the root of the bar and easy blockage by particles and powder.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a self-cleaning bar screen of screening granule sample.

The utility model provides a technical scheme that its technical problem adopted is: a self-cleaning bar screen for screening particle samples comprises a screen body and bars, wherein an upper cross beam and a lower cross beam are arranged in the screen body, the bars are arranged on the upper cross beam and the lower cross beam, and the bars on the upper cross beam and the lower cross beam are arranged oppositely and in a staggered manner to form a single-row screen body;

bottom end rail bottom and at screen frame externally mounted have telescopic cylinder, the telescopic cylinder front end is equipped with the telescopic link, horizontal migration pole is connected to the telescopic link, horizontal migration pole slides and passes a plurality of locating pieces of installing in the bottom end rail, be used for telescopic cylinder to promote horizontal migration pole horizontal migration in the locating piece, horizontal migration pole is last to be connected a plurality of swinging arms through pivot one, the swinging arm other end is through the bottom of pivot two connection direction dead levers, be used for horizontal migration pole horizontal migration to drive the vertical removal of direction dead lever, the direction dead lever passes bottom end rail and top fixed connection upper beam, a telescopic link for telescopic cylinder removes and drives the entablature and reciprocates clearance stick bar screen.

Specifically, springs are arranged on two sides between the upper cross beam and the lower cross beam and are in a compression state, and the springs are used for assisting the telescopic cylinder to push the upper cross beam to ascend.

Specifically, the single-row screen frame is equipped with a plurality of and range upon range of distribution formation sieve, and the stick below of sieve is equipped with undersize thing funnel, and the stick end of sieve is equipped with oversize thing funnel.

Specifically, a sealing cover is installed at the bottom of the lower cross beam and used for covering the guide fixing rod, the swinging rod, the horizontal moving rod and the limiting block.

The utility model discloses following beneficial effect has:

the self-cleaning bar screen for screening particle samples, which is designed by the utility model, realizes the non-stop automatic cleaning of the whole bar screen by the combined arrangement of the upper beam and the lower beam and the control of the separation and the movement between the upper beam and the lower beam by the telescopic cylinder, avoids the small amplitude of the bar root from being blocked, and realizes the low screening efficiency and the great improvement of the bar screen; the cleaning is convenient, the automatic cleaning is realized, the cleaning is thorough, the screening efficiency is improved, the machine does not need to be stopped, and the operation rate is improved.

Drawings

Fig. 1 is a schematic view of a prior art bar screen.

FIG. 2 is a schematic diagram of a single row of screen bodies of a self-cleaning bar screen for screening a particulate sample.

Fig. 3 is a schematic diagram of the structure of the single-row screen body when the upper cross beam is lifted.

Fig. 4 is a schematic structural view of the upper and lower cross members.

In the figure: 1-bar; 2-upper beam; 3-a lower cross beam; 4-guiding the fixed rod; 5-a swing lever; 6-horizontal moving rod; 7-positioning blocks; 8-a telescopic cylinder; 9-a telescopic rod; 10-a sieve body; 11-a sealing cover; 12-a first rotating shaft; 13-rotating shaft II; 14-a spring; 15-a cross beam; 16-sieve plate; 17-undersize funnel; 18-oversize funnel.

Detailed Description

The technical solution in the embodiments of the present invention will be described in further detail in the following clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2-4, a self-cleaning bar screen for screening particle samples comprises a screen body 10 and bars 1, wherein an upper cross beam 2 and a lower cross beam 3 are arranged in the screen body 10, the bars 1 are arranged on the upper cross beam 2 and the lower cross beam 3, and the bars 1 on the upper cross beam 2 and the lower cross beam 3 are arranged oppositely and alternately to form a single-row screen body.

As shown in figure 1, a plurality of sieve plates 16 are arranged on the single-row sieve body in a stacked distribution mode, undersize material funnels 17 are arranged below the bars 1 of the sieve plates 16 and used for receiving undersize small particles and powder, oversize material funnels 18 are arranged at the tail ends of the bars of the sieve plates 16 and used for receiving large particles on the bars 1, and sieving and extracting of particle samples are achieved.

A telescopic cylinder 8 is arranged at the bottom of the lower cross beam 3 and outside the screen body 10, a telescopic rod 9 is arranged at the front end of the telescopic cylinder 8, the telescopic rod 9 is connected with a horizontal moving rod 6, the horizontal moving rod 6 slides through a plurality of positioning blocks 7 arranged at the bottom of the lower cross beam 3, a sliding hole is arranged in the middle of each positioning block 7 and used for horizontally moving the horizontal moving rod 6 in the positioning blocks 7, the telescopic cylinder 8 pushes the horizontal moving rod 6 to horizontally move in the positioning blocks 7, the horizontal moving rod 6 is connected with a plurality of swing rods 5 through a first rotating shaft 12, the other end of each swing rod 5 is connected with the bottom of the corresponding guide fixing rod 4 through a second rotating shaft 13 and used for driving the corresponding guide fixing rod 4 to vertically move by the horizontal moving rod 6, the corresponding guide fixing rod 4 passes through the lower cross beam 3 and the top of the corresponding upper cross beam 2, the telescopic rod of the telescopic cylinder 8 pushes the horizontal moving rod 6 to horizontally move and pushes the upper end of the swing rod 5 to move rightwards, the lower end of the oscillating rod 5 pulls the bottom of the guide fixing rod 4, and the top of the guide fixing rod 4 is fixed, so that the guide fixing rod 4 generates upward force to drive the upper beam 2 to move upwards to clean the bar screen, and otherwise, when the telescopic cylinder 8 retracts, the upper beam 2 moves downwards.

Springs 14 are mounted on two sides between the upper cross beam 2 and the lower cross beam 3, and the springs 14 are in a compression state when the telescopic cylinder 8 retracts and are used for assisting the telescopic cylinder 8 to push the upper cross beam 2 to ascend. And a sealing cover 11 is arranged at the bottom of the lower beam 3 and used for sealing and protecting the guide fixing rod 4, the swinging rod 5, the horizontal moving rod 6 and the limiting block 7.

The utility model discloses during normal production user state, entablature 2 and the crisscross arrangement of bottom end rail 3 are in the same place, stick 1 of screen frame 10 is on same straight line, the spacing distance is the same, when needing to clear up the jam, telescopic cylinder 8 promotes horizontal migration pole 6 forward, horizontal migration of horizontal migration pole 6 leads to the slope of swinging arms 5, become flexible and part under spring 14 effect between entablature 2 and the

bottom end rail

3, 1 interval increase of adjacent stick, the granule or the powder of jam between adjacent stick under the vibration effect break away from the stick, realize the effect from the clearance. After cleaning, the telescopic cylinder 8 is pulled back, the upper beam 2 and the lower beam 3 are tensioned by the guide fixing rod 4 acting on the oscillating rod 5, the spring 14 is compressed, the upper beam 2 and the lower beam 3 are combined, one cleaning operation is finished, and normal operation is recovered. The telescopic cylinder 8 can be automatically started at regular time or manually started at irregular time as required, and the cleaning operation can be finished in the normal operation process or after the material is stopped for a short time.

The utility model discloses not be limited to above-mentioned embodiment, anybody should learn the structural change who makes under the teaching of the utility model, all with the utility model discloses have the same or close technical scheme, all fall into the utility model discloses an within the protection scope.

The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims

1. A self-cleaning bar screen for screening particle samples is characterized by comprising a screen body and bars, wherein an upper cross beam and a lower cross beam are arranged in the screen body, the bars are arranged on the upper cross beam and the lower cross beam, and the bars on the upper cross beam and the lower cross beam are arranged oppositely and in a staggered manner to form a single-row screen body;

2. The self-cleaning bar screen of claim 1, wherein springs are mounted on both sides between the upper and lower beams and in a compressed state to assist the telescopic cylinder in pushing the upper beam up.

3. The self-cleaning bar screen for screening particle samples as claimed in claim 1, wherein the single row of screen body is provided with a plurality of screen plates which are stacked to form a screen plate, the undersize material funnels are arranged below the bars of the screen plate, and the oversize material funnels are arranged at the ends of the bars of the screen plate.

4. The self-cleaning bar screen of claim 1, wherein a sealing cover is installed at the bottom of the lower beam for covering the guide fixing rod, the swing rod, the horizontal moving rod and the stopper.