CN212791430U

CN212791430U - Screen of piston pusher centrifuge

Info

Publication number: CN212791430U
Application number: CN202021319812.XU
Authority: CN
Inventors: 戴源江; 彭勇
Original assignee: Hunan Xiangda Centrifuge Manufacturing Co ltd
Current assignee: Hunan Xiangda Centrifuge Manufacturing Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-26
Anticipated expiration: 2030-07-08

Abstract

The utility model provides a piston pushes away material centrifuge screen cloth. The screen mesh of the piston pusher centrifuge comprises a plurality of screen bars arranged side by side, the two side surfaces of the screen bars, which are close to the adjacent screen bars, are provided with limiting bars, and the limiting bars on the two sides are consistent in structure and are symmetrically arranged; the length of the limiting strips is smaller than half of the length of the screen bars, and the height of the limiting strips is smaller than or equal to the height of the screen bars. The utility model provides a piston pushes away the material centrifuge screen cloth and has solved the screen bar formula of prior art and push away material centrifuge screen cloth side and move, and the clearance width changes, influences the technical problem of centrifugal screening's effect.

Description

Screen of piston pusher centrifuge

Technical Field

The utility model relates to a piston pushes away material centrifuge field, concretely relates to piston pushes away material centrifuge screen cloth.

Background

The piston pusher centrifuge is a continuous operation filter centrifuge, can continuously complete all operation processes of feeding, separating, washing, drying and discharging, and has the characteristics of high yield and high efficiency. The centrifugal machine comprises a single-stage piston pusher centrifuge, a double-stage piston pusher centrifuge and the like, and adopts the basic principle that a filter residue layer on the inner wall of a rotary drum is pushed to a next-stage rotary drum through the simultaneous reciprocating motion of the rotary drum, so that the multistage centrifugation is realized. Depending on the processing requirements of the material, a layer of screen mesh is usually arranged on the inner wall of the rotary drum, the screen mesh is generally made of metal, but some materials cannot contact with the metal due to separation requirements. The size of the screen mesh or the mesh gap made of other materials is difficult to meet the requirement, or the wear resistance is difficult to meet the requirement. For this purpose, "CN 207430537U" proposes a screen mesh formed by splicing a plurality of screen bars, and the screen mesh is implemented by using the gaps between the screen bars. However, the ceramic screen bars have high hardness and are inconvenient to process, and can only be fixed on the inner wall of the rotary drum in an adhesive manner, so that the ceramic screen bars are not very firm in practice. In the using process, the side friction is continuously generated between the sieve bars and the material pushing disc and between the sieve bars and the upper-stage rotary drum, so that the side movement of the sieve bars is easily caused, the gap width is changed, and the centrifugal screening effect is influenced.

SUMMERY OF THE UTILITY MODEL

For solving prior art's screen strip formula pushing material centrifuge screen cloth side and move, the clearance width changes, influences the technical problem of centrifugal screening's effect, the utility model provides a can avoid the piston that the side moved, solved above-mentioned problem to push material centrifuge screen cloth.

A screen mesh of a piston pusher centrifuge comprises a plurality of screen bars arranged side by side, wherein the two side surfaces of each screen bar, which are close to the adjacent screen bars, are provided with limiting bars, and the limiting bars on the two sides are consistent in structure and are symmetrically arranged; the length of the limiting strips is smaller than half of the length of the screen bars, and the height of the limiting strips is smaller than or equal to the height of the screen bars.

In a preferred embodiment of the piston pusher centrifuge screen provided in the present invention, the length of the screen bar is 60mm or 120mm, the height is 8mm, and the width of the whole screen bar and both sides thereof, which is composed of the spacing bar, is 3.8 mm.

In a preferred embodiment of the screen of the piston pusher centrifuge, there are at least two pairs of the limiting strips, which are respectively disposed at the head and tail ends of the screen strips.

In a preferred embodiment of the screen of the piston pusher centrifuge of the present invention, there are at least three pairs of the spacing bars, respectively located at the middle point and the head and tail ends of the screen bar.

The utility model provides a piston pushes away a preferred embodiment of material centrifuge screen cloth, the grating is not setting up a side of spacing strip still is equipped with wear resistant strip, wear resistant strip follows the diagonal setting of this side of grating.

Compared with the prior art, the utility model provides a the piston pushes away the material and is equipped with on the side of the ribbon butt joint with adjacent ribbon in the centrifuge screen cloth spacing can directly compress tightly the two butt during the installation, need not the adjustment clearance. And after the installation, as long as the sieve bars are not loosened, the gaps can not be changed, and the stable and high-quality work of the centrifugal machine is ensured.

Drawings

FIG. 1 is a schematic diagram of the configuration of screen bars in a pusher centrifuge screen;

FIG. 2 is a schematic view of a portion of a screen of a pusher centrifuge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Please refer to fig. 1 and fig. 2, which are schematic views of a part of the structure of a screen mesh formed by a single screen bar 2 and a plurality of screen bars 2 in a screen mesh 1 of a piston pusher centrifuge according to the present invention.

The screen bars 2 are of square strip-shaped structures, and are 60mm long, 3.5mm wide and 8mm high (the lengths in the attached drawings are reduced). On two side surfaces of the sieve bar 2, which are composed of long and high edges, limit strips 21 are arranged at the positions of the head end, the tail end and the middle point of the sieve bar along the height direction. The height of the limiting strips 21 is consistent with that of the screen bars 2, the width of the limiting strips is 2mm, and the thickness of the limiting strips is 0.15 mm. The width of the whole formed by the screen bars 2 and the limiting bars 21 is 3.8 mm.

When the device is arranged in the rotary drum, the device is arranged at an angle that the side face formed by the long side and the wide side is attached to the inner wall of the rotary drum and the length direction is parallel to the axial direction of the rotary drum. The side surfaces of the screen bars 2 provided with the limiting bars 21 are sequentially abutted and spliced to form a circle of the piston material-pushing centrifugal machine screen 1, and the piston material-pushing centrifugal machine screen 1 is paved on the inner wall of the whole rotary drum for multiple circles.

The side wall of the side wall, far away from the rotary drum, of the screen bar 2 is formed by long and wide edges, wear-resistant strips 22 are arranged along the diagonal line, the arrangement direction of the wear-resistant strips is matched with the rotation direction of the rotary drum, and lateral wear is reduced to a certain extent. The wear-resistant strips 22 are adhered to the screen strips 2 and the screen strips 2 are adhered to the rotary drum through adhesives.

The inner wall of the rotary drum can be further provided with a supporting structure which is adhered to the two ends of the screen bars 2 in the length direction, so that the screen bars are more stable in arrangement.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. The utility model provides a piston pushes away material centrifuge screen cloth, includes many grate bars that set up side by side, its characterized in that: the two side surfaces of the screen bars, which are close to the adjacent screen bars, are provided with limiting bars, and the limiting bars on the two sides are consistent in structure and are symmetrically arranged; the length of the limiting strips is smaller than half of the length of the screen bars, and the height of the limiting strips is smaller than or equal to the height of the screen bars.

2. The pusher centrifuge screen of claim 1, wherein: the length of the screen bar is 60mm or 120mm, the height of the screen bar is 8mm, and the width of the whole screen bar and the limiting bars on the two sides of the screen bar is 3.8 mm.

3. The pusher centrifuge screen of claim 1 or 2, wherein: at least two pairs of limiting strips are arranged at the head end and the tail end of the sieve strip respectively.

4. The pusher centrifuge screen of claim 3, wherein: at least three pairs of limiting strips are respectively arranged at the middle point and the head end and the tail end of the sieve strip.

5. The pusher centrifuge screen of claim 1 or 2, wherein: the side surface of the screen bar, which is not provided with the limiting strips, is also provided with wear-resistant strips, and the wear-resistant strips are arranged along the diagonal line of the side surface of the screen bar.

6. The pusher centrifuge screen of claim 1 or 2, wherein: the screen bars are made of ceramic or wear-resistant alloy materials.