CN217314321U

CN217314321U - Powder multistage filter sieve

Info

Publication number: CN217314321U
Application number: CN202220704566.2U
Authority: CN
Inventors: 贺建平; 陈小洋; 贺予潇
Original assignee: Sanmenxia Yuying New Material Co ltd
Current assignee: Sanmenxia Yuying New Material Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-30
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a powder multistage filter sieve relates to powder screening instrument technical field, including screening subassembly, feed inlet, the last aperture that supplies the powder to pass through that is equipped with of screening subassembly, the screening subassembly is the heliciform in vertical direction, the screening subassembly includes first screening groove, second screening groove, third screening groove below is equipped with connects the silo, first screening groove, second screening groove, third screening groove, the junction that connects the silo are equipped with the baffle, the bottom in first screening groove, second screening groove, third screening groove is equipped with the diameter and reduces in proper order the aperture, first screening groove, second screening groove, third screening groove, the lower extreme that connects the silo all are equipped with the export. The utility model is used for the screening of materials such as zirconia powder can replace electronic screening equipment such as sieve that shakes soon, solves the problem that powder screening process energy consumption is higher, the noise is big.

Description

Powder multistage filter sieve

Technical Field

The utility model relates to a powder screening tool technical field specifically is a powder multistage filter sieve.

Background

In the production process of the zirconia powder, the raw material crushing, coarse grinding, screening, fine grinding and other processes are generally needed, wherein the screening process is to classify the particles after coarse grinding, the coarse grinding is carried out again after the larger particles are mixed with the crushed raw material, the fine grinding is carried out on the smaller particles according to the grade of 2-4 according to the particle size, and the rapid separation is mainly carried out through equipment such as a rotary vibration screen at present.

The electric screening equipment such as the rotary vibration screen has the advantages of high automation degree and suitability for continuous production, but has the defects of high power consumption and high noise compared with the traditional screening groove screening mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the powder multistage filter sieve is provided, and electric drive and vibration parts are not needed, so that the problems of power consumption and high noise of electric sieving equipment are solved.

The utility model adopts the technical scheme as follows:

the utility model provides a multistage filter sieve of powder, includes screening subassembly, feed inlet, be equipped with the aperture that supplies the powder to pass through on the screening subassembly, the screening subassembly is the heliciform in vertical direction, the screening subassembly includes first screening groove, second screening groove, third screening groove below is equipped with connects the silo, first screening groove, second screening groove, third screening groove, connect the silo along vertical direction fixed connection in proper order, feed inlet fixed mounting is in the highest point in first screening groove, second screening groove, third screening groove, the junction that connects the silo are equipped with the baffle, the bottom in first screening groove, second screening groove, third screening groove is equipped with the aperture, the aperture diameter of the aperture on first screening groove, second screening groove, third screening groove reduces in proper order, first screening groove, second screening groove, The third screening groove, connect the lowermost extreme of silo all to be equipped with the export.

Preferably, the ratio of the pitch of the screen assemblies to their outer diameter is not less than 1: 4.

Preferably, flow guide grooves are arranged below the first screening groove and the second screening groove, and the movement directions of powder in the flow guide grooves and the powder in the screening assemblies are opposite.

Preferably, the diversion trench is spiral, the pitch of the diversion trench is equal to that of the screening assembly, and the number of turns of the diversion trench is not less than 1/3 turns.

Preferably, the outside that connects the silo is equipped with the support frame, the support frame includes stabilizer blade, a supporting beam fixed mounting connects the outside of silo, the stabilizer blade is installed in a supporting beam's below.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) the utility model discloses a heliciform screening subassembly utilizes gravity to make the powder fall down naturally, and the powder is in the process of along screening subassembly motion, by first screening groove, second screening groove, third screening groove screening, makes great granule discharge respectively from the export of first screening groove, second screening groove, third screening groove lower extreme, and less granule gets into the screening groove of below through the aperture and sieves once more, until all powders all discharge from the export of first screening groove, second screening groove, third screening groove, material receiving groove, sieve the powder into a plurality of grades according to the particle size; in the screening process, the power of powder motion comes from the gravity of the powder and the kinetic energy when the powder enters the feed inlet, electric energy drive is not needed, and a vibration part is not needed, so that the energy consumption of screening equipment is greatly saved, and the noise in the screening process is reduced;

(2) the below of screening subassembly is equipped with the guiding gutter, can lead the middle part of screening subassembly with the nearer powder of screening subassembly export to the movement distance of extension powder improves the screening effect.

Drawings

Fig. 1 is a perspective view of embodiment 1.

Fig. 2 is a perspective view of embodiment 2.

The labels in the figure are: 1. a screen assembly; 2. a feed inlet; 3. a small hole; 4. an outlet; 5. a diversion trench; 6. a support frame; 101. a first screening tank; 102. a second screening tank; 103. a third screening tank; 104. a material receiving groove; 105. a partition plate; 601. a support leg; 602. and supporting the beam.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings and embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

Example 1

As shown in the figure, the present embodiment provides a multistage filter sieve for powder, which is used for screening refractory powder such as zirconia, yttria, etc., and includes a screen assembly 1 and a feed port 2, where the screen assembly 1 is spiral in the vertical direction and has 4 circles, the screen assembly 1 includes a first screening groove 101, a second screening groove 102, and a third screening groove 103, a receiving groove 104 is provided below the third screening groove 103, the first screening groove 101, the second screening groove 102, the third screening groove 103, and the receiving groove 104 have the same shape and are fixedly connected in sequence along the vertical direction, a partition plate 105 is provided at the connection position, the feed port 2 is fixedly installed at the highest position of the first screening groove 101 and is used for inputting powder to be screened into the screen assembly 1, small holes 3 for powder to pass through are provided at the bottoms of the first screening groove 101, the second screening groove 102, and the third screening groove 103, and the first screening groove 101, the second screening groove 102, and the third screening groove 103 are provided with small holes 3 for powder to pass through The diameters of the small holes 3 on the third screening groove 103 are sequentially reduced, specifically, the diameters of the small holes 3 are respectively 1mm, 500 μm and 100 μm, and the lowest ends of the first screening groove 101, the second screening groove 102, the third screening groove 103 and the receiving groove 104 are respectively provided with an outlet 4 which is respectively communicated with different collecting containers for discharging and collecting powder materials with different particle sizes.

In order to prevent the powder from splashing when entering the screening assembly 1, a cover is arranged at the outlet of the feeding hole 2 and used for blocking the splashed powder.

In order to provide a sufficient slope in the bottom of screen assembly 1 to facilitate downward movement of the powder under gravity, the ratio of the pitch of screen assembly 1 to its outer diameter should be no less than 1:4, which in this embodiment is 1:4, and in addition, should not be greater than 2:1, to avoid excessive slope causing the powder to move too fast to be discharged from outlet 4 without having time to pass through the screen.

Receiving tank 104's outside is equipped with support frame 6 for support screen assembly 1, and support frame 6 includes stabilizer blade 601, a supporting beam 602, and supporting beam 602 is the heliciform to fixed mounting is in receiving tank 104's outside, as the fulcrum of stabilizer blade 601, makes stabilizer blade 601 install the below at supporting beam 602.

When the powder screening machine works, powder to be screened is fed from a feeding hole 2, the powder passes through the first screening groove 101, in the process that the powder moves in the first screening groove 101, the powder with the diameter not larger than 1mm passes through the small hole 3 at the bottom of the first screening groove 101 and enters the second screening groove 102, and the powder with the diameter larger than 1mm moves to the lowest part of the first screening groove 101 and is discharged from an outlet 4 communicated with the first screening groove 101; the powder entering the second screening groove 102 continues to move downwards along a spiral route, the powder with the diameter not more than 500 mu m passes through the small holes 3 at the bottom of the second screening groove 102 and enters the third screening groove 103, and the powder with the diameter more than 500 mu m moves to the lowest part of the second screening groove 102 and is discharged from an outlet 4 communicated with the second screening groove 102; the powder entering the third screening groove 103 continues to move downwards along a spiral route, the powder with the diameter of not more than 100 microns passes through the small hole 3 at the bottom of the third screening groove 103 and enters the receiving groove 104, the powder with the diameter of more than 100 microns moves to the lowest part of the third screening groove 103 and is discharged from an outlet 4 communicated with the third screening groove 103, and the powder entering the receiving groove 4 is discharged from an outlet 4 communicated with the third screening groove 103; through the process, the powder is divided into 4 grades of more than 1mm, 500 mu m-1 mm, 100 mu m-500 mu m and less than or equal to 100 mu m, and the grades are respectively put into different containers for temporary storage.

Example 2

In general, since powder particles continuously pass through the small holes 3, the amount of the powder in the first sieving tank 101, the second sieving tank 102 and the third sieving tank 103 is gradually reduced along with the reduction of the height, when the powder moves to the lower half parts of the first sieving tank 101 and the second sieving tank 102, the amount of the powder particles which can pass through the small holes 3 is already extremely small, but after the powder particles pass through the small holes 3, the moving distance in the sieving tank below is short, particularly, the powder particles which pass through the small holes 3 from the vicinity of the outlet 4 do not have enough moving distance, so that the powder particles which should pass through the small holes 3 are discharged from the outlet 4, and the sieving effect of the powder particles is influenced.

To solve the problem, on the basis of embodiment 1, a diversion trench 5 is arranged below a first screening trench 101 and a second screening trench 102, as shown in the figure, the diversion trench 5 is spiral and opposite to the spiral direction of the screening assembly 1, the screw pitch is equal, so that the powder moving directions in the diversion trench 5 and the screening assembly 1 are opposite, the number of turns of the diversion trench 5 is not less than 1/3, in this embodiment, the number of turns of the diversion trench 5 is 1/2, so that the powder particles entering the diversion trench 5 enter the middle part of the lower screening trench, thereby ensuring that the powder particles in the part can move at least 1/2 turns in the lower screening trench, and allowing the powder particles supposed to fall through the small holes 3 to pass through the small holes 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multistage filter screen for powder comprises a screen assembly (1) and a feed inlet (2), wherein small holes (3) for powder to pass through are formed in the screen assembly (1), and the multistage filter screen is characterized in that the screen assembly (1) is spiral in the vertical direction, the screen assembly (1) comprises a first screening groove (101), a second screening groove (102) and a third screening groove (103), a material receiving groove (104) is formed below the third screening groove (103), the first screening groove (101), the second screening groove (102), the third screening groove (103) and the material receiving groove (104) are fixedly connected in sequence in the vertical direction, the feed inlet (2) is fixedly installed at the highest position of the first screening groove (101), and partition plates (105) are arranged at the joints of the first screening groove (101), the second screening groove (102), the third screening groove (103) and the material receiving groove (104), the bottom in first screening groove (101), second screening groove (102), third screening groove (103) is equipped with aperture (3), the diameter of aperture (3) on first screening groove (101), second screening groove (102), third screening groove (103) reduces in proper order, first screening groove (101), second screening groove (102), third screening groove (103), connect the lowermost extreme of silo (104) all to be equipped with export (4).

2. The multi-stage filter screen for powders according to claim 1, characterized in that the ratio of the pitch of the screen assembly (1) to its outer diameter is not less than 1: 4.

3. The multistage filter sieve for powder lot of claim 2, wherein flow guide grooves (5) are arranged below the first screening groove (101) and the second screening groove (102), and the powder lot in the flow guide grooves (5) and the screening assemblies (1) move in opposite directions.

4. The multistage filter sieve for powder lot of claim 3, wherein the diversion trench (5) is spiral, the pitch of the diversion trench (5) is equal to that of the screening assembly (1), and the number of turns of the diversion trench (5) is not less than 1/3.

5. The multistage filter screen for powder lot as claimed in any one of claims 1 to 4, wherein a support frame (6) is arranged outside the receiving trough (104), the support frame (6) comprises support legs (601) and a support beam (602), the support beam (602) is fixedly installed outside the receiving trough (104), and the support legs (601) are installed below the support beam (602).