CN112427298A

CN112427298A - Energy-saving vibrating screen with two-stage screening function

Info

Publication number: CN112427298A
Application number: CN202011273967.9A
Authority: CN
Inventors: 张坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-14
Filing date: 2020-11-14
Publication date: 2021-03-02

Abstract

The invention relates to the technical field of material screening, in particular to an energy-saving two-stage screening vibrating screen; the technical scheme is as follows: the first sieve plate is horizontally arranged, a first discharge chute is arranged below the first sieve plate, the first discharge chute inclines along the length direction of the first sieve plate, and the first sieve plate can rotate along the central line of the length direction of the first sieve plate so as to drive the first sieve plate to swing through a driver; first blown down tank below level is equipped with the second sieve that extends along first sieve length direction, the mesh number of first sieve is greater than the mesh number of second sieve, second sieve each side is equipped with the second and keeps off the material arch, the second sieve can be followed first sieve length direction's central line and rotated to the material drive second sieve swing that drops through first sieve side. The invention can realize two-stage screening of materials by only driving one vibrating screen plate to vibrate by one driver, and has the characteristics of high screening efficiency and low energy consumption.

Description

Energy-saving vibrating screen with two-stage screening function

Technical Field

The invention relates to the technical field of material screening, in particular to an energy-saving type two-stage screening vibrating screen.

Background

The vibrating screen mainly comprises a vibrating motor, a vibration exciter, a screen plate and a frame, wherein the motor enables an eccentric block of the vibration exciter to rotate at a high speed through a triangular belt or a coupler, the eccentric block which runs through generates centrifugal force to excite the screen plate to generate motion with certain amplitude, the material is subjected to impulse transmitted by the screen plate on an inclined screen surface to generate continuous throwing motion, particles smaller than screen holes in the process that the material and the screen surface meet penetrate through the screen and large particles stay on the screen surface, and therefore screening of the material is achieved.

However, the existing vibrating screen can only perform the first screening, and for the materials needing two-stage screening, the materials are usually screened by two vibrating screens, or the materials are screened by combining two vibrating screens driven by a motor. Therefore, to realize two-stage screening, the two vibrating screens are driven by the motor to vibrate, so that the screening efficiency is low, and the screening energy consumption is high.

Disclosure of Invention

Aiming at the technical problems of low screening efficiency and high screening energy consumption in the existing two-stage material screening; the invention provides an energy-saving two-stage screening vibrating screen, which can realize two-stage screening of materials only by driving a vibrating screen plate to vibrate through a rotary driver and has the characteristics of high screening efficiency and low energy consumption.

The invention is realized by the following technical scheme:

an energy-saving vibrating screen with two-stage screening comprises a rack, a first screen plate and a driver, wherein the first screen plate is horizontally arranged, each side of the first screen plate is provided with a first material blocking bulge, a first discharge chute is arranged below the first screen plate, the first discharge chute is inclined along the length direction of the first screen plate, and the first screen plate can rotate along the central line of the length direction of the first screen plate so as to drive the first screen plate to swing through the driver; first blown down tank below level is equipped with the second sieve that extends along first sieve length direction, the mesh number of first sieve is greater than the mesh number of second sieve, second sieve each side all is equipped with the second and keeps off the material arch, the second sieve can be followed first sieve length direction's central line and rotated to the material drive second sieve swing that drops through first sieve side.

When the material feeding device is used, materials are fed on the first sieve plate through the material feeding device, and the driver is started to drive the first sieve plate to swing through the driver, so that particles smaller than sieve pores of the first sieve plate penetrate through the sieve and large particles of the materials stay on the sieve surface, and primary sieving is realized; the material passing through the first sieve plate is collected through the first material collecting groove. The first material blocking bulge can block materials on the first sieve plate so as to ensure that the materials can be subjected to full primary screening; when the material height of piling up at first sieve is higher than first fender material protruding, then fall in the both sides of second sieve in turn from first sieve length direction's both sides to drive the swing of second sieve, thereby make be less than the second sieve mesh and be greater than the granule of first sieve mesh pass through the sieve and the material of big granule stops on the sifter, realizes the second grade screening. Similarly, the second material blocking bulge can block the materials on the second sieve plate so as to ensure that the materials can be subjected to sufficient secondary screening; when the height of the materials stacked on the second sieve plate is higher than that of the second blocking protrusion, the materials fall off from two sides of the second sieve plate in the length direction. Therefore, the invention can realize two-stage screening of materials by only driving one vibrating screen plate to vibrate by one driver, and has the characteristics of high screening efficiency and low energy consumption.

In order to collect the materials passing through the second sieve plate conveniently, a second discharge chute is obliquely arranged below the second sieve plate.

As a specific embodiment of the second discharging chute, the cross section of the second discharging chute is an inverted trapezoid to prevent the material falling from the side edge of the second sieve plate from falling into the second discharging chute to affect the sieving of the material.

Preferably, the width of first blown down tank is less than first sieve, and the width of second sieve is greater than the width of first sieve to prevent that the material that drops from first sieve side from falling into in the first blown down tank and influence the screening of material.

For further preventing that the material that drops from first sieve side falls into first blown down tank, first sieve length direction's both sides all are equipped with the first swash plate of downward sloping, first swash plate one side is protruding articulated with first fender material, the other side of first swash plate extends outside the length direction's of first blown down tank lateral wall.

In order to collect the material that drops from the second sieve side for convenient, the both sides of first sieve all are equipped with the third blown down tank, the slope of second sieve length direction is followed to the third blown down tank to collect the material that the second sieve side dropped through the third blown down tank.

In order to ensure that the material that drops from the second sieve side slides into the third blown down tank, the both sides of second sieve length direction all are equipped with the second swash plate of downward sloping, second swash plate one side is protruding articulated with the second, the other side of second swash plate extends to the third blown down tank top.

As a specific implementation manner for driving the first sieve plate to swing, the driver is a driving motor, the driving motor is provided with a driving disc, the driving disc is hinged to one end of a driving rod, the other end of the driving rod is hinged to one side of the first sieve plate in the length direction, and the driving disc, the driving rod and the first vibrating sieve form a crank-rocker mechanism.

Furthermore, the height of the first sieve plate is adjustable, so that the height of the first sieve plate is adjusted according to the density of the materials, and the materials falling from the side edge of the first sieve plate can drive the second sieve plate to swing.

As a specific implementation mode of the height-adjustable first sieve plate, the first sieve plate and the driver are both installed on the connecting frame, a plurality of connecting holes are vertically formed in the connecting frame, and fixing holes matched with the connecting holes are formed in the rack so as to pass through the connecting holes and the fixing hole fixing and connecting frame through bolts.

The invention has the beneficial effects that:

1. the first sieve plate is driven to swing through the driver, so that particles smaller than sieve pores of the first sieve plate pass through the sieve, large-particle materials stay on the sieve surface, primary sieving is realized, and the materials passing through the first sieve plate are collected through the first material collecting groove; the particles smaller than the sieve pores of the second sieve plate and larger than the sieve pores of the first sieve plate pass through the sieve and the large-particle materials stay on the sieve surface, so that the secondary sieving of the materials can be realized;

2. the first material blocking bulge can block materials on the first sieve plate so as to ensure that the materials can be subjected to full primary screening;

3. the second material blocking bulge can block materials on the second sieve plate so as to ensure that the materials can be subjected to sufficient secondary screening;

4. the second sieve plate is driven to swing by the materials from the first sieve plate, so that two-stage sieving of the materials can be realized by driving one vibrating sieve plate to vibrate through one rotary driver, and the invention has the characteristics of high sieving efficiency and low energy consumption.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Reference numbers and corresponding part names in the drawings:

1-a rack, 2-a first sieve plate, 3-a driver, 4-a first material blocking bulge, 5-a first discharge chute, 6-a second sieve plate, 7-a second material blocking bulge, 8-a second discharge chute, 9-a first inclined plate, 10-a third discharge chute, 11-a second inclined plate, 13-a driving rod and 14-a connecting frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1

An energy-saving vibrating screen with two-stage screening comprises a rack 1, a first screen plate 2 and a driver 3, wherein the first screen plate 2 is horizontally arranged, each side of the first screen plate is provided with a first material blocking bulge 4, a first discharge chute 5 is arranged below the first screen plate 2, the first discharge chute 5 inclines along the length direction of the first screen plate 2, and the first screen plate 2 can rotate along the central line of the length direction of the first screen plate 2 so as to drive the first screen plate 2 to swing through the driver 3; the 5 below levels of first blown down tank are equipped with the second sieve 6 that extends along 2 length direction of first sieve, the mesh number of first sieve 2 is greater than the mesh number of second sieve 6, 6 each sides of second sieve all are equipped with the second and keep off protruding 7 of material, 2 length direction's of first sieve central line rotation can be followed to second sieve 6 to the material drive second sieve 6 swing that drops through 2 sides of first sieve.

It will be appreciated that the swinging movement of the first screening deck 2 may be driven by a linear drive, or may be driven by a rotary drive, such as by a linkage hinged to the drive end of the linear drive, whereby movement driven by the linear drive causes the first screening deck 2 to swing. In order to ensure that the first screen plate 2 has a sufficient oscillating frequency, in this example, the driver 3 is a driving motor, the driving motor is provided with a driving disc, the driving disc is hinged to one end of a driving rod 13, the other end of the driving rod 13 is hinged to one side of the first screen plate 2 in the length direction, and the driving disc, the driving rod 13 and the first vibrating screen form a crank-rocker mechanism.

The working principle of the embodiment is as follows:

when the material screening device is used, a material is thrown on the first sieve plate 2 through the material throwing device, and the driver 3 is started to drive the first sieve plate 2 to swing through the driver 3, so that particles smaller than sieve pores of the first sieve plate 2 pass through the sieve, and large-particle materials stay on the sieve surface, and primary screening is realized; the material passing through the first sieve plate 2 is collected through the first material collecting groove.

The first material blocking bulges 4 can block materials on the first sieve plate 2 so as to ensure that the materials can be subjected to sufficient primary sieving; when piling up the material height of first sieve 2 and being higher than first fender material arch 4, then drop in the both sides of second sieve 6 in turn from the both sides of 2 length direction of first sieve to drive 6 swings of second sieve, thereby the granule that makes to be less than 6 sieve meshes of second sieve and be greater than 2 sieve meshes of first sieve passes through the sieve and the material of big granule stops on the sifting surface, realizes the second grade and sieves.

Similarly, the second material blocking bulge 7 can block the materials on the second sieve plate 6 to ensure that the materials can be subjected to sufficient secondary sieving; when the height of the materials stacked on the second sieve plate 6 is higher than that of the second material blocking protrusion 7, the materials fall off from two sides of the second sieve plate 6 in the length direction.

In order to collect the materials passing through the second sieve plate 6 conveniently, a second discharging groove 8 is obliquely arranged below the second sieve plate 6.

As a specific embodiment of the second discharging chute 8, the cross section of the second discharging chute 8 is an inverted trapezoid to prevent the material falling from the side of the second sieve plate 6 from falling into the second discharging chute 8 and affecting the sieving of the material.

Preferably, the width of first blown down tank 5 is less than first sieve 2, and the width of second sieve 6 is greater than the width of first sieve 2 to prevent that the material that drops from first sieve 2 side from falling into first blown down tank 5 and influencing the screening of material.

Example 2

Based on the embodiment 1, the two sides of the first sieve plate 2 in the length direction are respectively provided with a first inclined plate 9 which inclines downwards, one side of the first inclined plate 9 is hinged with the first material blocking bulge 4, the other side of the first inclined plate 9 extends out of the side wall of the first discharge chute 5 in the length direction, so as to further prevent the material falling from the side edge of the first sieve plate 2 from falling into the first discharge chute 5,

example 3

Based on embodiment 1 and/or 2, the both sides of first sieve 2 all are equipped with third blown down tank 10, third blown down tank 10 inclines along 6 length direction of second sieve to collect the material that 6 sides of second sieve dropped through third blown down tank 10, so that collect the material that drops from 6 sides of second sieve.

In order to further ensure that the materials falling from the side edge of the second sieve plate 6 slide into the third discharge chute 10, the two sides of the second sieve plate 6 in the length direction are respectively provided with a second inclined plate 11 inclining downwards, one side of the second inclined plate 11 is hinged with the second protrusion, and the other side of the second inclined plate 11 extends to the position above the third discharge chute 10.

Example 4

Based on any one of the above-mentioned embodiments, the height of the first screening deck 2 is adjustable, so as to adjust the height of the first screening deck 2 according to the density of the materials, thereby ensuring that the materials falling from the side edge of the first screening deck 2 can drive the second screening deck 6 to swing.

It will be appreciated that the height of the first screening deck 2 may be adjusted by means of pneumatic/hydraulic cylinders fixed to the frame 1, or by means of lead screws. In this embodiment, for the reliability of guaranteeing that first sieve 2 is connected with frame 1, first sieve 2 and driver 3 are all installed on link 14, the vertical a plurality of connecting holes that are equipped with on link 14, be equipped with the fixed orifices with the connecting hole adaptation in the frame 1 to cross connecting hole and fixed orifices fixed connection frame 14 through the bolt.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The energy-saving vibrating screen with two-stage screening comprises a rack (1), a first screen plate (2) and a driver (3), and is characterized in that the first screen plate (2) is horizontally arranged, first material blocking protrusions (4) are arranged on each side of the first screen plate (2), a first discharge chute (5) is arranged below the first screen plate (2), the first discharge chute (5) is inclined along the length direction of the first screen plate (2), and the first screen plate (2) can rotate along the central line of the length direction of the first screen plate (2) so as to drive the first screen plate (2) to swing through the driver (3);

first blown down tank (5) below level is equipped with second sieve (6) that extend along first sieve (2) length direction, the mesh number of first sieve (2) is greater than the mesh number of second sieve (6), second sieve (6) each side all is equipped with the second and keeps off protruding (7) of material, first sieve (2) length direction's central line rotation can be followed in second sieve (6) to material drive second sieve (6) swing that drops through first sieve (2) side.

2. An energy saving two stage screening vibrating screen according to claim 1, characterised in that a second discharge chute (8) is provided obliquely below the second screening deck (6).

3. An energy efficient two stage screening shaker as claimed in claim 1, characterized in that the second discharge chute (8) is of inverted trapezoidal cross section.

4. An energy efficient two stage screening shaker as claimed in claim 1, characterized in that the width of the first discharge chute (5) is smaller than the width of the first screening deck (2) and the width of the second screening deck (6) is larger than the width of the first screening deck (2).

5. The energy-saving type two-stage screening vibrating screen according to claim 4, wherein two sides of the first screen plate (2) in the length direction are provided with first inclined plates (9) which incline downwards, one side of each first inclined plate (9) is hinged with the first material blocking bulge (4), and the other side of each first inclined plate (9) extends out of the side wall of the first discharge chute (5) in the length direction.

6. An energy saving two stage screening vibrating screen according to claim 1, characterised in that both sides of the first screening deck (2) are provided with third discharge chutes (10), and the third discharge chutes (10) are inclined along the length direction of the second screening deck (6) to collect the material falling from the side of the second screening deck (6) through the third discharge chutes (10).

7. An energy saving two stage screening vibrating screen according to claim 6, characterized in that the second screen plate (6) is provided with second inclined plates (11) inclined downwards on both sides in the length direction, one side of the second inclined plates (11) is hinged with the second protrusions, and the other side of the second inclined plates (11) extends to above the third discharge chute (10).

8. The energy-saving type vibrating screen with two-stage screening according to claim 1, characterized in that the driver (3) is a driving motor, the driving motor is provided with a driving disk, the driving disk is hinged with one end of a driving rod (13), the other end of the driving rod (13) is hinged with one side of the first screen plate (2) in the length direction, and the driving disk, the driving rod (13) and the first vibrating screen form a crank-rocker mechanism.

9. An energy efficient two stage screening shaker as claimed in claim 1, characterized in that the height of the first screening deck (2) is adjustable.

10. An energy-saving two-stage screening vibrating screen according to claim 9, characterized in that the first screen plate (2) and the driver (3) are both mounted on a connecting frame (14), a plurality of connecting holes are vertically arranged on the connecting frame (14), and the frame (1) is provided with fixing holes adapted to the connecting holes so as to fix the connecting frame (14) through the connecting holes and the fixing holes by bolts.