CN215695804U - Sieve plate and sieving machine - Google Patents

Abstract

The application discloses a sieve plate, which comprises a frame, a fixed frame arranged in the frame and a plurality of sieve bars arranged in the frame at intervals, wherein the sieve bars are movably connected with the fixed frame; the screen bars are provided with beating rods, the length of each beating rod is larger than the distance between every two adjacent screen bars, the beating rods on the two adjacent screen bars are arranged in a staggered mode, and when the screen bars move, the beating rods can swing around the central axis of the screen bars and beat the adjacent screen bars. The application also discloses a screening machine. This application strikes the stick and strikes adjacent grating each other through knocking, can avoid the material to block up between the grating.

Description

Sieve plate and sieving machine

Technical Field

The application relates to the technical field of coal dressing equipment, in particular to a sieve plate and a sieve machine.

Background

In a concentrating mill and a coal preparation plant, grading equipment is commonly used for enrichment of material concentrates or convenient subsequent operation and treatment. One of the most common classification devices is the screen machine. The screening machine can separate according to the granularity of the materials.

The sieve plate is generally adopted to separate materials in the existing sieving machine, and the sieve plate commonly used at present has the problem of easy blockage, so that the problems of low sieving efficiency and poor sieving effect are caused.

Therefore, a sieve plate and a sieve machine capable of avoiding blockage need to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a purpose aim at overcomes prior art's is not enough, provides a sieve and sieving machine, strikes adjacent grating each other through knocking the stick, can avoid the material to block up between the grating.

The technical scheme of the application provides a sieve plate, which comprises a frame, a fixed frame arranged in the frame and a plurality of sieve bars arranged in the frame at intervals, wherein the sieve bars are movably connected with the fixed frame;

beating rods are arranged on the screen bars, the length of each beating rod is larger than the distance between every two adjacent screen bars, and the beating rods on the two adjacent screen bars are arranged in a staggered mode;

when the screen bars move, the beating rods can swing around the central axis of the screen bars and beat the adjacent screen bars.

Preferably, be equipped with the mounting hole on the mount, the mounting hole is the round hole, the diameter of mounting hole is greater than the diameter of grating, the grating runs through the mounting hole just the outer wall of grating with the inner wall of mounting hole has the clearance to make the grating can rotate in the mounting hole and rock.

Preferably, be equipped with the mounting hole on the mount, the mounting hole is waist shape hole, the length direction in waist shape hole and perpendicular to the plane of arranging of grating, the diameter in waist shape hole with the diameter of grating is the same, the length in waist shape hole is greater than the diameter of grating, the grating can waist shape hole internal rotation just can be followed the length direction in waist shape hole slides.

Preferably, two fixing frames are arranged in the frame, and the length of the screen bar is greater than the length between the two fixing frames and less than the length between the two opposite inner walls of the frame.

Preferably, the mount includes first support body and second support body, be equipped with first half hole on the first support body, be equipped with second half hole on the second support body, first support body with the concatenation of second support body makes first half hole with second half hole concatenation forms together the mounting hole.

Preferably, the surface of the knocking rod is coated with an elastic coating layer.

Preferably, the length of the beating rod is 1.5 times of the distance between two adjacent screen bars.

Preferably, the screen bar further comprises a reinforcing beam arranged along the length direction of the screen bar, and two ends of the reinforcing beam are fixedly connected with the inner wall of the frame respectively.

The utility model also discloses a screening machine which comprises a vibrating device and the screening plate, wherein the vibrating device is connected with the screening plate and drives the screening plate to vibrate.

Preferably, the vibrating device is a linear reciprocating mechanism, and the driving direction of the linear reciprocating mechanism is perpendicular to the axial direction of the screen bars.

After adopting above-mentioned technical scheme, have following beneficial effect:

this application sieve beats the stick and can rotate around the grating at the during operation for beat the stick and beat adjacent grating, make the grating can vibrate, avoid the material jam between the grating, thereby improve screening efficiency and screening effect.

Drawings

The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

figure 1 is a schematic view of the construction of a screen panel in one embodiment of the utility model;

FIG. 2 is a schematic view of the rapping bar rapping adjacent screen bars in one embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the holder of one embodiment of the present invention;

fig. 4 is a schematic structural view of a fixing frame according to another embodiment of the present invention.

Reference symbol comparison table:

frame 1: the device comprises a cavity 10, a transverse plate 11 and a longitudinal plate 12;

a fixing frame 2: the mounting hole 20, the first half hole 201, the second half hole 202, the first frame body 21 and the second frame body 22;

a screen bar 3;

a knock-out bar 4.

Detailed Description

Embodiments of the present application are further described below with reference to the accompanying drawings.

It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.

The utility model discloses a sieve plate in some embodiments, as shown in fig. 1, which comprises a frame 1, a fixed frame 2 arranged in the frame 1 and a plurality of sieve bars 3 arranged in the frame 1 at intervals, wherein the sieve bars 3 are movably connected with the fixed frame 2;

beating rods 4 are arranged on the screen bars 3, the length of each beating rod 4 is larger than the distance between every two adjacent screen bars 3, and the beating rods 4 on the two adjacent screen bars 3 are arranged in a staggered mode.

When the screen bars 3 are active, the rapping bars 4 can oscillate around the central axis of the screen bars 3 and rap the adjacent screen bars 3.

In this device, when carrying out the material separation to different particle sizes, the material falls into to the sieve on, and the sieve drives the vibration through external mechanism when using for the less material of granule can be followed and passed through between the adjacent grating 3, and the great granule of granule can not be through adjacent grating 3, thereby can realize the effect with the material separation of different particle sizes. Wherein, when the sieve drives the swing and the grating 3 rotation of beating rod 4 in the in-process of vibration, beat rod 4 and can wind the central axis rotary swing of grating 3, and beat rod 4 and can beat adjacent grating 3, and then make grating 3 can receive the power of beating, even when the material card is between grating 3, also can beat through beating rod 4 on the adjacent grating 3 to grating 3 and make grating 3 receive the power of beating and then make the material of card on grating 3 can break away from grating 3, avoid the material to block up on the sieve, improve screening efficiency and screening effect. In addition, even the screen bars 3 have taken place small deformation in the use and lead to the material card between the screen bars 3, because beat the stick 4 and can beat the screen bar 3 and make the material of card on the screen bar 3 separate, also need not to change the screen bar 3 that warp at once and also can continue to use even if the screen bar 3 takes place small deformation to improve the life of sieve.

In some embodiments of the present invention, as shown in fig. 3, the fixing frame 2 is provided with a mounting hole 20, the mounting hole 20 is a circular hole, the diameter of the mounting hole 20 is larger than the diameter of the screen band 3, the screen band 3 penetrates through the mounting hole 20, and a gap is formed between the outer wall of the screen band 3 and the inner wall of the mounting hole 20, so that the screen band 3 can rotate and rock in the mounting hole 20.

Specifically, when the screen plate vibrates, because the screen bars 3 and the mounting holes 20 have gaps therebetween, the screen bars 3 can axially rock back and forth or radially rock in the mounting holes 20, and meanwhile, the screen bars 3 can rotate around the axes of the screen bars 3. The minimum distance between the two screen bars 3 is larger than the diameter of the material to be passed through, and the maximum distance between the two screen bars 3 is required to be smaller than the diameter of the material to be separated and the length of the beating rod 4.

In other embodiments of the present invention, as shown in fig. 4, the fixing frame 2 is provided with a mounting hole 20, the mounting hole 20 is a slotted hole, the length direction of the slotted hole is perpendicular to the arrangement plane of the screen bars 3, the diameter of the slotted hole is the same as the diameter of the screen bars 3, the length of the slotted hole is greater than the diameter of the screen bars 3, and the screen bars 3 can rotate in the slotted hole and can slide along the length direction of the slotted hole.

When mounting hole 20 is waist shape hole, the sieve is in the vibration, and the grating 3 can rotate around its self axis, and the grating 3 can slide along the length direction in waist shape hole simultaneously, and the interval between adjacent grating 3 can not change promptly, and when grating 3 received beating of beating rod 4 beat, the grating 3 can slide along the length direction in waist shape hole to avoid the material jam between adjacent grating 3.

In some embodiments of the utility model, two holders 2 are arranged in the frame 1, and the length of the screen band 3 is greater than the length between the two holders 2 and less than the length between the two opposite inner walls of the frame 1.

Specifically, as shown in fig. 1, the frame 1 is composed of a longitudinal plate 12 and a transverse plate 11, the screen bars 3 are parallel to the transverse plate 11 and are arranged along the length direction of the frame 1, the fixing frames 2 are parallel to the longitudinal plate 12, two ends of the fixing frame 2 are respectively connected to the two transverse plates 11, at least two fixing frames 2 are arranged in the frame 1, the two fixing frames 2 are respectively arranged at two sides of the frame 1 close to the longitudinal plate 12, the fixing frames 2 and the longitudinal plate 12 are separated to form a cavity 10, the length of the screen bars 3 is smaller than the distance between the two longitudinal plates 12, and is longer than the length between the two fixed frames 2, the end part of the screen bar 3 penetrates through the mounting hole 20 on the fixed frame 2 and goes deep into the cavity 10, so that the screen bar 3 can slide along the axial direction of the mounting hole 20, when in use, the vibration of the screen bars 3 can be further enhanced, so that the material can be prevented from being clamped on the adjacent screen bars 3.

Alternatively, more than two fastening frames 2 can also be arranged in the frame 1, with a plurality of fastening frames 2 arranged parallel to one another. Specifically, one more fixing frame 2 can be additionally arranged at the center line position of the transverse plate 11 to improve the support of the screen bars 3 and avoid deformation. Or two fixing frames 2 are symmetrically arranged by taking the central line of the transverse plate 11 as the central line to improve the support of the screen bars 3.

Alternatively, the screen bars 3 are arranged in the width direction of the frame 1, i.e. the screen bars 3 are arranged parallel to the longitudinal plates 12 and the fixing frame 2 is parallel to the transverse plates 11.

In some embodiments of the present invention, as shown in fig. 3 and 4, the fixing frame 2 includes a first frame body 21 and a second frame body 22, a first half-hole 201 is formed on the first frame body 21, a second half-hole 202 is formed on the second frame body 22, and the first frame body 21 and the second frame body 22 are assembled together such that the first half-hole 201 and the second half-hole 202 are assembled together to form the mounting hole 20.

When installing the grating 3, pack into first support body 21 to frame 1 earlier, pack into first half hole 201 with grating 3 again in, splice second support body 22 and first support body 21 together again at last for first half hole 201 and the half hole 202 of second are pieced together and are formed mounting hole 20, can be easy to assemble grating 3 through this kind of structure.

Preferably, the both ends of first support body 21 respectively with frame 1's inner wall welded fastening together, second support body 22 links together with first support body 21 detachably, after the grating 3 takes place seriously to warp, only need dismantle the separation with second support body 22 and first support body 21 and can change grating 3, need not to destroy whole sieve and disassemble or whole change.

Optionally, set up first screw on the first support body 21, set up the second screw on the second support body 22, first screw and second screw are coaxial to realize that first support body 21 and second support body 22 splice together through bolt and first screw and second screw threaded connection, only need can separate first support body 21 and second support body 22 with the bolt that loosens when needing to be changed grating 3.

In some embodiments of the utility model, the surface of the tapping rod 4 is coated with an elastic coating. Specifically, through carrying out the rubber coating on the surface of beating stick 4 and handling and form the elasticity coating, can play the protection through the elasticity coating and beat the effect of stick 4 and grating 3, avoid beating stick 4 and grating 3 and strike for a long time and lead to warping, can strengthen the dynamics and the elasticity of beating simultaneously. In particular, the elastic coating is made of a thermoplastic elastomer.

In some embodiments of the utility model, the length of the rapping bar 4 is 1.5 times the spacing between two adjacent screen bars 3. This ensures that the rapping bar 4 can rap the adjacent screen bars 3 while swinging.

In some embodiments of the present invention, the screen bar further comprises a reinforcing beam arranged along the length direction of the screen bar 3, and two ends of the reinforcing beam are respectively fixedly connected with the inner wall of the frame 1.

Specifically, the stiffening beam is parallel with the screen band 3, can strengthen the bulk strength of sieve through setting up the stiffening beam.

This application is when using, the material that the granule differs falls into the upper surface of sieve, the sieve vibration makes the material vibration of sieve upper surface in order to sieve, wherein, the diameter of the less material of granule is less than the interval between the 3 adjacent grizzly strips, make the less material of granule pass through the sieve, the diameter of the more material of granule is greater than the interval between the 3 adjacent grizzly strips, make the more material of granule can not pass through the sieve, thereby the realization separates the material of different granule sizes. Wherein, at the in-process of sieve vibration, because strike stick 4 and swing to the bottom of beating adjacent grating 3 around grating 3 under the inertia effect of self, make grating 3 receive ascending strike power, thereby make the material of card between grating 3 break away from under the effect of the power of striking, the jam of sieve has been avoided, grating 3 also can follow the axial at vibration in-process self and make a round trip to slide and radially rock simultaneously, can enough improve screening efficiency, also can avoid blockking up.

The utility model also discloses a screening machine which comprises the vibrating device and the screening plate, wherein the vibrating device is connected with the screening plate and drives the screening plate to vibrate.

When screening, the material falls into to on the sieve, the sieve drives the vibration under vibrating device's effect, make the material can vibrate on the sieve, the diameter of the material of small granule is less than the interval between adjacent grating 3, make the material of small granule can pass through adjacent grating 3, the diameter of the material of big granule is greater than the interval between adjacent grating 3, make the material of big granule can not pass through adjacent grating 3, thereby the realization is with the effect of the material screening of big granule and small granule. In addition, when the sieve is in the vibration, beat excellent 4 and swing around the grating 3 and beat adjacent grating 3 to the material that will block between grating 3 can loosen, avoids blockking up.

In some embodiments of the utility model the vibrating device is a linear reciprocating mechanism, the driving direction of which is perpendicular to the axial direction of the screen bars 3. The linear reciprocating mechanism drives the sieve plate to do linear reciprocating motion, and meanwhile, in the action process of the sieve plate, the beating rod 4 swings around the sieve bars 3 under the action of inertia and beats the adjacent sieve bars 3.

What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims (10)

1. A sieve plate is characterized by comprising a frame (1), a fixed frame (2) arranged in the frame (1) and a plurality of sieve bars (3) arranged in the frame (1) at intervals, wherein the sieve bars (3) are movably connected with the fixed frame (2);

beating rods (4) are arranged on the screen bars (3), the length of each beating rod (4) is larger than the distance between every two adjacent screen bars (3), and the beating rods (4) on the two adjacent screen bars (3) are arranged in a staggered mode;

when the screen bars (3) move, the knocking rods (4) can swing around the central axis of the screen bars (3) and knock the adjacent screen bars (3).

2. The screen deck according to claim 1, characterized in that the fixing frame (2) is provided with mounting holes (20), the mounting holes (20) are round holes, the diameter of the mounting holes (20) is larger than the diameter of the screen bars (3), the screen bars (3) penetrate through the mounting holes (20), and the outer walls of the screen bars (3) and the inner walls of the mounting holes (20) have a gap so that the screen bars (3) can rotate and rock in the mounting holes (20).

3. The screen deck according to claim 1, characterized in that the fixing frame (2) is provided with mounting holes (20), the mounting holes (20) are slotted holes, the length direction of the slotted holes is perpendicular to the arrangement plane of the screen bars (3), the diameter of the slotted holes is the same as the diameter of the screen bars (3), the length of the slotted holes is greater than the diameter of the screen bars (3), and the screen bars (3) can rotate in the slotted holes and can slide along the length direction of the slotted holes.

4. A screening deck according to claim 2 or 3, characterized in that two holders (2) are arranged in the frame (1), the length of the screen band (3) being greater than the length between the two holders (2) and less than the length between the opposite inner walls of the frame (1).

5. The screen panel as claimed in claim 2 or 3, wherein the fixing frame (2) comprises a first frame body (21) and a second frame body (22), a first half hole (201) is formed in the first frame body (21), a second half hole (202) is formed in the second frame body (22), and the first frame body (21) and the second frame body (22) are spliced together to form the mounting hole (20).

6. The screen panel as claimed in claim 1, characterised in that the surface of the rapping bar (4) is coated with an elastic coating.

7. The screen deck according to claim 1, characterized in that the length of the rapping bar (4) is 1.5 times the spacing between two adjacent screen bars (3).

8. The screen deck according to claim 1, further comprising a reinforcing beam arranged along the length direction of the screen bars (3), wherein both ends of the reinforcing beam are fixedly connected with the inner wall of the frame (1).

9. A screening machine comprising a screen panel as claimed in any one of claims 1 to 8 and vibrating means connected to the screen panel to vibrate the screen panel.

10. A machine according to claim 9, characterized in that the vibrating means is a linear reciprocating mechanism, the driving direction of which is perpendicular to the axial direction of the screen bars (3).

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