CN111014027A

CN111014027A - Sieve plate structure of screening tower

Info

Publication number: CN111014027A
Application number: CN201911384399.7A
Authority: CN
Inventors: 余瑞昌; 夏文浩; 李利慧; 夏新甲
Original assignee: Shenhua Yuedian Zhuhai Port Coal Terminal Co ltd
Current assignee: Shenhua Yuedian Zhuhai Port Coal Terminal Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-04-17

Abstract

The invention aims to provide a sieve plate structure of a screening tower, which has high safety, good stability and good screening effect, is not easy to generate clamping stagnation, and is not easy to drop. The sieve plate is of a downward inclined structure from one end far away from a discharge port to one end close to the discharge port, the fixing component is installed on the inner wall of a sieve tower in a matched mode, the sieve plate is arranged on the fixing component, the sieve plate and the fixing component are detachably connected, a plurality of sieve holes and a plurality of first threaded holes distributed along the periphery of the sieve plate are formed in the sieve plate, the distance between every two adjacent sieve holes is gradually reduced along the direction far away from the center of the sieve plate, and the fixing component comprises a pressing plate fixed on the inner wall of the sieve tower, a second threaded hole formed in the pressing plate and a bolt matched with the first threaded hole and the second threaded hole. The invention is applied to the technical field of sieve plate structures.

Description

Sieve plate structure of screening tower

Technical Field

The invention relates to the technical field of sieve plate structures, in particular to a sieve plate structure of a screening tower.

Background

The raw coal is produced from coal mines, which is not washed, screened and processed but only manually picked to remove gangue and sundries. Through screening, the obtained screening data is an important basis for reasonably utilizing coal resources and formulating the quality standard of coal products, and the screening is a method for grading coal samples according to the granularity by adopting sieves with different apertures, wherein the coal samples larger than the size of the sieve apertures are all remained on the surface of the sieve, and the coal samples smaller than the size of the sieve apertures are all fallen through the sieve apertures, so that the grading purpose is achieved. However, in the screening process of the existing screening tower equipment, due to the reasons of vibration of the vibrating screen, aging of polyurethane and the like, the condition that the screen plate or the blind plate falls off can occur in the screening process, and the condition that part of the screen plate, the blind plate and the rail seat fall off in a concentrated manner after being used for a certain time, so that the operation efficiency is influenced, and the risk of damage to a downstream belt is increased.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a sieve plate structure of a screening tower, which has high safety, good stability and good screening effect, is not easy to generate clamping stagnation and is not easy to fall.

The technical scheme adopted by the invention is as follows: the sieve plate is of a downward inclined structure from one end far away from a discharge port to one end close to the discharge port, the fixing component is installed on the inner wall of a sieve tower in a matched mode, the sieve plate is arranged on the fixing component, the sieve plate and the fixing component are detachably connected, a plurality of sieve holes and a plurality of first threaded holes distributed along the periphery of the sieve plate are formed in the sieve plate, the distance between every two adjacent sieve holes is gradually reduced along the direction far away from the center of the sieve plate, and the fixing component comprises a pressing plate fixed on the inner wall of the sieve tower, a second threaded hole formed in the pressing plate and a bolt matched with the first threaded hole and the second threaded hole.

Further, the sieve mesh include the round hole and communicate in the through-hole of terminal surface under the round hole, the round hole with the center of through-hole is in same vertical on-line, the aperture of round hole remains the unanimity from top to bottom throughout, the aperture of through-hole is gradually big structure from top to bottom's direction.

Furthermore, the number of the pressing plates is at least two, the pressing plates are arranged at two ends of the inner wall of the screening tower in a row, each pressing plate comprises two supporting plates which are of an upper structure and a lower structure, and the end faces of the supporting plates, which are in contact with the screen plates, are of inclined structures matched with the screen plates.

Furthermore, a reinforcing plate is arranged on the pressing plate, and the reinforcing plate and the pressing plate are of an integrally formed structure.

Furthermore, the bolt is provided with an external thread matched with the first threaded hole and the second threaded hole, and the bolt penetrates through the pressing plate and the sieve plate along the direction from top to bottom.

Further, the corner of sieve is fillet column structure, this fillet column structure with the inner wall of screening tower is laminated mutually.

The invention has the following beneficial effects:

1. in the process that raw coal product particles pass through the screening plate, the clamping stagnation phenomenon is not easy to occur;

2. the screening plate is fixed in a manner of combining the pressing plate with the threads instead of the installation manner that the screening plate is inserted into the slot, so that the screening plate is not easy to fall off;

3. the bolts penetrate through the upper supporting plate and the screening plate and are in threaded connection with the supporting plate and the screening plate, so that the upper supporting plate and the bolts have bearing capacity on the screening plate, and the screening plate is not easy to fall off;

4. the pressing plate and the reinforcing plate are integrally formed, so that the bearing capacity and the equipment stability are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the sieve plate structure of a sieving tower of the present invention;

FIG. 2 is a schematic structural view of a sieve plate structure of a sieving tower of the present invention;

figure 3 is a schematic view of the structure of the screen holes in the screen deck structure of a screening tower according to the invention.

In the figure, 1-sieve plate, 2-discharge port, 3-sieving tower, 4-sieve hole, 5-first threaded hole, 6-pressing plate, 7-bolt, 8-round hole, 9-through hole, 10-supporting plate and 11-reinforcing plate.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

As shown in fig. 1 to 3, in the present embodiment, the present invention includes a screen plate 1 and a fixing assembly, the screen plate 1 is in a downward inclined structure from an end far away from a discharge hole 2 to an end close to the discharge hole 2, the fixed component is arranged on the inner wall of the screening tower 3 in a matching way, the screen plate 1 is arranged on the fixed component, the sieve plate 1 is detachably connected with the fixed component, the sieve plate 1 is provided with a plurality of sieve holes 4 and a plurality of first threaded holes 5 distributed along the periphery of the sieve plate 1, the distance between every two adjacent sieve holes 4 is gradually reduced along the direction far away from the center of the sieve plate 1, the fixing assembly comprises a pressing plate 6 fixed on the inner wall of the screening tower 3, a second threaded hole formed in the pressing plate 6 and a bolt 7 matched with the first threaded hole 5 and the second threaded hole.

According to the scheme, the screening plate is slidably inserted into the slot by the traditional screening equipment, the slot is easily damaged and the screening plate or the slot falls off in the vibration screening process due to the fact that a gap exists between the slot and the screening plate, namely no fixing measure is provided for the screening plate, in the device, the screening plate 1 is placed on the fixing component, then the bolt 7 penetrates through the first threaded hole 5 and the second threaded hole to fix the screening plate 1 on the fixing component, so that the screening plate 1 can be fixed in the fixing component, the service life is greatly prolonged, raw coal products with different particle sizes fall down from the position right above the screening plate 1 and preferentially contact with the middle part of the screening plate 1, and the middle part can bear more raw coal products due to the sparse space between the screen holes 4 in the middle part of the screening plate 1, the raw coal products slide down along the obliquely arranged sieve plate 1 in a vibration mode, and the distance between the sieve holes 4 along the direction of the discharge hole 2 is gradually reduced, so that more raw coal products can be sieved, and the sieving result is more ideal; in this design, sieve 1 adopts the wear-resisting steel material of HADOX, compares for ordinary steel with traditional screening board material, and this scheme sieve 1's life is longer.

As shown in fig. 3, in a preferred embodiment, the sieve pore 4 includes a circular hole 8 and a through hole 9 communicating with a lower end surface of the circular hole 8, centers of the circular hole 8 and the through hole 9 are on the same vertical line, a diameter of the circular hole 8 is always consistent from top to bottom, and a diameter of the through hole 9 is gradually larger from top to bottom, in this design, a diameter of the circular hole 8 is consistent with a diameter of an upper end surface of the through hole 9; the round holes 8 are matched with corresponding raw coal product particles.

According to the scheme, raw coal products fall into the sieve plate 1, and raw coal product particles with certain sizes sequentially pass through the round holes 8 and the through holes 9; raw coal product granule is passing the in-process of sieve mesh 4 appears slight upset easily, and its upset changes the horizontal length of raw coal product granule whereabouts process, and this horizontal length is too big leads to raw coal product granule jamming to be in the sieve mesh 4, through the aperture of through-hole 9 from top to bottom direction is gradually big structure for raw coal product granule is less in the aperture the line footpath of round hole 8 is little, is difficult for appearing the jamming phenomenon.

As shown in fig. 1, a preferable scheme is that the number of the pressing plates 6 is at least two, at least two pressing plates 6 are arranged at two ends of the inner wall of the sieving tower 3, each pressing plate 6 comprises two supporting plates 10 in an up-and-down structure, and the end surfaces of the supporting plates 10, which are in contact with the sieve plate 1, are in an inclined structure matched with the sieve plate 1; a reinforcing plate 11 is arranged on the pressing plate 6, and the reinforcing plate 11 and the pressing plate 6 are in an integrated structure; the bolt 7 is provided with an external thread matched with the first threaded hole 5 and the second threaded hole, and the bolt 7 penetrates through the pressing plate 6 and the sieve plate 1 from top to bottom.

According to the scheme, the bolt 7 sequentially penetrates through the supporting plate 10 above, the sieve plate 1 and the supporting plate 10 below, and the bolt 7 is in threaded connection with the supporting plate 10 above and below and the sieve plate 1, so that the bearing capacity of the sieve plate 1 is increased, and the sieve plate 1 is prevented from falling; the reinforcing plate 11 with clamp plate 6 integrated into one piece increases the stability of equipment and right the bearing capacity of sieve 1 further prevents sieve 1 drops.

One preferred scheme is, the corner of sieve 1 is fillet column structure, this fillet column structure with the inner wall of screening tower 3 is laminated mutually.

According to the scheme, due to the arrangement of the round-angle-shaped structure, the sieve plate 1 is not easy to scratch when being taken, and safety accidents are reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. The utility model provides a screening tower sieve plate structure which characterized in that: it comprises a sieve plate (1) and a fixing component, wherein the sieve plate (1) is of a downward inclined structure from one end far away from a discharge hole (2) to the direction close to one end of the discharge hole (2), the fixed component is arranged on the inner wall of the screening tower (3) in a matching way, the screen plate (1) is arranged on the fixed component, the sieve plate (1) is detachably connected with the fixed component, a plurality of sieve holes (4) and a plurality of first threaded holes (5) distributed along the periphery of the sieve plate (1) are formed in the sieve plate (1), the distance between every two adjacent sieve holes (4) is gradually reduced along the direction far away from the center of the sieve plate (1), the fixing assembly comprises a pressing plate (6) fixed on the inner wall of the screening tower (3), a second threaded hole formed in the pressing plate (6) and a bolt (7) matched with the first threaded hole (5) and the second threaded hole.

2. A screening tower screen deck structure according to claim 1, wherein: sieve mesh (4) include round hole (8) and communicate in through-hole (9) of terminal surface under round hole (8), round hole (8) with the center of through-hole (9) is in same vertical line, the aperture of round hole (8) from top to bottom remains the unanimity throughout, the aperture of through-hole (9) from top to bottom direction is gradually big structure.

3. A screening tower screen deck structure according to claim 1, wherein: the quantity of clamp plate (6) is at least two, at least two clamp plate (6) branch is listed as on the both ends of screening tower (3) inner wall, clamp plate (6) include two layer boards (10) that are structure from top to bottom, with sieve (1) contacts layer board (10) terminal surface be with the slope structure of sieve (1) looks adaptation.

4. A screening tower screen deck structure according to claim 1, wherein: the pressure plate (6) is provided with a reinforcing plate (11), and the reinforcing plate (11) and the pressure plate (6) are of an integrally formed structure.

5. A screening tower screen deck structure according to claim 1, wherein: be equipped with on bolt (7) with first screw hole (5) with the external screw thread of second screw hole looks adaptation, bolt (7) are along passing from top to bottom the clamp plate (6) with sieve (1).

6. A screening tower screen deck structure according to claim 1, wherein: the corner of sieve (1) is fillet column structure, this fillet column structure with the inner wall of screening tower (3) is laminated mutually.