CN113102091A

CN113102091A - High-efficient fixed sieve and supporting device

Info

Publication number: CN113102091A
Application number: CN202110518898.1A
Authority: CN
Inventors: 陈力; 李渊
Original assignee: Beijing Chinacoal Coal Preparation Technology Co ltd
Current assignee: Beijing Chinacoal Coal Preparation Technology Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-07-13

Abstract

The invention relates to a high-efficiency fixed sieve and a matching device thereof, which comprise a feeding device, a fixed sieve, an undersize receiving groove and a pre-sieve blanking device; the high-pressure water is used for dredging and preventing medium accumulation from causing blockage, and the feeding device is uniformly provided with a row of sieve plates to play a role in pre-medium removal; the fixed sieve is arranged behind the feeding device, after medium is removed in advance by the feeding device, the combined medium and clean coal enter the fixed sieve, and continue to advance under the impact of the combined medium flow, three rows and six rows of vertical slit sieve plates are arranged in the fixed sieve, when the combined medium flow passes through the fixed sieve, part of qualified medium leaks from the vertical slit sieve plates, enters the under-sieve material receiving groove and is guided into the combined medium barrel, the non-leaked combined medium enters the pre-sieve blanking device together with the clean coal, and is guided into the clean coal medium removing sieve for further medium removal, but as part of the medium flow enters the under-sieve, the driving force is weakened, coal accumulation possibly occurs in front of the fixed sieve, at the moment, the vibrating motor on the upper part of the high-efficiency fixed sieve is started, the fixed sieve performs short-time circular vibration, and quickly clears the coal on the sieve.

Description

High-efficient fixed sieve and supporting device

Technical Field

The invention relates to the field of screening equipment, in particular to a high-efficiency fixed screen and a matching device.

Background

Production systems in dense media coal preparation plants often have a stationary screen disposed between the dense media shallow slot classifier and the medium removal screen. In the production process, under the promotion of heavy-medium shallow slot sorter horizontal flow, a large amount of clean coal is smugglied secretly to qualified medium flow and is passed through the fixed sieve, because the velocity of flow is very fast, the time that the medium flow passes through the fixed sieve is very short, be difficult to all to leak down from the fixed sieve mesh, the problem that the effect of taking off the medium is poor, manufacturing cost is high appears, simultaneously, big clean coal is piled up in both sides before the fixed sieve easily, not only cause the clean coal to be difficult to the even entering screen that takes off the medium of full section, also can make the medium flow path through narrow, further reduce the effect of taking off.

Disclosure of Invention

In view of the above, the present invention is to provide an efficient fixed sieve and a supporting device thereof, which can rapidly unload the large cleaned coal on the sieve to the medium removing sieve and improve the recovery efficiency of the qualified medium.

The invention relates to an efficient fixed sieve and a matched device, which comprise a feeding device, a fixed sieve, an undersize receiving groove and a pre-sieve blanking device;

the feeding device comprises a groove body, sieve plates and high-pressure water interfaces, wherein the sieve plates are arranged at the top of the groove body, the high-pressure water interfaces are arranged on two sides of the groove body, the high-pressure water interfaces are externally connected with a high-pressure water path, one end of the groove body is a feeding hole, and the other end of the groove body is a discharging hole;

the fixed sieve comprises a sieve frame, a girder, a trabecula, support legs, a vertical seam sieve plate and a vibration motor, wherein the sieve frame is in a concave shape, two ends of the girder or the trabecula are respectively and fixedly connected with the inner sides of two opposite side plates of the sieve frame, the vibration motor is fixedly arranged on the girder, a plurality of support legs are arranged on the outer sides of the two opposite side plates of the sieve frame, the fixed sieve is fixedly arranged on a corresponding base through the support legs, the vertical seam sieve plate is obliquely arranged in the sieve frame, the higher side of the vertical seam sieve plate is arranged below a discharge port, and the lower side of the vertical seam sieve plate is arranged above a blanking device in front of the sieve;

the undersize receiving groove is arranged right below a vertical seam sieve plate of the fixed sieve;

the pre-screening blanking device comprises a blanking groove body and detachable guide grooves, wherein a plurality of detachable guide grooves are respectively arranged on two sides of the blanking groove body, and medium bodies are pre-installed in the guide grooves during detachment.

Furthermore, the under-sieve receiving trough is divided into a plurality of splitter boxes by partition plates, and the cross section of each partition plate is in a triangular shape with a small top and a large bottom.

Furthermore, a plurality of the vertical seam sieve plates are distributed in the sieve frame in three rows and six columns.

The principle and the beneficial effects of the invention are as follows: according to the efficient fixed sieve and the matching device, the feeding device is fixed in front of the discharge port of the heavy-medium shallow groove separator, high-pressure water re-spraying holes are respectively arranged on two sides of the groove body of the feeding device, blockage caused by medium accumulation is prevented through high-pressure water dredging, and a row of sieve plates are uniformly arranged on the feeding device to play a role in pre-medium removal; the fixed sieve is arranged behind the feeding device, after medium is removed in advance by the feeding device, the combined medium and clean coal enter the fixed sieve, and continue to advance under the impact of the combined medium flow, three rows and six rows of vertical slit sieve plates are arranged in the fixed sieve, when the combined medium flow passes through the fixed sieve, part of qualified medium leaks from the vertical slit sieve plates, enters the under-sieve material receiving tank and is guided into the medium combining barrel, the combined medium which does not leak enters the sieve front blanking device together with the clean coal, and is guided into the clean coal medium removing sieve for further medium removal, but as part of the medium flow enters the under-sieve, the driving force is weakened, coal accumulation possibly occurs in front of the fixed sieve, at the moment, the vibrating motor positioned at the upper part of the high-efficiency fixed sieve is started, the fixed sieve does short-time circular vibration, the fixed sieve performs auxiliary discharging, and quickly empti.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from the drawings without inventive effort:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of an efficient fixed screen feeding apparatus;

FIG. 3 is a left side view of the high efficiency fixed screen feeding apparatus;

FIG. 4 is a top view of an efficient fixed screen feeding apparatus;

FIG. 5 is a front view of a high efficiency stationary screen;

FIG. 6 is a left side view of the high efficiency stationary screen;

FIG. 7 is a top view of a high efficiency fixed screen;

FIG. 8 is a front view of the undersize receiving bin;

FIG. 9 is a left side view of the undersize receiving bin;

FIG. 10 is a top view of the undersize catcher;

FIG. 11 is a front view of the pre-screen doffer;

FIG. 12 is a front screen doffer left view;

FIG. 13 is a top view of the pre-screen doffer;

the reference numbers are as follows: (10) -feeding device, (11) -trough body, (12) -sieve plate, (13) -high pressure water interface, (20) -fixed sieve, (21) -sieve frame, (22) -crossbeam, (23) -trabecula, (24) -support, (25) -vertical seam sieve plate, (30) -under-sieve receiving trough, (40) -pre-sieve blanking device, (41) -blanking trough body, and (42) -detachable type guiding trough.

Detailed Description

As shown in fig. 1-13: the high-efficiency fixed sieve (20) and the matching device thereof comprise a feeding device (10), the fixed sieve (20), an under-sieve receiving groove (30) and a pre-sieve blanking device (40);

the feeding device (10) comprises a groove body (11), sieve plates (12) and high-pressure water interfaces (13), wherein the sieve plates (12) are arranged at the top of the groove body (11), the high-pressure water interfaces (13) are arranged on two sides of the groove body (11), the high-pressure water interfaces (13) are externally connected with high-pressure water paths, one end of the groove body (11) is a feeding hole, the other end of the groove body (11) is a discharging hole, and the high-pressure water interfaces (13) are used for placing; the sieve plate (12) is arranged along a guide rail pre-installed on the feeding device (10), the inclined planes on the two sides are respectively provided with three blocks, the horizontal plane in the middle is provided with six blocks, medium flow pre-medium removal is achieved, the high-pressure water ports (13) are respectively arranged on the two sides of the groove body (11) of the feeding device (10) of the high-efficiency fixed sieve (20), and when the medium is accumulated, the medium is used, and medium powder accumulated on the lower portion of the sieve plate (12) can be rapidly removed.

The fixed sieve (20) comprises a sieve frame (21), a girder (22), a small beam (23), support legs (24), a vertical seam sieve plate (25) and a vibrating motor, the sieve frame (21) is in a concave shape, two ends of the girder (22) or the small beam (23) are respectively fixedly connected with the inner sides of two opposite side plates of the sieve frame (21), the vibrating motor is fixedly arranged on the girder (22), a plurality of support legs (24) are arranged on the outer sides of the two opposite side plates of the sieve frame (21), the fixed sieve (20) is fixedly arranged on a corresponding base through the support legs (24), inclined rail seats are preset on two sides of the sieve frame (21), the vertical seam sieve plate (25) is obliquely arranged on the rail seats of the sieve frame (21), the higher side of the vertical seam sieve plate (25) is arranged below a discharge port, and the lower side of the vertical seam sieve plate (25) is arranged above a pre-sieve blanking device (40); when medium flows pass through the vertical seam sieve plate (25), the medium can be leaked through the sieve seam to effectively recover the medium, the vibration motor is arranged on the crossbeam (22), when clean coal is accumulated on the vertical seam sieve plate (25) to affect medium removal, the vibration motor is started, the auxiliary medium flow pushes the clean coal to move forwards and leave the sieve surface, and the vibration can also accelerate medium passing through the sieve and assist the medium removal.

The undersize receiving groove (30) is arranged right below a vertical seam sieve plate (25) of the fixed sieve (20), the undersize receiving groove (30) is divided into a plurality of shunting grooves by a partition plate, and the cross section of the partition plate is in a triangular shape with a small upper part and a large lower part, so that a medium can be uniformly guided out to the medium combining barrel conveniently, and the abrasion loss is reduced;

doffer (40) include blanking cell body (41) and dismantlement formula baffle box before the sieve, and the both sides of blanking cell body (41) set up a plurality of dismantlement formula baffle boxes respectively, and the pre-installation has the medium body in the baffle box during the dismantlement, because the medium stream is serious to equipment wear, and a large amount of media are piled up to dismantlement formula baffle box (42) cell body (11) internal medicine, offset the impact of medium stream, and the wearing and tearing that slow down when wearing and tearing are serious, but quick assembly disassembly, the change of being convenient for.

In the embodiment, a plurality of vertical seam screen plates (25) are distributed in the screen frame (21) in three rows and six columns.

According to the efficient fixed sieve (20) and the matching device, the feeding device (10) is fixed in front of the discharge port of the heavy-medium shallow groove separator, high-pressure water re-spraying holes are respectively arranged on two sides of the groove body (11) of the feeding device (10), blockage caused by medium accumulation is prevented through high-pressure water dredging, and a row of sieve plates (12) are uniformly arranged on the feeding device (10) to achieve a pre-medium removal effect; the fixed sieve (20) is arranged behind the feeding device (10), after medium is removed in advance by the feeding device (10), combined medium and clean coal enter the fixed sieve (20), and continue to advance under the impact of combined medium flow, three rows of six rows of vertical seam sieve plates (25) are arranged in the fixed sieve (20), when the combined medium flow passes through the fixed sieve (20), part of qualified medium leaks from the vertical seam sieve plates (25) to enter a material receiving groove (30) under the sieve and is guided into a combined medium barrel, the combined medium which does not leak enters a blanking device (40) before the sieve along with the clean coal to be guided into the clean coal medium removing sieve for further medium removal, but because part of medium flow entering under the sieve, the driving force is weakened, coal accumulation possibly occurs before the sieve of the fixed sieve (20), at the moment, a vibration motor positioned at the upper part of the high-efficiency fixed sieve (20) is started, the fixed sieve (20) performs short-time circular vibration, auxiliary discharging is performed, the accumulated coal on the sieve surface is quickly emptied.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a high-efficient fixed sieve and supporting device which characterized in that: comprises a feeding device, a fixed sieve, an under-sieve receiving trough and a pre-sieve blanking device;

the fixed sieve comprises a sieve frame, a girder, a trabecula, support legs, a vertical seam sieve plate and a vibrating motor, wherein the sieve frame is in a concave shape, two ends of the girder or the trabecula are respectively and fixedly connected with the inner sides of two opposite side plates of the sieve frame, the vibrating motor is fixedly arranged on the girder, a plurality of support legs are arranged on the outer sides of the two opposite side plates of the sieve frame, the fixed sieve is fixedly arranged on a corresponding base through the support legs, a plurality of vertical seam sieve plates are obliquely arranged in the sieve frame, the higher side of each vertical seam sieve plate is arranged below a discharge port, and the lower side of each vertical seam sieve plate is arranged above a blanking device in front of the sieve;

2. The efficient fixed screen and the matching device as claimed in claim 1, wherein: the under-sieve receiving trough is divided into a plurality of splitter boxes by partition plates, and the cross section of each partition plate is in a triangular shape with a small top and a large bottom.

3. The efficient fixed screen and the matching device as claimed in claim 1, wherein: the plurality of the vertical seam sieve plates are distributed in the sieve frame in three rows and six columns.