CN112193729A

CN112193729A - Coal seam thickness regulating and controlling device of clean coal online ash meter

Info

Publication number: CN112193729A
Application number: CN202011233329.4A
Authority: CN
Inventors: 杨洪占; 张天文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-01-08

Abstract

The invention discloses a coal seam thickness regulating device of a clean coal online ash meter, which comprises an online ash meter and two supports, wherein power rollers are arranged on the two supports, the two power rollers are connected through a conveying belt, a supporting plate is arranged between the conveying belts, the bottom of the supporting plate is fixedly connected with four supporting legs, the upper end of the supporting plate is fixedly connected with a tetrafluoro plate, the tetrafluoro plate is abutted against the bottom of the conveying belt, a U-shaped plate is fixedly connected onto the tetrafluoro plate, the online ash meter is arranged on the left side of the U-shaped plate, and two vertical plates are arranged between the U-shaped plates. The coal flow leveling device has a reasonable structure and a better coal flow leveling effect, so that the online ash meter can measure the thickness of the coal flow more accurately, the influence of uneven coal bed thickness on the measurement of clean coal ash content by the r-ray online ash meter can be effectively eliminated, the thickness of the coal flow leveling can be adjusted according to actual requirements, and the practicability is better.

Description

Coal seam thickness regulating and controlling device of clean coal online ash meter

Technical Field

The invention relates to the technical field of ash content detection of heavy medium clean coal products in a coal preparation plant, in particular to a coal seam thickness regulating and controlling device of a clean coal online ash meter.

Background

The most important and main product in the product varieties produced by coking coal preparation plants is the clean coal product, the clean coal product is generally formed by mixing a heavy medium clean coal product and a flotation clean coal product, and the heavy medium clean coal accounts for the most part of the final product. Whether the main product index of the heavy-medium clean coal product or the flotation clean coal product is clean coal ash, whether the clean coal product is qualified or not is mainly determined by the ash value, and for the detection of the clean coal product ash, an r-ray online ash detector is mainly adopted to carry out online real-time monitoring on the clean coal product ash, especially the ash value measurement of the heavy-medium clean coal product.

The influence factors of the r-ray online ash meter on the measurement of the ash content of the heavy-medium clean coal product are more, the measurement of the ash content of the heavy-medium clean coal by the r-ray online ash meter is influenced by the thickness of a coal bed, the moisture content of clean coal, the medium content of clean coal, the particle size of clean coal and the like, but in the production link of the heavy-medium process of a coal preparation plant, the production process parameters and the operation process parameters are fixed, the moisture content of the clean coal is stable, all heavy-medium clean coal products are dehydrated by a centrifuge, the moisture content of the clean coal after dehydration is stable, the influence on the measurement of the ash content of the clean coal by the r-ray online ash meter is fixed, and the influence can; in the daily production process of the heavy medium clean coal, the heavy medium is subjected to medium removal through a plurality of processes such as an arc screen, a vibrating screen, water spraying and the like, so that the medium carrying amount of the clean coal is almost negligible; and the particle size of the clean coal particles is basically kept unchanged under the condition that the properties of the raw coal are unchanged. In the daily production process, the fluctuation of the washing quantity is large, so that the output of the heavy-medium clean coal is fluctuated constantly, the thickness of the clean coal on the clean coal belt conveyor is fluctuated in real time, and the thickness of a clean coal seam on the belt conveyor is a main influence factor for measuring the ash content of the clean coal by an r-ray online ash meter.

The prior art discloses a coal seam thickness regulating device of a clean coal online ash meter with application number of CN201910871274.0, which comprises an inclined leveler, a left baffle and a right baffle, wherein the left baffle, the right baffle and the inclined leveler are arranged on a belt conveyor in sequence according to the incoming material direction, and the online ash meter is arranged behind the inclined leveler; the cleaned coal after washing processing falls on a belt conveyor through a chute, the coal flow is adjusted to the right side of the belt conveyor through a baffle, the coal flow is adjusted to the left side of the belt conveyor through a right baffle, the coal flow is regulated to the middle of the belt conveyor, the coal flow is leveled and tidy through an inclined leveler, the coal flow passing through the inclined leveler is guaranteed to be uniform in thickness, and the influence of uneven coal bed thickness on the ash content of the cleaned coal measured by an r-ray online ash meter is eliminated;

although the above patent publication solves the problem of inconsistent thickness of coal flow to some extent, the effect of leveling the thickness of coal flow is not good, and needs to be improved; secondly, the coal flow is set only through the left baffle and the right baffle, and the belt conveyor vibrates during working, so that the situation that the coal flow is blocked at the inclined leveler or the coal flow is separated from the belt conveyor possibly occurs, and the coal seam thickness regulating device of the clean coal online ash meter is designed to solve the problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a coal bed thickness regulating device of a clean coal online ash meter, which has a better effect of leveling a coal flow, so that the online ash meter can measure the thickness of the coal flow more accurately, the influence of uneven thickness of the coal bed on the ash content of clean coal measured by an r-ray online ash meter can be effectively eliminated, the thickness of the coal flow leveling can be adjusted according to actual requirements, and the practicability is better.

In order to achieve the purpose, the invention adopts the following technical scheme:

a coal seam thickness regulating device of a clean coal online ash measuring instrument comprises an online ash measuring instrument and two supports, wherein power rollers are respectively arranged on the two supports, the two power rollers are connected through a conveying belt, a supporting plate is arranged between the conveying belts, the bottom of the supporting plate is fixedly connected with four supporting legs, the upper end of the supporting plate is fixedly connected with a tetrafluoro plate, the tetrafluoro plate is abutted against the bottom of the conveying belt, a U-shaped plate is fixedly connected onto the tetrafluoro plate, the online ash measuring instrument is arranged on the left side of the U-shaped plate, two vertical plates are arranged between the U-shaped plates, a side plate is fixedly connected to one end of each vertical plate, which is opposite to the online ash measuring instrument, an adjusting mechanism is arranged between each vertical plate and the U-shaped plate, a leveling plate is arranged between the two vertical plates, an adjusting plate is arranged at the upper end of the leveling plate, and the leveling, be equipped with regulation and control mechanism between regulating plate and the U template, the levelling plate rotates with the one end of online ash meter looks mutually back and is connected with the baffle of slope, the first spring of fixedly connected with between baffle and the regulating plate, the both ends of levelling plate are equipped with telescopic U type pole, two the one end that U type pole was mutually the back mutually all offsets with the riser of homonymy.

Preferably, the online ash meter is arranged above the supporting plate and close to the U-shaped plate.

Preferably, adjustment mechanism includes two L type rectangular rods that carry on the back mutually fixed connection with two risers, two L type rectangular rod all runs through the U template and rather than sliding connection, two locating pieces of fixedly connected with on the U template, two run through respectively on the locating piece and be equipped with rather than rotate the first screw rod and the second screw rod of being connected, the one side fixed connection that first screw rod and second screw rod are relative, first screw rod and second screw rod run through the L type rectangular rod of homonymy respectively and rather than threaded connection, the second screw rod and the first hand wheel of one end fixedly connected with that first screw rod carried on the back mutually.

Preferably, the first screw and the second screw are connected by welding, and the thread directions of the first screw and the second screw are opposite.

Preferably, the self-adaptation piece comprises telescopic link and second spring, the both ends of telescopic link and second spring are equallyd divide respectively with levelling plate and regulating plate fixed connection, the second spring housing is in the outside of telescopic link.

Preferably, regulation and control mechanism including installing the bearing on the regulating plate, the inner ring fixedly connected with adjusting screw of bearing, adjusting screw's upper end runs through the U template and rather than threaded connection, adjusting screw's upper end fixedly connected with second hand wheel.

Preferably, the bottom of leveling plate is equipped with two sliding trays, the both ends of U type pole are installed respectively in two sliding trays and rather than sliding connection, the both ends of U type pole respectively with the homonymy between the sliding tray fixedly connected with third spring.

Preferably, the inner wall of sliding tray is equipped with the spacing groove, sliding connection has the stopper in the spacing groove, stopper and U type pole fixed connection.

Compared with the prior art, the invention has the beneficial effects that:

1. when the coal flows between two risers, can carry out the water conservancy diversion to the coal flow at edge through the curb plate, make it be difficult for breaking away from conveyor belt, can make the coal flow all through between two risers, so the coal flow condition that drops conveyor belt and jam can not appear takes place, guarantees that the coal flow normally carries.

2. The redundant clean coal can be pushed away through the baffle, finally, the coal flow can flow to the lower part of the leveling plate, and the coal flow can be leveled and has uniform thickness through the matching of the self-adaptive piece, the leveling plate, the supporting plate, the PTFE plate and the two vertical plates; when the coal stream of flattening breaks away from two risers, the coal stream of flattening this moment meets with online ash meter, and conveyor belt at this moment can not take place deformation under the support of backup pad, and then the coal stream that breaks away from the riser also can not stand immediately loosely, can effectively eliminate the influence that the uneven coal seam thickness measured clean coal ash content to the online ash meter of r ray.

3. When the coal flows at a large flow rate, a worker can manually rotate the first hand wheel, and the first screw rod and the second screw rod are opposite in thread direction, so that the L-shaped rectangular rod and the U-shaped plate cannot rotate, the first hand wheel can be rotated to rotate the first screw rod and the second screw rod, the two vertical plates can move back to back, the distance between the two vertical plates is increased, the two U-shaped rods move back to back under the action of the third spring, the coal flow rate is low, and vice versa; the practicability is good.

4. When the thickness of coal stream is controlled to needs, the staff can manually rotate the second hand wheel, and because the leveling plate can not rotate under the spacing of riser, consequently rotate the second hand wheel and can realize adjusting screw and rotate, can adjust the distance between regulating plate and leveling plate and the conveyor belt, can control the thickness of coal stream.

In conclusion, the coal flow leveling device has a reasonable structure and a better coal flow leveling effect, so that the online ash meter can measure the thickness of the coal flow more accurately, the influence of uneven coal bed thickness on the ash content of clean coal measured by the r-ray online ash meter can be effectively eliminated, the thickness of the coal flow leveling can be adjusted according to actual requirements, and the coal flow leveling device is better in practicability.

Drawings

FIG. 1 is a schematic structural diagram of a coal seam thickness regulating device of a clean coal on-line ash meter provided by the invention;

FIG. 2 is a schematic structural diagram of an adaptive part in a coal seam thickness regulating device of a clean coal on-line ash meter provided by the invention;

FIG. 3 is a side view of a part of the mechanism at the U-shaped plate in the coal seam thickness regulating device of the clean coal on-line ash meter provided by the invention;

FIG. 4 is a bottom view of a leveling plate in the coal seam thickness regulating device of the clean coal on-line ash meter provided by the invention;

FIG. 5 is a top view of a vertical plate in the coal seam thickness regulating device of the clean coal on-line ash meter provided by the invention.

In the figure: the device comprises a support 1, a power roller 2, a conveying belt 3, supporting legs 4, an online ash meter 5, a U-shaped plate 6, a vertical plate 7, a first hand wheel 8, an adjusting plate 9, a second hand wheel 10, a leveling plate 11, a self-adaptive part 12, an adjusting screw 13, a baffle 14, a bearing 15, a supporting plate 16, a tetrafluoro plate 17, a limiting block 18, a telescopic rod 19, a second spring 20, a first spring 21, a side plate 22, a rectangular rod 23L-shaped, a first screw 24, a positioning block 25, a second screw 26, a U-shaped rod 27, a sliding groove 28, a third spring 29 and a limiting groove 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-5, a coal seam thickness regulating device of a clean coal online ash meter comprises an online ash meter 5 and two supports 1, wherein the two supports 1 are respectively provided with a power roller 2, the two power rollers 2 are connected through a conveying belt 3, a supporting plate 16 is arranged between the conveying belts 3, and the supporting plate 16 spans across the conveying belts 3; the bottom of the supporting plate 16 is fixedly connected with four supporting legs 4, the upper end of the supporting plate 16 is fixedly connected with a tetrafluoro plate 17, the tetrafluoro plate 17 is abutted against the bottom of the conveying belt 3, and the friction force between the tetrafluoro plate 17 and the conveying belt 3 can be reduced; can support conveyor belt 3 through supporting leg 4, backup pad 16 and tetrafluoro board 17, and then realize the support to the coal flow for conveyor belt 3 can not take place deformation because of the weight that the coal flows, and the thickness to the coal flow flattening is even unanimous, and the effect is better.

Fixedly connected with U template 6 on the tetrafluoro board 17, online ash meter 5 installs in the left side of U template 6, and online ash meter 5 is located the top of backup pad 16, and online ash meter 5 is close to U template 6 and sets up, and so online ash meter 5 still measures the coal flow on backup pad 16 and after leveling.

Two vertical plates 7 are arranged between the U-shaped plates 6, side plates 22 are fixedly connected to one ends of the two vertical plates 7 opposite to the online ash measuring instrument 5, an adjusting mechanism is arranged between the two vertical plates 7 and the U-shaped plates 6 and comprises two L-shaped rectangular rods 23 fixedly connected with the opposite ends of the two vertical plates 7, the two L-shaped rectangular rods 23 penetrate through the U-shaped plates 6 and are in sliding connection with the U-shaped plates, two positioning blocks 25 are fixedly connected to the U-shaped plates 6, first screw rods 24 and second screw rods 26 in rotating connection with the positioning blocks 25 are respectively penetrated through the positioning blocks 25, one opposite surfaces of the first screw rods 24 and the second screw rods 26 are fixedly connected, the first screw rods 24 and the second screw rods 26 penetrate through the L-shaped rectangular rods 23 on the same side and are in threaded connection with the same side, and one end, opposite to the first screw rods 24, of the second; the first screw 24 and the second screw 26 are connected by welding, and the thread directions of the first screw 24 and the second screw 26 are opposite; because the L-shaped rectangular rod 23 and the U-shaped plate 6 cannot rotate, the first hand wheel 8 can be rotated to rotate the first screw rod 24 and the second screw rod 26, and the two vertical plates 7 can move oppositely or oppositely.

Be equipped with leveling plate 11 between two risers 7, leveling plate 11's upper end is equipped with regulating plate 9, is connected through a plurality of self-adaptation pieces 12 between leveling plate 11 and the regulating plate 9, and self-adaptation piece 12 comprises telescopic link 19 and second spring 20, and telescopic link 19 and second spring 20's both ends are equallyd divide respectively with leveling plate 11 and regulating plate 9 fixed connection, and second spring 20 cover can reciprocate according to coal flow self-adaptation in telescopic link 19's outside.

A regulating mechanism is arranged between the regulating plate 9 and the U-shaped plate 6, the regulating mechanism comprises a bearing 15 arranged on the regulating plate 9, an inner ring of the bearing 15 is fixedly connected with a regulating screw 13, the upper end of the regulating screw 13 penetrates through the U-shaped plate 6 and is in threaded connection with the U-shaped plate, and a second hand wheel 10 is fixedly connected to the upper end of the regulating screw 13 and can control the thickness of the measured coal flow.

An inclined baffle plate 14 is rotatably connected to one end, opposite to the online ash measuring instrument 5, of the leveling plate 11, a first spring 21 is fixedly connected between the baffle plate 14 and the adjusting plate 9, the baffle plate 14 can be supported through the first spring 21, and meanwhile, redundant clean coal can be removed through the baffle plate 14; both ends of levelling plate 11 are equipped with telescopic U type pole 27, the one end that two U type poles 27 carried on the back mutually all offsets with the riser 7 of homonymy, the bottom of levelling plate 11 is equipped with two sliding tray 28, install respectively at two sliding tray 28 at U type pole 27's both ends and rather than sliding connection, U type pole 27's both ends respectively with the sliding tray 28 of homonymy between fixedly connected with third spring 29, the inner wall of sliding tray 28 is equipped with spacing groove 30, sliding connection has stopper 18 in the spacing groove 30, stopper 18 and U type pole 27 fixed link, can guarantee the stable slip of U type pole 27.

In the invention, after coal flow falls on the conveying belt 3, the conveying of the conveying belt 3 can be realized through the power roller 2, when the coal flow passes between the two vertical plates 7, the coal flow at the edge can be guided through the side plate 22, so that the coal flow is not easy to separate from the conveying belt 3, the coal flow can completely pass between the two vertical plates 7, the coal flow can not fall off the conveying belt 3 and be blocked, and the normal conveying of the coal flow is ensured;

when the coal flow passes between the two vertical plates 7, redundant clean coal can be pushed away through the baffle plate 14, finally the coal flow can flow to the lower part of the leveling plate 11, and the coal flow can be leveled and has uniform thickness through the matching of the self-adaptive part 12, the leveling plate 11, the supporting plate 16, the tetrafluoro plate 17 and the two vertical plates 7; when the leveled coal flow is separated from the two vertical plates 7, the leveled coal flow meets the online ash detector 5, the conveying belt 3 cannot deform under the support of the supporting plate 16, and the coal flow separated from the vertical plates 7 cannot be immediately loosened, so that the influence of uneven coal seam thickness on the measurement of clean coal ash content of the r-ray online ash detector 5 can be effectively eliminated;

when the coal flow is large, a worker can manually rotate the first hand wheel 8, because the thread directions of the first screw 24 and the second screw 26 are opposite, and the L-shaped rectangular rod 23 and the U-shaped plate 6 cannot rotate, the first hand wheel 8 can be rotated to realize the rotation of the first screw 24 and the second screw 26, the two vertical plates 7 can move back to back, the distance between the two vertical plates 7 is increased, and the two U-shaped rods 27 move back to back under the action of the third spring 29, so that the coal flow is suitable for the coal flow with large flow, and when the coal flow is small, otherwise;

when the thickness of coal stream needs to be controlled, the staff can manually rotate the second hand wheel 10, and because the leveling plate 11 cannot rotate under the limit of the vertical plate 7, the rotation of the adjusting screw 13 can be realized by rotating the second hand wheel 10, the distance between the adjusting plate 9 and the leveling plate 11 and the conveying belt 3 can be adjusted, and the thickness of the coal stream can be controlled.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The coal bed thickness regulating device of the clean coal online ash measuring instrument comprises an online ash measuring instrument (5) and two supports (1), and is characterized in that power rollers (2) are mounted on the two supports (1), the two power rollers (2) are connected through a conveying belt (3), a supporting plate (16) is arranged between the conveying belts (3), four supporting legs (4) are fixedly connected to the bottom of the supporting plate (16), a tetrafluoro plate (17) is fixedly connected to the upper end of the supporting plate (16), the tetrafluoro plate (17) abuts against the bottom of the conveying belt (3), a U-shaped plate (6) is fixedly connected to the tetrafluoro plate (17), the online ash measuring instrument (5) is mounted on the left side of the U-shaped plate (6), two vertical plates (7) are arranged between the U-shaped plates (6), and a side plate (22) is fixedly connected to one ends of the vertical plates (7) and the online ash measuring instrument (5) back to each other, two be equipped with adjustment mechanism, two between riser (7) and U template (6) be equipped with leveling plate (11) between riser (7), the upper end of leveling plate (11) is equipped with regulating plate (9), be connected through a plurality of self-adaptation spare (12) between leveling plate (11) and regulating plate (9), be equipped with regulation and control mechanism between regulating plate (9) and U template (6), leveling plate (11) rotate with the one end of online ash detector (5) mutually backing mutually and are connected with baffle (14) of slope, fixedly connected with first spring (21) between baffle (14) and regulating plate (9), the both ends of leveling plate (11) are equipped with telescopic U type pole (27), two the one end that U type pole (27) carried on the back mutually all offsets with riser (7) of homonymy.

2. The coal seam thickness regulating and controlling device of the clean coal online ash meter is characterized in that the online ash meter (5) is positioned above a supporting plate (16), and the online ash meter (5) is arranged close to a U-shaped plate (6).

3. The coal seam thickness regulating and controlling device of the clean coal on-line ash meter according to claim 1, the adjusting mechanism comprises two L-shaped rectangular rods (23) fixedly connected with the opposite ends of the two vertical plates (7), the two L-shaped rectangular rods (23) both penetrate through the U-shaped plate (6) and are connected with the U-shaped plate in a sliding manner, two positioning blocks (25) are fixedly connected to the U-shaped plate (6), a first screw rod (24) and a second screw rod (26) which are rotatably connected with the two positioning blocks (25) are respectively arranged on the two positioning blocks (25) in a penetrating way, the opposite surfaces of the first screw rod (24) and the second screw rod (26) are fixedly connected, the first screw rod (24) and the second screw rod (26) respectively penetrate through the L-shaped rectangular rods (23) at the same side and are in threaded connection with the L-shaped rectangular rods, one end of the second screw rod (26) opposite to the first screw rod (24) is fixedly connected with a first hand wheel (8).

4. The coal seam thickness regulating device of the clean coal online ash meter is characterized in that the first screw (24) and the second screw (26) are connected through welding, and the thread directions of the first screw (24) and the second screw (26) are opposite.

5. The coal bed thickness regulating device of the clean coal online ash meter according to claim 1, characterized in that the adaptive part (12) is composed of a telescopic rod (19) and a second spring (20), two ends of the telescopic rod (19) and the second spring (20) are fixedly connected with the leveling plate (11) and the adjusting plate (9), respectively, and the second spring (20) is sleeved outside the telescopic rod (19).

6. The coal seam thickness regulating device of the clean coal online ash meter according to claim 1, characterized in that the regulating mechanism comprises a bearing (15) installed on a regulating plate (9), an inner ring of the bearing (15) is fixedly connected with a regulating screw (13), the upper end of the regulating screw (13) penetrates through the U-shaped plate (6) and is in threaded connection with the U-shaped plate, and the upper end of the regulating screw (13) is fixedly connected with a second hand wheel (10).

7. The coal seam thickness regulating and controlling device of the clean coal online ash meter is characterized in that two sliding grooves (28) are formed in the bottom of the leveling plate (11), two ends of the U-shaped rod (27) are respectively installed in the two sliding grooves (28) and are in sliding connection with the two sliding grooves, and a third spring (29) is fixedly connected between each end of the U-shaped rod (27) and the sliding groove (28) on the same side.

8. The device for regulating and controlling the coal seam thickness of the clean coal online ash meter according to claim 7, characterized in that a limiting groove (30) is formed in the inner wall of the sliding groove (28), a limiting block (18) is connected in the limiting groove (30) in a sliding manner, and the limiting block (18) is fixedly connected with the U-shaped rod (27).