CN211711746U - Adjustable spurt lining coal dropping pipe - Google Patents

Abstract

The utility model provides a bur inside lining coal breakage pipe with adjustable can effectively solve the wearing and tearing problem of coal breakage pipe, and with low costs, simple to operate. The utility model comprises a steel inner plate, a steel outer plate and an interface flange; a plurality of steel inner plates are fixed together to form a coal dropping channel; the interface flanges are fixed at two ends of the coal dropping channel; the steel outer plate is positioned on the outer side of the steel inner plate; the method is characterized in that: the steel plate fixing device also comprises a spur, a flat steel connecting piece, an angle steel connecting piece and a fixing bolt; the flat steel connecting piece is fixed on the inner steel plate, and the angle steel connecting piece is fixed on the outer steel plate; the flat steel connecting piece is provided with a connecting hole, and the flat steel connecting piece and the angle steel connecting piece are connected together after the fixing bolt penetrates through the connecting hole; the connecting holes are multiple and are divided into at least two rows, and the connecting holes in each row are arranged inside and outside; the spurs are fixedly connected with the outer steel plate, and the heads of the spurs penetrate through the inner steel plate and then are positioned in the coal dropping channel.

Description

Adjustable spurt lining coal dropping pipe

Technical Field

The utility model relates to a bur inside lining coal breakage pipe with adjustable for among the thermal power factory fortune coal system.

Background

In a coal conveying system of a thermal power plant, a coal drop pipe is wide in application, and the coal drop pipe has the main functions of avoiding a large amount of dust generated during coal dropping and simultaneously playing a role in guiding coal flow. The coal dropping pipes with different specifications can be used for connecting the fall between coal conveying equipment such as a coal feeder and a belt conveyor, two belt conveyors, a belt conveyor and a crusher.

At present, square coal breakage pipes with flanges are generally adopted for coal conveying systems used in thermal power plants under construction and put into production. The manufacturing method of the coal dropping pipe comprises the following steps: 4 steel plates are welded into a square coal dropping channel, interface flanges are manufactured at two ends of the coal dropping channel, and the coal dropping channel is connected with upper end coal conveying equipment and lower end coal conveying equipment through the flanges. The coal flow slides in the square coal dropping pipe which is obliquely arranged, the upper half part of the square coal dropping pipe is less in contact with the coal flow, and the abrasion is slow; the lower half part is frequently contacted with the coal flow, gradually abraded and thinned under the action of the coal flow, and finally worn through and damaged. When the coal dropping pipe is worn to be scrapped, the whole section of the coal dropping pipe needs to be detached and replaced, time and labor are wasted, and a large amount of steel is wasted.

In order to solve the abrasion problem of the coal dropping pipe, more and more people add a lining plate structure in the coal dropping pipe during the design and maintenance work. However, the lining plate made of high-quality material has high cost, and the price of the lining plate is even higher than the outer wall of the coal dropping pipe, so the design of the coal dropping pipe with the lining plate is not popularized due to the high cost. In addition, if the lining plate is additionally arranged on the inner wall of the coal dropping pipe which is put into use, the scale on the inner wall of the coal dropping pipe needs to be cleaned firstly, then the uneven inner wall is restored to be flat by beating, and then the lining plate and the inner wall are drilled together and fixedly connected through screws, so that the installation process is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of existence among the prior art, provide an adjustable bur inside lining coal breakage pipe, can effectively solve the wearing and tearing problem of coal breakage pipe, and with low costs, simple to operate.

In order to achieve the purpose of the utility model, the utility model adopts the technical proposal that: an adjustable stabbing lining coal dropping pipe comprises a steel inner plate, a steel outer plate and an interface flange; a plurality of steel inner plates are fixed together to form a coal dropping channel; the interface flanges are fixed at two ends of the coal dropping channel; the steel outer plate is positioned on the outer side of the steel inner plate; the method is characterized in that: the steel plate fixing device also comprises a spur, a flat steel connecting piece, an angle steel connecting piece and a fixing bolt; the flat steel connecting piece is fixed on the inner steel plate, and the angle steel connecting piece is fixed on the outer steel plate; the flat steel connecting piece is provided with a connecting hole, and the flat steel connecting piece and the angle steel connecting piece are connected together after the fixing bolt penetrates through the connecting hole; the connecting holes are multiple and are divided into at least two rows, and the connecting holes in each row are arranged inside and outside; the spurs are fixedly connected with the outer steel plate, and the heads of the spurs penetrate through the inner steel plate and then are positioned in the coal dropping channel.

The utility model discloses still include the nut, the afterbody of bur is equipped with the screw thread, and the nut passes through the screw thread to be connected with the bur suddenly, will bur suddenly and steel planking be connected fixedly.

The spurs of the utility model adopt bolts.

The spurs of the utility model are multiple and evenly distributed.

Compared with the prior art, the utility model, have following advantage and effect: after working for a period of time, the coal slime fills gaps among the spurs to form a coal slime layer, the coal slime layer reduces the contact of coal flow and the inner wall of the coal dropping channel, plays a role of lining, protects the inner wall of the coal dropping channel, and has better anti-abrasion effect; after working for a long time, the front end of the bur is abraded, the insertion amount of the bur is increased by adjusting the gap between the steel inner plate and the steel outer plate, the work of replacing and installing the lining plate is omitted, and the cost is greatly reduced. During the machine halt maintenance, the steel outer plate can be directly detached, the coal slime layer which is supported by the bur is easy to peel off, the reinforcing steel bar is used for poking through the row holes of the inner steel plate, the coal slime layer deposited on the inner wall can be conveniently and quickly removed, and meanwhile, no negative effect is caused on other parts of the coal dropping system. The utility model discloses structural style is simple, and is with low costs, simple to operate, and the running life is long, and it is effectual to prevent gluing the coal, can effectively solve the wearing and tearing problem of coal breakage pipe.

Drawings

Fig. 1 is a schematic view of the structure of the embodiment of the present invention.

Fig. 2 is a left side view of the structure of fig. 1.

Fig. 3 is a schematic top view of the structure of fig. 1.

FIG. 4 is a schematic cross-sectional view of FIG. 2 under condition 1.

FIG. 5 is a schematic cross-sectional view of FIG. 2 under condition 2.

Fig. 6 is a partially enlarged structural diagram of a portion a in fig. 1.

Fig. 7 is a partially enlarged structural diagram of part B in fig. 4.

Fig. 8 is a schematic structural view of a flat steel connector according to an embodiment of the present invention.

Fig. 9 is a schematic view of a partial structure of the embodiment of the present invention during operation.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1-9, the present invention comprises a spur 1, a steel inner plate 2, a steel outer plate 3, a flat steel connector 4, an interface flange 5, an angle steel connector 6, a fixing bolt 8 and a nut 9.

A plurality of steel inner plates 2 are welded and fixed together to form a square coal dropping channel, and the inner walls of the steel inner plates 2 form the inner walls of the coal dropping channel.

The interface flanges 5 are welded and fixed at two ends of the coal dropping channel.

The outer steel plate 3 is located outside the inner steel plate 2. A gap is formed between the outer steel plate 3 and the inner steel plate 2.

The flat steel connecting piece 4 is welded and fixed on the steel inner plate 2, and the angle steel connecting piece 6 is welded and fixed on the steel outer plate 3. The flat steel connecting piece 4 is provided with a connecting hole 7, and the flat steel connecting piece 4 and the angle steel connecting piece 6 are connected together after the fixing bolt 8 penetrates through the connecting hole 7. The connecting holes 7 are multiple and at least divided into two rows, the connecting holes 7 in each row are arranged inside and outside, the inner position and the outer position between the angle steel connecting piece 6 and the flat steel connecting piece 4 can be adjusted by adjusting the connecting holes 7 through which the fixing bolts 8 pass, and the gap between the steel inner plate 2 and the steel outer plate 3 can be adjusted.

The tail of the spurs 1 is provided with threads, the spurs 1 are fixedly connected with the outer steel plate 3 through the threads and the spurs 1 by nuts 9, and the heads of the spurs 1 penetrate through the inner steel plate 2 and then are positioned in the coal dropping channel. The spurs 1 are bolts. The spurs 1 are uniformly arranged.

Before the coal dropping pipe is installed, the steel inner plate 2, the interface flange 5 and the flat steel connecting piece 4 are welded to form 1 set of coal dropping pipe framework; and assembling the spurs 1, the outer steel plates 3 and the angle steel connecting pieces 6 into 4 sets of outer plate groups.

When the coal dropping pipe is installed, the interface flanges 5 at the upper end and the lower end of the coal dropping pipe framework are firstly connected with the coal conveying equipment at the upper part and the lower part through bolts, then 4 sets of outer plate groups are sequentially installed on the four sides of the coal dropping pipe framework, wherein the angle steel connecting pieces 6 are connected on a row of connecting holes 7 on the outer side of the flat steel connecting pieces 4 through bolts, and the coal dropping pipe is installed under the working condition 1 shown in the figure 4. Under the working condition, the gap between the steel inner plate 2 and the steel outer plate 3 is larger, and the head of the bur 1 penetrates through the steel inner plate 2 and then is positioned in the coal dropping channel.

The normal operation state is as shown in fig. 9, the coal flow 10 slides in the square coal dropping pipe which is arranged obliquely, the spurs 1 in the coal dropping channel play a role in protecting the inner wall of the coal dropping pipe, and gradually form a coal slime layer 9 on the inner wall of the coal dropping pipe, if the coal slime layer 9 is thicker, after 4 sets of outer plate groups can be disassembled, the coal slime layer 9 shakes the framework of the coal dropping pipe, the coal slime layer 9 loses the support of the spurs, and the shaking and falling are easy.

After the operation is carried out for a long time, the burs 1 in the coal dropping channel are worn out completely, the mounting positions of the 4 sets of outer plate groups need to be adjusted, the angle steel connecting piece 6 is connected to the row of connecting holes 7 on the inner side of the flat steel connecting piece 4 through bolts, and the working condition 2 shown in figure 5 is mounted. Under the working condition, the clearance between the inner steel plate 2 and the outer steel plate 3 is smaller, and the working condition inside the coal dropping pipe is consistent with the working condition because the burs 1 are worn and shortened.

In addition, it should be noted that the shapes of the components, the names of the components, and the like of the embodiments described in the present specification may be different, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (4)

1. An adjustable stabbing lining coal dropping pipe comprises a steel inner plate, a steel outer plate and an interface flange; a plurality of steel inner plates are fixed together to form a coal dropping channel; the interface flanges are fixed at two ends of the coal dropping channel; the steel outer plate is positioned on the outer side of the steel inner plate; the method is characterized in that: the steel plate fixing device also comprises a spur, a flat steel connecting piece, an angle steel connecting piece and a fixing bolt; the flat steel connecting piece is fixed on the inner steel plate, and the angle steel connecting piece is fixed on the outer steel plate; the flat steel connecting piece is provided with a connecting hole, and the flat steel connecting piece and the angle steel connecting piece are connected together after the fixing bolt penetrates through the connecting hole; the connecting holes are multiple and are divided into at least two rows, and the connecting holes in each row are arranged inside and outside; the spurs are fixedly connected with the outer steel plate, and the heads of the spurs penetrate through the inner steel plate and then are positioned in the coal dropping channel.

2. The adjustable stab inner liner coal drop tube of claim 1, wherein: the tail of the protruding thorn is provided with threads, the nut is connected with the protruding thorn through the threads, and the protruding thorn is fixedly connected with the steel outer plate.

3. The adjustable stab inner liner coal drop tube of claim 1, wherein: the spurs are bolts.

4. The adjustable stab inner liner coal drop tube of claim 1, wherein: the spurs are uniformly arranged.

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