CN212502706U

CN212502706U - Intelligent dust falling device for bulk materials

Info

Publication number: CN212502706U
Application number: CN202020691124.XU
Authority: CN
Inventors: 岳北州; 张帆; 张皓焱
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-02-09
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a bulk material intelligence dust device relates to bulk material and carries technical field, include the collecting hopper, connect material spoon, curve coal breakage pipe and feed spoon, the collecting hopper is the arc, the back welding of collecting hopper has two go-between and a dead lever, and the dead lever is located the top of go-between, and the connecting ring endotheca is equipped with the connecting rod, and the welding of connecting rod both ends has the fixed block, and collecting hopper below is equipped with connects the material spoon, connect material spoon below sealing connection to have curve coal breakage pipe. Has the advantages that: 1. the utility model discloses can reduce the dust escape, reduce or eliminate the needs to the initiative dust collection method simultaneously. The statistics of the method are that the generation amount of induced wind can be reduced by more than 70% (under the condition of no induced wind equipment capable of generating a crusher and the like); 2. the material flows along a fixed track on the wall, and the huge impact force of the material can reduce or prevent blockage; 3. the unloading impact force is reduced, which can extend belt life by reducing damage and wear.

Description

Intelligent dust falling device for bulk materials

Technical Field

The utility model relates to a technical field is carried to bulk material, especially relates to a bulk material intelligence dust device.

Background

At present, the bulk material transportation and dust removal mainly have three directions:

1. the dust removal purpose is achieved by improving the power and the efficiency of the dust remover, and the dust remover has the advantage of simple design mode.

But according to the current dust removal technology investigation conditions:

(1) the water quantity in the running of the water washing dust remover and the multi-pipe impact type dust remover can not keep the normal dust removal liquid level, and the stable continuous normal work is realized. In particular, the initial concentration of coal dust is strictly required, and the initial concentration cannot exceed 130g/m3, namely, the dust removal function is lost (dust cannot be discharged in time, and the viscosity of mortar is rapidly increased to cause that the dust cannot be absorbed). Gradually quitting the coal transportation and dust removal market.

(2) The pulse bag-type dust collector is the most common dust collector in China, has strict requirements on initial concentration, oiliness, viscosity, humidity and dust settling speed of coal dust, and is also known to achieve unqualified coal conveying and dust removing effects. The flat bag type dust remover is a dust remover appearing in recent years, the dust removing principle of the flat bag type dust remover is the same as that of other bag type dust removers, only a variety of the common bag type dust remover in the past is adopted (a round filtering bag is changed into a flat filtering bag, the same volume increases the filtering area), and no substantial technical improvement is provided. Because the air filtered by the cloth bag (because of being limited by filtration permeability, the dust content of the filtered air is slightly lower than the environmental protection standard of 120 mg/cubic meter, but far higher than the sanitary standard of 10 mg/cubic meter) is directly discharged to a working site, the serious secondary pollution is caused. Powder deposits are stored in a plurality of devices in the trestle, particularly in a cable trough and a box, which are more serious, and great fire hazard is caused.

(3) Electric dust collectors are the most common dust collecting equipment in thermal power plants, but the application in transfer stations is not very ideal. The main drawback is that the equipment has first of all been complex in the past, with a very high level of management of the equipment in terms of its distribution and installation and maintenance. For example, the rapping dust-removing period is very difficult to master, the rapping period is too long, the accumulated dust on the polar plate is too thick, the electric conductivity of charged dust on the polar plate is reduced, the dust-removing efficiency is reduced, the rapping period is too short, the dust can be dispersed into broken powder and falls down to cause larger secondary dust raising, the specific resistance of the dust has certain requirements, so that the dust has certain selectivity, and the high purification efficiency of all the dust cannot be obtained, in addition, the influence of the operating conditions such as the temperature and the temperature of the gas is larger, and the dust is operated under different temperatures and humidities, so that the obtained effects are different, the using effect of some dust is good under a certain temperature and humidity, and the electric dust remover can hardly be used due to the change of the resistance of the dust under another temperature and humidity. Finally, at present, electric dust removal for coal types with lower self-ignition points, such as lignite, has the risk of self-ignition and even explosion, so that electric dust removal is not allowed when lignite is regulated by many power plants.

2. The basic principle of the unpowered dust collector appearing in 2005 is that a fully-closed guide chute adds spraying (or dry fog) for dust settling, and the unpowered dust collector is the most original combination of pipeline dust settling and spraying dust settling of a belt conveyor and does not use electricity in form. Firstly, the totally-enclosed guide chute adopts a polyethylene sliding plate, rolling friction is changed into sliding friction, the friction coefficient is increased by multiple times, so that the electric load of a belt driving motor is increased by 30-50%, and the belt driving motor is substantially more expensive than other dust collectors, secondly, spraying (about 6% of coal conveying quantity is required in the whole coal conveying process), not only is the coal conveying and boiler equipment damaged and the service life reduced, but also the equal ratio heat is taken away when a large amount of water is added into coal for combustion, so that the electricity and coal consumption is increased, and the incredible economic loss is caused (0.9-1.0 ten thousand tons per million tons of electricity and coal consumption is increased by 1%). Thirdly, the water consumption is actually reduced by the existing dry fog technology, but the problem of a large amount of induced wind generated in the coal falling process is not solved by the totally-closed guide chute because the microparticles are easily influenced by the airflow, and the dust spray capturing efficiency of the dry fog is very poor under the condition of large induced wind (high fall and large transportation capacity). The fourth quilt is also built in the anti-overflow apron board, so that the fourth quilt cannot be replaced due to damage, and the sliding plate has short service life and wastes time and labor for replacement.

3. The flow of the materials is controlled by the structural improvement of a curve coal dropping pipe (chute) at a transfer point abroad, so that the generation of induced wind is controlled. This advantage is due to the dust control from the source, which is highly efficient. If the dust control standard is not high (below 10 mg/cubic), unpowered dust removal can be completely achieved by the settling guide chute with excellent design. If very high dust removal standards (below 2 mg/cubic) are to be achieved, a small dust remover may be added. The existing defects are complex design and high cost, but the existing method considers the maintenance-free and unpowered operation process in the future and has certain cost performance.

It is known that the main induced wind during transportation comes from three types, air is replaced (air is sucked in), air is introduced, and air is generated by the equipment. The replacement air comes from the extrusion of the materials to the air in the curved coal dropping pipe after the start-up, which brings about the influence that a large amount of dust is generated at one time when the equipment is just started up, but the air is not generated during the operation.

The air generated by the apparatus is the air generated by the crusher or the like, which has a fixed value in relation to the selected apparatus. The most important of these three sources of induced wind is the introduction of air. Introducing air means that each individual particle or mass of material moves downward with the surrounding air, and this air is referred to as introducing air. When the material impacts the belt, air is extruded out, and huge induced wind is formed. The larger the particle-to-particle spacing, the greater the number of particles, and the greater the amount of entrained air introduced. The formation process of the leading-in type air in the transferring process comprises the following steps: the material is dispersed when leaving the roller; gaps are formed among the scattered material particles, and the gaps are filled with air; the more dispersed the material is, the faster the falling speed is, the finer the particles are, the more the air is, and the more the induced wind is brought; when the material falls on the belt to impact and extrude air in the gap to form a large amount of induced wind, the dust can be supported and blown by the large amount of induced wind.

Therefore, if the material can be controlled to slow down the flowing speed, increase the sealing performance of the curve coal dropping pipe and reduce the air quantity in the coal dropping in a manner of being as close and coherent as possible, the generation of induced wind can be greatly reduced. If the impact of the material on the belt can be controlled, the generation of induced wind and the raised dust after the impact can be reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intelligent dust device of bulk material for solving above-mentioned problem just.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides an intelligent dust device for bulk materials, includes the collecting hopper, connects material spoon, curve coal breakage pipe and feed spoon, the collecting hopper is the arc, the back welding of collecting hopper has two go-between and a dead lever, and the dead lever is located the top of go-between, and the connecting ring endotheca is equipped with the connecting rod, and the welding of connecting rod both ends has the fixed block, and the collecting hopper below is equipped with connects the material spoon, connect material spoon below sealing connection to have curve coal breakage pipe, curve coal breakage pipe shape is the sinuosity, curve coal breakage pipe below sealing connection has the feed spoon.

Preferably, the inner wall of the curve coal dropping pipe is glued and adhered with a wear-resistant lining plate.

Preferably, the wear-resistant lining plate is made of ceramic.

Has the advantages that: 1. the utility model discloses can reduce the dust escape, reduce or eliminate the needs to the initiative dust collection method simultaneously. The statistics of the method are that the generation amount of induced wind can be reduced by more than 70% (under the condition of no induced wind equipment capable of generating a crusher and the like); 2. the material flows along a fixed track on the wall, and the huge impact force of the material can reduce or prevent blockage; 3. the unloading impact force is reduced, which can extend belt life by reducing damage and wear; 4. the block material is reduced in the amount of powder generated due to impact and abrasion, and the generation of dust can be reduced to the maximum extent; 5. the location of the discharge point can be controlled, which prevents running off, spillage and belt edge damage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 inventive exercise.

Fig. 1 is a schematic structural view of an intelligent dust settling device for bulk materials according to the present invention;

fig. 2 is a schematic structural view of a collecting hopper of the intelligent dust-settling device for bulk materials according to the present invention;

fig. 3 is a schematic structural diagram of a curved coal dropping pipe of an intelligent dust falling device for bulk materials.

The reference numerals are explained below:

1. a collection hopper; 101. fixing the rod; 102. a connecting ring; 103. a connecting rod; 104. a fixed block; 2. a material receiving spoon; 3. a curved coal drop tube; 4. a feeding spoon; 5. a conveyor belt; 6. a belt conveyor.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings as follows:

as shown in fig. 1-3, an intelligent dust-settling device for bulk materials comprises a collecting hopper 1, a material receiving spoon 2, a curved coal dropping pipe 3 and a feeding spoon 4, wherein the collecting hopper 1 is arc-shaped, the collecting hopper 1 mainly functions to collect and limit the moving material flow to minimize the expansion of the main body of the material when the material leaves a conveyor belt 5, and gradually changes the flow direction of the material to the vertical direction to make the material flow gently towards the lower part of a belt conveyor 6, two connecting rings 102 and a fixing rod 101 are welded on the back of the collecting hopper 1, the fixing rod 101 is connected with the connecting rod 103 through a bolt, the fixing rod 101 is positioned above the connecting rings 102, the connecting rod 103 is sleeved in the connecting rings 102, fixing blocks 104 are welded at the two ends of the connecting rod 103, the fixing blocks 104 are fixedly connected with a support of the conveyor belt 5, the main purpose of the fixing blocks 104 is to fix, the curved coal dropping pipe 3 is hermetically connected below the material receiving spoon 2, the curved coal dropping pipe 3 is curved and generally adopts an arc shape or an S shape, but the curved coal dropping pipe 3 does not have a so-called fixed shape, and actually the curved coal dropping pipe 3 does not have a so-called fixed shape, the curved coal dropping pipe 3 mainly has a shape which ensures that materials can be concentrated and continuous and can ensure that the materials can move along the wall, and a certain curve is formed to control the moving speed of the materials, so that in the actual installation and use, the shape of the curved coal dropping pipe 3 can be changed according to the actual situation, the feeding spoon 4 is hermetically connected below the curved coal dropping pipe 3, the feeding spoon 4 is designed to gradually unload the materials onto the belt conveyor 6, so that the moving direction of the goods is the same as the moving direction of the belt, and the speed of the materials is close to the speed of the belt, and the collected materials can be guided to the center of the receiving belt from a proper angle at a proper speed so as, Belt wear, dust generation, eccentric wear, wear of wear resistant liners and other problems, another advantage of unloading by the material receiving spoon 2 is the reduction of the belt run-out structure required for the belt in the unloading zone. When the belt runs, the belt is cut into materials at a similar speed in the same direction, so that the impact on the belt is reduced, and the requirements of a buffer bed and a buffer roller are reduced, the inner wall of the curved coal dropping pipe 3 is glued and adhered with a wear-resistant lining plate, the wear-resistant lining plate is made of ceramics, the curved coal dropping pipe 3 and the common coal dropping pipe are different in that the materials move along the inner wall in a concentrated mode, the common coal dropping pipe basically moves in the coal dropping pipe in a void mode, and only a plurality of impact points generate huge impact and abrasion on the materials, so that the wear-resistant lining of the curved coal dropping pipe 3 has higher requirements on wear resistance, and only a plurality of impact points are required in the aspect of impact resistance, experience shows that the ceramics are the best wear-resistant materials, the wear-resistant lining plate is connected with the curved coal dropping pipe 3 through epoxy resin glue for enhancing the adhesive force and playing a certain buffer effect.

The working principle is as follows: when the material is discharged and falls through the conveyor belt 5, the material is discharged to the collecting hopper 1 by inertia, the collecting hopper 1 enables the material to be washed downwards, the flow speed of the material is reduced, the impact wear and the stacking of the material receiving spoon 2 are reduced, the material flows downwards along the inner wall of the curve coal dropping pipe 3 in a liquid form without scattering, the flow speed is controlled, the induced air quantity is reduced, the dust is greatly reduced, the feeding spoon 4 adjusts the angle of the feeding spoon to enable the gathered material to be discharged to the center of the belt conveyor 6, and therefore the problems of belt impact wear, material overflow, dust generation, eccentric loading and other problems are reduced.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a bulk material intelligence dust device which characterized in that: including collecting hopper (1), connect material spoon (2), curve coal breakage pipe (3) and feed spoon (4), collecting hopper (1) is the arc, the back welding of collecting hopper (1) has two go-between (102) and a dead lever (101), and dead lever (101) are located the top of go-between (102), and connecting rod (103) are established to go-between (102) endotheca, and dead lever (101) pass through bolted connection with connecting rod (103), and the welding of connecting rod (103) both ends has fixed block (104), and collecting hopper (1) below is equipped with connects material spoon (2), connect material spoon (2) below sealing connection to have curve coal breakage pipe (3), curve coal breakage pipe (3) shape is curved form, curve coal breakage pipe (3) below sealing connection has feed spoon (4).

2. The intelligent dust falling device for bulk materials according to claim 1, characterized in that: the inner wall of the curve coal dropping pipe (3) is glued and adhered with a wear-resistant lining plate.

3. The intelligent dust falling device for bulk materials according to claim 2, characterized in that: the wear-resistant lining plate is made of ceramics.