CN211400680U

CN211400680U - Coal slime drying equipment

Info

Publication number: CN211400680U
Application number: CN201922011707.3U
Authority: CN
Inventors: 许正刚; 刘继源; 唐欣
Original assignee: Huainan Chuangda Industry Co ltd
Current assignee: Huainan Chuangda Industry Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-09-01
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to a drying equipment of coal slime drying matter, concretely relates to utilize hot power plant's cooling water waste heat to carry out drying equipment of coal slime drying matter. It includes: the device comprises a frame, a hopper, a conveying belt, a hot water pipe, a spiral cutter and an air supply mechanism; the hopper is arranged on the upper end surface of the frame close to the front end, the conveying belt is positioned in the frame and arranged along the front end to the rear end of the frame, the spiral cutter is sleeved on the outer peripheral side of the transverse penetrating part of the hot water pipe above the conveying belt, and the air supply mechanism consists of a hot air pipeline and an air supply pipe; this coal slime drying equipment utilizes the cooling water waste heat of steam power plant cooling tower to carry out drying process to the coal slime, need not the power consumption, very big reduction the input cost of coal slime stoving operation.

Description

Coal slime drying equipment

Technical Field

The utility model relates to a drying equipment of coal slime drying matter, concretely relates to utilize hot power plant's cooling water waste heat to carry out drying equipment of coal slime drying matter.

Background

Because the coal slime generally contains more clay minerals, and the water content is higher, the granularity composition is fine, most of the coal slime has high viscosity, and some of the coal slime also has certain fluidity. Due to these characteristics, the coal slurry is difficult to stack, store and transport. Particularly, when the material is stockpiled, the material is extremely unstable in shape, runs off when meeting water, and flies when being dried. As a result, not only are precious coal resources wasted, but also serious environmental pollution is caused, and the normal production of the coal washing plant is sometimes even restricted, which becomes a troublesome problem for the coal preparation plant.

In the known coal slime drying equipment, water in the coal slime is evaporated mostly by high heat generated by fuel combustion or electric energy to obtain dry coal slime, the coal slime drying equipment has the problems of large equipment volume, huge energy consumption and the like in order to realize higher drying treatment efficiency, so that the use cost is high, meanwhile, because the coal slime has high ash content and low heat productivity and causes low value of the coal slime, enterprises using the coal slime drying equipment to dry the coal slime have large investment and low output, and further the existing coal slime is still dried by adopting an original natural stacking and tedding method, but the original natural stacking and tedding method is restricted by sites and weather, the efficiency is low, and meanwhile, the coal slime runs off when meeting water and has the characteristic of serious environmental pollution caused by air drying and flying.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses just make in view of above-mentioned problem, the utility model aims to provide an utilize the cooling water waste heat of steam power plant to carry out the drying equipment that the dry matter of coal slime was put forward, this coal slime drying equipment utilizes the cooling water waste heat of the cooling tower of steam power plant to carry out drying process to the coal slime, need not the power consumption, very big reduction the input cost of coal slime stoving operation to the enterprise that carries out the dry production of coal slime has a profitable picture, brings considerable social and economic benefits.

Coal slime drying equipment includes: the device comprises a frame, a hopper, a conveying belt, a hot water pipe, a spiral cutter and an air supply mechanism;

the hopper is arranged on the upper end surface of the frame close to the front end, the conveying belt is positioned in the frame and arranged along the front end to the rear end of the frame, the spiral cutter is sleeved on the outer peripheral side of the transverse penetrating part of the hot water pipe above the conveying belt, and the air supply mechanism consists of a hot air pipeline and an air supply pipe;

the hot water pipe enters along one side of the front end of the rack, transversely penetrates towards the other side along one side of the rack for multiple times in the process of extending along the rack, transversely penetrates back along the other side of the rack to form a plurality of U-shaped bends, and finally extends out along the other side of the rear end of the rack, and the transversely-penetrated part of the hot water pipe is positioned above the conveying belt; the spiral cutter is arranged on the inner side wall of the rack through shaft sleeves arranged at two ends of the spiral cutter.

Advantageous effects

1. In this technical scheme, this coal slime drying equipment utilizes the cooling water waste heat of steam power plant's cooling tower to carry out drying process to the coal slime, need not the power consumption, very big reduction the input cost of coal slime stoving operation.

Drawings

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

Fig. 2 is the overall structure schematic diagram of the utility model with two hot air channels removed.

Fig. 3 is a front view of the present invention.

Fig. 4 is a side view of the present invention with one side of the frame removed.

Fig. 5 is a schematic structural view of the hot water pipe and the spiral cutter of the present invention.

Fig. 6 is a schematic view of the spiral cutter structure of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments and drawings, and more details will be set forth in the following description in order to provide a thorough understanding of the present invention, but it is obvious that the present invention can be implemented in various other ways different from those described herein, and those skilled in the art can make similar generalizations and deductions according to the actual application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of the embodiments.

As shown in fig. 1 and 2, a coal slurry drying apparatus includes: a frame 1, a hopper 2, a conveyer belt 3, a hot water pipe 4, a spiral cutter 5 and an air supply mechanism 6,

the frame 1 is composed of two metal plates erected at intervals, the hopper 2 is arranged on the upper end face of the frame 1 close to the front end, the conveyer belt 3 is positioned in the frame 1 and arranged along the front end to the rear end of the frame 1, the hot water pipe 4 enters along one side of the front end of the frame 1, the hot water pipe 4 is transversely inserted towards the other side along one side of the frame 1 for multiple times in the extending process along the frame 1, then transversely inserted back along the other side of the frame 1 to form a plurality of U-shaped bends, and finally extends out along the other side of the rear end of the frame 1, the transversely inserted part of the hot water pipe 4 is positioned above the conveyer belt 3, the spiral cutter 5 is sleeved on the outer peripheral side of the transversely inserted part of the hot water pipe 4 above the conveyer belt 3, the spiral cutter 5 is arranged on the inner side wall of the frame 1 through shaft sleeves arranged at two ends, the inner side of the spiral cutter 5 is in a butt joint state with the, two hot air pipes 61 are provided, the two hot air pipes 61 are located at two sides of the rack 1 and respectively cover the hot water pipes 4 exposed at two sides of the rack 1, the lower end walls of the two hot air pipes 61 are respectively provided with a plurality of air inlets 611, a plurality of air supply pipes 62 are respectively arranged at the upper ends of the two hot air pipes 61 at equal intervals, and fans (not shown in the drawing) are respectively arranged in the air supply pipes 62;

in the technical scheme, coal slime falls on a conveying belt 3 from a hopper 2, the conveying belt 3 carries the coal slime to be conveyed to the rear end of a frame 1 along the frame 1, a transverse hot water pipe 4 positioned above the conveying belt 3 exchanges heat with the coal slime through thermal radiation and thermal conduction to ensure that water in the coal slime is heated and evaporated, when a coal slime block on the conveying belt is contacted with a spiral cutter 5, the coal slime block can drive the spiral cutter 5 to rotate, and then the rotating spiral cutter 5 can cut the coal slime block to increase the heat exchange area and improve the heat exchange efficiency, meanwhile, the inner side of the spiral cutter 5 which is in a butt joint state with the outer peripheral side of the hot water pipe 4 can clear away the coal slime attached to the outer peripheral side of the hot water pipe 4 through rotation, so that the hot water pipe 4 can always keep the functions of thermal radiation and thermal conduction, air in a hot air pipeline 61 exchanges heat with the hot water pipe 4 to form hot air, and is blown to the coal slime on the, the heat exchange with the coal slime is realized through the heat convection, so that the moisture in the coal slime is quickly evaporated, meanwhile, the water vapor formed by the evaporation of the moisture in the coal slime can be timely taken away by the hot air flow blown out from the air outlet 53, and the reverse effect of humidifying the coal slime caused by the water vapor and the external air which form water drops after the heat exchange is avoided;

as shown in fig. 1, 2 and 5, a plurality of spiral cutters 5 are arranged at the positions corresponding to the hot water pipe 4 and transversely inserted, and two adjacent spiral cutters 5 are in opposite rotating directions; the two adjacent spiral cutters 5 with opposite rotating directions can turn the coal slime towards one side of the conveying belt 3 and then turn the coal slime towards the other side of the conveying belt 3, so that the heat exchange area of the coal slime is increased, the heat exchange part of the coal slime is also increased, and the drying efficiency of the coal slime is further improved;

as shown in fig. 3 and 4, considering that the coal slime is cut and crushed and then spread on the conveyor belt 3, the rear spiral cutters 5 cannot cut and turn over the coal slime any more as the horizontal height of the coal slime is reduced, and the outer diameters of the spiral cutters 5 are gradually increased from front to back along the rack 1; the coal slime heat exchanger can continuously cut and turn the coal slime, effectively increase the heat exchange area of the coal slime and improve the heat exchange efficiency.

Further, as shown in fig. 1, the plurality of air supply pipes 62 on the two hot air ducts 61 are arranged in a staggered manner. The air supply pipes 62 arranged in a relatively staggered manner enable the hot air blown out from the two sides relatively to collide with the outer side part, so that turbulence is formed, and the heat exchange efficiency is increased by the turbulence.

Further, as shown in fig. 1, the plurality of air supply pipes 62 on the two hot air ducts 61 are respectively and correspondingly arranged above one end of each spiral cutter 5; the hot air blown out from each air supply pipe 62 flows along one spiral cutter 5, and meanwhile, when the hot air blown out from the air supply pipe 62 contacts with the spiral cutter 5, turbulent flow and rotational flow are formed under the influence of the spiral cutter 5, and further, the heat exchange efficiency is increased through the turbulent flow and the rotational flow.

Further, as shown in fig. 1 and 2, the joints between the inner side wall surface of the frame 1 and the two ends of the spiral cutter 5 each have a flange 11, and the flange 11 extends toward the conveyor belt 3 along the upper end of the frame 1 and abuts against the upper end surface of the conveyor belt 3. The flange 11 is mainly used for mounting the spiral cutter 5, and can increase the supporting force for the hot water pipe 4 and the spiral cutter 5.

Further, as shown in fig. 1, both sides of the flange 11 on the inner side wall surface of the frame 1 are provided with inclined surfaces 111 facing the inner side of the spiral cutter 5. This inclined plane 111's setting, mainly used guide the coal slime and remove towards 3 middle portions of conveyer belt, avoids the coal slime to pile up in 3 both sides of conveyer belt, and can't carry out effectual cutting, breakage, influences heat exchange efficiency, simultaneously, has also avoided the coal slime to pile up excessively, forms the extrusion and the equipment that leads to damage the risk to frame 1.

Claims

1. Coal slime drying equipment includes: the device comprises a rack (1), a hopper (2), a conveying belt (3), a hot water pipe (4), a spiral cutter (5) and an air supply mechanism (6);

the hopper (2) is arranged on the upper end face, close to the front end, of the rack (1), the conveying belt (3) is located in the rack (1) and arranged from the front end to the rear end of the rack (1), the spiral cutter (5) is sleeved on the outer peripheral side of a transverse penetrating part, located above the conveying belt (3), of the hot water pipe (4), and the air supply mechanism (6) is composed of a hot air pipeline (61) and an air supply pipe (62);

the method is characterized in that: the hot water pipe (4) enters along one side of the front end of the rack (1), the hot water pipe (4) is transversely inserted towards the other side along one side of the rack (1) for many times in the extending process along the rack (1), and then is transversely inserted back along the other side of the rack (1) to form a plurality of U-shaped bends, and finally extends out along the other side of the rear end of the rack (1), and the transversely inserted part of the hot water pipe (4) is positioned above the conveying belt (3); the spiral cutter (5) is arranged on the inner side wall of the rack (1) through shaft sleeves arranged at two ends.

2. The coal slime drying equipment of claim 1, characterized in that: the inner side of the spiral cutter (5) is in a state of abutting joint with the outer peripheral side of the hot water pipe (4).

3. The coal slime drying equipment of claim 1, characterized in that: the spiral cutters (5) are arranged at the positions corresponding to the transverse penetration positions of the hot water pipes (4), and two adjacent rotating directions of the spiral cutters (5) are in opposite states.

4. The coal slime drying apparatus as set forth in any one of claims 1 to 3, wherein: the outer diameters of the spiral cutters (5) are gradually increased from front to back along the rack (1).

5. The coal slime drying equipment of claim 1, characterized in that: the plurality of blast pipes (62) positioned on the two hot air pipelines (61) are arranged in a relative staggered way.

6. The coal slime drying equipment of claim 5, characterized in that: and the plurality of air supply pipes (62) positioned on the two hot air pipelines (61) are respectively and correspondingly arranged above one end of each spiral cutter (5).

7. The coal slime drying equipment of claim 1, characterized in that: the joints of the inner side wall surface of the rack (1) and the two ends of the spiral cutter (5) are provided with flanges (11).

8. The coal slime drying equipment of claim 7, characterized in that: the flange (11) extends towards the conveying belt (3) along the upper end of the rack (1) and is abutted against the upper end face of the conveying belt (3).

9. The coal slime drying apparatus of claim 7 or 8, characterized in that: both sides of a flange (11) on the inner side wall surface of the rack (1) are set to be inclined planes (111) facing the inner side of the spiral cutter (5).