Raw coal conveying and dewatering equipment

Abstract

The utility model relates to a raw coal conveying and dewatering device which comprises a linear vibrating screen arranged at the tail of a raw coal main conveying belt and used for conducting primary screening on conveyed raw coal and throwing screened large-particle raw coal into the main conveying belt to be conveyed out. The small-particle-containing raw coal slurry falls into a sedimentation tank; the slurry pump is placed in the sedimentation tank and used for stirring and sucking raw coal slurry in the sedimentation tank and conveying the raw coal slurry to the solid-liquid separator, and a discharging port of the slurry pump is connected with a feeding port of the solid-liquid separator through a pipeline; the solid-liquid separator is erected above the main conveying belt and used for conducting secondary screening and dewatering on the raw coal slurry conveyed by the slurry pump and throwing screened solid raw coal particles into the main conveying belt to be conveyed out, and remaining slurry water is conveyed to a designated place. The dehydration problem of raw coal in the transportation process can be solved, the applicability is high, the conveying capacity is large, the dehydration effect is good, and the problem of on-site production halt caused by large water content of the raw coal is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dewatering equipment, concretely relates to a raw coal conveying dewatering equipment and belongs to the field of mine equipment. BACKGROUND

[0002] Due to the complex geological environment in the coal mine, the raw coal produced in the working face often contains a large amount of water, which threatens the safety production of the working face, and seriously affects the raw coal transportation, causes the main transportation belt to slide on the uphill section, and causes the phenomenon of water and coal, falling, etc., which not only causes the waste of raw coal, but also consumes manpower and material resources in cleaning the coal.

[0003] The raw coal dewatering has always been a problem in the coal mine, most of the equipment has the problems of large space occupation, incomplete dewatering and low efficiency, etc., a set of dewatering equipment in the raw coal conveying process is developed according to the design of the underground environment and the roadway size, and the problem of water-containing raw coal transportation is solved. SUMMARY

[0004] In view of the defects of the prior art, the utility model provides a raw coal conveying dewatering equipment which can solve the above problems.

[0005] The utility model discloses a raw coal conveying dewatering equipment, including:

[0006] Linear vibrating screen, linear vibrating screen sets up in raw coal main transport belt conveyor tail, for with the raw coal of conveying carries out primary screening and fast dewatering, and the big particle raw coal of screening falls into the main transport belt and is transported, and the small particle raw coal slurry falls into the sedimentation tank below linear vibrating screen;

[0007] Slurry pump, slurry pump is placed in the sedimentation tank, is used for stirring and sucking the raw coal slurry in the sedimentation tank, and is transported to the solid-liquid separator, and the discharge port of slurry pump is connected with the feed inlet of solid-liquid separator through pipeline;

[0008] Solid-liquid separator, solid-liquid separator is set up above the main transport belt, is used for the secondary screening and dewatering of the raw coal slurry transported by slurry pump, and the solid raw coal particles screened out fall into the main transport belt and are transported, and the remaining slurry is transported to the designated place.

[0009] Further, it further includes an electric hoist, the electric hoist is installed above the sedimentation tank, the slurry pump is hung below the electric hoist, and the slurry pump is used for controlling the movement and lifting of the slurry pump in the sedimentation tank.

[0010] Further, the linear vibrating screen is divided into an upper layer screen and a lower layer screen, the upper layer screen is used for screening raw coal particles with a diameter greater than 15mm, and the lower layer screen is used for screening raw coal particles with a diameter greater than 2mm.

[0011] Further, the secondary screening particle of the solid-liquid separator is the raw coal particle greater than 0.2mm.

[0012] Further, the solid-liquid separator screened slurry is transported to the filter press through a pipeline.

[0013] By adopting the technical scheme, the beneficial effects of the utility model are as follows: the dehydration problem of raw coal in the transportation process can be solved, the adaptability is strong, the conveying capacity is large, the dehydration effect is good, and the on-site production stop problem caused by the large water content of raw coal can be avoided. The linear vibrating screen is adopted for rapid classification and dehydration, the processing capacity is large, the filter press is adopted for filter pressing and dehydration for the coal slurry which is difficult to be dehydrated, the coal slurry cake after filter pressing can be completely recycled, has the same economic value as raw coal, and the economic benefit is considerable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a flow chart of the utility model.

[0016] In the drawing: 1. main conveying belt; 2. linear vibrating screen; 201. upper layer screen; 202. lower layer screen; 3. slurry pump; 4. solid-liquid separator; 5. main conveying belt; A. sedimentation tank. DETAILED DESCRIPTION

[0017] The utility model will be further described below in combination with the drawings and examples.

[0018] As shown in Figure 1 and Figure 2 , a raw coal conveying and dehydration equipment comprises a linear vibrating screen 2, a slurry pump 3 and a solid-liquid separator 4.

[0019] The linear vibrating screen 2 is arranged at the tail of the raw coal main conveying belt 1, the discharge port of the linear vibrating screen 2 is connected to the head of the main conveying belt 5, the linear vibrating screen 2 is used for carrying out primary screening on the conveyed raw coal, rapidly dehydrating, and throwing the large particle raw coal screened and separated into the main conveying belt 5 to convey out, and the small particle raw coal slurry falls into the sedimentation tank A below the linear vibrating screen 2; the linear vibrating screen 2 is divided into an upper layer screen 201 and a lower layer screen 202, the upper layer screen 201 is used for screening the raw coal particle with a diameter greater than 15mm, and the lower layer screen 202 is used for screening the raw coal particle with a diameter greater than 2mm. The linear vibrating screen 2 adopts a side-mounted vibrating motor as an excitation source, can ensure the efficient work of the vibrating screen for a long time, and the screen meshes of different sizes in the upper layer and the lower layer are not easy to be blocked.

[0020] The slurry pump 3 is placed in the sedimentation tank A, used for stirring and pumping the raw coal slurry in the sedimentation tank A, and conveying to the solid-liquid separator 4, the discharge port of the slurry pump 3 is connected to the feed inlet of the solid-liquid separator 4 through a pipeline; the slurry pump 3 is hung below the electric hoist (not marked in the figure), and the movement and lifting of the slurry pump 3 in the sedimentation tank A can be controlled by controlling the electric hoist, and the electric hoist is installed above the sedimentation tank A.

[0021] The solid-liquid separator 4 is erected above the main conveying belt 5, used for secondary screening and dewatering treatment of the raw coal slurry conveyed by the slurry pump 3, and the solid raw coal particles separated by screening are thrown into the main conveying belt 5 and conveyed out, the remaining slurry is conveyed to a designated place, which can be conveyed to a filter press (not shown in the figure) for further pressure filtration and dewatering, the slurry after screening of the solid-liquid separator 4 is connected to the feed inlet of the filter press through a pipeline, and the filter press is erected above the main conveying belt 5; the remaining slurry can also flow into a drainage ditch and be treated uniformly in a water sump. The particles that can be separated by the solid-liquid separator 4 are raw coal particles greater than 0.2mm.

[0022] When working, the main conveying belt 1 transports raw coal to the linear vibrating screen 2, the upper layer screen 201 of the linear vibrating screen 2 has a pore size of 15mm, and the lower layer screen 202 has a pore size of 2mm, the linear vibrating screen 2 classifies and screens the incoming material, the raw coal material greater than 2mm directly falls into the main conveying belt 5 and is conveyed out, the particles of raw coal smaller than 2mm after screening through the lower layer screen 202 flow into the sedimentation tank A, the slurry pump 3 is started, the slurry pump 3 stirs, pumps and conveys the raw coal material in the sedimentation tank A to the solid-liquid separator 4, the solid-liquid separator 4 further screens the raw coal material, the material of raw coal greater than 0.2mm directly falls onto the main conveying belt 5 and is conveyed out, and the remaining raw coal slurry is conveyed to the filter press for pressure filtration and dewatering through a pipeline.

Claims

1. A raw coal conveying and dewatering apparatus, characterized by, It comprises: A linear vibrating screen (2) is arranged at the tail of the raw coal main conveying belt (1), which is used to preliminarily screen the conveyed raw coal, and throw the screened large-particle raw coal into the main conveying belt (5) for conveying, and the small-particle raw coal slurry falls into the sedimentation tank (A) below the linear vibrating screen (2); A slurry pump (3) is placed in the sedimentation tank (A), which is used to stir and suck the raw coal slurry in the sedimentation tank (A) and convey it to the solid-liquid separator (4), and the discharge port of the slurry pump (3) is connected to the inlet of the solid-liquid separator (4) through a pipeline; The solid-liquid separator (4) is erected above the main conveying belt (5), which is used to secondarily screen the raw coal slurry conveyed by the slurry pump (3), and throw the screened solid raw coal particles into the main conveying belt (5) for conveying, and the remaining slurry is conveyed to a designated place.

2. The raw coal conveying and dewatering apparatus according to claim 1, characterized by It also includes an electric hoist installed above the sedimentation tank (A), which hoists the slurry pump (3) below, and is used to control the movement and lifting of the slurry pump (3) in the sedimentation tank (A).

3. The raw coal conveying and dewatering apparatus according to claim 2, characterized by The linear vibrating screen (2) is divided into an upper layer screen (201) and a lower layer screen (202), the upper layer screen (201) is used to screen raw coal particles with a diameter greater than 15mm, and the lower layer screen (202) is used to screen raw coal particles with a diameter greater than 2mm.

4. The raw coal conveying and dewatering apparatus according to claim 3, characterized by The solid-liquid separator (4) secondarily screens raw coal particles with a diameter greater than 0.2mm.

5. The raw coal conveying and dewatering apparatus according to claim 4, characterized by It also includes a filter press, and the slurry after being screened by the solid-liquid separator (4) is conveyed to the filter press through a pipeline.

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