Coal receiving pit structure of coal storage and transportation system

Abstract

The utility model discloses a coal receiving pit structure of a coal storage and transportation system, which comprises a pit body, a cover body arranged at the top of the pit body, an air inducing pipe arranged in the pit body, a first sprayer and a second sprayer, the first sprayer and the second sprayer are arranged in the cover body, a grating plate is arranged at the top of the pit body, and the first sprayer and the second sprayer are oppositely arranged. And the grating plate is positioned between the first sprayer and the second sprayer. The effects that the humidity of the coal is reduced, corrosion of the high-humidity coal to the interior of the trestle is avoided, meanwhile, directional movement of dust falling dry fog is controlled in an air inducing mode, and interference of the dust falling dry fog to sight in the discharging process is weakened are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal receiving pits, in particular to a coal receiving pit structure of a coal storage and transportation system. Background Art

[0002] The coal storage and transportation system includes coal unloading, transfer, circular stacking, re-transfer and entering the coal grinding bin. During the transfer process, each section is connected by a trestle belt.

[0003] When trucks put coal into the coal unloading area, a large amount of dust will be generated when the coal enters the coal receiving pit. The dry fog dust suppression device currently used captures the dust in the coal receiving pit by spraying on the top, and then falls after agglomeration, achieving the effect of dust suppression. The existing dry fog dust suppression device needs to be turned on before the truck enters the site to ensure that water mist falls when unloading, which causes high humidity in the coal and affects the vision of the truck driver, which interferes with the unloading to a certain extent. Summary of the invention

[0004] The technical problem to be solved by the utility model is that the existing coal receiving pit adopts top spraying, which will cause excessive wetting of coal materials and affect the vision of truck drivers during the coal unloading process after being opened in advance.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a coal receiving pit structure of a coal storage and transportation system, including a pit body, a cover body arranged on the top of the pit body, an air duct arranged in the pit body, and a first sprinkler and a second sprinkler arranged in the cover body, a grille plate is arranged on the top of the pit body, the first sprinkler and the second sprinkler are arranged opposite to each other, and the grille plate is located between the first sprinkler and the second sprinkler.

[0006] Preferably, the pit body is an inverted right-angled trapezoidal structure, a hoist is provided on the straight side inside the pit body, the first sprayer is arranged on the inner wall of the cover body, and the second sprayer is horizontally arranged on the side wall of the hoist.

[0007] Preferably, the first sprayer is arranged obliquely downward.

[0008] Preferably, a material retaining grille is fixedly and obliquely provided on the top of the pit body, and the pipe opening of the air duct is located above the material retaining grille.

[0009] The utility model provides a coal receiving pit structure of a coal storage and transportation system. When a truck is unloading, air is induced in the pit body through an induced draft pipe. After forming a re-pressure, the dust reduction dry mist sprayed by the first sprayer and the second sprayer moves downward rapidly together with the dust, and is agglomerated and settled. A small part of the fine sediment is discharged with the induced draft pipe. The flow rate of the dust reduction dry mist is increased through the induced draft pipe, and the dust reduction dry mist in the pit body is reduced. The induced draft pipe controls the directional movement of the dust reduction dry mist, thereby reducing the humidity of the coal material and weakening the interference of the dust reduction dry mist on the unloading construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0011] Figure 1 It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0012] In the figure: 1. pit body; 2. cover body; 3. first sprinkler; 4. second sprinkler; 5. grille plate; 6. elevator; 7. induced draft duct; 8. material retaining grille. DETAILED DESCRIPTION

[0013] like Figure 1 The utility model provides a coal receiving pit structure of a coal storage and transportation system, comprising a pit body 1, a cover body 2 arranged on the top of the pit body 1, an air duct 7 arranged in the pit body 1, and a first sprinkler 3 and a second sprinkler 4 arranged in the cover body 2. A grid plate 5 is arranged on the top of the pit body 1, the first sprinkler 3 and the second sprinkler 4 are arranged oppositely, and the grid plate 5 is located between the first sprinkler 3 and the second sprinkler 4.

[0014] An elevator 6 is arranged in the pit body 1, and the coal is directly unloaded onto the grid plate 5, through which the coal leaks down. Before unloading, the axial flow fan, the first sprinkler 3 and the second sprinkler 4 are started, and the axial flow fan forms a negative pressure in the pit body 1 through the induced draft duct 7, so that the dust reduction dry mist generated by the first sprinkler 3 and the second sprinkler 4 flows downward rapidly and quickly contacts with the dust generated by unloading, so that the dust reduction dry mist can quickly capture the dust, and fall after agglomeration, and the excess dust reduction dry mist and dust enter the induced draft duct 7 and are aerated for exhaust gas treatment.

[0015] like Figure 1 The pit body 1 is an inverted right-angle trapezoidal structure, a hoist 6 is provided on the straight side of the pit body 1 , the first sprayer 3 is arranged on the inner side wall of the cover body 2 , and the second sprayer 4 is arranged horizontally on the side wall of the hoist 6 .

[0016] After the coal falls into the pit body 1, the coal in the pit body 1 can be lifted by the hoist 6 and then sent out through the trestle belt; the first sprayer 3 and the second sprayer 4 spray relative to each other to form a counter-attack, so that the settled dry mist gathers just above the grid plate 5. Under the action of the induced draft duct 7, the dust-reducing dry mist moves downward rapidly to capture and settle the dust.

[0017] As a preferred embodiment of the utility model, the first sprayer 3 is arranged tilted downward to accelerate the speed of the settling dry mist moving downward and improve the dust reduction efficiency.

[0018] like Figure 1As shown, in order to prevent the coal in the pit body 1 from hitting the induced draft pipe 7 and causing damage to the induced draft pipe 7, a material blocking grid 8 is fixedly arranged at the top of the pit body 1, and the pipe opening of the induced draft pipe 7 is located above the material blocking grid 8.

Claims

1. A coal receiving pit structure of a coal storage and transportation system, characterized in that: The invention comprises a pit body (1), a cover body (2) arranged on the top of the pit body (1), an air duct (7) arranged in the pit body (1), and a first sprayer (3) and a second sprayer (4) arranged in the cover body (2); a grille plate (5) is arranged on the top of the pit body (1); the first sprayer (3) and the second sprayer (4) are arranged opposite to each other, and the grille plate (5) is located between the first sprayer (3) and the second sprayer (4).

2. The coal receiving pit structure of the coal storage and transportation system according to claim 1, characterized in that: The pit body (1) is in an inverted right-angled trapezoidal structure, a hoist (6) is provided on the straight side of the interior of the pit body (1), the first sprayer (3) is arranged on the inner side wall of the cover body (2), and the second sprayer (4) is horizontally arranged on the side wall of the hoist (6).

3. The coal receiving pit structure of the coal storage and transportation system according to claim 2, characterized in that: The first sprayer (3) is arranged obliquely downward.

4. The coal receiving pit structure of the coal storage and transportation system according to claim 1, characterized in that: A material blocking grille (8) is fixedly and obliquely arranged on the top of the pit body (1), and the pipe opening of the air duct (7) is located above the material blocking grille (8).

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