A spraying device for coal pits

Abstract

The application provides a spraying device for a coal receiving pit, and relates to the technical field of coal mine equipment. The spraying device comprises a coal receiving pit and an opening and closing door assembly. The upper sides and ends of the coal receiving pit are provided with the opening and closing door assembly. The opening and closing door assembly comprises an upper opening door, a lower opening door and a hinged part. The outer side of the upper opening door is provided with a mounting plate. The mounting plate is provided with a spraying part. The hinged part comprises two groups of upper and lower hinged parts. The hinged part comprises a shaft plate and a rotating shaft. The rotating shaft is rotatably arranged on the inner side of the shaft plate. The upper opening door and the lower opening door are respectively connected to the rotating shaft at the upper and lower ends. The spraying device is provided with the opening and closing door assembly on the coal receiving pit. The spraying part is arranged on the opening and closing door assembly. When spraying is needed, the rotating shaft is driven to rotate by the first motor, so that the upper opening door and the lower opening door are opened towards the inner side, and the spraying part sprays towards the inside of the coal receiving pit. When the coal flow impacts, the opening and closing door assembly can be closed, so that the spraying part is located outside, and impact damage is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine equipment, and particularly relates to a spraying device for a coal receiving pit. BACKGROUND

[0002] The coal receiving pit is an essential link in the coal flow conveying process in the coal industry. The coal receiving pit mainly receives coal transported in a coal truck and conveys the coal from a coal outlet of the coal receiving pit to a belt conveyor for transportation to a designated position. In this process, a large amount of dust is generated because the coal truck needs to pour the coal into the coal receiving pit.

[0003] The prior art generally installs a spraying device in the coal receiving pit. After the coal flow pouring is completed, the spraying method is used to eliminate the dust. However, the existing spraying device is generally built-in in the coal receiving pit and is often subjected to the scouring of the coal flow, resulting in serious wear and tear and extremely low service life. In the prior art, for example, the application number CN 213556065 U discloses a spraying device for a coal receiving pit and specifically discloses that the spraying devices are installed at the center and the outer edge of the coal receiving pit to form a ring-shaped closed dust removal space, greatly improving the dust removal effect. Meanwhile, a flexible buffer protection cap is installed on the center spraying device. However, in the above-mentioned technology, even if the protection cap is added to the center spraying device, the center spraying device is still subjected to the impact of the coal flow and is worn out. Meanwhile, the spraying devices at the edge are also easily subjected to the impact and are worn out. Therefore, the present application proposes a spraying device for a coal receiving pit to solve the problems in the prior art. SUMMARY

[0004] In view of the above problems, the present application provides a spraying device for a coal receiving pit. The spraying device for a coal receiving pit can close the door assembly when the coal flow impacts, so that the spraying part is located outside to avoid damage caused by the impact.

[0005] To achieve the purpose of the present application, the present application realizes the following technical scheme: a spraying device for a coal receiving pit, comprising a coal receiving pit and a door assembly, the coal receiving pit is provided with a door assembly above both sides and both ends, and the door assembly comprises an upper door, a lower door and a hinge part, the outer side of the upper door is provided with a mounting plate, and the mounting plate is provided with a spraying part, the hinge part is provided with two groups of upper and lower parts, and the hinge part comprises a shaft plate and a shaft, the shaft is rotatably arranged on the inner side of the shaft plate, and the upper door and the lower door are respectively connected to the shaft at the upper end and the lower end.

[0006] The left end of the shaft plate at the front position is provided with a first motor, the output end of the first motor is connected to the shaft at the front position, the right end of the shaft at the front position, both ends of the shaft at the right side, both ends of the shaft at the back side and the back end of the shaft at the left side are all connected with a connecting shaft, the connecting shaft is provided with a bevel gear, and the adjacent two groups of bevel gears are matched.

[0007] Further improvement lies in that the coal receiving pit is provided with a hopper below, and the hopper is provided with a coal outlet hole below, and the coal receiving pit, the hopper and the coal outlet hole are communicated with each other.

[0008] Further improvement lies in that the length of the spraying part is greater than the length of the upper door, and the length of the spraying part is less than the sum of the lengths of the upper door and the lower door.

[0009] Further improvement lies in that the spraying part comprises a spraying cylinder and a spraying ball, the spraying ball is arranged below the spraying cylinder, and the spraying ball is communicated with the spraying cylinder, the spraying ball is provided with spraying holes, and the spraying holes are provided in multiple groups.

[0010] Further improvement lies in that the inner side of the mounting plate is provided with a bearing ring, and the spraying cylinder is rotatably mounted with the mounting plate through the bearing ring.

[0011] Further improvement lies in that one side of the top of the mounting plate is provided with a second motor, the outer side of the spraying cylinder is provided with an embedding groove, and the second motor and the embedding groove are connected through a belt.

[0012] Further improvement lies in that the top of the spraying cylinder is provided with a sealing bearing, and the spraying cylinder is connected with a water inlet pipe through the sealing bearing, the water inlet pipe is a stretchable hose, and the water inlet pipe is used for connecting a water source.

[0013] Further improvement lies in that the bottom of the spraying cylinder is provided with a threaded head, the top of the spraying ball is provided with a nut sleeve, and the nut sleeve is threadedly matched with the threaded head.

[0014] Further improvement lies in that the upper door and the lower door are both metal plates, and the surfaces of the upper door and the lower door are both provided with smooth layers.

[0015] The beneficial effects of the present application are:

[0016] 1. The present application sets the opening and closing door assembly on the coal receiving pit, sets the spraying part on the opening and closing door assembly, when spraying is needed, the first motor drives the rotating shaft to rotate, the upper door and the lower door open towards the inner side, the spraying part sprays towards the inside of the coal receiving pit, when the coal flow impacts, the opening and closing door assembly can be closed, the spraying part is located outside, and impact damage is avoided.

[0017] 2. The present application is connected with the rotating shaft, and the taper gear is matched, so that the opening and closing door assemblies at both ends and both sides are opened synchronously, spraying is carried out at four positions, when spraying, water is fed into the spraying cylinder through the water inlet pipe, the water is sprayed out from the spraying holes on the spraying ball at multiple angles, the second motor drives the spraying cylinder to rotate through the belt, and a full-range multi-angle rotational flow is formed, and the dust removal effect of spraying is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of the present application;

[0019] Figure 2 is a structural schematic view of the present application at A;

[0020] Figure 3 is a schematic view of the spraying part of the present application;

[0021] Figure 4 is a schematic view of the threaded head and nut sleeve of the present application.

[0022] Wherein: 1, coal receiving pit; 2, upper door; 3, lower door; 4, mounting plate; 5, shaft plate; 6, rotating shaft; 7, first motor; 8, connecting shaft; 9, bevel gear; 10, hopper; 11, coal outlet hole; 12, spraying cylinder; 13, spraying ball; 14, bearing ring; 15, second motor; 16, belt; 17, sealed bearing; 18, water inlet pipe; 19, threaded head; 20, nut sleeve. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present application, the present application will be further described below in conjunction with the embodiments, which are only used to explain the present application and do not constitute a limitation on the protection scope of the present application. EMBODIMENT

[0024] According to Figure 1 , 2 , 3, 4, the present embodiment proposes a spraying device for coal receiving pit, which comprises a coal receiving pit 1 and a door opening and closing assembly, the upper side and both ends of the coal receiving pit 1 are provided with the door opening and closing assembly, and the door opening and closing assembly comprises an upper door 2, a lower door 3 and a hinge part, the outer side of the upper door 2 is provided with a mounting plate 4, and the mounting plate 4 is provided with a spraying part, the hinge part is provided with two groups of upper and lower, and the hinge part comprises a shaft plate 5 and a rotating shaft 6, the rotating shaft 6 is rotatably arranged on the inner side of the shaft plate 5, and the upper door 2 and the lower door 3 are respectively connected to the rotating shaft 6 at the upper and lower ends;

[0025] The left end of the shaft plate 5 at the front side position is provided with a first motor 7, and the output end of the first motor 7 is connected with the front shaft 6. The right end of the front shaft 6, both ends of the right shaft 6, both ends of the rear shaft 6, and the rear end of the left shaft 6 are all connected with a connecting shaft 8, and the connecting shaft 8 is provided with a bevel gear 9, and the two adjacent groups of bevel gears 9 are matched. In use, the opening and closing door assembly is arranged on the coal receiving pit 1, and the spraying part is arranged on the opening and closing door assembly. When spraying is needed, the front shaft 6 is driven to rotate by the first motor 7, so that the upper opening door 2 and the lower opening door 3 at the front side are opened towards the inside, and the spraying part sprays towards the inside of the coal receiving pit 1. At the same time, due to the connection of the connecting shaft 8 and the shaft 6, and the matching of the bevel gears 9, the opening and closing door assemblies at both ends and the rear side are opened synchronously, so that the four positions are sprayed. When the coal flow impacts, the opening and closing door assembly can be closed, so that the spraying part is located outside.

[0026] The coal receiving pit 1 is provided below with a hopper 10, and the hopper 10 is provided below with a coal outlet hole 11, and the coal receiving pit 1, the hopper 10 and the coal outlet hole 11 are communicated with each other. The hopper 10 is used for guiding the coal flow, and the coal outlet hole 11 is used for discharging the coal flow.

[0027] The length of the spraying part is greater than the length of the upper opening door 2, and the length of the spraying part is less than the sum of the lengths of the upper opening door 2 and the lower opening door 3. When the upper opening door 2 and the lower opening door 3 are opened, the spraying part can be opened towards the inside of the coal receiving pit 1, and the spraying part can be higher than the upper opening door 2, so as to ensure the spraying effect.

[0028] The spraying part comprises a spraying cylinder 12 and a spraying ball 13. The spraying ball 13 is arranged below the spraying cylinder 12 and communicates with the spraying cylinder 12. The spraying ball 13 is provided with a plurality of spraying holes. The inner side of the mounting plate 4 is provided with a bearing ring 14, and the spraying cylinder 12 is rotatably mounted on the mounting plate 4 through the bearing ring 14. One side of the top of the mounting plate 4 is provided with a second motor 15. The outer side of the spraying cylinder 12 is provided with an embedded groove, and the second motor 15 and the embedded groove are connected by a belt 16. The top of the spraying cylinder 12 is provided with a sealing bearing 17, and the spraying cylinder 12 is connected with a water inlet pipe 18 through the sealing bearing 17. The water inlet pipe 18 is a stretchable hose, and the water inlet pipe 18 is used for connecting a water source. In use, when spraying at the four positions, water is introduced into the spraying cylinder 12 through the water inlet pipe 18, and the water is sprayed out from the spraying holes on the spraying ball 13 at multiple angles. The second motor 15 drives the spraying cylinder 12 to rotate by the belt, forming a full-range multi-angle rotational flow. In this process, the spraying cylinder 12 rotates through the bearing ring 14, and the water inlet pipe 18 is guided into the spraying cylinder 12 through the sealing bearing 17, without affecting the rotation of the spraying cylinder 12.

[0029] The bottom of the spray cylinder 12 is provided with a threaded head 19, and the top of the spray ball 13 is provided with a nut sleeve 20. The nut sleeve 20 and the threaded head 19 are threadedly matched. The threaded installation between the nut sleeve 20 and the threaded head 19 facilitates the replacement of the spray ball 13 and avoids clogging. Example

[0030] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a spraying device for a coal receiving pit, including a coal receiving pit 1 and an opening and closing door assembly. The opening and closing door assembly is provided on the upper sides and the upper ends of the coal receiving pit 1. The opening and closing door assembly includes an upper opening door 2, a lower opening door 3 and a hinge part. The outer side of the upper opening door 2 is provided with a mounting plate 4, and the mounting plate 4 is provided with a spraying part. The hinge part is provided with two sets, upper and lower, and the hinge part includes a shaft plate 5 and a rotating shaft 6. The rotating shaft 6 is rotatably disposed on the inner side of the shaft plate 5. The upper opening door 2 and the lower opening door 3 are respectively connected to the rotating shaft 6 at the upper and lower ends.

[0031] A first motor 7 is provided at the left end of the shaft plate 5 at the front position, and the output end of the first motor 7 is connected to the rotating shaft 6 at the front. The right end of the rotating shaft 6 at the front, both ends of the rotating shaft 6 at the right, both ends of the rotating shaft 6 at the rear, and the rear end of the rotating shaft 6 at the left are all connected to a connecting shaft 8, and a bevel gear 9 is provided on the connecting shaft 8, with adjacent sets of bevel gears 9 being compatible. In use, an opening and closing door assembly is provided on the coal receiving pit 1, and a spray section is provided on the opening and closing door assembly. When spraying is required, the first motor 7 drives the rotating shaft 6 at the front to rotate, causing the upper opening door 2 and the lower opening door 3 at the front to open inward, so that the spray section sprays towards the inside of the coal receiving pit 1. Simultaneously, due to the connection of the connecting shaft 8 to the rotating shaft 6 and the compatibility of the bevel gears 9, the opening and closing door assemblies at both ends and the rear open synchronously, so that spraying occurs at four positions. When the coal flow impacts, the opening and closing door assembly can be closed, so that the spray section is located on the outside.

[0032] A hopper 10 is provided below the coal receiving pit 1, and a coal discharge hole 11 is provided below the hopper 10. The coal receiving pit 1, the hopper 10, and the coal discharge hole 11 are interconnected. The hopper 10 is used to guide the coal flow, and the coal discharge hole 11 is used to discharge the coal flow.

[0033] Both the top-opening door 2 and the bottom-opening door 3 are made of metal plates, and both surfaces of the top-opening door 2 and the bottom-opening door 3 are provided with a smooth layer. This helps to reduce friction and ensures that the coal flow can slide off smoothly.

[0034] The present application sets the opening and closing door assembly on the coal receiving pit 1, sets the spraying part on the opening and closing door assembly, when the spraying is needed, the front rotating shaft 6 is rotated by the first motor 7, the upper opening door 2 and the lower opening door 3 of the front side are opened towards the inside, the spraying part sprays towards the inside of the coal receiving pit 1, synchronously, the opening and closing door assemblies of the two ends and the rear side are opened synchronously due to the connection of the connecting shaft 8 and the rotating shaft 6 and the matching of the bevel gear 9, so that the spraying is carried out at four positions, when the coal flow impacts, the opening and closing door assembly can be closed, so that the spraying part is located outside, and the damage caused by the impact is avoided. Meanwhile, when the spraying is carried out at the four positions, the water is entered into the spraying cylinder 12 through the water inlet pipe 18, the water is sprayed from the spraying holes on the spraying ball 13 at multiple angles, the spraying cylinder 12 is rotated by the second motor 15 through the belt, and the omnibearing and multi-angle rotating flow is formed, so that the dust removal effect of the spraying is better.

[0035] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A spray device for a coal receiving pit comprising a coal receiving pit (1) and a shutter assembly, characterised in that: The upper side of both sides and both ends of the coal receiving pit (1) is provided with a set of opening and closing doors, and the set of opening and closing doors comprises an upper opening door (2), a lower opening door (3) and a hinge part, the outer side of the upper opening door (2) is provided with a mounting plate (4), and the mounting plate (4) is provided with a spraying part, the hinge part is provided with two groups of upper and lower hinges, and the hinge part comprises a shaft plate (5) and a rotating shaft (6), the rotating shaft (6) is rotatably arranged on the inner side of the shaft plate (5), and the upper opening door (2) and the lower opening door (3) are respectively connected to the rotating shaft (6) at the upper and lower ends. The left end of the shaft plate (5) at the front side position is provided with a first motor (7), and the output end of the first motor (7) is connected with the rotating shaft (6) at the front side, the right end of the rotating shaft (6) at the front side, both ends of the rotating shaft (6) at the right side, both ends of the rotating shaft (6) at the rear side and the rear end of the rotating shaft (6) at the left side are all connected with a connecting shaft (8), and the connecting shaft (8) is provided with a bevel gear (9), and the two adjacent groups of bevel gears (9) are matched with each other. The lower side of the coal receiving pit (1) is provided with a hopper (10), and the lower side of the hopper (10) is provided with a coal outlet hole (11), the coal receiving pit (1), the hopper (10) and the coal outlet hole (11) are communicated with each other, the length of the spraying part is greater than the length of the upper opening door (2), and the length of the spraying part is less than the sum of the lengths of the upper opening door (2) and the lower opening door (3).

2. A spray device for a coal pit according to claim 1, characterised in that: The spraying part comprises a spraying cylinder (12) and a spraying ball (13), the spraying ball (13) is arranged below the spraying cylinder (12), and the spraying ball (13) is communicated with the spraying cylinder (12), the spraying ball (13) is provided with a plurality of groups of spraying holes.

3. A spray device for a coal pit according to claim 2, characterised in that: The inner side of the mounting plate (4) is provided with a bearing ring (14), and the spraying cylinder (12) is rotatably mounted with the mounting plate (4) through the bearing ring (14).

4. A spray device for a coal pit according to claim 3, characterised in that: One side of the top of the mounting plate (4) is provided with a second motor (15), the outer side of the spraying cylinder (12) is provided with a recess, and the second motor (15) and the recess are connected with a belt (16).

5. A spray device for a coal pit according to claim 4, characterised in that: The top of the spraying cylinder (12) is provided with a sealing bearing (17), and the spraying cylinder (12) is connected with a water inlet pipe (18) through the sealing bearing (17), the water inlet pipe (18) is a stretchable hose, and the water inlet pipe (18) is used for connecting a water source.

6. A spray device for a coal pit according to claim 5, characterised in that: The bottom of the spraying cylinder (12) is provided with a threaded head (19), the top of the spraying ball (13) is provided with a nut sleeve (20), and the nut sleeve (20) is threadedly matched with the threaded head (19).

7. A spray device for a coal pit according to any one of claims 1 to 6, characterised in that: The upper opening door (2) and the lower opening door (3) are both metal plates, and the surfaces of the upper opening door (2) and the lower opening door (3) are both provided with smooth layers.

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