Coal mine spraying and dust-settling device capable of being movably adjusted based on dust production position

Abstract

The utility model discloses a coal mine spraying and dust-settling device capable of moving and adjusting based on a dust-producing position, which comprises a plurality of movable spray head components mounted on a high-pressure water pipe, the water flow direction in the high-pressure water pipe is from front to back, and a plurality of through holes are formed in the bottom of the high-pressure water pipe along the water flow direction; a water pressure type valve used for sealing the through hole is arranged in the high-pressure water pipe, and the movable spray head assembly moves to the position of the through hole and opens the through hole for spraying by jacking the water pressure type valve. The nozzle is simple in structure and easy and convenient to operate, the characteristic that the valve plates evenly distributed below the pipeline can be automatically closed after the top ring retreats under the impact of water flow is utilized, and the nozzle is controlled to be opened and closed by rotating the nozzle up and down through threads; by arranging the sliding sleeve, the whole spraying and dust-settling device moves back and forth along the high-pressure water pipe to change the spraying and dust-settling position for spraying operation, so that the operation of the whole pipeline is not influenced while emphasized dust removal can be performed on some areas.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine underground dust removal and environmental protection technology, specifically relating to a coal mine spray dust suppression device that is adjusted based on the location of dust generation. Background Technology

[0002] The following papers disclose atomizing nozzles used for dust removal in coal mine roadways and working faces: 1) Study on the effect of fine water mist dust removal device in removing respirable dust (Yang Shuai, Ren Rui, Xue Yuyang, et al. Journal of Underground Space and Engineering, 2023, 19(S1):494-500); 2) Design and application of intelligent fully automatic dust suppression water curtain device (Xu Aiguo. Shandong Coal Science and Technology, 2023, 41(05):107-109); 3) Influence of nozzle arrangement on the efficiency of fine water mist dust removal (Liu Zhichao, Li Bin, Song Wenya. Metal Mines, 2016, (03) :156-159), 4) Research on spray and control elements of high pressure fine water mist dust removal system (Luo Gang. Huazhong University of Science and Technology, 2016), 5) Optimization design and flow field simulation of key components of coal mine dust removal device (Tang Shanshan. Anhui University of Science and Technology, 2015), 6) Numerical simulation of flow field of nozzle of new coal mine wet dust removal device (Tang Shanshan, Wei Chaokun, Wang Gaohua. Coal Mine Machinery, 2015, 36(03):119-121), 7) Selection of spray dust removal and spray nozzle in mine (Wei Chenggong. Environment and Life, 2014, (12):174-176).

[0003] The nozzles disclosed in the aforementioned documents are all fixedly installed on the pipeline. Since the dust-generating parts are different in the actual coal production process, the focus of dust removal is also different. However, when laying a pipeline, ordinary nozzles can only perform dust removal with the same efficiency over a large area, and cannot focus on the dust-generating end or the parts that need to be focused on dust removal. The cost of laying another pipeline will increase significantly, and the consumption is not commensurate with the output. However, if a nozzle moving structure can be added to a pipeline, this problem can be solved at a relatively low cost. Utility Model Content

[0004] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a coal mine spray dust suppression device that is installed on a high-pressure water pipe and is adjusted based on the dust generation position.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a coal mine spray dust suppression device that is movable and adjustable based on the dust generation location, including several movable nozzle assemblies installed on a high-pressure water pipe. The water flow direction in the high-pressure water pipe is from front to back. Several through holes are opened at the bottom of the high-pressure water pipe along the water flow direction. A water pressure valve for sealing the through holes is provided inside the high-pressure water pipe. The movable nozzle assembly moves to the through hole position and opens the through hole through the top pressure water pressure valve to spray.

[0006] The hydraulic valve includes a valve plate with a stepped hole that is larger inside and smaller outside. The valve plate has a convex structure that matches the stepped hole. The front side of the valve plate is rotatably connected to the inner wall of the high-pressure water pipe via a hinge. The bottom surface of the valve plate is provided with a sealing gasket that fits against the stepped surface of the through hole.

[0007] The valve plate has an integral water-facing wedge on its top surface, with the top surface of the water-facing wedge being lower in the front and higher in the back.

[0008] The movable nozzle assembly includes a sliding sleeve, an internally threaded sleeve, and a nozzle. The sliding sleeve is slidably connected to the high-pressure water pipe. The upper end of the internally threaded sleeve is fixedly connected to the bottom of the sliding sleeve. The center line of the internally threaded sleeve is perpendicular to the center line of the sliding sleeve and is internally connected. The upper outer circle of the nozzle is cylindrical, and the lower outer circle of the nozzle is conical. The upper outer circle of the nozzle is threadedly connected to the inner circle of the internally threaded sleeve through a sealing pipe thread structure. A water inlet is provided at the center of the upper end of the nozzle. A top ring for pressing the bottom surface of the pressure valve plate is provided outside the water inlet at the upper end of the internally threaded sleeve. An atomizing spray hole is provided at the lower end of the nozzle.

[0009] The lower end of the internally threaded sleeve is equipped with a limit ring.

[0010] The nozzle has a rubber sealing seat on the top surface that fits the top ring. The top surface of the rubber sealing seat has an arc groove that matches the arc surface of the bottom of the high-pressure water pipe. The upper part of the inner circle of the internal threaded sleeve has a guide bar parallel to the center line of the internal threaded sleeve. The outer circle of the rubber sealing seat has a guide groove that cooperates with and slides with the guide bar.

[0011] Compared with the prior art, the movable nozzle assembly of this utility model, using the above technical solution, differs significantly from the structure of ordinary nozzles, mainly in the following aspects:

[0012] (1) Different mechanical structures. The nozzle used in this utility model is separate from the sliding sleeve and internal threaded sleeve that move. The sliding sleeve can move arbitrarily on the pipeline; ordinary nozzles usually cannot move on the pipeline.

[0013] (2) Different usage scenarios. The movable nozzle assembly can perform targeted dust removal on a certain part or area without adding nozzles or replacing pipes, depending on the dust removal focus required; ordinary nozzles can only remove dust from fixed areas.

[0014] (3) Different usage methods. The movable nozzle assembly moves on the high-pressure water pipe. By screwing in the nozzle, the internal top ring pushes open the valve plate below the pipe to perform spraying. After the spraying is finished, the nozzle can be rotated downwards, the top ring disengages from the through hole, and the valve plate is closed by the impact of the water flow. The movable nozzle assembly can then be moved to another through hole to perform spraying.

[0015] This utility model has the following technical effects:

[0016] 1) The water flows from front to back in the high-pressure water pipe. The water pressure inside the high-pressure water pipe is applied to the valve plate, causing the sealing gasket on the valve plate to press tightly against the stepped surface of the through hole, thereby sealing the through hole. The water-facing wedge on the top surface of the valve plate further improves the sealing performance of the valve plate to the through hole by the radial pressure exerted by the water flow on the water-facing surface of the wedge, ensuring that there is no water leakage at the through hole where dust suppression spray is not applied.

[0017] 2) As the top ring at the upper end of the nozzle pushes the valve plate upwards, the rubber sealing seat moves upwards without rotating until the arc-shaped groove at the top of the rubber sealing seat presses against the arc-shaped surface at the bottom of the high-pressure water pipe, sealing the through hole. The outer circle of the upper part of the nozzle is connected to the inner circle of the internal threaded sleeve through a sealing pipe thread structure, providing a good sealing effect. This ensures that the high-pressure water in the high-pressure water pipe does not leak and can only be sprayed out through the atomizing nozzle at the lower end of the nozzle.

[0018] 3) The limiting ring prevents the nozzle from unscrewing downwards out of the internal threaded sleeve.

[0019] 4) The top ring not only pushes the valve plate upward, but also extends into the through hole, which can limit the position of the entire spray dust suppression device on the high-pressure water pipe (it cannot rotate or move axially).

[0020] In summary, this invention utilizes the characteristic that valve plates evenly distributed below the pipeline automatically close after the top ring retracts due to water flow impact. It employs a threaded rotating nozzle that moves up and down to control the nozzle's opening and closing. By incorporating a sliding sleeve, the entire spray dust suppression device moves back and forth along the high-pressure water pipe, changing the spray position for dust removal and reducing pressure loss. This concentrates superior water pressure on dust-generating areas, improving dust suppression efficiency and achieving targeted dust removal in specific areas without affecting the overall pipeline operation. This invention has a simple structure, is easy to operate, and has good application prospects and promotional value. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a structural diagram of the movable nozzle assembly;

[0023] Figure 3 This is a schematic diagram of the structure of a hydraulic valve when it seals the through hole;

[0024] Figure 4 yes Figure 3 Top view of the through hole after removing the water pressure valve;

[0025] Figure 5 This is a schematic diagram of the structure when the top ring pushes open the through hole of the water pressure valve. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0027] like Figures 1-5 As shown, the coal mine spray dust suppression device of this utility model, which is based on the location of dust generation and is movable and adjustable, includes several movable nozzle assemblies installed on a high-pressure water pipe 1. The water flow direction in the high-pressure water pipe 1 is from front to back. Several through holes 2 are opened at the bottom of the high-pressure water pipe 1 along the water flow direction. A water pressure valve for closing the through holes 2 is provided inside the high-pressure water pipe 1. The movable nozzle assembly moves to the position of the through hole 2 and opens the through hole 2 through the top pressure water pressure valve to spray.

[0028] The hydraulic valve includes a valve plate 3, a through hole 2 which is a stepped hole with a larger inner diameter and a smaller outer diameter, a convex structure that matches the stepped hole, and a hinge 4 that rotatably connects the front side of the valve plate 3 to the inner wall of the high-pressure water pipe 1. The bottom surface of the valve plate 3 is provided with a sealing gasket 5 that fits against the stepped surface 16 of the through hole 2.

[0029] The valve plate 3 has an integral water-facing wedge 6 on its top surface, and the top surface of the water-facing wedge 6 is a water-facing surface that is lower in the front and higher in the back.

[0030] The movable nozzle assembly includes a sliding sleeve 7, an internally threaded sleeve 8, and a nozzle 9. The sliding sleeve 7 is slidably connected to the high-pressure water pipe 1. The upper end of the internally threaded sleeve 8 is fixedly connected to the bottom of the sliding sleeve 7. The center line of the internally threaded sleeve 8 is perpendicular to the center line of the sliding sleeve 7 and is internally connected. The upper outer circle of the nozzle 9 is cylindrical, and the lower outer circle of the nozzle 9 is conical. The upper outer circle of the nozzle 9 is threadedly connected to the inner circle of the internally threaded sleeve 8 through a sealing pipe thread structure 18. A water inlet 17 is provided at the center of the upper end of the nozzle 9. A top ring 10 for the bottom surface of the pressure valve plate 3 is provided outside the water inlet 17 at the upper end of the internally threaded sleeve 8. An atomizing spray hole 11 is provided at the lower end of the nozzle 9.

[0031] The inner circle at the lower end of the internally threaded sleeve 8 is provided with a limiting ring 12.

[0032] The top surface of the nozzle 9 is provided with a rubber sealing seat 13 that fits outside the top ring 10. The top surface of the rubber sealing seat 13 is provided with an arc groove 14 that matches the bottom arc surface of the high-pressure water pipe 1. The upper part of the inner circle of the internal threaded sleeve 8 is provided with a guide bar 15 that is parallel to the center line of the internal threaded sleeve 8. The outer circle of the rubber sealing seat 13 is provided with a guide groove that cooperates with and slides with the guide bar 15.

[0033] When this utility model is in operation, the movable nozzle assembly is moved along the high-pressure water pipe 1 to the position of the through hole 2, so that the upper end of the internal threaded sleeve 8 of the movable nozzle assembly corresponds to the through hole 2. Then, the nozzle 9 is rotated so that the nozzle 9 moves upward inside the internal threaded sleeve 8. During the upward movement, the upper end of the top ring 10 presses against the bottom surface of the valve plate 3. After the valve plate 3 is subjected to the pressure, it rotates upward around the hinge 4, and the through hole 2 is opened. The nozzle 9 (rotating) drives the rubber sealing seat 13 (not rotating) to move upward along the guide bar 15 until the sealing rubber seat on the upper end of the nozzle 9 is pressed against the bottom of the high-pressure water pipe 1 (sealing the through hole 2). Then, the rotation of the nozzle 9 is stopped. The high-pressure water flow in the high-pressure water pipe 1 enters the nozzle 9 through the through hole 2, the top ring 10 and the water inlet 17 at the upper end of the nozzle 9, and finally sprays out from the atomizing nozzle hole 11 at the lower end of the nozzle 9. When a certain area needs to increase the intensity of dust suppression spraying, the movable nozzle assembly of other areas that do not need dust suppression can be moved to the position of the through hole 2 in the area that needs spraying. This can save water and concentrate greater water pressure and spray volume to spray and suppress dust in areas with large dust generation.

[0034] The above embodiments illustrate the basic principles and features of this utility model. However, the above descriptions are merely preferred embodiments and are not limited to these embodiments. Those skilled in the art, inspired by this patent, can make many modifications and improvements without departing from the spirit and scope of the claims, all of which fall within the protection scope of this utility model. Therefore, the patent and its scope of protection should be determined by the appended claims.

Claims

1. A coal mine spray dust-settling device based on mobile adjustment of dust-settling position, characterized in that: The utility model discloses a movable nozzle assembly, a plurality of movable nozzle assemblies are installed on a high-pressure water pipe, the water flow direction in the high-pressure water pipe is from front to back, a plurality of through holes are formed in the bottom of the high-pressure water pipe along the water flow direction, and the inside of the high-pressure water pipe is provided with water pressure valves for closing the through holes.

2. The coal mine spray dust-settling device based on mobile adjustment according to dust-settling position according to claim 1, characterized in that: The water pressure valve comprises a valve plate, the through hole is a stepped hole with a large inner diameter and a small outer diameter, the valve plate is a convex structure matched with the stepped hole, the front side of the valve plate is rotationally connected to the inner wall of the high-pressure water pipe through a hinge, and the bottom surface of the valve plate is provided with a sealing gasket matched with the stepped surface of the through hole.

3. The coal mine spray dust-settling device based on mobile adjustment according to dust-settling position according to claim 2, characterized in that: The top surface of the valve plate is integrally provided with a water-wedge block, and the top surface of the water-wedge block is a water-wedge surface with a low front and a high back.

4. The coal mine spray dust-settling device based on the adjustment of movement according to dust generation position according to claim 2 or 3, characterized in that: The movable nozzle assembly comprises a sliding sleeve, an internally-threaded sleeve and a nozzle, the sliding sleeve is slidingly connected to the high-pressure water pipe, the upper end of the internally-threaded sleeve is fixedly connected to the bottom of the sliding sleeve, the center line of the internally-threaded sleeve is perpendicular to the center line of the sliding sleeve and is in internal communication, the upper outer circle of the nozzle is cylindrical, the lower outer circle of the nozzle is conical, the upper outer circle of the nozzle is threadedly connected to the inner circle of the internally-threaded sleeve through a sealing pipe, the upper end of the nozzle is provided with a water inlet, the upper end of the internally-threaded sleeve is provided with a top ring outside the water inlet for pressing the bottom surface of the valve plate, and the lower end of the nozzle is provided with an atomizing nozzle.

5. The coal mine spray dust-settling device based on mobile adjustment according to dust-settling position according to claim 4, characterized in that: The inner circle of the lower end of the internally-threaded sleeve is provided with a limiting ring.

6. The coal mine spray dust-settling device based on mobile adjustment according to dust-settling position according to claim 4, characterized in that: The top surface of the nozzle is provided with a rubber sealing seat sleeved outside the top ring, the top surface of the rubber sealing seat is provided with an arc-shaped groove matched with the arc surface of the bottom of the high-pressure water pipe, the upper part of the inner circle of the internally-threaded sleeve is provided with a guide strip parallel to the center line of the internally-threaded sleeve, and the outer circle of the rubber sealing seat is provided with a guide groove matched with the guide strip and slidingly connected to the guide strip.

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