A kind of spray dust-settling device of fully-mechanized coal mining face

Abstract

This utility model relates to the technical field of spray dust suppression devices, and discloses a spray dust suppression device for a roadheader. It includes a threaded head, a water supply pipe fixedly installed at the bottom of the threaded head, a branch pipe fixedly installed at the bottom of the water supply pipe, and a three-stage mist particle covering dust suppression mechanism fixedly installed at the end of the branch pipe away from the water supply pipe. This roadheader spray dust suppression device, through its three-stage mist particle covering dust suppression mechanism, utilizes three high-pressure atomizing nozzles (a first, second, and third nozzles) with different angles and layouts. High-pressure atomizing nozzle a first nozzle blocks upward-rising dust, high-pressure atomizing nozzle a second nozzle captures dust escaping from the edges, and high-pressure atomizing nozzle a third nozzle forms a three-dimensional interception barrier. The three nozzles complement each other in their coverage, effectively covering and suppressing dust in the area above and to the sides of the conveyor belt, while simultaneously blocking dust escape channels, thus improving the overall dust suppression efficiency of the roadheader's transport section.

Description

Technical Field

[0001] This utility model relates to the technical field of spray dust suppression devices, specifically a spray dust suppression device for a roadheader. Background Technology

[0002] The dust suppression spray device for roadheaders is a special equipment used on roadheaders (also known as "mechanized tunneling machines") in underground engineering projects such as coal mines and tunnels to suppress the spread of dust. Its core function is to effectively reduce the dust concentration generated during tunneling operations by spraying water mist, ensuring a safe working environment, reducing occupational health hazards, and preventing safety accidents such as dust explosions.

[0003] In existing technology, the transport section of a roadheader (composed of a scraper conveyor and a belt conveyor) uses an external spraying device when transferring materials to subsequent transport equipment. High-pressure atomizing nozzles are installed above the belt conveyor to spray water mist downwards, achieving secondary dust suppression during transport, improving visibility at the working face, and reducing the risk of explosion. However, in actual use, because the water mist is sprayed downwards, the vertical spraying results in the mist particles only covering a local area above the belt surface. There is a coverage blind spot outside the water mist diffusion angle, which is not covered by the water mist. The area between adjacent nozzles forms a dust escape channel, and dust can still escape. Therefore, it is necessary to improve the roadheader spray dust suppression device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a dust suppression spray device for roadheaders to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust suppression spray device for a roadheader, comprising a threaded head, a water supply pipe fixedly installed at the bottom of the threaded head, a branch pipe fixedly installed at the bottom of the water supply pipe, and a three-stage mist particle covering dust suppression mechanism fixedly installed at the end of the branch pipe away from the water supply pipe.

[0006] Preferably, the three-stage mist particle covering dust suppression mechanism includes a rectangular connecting pipe, which is fixedly installed at the bottom of the branch pipe, and high-pressure atomizing nozzle one, high-pressure atomizing nozzle two and high-pressure atomizing nozzle three are fixedly installed on the outside of the rectangular connecting pipe.

[0007] Preferably, the high-pressure atomizing nozzle is located at the bottom of the top pipe of the rectangular connecting pipe, and the high-pressure atomizing nozzle adopts a 15° backward tilt angle.

[0008] Preferably, the second high-pressure atomizing nozzle is located on the front of the outer pipe of the rectangular connecting pipe, and the second high-pressure atomizing nozzle adopts a 30° outward expansion angle.

[0009] Preferably, the high-pressure atomizing nozzle three is disposed on the upper and lower sides of the bottom pipe of the rectangular connecting pipe, and the high-pressure atomizing nozzle three adopts a 45° opposing cross spray.

[0010] Preferably, the coverage area of ​​the first high-pressure atomizing nozzle is a longitudinal trapezoid, the coverage area of ​​the second high-pressure atomizing nozzle is a transverse fan shape, and the coverage area of ​​the third high-pressure atomizing nozzle is a diamond-shaped interwoven mist network.

[0011] Compared with the prior art, this utility model provides a dust suppression spray device for roadheaders, which has the following beneficial effects:

[0012] This dust suppression spray device for roadheaders utilizes a three-stage mist coverage mechanism. During operation, it employs three high-pressure atomizing nozzles (nozzle 1, nozzle 2, and nozzle 3) with different angles and layouts. Nozzle 1 blocks upward-rising dust, nozzle 2 captures dust escaping from the edges, and nozzle 3 forms a three-dimensional interception barrier. The complementary coverage of the three nozzles effectively suppresses dust in the area above and to the sides of the conveyor belt, while simultaneously blocking dust escape routes, thus improving the overall dust suppression efficiency of the roadheader's transport section. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the rear view of the present utility model.

[0016] Figure 3 This is a schematic diagram of the external structure of the three-stage mist particle covering dust suppression mechanism of this utility model.

[0017] In the diagram: 1. Threaded head installation; 2. Three-stage mist dust suppression mechanism; 21. Rectangular connecting pipe; 22. High-pressure atomizing nozzle one; 23. High-pressure atomizing nozzle two; 24. High-pressure atomizing nozzle three; 3. Water supply pipe; 4. Branch pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Example:

[0021] Please see Figure 1-3 This utility model provides a technical solution: a dust suppression spray device for a roadheader, including a threaded head 1, a water supply pipe 3 fixedly installed at the bottom of the threaded head 1, a branch pipe 4 fixedly installed at the bottom of the water supply pipe 3, and a three-stage mist particle covering dust suppression mechanism 2 fixedly installed at the end of the branch pipe 4 away from the water supply pipe 3.

[0022] The dust escape rate is reduced through the coordinated design of the bifurcation pipe 4 and the three-stage mist particle covering dust suppression mechanism 2.

[0023] Furthermore, the three-stage mist particle covering dust suppression mechanism 2 includes a rectangular connecting pipe 21, which is fixedly installed at the bottom of the branch pipe 4. High-pressure atomizing nozzle 1 22, high-pressure atomizing nozzle 23 and high-pressure atomizing nozzle 3 24 are fixedly installed on the outside of the rectangular connecting pipe 21. The symmetrical structure of the rectangular connecting pipe 21 can reduce the water flow resistance. With the three nozzles with different functions, a three-dimensional mist field with longitudinal progression and transverse interweaving is formed, which improves the dust collection efficiency, reduces the blind area, and improves the mist particle coverage rate.

[0024] Furthermore, the high-pressure atomizing nozzle 22 is located at the bottom of the top pipe of the rectangular connecting pipe 21, and the high-pressure atomizing nozzle 22 adopts a 15° backward tilt angle. The 15° backward tilt angle design can form a trapezoidal fog screen with denser front and sparser back. The backward tilt spray can suppress rebound dust and improve working visibility.

[0025] Furthermore, the high-pressure atomizing nozzle 23 is located on the front of the outer pipe of the rectangular connecting pipe 21, and the high-pressure atomizing nozzle 23 adopts a 30° outward expansion angle. The 30° outward expansion angle can form an air curtain barrier on both sides of the belt, reduce the amount of dust escaping from the edge, and effectively suppress lateral airflow disturbance.

[0026] Furthermore, the high-pressure atomizing nozzle 3 24 is set on the upper and lower sides of the bottom pipe of the rectangular connecting pipe 21, and the high-pressure atomizing nozzle 3 24 adopts 45° opposing cross spray. The diamond-shaped interwoven mist network formed by the 45° opposing cross spray can form a suspended water film to achieve the sedimentation of large particles.

[0027] Furthermore, the coverage area of ​​high-pressure atomizing nozzle 1 22 is a longitudinal trapezoid, the coverage area of ​​high-pressure atomizing nozzle 23 is a transverse fan shape, and the coverage area of ​​high-pressure atomizing nozzle 3 24 is a diamond-shaped interwoven mist net. The coverage patterns of the three nozzles are complementary. The longitudinal trapezoidal mist curtain blocks the dust diffusion path, the transverse fan-shaped mist field seals the edge gaps, and the diamond-shaped interwoven net covers the core dust area, thereby improving the overall dust reduction efficiency.

[0028] In actual operation, when this device is used, the dust suppression spray system of the roadheader, through the three-stage mist particle coverage dust suppression mechanism 2, utilizes three high-pressure atomizing nozzles 1 22, 23, and 3 24 with different angles and layouts. High-pressure atomizing nozzle 1 22 blocks the upward dust at the front end, high-pressure atomizing nozzle 2 23 captures dust escaping from the edge, and high-pressure atomizing nozzle 3 24 forms a three-dimensional interception barrier. The three nozzles complement each other in their coverage patterns, covering and suppressing dust in the area above and to the sides of the conveyor belt, while blocking the dust escape channels and preventing dust from escaping, thus improving the overall dust suppression efficiency of the roadheader's transport section.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A spraying dust-settling device for a fully-mechanized coal mining face, comprising a mounting threaded head (1), characterized in that: A water supply pipe (3) is fixedly installed at the bottom of the threaded head (1), a branch pipe (4) is fixedly installed at the bottom of the water supply pipe (3), and a three-stage mist particle covering dust suppression mechanism (2) is fixedly installed at the end of the branch pipe (4) away from the water supply pipe (3).

2. The dust suppression spray device for a roadheader according to claim 1, characterized in that: The three-stage mist dust suppression mechanism (2) includes a rectangular connecting pipe (21), which is fixedly installed at the bottom of the branch pipe (4). High-pressure atomizing nozzle one (22), high-pressure atomizing nozzle two (23) and high-pressure atomizing nozzle three (24) are fixedly installed on the outside of the rectangular connecting pipe (21).

3. The dust suppression spray device for a roadheader according to claim 2, characterized in that: The high-pressure atomizing nozzle (22) is located at the bottom of the top pipe of the rectangular connecting pipe (21), and the high-pressure atomizing nozzle (22) adopts a 15° backward tilt angle.

4. The dust suppression spray device for a roadheader according to claim 2, characterized in that: The high-pressure atomizing nozzle (23) is located on the front of the outer pipe of the rectangular connecting pipe (21), and the high-pressure atomizing nozzle (23) adopts a 30° outward expansion angle.

5. A dust suppression spray device for a roadheader according to claim 2, characterized in that: The high-pressure atomizing nozzle three (24) is set on the upper and lower sides of the bottom pipe of the rectangular connecting pipe (21), and the high-pressure atomizing nozzle three (24) adopts a 45° opposing cross spray.

6. A dust suppression spray device for a roadheader according to claim 2, characterized in that: The high-pressure atomizing nozzle one (22) has a longitudinal trapezoidal coverage area, the high-pressure atomizing nozzle two (23) has a transverse fan-shaped coverage area, and the high-pressure atomizing nozzle three (24) has a diamond-shaped interwoven mist network coverage area.

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