A mine-used cyclone orifice dust removal device

Abstract

The present application relates to a kind of mine cyclone orifice dust removal device, the mine cyclone orifice dust removal device includes dust pipe, primary separation mechanism is arranged in dust pipe rear end, the discharge end of primary separation mechanism is connected with primary slag collecting box;Secondary separation mechanism is arranged in primary separation mechanism rear end, the discharge end of the secondary separation mechanism is connected with secondary slag collecting box;Connecting pipe is used to communicate the gas outlet end of primary separation mechanism with the feed end of secondary separation mechanism, and dust removal spray head is equipped on connecting pipe.The mine cyclone orifice dust removal device of the present application is used, first, the large particle coal, rock slag and gas are separated by dry separation method, then the dust mixed in gas is adsorbed by wet separation method, so that the large particle coal, rock slag and water are avoided to form slurry and block cyclone separator, reduce the working time of staff maintenance primary slag collecting box, reduce cost.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, and in particular to a cyclone-type orifice dust collector for mining. Background Technology

[0002] Currently, dry drilling is generally used in mine production. However, dry drilling inevitably produces coal slag, rock slag, dust, and gas. Coal slag, rock slag, and dust floating in the air can easily affect the cardiopulmonary health of workers. At the same time, if gas is not collected and discharged, it can easily cause gas explosion accidents when it accumulates too much in the mine.

[0003] In existing technologies, cyclone separators are generally used to separate coal slag, rock slag, dust and gas. At the same time, water is sprayed before the coal slag, rock slag and dust enter the cyclone separator to increase their inertia, so that the coal slag, rock slag and dust can be separated from the gas after passing through the cyclone separator, and then the coal slag, rock slag and dust can be collected.

[0004] However, large particles of coal and rock debris can easily combine with water to form a mud-like mixture, which is difficult to remove and remains inside the cyclone separator. This requires frequent maintenance of the cyclone separator, thereby increasing separation costs and reducing construction efficiency. Summary of the Invention

[0005] This invention provides a mining cyclone-type orifice dust collector to solve the technical problems of frequent maintenance and low construction efficiency of cyclone separators.

[0006] To solve the above problems, the present invention provides a mining cyclone-type orifice dust collector with the following technical solution:

[0007] Includes dust collection pipes, which are installed at the borehole to collect coal slag, rock debris, dust, and gas generated during drilling operations;

[0008] A primary separation mechanism is located at the rear end of the dust conveying pipe to separate large particles of coal, rock slag, and gas. The discharge end of the primary separation mechanism is connected to a primary slag collection box.

[0009] A secondary separation mechanism is located at the rear end of the primary separation mechanism to separate dust from gas. The discharge end of the secondary separation mechanism is connected to a secondary slag collection box.

[0010] A connecting pipe is used to connect the air outlet of the primary separation mechanism with the feed inlet of the secondary separation mechanism, and a dust removal nozzle is provided on the connecting pipe. The dust removal nozzle is used to spray high-pressure water and air into the secondary separation mechanism.

[0011] Beneficial Effects: In use, the mine cyclone-type orifice dust collector of this invention first places the dust conveying pipe at the borehole opening. Then, coal slag, rock slag, dust, and gas are fed into the primary separation mechanism through the dust conveying pipe, thereby separating large particles of coal and rock slag from the gas and collecting them in the primary slag collection box. The dust and gas enter the connecting pipe and, under the action of high-pressure water and airflow, enter the secondary separation mechanism. Simultaneously, the high-pressure water flow combines with the dust to form a turbid water flow, thereby removing dust from the gas. In use, the mine cyclone-type orifice dust collector of this invention separates large particles of coal and rock slag through the primary separation mechanism, preventing them from combining with water to form a slurry, thus facilitating the cleaning of the primary slag collection box. At the same time, the high-pressure water flow can quickly adsorb dust from the gas, thereby achieving the separation of dust and gas.

[0012] Furthermore, the dust conveying pipe is also equipped with an ejector nozzle, which is used to spray the airflow flowing towards the primary separation mechanism into the dust conveying pipe to create a negative pressure inside the dust conveying pipe.

[0013] Beneficial effects: Simple structure, facilitating the entry of coal slag, rock slag, dust and gas into the primary separation unit.

[0014] Furthermore, the primary separation mechanism includes two primary cyclone separators, and the secondary separation mechanism includes one secondary cyclone separator; the two primary cyclone separators are arranged at intervals in the left-right direction, and the feed ends of the two primary cyclone separators are connected to the dust conveying pipe, the discharge ends of the two primary cyclone separators are connected to the primary slag collection box, and the air outlet ends of the two primary cyclone separators are connected to the connecting pipe.

[0015] Beneficial effects: Improves separation efficiency and prevents large coal and rock debris from clogging the primary cyclone separator.

[0016] Furthermore, the primary slag collection box is equipped with a pull-out drawer, the inner cavity of which is connected to the discharge end of the two primary cyclone separators.

[0017] Beneficial effect: It facilitates timely cleaning of large particles of coal and rock debris by staff.

[0018] Furthermore, a handle is provided on the rear side wall of the drawer.

[0019] Beneficial effect: Makes it easier for staff to pull out the drawers.

[0020] Furthermore, the gas outlet of the secondary separation mechanism is provided with a gas extraction pipe for extracting gas, and the other end of the gas extraction pipe is provided with a tertiary separation mechanism for drying the gas extracted by the gas extraction pipe and removing any remaining small amount of dust.

[0021] Beneficial effects: Reduces the absorption of heat by moisture evaporation during gas combustion, thereby avoiding incomplete gas combustion that produces more harmful gases such as carbon monoxide.

[0022] Furthermore, the three-stage separation mechanism includes a separation box and a filter element placed inside the separation box. The extraction pipe is an L-shaped pipe, with the horizontal section of the extraction pipe penetrating the side wall of the separation box and the vertical section of the extraction pipe extending downward and penetrating the filter element. A guide pipe is also rotatably mounted on the downward penetrating part of the extraction pipe.

[0023] Beneficial effects: It avoids the gas being sprayed from the extraction pipe onto one spot on the filter element, thus ensuring that all parts of the filter element are fully utilized and extending its service life.

[0024] Furthermore, the filter element includes a PTFE fiber layer placed horizontally within the separation chamber and an activated carbon layer placed above the PTFE fiber layer.

[0025] Beneficial effects: The PTFE fiber layer can adsorb a small amount of dust in the gas, while also inhibiting the accumulation and discharge of static electricity and playing a flame-retardant role. The activated carbon layer can adsorb the moisture in the gas.

[0026] Furthermore, the end of the guide tube away from the extraction tube is closely attached to the filter element, and a rotating rod is connected to the lower end of the guide tube. The rotating rod extends downward and passes through the separation box. A rotating motor is connected to the part of the rotating rod that passes through the separation box, and the rotating motor drives the rotating rod to rotate.

[0027] Beneficial effects: It allows the guide tube to run continuously, so that filtration can be carried out at all positions of the filter element, thereby improving the service life of the filter element. Attached Figure Description

[0028] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a mining cyclone-type orifice dust collector according to the present invention;

[0030] Figure 2 This is a schematic diagram of the primary separation mechanism and the secondary separation mechanism of the present invention;

[0031] Figure 3 for Figure 2 Top view;

[0032] Figure 4 for Figure 3Sectional view of AA;

[0033] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0034] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Dust conveying pipe; 2. Primary separation mechanism; 3. Primary slag collection box; 4. Secondary separation mechanism; 5. Secondary slag collection box; 6. Connecting pipe; 7. Dust removal nozzle; 8. Ejector nozzle; 9. Primary cyclone separator; 10. Drawer; 11. Handle; 12. Drainage pipe; 13. Tertiary separation mechanism; 14. Separation box; 15. Guide pipe; 16. PTFE fiber layer; 17. Activated carbon layer; 18. Rotating rod; 19. T-connector; 20. Sewage outlet; 21. Support edge; 22. Support collar; 23. Guide section; 24. Rotating motor; 25. Discharge pipe; 26. Secondary cyclone separator. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0039] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0040] Embodiment 1 of a mining cyclone orifice dust collector provided by the present invention:

[0041] like Figure 1 As shown, a mining cyclone-type orifice dust collector of the present invention includes a dust conveying pipe 1, a primary separation mechanism 2, a secondary separation mechanism 4, and a connecting pipe 6.

[0042] The front end of the dust conveying pipe 1 is connected to the borehole of the drilling operation to collect the coal slag, rock debris, dust, and gas generated during the drilling operation into the dust conveying pipe 1. Near the borehole, the dust conveying pipe 1 is also equipped with an ejector nozzle 8. The ejector nozzle 8 has an L-shaped structure, and its horizontal section is located inside the dust conveying pipe 1. The horizontal section of the ejector nozzle 8 has its opening facing rearward, so as to spray an airflow from front to back into the dust conveying pipe 1, thereby creating a negative pressure space at the front end of the dust conveying pipe 1. This allows the coal slag, rock debris, dust, and gas generated during the drilling operation to enter the dust conveying pipe 1 and move towards the rear end.

[0043] like Figure 3 and Figure 4 As shown, the primary separation mechanism 2 includes two primary cyclone separators 9 arranged at intervals along the left-right direction. The feed ends of the two primary cyclone separators 9 are arranged parallel to each other on opposite sides of the two primary cyclone separators 9, and both feed ends of the primary cyclone separators 9 are connected to the dust conveying pipe 1. The discharge ends of the two primary cyclone separators 9 are connected to the primary slag collection box 3 to separate large particles of coal, rock slag, and gas and collect them in the primary slag collection box 3.

[0044] To facilitate the collection and handling of large coal and rock debris in the primary slag collection box 3, a drawer 10 is slidably mounted on the rear side wall of the primary slag collection box 3, and the drawer 10 is provided with a handle 11 for pulling out the drawer 10.

[0045] like Figure 3 As shown, one end of the connecting pipe 6 is connected to a three-way pipe 19, and the other two ends of the three-way pipe 19 are respectively connected to the air outlets of the two primary cyclone separators 9 of the primary separation mechanism 2. The connecting pipe 6 is equipped with a dust removal nozzle 7, which has an L-shaped structure and a horizontal section located inside the connecting pipe 6. The horizontal section is used to spray high-pressure water and air away from the primary separation mechanism 2 so that the high-pressure water can adsorb the dust mixed in the gas.

[0046] like Figure 3 and Figure 5 As shown, the secondary separation mechanism 4 includes a secondary cyclone separator 26. The feed end of the secondary cyclone separator 26 is connected to the end of the connecting pipe 6 away from the tee pipe 19, so that the dust and gas discharged along the primary separation mechanism 2 can enter the secondary separation mechanism 4 through the connecting pipe 6. The discharge end of the secondary cyclone separator 26 is connected to a secondary slag collection box 5, so as to collect the wastewater mixed with dust and gas after separation in the secondary separation mechanism 4. At the same time, the secondary slag collection box 5 is also provided with a drain outlet 20 to facilitate the discharge of wastewater.

[0047] In this embodiment, both the ejector nozzle 8 and the dust removal nozzle 7 are connected to a power source for gas and fluid injection, and the power source is connected to a power supply as needed.

[0048] In this embodiment, the primary cyclone separator 9 and the secondary cyclone separator 26 are both existing cyclone separators, and their specific structures and working principles will not be described in detail here.

[0049] In use, the cyclone-type orifice dust collector of the present invention first connects the dust conveying pipe 1 to the orifice of the drilling operation, and then sprays airflow into the dust conveying pipe 1 through the ejector nozzle 8, thereby creating a negative pressure at the front end of the dust collector pipe, which in turn draws coal slag, rock slag, dust and gas in the orifice into the dust collector pipe and discharges them into the two primary cyclone separators 9 of the primary separation mechanism 2. In the primary separation mechanism 2, large particles of coal, rock slag and gas are separated and collected in the primary slag collection box 3. Then, high-pressure water flow and airflow are sprayed into the connecting pipe 6 through the dust collector nozzle 7, which causes the dust still present in the gas to merge with the water flow to form turbid wastewater. At the same time, the wastewater is collected in the secondary slag collection box 5 after passing through the secondary separation mechanism 4, while the gas is discharged along the discharge end of the secondary separation mechanism 4.

[0050] The mining cyclone orifice dust collector of the present invention first separates large particles of coal, rock slag and gas through dry separation, and then adsorbs the dust mixed in the gas through wet separation. This avoids the large particles of coal and rock slag from mixing with water to form mud that blocks the cyclone separator, reduces the working time of workers to maintain the primary slag collection box and reduces costs.

[0051] Embodiment 2 of the cyclone-type orifice dust collector for mining provided by the present invention:

[0052] The main difference between it and Example 1 is that in Example 1, the gas is discharged and collected through the outlet of the secondary separation mechanism 4.

[0053] In this embodiment, to prevent moisture carried in the gas from affecting the degree of combustion, a tertiary separation mechanism 13 is provided at the outlet of the secondary separation mechanism 4, such as... Figure 1 As shown, the three-stage separation mechanism 13 includes a separation chamber 14 and a filter element disposed within the separation chamber 14.

[0054] The filter element is horizontally placed inside the separation chamber 14 and divides the inner cavity of the separation chamber 14 into upper and lower parts. The filter element includes a PTFE fiber layer 16 horizontally placed inside the separation chamber 14 and an activated carbon layer 17 placed above the PTFE fiber layer 16. The PTFE fiber layer 16 can absorb a small amount of dust carried in the gas and can also be flame-retardant and antistatic. The activated carbon layer 17 is used to absorb the moisture carried in the gas to facilitate the subsequent combustion treatment of the gas.

[0055] The separation box 14 is equipped with a discharge pipe 25, which is located above the filter element.

[0056] The separation box 14 is also connected to a drain pipe 12, which is an L-shaped pipe. One end of the horizontal section of the drain pipe 12 is connected to the air outlet of the secondary separation mechanism 4, and the other end extends through the side wall of the separation box 14 to the top of the filter element. The vertical section of the drain pipe 12 passes through the filter element and extends to the bottom of the filter element. A support edge 21 is provided on the circumference of the vertical section below the filter element.

[0057] A guide tube 15 is rotatably mounted on the extraction tube 12. The upper end of the guide tube 15 is provided with a support collar 22 that is adapted to the aforementioned support edge 21. The support collar 22 is sleeved on the support edge 21. The lower end of the guide tube 15 is also provided with two guide sections 23 that are evenly distributed around the axis of the guide tube 15. The end of the guide section 23 away from the guide tube 15 is in close contact with the bottom of the filter element.

[0058] Below the guide tube 15 and guide section 23, there is also a rotating rod 18. The rotating rod 18 extends downward and passes through the separation box 14. The part of the rotating rod 18 that passes through the separation box 14 is also connected to a rotating motor 24. The output shaft of the rotating motor 24 is used to drive the rotating rod 18 to rotate.

[0059] Embodiment 3 of the cyclone-type orifice dust collector for mining provided by the present invention:

[0060] The main difference between it and Embodiment 1 is that in Embodiment 1, the primary separation mechanism includes two cyclone separators, which are arranged at intervals in the left-right direction, and the feed ends of the two cyclone separators are connected to the dust conveying pipe. The secondary separation mechanism includes one cyclone separator.

[0061] In this embodiment, the primary separation mechanism may also include only one cyclone separator.

[0062] Embodiment 4 of the cyclone-type orifice dust collector for mining provided by the present invention:

[0063] The main difference between it and Example 1 is that in Example 1, a drawer is slidably fitted on the rear side wall of the primary slag collection box.

[0064] In this embodiment, the primary slag collection box may also be without drawers. In this case, whenever the primary slag collection box contains enough coal and rock slag, the device of the present invention is stopped, and then the primary separation mechanism is separated from the primary slag collection box, thereby cleaning the coal and rock slag in the primary slag collection box.

Claims

1. A mine cyclonic orifice dust extraction device characterised in that, include: Dust collection pipes are installed at boreholes to collect coal slag, rock debris, dust, and gas generated during drilling operations. A primary separation mechanism, located at the rear end of the dust conveying pipe, separates large particles of coal, rock slag, and gas. The discharge end of the primary separation mechanism is connected to a primary slag collection box. A secondary separation mechanism, located at the rear end of the primary separation mechanism, separates dust and gas. The discharge end of the secondary separation mechanism is connected to a secondary slag collection box. A connecting pipe connects the gas outlet of the primary separation mechanism to the feed end of the secondary separation mechanism, and the connecting pipe is equipped with a dust removal nozzle for spraying high-pressure water and air into the secondary separation mechanism. The dust conveying pipe is also equipped with an ejector nozzle, which is used to spray the airflow flowing towards the primary separation mechanism into the dust conveying pipe to create a negative pressure inside the dust conveying pipe. The gas outlet of the secondary separation mechanism is provided with a gas extraction pipe for extracting gas, and the other end of the gas extraction pipe is provided with a tertiary separation mechanism for drying the gas extracted by the gas extraction pipe and removing the small amount of residual dust. The three-stage separation mechanism includes a separation box and a filter element placed inside the separation box. The extraction pipe is an L-shaped pipe. The horizontal section of the extraction pipe penetrates the side wall of the separation box, and the vertical section of the extraction pipe extends downward and penetrates the filter element. A guide pipe is also rotatably mounted on the downward part of the extraction pipe that penetrates the filter element. The ejector nozzle has an L-shaped structure and the horizontal section of the ejector nozzle is located inside the dust conveying pipe, with the opening of the horizontal section of the ejector nozzle facing backward. The dust removal nozzle has an L-shaped structure with the horizontal section located inside the connecting pipe. The horizontal section is used to spray high-pressure water and air flow away from the primary separation mechanism. The end of the guide tube away from the extraction tube is in close contact with the filter element. A rotating rod is connected to the lower end of the guide tube. The rotating rod extends downward and passes through the separation box. A rotating motor is connected to the part of the rotating rod that passes through the separation box. The rotating motor drives the rotating rod to rotate.

2. The mining cyclone-type orifice dust collector according to claim 1, characterized in that, The primary separation mechanism includes two primary cyclone separators, and the secondary separation mechanism includes one secondary cyclone separator. The two primary cyclone separators are arranged at intervals in the left-right direction, and the feed ends of the two primary cyclone separators are connected to the dust conveying pipe, the discharge ends of the two primary cyclone separators are connected to the primary slag collection box, and the air outlet ends of the two primary cyclone separators are connected to the connecting pipe.

3. A mining cyclone-type orifice dust collector according to claim 2, characterized in that, The primary slag collection box is equipped with a pull-out drawer, the inner cavity of which is connected to the discharge end of the two primary cyclone separators.

4. A mining cyclone-type orifice dust collector according to claim 3, characterized in that, A handle is provided on the rear side wall of the drawer.

5. A mining cyclone-type orifice dust collector according to claim 1, characterized in that, The filter element includes a PTFE fiber layer placed horizontally inside the separation chamber and an activated carbon layer placed above the PTFE fiber layer.

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