Novel spray head for fully-mechanized coal mining heading machine

Abstract

The utility model discloses a novel spray head for a fully-mechanized coal mining heading machine. The novel spray head comprises a first spray nozzle, a second spray nozzle, a third spray nozzle and an inner pipe, one end of the first nozzle is connected with water supply equipment; the other end of the first nozzle extends into the second nozzle and is fixedly connected with the inner pipe; the inner pipe is provided with a through pressurizing water hole; the second nozzle is provided with a first cavity, and a water outlet hole is formed in the part, located in the first cavity, of the first nozzle. The third nozzle penetrates through the second nozzle and is connected with the first chamber. According to the spray head, due to the arrangement of the first nozzle, the diamond hole and the inner pipe, three-stage water pressure pressurization can be carried out on high-pressure water flow connected from the outside, and therefore the high-pressure water flow sprayed out of the front end of the inner pipe forms a water jet cutter with high cutting capacity to cut surrounding rock, and the working efficiency of a fully-mechanized coal mining heading machine is improved. The hole diameter of the pressurizing water hole of the inner pipe can be adjusted according to the property of an operation object so as to cope with rocks with different hardness, and then the tunneling efficiency and the dust falling effect of the fully-mechanized coal mining tunneling machine are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine comprehensive mining and tunneling, in particular to a new type of nozzle for a comprehensive mining and tunneling machine. Background Art

[0002] Most of the tunneling operations in coal mining face are mainly carried out by tunneling machines. Existing tunneling machines are usually equipped with spray systems to reduce dust in the fully-mechanized mining face and to physically cool down the equipment during operation.

[0003] However, the existing spray system is heavy, the nozzles are single-function, and the dust reduction area and temperature reduction area covered during operation are small, which cannot achieve the purpose of efficient dust reduction and temperature reduction.

[0004] Therefore, it is necessary to improve the existing nozzles so that they can emit ultra-high pressure water jets, which can not only improve the excavation efficiency but also have efficient dust reduction and cooling effects. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a new type of nozzle for a fully mechanized mining and tunneling machine.

[0006] The technical solution of the utility model is:

[0007] A new type of nozzle for a comprehensive mining and tunneling machine includes a first nozzle, a second nozzle, a third nozzle, and an inner tube; one end of the first nozzle is connected to a water supply device; the other end of the first nozzle extends into the second nozzle and is fixedly connected to the inner tube; the inner tube is provided with a through-going pressurized water hole; the second nozzle is provided with a first chamber, and the first nozzle is provided with a water outlet hole in the part located in the first chamber; the third nozzle penetrates the second nozzle and is connected to the first chamber.

[0008] Furthermore, the second nozzle includes a base and a conical platform fixedly connected to the base; the first nozzle is provided with an external thread, and the base is threadedly connected to the first nozzle; a first chamber is provided inside the conical platform, and a threaded mounting hole is provided along the outer surface of the conical platform; a third nozzle is installed in the threaded mounting hole.

[0009] Furthermore, the second nozzle is also provided with a hollow mounting column fixedly connected to the conical platform; the hollow mounting column is provided with a second chamber, and a diamond hole is provided in the second chamber; the diamond hole is conical, and its wide end is fixedly connected to the small-diameter port of the first nozzle, and its narrow end is fixedly connected to the pipe mouth of the inner tube.

[0010] Furthermore, the small-diameter port of the first nozzle is flush with the narrow opening of the conical platform.

[0011] Further, the included angle between the third nozzle 3 and the vertical line is 30° - 60°.

[0012] Further, the first nozzle is arranged in a conical shape; the base is integrally formed with the conical platform; the conical platform is fixedly connected by welding or embedded fixing with the hollow mounting column.

[0013] Further, the length of the first nozzle is 10 cm - 15 cm; the cone angle of the first nozzle is set to 0.163° - 0.245°; the diameter of the small-diameter port of the first nozzle is set to 0.5 mm - 0.6 mm.

[0014] Further, the side surface of the first nozzle is provided with water outlet holes with a diameter ≤ 1 mm, and the water outlet holes are located inside the first chamber; the inner pipe is arranged below the diamond hole and is threadedly connected with the hollow mounting column; the length of the inner pipe is 15 cm - 25 cm.

[0015] Further, a section of outer pipe is wrapped around the outer surface of the inner pipe.

[0016] Further, a section of snap tube is arranged on the outer surface of the inner pipe near its water outlet port; a threaded ring and raised patterns are arranged inside the snap tube.

[0017] Advantages of the present utility model:

[0018] 1. For the spray head described in the present utility model, by arranging the first nozzle, diamond hole and inner pipe, the high-pressure water flow connected externally can be pressurized in three levels of water pressure, so that the high-pressure water flow ejected from the front end of the inner pipe forms a water jet with strong cutting ability, achieving the effect of cutting the surrounding rock and improving the operation efficiency of the fully-mechanized tunneling machine.

[0019] 2. For the spray head described in the present utility model, the diameter of the pressurizing water holes of the inner pipe can be selected according to the nature of the operation object, and the water pressure is adjusted by replacing the diameter of the inner pipe, so as to cope with rocks of different hardness, and further significantly improve the tunneling efficiency and dust reduction effect of the fully-mechanized tunneling machine.

[0020] 3. For the spray head described in the present utility model, the first nozzle, the second nozzle and the third nozzle can all be fixedly connected in a detachable connection manner, with a simple structure. When parts are damaged and inner pipes with different inner diameters are replaced, rapid replacement operation can be achieved, avoiding the delay in replacing parts caused by fixing methods such as welding, and further improving the operation efficiency of the fully-mechanized tunneling machine. Description of the Drawings

[0021] Figure 1 : Schematic diagram of the overall structure of the spray head in the exemplary embodiment;

[0022] Figure 2: Schematic cross-sectional structure diagram of the nozzle in the exemplary embodiment.

[0023] Symbol Explanation

[0024] 1 - First nozzle, 101 - External thread;

[0025] 2 - Second nozzle, 201 - Base, 202 - Tapered table, 203 - First chamber, 204 - Hollow mounting post, 205 - Second chamber, 206 - Diamond hole;

[0026] 3 - Third nozzle;

[0027] 4 - Inner tube, 401 - Pressurized water hole;

[0028] 5 - Outer tube;

[0029] 6 - Buckle tube;

[0030] 7 - Rubber gasket. Detailed Implementation Manner

[0031] It should be noted that:

[0032] 1. Certain terms are used in this disclosure to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. Therefore, this specification and the claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of components as the criterion for distinction;

[0033] 2. Unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", etc. in this disclosure should be understood in a broad sense. Those of ordinary skill in the art should understand the specific meanings of the above terms in this utility model according to specific circumstances;

[0034] 3. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should be the ordinary meanings understood by those of ordinary skill in the field to which this disclosure belongs. The "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar terms mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0035] The present utility model will be described in detail below in the form of embodiments with reference to the accompanying drawings.

[0036] As shown in the attached Figure 1 and the attached Figure 2As shown in the figure, this embodiment describes a new type of nozzle for a fully-mechanized tunneling machine, including a first nozzle 1, a second nozzle 2, a third nozzle 3, and an inner pipe 4.

[0037] The first nozzle 1 is set to be conical, used to connect the water supply pipe and generate the first-stage high-pressure water flow.

[0038] To obtain a better high-pressure water flow:

[0039] Set the length of the first nozzle 1, that is, the distance between the large-diameter port and the small-diameter port of the first nozzle 1, to be 10 cm - 15 cm;

[0040] Set the cone angle of the first nozzle 1 to be 0.163 degrees - 0.245 degrees;

[0041] Set the diameter of the small-diameter port of the first nozzle 1 to be 0.5 mm - 0.6 mm.

[0042] There is a section of external thread 101 on the outer surface of the first nozzle 1. The external thread 101 is used to connect external water supply equipment, such as a high-pressure water inlet pipe; at the same time, the external thread 101 is also used to install the second nozzle 2 located below the first nozzle 1.

[0043] Preferably, the external thread 101 can also be replaced by an external thread sleeve.

[0044] The second nozzle 2 includes a base 201, a conical platform 202 located on the base 201, and a hollow mounting post 204 located on the conical platform 202.

[0045] In a preferred manner: the base 201, the conical platform 202, and the hollow mounting post 204 are integrally formed; or, at least the base 201 and the conical platform 202 are integrally formed, and the conical platform 202 and the hollow mounting post 204 can be fixedly installed or detachably installed by means such as welding or embedding.

[0046] There is a section of internal thread inside the base 201, and this internal thread cooperates with the external thread 101 of the first nozzle 1 to form a detachable threaded connection.

[0047] There is a first chamber 203 inside the conical platform 202, and a plurality of threaded mounting holes are arranged along its outer surface. The threaded mounting holes penetrate the side surface of the conical platform 202 and communicate with the first chamber 203, and are used to install the third nozzle 3.

[0048] The third nozzle 3 is used to spray high-pressure water mist to reduce the dust content in the working environment.

[0049] Preferably, to obtain a better spraying effect, set the angle between the third nozzle 3 and the vertical line to be 30° - 60°.

[0050] A plurality of water outlet holes with a diameter of ≦1 mm are formed on the side of the first nozzle 1 . The water outlet holes are located inside the first chamber 203 and further located above the inside of the first chamber 203 .

[0051] After the base 201 and the first nozzle 1 are installed together, the tip of the first nozzle 1 passes through the base 201 and the inside of the conical platform 202 , and the small-diameter port of the first nozzle 1 is flush with the narrow opening of the conical platform 202 .

[0052] A second chamber 205 is provided inside the hollow mounting column 204 , and a diamond hole 206 is installed inside the second chamber 205 .

[0053] The diamond hole 206 is conical, with its wide end fitting the small-diameter port of the first nozzle 1, and its narrow end fitting the inner tube 4 below it. The diamond hole 206 is used to change the diameter of the water flow sprayed by the first nozzle 1, so that the water flow diameter is further reduced to generate a second-level high-pressure water flow, thereby obtaining a further water flow pressurization effect.

[0054] The inner tube 4 is arranged below the diamond hole 206 and is threadedly connected to the hollow mounting column 204. A pressurized water hole 401 is provided through the inner tube 4 to generate a third level of high pressure water flow, which is used to further increase the water flow injection pressure.

[0055] In order to obtain a better water flow pressurization effect, the length of the inner tube 4 is set to be in the range of 15 cm-25 cm.

[0056] As a preferred method, in this embodiment:

[0057] 1. Silicone gaskets are respectively provided at the connection points between the diamond hole 206 and the first nozzle 1 and the inner tube 4 to prevent water leakage.

[0058] 2. The inner tube 4 is arranged to be replaceable, that is, different inner tubes 4 are provided with pressurized water holes of different diameters to be suitable for rock working environments of different strengths.

[0059] 3. In order to increase the working strength of the inner tube 4, an outer tube 5 is provided outside the inner tube 4.

[0060] 4. To further increase the working strength and environmental adaptability of the inner tube 4, a section of a buckle tube 6 is provided near the port of the inner tube 4. A threaded ring and a raised pattern are provided inside the buckle tube 6. The threaded ring can facilitate the disassembly and assembly of the buckle tube 6, and the raised pattern can facilitate the fixing of the inner tube 4 to prevent the inner tube 4 from slipping.

[0061] 5. A rubber gasket 7 is also provided at the connection between the buckle tube 6 and the outer tube 5, so as to further stabilize the buckle tube 6 and prevent it from slipping.

[0062] S1, firmly mounting the diamond hole in the second chamber of the hollow mounting column;

[0063] In S2, screws can be used to stably install the hollow mounting post and the conical platform of the second nozzle, and make the first nozzle fit seamlessly with the diamond hole;

[0064] In S3, a plurality of third nozzles are threadedly installed at the threaded mounting holes of the conical platform, and screws can be used for further reinforcement;

[0065] In S4, according to the rock hardness surveyed during on-site actual operation, an inner pipe with a suitable size of the pressurized water hole is selected, and the inner pipe is stably installed with the hollow mounting post;

[0066] In S5, the inner pipe is tightly fixed through the outer pipe and / or the silicone tube to prevent the inner pipe from sliding during operation, so as to avoid losses;

[0067] In S6, the external thread of the first nozzle is connected to the external high-pressure water delivery device to complete the installation of the entire nozzle.

[0068] When high-pressure water flows through the first nozzle, most of the high-pressure water will flow into the diamond hole from the first nozzle, and a small part of the water fills the first chamber from the water outlet hole of the first nozzle;

[0069] The high-pressure water entering the diamond hole is pressurized again at the diamond hole, which can significantly increase the flow rate of the high-pressure water;

[0070] The high-pressure water flowing into the inner pipe from the diamond hole is pressurized again by the inner pipe and shoots out from the outlet of the inner pipe, forming a high-pressure water flow with high speed, long distance and strong impact force;

[0071] The high-pressure water in the first chamber sprays out from the third nozzle, forming a large-area water mist area, achieving good effects of efficient dust reduction and efficient temperature reduction.

[0072] Six third nozzles can be set at the conical platform. Among them, the 3 inner third nozzles mainly play a role in temperature reduction, and the 3 outer third nozzles are mainly used for dust reduction.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A new type of nozzle for a fully mechanized mining tunneling machine, characterized in that: It includes a first nozzle, a second nozzle, a third nozzle, and an inner tube; One end of the first nozzle is connected to a water supply device; The other end of the first nozzle extends into the second nozzle and is fixedly connected to the inner tube; The inner tube is provided with a through pressurized water hole; The second nozzle is provided with a first chamber, and the first nozzle is provided with a water outlet at a portion located in the first chamber; The third nozzle passes through the second nozzle and is connected to the first chamber.

2. A new type of nozzle for a fully mechanized mining and tunneling machine according to claim 1, characterized in that: The second nozzle comprises a base and a conical platform fixedly connected to the base; The first nozzle is provided with an external thread, and the base is threadedly connected to the first nozzle; A first chamber is provided inside the conical platform, and threaded mounting holes are provided along the outer surface of the conical platform; The threaded mounting hole is mounted with a third nozzle.

3. A new type of nozzle for a fully mechanized mining and tunneling machine according to claim 2, characterized in that: The second nozzle is also provided with a hollow mounting column fixedly connected to the conical stage; The hollow mounting column is provided with a second chamber, and a diamond hole is provided in the second chamber; The diamond hole is conical, with a wide end fixedly connected to the small-diameter port of the first nozzle, and a narrow end fixedly connected to the pipe mouth of the inner pipe.

4. A new type of nozzle for a fully mechanized mining and tunneling machine according to claim 2, characterized in that: The small-diameter port of the first nozzle is flush with the narrow mouth of the conical stage.

5. The novel nozzle for a fully mechanized mining and tunneling machine according to claim 2 is characterized in that: The included angle between the third nozzle and the vertical line is 30°-60°.

6. The novel nozzle for a fully mechanized mining and tunneling machine according to claim 3 is characterized in that: The first nozzle is configured in a cone shape; the base and the cone platform are integrally formed; the cone platform is fixed to the hollow mounting column by welding or embedding.

7. The novel nozzle for a fully mechanized mining and tunneling machine according to claim 1 is characterized in that: The length of the first nozzle is 10 cm to 15 cm; The cone angle of the first nozzle is set to 0.163 degrees to 0.245 degrees; The diameter of the small-diameter port of the first nozzle is set to 0.5 mm-0.6 mm.

8. The novel nozzle for a fully mechanized mining and tunneling machine according to claim 3 is characterized in that: A water outlet hole with a diameter of ≦1 mm is provided on the side of the first nozzle, and the water outlet hole is located inside the first chamber; The inner tube is arranged below the diamond hole and is threadedly connected to the hollow mounting column; The length of the inner tube is 15 cm to 25 cm.

9. A new type of nozzle for a fully mechanized mining and tunneling machine according to any one of claims 1 to 8, characterized in that: The outer surface of the inner tube is wrapped with a section of outer tube.

10. A new type of nozzle for a fully mechanized mining and tunneling machine according to any one of claims 1 to 8, characterized in that: The outer surface of the inner tube is provided with a section of clip tube near its water outlet port; The buckle tube is provided with a threaded ring and raised patterns inside.

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