Adjustable nozzle protection device for gob buried pipe gas extraction

Abstract

The application discloses a kind of adjustable pipe orifice protection devices for gob buried pipe gas extraction, it is related to gas extraction technical field, including gas extraction pipe, mounting seat, connector, connecting groove, adjusting mechanism, cleaning mechanism.The adjusting mechanism is set in the application, motor operation drives rotating cylinder to rotate, when inverted U-shaped groove is towards an air inlet, the sliding rod on the baffle in this air inlet slides to the top of inverted U-shaped groove along C-shaped groove, the upward displacement of sliding rod drives the upward displacement of baffle, to open the air inlet;When inverted U-shaped groove rotates away from the air inlet, the air inlet is closed, it is convenient to control the opening of air inlet, to control the direction of gas extraction, according to the accumulation direction of gas adjustment extraction angle, stabilize gas capture efficiency, filter plate is used to filter the gas passing through air inlet, to prevent small particles from entering gas extraction pipe.

Description

Technical Field

[0001] This invention relates to the field of gas extraction technology, specifically an adjustable pipe end protection device for gas extraction via buried pipes in goaf areas. Background Technology

[0002] Goaf is a "cavity" created beneath the surface by human excavation or natural geological movements. The existence of goaf poses significant safety challenges to mine production, as personnel and machinery may fall into it and be injured. Goaf gas drainage is a technique used in coal mining to extract gas released from goaf and surrounding rock, aiming to reduce the safety risks caused by gas accumulation. The gas sources include residual gas from unmined coal and gas released from the roof coal and rock strata, which can easily enter the working face with air leakage and threaten production safety. The main methods include buried pipe drainage, pipe insertion drainage, and borehole drainage.

[0003] When using the buried pipe extraction method, the pipe extends into the goaf and a negative pressure system is used to extract the gas gushing out of the goaf. However, the gas concentration is prone to fluctuations during gas extraction, which can cause the gas accumulation direction to change, thus affecting the gas capture efficiency. In order to achieve the goal of stabilizing the gas capture efficiency, an adjustable pipe opening protection device for buried pipe gas extraction in goaf is provided. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable pipe opening protection device for gas extraction using buried pipes in goaf areas, in order to achieve stable gas capture efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable pipe inlet protection device for gas extraction via buried pipe in a goaf, comprising an extraction pipe, a mounting base disposed below the extraction pipe, a connector fixedly connected to the bottom end of the extraction pipe, a connecting groove formed at the top end of the mounting base, the extraction direction of the extraction pipe being adjusted by an adjustment mechanism, the adjustment mechanism comprising a mounting column fixedly connected to the bottom end of the mounting base, an air inlet formed on the outer wall of the mounting column, a filter plate fixedly connected to the inner wall of the air inlet, a baffle extending into the inner cavity of the air inlet being slidably connected inside the mounting column, a sliding rod fixedly connected to the inner side of the baffle, the sliding rod extending into the inner cavity of the mounting column, and the outer wall of the filter plate being cleaned by a cleaning mechanism.

[0006] As a further embodiment of the present invention: the adjustment mechanism further includes a motor, the motor is installed inside the mounting base, the output end of the motor is connected to a spur gear, the inner wall of the mounting column is rotatably connected to a rotating cylinder, the top end of the rotating cylinder is fixedly connected to a gear ring, the spur gear is in contact with the gear ring, the outer wall of the rotating cylinder is provided with a C-shaped groove, and the outer wall of the rotating cylinder is provided with an inverted U-shaped groove at one end of the C-shaped groove.

[0007] As a further embodiment of the present invention: the cleaning mechanism includes an inclined block, which is fixedly connected to the bottom end of the mounting base and located outside the mounting column. A displacement frame is fixedly connected to the outer wall of the baffle away from the slide rod. A displacement groove is provided on the outer wall of the mounting column for the displacement frame to slide. A movable frame is slidably connected to the outer wall of the displacement frame. A first spring is connected between the displacement frame and the movable frame. A scraper is fixedly connected to the bottom end of the movable frame. A locking block is slidably connected inside the movable frame above the displacement frame. A second spring is connected between the locking block and the movable frame. A locking groove is provided at the top end of the displacement frame. A push plate is slidably connected inside the displacement frame. The bottom end of the push plate extends out of the displacement frame.

[0008] As a further embodiment of the present invention: the outer wall of the connector is provided with an external thread, the inner wall of the connecting groove is provided with an internal thread, and the external thread matches the internal thread.

[0009] As a further embodiment of the present invention: the outer wall of the gear ring is provided with a tooth groove, which meshes with the spur gear.

[0010] As a further embodiment of the present invention: the outer wall of the rotating cylinder is in contact with the inner wall of the mounting column, and the outer wall of one end of the sliding rod is in contact with the inner wall of the C-shaped groove and the inverted U-shaped groove.

[0011] As a further embodiment of the present invention: the outer wall of the displacement frame is in contact with the inner wall of the displacement groove.

[0012] As a further embodiment of the present invention: the bottom end of the inclined block is provided with a first inclined surface.

[0013] As a further embodiment of the present invention: the bottom end of the card block is provided with a second inclined surface, and the outer wall of the bottom end of the card block is in contact with the inner wall of the card slot.

[0014] As a further embodiment of the present invention: the push plate is L-shaped, and the top end of the push plate is in contact with the bottom end of the inner wall of the slot.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting an adjustment mechanism, the motor drives the rotating cylinder to rotate. When the inverted U-shaped groove faces an air inlet, the sliding rod on the baffle inside the air inlet slides along the C-shaped groove to the top of the inverted U-shaped groove. The sliding rod moves upward, causing the baffle to move upward, thereby opening the air inlet. When the inverted U-shaped groove rotates away from the air inlet, the air inlet closes. This facilitates control of the air inlet opening, thereby controlling the direction of gas extraction. The extraction angle is adjusted according to the direction of gas accumulation to stabilize the gas collection efficiency. The filter plate is used to filter the gas passing through the air inlet to prevent fine particles from entering the extraction pipe. 2. By setting up a cleaning mechanism, when an air inlet is opened, the baffle moves upward and the scraper moves simultaneously without contacting the filter plate. When the air inlet is closed, the baffle moves downward, and the baffle drives the scraper downward through the displacement frame and the movable frame. During the downward movement of the scraper, it scrapes the surface of the filter plate, removing impurities adhering to the surface of the filter plate, making it easier for the extracted gas to be filtered through the filter plate. This prevents fine particles from entering the extraction pipe and affecting the operation of the pump. At the same time, when the air inlet is closed, the surface of the air inlet is automatically scraped to prevent the filter plate from becoming blocked and affecting the extraction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the mounting base of the present invention; Figure 3 This is a cross-sectional view of the rotating cylinder of the present invention; Figure 4 This is a schematic diagram of the rotating cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the movable frame of the present invention; Figure 6 This is a schematic diagram of the installation of the baffle of the present invention; Figure 7 This is a partial cross-sectional view of the movable frame of the present invention; Figure 8 This is a cross-sectional view of the displacement frame of the present invention.

[0017] In the diagram: 1. Suction pipe; 2. Connector; 3. Connecting groove; 4. Mounting base; 5. Adjustment mechanism; 501. Mounting column; 502. Air inlet; 503. Filter plate; 504. Baffle; 505. Slide rod; 506. Motor; 507. Spur gear; 508. Gear ring; 509. Rotating cylinder; 510. C-shaped groove; 511. Inverted U-shaped groove; 6. Cleaning mechanism; 601. Inclined block; 602. Displacement groove; 603. Displacement frame; 604. First spring; 605. Movable frame; 606. Scraper; 607. Locking block; 608. Second spring; 609. Locking groove; 610. Push plate. Detailed Implementation

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

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0020] Please see Figures 1 to 8 In this embodiment of the invention, an adjustable pipe opening protection device for gas extraction using buried pipes in goaf areas includes an extraction pipe 1, an installation base 4 is provided below the extraction pipe 1, a connector 2 is fixedly connected to the bottom end of the extraction pipe 1, a connecting groove 3 is provided at the top end of the installation base 4, and the extraction direction of the extraction pipe 1 is adjusted by an adjustment mechanism 5.

[0021] In this embodiment: when installing the mounting base 4, the connector 2 is threaded into the connecting groove 3, thereby installing the mounting base 4 at the bottom end of the extraction pipe 1. When extracting gas, the gas enters the extraction pipe 1 through the mounting base 4.

[0022] Please refer to this carefully. Figures 2 to 5 The adjustment mechanism 5 includes a mounting post 501, which is fixedly connected to the bottom end of the mounting base 4. An air inlet 502 is provided on the outer wall of the mounting post 501. A filter plate 503 is fixedly connected to the inner wall of the air inlet 502. A baffle 504 extending into the inner cavity of the air inlet 502 is slidably connected inside the mounting post 501. A sliding rod 505 is fixedly connected to the inner side of the baffle 504, extending into the inner cavity of the mounting post 501. The outer wall of the filter plate 503 is cleaned by the cleaning mechanism 6. The cleaning operation and adjustment mechanism 5 also includes a motor 506, which is installed inside the mounting base 4. The output end of the motor 506 is connected to a spur gear 507. A rotating cylinder 509 is rotatably connected to the inner wall of the mounting column 501. A gear ring 508 is fixedly connected to the top of the rotating cylinder 509. The spur gear 507 is in contact with the gear ring 508. A C-shaped groove 510 is opened on the outer wall of the rotating cylinder 509. An inverted U-shaped groove 511 is opened at one end of the C-shaped groove 510 on the outer wall of the rotating cylinder 509.

[0023] In this embodiment: When extracting gas, the motor 506 is started. The motor 506 drives the spur gear 507 to rotate, which in turn drives the gear ring 508 to rotate. The gear ring 508 then drives the rotating cylinder 509 to rotate. The rotating cylinder 509 rotates on the inner wall of the mounting column 501. During the rotation of the rotating cylinder 509, the slide rod 505 slides within the C-shaped groove 510 and the inverted U-shaped groove 511. When the inverted U-shaped groove 511 faces an air inlet 502, the slide rod 505 on the baffle 504 inside the air inlet 502 slides along the C-shaped groove 510 to the top of the inverted U-shaped groove 511. The slide rod 505 moves upward, causing the baffle 504 to move upward. The displacement opens the air inlet 502, allowing gas to enter the inner cavity of the mounting column 501 through the air inlet 502 and then into the extraction pipe 1 through the mounting base 4. When the inverted U-shaped groove 511 rotates away from the air inlet 502, the slide rod 505 slides along the inverted U-shaped groove 511 into the C-shaped groove 510. The slide rod 505 moves downward, causing the baffle 504 to move downward, closing the air inlet 502. This facilitates control of the opening of the air inlet 502, thereby controlling the direction of gas extraction. The extraction angle is adjusted according to the direction of gas accumulation to stabilize the gas collection efficiency. The filter plate 503 is used to filter the gas passing through the air inlet 502 to prevent fine particles from entering the extraction pipe 1.

[0024] Please refer to this carefully. Figures 5 to 8The cleaning mechanism 6 includes an inclined block 601, which is fixedly connected to the bottom end of the mounting base 4 and located outside the mounting column 501. A displacement frame 603 is fixedly connected to the outer wall of the baffle 504 on the side away from the slide rod 505. A displacement groove 602 is provided on the outer wall of the mounting column 501 for the displacement frame 603 to slide. A movable frame 605 is slidably connected to the outer wall of the displacement frame 603. A first spring 604 is connected between the displacement frame 603 and the movable frame 605. A scraper 606 is fixedly connected to the bottom end of the movable frame 605. A locking block 607 is slidably connected inside the movable frame 605 above the displacement frame 603. A second spring 608 is connected between the locking block 607 and the movable frame 605. A locking groove 609 is provided at the top end of the displacement frame 603. A push plate 610 is slidably connected inside the displacement frame 603. The bottom end of the push plate 610 extends out of the displacement frame 603.

[0025] In this embodiment: when an air inlet 502 is opened, the baffle 504 moves upward, and the movement of the baffle 504 causes the displacement frame 603 to move synchronously. The displacement frame 603 slides in the displacement groove 602, and the movement of the displacement frame 603 causes the movable frame 605 to move synchronously. The movement of the movable frame 605 causes the scraper 606 to move synchronously. The scraper 606 does not contact the filter plate 503 until the displacement frame 603 slides to the top of the displacement groove 602. During this process, the movable frame 605 contacts the inclined block 601. The movable frame 605 is displaced relative to the displacement frame 603 under force, which squeezes the first spring 604 until the locking block 607 contacts the locking groove 609. The locking block 607 is locked into the locking groove 609 by the elastic force of the second spring 608, and the displacement frame 603 and the movable frame 605 are fixed. At this time, the scraper 606 contacts the outer wall of the mounting column 501. When the air inlet 502 is closed, the baffle 504 moves downward. The baffle 504, through the displacement frame 603 and the movable frame 605, drives the scraper 606 downward. During this downward movement, the scraper 606 scrapes the surface of the filter plate 503, removing impurities adhering to its surface until the air inlet 502 is completely closed. The displacement frame 603 then slides to the bottom of the displacement groove 602. At this point, the push plate 610 contacts the bottom of the displacement groove 602, and the push plate 610, under pressure, shifts relative to the displacement frame 603. The displacement push block 607 is displaced out of the slot 609, releasing the fixation on the movable frame 605. At this time, the movable frame 605 is displaced relative to the displacement frame 603 by the elastic force of the first spring 604, thereby causing the scraper 606 to separate from the outer wall of the mounting column 501, so that the gas extracted can be filtered through the filter plate 503, preventing fine particles from entering the air extraction pipe 1 and affecting the operation of the pump. At the same time, when the air inlet 502 is closed, the surface of the air inlet 502 is automatically scraped to prevent the filter plate 503 from becoming blocked and affecting the extraction efficiency.

[0026] Please refer to this carefully. Figures 1 to 2 The outer wall of the connector 2 is provided with an external thread, and the inner wall of the connecting groove 3 is provided with an internal thread, and the external thread matches the internal thread.

[0027] In this embodiment: the connector 2 is threaded into the connecting groove 3, thereby installing the mounting base 4 at the bottom end of the air extraction pipe 1.

[0028] Please refer to this carefully. Figures 2 to 5 The outer wall of the toothed ring 508 is provided with tooth grooves, which mesh with the spur gear 507.

[0029] In this embodiment: the motor 506 drives the spur gear 507 to rotate, the spur gear 507 rotates and drives the gear ring 508 to rotate, the gear ring 508 rotates and drives the rotating cylinder 509 to rotate, and the rotating cylinder 509 rotates on the inner wall of the mounting column 501.

[0030] Please refer to this carefully. Figures 2 to 5 The outer wall of the rotating cylinder 509 is in contact with the inner wall of the mounting column 501, and the outer wall of one end of the slide rod 505 is in contact with the inner walls of the C-shaped groove 510 and the inverted U-shaped groove 511.

[0031] In this embodiment: when the inverted U-shaped groove 511 faces an air inlet 502, the slide rod 505 on the baffle 504 inside the air inlet 502 slides along the C-shaped groove 510 to the top of the inverted U-shaped groove 511. The slide rod 505 moves upward, causing the baffle 504 to move upward, thereby opening the air inlet 502.

[0032] Please refer to this carefully. Figures 5 to 8 The outer wall of the displacement frame 603 is in contact with the inner wall of the displacement groove 602.

[0033] In this embodiment: when an air inlet 502 is opened, the baffle 504 moves upward. The movement of the baffle 504 causes the displacement frame 603 to move synchronously. The displacement frame 603 slides in the displacement groove 602. The movement of the displacement frame 603 causes the movable frame 605 to move synchronously. The movement of the movable frame 605 causes the scraper 606 to move synchronously.

[0034] Please refer to this carefully. Figures 5 to 8 The bottom end of the inclined block 601 is provided with a first inclined surface.

[0035] In this embodiment: the displacement frame 603 slides to the top of the displacement groove 602. During this process, the movable frame 605 comes into contact with the inclined block 601. The movable frame 605 is subjected to force and is displaced relative to the displacement frame 603, which causes compression on the first spring 604.

[0036] Please refer to this carefully. Figures 5 to 8The bottom end of the card block 607 is provided with a second inclined surface, and the outer wall of the bottom end of the card block 607 is in contact with the inner wall of the card slot 609.

[0037] In this embodiment: the movable frame 605 is displaced relative to the displacement frame 603 under force, which compresses the first spring 604 until the locking block 607 contacts the locking groove 609. The locking block 607 is locked into the locking groove 609 by the elastic force of the second spring 608, thus fixing the displacement frame 603 and the movable frame 605.

[0038] Please refer to this carefully. Figures 5 to 8 The push plate 610 is L-shaped, and the top of the push plate 610 is in contact with the bottom of the inner wall of the slot 609.

[0039] In this embodiment: the displacement frame 603 slides to the bottom end of the displacement groove 602. At this time, the push plate 610 contacts the bottom end of the displacement groove 602. The push plate 610 is subjected to force and is displaced relative to the displacement frame 603. The displacement of the push plate 610 pushes the locking block 607 out of the locking groove 609, thus canceling the fixation of the movable frame 605.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable pipe inlet protection device for gas extraction via buried pipes in goaf areas, characterized in that, The system includes an air extraction pipe (1), a mounting base (4) below the air extraction pipe (1), a connector (2) fixedly connected to the bottom end of the air extraction pipe (1), and a connecting groove (3) provided at the top end of the mounting base (4). The extraction direction of the air extraction pipe (1) is adjusted by an adjustment mechanism (5), which includes a mounting post (501) fixedly connected to the bottom end of the mounting base (4). An air inlet (502) is provided on the outer wall. A filter plate (503) is fixedly connected to the inner wall of the air inlet (502). A baffle (504) extending into the inner cavity of the air inlet (502) is slidably connected to the inside of the mounting post (501). A slide rod (505) is fixedly connected to the inner side of the baffle (504). The slide rod (505) extends into the inner cavity of the mounting post (501). The outer wall of the filter plate (503) is cleaned by a cleaning mechanism (6).

2. The adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 1, characterized in that, The adjustment mechanism (5) also includes a motor (506), which is installed inside the mounting base (4). The output end of the motor (506) is connected to a spur gear (507). A rotating cylinder (509) is rotatably connected to the inner wall of the mounting column (501). A gear ring (508) is fixedly connected to the top of the rotating cylinder (509). The spur gear (507) is in contact with the gear ring (508). A C-shaped groove (510) is opened on the outer wall of the rotating cylinder (509). An inverted U-shaped groove (511) is opened at one end of the outer wall of the rotating cylinder (509) located in the C-shaped groove (510).

3. The adjustable pipe inlet protection device for gas extraction via buried pipe in a goaf area according to claim 2, characterized in that, The cleaning mechanism (6) includes an inclined block (601), which is fixedly connected to the bottom end of the mounting base (4) and located outside the mounting column (501). A displacement frame (603) is fixedly connected to the outer wall of the baffle (504) away from the slide rod (505). A displacement groove (602) is provided on the outer wall of the mounting column (501) for the displacement frame (603) to slide. A movable frame (605) is slidably connected to the outer wall of the displacement frame (603). The displacement frame (603) and the movable frame (605) are connected to each other. A first spring (604) is connected between the movable frame (605) and the displacement frame (603). A scraper (606) is fixedly connected to the bottom end of the movable frame (605). A locking block (607) is slidably connected inside the movable frame (605) above the displacement frame (603). A second spring (608) is connected between the locking block (607) and the movable frame (605). A slot (609) is opened at the top end of the displacement frame (603). A push plate (610) is slidably connected inside the displacement frame (603). The bottom end of the push plate (610) extends out of the displacement frame (603).

4. The adjustable pipe inlet protection device for gas extraction via buried pipe in a goaf area according to claim 1, characterized in that, The outer wall of the connector (2) is provided with an external thread, and the inner wall of the connecting groove (3) is provided with an internal thread, and the external thread matches the internal thread.

5. An adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 2, characterized in that, The outer wall of the toothed ring (508) is provided with a tooth groove, which meshes with the spur gear (507).

6. The adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 2, characterized in that, The outer wall of the rotating cylinder (509) is in contact with the inner wall of the mounting column (501), and the outer wall of one end of the sliding rod (505) is in contact with the inner walls of the C-shaped groove (510) and the inverted U-shaped groove (511).

7. An adjustable pipe inlet protection device for gas extraction via buried pipe in a goaf area according to claim 3, characterized in that, The outer wall of the displacement frame (603) is in contact with the inner wall of the displacement groove (602).

8. The adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 3, characterized in that, The bottom end of the inclined block (601) is provided with a first inclined surface.

9. An adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 3, characterized in that, The bottom end of the card block (607) is provided with a second inclined surface, and the outer wall of the bottom end of the card block (607) is in contact with the inner wall of the card slot (609).

10. An adjustable pipe opening protection device for gas extraction via buried pipe in a goaf area according to claim 3, characterized in that, The push plate (610) is L-shaped, and the top of the push plate (610) is in contact with the bottom of the inner wall of the slot (609).

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