Mining orifice blowout preventer

Abstract

The utility model discloses a mining orifice blowout preventer, and relates to the technical field of mining orifice blowout prevention. The sealing device comprises a drill rod connecting port, wherein a sealing cavity is arranged on the peripheral side of the drill rod connecting port in a sleeving manner; the two semicircular combination blocks are matched with the outer side wall of the drill rod connecting opening, and the bottoms of the semicircular combination blocks are attached to the upper side of the sealing cavity. The cover plate is arranged, so that the semicircular combination blocks are positioned on the upper side of the sealing cavity through the cover plate, gaps formed in the contact positions of the semicircular combination blocks are sealed through the cover plate, and the problem that coal dust and gas rush out of the gaps in the mine drilling construction process is solved; and the sealing effect of the semicircular combined block on the drill rod connector is improved, so that the drilling construction process is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of mine orifice blowout prevention, and specifically relates to a mine orifice blowout prevention device. Background Art

[0002] During mine exploitation, a blowout prevention device is required to handle the coal dust and gas gushing out during the construction of mine boreholes.

[0003] The patent application with the publication number CN215927454U discloses a mine-use combined opening and closing and sealing blowout prevention device. Paragraph 0022 of its specification discloses that semi-circular combined blocks are arranged on both sides of the opening and closing dust-proof box. A buckle lock is arranged between adjacent semi-circular combined blocks, and the adjacent semi-circular combined blocks are buckled and connected through the buckle lock. A drill pipe connection port is arranged at the middle position of the upper surface of the semi-circular combined block. The two semi-circular combined blocks can be combined into an opening and closing dust-proof box through the connection of the buckle lock. This structure can facilitate users to install and disassemble, and improve the convenience of user use.

[0004] However, in actual use, when the two semi-circular combined blocks are attached to the outer side wall of the drill pipe connection port, a gap will be formed at the contact position of the two semi-circular combined blocks, and no treatment is carried out on the formed gap, which will still cause the problem of coal dust and gas gushing out from the gap.

[0005] Therefore, a mine orifice blowout prevention device is proposed to solve the above drawbacks. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a mine orifice blowout prevention device.

[0007] To solve the above technical problem, the basic concept of the technical solution adopted by the utility model is:

[0008] A mine orifice blowout prevention device includes a drill pipe connection port, and a sealing chamber is sleeved on the periphery of the drill pipe connection port;

[0009] Two semi-circular combined blocks that cooperate with the outer side wall of the drill pipe connection port, and the bottom of the semi-circular combined block is attached to the upper side of the sealing chamber;

[0010] A cover plate sleeved on the periphery of the drill pipe connection port, the bottom of the cover plate is attached to the upper side of the semi-circular combined block, and two first arc-shaped columns are rotatably matched at the bottom of the cover plate, and the inner side wall of the first arc-shaped column is attached to the outer side wall of the sealing chamber.

[0011] Optionally, in order to seal the inner side wall of the semi-circular combined block and the outer side wall of the drill pipe connection port, an arc-shaped rubber pad is installed on the inner side wall of the semi-circular combined block, and the inner side wall of the arc-shaped rubber pad is attached to the outer side wall of the drill pipe connection port.

[0012] Optionally, in order to snap-fit the semi-circular combined block on the upper side of the sealing chamber, two hinge members are installed on the outer side wall of the semi-circular combined block, and four docking members are installed on the outer side wall of the sealing chamber. One end of the docking member is snap-fitted with the hinge member.

[0013] Optionally, in order to place the cover plate around the drill pipe connection port through the through hole, a through hole is provided on one side of the cover plate, and the drill pipe connection port is located inside the through hole.

[0014] Optionally, in order to place the first annular plate around the sealing chamber, a first annular plate is installed at the bottom of the cover plate. An annular groove is provided at the bottom of the first annular plate, and the inner side wall of the first annular plate is attached to the outer side wall of the semi-circular combined block.

[0015] Optionally, in order to improve the stability of the second arc-shaped column during rotation, two second arc-shaped columns are rotatably fitted inside the annular groove, and one end of the first arc-shaped column is installed on one end of the second arc-shaped column.

[0016] Optionally, in order to thread-fit the first arc-shaped column on the outer side wall of the second arc-shaped plate, two second arc-shaped plates are installed on the outer side wall of the sealing chamber. External threads are provided on the outer side wall of the second arc-shaped plate, internal threads are provided on the inner side wall of the first arc-shaped column, and the internal threads are thread-fitted with the external threads.

[0017] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the present utility model does not necessarily need to achieve all the advantages described below at the same time:

[0018] The provided cover plate is used to position the semi-circular combined block on the upper side of the sealing chamber through the cover plate, and seal the gap formed at the contact of the semi-circular combined block through the cover plate, reducing the problem of coal dust and gas gushing out from the gap during the mine drilling construction process, improving the sealing effect of the semi-circular combined block on the drill pipe connection port, and making the drilling construction process more convenient.

[0019] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the accompanying

[0021] In the drawings:

[0022] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0023] Figure 2 Schematic diagram of the upward view structure of an embodiment of the present utility model;

[0024] Figure 3 Schematic diagram of the sectional structure of an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the sealed chamber and semi - circular combined block structure of an embodiment of the present utility model.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] Sealed chamber 1, drill pipe connection port 101, docking member 102, second arc plate 103, semi - circular combined block 2, arc rubber pad 201, hinge member 202, cover plate 3, through - hole 301, first annular plate 302, annular groove 303, second arc column 304, first arc column 305.

[0028] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0029] Now, the present utility model will be further described in detail with reference to the drawings.

[0030] Please refer to Figures 1-4 As shown, in this embodiment, a mine orifice blowout preventer is provided, including a drill pipe connection port 101, and a sealed chamber 1 is sleeved on the periphery of the drill pipe connection port 101;

[0031] Two semi - circular combined blocks 2 that cooperate with the outer side wall of the drill pipe connection port 101, and the bottom of the semi - circular combined block 2 is attached to the upper side of the sealed chamber 1;

[0032] A cover plate 3 sleeved on the periphery of the drill pipe connection port 101, the bottom of the cover plate 3 is attached to the upper side of the semi - circular combined block 2, and two first arc columns 305 are rotatably fitted to the bottom of the cover plate 3, and the inner side wall of the first arc column 305 is attached to the outer side wall of the sealed chamber 1.

[0033] Working principle:

[0034] First, the semi - circular combined block 2 is snap - fitted to the upper end of the drill pipe connection port 101, then the cover plate 3 is sleeved on the periphery of the drill pipe connection port 101, and the bottom of the cover plate 3 is attached to the upper side of the semi - circular combined block 2. Then, the first arc column 305 is rotated, and the first arc column 305 is threadedly fitted to the outer side wall of the sealed chamber 1, thereby completing the sealing treatment of the drill pipe connection port 101.

[0035] A cover plate 3 is provided to position the semi-circular combined block 2 on the upper side of the sealing chamber 1 through the cover plate 3 and seal the gap formed at the contact of the semi-circular combined block 2, reducing the problem of coal dust and gas gushing out from the gap during the construction of mine boreholes, improving the sealing effect of the semi-circular combined block 2 on the drill pipe connection port 101, and making the borehole construction process more convenient.

[0036] To make the sealing effect between the inner side wall of the semi-circular combined block 2 and the outer side wall of the drill pipe connection port 101 in this embodiment better, the following structure is improved as Figures 1-4 As shown, an arc-shaped rubber pad 201 is installed on the inner side wall of the semi-circular combined block 2 in this embodiment. The inner side wall of the arc-shaped rubber pad 201 fits on the outer side wall of the drill pipe connection port 101. Two hinge pieces 202 are installed on the outer side wall of the semi-circular combined block 2. Four docking pieces 102 are installed on the outer side wall of the sealing chamber 1. One end of the docking piece 102 is in snap-fit with the hinge piece 202. A through hole 301 is opened on one side of the cover plate 3, and the drill pipe connection port 101 is located inside the through hole 301.

[0037] When this embodiment is in use, first, the inner side wall of the semi-circular combined block 2 is attached to the outer side wall of the drill pipe connection port 101 through the arc-shaped rubber pad 201, and then it is snap-fitted on the upper side of the sealing chamber 1 through the docking piece 102 and the hinge piece 202, thus completing the installation of the semi-circular combined block 2.

[0038] The provided docking piece 102 and hinge piece 202 are used to snap-fit the semi-circular combined block 2 on the upper side of the sealing chamber 1 by the snap-fit of the hinge piece 202 and the docking piece 102, making the disassembly and assembly process of the semi-circular combined block 2 more convenient and improving the disassembly and assembly efficiency of the semi-circular combined block 2.

[0039] To make the rotation process of the first arc-shaped column 305 more stable under the cover plate 3 in this embodiment, the following structure is improved as Figures 1-4 As shown, a first annular plate 302 is installed at the bottom of the cover plate 3 in this embodiment. An annular groove 303 is opened at the bottom of the first annular plate 302. The inner side wall of the first annular plate 302 fits on the outer side wall of the semi-circular combined block 2. Two second arc-shaped columns 304 are rotationally fitted inside the annular groove 303. One end of the first arc-shaped column 305 is installed on one end of the second arc-shaped column 304. Two second arc-shaped plates 103 are installed on the outer side wall of the sealing chamber 1. External threads are provided on the outer side wall of the second arc-shaped plate 103, and internal threads are provided on the inner side wall of the first arc-shaped column 305. The internal threads are in threaded cooperation with the external threads.

[0040] When this embodiment is in use, first rotate the first arc-shaped column 305. The first arc-shaped column 305 drives the second arc-shaped column 304 to rotate inside the annular groove 303. The inner side wall of the first arc-shaped column 305 is threadedly engaged with the outer side wall of the second arc-shaped plate 103 through internal and external threads, thereby fixing the cover plate 3 on the upper side of the semi-circular combined block 2. Among them, the second arc-shaped column 304 and the annular groove 303 can be selected to have a T-shaped cross-section, and the rotation direction of the second arc-shaped column 304 is guided by the annular groove 303, reducing the problem of the second arc-shaped column 304 rotating out of the annular groove 303, and the rotation direction of the first arc-shaped column 305 is guided by the second arc-shaped column 304, improving the stability of the first arc-shaped column 305 during rotation.

[0041] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, fall within the protection scope of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A mine orifice blowout prevention device, characterized in that: include: A drill rod connection port (101), wherein a sealing chamber (1) is sleeved around the drill rod connection port (101); Two semicircular assembly blocks (2) matched with the outer side wall of the drill pipe connection port (101), the bottom of the semicircular assembly blocks (2) being attached to the upper side of the sealed chamber (1); A cover plate (3) is sleeved on the peripheral side of the drill pipe connection port (101), the bottom of the cover plate (3) is fitted on the upper side of the semicircular assembly block (2), and the bottom of the cover plate (3) is rotatably engaged with two first arc columns (305), and the inner side walls of the first arc columns (305) are fitted on the outer side walls of the sealed chamber (1).

2. A mine orifice blowout prevention device according to claim 1, characterized in that: The inner side wall of the semicircular assembly block (2) is provided with an arc-shaped rubber pad (201), and the inner side wall of the arc-shaped rubber pad (201) is attached to the outer side wall of the drill rod connection port (101).

3. A mine orifice blowout prevention device according to claim 1, characterized in that: The outer wall of the semicircular assembly block (2) is provided with two hinged parts (202), and the outer wall of the sealed chamber (1) is provided with four docking parts (102), one end of each docking part (102) being snap-fitted with the hinged part (202).

4. A mine orifice blowout prevention device according to claim 1, characterized in that: A through hole (301) is provided on one side of the cover plate (3), and the drill rod connection port (101) is located inside the through hole (301).

5. A mine orifice blowout prevention device according to claim 1, characterized in that: A first annular plate (302) is installed at the bottom of the cover plate (3), an annular groove (303) is opened at the bottom of the first annular plate (302), and the inner side wall of the first annular plate (302) is attached to the outer side wall of the semicircular assembly block (2).

6. A mine orifice blowout prevention device according to claim 5, characterized in that: Two second arc-shaped columns (304) are rotatably matched inside the annular groove (303), and one end of the first arc-shaped column (305) is mounted on one end of the second arc-shaped column (304).

7. A mine orifice blowout prevention device according to claim 1, characterized in that: Two second arc-shaped plates (103) are installed on the outer side wall of the sealed chamber (1), and the outer side wall of the second arc-shaped plate (103) is provided with external threads.

8. A mine orifice blowout prevention device according to claim 7, characterized in that: The inner side wall of the first arc-shaped column (305) is provided with an internal thread, and the internal thread is threadably matched with the external thread.

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