Blowout hole prevention device for coal mine drilling

Abstract

The utility model relates to the technical field of coal mine drilling machines, in particular to a coal mine drilling hole spraying prevention device which comprises a hole pipe and an outer cylinder structure, the outer cylinder structure comprises an upper cylinder body, a lower cylinder body, side mounting plates, an air inlet pipe, a flange semi-ring, a locking bolt and a locking nut, and each side mounting plate is fixedly connected with the corresponding upper cylinder body and the lower cylinder body. The upper cylinder is arranged at the upper end of the lower cylinder, each set of locking bolts penetrate through the corresponding side mounting plates and are in threaded connection with the corresponding locking nuts, each set of locking nuts are arranged on the outer surface walls of the corresponding locking bolts in a sleeving mode, and the two ends of each set of flange semi-rings are fixedly connected with the corresponding side mounting plates. The hole pipe is embedded between the upper cylinder body and the lower cylinder body, and the air inlet pipe is fixedly connected with the upper cylinder body. The cleaning device is simple in structure and convenient to clean accumulated dust and moisture condensate after being used for a long time, and meanwhile, the hollow pipe can be cleaned or detached and replaced, so that the operation performance of the hollow pipe is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine drilling machines, in particular to a coal mine drilling hole anti-blowout device. Background Art

[0002] At present, most gas blowout prevention devices adopt a sealed box structure. One end of the sealing box is connected to a hole mask sealed with the coal wall or a core tube deep into the hole, and a hole for passing the drill rod is left at the corresponding end. The top of the sealing box is connected to a negative pressure exhaust port, and the bottom is connected to a slag discharge port. At present, the seal between the sealing box hole and the drill rod is generally sealed with a rubber ring. Since the drill rod is constantly rotating, the rubber ring is very easy to wear. After wear, gas will leak from the gap. When the leakage reaches a certain value, the gas alarm device will be triggered, resulting in power outages in the tunnel and construction interruptions, which seriously affect work safety and construction progress.

[0003] However, the prior art CN113898399A provides an airtight gas blowout prevention device for coal mine drilling, comprising an airtight mechanism and a sealing box, the right end of the airtight mechanism is detachably connected to the left end of the sealing box, the left end of the airtight mechanism is detachably connected to the drilling rig, and the right end of the sealing box is detachably connected to the hole mask or the core tube; the airtight mechanism comprises an outer cylinder, a hole tube embedded in the outer cylinder and matched with the outer cylinder gap, and a stopper sleeve embedded in the outer cylinder and plugged into the left end of the hole tube, the left end of the hole tube is axially positioned by the stopper sleeve, and the right end is axially positioned by the stopper shoulder arranged on the outer cylinder, the inner cavity of the stopper sleeve and the hole tube is connected to the sealing box, and a drill rod is inserted therein, an air inlet for inputting compressed air is provided at the upper part of the outer cylinder corresponding to the hole tube, and the hole tube is covered with a plurality of small holes, and the compressed air blows to the drill rod through the small holes, and a gas barrier is formed between the hole tube and the drill rod, thereby preventing gas from leaking from the end of the drill rod.

[0004] However, in the prior art, since the outer cylinder is a cylindrical structure, it is not easy to clean the inside. During use, dust and moisture will accumulate on the inner wall of the outer cylinder, causing the hole tube to be blocked, affecting the operating performance. Utility Model Content

[0005] The utility model aims to provide a coal mine drilling anti-blowout hole device, aiming to solve the technical problem in the prior art that the outer cylinder is a cylindrical structure, which makes it difficult to clean the inside, and during use, dust and moisture will accumulate on the inner wall of the outer cylinder, causing the hole tube to be blocked, thereby affecting the operating performance.

[0006] To achieve the above-mentioned purpose, the utility model adopts a coal mine drilling anti-blowout hole device, including a hole tube and an outer cylinder structure, the outer cylinder structure includes an upper cylinder, a lower cylinder, a side mounting plate, an air intake pipe, a flange half ring, a locking bolt and a locking nut, the number of the side mounting plates is multiple groups, each group of the side mounting plates is fixedly connected to the corresponding upper cylinder and the lower cylinder, and are respectively located on both sides of the corresponding upper cylinder and the lower cylinder, the upper cylinder is arranged at the upper end of the lower cylinder, and the upper cylinder and the lower cylinder are adapted to each other, the locking bolt and the locking nut The number of said flange half rings is respectively multiple groups, each group of said locking bolts respectively penetrates the corresponding said side mounting plates and is respectively threadedly connected with the corresponding said locking nuts, and each group of said locking nuts is respectively sleeved on the outer wall of the corresponding said locking bolts, the number of said flange half rings is multiple groups, the two ends of each group of said flange half rings are respectively fixedly connected with the corresponding said side mounting plates, and are respectively sleeved on the outer wall of the corresponding said upper cylinder and said lower cylinder, the orifice tube is embedded between the said upper cylinder and the said lower cylinder, the said intake pipe is fixedly connected with the said upper cylinder, and is located at the upper end of the said upper cylinder.

[0007] Wherein, the two ends of the upper cylinder have convex teeth, the two ends of the lower cylinder have embedding grooves, and the convex teeth and the embedding grooves are adapted to each other.

[0008] Wherein, the outer cylinder structure also includes sealing strips, and the number of the sealing strips is multiple groups, each group of the sealing strips is respectively embedded between the upper cylinder and the lower cylinder, and the two sides of each group of the sealing strips are respectively adapted to the convex teeth and the embedding grooves.

[0009] Among them, the coal mine drilling anti-blowout hole device also includes embedded half rings and sealing rings. The number of the embedded half rings is multiple groups, and each group of the embedded half rings is fixedly connected to the corresponding upper cylinder and the lower cylinder, and is respectively located at one end of the corresponding upper cylinder and the lower cylinder. The number of the sealing rings is multiple groups, and each group of the sealing rings is respectively sleeved on the outer wall of the corresponding embedded half ring.

[0010] Wherein, the coal mine drilling anti-blowout hole device also includes an extrusion ring, and the number of the extrusion rings is multiple groups, and each group of the extrusion rings is respectively embedded in one side of the corresponding flange half ring.

[0011] The utility model discloses a coal mine drilling anti-blowout hole device, wherein the upper cylinder and the lower cylinder are covered to form a pipe body structure, and the locking bolts are used to penetrate the corresponding side mounting plates and cooperate with the locking nuts to lock and fix the side mounting plates on both sides, so as to lock and fix the upper cylinder and the lower cylinder. After the upper cylinder and the lower cylinder are locked and fixed, the flange half rings at both ends are spliced ​​to form a complete flange ring, so as to facilitate flange connection of the left and right ends of the cylinder, and the air inlet pipe is connected to the upper cylinder The outer wall of the body, the orifice tube is placed between the upper cylinder and the lower cylinder. During use, the upper cylinder, the lower cylinder and the orifice tube can be installed and spliced. When dismantling for cleaning, the bolts of the flange half ring are loosened, and then the locking bolts and the locking nuts are loosened, and the upper cylinder and the lower cylinder are opened to quickly clean them. The above structural arrangement is convenient for cleaning the solidified products of accumulated dust and moisture after long-term use, and the empty pipe can be cleaned or dismantled and replaced to ensure its operating performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0014] Figure 2 It is an enlarged view of the local structure of the first embodiment of the utility model.

[0015] Figure 3 It is a side view of the first embodiment of the utility model.

[0016] Figure 4 The utility model Figure 3 AA line structural cross-section view.

[0017] Figure 5 It is a structural schematic diagram of the second embodiment of the utility model.

[0018] 101-hole tube, 102-upper cylinder, 103-lower cylinder, 104-side mounting plate, 105-inlet pipe, 106-flange half ring, 107-locking bolt, 108-locking nut, 109-convex tooth, 110-embedded groove, 111-sealing strip, 201-embedded half ring, 202-sealing ring, 203-extrusion ring. DETAILED DESCRIPTION

[0019] The first embodiment of the present application is:

[0020] See also Figures 1 to 4 ,in Figure 1 It is a structural schematic diagram of the first embodiment of the utility model. Figure 2 This is an enlarged view of the local structure of the first embodiment of the utility model. Figure 3 is a side view of the first embodiment of the utility model, Figure 4 The utility model Figure 3 AA line structural cross-section view.

[0021] The utility model provides a coal mine drilling anti-blowout hole device: comprising a hole pipe 101 and an outer cylinder structure, wherein the outer cylinder structure comprises an upper cylinder body 102, a lower cylinder body 103, a side mounting plate 104, an air inlet pipe 105, a flange half ring 106, a locking bolt 107, a locking nut 108 and a sealing strip 111.

[0022] According to this specific embodiment, the upper cylinder 102 and the lower cylinder 103 limit and lock the orifice tube 101 through the locking bolt 107 and the locking nut 108, and form a flange ring through the flange half ring 106 to facilitate connection and fixation.

[0023] The number of the side mounting plates 104 is multiple groups, and each group of the side mounting plates 104 is fixedly connected to the corresponding upper cylinder 102 and the lower cylinder 103, and is respectively located on both sides of the corresponding upper cylinder 102 and the lower cylinder 103. The upper cylinder 102 is arranged at the upper end of the lower cylinder 103, and the upper cylinder 102 and the lower cylinder 103 are adapted to each other. The number of the locking bolts 107 and the locking nuts 108 is multiple groups, and each group of the locking bolts 107 penetrates the corresponding side mounting plates 104. The flange half rings 106 are respectively threadedly connected with the corresponding locking nuts 108, and each group of the locking nuts 108 is respectively sleeved on the outer wall of the corresponding locking bolts 107. The number of the flange half rings 106 is multiple groups, and the two ends of each group of the flange half rings 106 are respectively fixedly connected with the corresponding side mounting plates 104, and are respectively sleeved on the outer walls of the corresponding upper cylinder 102 and the lower cylinder 103. The orifice tube 101 is embedded between the upper cylinder 102 and the lower cylinder 103, and the intake pipe 105 is fixedly connected to the upper cylinder 102. , and is located at the upper end of the upper cylinder 102, the upper cylinder 102 and the lower cylinder 103 are covered to form a tubular structure, and the locking bolts 107 are used to penetrate the corresponding side mounting plates 104 and cooperate with the locking nuts 108 to lock and fix the side mounting plates 104 on both sides, so as to lock and fix the upper cylinder 102 and the lower cylinder 103. After the upper cylinder 102 and the lower cylinder 103 are locked and fixed, the flange half rings 106 at both ends are spliced ​​to form a complete flange ring, so that The left and right ends of the cylinder are flange-connected, the air inlet pipe is connected to the outer wall of the upper cylinder 102, and the orifice tube 101 is placed between the upper cylinder 102 and the lower cylinder 103. During use, the upper cylinder 102, the lower cylinder 103 and the orifice tube 101 can be installed and spliced. When dismantling for cleaning, the bolts of the flange half ring 106 are loosened, and then the locking bolts 107 and the locking nuts 108 are loosened, and the upper cylinder 102 and the lower cylinder 103 are opened for quick cleaning.

[0024] Secondly, both ends of the upper cylinder 102 have convex teeth 109, and both ends of the lower cylinder 103 have embedding grooves 110, and the convex teeth 109 and the embedding grooves 110 are adapted to each other. Through the snap-fitting of the convex teeth 109 and the embedding grooves 110, the connection strength between the upper cylinder 102 and the lower cylinder 103 can be improved, thereby avoiding the situation where the upper cylinder 102 and the lower cylinder 103 are misaligned due to external forces during use.

[0025] At the same time, there are multiple groups of sealing strips 111, and each group of sealing strips 111 is respectively embedded between the upper cylinder 102 and the lower cylinder 103, and the two sides of each group of sealing strips 111 are respectively adapted to the convex teeth 109 and the embedding groove 110. The sealing strips 111 can perfectly adapt to the convex teeth 109 and the embedding groove 110, and the gap between the convex teeth 109 and the embedding groove 110 is sealed by the sealing strips 111, thereby improving the sealing performance of the upper cylinder 102 and the lower cylinder 103.

[0026] When using a coal mine drilling anti-blowout hole device of the present embodiment, the upper cylinder 102 and the lower cylinder 103 are covered to form a pipe body structure, and the locking bolts 107 are used to penetrate the corresponding side mounting plates 104 and cooperate with the locking nuts 108 to lock and fix the side mounting plates 104 on both sides, so as to lock and fix the upper cylinder 102 and the lower cylinder 103. After the upper cylinder 102 and the lower cylinder 103 are locked and fixed, the flange half rings 106 at both ends are spliced ​​to form a complete flange ring, so as to facilitate flange connection of the left and right ends of the cylinder, and the air inlet pipe is connected to the outer wall of the upper cylinder 102, and the hole pipe 101 is placed between the upper cylinder 102 and the lower cylinder 103. During use, the upper cylinder 102 and the lower cylinder 1 03 and the orifice tube 101 can be installed and spliced. When dismantling for cleaning, loosen the bolts of the flange half ring 106, then loosen the locking bolts 107 and the locking nuts 108, open the upper cylinder 102 and the lower cylinder 103, and quickly clean them. The snap-fitting of the convex teeth 109 and the embedding groove 110 can improve the connection strength between the upper cylinder 102 and the lower cylinder 103, and avoid the situation where the upper cylinder 102 and the lower cylinder 103 are misaligned due to external forces during use. The sealing strip 111 can perfectly fit the convex teeth 109 and the embedding groove 110, and the sealing strip 111 can seal the gap between the convex teeth 109 and the embedding groove 110, thereby improving the sealing performance of the upper cylinder 102 and the lower cylinder 103.

[0027] The second embodiment of the present application is:

[0028] Based on the first embodiment, please refer to Figure 5 ,in Figure 5 It is a structural schematic diagram of the second embodiment of the utility model.

[0029] The utility model provides a coal mine drilling anti-blowout hole device, which also includes an embedded half ring 201, a sealing ring 202 and an extrusion ring 203.

[0030] According to this specific embodiment, the embedded half ring 201 can improve the connection strength of the left and right ends of the upper cylinder 102 and the lower cylinder 103, while the sealing ring 202 and the extrusion ring 203 improve the sealing performance of the left and right ends of the upper cylinder 102 and the lower cylinder 103.

[0031] Among them, the number of the embedded half rings 201 is multiple groups, and each group of the embedded half rings 201 is fixedly connected to the corresponding upper cylinder 102 and the lower cylinder 103, and is respectively located at one end of the corresponding upper cylinder 102 and the lower cylinder 103. The number of the sealing rings 202 is multiple groups, and each group of the sealing rings 202 is respectively sleeved on the outer wall of the corresponding embedded half ring 201. After the upper cylinder 102 and the lower cylinder 103 are connected and fixed, when connecting the left and right ends thereof, the embedded half ring 201 is embedded in the connecting device, and at the same time, the sealing ring 202 performs air sealing and water sealing to ensure its sealing. At the same time, the embedding of the embedded half ring 201 can ensure its connection strength and connection stability.

[0032] Secondly, there are multiple groups of extrusion rings 203, and each group of extrusion rings 203 is respectively embedded in one side of the corresponding flange half ring 106. When the extrusion rings 203 connect the left and right ends of the upper cylinder 102 and the lower cylinder 103, the flange half ring 106 is tightened, and then the extrusion rings 203 are squeezed to deform and then seal the ends of the upper cylinder 102 and the lower cylinder 103.

[0033] When using a coal mine drilling anti-blowout hole device of the present embodiment, after the upper cylinder 102 and the lower cylinder 103 are connected and fixed, when connecting the left and right ends thereof, the embedded half ring 201 is embedded in the connecting device, and at the same time, the sealing ring 202 performs air-tight and water-tight sealing to ensure its sealing performance. At the same time, the embedding of the embedded half ring 201 can ensure its connection strength and connection stability. When the extrusion ring 203 connects the left and right ends of the upper cylinder 102 and the lower cylinder 103, the flange half ring 106 is tightened, and then the extrusion ring 203 is extruded to cause it to deform and then seal the ends of the upper cylinder 102 and the lower cylinder 103.

[0034] What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A coal mine drilling anti-blowout hole device, comprising a hole pipe, characterized in that: Also includes an outer cylinder structure; The outer cylinder structure comprises an upper cylinder, a lower cylinder, a side mounting plate, an air inlet pipe, a flange half ring, a locking bolt and a locking nut. The number of the side mounting plates is multiple groups, and each group of the side mounting plates is fixedly connected to the corresponding upper cylinder and the lower cylinder, and is respectively located on both sides of the corresponding upper cylinder and the lower cylinder. The upper cylinder is arranged at the upper end of the lower cylinder, and the upper cylinder and the lower cylinder are adapted to each other. The number of the locking bolts and the locking nuts is multiple groups, and each group of the locking bolts passes through the corresponding side mounting plates and is respectively threadedly connected with the corresponding locking nuts, and each group of the locking nuts is respectively sleeved on the outer wall of the corresponding locking bolts. The number of the flange half rings is multiple groups, and the two ends of each group of the flange half rings are respectively fixedly connected to the corresponding side mounting plates, and are respectively sleeved on the outer walls of the corresponding upper cylinder and the lower cylinder. The orifice tube is embedded between the upper cylinder and the lower cylinder, and the air inlet pipe is fixedly connected to the upper cylinder and is located at the upper end of the upper cylinder.

2. A coal mine drilling anti-blowout device as claimed in claim 1, characterized in that: Both ends of the upper cylinder are provided with convex teeth, and both ends of the lower cylinder are provided with embedding grooves, and the convex teeth and the embedding grooves are adapted to each other.

3. A coal mine drilling anti-blowout hole device as claimed in claim 2, characterized in that: The outer cylinder structure also includes sealing strips, which are provided in multiple groups. Each group of sealing strips is respectively embedded between the upper cylinder and the lower cylinder, and two sides of each group of sealing strips are respectively matched with the protruding teeth and the embedding grooves.

4. A coal mine drilling anti-blowout hole device as claimed in claim 3, characterized in that: The coal mine drilling anti-blowout hole device also includes an embedded half ring and a sealing ring. The number of the embedded half rings is multiple groups, and each group of the embedded half rings is fixedly connected to the corresponding upper cylinder and the lower cylinder, and is respectively located at one end of the corresponding upper cylinder and the lower cylinder. The number of the sealing rings is multiple groups, and each group of the sealing rings is respectively sleeved on the outer wall of the corresponding embedded half ring.

5. A coal mine drilling anti-blowout device as claimed in claim 4, characterized in that: The coal mine drilling anti-blowout hole device also includes an extrusion ring, and the number of the extrusion rings is multiple groups, and each group of the extrusion rings is respectively embedded in one side of the corresponding flange half ring.

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