Emergency extraction hole sealing device for driving face

Abstract

The utility model discloses a heading face emergency extraction hole sealing device which comprises an expansion plugging pipe which is fixedly assembled and connected with a threaded connection pipe. In the plugging process, the expansion plugging pipe is plugged in the eye hole; the pipe diameter of the expansion plugging pipe tends to increase from the inner end to the outer end; the threaded connecting pipe is communicated with a pressure relief pipe; the threaded connection pipe further comprises a detection pipe which is communicated with the gas detector; the end part of the threaded connecting pipe is communicated and connected with a connecting head, the connecting head comprises a hexagonal seat, and a connector is integrally formed on the hexagonal seat. According to the device, hole sealing is achieved in an expansion mode, the gas emission amount from a hole opening to the interior of a hole can be cut off, and therefore sealing and pressure extraction are achieved; the extraction efficiency is improved, and the extraction time efficiency is reduced. The safe pressure relief design is achieved, the pressure can be automatically adjusted, and when the gas pressure in the eye hole is sharply increased, in order to prevent high-pressure gas from ejecting out the hole sealing device and injuring people, safe pressure relief is conducted, and continuous extraction is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of emergency extraction of gas in mining, and in particular relates to an emergency extraction and sealing device for a tunneling working face. Background Art

[0002] As the deep horizontal excavation working face extends, the ground pressure increases; the small-scale gas caused by small structures becomes more and more serious. High-pressure gas often rushes into the excavation working face from anchor rods, anchor cables, and blastholes in an instant. This unpredictable gas makes on-site gas management increasingly difficult.

[0003] In order to improve the abnormal gas outburst from various eyelets during the advancement of the mine excavation working face, an emergency extraction system is installed in all underground excavation work during the mining operation, so that when abnormal gas outburst occurs in the eyelets, the extraction system can be used in time to reduce the air displacement, thereby reducing and eliminating the occurrence of abnormal gas accidents.

[0004] Specifically, the existing anchor rods and anchor cable eyes are constructed with a 33 mm diameter drill bit. During the extraction process, the extraction tube is directly inserted into the eye hole of the rock. Because the internal gas pressure is uncontrollable, when the gas pressure is relatively high, it is easy to push the extraction tube out of the eye hole. In the process of pushing out the eye hole, the extraction tube moves at a relatively fast speed and can easily hit construction personnel and equipment, so there are relatively large safety hazards.

[0005] Secondly, during the extraction process, when the internal gas pressure is relatively high, it is impossible to perform emergency pressure relief on the gas passing through the extraction plug pipe, thereby increasing the stability of extraction.

[0006] At the same time, the currently used extraction tube is inserted into the eyelet, and the sealing is not high. During the extraction process, it is easy for air to leak between the eyelet and the extraction tube, resulting in a large amount of gas leakage during the extraction process, posing a hidden danger to safe extraction. Utility Model Content

[0007] Based on the above background, the purpose of the utility model is to provide an emergency extraction and sealing device for an excavation working face.

[0008] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0009] The emergency extraction and sealing device of the excavation working face comprises an expansion sealing pipe, wherein the expansion sealing pipe is fixedly assembled and connected with a threaded connecting pipe;

[0010] During the plugging process, the expansion plugging tube is plugged in the eyelet; the diameter of the expansion plugging tube increases from the inner end to the outer end;

[0011] The threaded connection pipe is connected to a pressure relief pipe, and the pressure relief pipe is equipped with a pressure relief valve, and the pressure relief valve is opened to release pressure;

[0012] The threaded connecting pipe also includes a detection pipe connected to a gas detector;

[0013] The end of the threaded connecting pipe is connected to a connecting head, and the connecting head includes a hexagonal seat, and the hexagonal seat is integrally formed with a connector.

[0014] Preferably, the air inlet end of the expansion and sealing tube is equipped with a filtering mechanism.

[0015] Preferably, the filtering mechanism comprises a filter tube fixedly mounted on the expansion plugging tube, and a filter screen is mounted and connected inside the filter tube;

[0016] The sand and gravel are filtered through the filtering mechanism.

[0017] Preferably, the filter tube is threadedly connected to the tube opening of the expansion sealing tube.

[0018] Preferably, a handle mechanism is threadedly connected to the threaded connection pipe.

[0019] Preferably, the handle mechanism comprises an adjustment ring seat threadedly connected to a threaded connecting tube, and adjustment handles are welded on both sides of the threaded connecting tube.

[0020] Preferably, the connector comprises a connecting sleeve integrally formed on the hexagonal seat;

[0021] After the extraction pipe passes through the connecting casing, it is threadedly connected to the hexagonal seat.

[0022] Preferably, the connecting sleeve and the extraction pipe are locked by a U-shaped locking rod;

[0023] The connecting sleeve is provided with a through hole adapted to the U-shaped locking rod;

[0024] The U-shaped locking rod is threadedly connected with a locking nut.

[0025] The utility model has the following beneficial effects:

[0026] 1. The device uses expansion method to seal the hole, which can cut off the gas outflow from the hole mouth to the eye, thereby achieving sealing and pressure extraction; improving extraction efficiency and reducing extraction time.

[0027] 2. The device is equipped with a safety pressure relief design, and the pressure can be adjusted automatically. When the gas pressure in the eyelet increases sharply, in order to prevent the high-pressure gas from pushing out the sealing device and causing injuries to personnel, the pressure is relieved safely to achieve continuous extraction;

[0028] 3. In order to detect the gas concentration in the hole and the extraction effect in real time, the device is equipped with a detection tube and a gas detector to detect the gas concentration and the change of gas in the hole; when the gas drops below the requirement of the measure, the extraction can be stopped in time to resume production;

[0029] 4. Coal and rock debris in the construction eye can easily clog the extraction pipeline and reduce the extraction negative pressure. The device is equipped with a filtering mechanism to isolate the coal and rock debris in the eye and improve the extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0032] Figure 2 For the utility model embodiment Figure 1 Top view of .

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] Example 1

[0038] like Figure 1-2 As shown, an emergency drainage and sealing device for an excavation working face comprises an expansion sealing pipe 1, and the expansion sealing pipe 1 is fixedly assembled and connected with a threaded connecting pipe 2. During the working process, during the plugging process, the expansion sealing pipe 1 is plugged in the eye hole; the diameter of the expansion sealing pipe 1 increases from the inner end to the outer end. Through this shape design, during the plugging process, the emergency drainage and sealing device for an excavation working face comprises an expansion sealing pipe 1, and the expansion sealing pipe 1 is fixedly assembled and connected with a threaded connecting pipe 2.

[0039] During the plugging process, the expansion plugging tube 1 is plugged in the eyelet; the diameter of the expansion plugging tube 1 increases from the inner end to the outer end. In this way, during the plugging process, the expansion plugging tube 1 is gradually driven into the eyelet, and the expansion plugging tube 1 is fully plugged by taking advantage of the trend of the expansion plugging tube 1 becoming larger.

[0040] During operation, the threaded connection pipe 2 is connected to a pressure relief pipe 4. According to the existing method, the pressure relief pipe 4 is equipped with a pressure relief valve, which is opened to release pressure. The pressure relief valve is a safety pressure relief valve. During operation, once the gas pressure is too high, the pressure relief valve is opened to release the gas pressure in an emergency. In this way, the whole device is kept highly stable during the process of plugging and draining the eyelet.

[0041] The threaded connection pipe 2 also includes a detection pipe 5, which is connected to a gas detector in the conventional manner. The gas detector is a conventional device for detecting gas concentration and gas pressure disclosed in the prior art. Through this detection method, the gas condition can be monitored in real time during the working process, and the operation can be carried out in a highly stable and safe manner.

[0042] The end of the threaded connection pipe 2 is connected to a connector, and the connector includes a hexagonal seat 62 (a threaded through hole is provided on the hexagonal seat 62 ), and the hexagonal seat 62 is threadedly connected to the threaded connection pipe 2 .

[0043] At the same time, a connector is integrally formed at the other end of the hexagonal seat 62. Specifically, the connector includes a connecting sleeve 6 integrally formed on the hexagonal seat 62. According to the existing method, during extraction, the extraction pipe 8 is passed through the connecting sleeve 6 and then threadedly connected to the hexagonal seat 62. The extraction pipe is connected to the entire device to extract gas.

[0044] In order to increase the stability of the extraction tube 8 connected to the hexagonal seat 62, the connection sleeve 6 and the extraction tube are locked by a U-shaped locking rod 61. Specifically, a through hole adapted to the U-shaped locking rod 61 is provided on the connection sleeve 6; a locking nut is threadedly connected to the U-shaped locking rod 61. After tightening the locking nut, the U-shaped locking rod is used to lock the connection sleeve 6 and the extraction tube 8, thereby preventing the extraction tube from falling off from the hexagonal seat 62 during operation, such as when the air pressure is high.

[0045] Example 2

[0046] like Figure 1-2 As shown, in this embodiment, based on the structure of embodiment 1, the air inlet end of the expansion plugging tube 1 is assembled and connected with a filter mechanism 7. Specifically, the filter mechanism 7 includes a filter tube 71 fixedly assembled on the expansion plugging tube 1 (specifically: the filter tube 71 is threadedly connected to the tube mouth of the expansion plugging tube 1), and a filter screen 72 is assembled and connected inside the filter tube 71.

[0047] During operation, in this way, during the gas extraction process, sand and gravel are filtered through the filtering mechanism to prevent sand and gravel from entering the pipeline along with the gas, causing blockage and increased gas pressure.

[0048] Example 3

[0049] like Figure 1-2 As shown, in this embodiment, based on the structure of embodiment 1, a handle mechanism is threadedly connected to the threaded connection pipe 2. The handle mechanism includes an adjustment ring seat 31 threadedly connected to the threaded connection pipe 2, and adjustment handles 32 are welded on both sides of the threaded connection pipe 2.

[0050] During the working process, the operator rotates the adjustment handle 32 to fully squeeze the expansion plugging tube 1 into the eyelet by adjusting the handle 32.

[0051] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. Emergency extraction and sealing device for excavation working face, characterized in that: It comprises an expansion plugging pipe, wherein the expansion plugging pipe is fixedly assembled and connected with a threaded connecting pipe; During the plugging process, the expansion plugging tube is plugged in the eyelet; the diameter of the expansion plugging tube increases from the inner end to the outer end; The threaded connection pipe is connected to a pressure relief pipe, and the pressure relief pipe is equipped with a pressure relief valve, and the pressure relief valve is opened to release pressure; The threaded connecting pipe also includes a detection pipe connected to a gas detector; The end of the threaded connecting pipe is connected to a connecting head, and the connecting head includes a hexagonal seat, and the hexagonal seat is integrally formed with a connector.

2. The emergency drainage and sealing device for the excavation working face according to claim 1 is characterized in that: The air inlet end of the expansion plugging tube is assembled and connected with a filtering mechanism.

3. The emergency drainage and sealing device for the excavation working face according to claim 2 is characterized in that: The filtering mechanism comprises a filter tube fixedly mounted on the expansion plugging tube, wherein a filter screen is mounted and connected inside the filter tube; The sand and gravel are filtered through the filtering mechanism.

4. The emergency drainage and sealing device for the excavation working face according to claim 3 is characterized in that: The filter tip tube is threadedly connected to the tube opening of the expansion plugging tube.

5. The emergency drainage and sealing device for the excavation working face according to claim 1, characterized in that: The threaded connection pipe is threadedly connected with a handle mechanism.

6. The emergency drainage and sealing device for the excavation working face according to claim 5 is characterized in that: The handle mechanism comprises an adjusting ring seat threadedly connected to a threaded connecting pipe, and adjusting handles are welded on both sides of the threaded connecting pipe.

7. The emergency drainage and sealing device for the excavation working face according to claim 1, characterized in that: The connector comprises a connecting sleeve integrally formed on a hexagonal seat; After the extraction pipe passes through the connecting casing, it is threadedly connected to the hexagonal seat.

8. The emergency drainage and sealing device for the excavation working face according to claim 7, characterized in that: The connecting sleeve and the extraction pipe are locked by a U-shaped locking rod; The connecting sleeve is provided with a through hole adapted to the U-shaped locking rod; The U-shaped locking rod is threadedly connected with a locking nut.

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