Mining bag type hole packer convenient for adjusting plugging length

Abstract

The utility model relates to the field of gas extraction hole sealing, and discloses a mining capsular bag type hole packer convenient for adjusting the plugging length, which comprises an extraction pipe, a first capsular bag, a second capsular bag, a grouting pipe, a first one-way grouting valve, a second one-way grouting valve and a one-way explosion valve, the first bag is arranged close to the extraction end of the extraction pipe, and the two ends of the first bag are fixedly connected with the extraction pipe and the grouting pipe; the second bag is arranged at the hole opening, close to the drill hole, of the extraction pipe, the two ends of the second bag are fixedly connected with the grouting pipe, the sleeve is fixedly connected to the hole opening, connected with the extraction pipe, of the two ends of the second bag, a rubber sleeve is arranged at the other end of the sleeve, and a locking hoop is arranged on the rubber sleeve; and at least two quick connectors are arranged on the extraction pipe between the first bag and the second bag. According to the utility model, the distance between the two bags can be quickly adjusted according to the drilling depth, so that the prefabricated hole packer can be quickly adjusted to adapt to the hole sealing process requirements of different drilling depths.

Description

Technical Field

[0001] The utility model relates to the field of gas drainage hole plugging, in particular to a mine-used bag-type hole plugging device which is convenient to adjust the plugging length. Background Technique

[0002] In the gas drainage project, after the drilling is completed, pressure-bearing plugging is required. At present, the "two-block-one-injection" pressure-bearing grouting plugging process is often adopted to reduce the problem of poor plugging caused by the cracks in the surrounding rock of the drilling hole, so as to improve the gas drainage effect of the coal seam, reduce the gas content of the coal seam, eliminate the danger of coal seam outburst, and shorten the time required for reaching the drainage standard.

[0003] The bag-type hole plugging device is an important device in the "two-block-one-injection" pressure-bearing grouting plugging process. It mainly consists of a drainage pipe, two bags, a grouting pipe, a one-way grouting one-way valve and a one-way blasting valve. At present, the bag of the bag-type hole plugging device is fixed to the grouting pipe and the drainage pipe by winding tape, resulting in poor sealing of the bag and affecting the plugging effect. In addition, the current bag-type hole plugging device is generally prefabricated according to the drilling length or the bag is temporarily installed by winding tape on site. The former cannot meet the plugging process requirements of different drilling depths, and the latter seriously affects the construction efficiency.

[0004] Based on this, the present application provides a mine-used bag-type hole plugging device which is convenient to adjust the plugging length. It can be prefabricated in advance or the distance between the bags can be adjusted to meet the plugging process requirements of different drilling depths. Content of the Utility Model

[0005] The utility model aims to solve the technical problems existing in the prior art. For this purpose, the utility model provides a mine-used bag-type hole plugging device which is convenient to adjust the plugging length. It can be prefabricated in advance or the distance between the bags can be adjusted to meet the plugging process requirements of different drilling depths.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is a mine - used bag - type hole - plugging device facilitating the adjustment of the plugging length, which includes an extraction pipe, a first bag and a second bag sleeved on the extraction pipe, a grouting pipe penetrating through the first bag and the second bag, a first one - way grouting valve arranged on the grouting pipe inside the first bag, a second one - way grouting valve arranged on the grouting pipe inside the second bag, and a one - way blasting valve arranged on the grouting pipe between the first bag and the second bag. A plug is arranged at the tail end of the grouting pipe; the first bag is arranged near the extraction end of the extraction pipe, and both of its two ends are fixedly connected to the extraction pipe and the grouting pipe; the second bag is arranged near the orifice of the borehole of the extraction pipe, and both of its two ends are fixedly connected to the grouting pipe. At the orifice where the two ends of the second bag are connected to the extraction pipe, sleeves are fixedly connected. A rubber sleeve is arranged at the other end of the sleeve, and a locking clamp is arranged on the rubber sleeve; at least two quick - connectors are further arranged on the extraction pipe between the first bag and the second bag.

[0008] In some alternative embodiments, both ends of the first bag are fixedly connected to the extraction pipe and the grouting pipe respectively through a first crimping ring and a second crimping ring; both ends of the second bag are fixedly connected to the grouting pipe and the sleeve respectively through a third crimping ring and a fourth crimping ring.

[0009] In some alternative embodiments, the first crimping ring, the second crimping ring, the third crimping ring and the fourth crimping ring are all made of metal rings and are respectively pressed tightly on the connecting parts connected to them through a crimping pliers.

[0010] In some alternative embodiments, the sleeve is made of a metal sleeve, its inner diameter is larger than the outer diameter of the extraction pipe, and a flange plate is arranged at the end far from the second bag, and the flange plate is covered inside the rubber sleeve.

[0011] In some alternative embodiments, the rubber sleeve is made of rubber material, its inner diameter is not larger than the outer diameter of the extraction pipe, and an annular groove is arranged on its upper surface, and anti - slip lines are arranged in the groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, the first bag is set as a fixed structure, the second bag and the extraction pipe are set as an adjustable structure, and at the same time, quick - connectors are arranged on the extraction pipe between the first bag and the second bag. The distance between the two bags can be quickly adjusted according to the depth of the borehole, so that the pre - fabricated hole - plugging device can be quickly adjusted to meet the requirements of the hole - plugging process for different borehole depths.

[0014] 2. The first bag is fixed to the extraction pipe and the grouting pipe through crimping rings, and the sealing effect is good; while the second bag is fixed on the sleeve, and the sleeve is fixed to the extraction pipe by locking the rubber sleeve through a locking clamp. This structure not only has a good sealing effect during fixation, but also can loosen the locking clamp to adjust the position of the second bag on the extraction pipe, making the second bag have good flexibility. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0016] Figure 1 is the working state diagram of the mine - used bladder - type hole - plugging device provided by the present invention, which is convenient for adjusting the plugging length;

[0017] Figure 2 is Figure 1 the provided partial enlarged view.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1 - extraction pipe, 2 - first bladder, 3 - second bladder, 4 - grouting pipe, 5 - first one - way grouting valve, 6 - second one - way grouting valve, 7 - one - way blasting valve, 8 - quick - coupling, 9 - casing, 9.1 - flange plate, 10 - rubber sleeve, 10.1 - annular groove, 11 - locking clamp, 12 - first crimping ring, 13 - second crimping ring, 14 - third crimping ring, 15 - fourth crimping ring. Detailed Embodiments

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention;

[0023] In addition, the descriptions of terms such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. The terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] Embodiment 1

[0026] As shown in the attached Figure 1 and attached Figure 2As shown in the figure, this embodiment provides a mine - used bag - type hole - plugging device that is convenient for adjusting the plugging length, which includes a gas - extraction pipe 1, a first bag 2, a second bag 3, a grouting pipe 4, a first one - way grouting valve 5, a second one - way grouting valve 6, a one - way blasting valve 7, and a quick - connector 8. Among them: The first bag 2 and the second bag 3 are sleeved on the gas - extraction pipe 1. The first bag 2 is arranged near the gas - extraction end of the gas - extraction pipe, and the second bag 3 is arranged near the orifice of the drill hole. Both ends of the first bag 2 are fixedly connected to the gas - extraction pipe 1, and the connection method is preferably fixed by a first crimping ring 12; at the orifices where both ends of the second bag 2 are connected to the gas - extraction pipe 1, sleeves 9 are fixedly connected. The sleeves are preferably made of metal sleeves, and their inner diameters are larger than the outer diameter of the gas - extraction pipe. The sleeve 9 is sleeved on the gas - extraction pipe 1. The other end of the sleeve 9 is provided with a rubber sleeve 10, and a locking clamp 11 is arranged on the rubber sleeve 10. The second bag 3 is fixed on the gas - extraction pipe 1 through the locking clamp 11. When the locking clamp is loosened, the position of the second bag on the gas - extraction pipe can be moved; the grouting pipe 4 penetrates through the first bag 2 and the second bag 3, and its tail end is blocked by a plug. The orifices where both ends of the first bag 2 and the second bag 3 are connected to the grouting pipe 4 are respectively fixedly connected to the grouting pipe 4 through a second crimping ring 13 and a third crimping ring 14, and both ends of the second bag 3 are fixedly connected to the sleeve 9 through a fourth crimping ring 15. The first crimping ring 12, the second crimping ring 13, the third crimping ring 14, and the fourth crimping ring 15 are all made of metal rings and are respectively clamped tightly on the connecting parts connected to them by a crimping pliers; The first one - way grouting valve 5 is arranged on the grouting pipe 4 inside the first bag 5; the second one - way grouting valve 6 is arranged on the grouting pipe 4 inside the second bag 3; the one - way blasting valve 7 is arranged on the grouting pipe 4 between the first bag 2 and the second bag 3; the quick - connector 8 is arranged on the grouting pipe 4 between the first bag 2 and the second bag 3, and preferably 2 quick - connectors 8 are provided.

[0027] During specific implementation, when it is necessary to shorten the distance between the first bag and the second bag (that is, when the hole - plugging length of the hole - plugging device is greater than the drilling depth), loosen the locking clamps at both ends of the second bag, loosen the grouting pipe and one of the quick - connectors, move the second bag to a suitable position, lock the locking clamps at both ends of the second bag to fix it, cut off a section of the grouting pipe and then reconnect the quick - connector.

[0028] When it is necessary to extend the distance between the first bag and the second bag (that is, when the hole - plugging length of the hole - plugging device cannot meet the hole - plugging requirements), loosen the locking clamps at both ends of the second bag, and at the same time remove a section of the grouting pipe between the two quick - connectors, move the second bag to a suitable position, lock the locking clamps at both ends of the second bag to fix it, replace a section of the grouting pipe with a suitable length and connect its two ends to the quick - connector interfaces.

[0029] Preferably, a flange plate 9.1 is provided at one end of the sleeve 9 away from the second pocket 3, and the flange plate 9.1 is covered within the rubber sleeve 10. This design can make the combination of the sleeve and the rubber sleeve more reliable.

[0030] Preferably, the rubber sleeve 10 is made of rubber material, its inner diameter is not greater than the outer diameter of the extraction pipe, and an annular groove 10.1 is provided on its upper surface, and anti-slip lines are provided in the groove.

[0031] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A bag-type hole sealer for mining that is convenient for adjusting the plugging length, comprising an extraction pipe, a first bag and a second bag sleeved on the extraction pipe, a grouting pipe that passes through the first bag and the second bag, a first one-way grouting valve disposed on the grouting pipe and located in the first bag, a second one-way grouting valve disposed on the grouting pipe and located in the second bag, and a one-way bursting valve disposed on the grouting pipe and located between the first bag and the second bag, wherein a plug is disposed at the tail end of the grouting pipe; characterized in that: The first bag is arranged on the extraction pipe near its extraction end, and both ends thereof are fixedly connected to the extraction pipe and the grouting pipe; The second bag is arranged at the opening of the extraction pipe close to the borehole, and its two ends are fixedly connected to the grouting pipe. The two ends of the second bag are fixedly connected to the opening of the extraction pipe with a sleeve, and the other end of the sleeve is provided with a rubber sleeve, and the rubber sleeve is provided with a locking clamp; The extraction tube is located between the first bag and the second bag and is also provided with at least two quick connectors.

2. The mining bag-type hole sealer with easy-to-adjust sealing length according to claim 1 is characterized in that: The two ends of the first bag are fixedly connected to the extraction pipe and the grouting pipe through a first crimping ring and a second crimping ring respectively; the two ends of the second bag are fixedly connected to the grouting pipe and the casing through a third crimping ring and a fourth crimping ring respectively.

3. The mining bag-type hole sealer with easy-to-adjust sealing length according to claim 2 is characterized in that: The first crimping ring, the second crimping ring, the third crimping ring and the fourth crimping ring are all made of metal rings, which are respectively pressed onto the connecting pieces connected thereto by crimping pliers.

4. The mining bag-type hole sealer with easy adjustment of the sealing length according to claim 1 is characterized in that: The sleeve is a metal sleeve, the inner diameter of which is larger than the outer diameter of the extraction tube, and a flange plate is provided at one end thereof away from the second bag, and the flange plate is covered in a rubber sleeve.

5. The mining bag-type hole sealer with easy-to-adjust sealing length according to claim 1 is characterized in that: The rubber sleeve is made of rubber material, the inner diameter of which is not larger than the outer diameter of the extraction tube, and the upper surface of the rubber sleeve is provided with an annular groove, and the groove is provided with anti-slip grooves.

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