CN111608610A - Pneumatic automatic liquid injection device for coal mine - Google Patents
Pneumatic automatic liquid injection device for coal mine Download PDFInfo
- Publication number
- CN111608610A CN111608610A CN202010603940.5A CN202010603940A CN111608610A CN 111608610 A CN111608610 A CN 111608610A CN 202010603940 A CN202010603940 A CN 202010603940A CN 111608610 A CN111608610 A CN 111608610A
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- raw material
- material container
- polyurethane raw
- liquid
- polyurethane
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- 239000007788 liquid Substances 0.000 title claims abstract description 92
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 121
- 229920002635 polyurethane Polymers 0.000 claims abstract description 117
- 239000004814 polyurethane Substances 0.000 claims abstract description 117
- 239000000243 solution Substances 0.000 claims abstract description 4
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a pneumatic automatic liquid injection device for a coal mine, which comprises a first polyurethane raw material container and a second polyurethane raw material container which are closed; liquid outlet pipes are arranged in the first polyurethane raw material container and the second polyurethane raw material container, and solution outlets of the two liquid outlet pipes are connected to the same position of the grouting pipe; air inlet pipes are arranged in the first polyurethane raw material container and the second polyurethane raw material container, and air inlets of the two air inlet pipes are connected to the same position of the air pressing main pipe; the air inlet pipe is used for introducing isobaric compressed air into the closed first polyurethane raw material container and the closed second polyurethane raw material container; according to the invention, the compressed air is introduced from the compressed air main pipe and is respectively injected into the first polyurethane raw material container and the second polyurethane raw material container through the two same air inlet pipes, so that the raw material liquid is discharged under pressure, and the liquid outlet amounts of the raw material liquid in the first polyurethane raw material container and the raw material liquid in the second polyurethane raw material container are the same.
Description
Technical Field
The invention belongs to the technical field of coal mine equipment, and particularly relates to a pneumatic automatic liquid injection device for a coal mine.
Background
During coal mining, it is often necessary to close the gas bore. The common sealing method is to inject polyurethane into the gas drill hole so as to block the gas drill hole.
However, in the process of injecting polyurethane into the gas drill hole, two polyurethane raw material liquids need to be injected simultaneously, and the polyurethane generated after the reaction can achieve the due effect of plugging the gas drill hole according to the proportion requirement of 1: 1.
Although the existing grouting pump can inject raw materials at the same time, the injection proportion of the raw materials is difficult to adjust, and the sealing effect of polyurethane generated after the two raw materials are mixed is poor.
Disclosure of Invention
The invention aims to provide a pneumatic automatic liquid injection device for a coal mine, which can improve the accuracy of the proportion of two kinds of injected liquid.
The invention adopts the following technical scheme: a pneumatic automatic liquid injection device for coal mines comprises a first polyurethane raw material container and a second polyurethane raw material container which are closed;
liquid outlet pipes are arranged in the first polyurethane raw material container and the second polyurethane raw material container, and solution outlets of the two liquid outlet pipes are connected to the same position of the grouting pipe;
air inlet pipes are arranged in the first polyurethane raw material container and the second polyurethane raw material container, and air inlets of the two air inlet pipes are connected to the same position of the air pressing main pipe;
the air inlet pipe is used for introducing isobaric compressed air into the closed first polyurethane raw material container and the closed second polyurethane raw material container, so that the liquids in the first polyurethane raw material container and the second polyurethane raw material container are discharged through the liquid outlet pipe in an equivalent amount at the same time.
Further, the liquid outlets of the two liquid outlet pipes are connected with the grouting pipe through a tee joint, and the liquid outlets of the two liquid outlet pipes are respectively connected to a straight port of the tee joint.
Furthermore, the air inlets of the two air inlet pipes are connected with the air pressing main pipe through a tee joint, and the air inlets of the two air inlet pipes are respectively connected to the straight-through ports of the tee joint.
Further, the first polyurethane raw material container and the second polyurethane raw material container are equal in size and shape.
Furthermore, liquid adding funnels are mounted on the first polyurethane raw material container and the second polyurethane raw material container, and are used for supplementing liquid for the first polyurethane raw material container and the second polyurethane raw material container.
Further, the liquid inlet of the liquid outlet pipe is positioned at the bottom of the first polyurethane raw material container/the second polyurethane raw material container.
Further, the air outlet of the air inlet pipe is positioned at the top of the first polyurethane raw material container/the second polyurethane raw material container.
Further, a negative pressure meter is installed on the compressed air main pipe.
The invention has the beneficial effects that: according to the invention, the compressed air is introduced from the compressed air main pipe and is respectively injected into the first polyurethane raw material container and the second polyurethane raw material container through the two same air inlet pipes, so that the raw material liquids in the first polyurethane raw material container and the second polyurethane raw material container are discharged through the same liquid outlet pipes under pressure, and the liquid outlet amounts of the raw material liquid in the first polyurethane raw material container and the raw material liquid in the second polyurethane raw material container are the same.
Drawings
FIG. 1 is a schematic structural view of a pneumatic automatic liquid injection device according to an embodiment of the present invention;
wherein: 1. a first polyurethane raw material container; 2. a second polyurethane feedstock container; 3. a liquid outlet pipe; 4. an air inlet pipe; 5. a negative pressure gauge; 6. a liquid adding funnel; 7. a valve; 8. a grouting pipe; 9. and a compressed air main pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a pneumatic automatic liquid injection device for a coal mine, which comprises a first polyurethane raw material container 1 and a second polyurethane raw material container 2 which are closed as shown in figure 1; liquid outlet pipes 3 are arranged in the first polyurethane raw material container 1 and the second polyurethane raw material container 2, and solution outlets of the two liquid outlet pipes 3 are connected to the same position of the grouting pipe 8; air inlet pipes 4 are arranged in the first polyurethane raw material container 1 and the second polyurethane raw material container 2, and air inlets of the two air inlet pipes 4 are connected to the same position of the air pressure main pipe 9; the air inlet pipe 4 is used for introducing isobaric compressed air into the first polyurethane raw material container 1 and the second polyurethane raw material container 2 which are closed, so that the liquids in the first polyurethane raw material container 1 and the second polyurethane raw material container 2 are simultaneously and equivalently discharged through the liquid outlet pipe 3.
According to the invention, the compressed air is introduced from the compressed air main pipe and is respectively injected into the first polyurethane raw material container and the second polyurethane raw material container through the two same air inlet pipes, so that the raw material liquids in the first polyurethane raw material container and the second polyurethane raw material container are discharged through the same liquid outlet pipes under pressure, and the liquid outlet amounts of the raw material liquid in the first polyurethane raw material container and the raw material liquid in the second polyurethane raw material container are the same.
In the embodiment of the present invention, the two liquid outlet pipes 3 are designed to have the same length and diameter, and similarly, the two air inlet pipes 4 are also designed to have the same length and diameter. Therefore, when compressed air enters the two air inlet pipes 4 from the compressed air main pipe 9, the pressure of the two divided compressed air is the same, so that the pressure change states in the first polyurethane raw material container 1 and the second polyurethane raw material container 2 are also the same, and further, under the pressure action in the first polyurethane raw material container 1 and the second polyurethane raw material container 2, the liquid amounts discharged from the two liquid outlet pipes 3 are also the same, so that 1:1 mixing of the two liquids is realized.
In this embodiment, the liquid outlets of the two liquid outlets 3 are connected to the grouting pipe 8 through a tee, and the liquid outlets of the two liquid outlets 3 are respectively connected to a straight port of the tee. By the arrangement, the liquid guided out by the two liquid outlet pipes 3 can be equivalently gathered at the joint of the grouting pipe 8, so that the liquid is fully mixed and reacted to form the expected product.
Specifically, the air inlets of the two air inlet pipes 4 are connected with the compressed air main pipe 9 through a tee joint, and the air inlets of the two air inlet pipes 4 are respectively connected to the straight-through ports of the tee joint. Through setting up like this, can guarantee that two strands of compressed air that compressed air house steward 9 cut apart evenly distribute two air-supply lines 4, and then guaranteed that the pressure in first polyurethane raw material container 1 and the second polyurethane raw material container 2 is the same.
In order to achieve the desired effect, in this embodiment, the first polyurethane material container 1 and the second polyurethane material container 2 are equal in size and shape. In addition, the first polyurethane material container 1 and the second polyurethane material container 2 are placed on the same horizontal plane, and in short, the difference in the state between the first polyurethane material container 1 and the second polyurethane material container 2 is minimized, and the influence of external factors on the state of the first polyurethane material container 1 and the second polyurethane material container 2 is reduced.
Exemplarily, when the liquids of the first polyurethane raw material container 1 and the second polyurethane raw material container 2 are used up, the liquids can be respectively replenished, the liquid replenishing efficiency is improved by installing the liquid adding hoppers 6 on the first polyurethane raw material container 1 and the second polyurethane raw material container 2, and the valves 7 are additionally installed on the liquid replenishing pipes of the first polyurethane raw material container 1 and the second polyurethane raw material container 2, so that the first polyurethane raw material container 1 and the second polyurethane raw material container 2 after the liquid replenishing is finished are both closed containers.
As a possible implementation manner, the liquid inlet of the liquid outlet pipe 3 is positioned at the bottom of the first polyurethane raw material container 1/the second polyurethane raw material container 2 so as to fully utilize the raw material liquid in the first polyurethane raw material container 1/the second polyurethane raw material container 2.
It should be noted that the air outlet of the air inlet pipe 4 is located at the top of the first polyurethane raw material container 1/the second polyurethane raw material container 2 and is located above the liquid level of the raw material liquid, so as to prevent the raw material liquid from flowing back along the air inlet pipe 4, and moreover, the pressure space is formed in the first polyurethane raw material container 1 and the second polyurethane raw material container 2, so that the gas presses the raw material liquid inside the first polyurethane raw material container 1/the second polyurethane raw material container 2 downwards from the top, and then the raw material liquid is discharged from the liquid outlet pipe 3 under the action of pressure.
In addition, in order to effectively control the pressure in the first polyurethane raw material container 1 and the second polyurethane raw material container 2, the negative pressure gauge 5 is installed on the compressed air main pipe 9, so that the air pressure of the compressed air main pipe 9 can be detected, the pressure of the first polyurethane raw material container 1 and the pressure of the second polyurethane raw material container 2 can be further calculated, and the pressure is prevented from being too large or too small.
Claims (8)
1. The pneumatic automatic liquid injection device for the coal mine is characterized by comprising a first polyurethane raw material container (1) and a second polyurethane raw material container (2) which are closed;
liquid outlet pipes (3) are arranged in the first polyurethane raw material container (1) and the second polyurethane raw material container (2), and solution outlets of the two liquid outlet pipes (3) are connected to the same position of the grouting pipe (8);
air inlet pipes (4) are arranged in the first polyurethane raw material container (1) and the second polyurethane raw material container (2), and air inlets of the two air inlet pipes (4) are connected to the same position of an air pressure main pipe (9);
the air inlet pipe (4) is used for introducing isobaric compressed air into the first polyurethane raw material container (1) and the second polyurethane raw material container (2) which are closed, so that liquid in the first polyurethane raw material container (1) and liquid in the second polyurethane raw material container (2) can be discharged through the liquid outlet pipe (3) in an equivalent amount at the same time.
2. The pneumatic automatic liquid injection device for the coal mine as claimed in claim 1, wherein the liquid outlets of the two liquid outlet pipes (3) are connected with the grouting pipe (8) through a tee joint, and the liquid outlets of the two liquid outlet pipes (3) are respectively connected to the through port of the tee joint.
3. The pneumatic automatic liquid injection device for the coal mine as claimed in claim 2, wherein the air inlets of the two air inlet pipes (4) are connected with the compressed air main pipe (9) through a tee joint, and the air inlets of the two air inlet pipes (4) are respectively connected to the through ports of the tee joint.
4. The pneumatic automatic liquid injection device for the coal mine according to claim 2 or 3, wherein the first polyurethane raw material container (1) and the second polyurethane raw material container (2) are equal in size and shape.
5. The pneumatic automatic liquid injection device for the coal mine is characterized in that liquid injection funnels (6) are mounted on the first polyurethane raw material container (1) and the second polyurethane raw material container (2), and the liquid injection funnels (6) are used for supplementing liquid to the first polyurethane raw material container (1) and the second polyurethane raw material container (2).
6. The pneumatic automatic liquid injection device for the coal mine according to claim 1, wherein a liquid inlet of the liquid outlet pipe (3) is positioned at the bottom of the first polyurethane raw material container (1)/the second polyurethane raw material container (2).
7. The pneumatic automatic liquid injection device for the coal mine is characterized in that an air outlet of the air inlet pipe (4) is positioned at the top of the first polyurethane raw material container (1)/the second polyurethane raw material container (2).
8. The pneumatic automatic liquid injection device for the coal mine as claimed in claim 6 or 7, wherein a negative pressure meter (5) is mounted on the compressed air main pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603940.5A CN111608610A (en) | 2020-06-29 | 2020-06-29 | Pneumatic automatic liquid injection device for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603940.5A CN111608610A (en) | 2020-06-29 | 2020-06-29 | Pneumatic automatic liquid injection device for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111608610A true CN111608610A (en) | 2020-09-01 |
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ID=72194885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010603940.5A Pending CN111608610A (en) | 2020-06-29 | 2020-06-29 | Pneumatic automatic liquid injection device for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111608610A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201320508Y (en) * | 2008-10-25 | 2009-10-07 | 华晋焦煤有限责任公司 | Pneumatic injection device made of hole sealing materials |
| CN201865621U (en) * | 2010-11-29 | 2011-06-15 | 永贵能源开发有限责任公司 | Gas pressure type hole packer |
| CN102242639A (en) * | 2010-05-12 | 2011-11-16 | 淮南矿业(集团)有限责任公司 | Compressed air grouting device |
| CN204571919U (en) * | 2015-05-08 | 2015-08-19 | 中煤科工集团重庆研究院有限公司 | Drilling and hole sealing device for coal mine downward coal bed gas pressure measurement |
| CN206830233U (en) * | 2017-06-20 | 2018-01-02 | 陕西陕煤韩城矿业有限公司 | Pneumatic automatic liquid matching device for filling |
| CN212508207U (en) * | 2020-06-29 | 2021-02-09 | 陕西陕煤韩城矿业有限公司 | Pneumatic automatic liquid injection device for coal mine |
-
2020
- 2020-06-29 CN CN202010603940.5A patent/CN111608610A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201320508Y (en) * | 2008-10-25 | 2009-10-07 | 华晋焦煤有限责任公司 | Pneumatic injection device made of hole sealing materials |
| CN102242639A (en) * | 2010-05-12 | 2011-11-16 | 淮南矿业(集团)有限责任公司 | Compressed air grouting device |
| CN201865621U (en) * | 2010-11-29 | 2011-06-15 | 永贵能源开发有限责任公司 | Gas pressure type hole packer |
| CN204571919U (en) * | 2015-05-08 | 2015-08-19 | 中煤科工集团重庆研究院有限公司 | Drilling and hole sealing device for coal mine downward coal bed gas pressure measurement |
| CN206830233U (en) * | 2017-06-20 | 2018-01-02 | 陕西陕煤韩城矿业有限公司 | Pneumatic automatic liquid matching device for filling |
| CN212508207U (en) * | 2020-06-29 | 2021-02-09 | 陕西陕煤韩城矿业有限公司 | Pneumatic automatic liquid injection device for coal mine |
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