Layered metering extraction device for multi-coal-seam gas extraction

Abstract

The utility model discloses a layered metering extraction device for multi-coal-seam gas extraction, which relates to the technical field of gas extraction and comprises a bottom layer pipe, a first gas extraction hole is fixedly mounted at the bottom of the bottom layer pipe, an auger rotating shaft is fixedly mounted at the bottom of the first gas extraction hole, a conical head is fixedly mounted at the bottom of the auger rotating shaft, and a second gas extraction hole is fixedly mounted at the bottom of the conical head. A threaded connector is fixedly installed at the top of the bottom layer pipe, and a connecting ring is fixedly installed on the outer side of the middle of the bottom layer pipe. According to the layered metering extraction device for multi-coal-seam gas extraction, the conical head can be inserted into a coal seam, the auger rotating shaft can be driven to rotate by rotating the rotating rod, so that the layered metering extraction device for multi-coal-seam gas extraction is inserted into the coal seam, and gas at the bottommost layer can be extracted into a bottom layer pipe through a first extraction hole; gas in the middle layer is pumped into the middle pipe through the second gas pumping hole, and gas in the top layer is pumped into the top layer pipe through the third gas pumping hole.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction, in particular to a layered metering extraction device for multi-coal seam gas extraction. Background Art

[0002] Gas extraction refers to drilling into coal seams and gas accumulation areas, connecting the boreholes to special pipelines, and using extraction equipment to extract gas from coal seams and goafs to the ground for use; or discharging it into the total return air flow. Gas extraction is not only an important measure to reduce the amount of gas outflow during mining, prevent gas over-limit and accumulation, and prevent gas explosions and coal and gas outburst accidents, but also can turn harm into benefit and be developed and utilized as a resource associated with coal.

[0003] The existing referenceable Chinese utility model patent has a publication number of CN216342300U, which discloses a gas extraction device, including a suction pipe, a mounting frame and a hole plugging mechanism; the suction pipe: a first flange is provided at the top opening thereof, and a lower head guard is provided at the lower end of the suction pipe; the mounting frame: located above the outside of the suction pipe, a suction mechanism is provided in the mounting hole opened in the middle of the top plate of the mounting frame, and the lower end of the suction mechanism is fixedly connected to the first flange by bolts; the hole plugging mechanism: arranged on the outside of the suction pipe, the lower end of the hole plugging mechanism is slidably connected to the upper surface of the lower head guard, and a third flange is provided at the top end of the hole plugging mechanism; wherein: it also includes an adjusting nut, the adjusting nut is threadedly connected to the upper end of the outer arc surface of the suction pipe, and the gas extraction device can quickly seal the gap between the mining hole and the suction pipe to prevent gas leakage from the gap between the mining hole and the suction pipe, thereby improving the safety of gas extraction.

[0004] When extracting gas from coal seams, existing gas extraction devices need to extract gas from different coal seams separately for inspection, which is cumbersome to operate and inconvenient for layered metering extraction from multiple coal seams, resulting in cumbersome operation. Utility Model Content

[0005] The utility model aims to overcome the problem in the prior art that multi-coal seam stratified metering extraction is inconvenient, and provides a stratified metering extraction device for multi-coal seam gas extraction.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A layered metering extraction device for multi-coal seam gas extraction, comprising:

[0008] A bottom layer tube, a first air suction hole is fixedly installed on the bottom of the bottom layer tube, an auger shaft is fixedly installed on the bottom of the No. 1 air suction hole, a cone head is fixedly installed on the bottom of the auger shaft, and the cone head is conical in shape, a threaded interface is fixedly installed on the top of the bottom layer tube, a connecting ring is fixedly installed on the middle outer side of the bottom layer tube, and the connecting ring is annular in shape, a second air suction hole is fixedly installed on the top of the connecting ring, an intermediate tube is fixedly installed on the top of the No. 2 air suction hole, a connecting block is fixedly installed on the middle outer side of the intermediate tube, and the connecting block is annular in shape, a third air suction hole is fixedly installed on the top of the connecting block, and a top layer tube is fixedly installed on the top of the No. 3 air suction hole.

[0009] In a preferred embodiment, a threaded pipe is movably connected inside the threaded interface, an inner layer pipe is fixedly installed on the top of the threaded pipe, and the inner layer pipe is a structure for connecting to a bottom layer pipe.

[0010] In a preferred embodiment, an internal threaded ring is fixedly installed on the top of the inner layer tube, and a middle layer tube is fixedly installed on the outer side of the inner layer tube, and the middle layer tube is a structure for connecting the intermediate tube.

[0011] In a preferred embodiment, an outer tube is fixedly mounted on the outer side of the middle tube, a sealing ring is fixedly mounted on the bottom of the outer tube, and the sealing ring is simultaneously mounted on the bottom of the outer tube, the middle tube and the inner tube.

[0012] In a preferred embodiment, a threaded ring is movably connected inside the internal threaded ring, a connecting pipe is fixedly installed on the top of the threaded ring, and the connecting pipe is a structure used for connection.

[0013] In a preferred embodiment, three vacuum pumps are fixedly installed on three sides of the connecting pipe, and an air outlet pipe is fixedly installed on one side of the vacuum pump, and the air outlet pipe is a structure for discharging gas.

[0014] In a preferred embodiment, a mounting block is fixedly mounted on the top of the connecting pipe, and two rotating rods are fixedly mounted on both sides of the mounting block. The rotating rods are structures for driving the whole to rotate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The stratified metering extraction device for gas extraction from multiple coal seams can be inserted into the coal seam through the cone head, and the rotating rod can be rotated to drive the auger shaft to rotate, so that the stratified metering extraction device for gas extraction from multiple coal seams can be inserted into the coal seam, and the gas in the lowest layer can be extracted into the bottom pipe through the No. 1 extraction hole, the gas in the middle layer can be extracted into the middle pipe through the No. 2 extraction hole, and the gas in the top layer can be extracted into the top pipe through the No. 3 extraction hole, thereby improving the practicality of the stratified metering extraction device for gas extraction from multiple coal seams, so as to facilitate stratified extraction of gas from multiple coal seams;

[0017] 2. The stratified metering extraction device for multi-coal seam gas extraction is connected by threaded rings and internal threaded rings. The gas inside the bottom pipe, middle pipe and bottom and top pipes can be extracted from the three outlet pipes respectively through three vacuum pumps. The vacuum pumps can extract the gas quantitatively, which improves the practicability of the stratified metering extraction device for multi-coal seam gas extraction. The inner pipe, middle pipe and outer pipe have a lengthening effect, which improves the convenience of the stratified metering extraction device for multi-coal seam gas extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the bottom tube in the utility model;

[0020] Figure 3 It is a schematic diagram of the connecting ring in the utility model;

[0021] Figure 4 It is a schematic diagram of the threaded pipe in the utility model;

[0022] Figure 5 It is a schematic diagram of the thread ring in the utility model.

[0023] 1. Bottom layer pipe; 11. No. 1 exhaust hole; 12. Auger shaft; 13. Cone head; 14. Threaded interface; 2. Connecting ring; 21. No. 2 exhaust hole; 22. Middle pipe; 23. Connecting block; 24. No. 3 exhaust hole; 25. Top layer pipe; 3. Threaded pipe; 31. Inner layer pipe; 32. Inner threaded ring; 33. Middle layer pipe; 34. Outer layer pipe; 35. Sealing ring; 4. Threaded ring; 41. Connecting pipe; 42. Exhaust pump; 43. Exhaust pipe; 44. Mounting block; 45. Rotating rod. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Combined with Figure 1-5 In this embodiment, a layered metering extraction device for multi-coal seam gas extraction includes: a bottom pipe 1, a No. 1 extraction hole 11 is fixedly installed at the bottom of the bottom pipe 1, a screw shaft 12 is fixedly installed at the bottom of the No. 1 extraction hole 11, a cone head 13 is fixedly installed at the bottom of the screw shaft 12, and the cone head 13 is conical in shape. A threaded interface 14 is fixedly installed at the top of the bottom pipe 1.

[0026] Specifically, the cone head 13 can be inserted into the coal seam, and the rotation of the auger shaft 12 can drive the layered metering extraction device for multi-coal seam gas extraction to be inserted into the coal seam, and the gas in each bottom layer can be extracted into the interior of the bottom pipe 1 through the No. 1 extraction hole 11.

[0027] A connecting ring 2 is fixedly installed on the middle outer side of the bottom tube 1, and the connecting ring 2 is in an annular shape. A No. 2 air exhaust hole 21 is fixedly installed on the top of the connecting ring 2, and an intermediate tube 22 is fixedly installed on the top of the No. 2 air exhaust hole 21. A connecting block 23 is fixedly installed on the middle outer side of the intermediate tube 22, and the connecting block 23 is in an annular shape. A No. 3 air exhaust hole 24 is fixedly installed on the top of the connecting block 23, and a top tube 25 is fixedly installed on the top of the No. 3 air exhaust hole 24.

[0028] Specifically, the middle pipe 22 and the bottom pipe 1 can be connected through the connecting ring 2, the gas in the middle layer can be sucked into the middle pipe 22 through the No. 2 exhaust hole 21, the top pipe 25 and the middle pipe 22 can be connected through the connecting block 23, and the gas in the top layer can be sucked into the top pipe 25 through the No. 3 exhaust hole 24, thereby improving the practicability of the stratified metering extraction device for multi-coal seam gas extraction.

[0029] The threaded pipe 3 is movably connected inside the threaded interface 14 , and an inner layer pipe 31 is fixedly installed on the top of the threaded pipe 3 .

[0030] An internal thread ring 32 is fixedly installed on the top of the inner layer tube 31 , and a middle layer tube 33 is fixedly installed on the outer side of the inner layer tube 31 .

[0031] An outer tube 34 is fixedly mounted on the outer side of the middle tube 33 , and a sealing ring 35 is fixedly mounted on the bottom of the outer tube 34 .

[0032] Specifically, the connection is made between the threaded pipe 3 and the threaded interface 14 , and sealing rings 35 are fixedly installed at the bottom of the inner layer pipe 31 , the middle layer pipe 33 and the outer layer pipe 34 , and the connection can be sealed by the sealing rings 35 .

[0033] The inner thread ring 32 is movably connected with a threaded ring 4 , and a connecting pipe 41 is fixedly installed on the top of the threaded ring 4 .

[0034] Three air pumps 42 are fixedly installed on three sides of the connecting pipe 41 , and an air outlet pipe 43 is fixedly installed on one side of the air pump 42 .

[0035] A mounting block 44 is fixedly mounted on the top of the connecting pipe 41 , and two rotating rods 45 are fixedly mounted on both sides of the mounting block 44 .

[0036] Specifically, the threaded ring 4 can be connected to the internal threaded ring 32, and can also be connected to the threaded interface 14. Through the three vacuum pumps 42 on the three sides of the connecting pipe 41, the gas inside the inner pipe 31, the middle pipe 33 and the outer pipe 34 can be extracted respectively, thereby improving the convenience of the stratified metering extraction device for multi-coal seam gas extraction. Three sealing rings are arranged at the bottom of the connecting pipe 41 to seal the connection.

[0037] Working principle: First, the threaded tube 3 is rotated and inserted into the interior of the threaded interface 14, so as to connect the inner tube 31 and the bottom tube 1. The connection can be sealed by the sealing ring 35 at the bottom of the inner tube 31, the middle tube 33 and the outer tube 34, thereby avoiding the problem of gas leakage at the connection, and improving the practicability of the stratified metering and extraction device for multi-coal seam gas extraction. The threaded ring 4 and the inner threaded ring 32 are engaged and connected, and the connection can be sealed by the sealing ring, thereby avoiding the problem of gas leakage, and improving the sealing effect of the stratified metering and extraction device for multi-coal seam gas extraction. At the same time, the threaded ring 4 can also be directly connected to the threaded interface 14, thereby shortening the length of the stratified metering and extraction device for multi-coal seam gas extraction. The cone head 13 can be inserted into the coal seam, and the rotating rod 45 is supported by the mounting block 44. By rotating the rotating rod 45, the stratified metering and extraction device for multi-coal seam gas extraction can be driven to rotate, thereby causing the auger shaft 12 to rotate. , driving the layered metering extraction device for multi-coal seam gas extraction to be inserted into the coal seam. After the layered metering extraction device for multi-coal seam gas extraction is inserted into the coal seam, the three gas extraction pumps 42 are operated, so that the gas in the bottom coal seam can be extracted into the bottom pipe 1 through the first extraction hole 11, and the extracted gas enters the inside of the connecting pipe 41 through the inner pipe 31, and the gas in the middle coal seam can be extracted into the inside of the middle pipe 22 through the second extraction hole 21, and the extracted gas can be extracted into the middle pipe 22 through the middle pipe 33. The gas is sent into the interior of the connecting pipe 41, and the gas in the top coal seam can be sucked into the interior of the outer pipe 34 through the No. 3 suction hole 24. The sucked gas is sent into the interior of the connecting pipe 41 through the outer pipe 34. The sucked three layers of gas can be respectively sent into the interiors of three suction pumps 42 through the connecting pipe 41, and finally discharged from the exhaust pipe 43 on one side of the suction pump 42. The extraction amount can be controlled by the suction pump 42, which improves the practicability and convenience of the stratified metering extraction device for multi-coal seam gas extraction.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A layered metering extraction device for multi-coal seam gas extraction, characterized in that: The stratified metering extraction device for extracting gas from multiple coal seams comprises a bottom pipe (1), a first extraction hole (11) is fixedly mounted on the bottom of the bottom pipe (1), an auger shaft (12) is fixedly mounted on the bottom of the first extraction hole (11), a cone head (13) is fixedly mounted on the bottom of the auger shaft (12), and the cone head (13) is in a conical shape, a threaded interface (14) is fixedly mounted on the top of the bottom pipe (1), and a connecting ring (14) is fixedly mounted on the middle outer side of the bottom pipe (1). 2), the connecting ring (2) is annular in shape, a No. 2 air extraction hole (21) is fixedly mounted on the top of the connecting ring (2), an intermediate tube (22) is fixedly mounted on the top of the No. 2 air extraction hole (21), a connecting block (23) is fixedly mounted on the middle outer side of the intermediate tube (22), the connecting block (23) is annular in shape, a No. 3 air extraction hole (24) is fixedly mounted on the top of the connecting block (23), and a top tube (25) is fixedly mounted on the top of the No. 3 air extraction hole (24).

2. A layered metering extraction device for multi-coal seam gas extraction according to claim 1, characterized in that: The threaded interface (14) is movably connected to a threaded pipe (3) inside, and an inner layer pipe (31) is fixedly installed on the top of the threaded pipe (3).

3. A layered metering extraction device for multi-coal seam gas extraction according to claim 2, characterized in that: An internal threaded ring (32) is fixedly mounted on the top of the inner layer tube (31), and a middle layer tube (33) is fixedly mounted on the outer side of the inner layer tube (31).

4. A layered metering extraction device for multi-coal seam gas extraction according to claim 3, characterized in that: An outer layer tube (34) is fixedly mounted on the outer side of the middle layer tube (33), and a sealing ring (35) is fixedly mounted on the bottom of the outer layer tube (34).

5. The stratified metering extraction device for multi-coal seam gas extraction according to claim 3 is characterized in that: The interior of the internal threaded ring (32) is movably connected to a threaded ring (4), and a connecting pipe (41) is fixedly installed on the top of the threaded ring (4).

6. A layered metering extraction device for multi-coal seam gas extraction according to claim 5, characterized in that: Three air pumps (42) are fixedly installed on three sides of the connecting pipe (41), and an air outlet pipe (43) is fixedly installed on one side of the air pump (42).

7. A layered metering extraction device for multi-coal seam gas extraction according to claim 6, characterized in that: A mounting block (44) is fixedly mounted on the top of the connecting pipe (41), and two rotating rods (45) are fixedly mounted on both sides of the mounting block (44).

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