CN206737896U - One kind can open and close type rig screen casing cap - Google Patents
One kind can open and close type rig screen casing cap Download PDFInfo
- Publication number
- CN206737896U CN206737896U CN201720471371.7U CN201720471371U CN206737896U CN 206737896 U CN206737896 U CN 206737896U CN 201720471371 U CN201720471371 U CN 201720471371U CN 206737896 U CN206737896 U CN 206737896U
- Authority
- CN
- China
- Prior art keywords
- shaft
- medial launder
- connectivity
- spring
- card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
One kind can open and close type rig screen casing cap, the purpose is to can quickly be opened in coal seam, effectively prevent screen casing from exiting；The utility model includes pole cap, shaft, steady pin, rotation card, spring, sliding pin, packing ring and back-up ring；Pole cap is connected by the internal thread of its afterbody with shaft upper external screw thread, and shaft on both sides of the middle is provided with connectivity elongated hole, and the head for rotating card is that afterbody is beveled tip with perforated circular arc；Rotation card shares two, and two revotating card sheet heads are movably arranged on the top in connectivity elongated hole by steady pin, and steady pin activity passes through two revotating card sheet head eyelets；Shaft front and the middle and lower part of reverse side are provided with groove, and medial launder is provided with groove, and medial launder is located at the bottom of connectivity elongated hole, and medial launder is front and rear connectivity groove；Spring stage casing is enclosed on sliding pin, and both ends of the spring extension is connected to the middle part of two rotation cards；Sliding pin is slidably installed in medial launder through spring stage casing and shaft.
Description
Technical field
The utility model is related to one kind can open and close type screen casing cap.
Background technology
Mine belongs to geological structure complexity, the geological conditions of coal seam soft broken more, because of drilling hole in the construction of this coal bed drilling
Wall caves in occurs the problems such as blocking gas pumping passage, lower screen casing difficulty often, seriously restricts this drainage from coal seam effect.Screen casing
Stay in coal seam and be advantageous to the extraction of gas, but sometimes when drill bit of drilling machine rotation is exited, coal hole easily collapses；Sometimes rig bores
Head rotation when exiting screen casing is also exited with drill bit, be unfavorable for the extraction of gas, staff operate it is time-consuming, laborious, sometimes
Also redrilling is needed to descend screen casing again.
The content of the invention
The purpose of the utility model is to overcome the shortcomings of above-mentioned prior art, there is provided one kind can quickly be opened in coal seam, had
What effect prevented that screen casing from exiting can open and close type rig screen casing cap.
The utility model includes pole cap, shaft, steady pin, rotation card, spring, sliding pin, packing ring and back-up ring；Pole cap leads to
The internal thread for crossing its afterbody is connected with shaft upper external screw thread, and shaft on both sides of the middle is provided with connectivity elongated hole, rotates the head of card
Portion is that afterbody is beveled tip with perforated circular arc, and rotation card shares two, and the head of two rotation cards passes through steady pin
The top being movably arranged in connectivity elongated hole, steady pin activity pass through two revotating card sheet head eyelets, and rotation card can enclose
Rotated around steady pin, be can be inserted into after the afterbody opening of two rotation cards in coal seam, screen casing is fixed in coal hole, screen casing is in the future
As gas pumping passage, beneficial to being mined after first mash gas extraction.
Shaft front and the middle and lower part of reverse side are provided with groove, are provided with medial launder in groove, medial launder is located at connectivity elongated hole
Bottom, medial launder is front and rear connectivity groove, sliding pin is housed on medial launder, spring stage casing is enclosed on sliding pin, both ends of the spring
Extension is connected to the middle part of two rotation cards；Sliding pin rear end is cased with packing ring, back-up ring fixed position；Sliding pin passes through
Spring stage casing and shaft are slidably installed in medial launder, and sliding pin can move up and down along medial launder, are driven and rotated by spring
Card is opened or shared, and in drilling, rotation card is shared, and is opened, is stuck in coal seam when drill bit exits, can be fixed on screen casing
In coal hole.Inner shield ring is provided with the both ends of spring stage casing.
Drill bit is connected by its tailing screw flight with drilling rod, and the motor rotation of rig drives drilling rod to rotate, and drilling rod turns, and drill bit is just
Rotation, passes through the rotary pore-forming of drill bit；Screen casing cap and screen casing are put among drilling rod, when bit exits, screen casing cap and sieve
Pipe is stayed in coal hole, beneficial to the extraction of the gas of next step.
The utility model using can open and close type drill bit after pore-forming by tripping in screen casing inside drilling rod, wherein front end be can
Open and close type screen casing cap device, followed by the screen casing of threaded connection, screen casing is fixed in coal hole, then plays out drilling rod, will
Can open and close type screen casing cap and screen casing stay in hole, it is ensured that form reliable gas pumping passage.Being characterized in can be quick in coal seam
Open, effectively prevent screen casing from exiting, securely and reliably, it is ensured that enough reliable gas pumping passages are formed in coal seam.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is sliding pin and shaft and the partial enlarged drawing of spring coupling part position；
In figure：1st, pole cap, 2, shaft, 3, steady pin, 4, rotation card, 5, both ends of the spring extension, 6, sliding pin, 7, in
Between groove, 8, groove, 9, connectivity elongated hole, 10, packing ring, 11, back-up ring, 12, inner shield ring, 13, spring stage casing,.
Embodiment
Pole cap 1 is connected by the internal thread of its afterbody with the upper external screw thread of shaft 2, and the on both sides of the middle of shaft 2 is provided with connectivity
Elongated hole 9, the head band perforation of card 4 is rotated, afterbody is beveled tip, and rotation card 4 shares two, the head of two rotation cards 4
Portion is arranged on the top in connectivity elongated hole 9 by steady pin 3, and two rotation cards 4 can rotate around steady pin 3, two rotations
It is can be inserted into after turning the afterbody opening of card 4 in coal seam, screen casing be fixed in coal hole.The front of shaft 2 and the middle and lower part of reverse side are opened
Fluted 8, groove 8 is interior to be provided with medial launder 7, and medial launder 7 is located at the bottom of connectivity elongated hole 9, and medial launder 7 is front and rear connectivity
Groove, equipped with being enclosed in sliding pin 6, spring stage casing 13 on sliding pin 6 on medial launder 7, both ends of the spring extension 5 is connected to two
The middle part of individual rotation card 4；Inner shield ring 12 is provided between spring stage casing 13 and shaft 2；The rear end of sliding pin 6 is cased with packing ring 10, gear
Enclose 11 fixed positions；Sliding pin 6 can be slidably mounted in medial launder 7 through spring stage casing 13 and shaft 2, and sliding pin 6 can be in
Between groove 7 move up and down, drive revotating card piece 4 to open or share by spring, rotation card 4 is shared in drilling, and drill bit exits
Shi Zhangkai, it is stuck in coal seam, screen casing can be fixed in coal hole.
Claims (2)
1. one kind can open and close type rig screen casing cap, it is characterized in that including pole cap, shaft, steady pin, rotation card, spring, slip
Pin, packing ring and back-up ring；Pole cap is connected by the internal thread of its afterbody with shaft upper external screw thread, and shaft on both sides of the middle is provided with insertion
Property elongated hole, rotate card head be with perforated circular arc, afterbody is beveled tip；Rotation card shares two, two rotations
Card head is movably arranged on the top in connectivity elongated hole by steady pin, and steady pin activity passes through two revotating card sheet heads
Eyelet；Shaft front and the middle and lower part of reverse side are provided with groove, are provided with medial launder in groove, medial launder is located under connectivity elongated hole
Portion, medial launder are front and rear connectivity groove；Sliding pin is housed, spring stage casing is enclosed on sliding pin, and both ends of the spring extends on medial launder
Section is connected to the middle part of two rotation cards；Sliding pin rear end is cased with packing ring, back-up ring fixed position；Sliding pin passes through spring
Stage casing and shaft are slidably installed in medial launder.
2. as claimed in claim 1 can open and close type rig screen casing cap, it is characterized in that being provided with inner shield ring at the both ends of spring stage casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471371.7U CN206737896U (en) | 2017-05-02 | 2017-05-02 | One kind can open and close type rig screen casing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471371.7U CN206737896U (en) | 2017-05-02 | 2017-05-02 | One kind can open and close type rig screen casing cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206737896U true CN206737896U (en) | 2017-12-12 |
Family
ID=60563413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720471371.7U Expired - Fee Related CN206737896U (en) | 2017-05-02 | 2017-05-02 | One kind can open and close type rig screen casing cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206737896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930735A (en) * | 2017-05-02 | 2017-07-07 | 阳泉煤业集团华越机械有限公司 | One kind can open and close type rig screen casing cap |
| CN112647877A (en) * | 2020-12-25 | 2021-04-13 | 重庆市能源投资集团科技有限责任公司 | Soft coal seam branch drilling and pipe lowering guiding device and efficient extraction method |
-
2017
- 2017-05-02 CN CN201720471371.7U patent/CN206737896U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930735A (en) * | 2017-05-02 | 2017-07-07 | 阳泉煤业集团华越机械有限公司 | One kind can open and close type rig screen casing cap |
| CN112647877A (en) * | 2020-12-25 | 2021-04-13 | 重庆市能源投资集团科技有限责任公司 | Soft coal seam branch drilling and pipe lowering guiding device and efficient extraction method |
| CN112647877B (en) * | 2020-12-25 | 2022-09-16 | 重庆市能源投资集团科技有限责任公司 | Soft coal seam branch drilling and pipe lowering guiding device and efficient extraction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20190502 |