CN201560742U - One-way stop valve for drill bit of down-the-hole hammer - Google Patents
One-way stop valve for drill bit of down-the-hole hammer Download PDFInfo
- Publication number
- CN201560742U CN201560742U CN2010200375423U CN201020037542U CN201560742U CN 201560742 U CN201560742 U CN 201560742U CN 2010200375423 U CN2010200375423 U CN 2010200375423U CN 201020037542 U CN201020037542 U CN 201020037542U CN 201560742 U CN201560742 U CN 201560742U
- Authority
- CN
- China
- Prior art keywords
- valve body
- bore bit
- air hammer
- hole air
- valve
- 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
Links
- 238000000034 method Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 description 7
- 238000009527 percussion Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a one-way stop valve of down-the-hole impacter bore bit, which belongs to oil geophysical prospecting and ground mine drilling equipment, the utility model comprises a bore bit guide locator, a valve body, a one-way valve core, a spring seat and a snap ring, wherein the valve body is reamed and processed under the air flue in the bore bit guide locator, in the processed valve body, the upper part of the valve core is propped against the upper inner step of the valve body, the upper end of the spring is sleeved on the step in the valve core and propped against the valve core, the lower end is sleeved on the spring seat, the snap ring is arranged behind the spring seat and is arranged on the lower inner step of the valve body, the upper part of the bore bit guide locator is connected with the joint at the lower part of the down-the-hole impacter, the lower part of the bore bit guide locator is connected with a drill bit, the utility model can effectively avoid the situation that the down, ensuring the well drilling operation to be carried out smoothly.
Description
Technical field
Down-the-hole air hammer bore bit unidirectional stop valve, be used for petroleum exploration, the ore deposit drilling well use silt that the process of down-the-hole air hammer percussion drilling stops the shaft bottom because of the effect of mud column pressure is pressed in the down-the-hole air hammer by counter, belong to petroleum exploration, drilling equipment manufacturing technology field, ore deposit.
Background technology
At present the petroleum exploration drilling well, in the drilling well of ore deposit, drilling well on competent bed, and drilling depth is during less than 50 meters, the percussion drilling of general use down-the-hole air hammer, when in regional drilling wells such as river shoal, fossil river beds, because the deposition of gravel, silt, and phreatic surface is higher, the mine water column pressure is big, bigger water column pressure causes after adjunction drilling tool or other reason interruption high-pressure air source, the silt in shaft bottom is pressed in the down-the-hole air hammer by counter under the effect of mud column pressure, causes down-the-hole air hammer to be stuck and can not work, and has a strong impact on drillng operation.
Summary of the invention
The purpose of this utility model is during at existing down-the-hole air hammer percussion drilling, the silt that the shaft bottom may take place is pressed in the down-the-hole air hammer by counter, the problem that causes down-the-hole air hammer to be stuck and exist, designed the down-the-hole air hammer unidirectional stop valve, unidirectional stop valve is opened to make to creep into smoothly and is carried out when normally creeping into, after adjunction drilling tool or other reason interruption high-pressure air source, can close the passage in the down-the-hole air hammer, stop the silt in shaft bottom can not to be pressed in the down-the-hole air hammer by counter because of the effect of mud column pressure.
The technical solution of the utility model is: the utility model comprises the bore bit orienting locator, valve body, nonreturn valve core, spring, spring base, snap ring, reaming processing valve body below the inner air flue of bore bit orienting locator, in the valve body that processes, spool top withstands on the upper inner platform rank of valve body, the spring upper end is enclosed within on the interior step of spool, and withstand on the spool, the lower end is enclosed within on the spring base, there is a snap ring spring base back, snap ring is on the lower inner platform rank of valve body, bore bit orienting locator top is connected with the joint of down-the-hole air hammer bottom, and bore bit orienting locator bottom is connected with drill bit.
When down-the-hole air hammer is worked, just there is high-pressure air source to pass through, spool just moves down under the effect of high pressure draught, opens gas channel, and air-flow passes through from air flue, and system's operate as normal reaches the purpose of normal drilling well.
After adjunction drilling tool or other reason make down-the-hole air hammer interrupt high-pressure air source, spool is under the effect of initial tension of spring, spool top withstands on the topping bar of valve body, unidirectional stop valve is closed, when silt upwards flows from the shaft bottom, unidirectional stop valve just stops silt upwards to flow in the down-the-hole air hammer, thereby avoids down-the-hole air hammer to be stuck and do not work.
The utility model beneficial effect is: can effectively avoid the down-hole percussion drill well when adjunction drilling tool or other reason interruption high-pressure air source, the silt in shaft bottom is counter to be pressed in the down-the-hole air hammer, cause down-the-hole air hammer to be stuck and the generation of inoperable situation, guarantee that drillng operation carries out smoothly.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
The specific embodiment
The utility model comprises bore bit orienting locator 6, valve body 5, nonreturn valve core 4, spring 3, spring base 2, snap ring 1.
Reaming processing valve body 5 below bore bit orienting locator 6 inner air flues, in the valve body 5 that processes, nonreturn valve core 4 tops withstand on the upper inner platform rank of valve body 5, spring 3 upper ends are enclosed within on the nonreturn valve core 4 interior steps, and withstand on the nonreturn valve core 4, and the lower end is enclosed within on the spring base 2, there is a snap ring 1 spring base 2 back, snap ring 1 is on the lower inner platform rank of valve body 5, and bore bit orienting locator 6 tops are connected with the joint of down-the-hole air hammer bottom, and bore bit orienting locator 6 bottoms are connected with drill bit.
When down-the-hole air hammer is worked, just there is high-pressure air source to pass through, spool 4 overcomes the elastic force of spring 3 under the effect of high pressure draught, move down along valve body 5 inwalls, opens gas channel, and gas passes through from air flue, and system's operate as normal reaches the purpose of normal drilling well.
After adjunction drilling tool or other reason make down-the-hole air hammer interrupt high-pressure air source, spool 4 is under the effect of spring 3 pretightning forces, spool 4 tops withstand on the topping bar of valve body 5, unidirectional stop valve is closed, when silt upwards flows from the shaft bottom, unidirectional stop valve just stops silt upwards to flow in the down-the-hole air hammer, thereby avoids down-the-hole air hammer to be stuck and do not work, and guarantees that drillng operation can carry out smoothly.
Claims (3)
1. down-the-hole air hammer bore bit unidirectional stop valve, comprise bore bit orienting locator, valve body, nonreturn valve core, spring, spring base, snap ring, it is characterized in that: reaming processing valve body below the inner air flue of bore bit orienting locator, in the valve body that processes, spool top withstands on the upper inner platform rank of valve body, and the spring upper end is enclosed within on the interior step of spool, and withstand on the spool, the lower end is enclosed within on the spring base, and there is a snap ring spring base back, and snap ring is on the lower inner platform rank of valve body.
2. down-the-hole air hammer bore bit unidirectional stop valve according to claim 1 is characterized in that bore bit orienting locator top is connected with the joint of down-the-hole air hammer bottom.
3. down-the-hole air hammer bore bit unidirectional stop valve according to claim 1 is characterized in that bore bit orienting locator bottom is connected with drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200375423U CN201560742U (en) | 2010-01-05 | 2010-01-05 | One-way stop valve for drill bit of down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200375423U CN201560742U (en) | 2010-01-05 | 2010-01-05 | One-way stop valve for drill bit of down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201560742U true CN201560742U (en) | 2010-08-25 |
Family
ID=42625889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200375423U Expired - Fee Related CN201560742U (en) | 2010-01-05 | 2010-01-05 | One-way stop valve for drill bit of down-the-hole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201560742U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102619472A (en) * | 2012-04-06 | 2012-08-01 | 中国石油天然气股份有限公司 | Anti-backflow air hammer drill bit for foam drilling |
| CN103667562A (en) * | 2013-12-10 | 2014-03-26 | 天津市三特电子有限公司 | Built-in one-way valve type automatic high-temperature imaging protective device |
| CN105378206A (en) * | 2013-07-12 | 2016-03-02 | 钻岩气动有限公司 | Dynamic seal tube for a down hole hammer drill |
-
2010
- 2010-01-05 CN CN2010200375423U patent/CN201560742U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102619472A (en) * | 2012-04-06 | 2012-08-01 | 中国石油天然气股份有限公司 | Anti-backflow air hammer drill bit for foam drilling |
| CN105378206A (en) * | 2013-07-12 | 2016-03-02 | 钻岩气动有限公司 | Dynamic seal tube for a down hole hammer drill |
| CN105378206B (en) * | 2013-07-12 | 2019-03-26 | 钻岩气动有限公司 | Dynamic sealing pipe for underground hammer drill |
| CN103667562A (en) * | 2013-12-10 | 2014-03-26 | 天津市三特电子有限公司 | Built-in one-way valve type automatic high-temperature imaging protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20190105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |