CN202500495U - Check valve installed on roller bit - Google Patents
Check valve installed on roller bit Download PDFInfo
- Publication number
- CN202500495U CN202500495U CN2012201005136U CN201220100513U CN202500495U CN 202500495 U CN202500495 U CN 202500495U CN 2012201005136 U CN2012201005136 U CN 2012201005136U CN 201220100513 U CN201220100513 U CN 201220100513U CN 202500495 U CN202500495 U CN 202500495U
- Authority
- CN
- China
- Prior art keywords
- valve
- non retern
- check valve
- hollow
- valve body
- 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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- Check Valves (AREA)
Abstract
The utility model relates to a check valve installed on a roller bit. The check valve comprises a hollow valve core disposed in a top hole of a valve housing, and a spring and a valve body disposed in turn from bottom to top in the hollow valve core, wherein vent holes are disposed both in the valve body and in the hollow valve core. The check valve is disposed in the top hole of the valve housing, so rock slag does not contact with the check valve no matter how pervasive the rock slag is, thereby raising a cooling wind pressure of a bearing and preventing backward flowing of the rock slag. Therefore, by using the check valve, safety performance of the roller bit can be ensured and service life of the roller bit can be prolonged.
Description
Technical field
the utility model relates to a kind of non retern valve that is installed on the rock bit.
Background technology
rock bit is broken the important tool of rock, can adapt to the drilling well on various rock stratum and stratum, and rock bit generally comprises single-cone rotary drill bit, double-cone bit, tricone bit and four roller bit.Rock bit is by drill headstock and the floating bearing that is installed in this drill headstock end, and is made up of the unsteady gear wheel of floating bearing driving, and drill headstock is provided with cooling air passage and slagging channel.Because mining cone bit when rotary work, needs impact, crushing and shearing-crushing formation rock, so rock bit is compared with other brill, its application life is shorter.Yet; From the flimsy position of rock bit; Except that tooth be worn with cracked and fracture gear wheel is bored scrap, topmost problem is that bearing is worn and peels off, and shortened its application life greatly; And the be worn main cause of peeling off of bearing is that rock slag after formation rock is broken very easily gets in the bearing from cooling air passage and slagging channel, thereby causes the gear wheel back damage that is stuck.
also are equipped with non retern valve usually in order to prolong the application life of rock bit on drill headstock.Non retern valve of the prior art generally includes types such as butterfly type non retern valve, rubber check valve, plastics non retern valve.Butterfly type non retern valve wherein mainly is to be made up of spring and butterfly blade, promptly utilizes butterfly blade control cooling air passage and slagging channel work, but because spring is exposed to the outside, blocked easily and wearing and tearing in rock slag environment, thus whole non retern valve was lost efficacy; Rubber check valve mainly adopts the piston ring of fixing spring and funneling rubber leaf lobe to control cooling air passage and slagging channel work; Because the rock slag is a kind of adamantine material; Elastomeric material frequently contacts not only with it and very easily damages; But also be prone to cause funneling rubber leaf lobe to stop up, thereby whole non retern valve was lost efficacy; The plastics non retern valve is the nozzle-type structure, and valve block is to rely on blast just can open it, so when blowing-out, plastic nozzle is in the rock slag environment, and the rock slag is the material of unordered drift, very easily causes plastic nozzle to stop up, thereby whole non retern valve was lost efficacy.
Summary of the invention
The task of
the utility model provides a kind of utilization non retern valve is installed in the non retern valve on the rock bit that is installed in that mode in the valve body solves short and uneasy congruent problem in application life.
non retern valve that the utility model proposed is installed on the rock bit comprises hollow valve core spring and the valve body interior with being installed in hollow valve core from bottom to up successively that is installed in the valve body top-portion apertures, and is provided with steam vent in the side of valve body and hollow valve core.
Steam vent on
said hollow valve core is to be made up of the through hole that is arranged on interval preset distance on its sidewall.
Steam vent on
said valve body is that window constitutes on its sidewall by being arranged on.Said window is provided with 3 at grade at interval equidistantly.
The top of
said valve body also is equipped with valve gap and is installed in the spacing collar on the valve gap.
Hollow valve core and spring and valve body that
the utility model proposed to be installed in the non retern valve on the rock bit are installed in the valve body top-portion apertures; No matter how the rock slag spreads; Can not contact yet, not only can improve the cooling wind pressure of bearing, can also avoid the rock slag to pour in down a chimney with non retern valve; So the gear wheel drilling can guarantee its security performance and prolong its application life with this kind non retern valve.
Description of drawings
accompanying drawing 1 is the outward appearance cross-sectional view that is installed in the embodiment of non retern valve on the rock bit that the utility model proposes.
The specific embodiment
Referring to Fig. 1, this figure provides the overall appearance structural representation that is installed in the embodiment of non retern valve on the rock bit that the utility model proposes
.This non retern valve 1 comprises hollow valve core 11 and is installed in spring 12 and the valve body 13 in the hollow valve core 11 from bottom to up successively; Wherein, Be provided with the steam vent 14 that is connected with the cooling air passage 21 of rock bit 2 in the side of hollow valve core 11, the steam vent 14 on the hollow valve core 11 is to be made up of the through hole that is arranged on interval preset distance on its sidewall; Side at valve body 13 also is provided with steam vent 15, and the steam vent 15 on the valve body 13 is to be made up of the window that is arranged on its sidewall, and steam vent 15 is that window is provided with 3 at grade at interval equidistantly.Non retern valve 1 also comprises the valve gap 16 that is installed in valve body 13 tops and is installed in the spacing collar 17 on the valve gap 16.
Claims (5)
1. be installed in the non retern valve on the rock bit; It is characterized in that: this non retern valve comprises hollow valve core spring and the valve body interior with being installed in hollow valve core from bottom to up successively that is installed in the valve body top-portion apertures, and is provided with steam vent in the side of valve body and hollow valve core.
2. non retern valve according to claim 1 is characterized in that: the steam vent on the said hollow valve core is to be made up of the through hole that is arranged on interval preset distance on its sidewall.
3. non retern valve according to claim 1 is characterized in that: the steam vent on the said valve body is that window constitutes on its sidewall by being arranged on.
4. non retern valve according to claim 3 is characterized in that: said window is provided with 3 at grade at interval equidistantly.
5. non retern valve according to claim 1 is characterized in that: the top of said valve body also is equipped with valve gap and is installed in the spacing collar on the valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201005136U CN202500495U (en) | 2012-03-18 | 2012-03-18 | Check valve installed on roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201005136U CN202500495U (en) | 2012-03-18 | 2012-03-18 | Check valve installed on roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500495U true CN202500495U (en) | 2012-10-24 |
Family
ID=47037110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201005136U Expired - Fee Related CN202500495U (en) | 2012-03-18 | 2012-03-18 | Check valve installed on roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277043A (en) * | 2013-05-17 | 2013-09-04 | 宜昌市五环钻机具有限责任公司 | Efficient medium-low-pressure down-hole hammer |
-
2012
- 2012-03-18 CN CN2012201005136U patent/CN202500495U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277043A (en) * | 2013-05-17 | 2013-09-04 | 宜昌市五环钻机具有限责任公司 | Efficient medium-low-pressure down-hole hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20140318 |