CN208546154U - A kind of drilling rod floating valve - Google Patents
A kind of drilling rod floating valve Download PDFInfo
- Publication number
- CN208546154U CN208546154U CN201821231892.6U CN201821231892U CN208546154U CN 208546154 U CN208546154 U CN 208546154U CN 201821231892 U CN201821231892 U CN 201821231892U CN 208546154 U CN208546154 U CN 208546154U
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- hole
- valve plate
- shell
- extension spring
- central
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Abstract
The utility model discloses a kind of drilling rod floating valve, including shell, shell has the first end for connecting top rod, and the second end for connecting lower part drilling rod, and shell is equipped with central through hole.The drilling rod floating valve further includes the valve body for blocking or opening the central through hole；Valve body includes spool, valve plate and extension spring, and spool is embedded at central through hole, and spool is equipped with the core bore for being connected to spool two sides central through hole；Valve plate is hinged close to the side of second end of the housing by pin shaft and spool, and extension spring is set to side of the valve plate close to second end of the housing；Extension spring one end and the hinged end of valve plate connect, and the other end is connect with shell, and extension spring has for pulling valve plate so that valve plate cover closes the pretightning force of core bore.The utility model utilizes lever principle, and using extension spring, convenient for control pretightning force, easy to assembly, extension spring itself will not generate frictional force, the hysteresis for avoiding valve plate from being opened and closed, to ensure that mud direct circulation is smooth.
Description
Technical field
The utility model relates to a kind of float valves, in particular to a kind of drilling rod floating valve.
Background technique
Drilling rod floating valve is generally connected on drill bit, as a kind of check valve, does not hinder the direct circulation of mud, but can hinder
Only well kick or blowout reduce the loss of mud and keep the cleaning of rig floor.Currently, float valve on the market is used and is installed on pin shaft
The mode of torsionspring realizes the opening and closing of valve plate, such drilling rod floating valve, and the resultant force that torsionspring acts on raft plate is not easily controlled,
Lead to assembly difficulty, in addition in the application, since gap is smaller between the every circle of torsionspring, when loading and unloading, torsionspring
Itself can generate frictional force, so that the opening and closing of valve plate be made hysteresis occur, cause to hinder to mud direct circulation.
Utility model content
The purpose of this utility model is to provide a kind of drilling rod floating valves, are convenient for using lever principle using extension spring
Pretightning force is controlled, easy to assembly, extension spring itself will not generate frictional force, the hysteresis for avoiding valve plate from being opened and closed, to protect
It is smooth to hinder mud direct circulation.
The embodiments of the present invention are achieved in that
A kind of drilling rod floating valve, including shell, shell have the first end for connecting top rod, and under connection
The second end of portion's drilling rod, shell are equipped with the central through hole through its first end and second end.The drilling rod floating valve further includes for hindering
Valve body that is disconnected or opening the central through hole；Valve body includes spool, valve plate and extension spring, and spool is embedded at central through hole, valve
Core is equipped with the core bore for being connected to spool two sides central through hole；Valve plate is cut with scissors by pin shaft and spool close to the side of second end of the housing
It connects, extension spring is set to side of the valve plate close to second end of the housing；Extension spring one end and the hinged end of valve plate connect, and stretch
The spring other end is connect with shell, and the tie point of extension spring and valve plate is located at side of the pin shaft far from core bore, extension spring tool
Have for pulling valve plate so that valve plate cover closes the pretightning force of core bore.
Further, spring anchor block is fixedly installed in central through hole, spring anchor block is located at valve plate close to shell
The side at two ends, extension spring are connect with spring anchor block, and spring anchor block is equipped with for being connected to spring anchor block two sides center
The fixed block through-hole of through-hole.
Further, O-ring seals are equipped between spool and shell.
Further, the first end of shell is equipped with the box thread for connecting top rod, and it is logical that box thread is set to center
The hole wall in hole, the second end of shell are equipped with the male thread for connecting lower part drilling rod, and male thread is set to the outer wall of shell.
Further, central through hole, core bore, the central axis of fixed block through-hole are conllinear.
The beneficial effect of the utility model embodiment is:
Extension spring one end and the hinged end of valve plate connect, and the other end is connect with valve body, form lever by fulcrum of pivot pin
Balance, valve plate is by applying initial pretightening force to extension spring, so that passing through without fluid or when fluid is static, keeps at valve body
In closed state.Compared to torsionspring, the pretightning force and the position of power, size of extension spring are all easy to calculate and control,
Manufacture and installation are more convenient, and effect is more preferable.When load and unloading, extension spring itself will not generate frictional force, and valve plate is avoided to open
The hysteresis closed, to ensure that mud direct circulation is smooth.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the cross-sectional view for the drilling rod floating valve that the utility model embodiment 1 provides.
Icon: 100- shell, 130- central through hole, 140-O shape sealing ring, 200- valve body, 210- spool, 211- core bore,
220- valve plate, 230- extension spring, 240- spring anchor block, 241- fixed block through-hole, 250- pin shaft.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
Term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
It is logical.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
Embodiment 1
Fig. 1 is please referred to, the present embodiment provides a kind of drilling rod floating valve, including shell 100, shell 100 has for connecting
The first end of portion's drilling rod, and the second end for connecting lower part drilling rod, shell 100 are equipped with through its first end and second end
Central through hole 130.The drilling rod floating valve further includes the valve body 200 for blocking or opening central through hole 130.Valve body 200 includes valve
Core 210, valve plate 220 and extension spring 230, spool 210 are embedded at central through hole 130, and spool 210 is equipped with for being connected to the valve
The core bore 211 of 210 two sides central through hole 130 of core is equipped with O-ring seals 140 between spool 210 and valve body 200.Valve plate 220 is logical
It is hinged close to the side of 100 second end of shell with spool 210 to cross pin shaft 250, extension spring 230 is set to valve plate 220 close to shell
The side of 100 second end of body.230 one end of extension spring is connect with the hinged end of valve plate 220,230 other end of extension spring and shell
Body 100 connects, and the extension spring 230 and the tie point of the valve plate 220 are located at the pin shaft 250 far from the core bore 211
Side, the extension spring 230 has for pulling the valve plate 220 so that the lid of the valve plate 220 closes the core bore 211
Pretightning force.
In the present embodiment, extension spring 230 and the specific connection type of valve body 200 are that fixation is set in central through hole 130
It is equipped with spring anchor block 240, spring anchor block 240 is located at valve plate 220 close to the side of 200 second end of valve body, extension spring
230 connect with spring anchor block 240, and spring anchor block 240 is equipped with for being connected to the 240 two sides central through hole of spring anchor block
130 fixed block through-hole 241.230 both ends of extension spring are equipped with hook part, are connected by hook part and valve plate 220 and spring anchor block 240
It connects, convenient for assembly.In other embodiments of the invention, spring can also directly be connect with shell 100, only be assembled more not
Just.
In the present embodiment, the specific connection type of shell 100 and drilling rod are as follows: the first end of shell 100 is equipped with for connecting
The box thread of top rod, box thread is set to the hole wall of central through hole 130, under the second end of shell 100 is equipped with for connecting
The male thread of portion's drilling rod, male thread are set to the outer wall of shell 100.In other embodiments of the invention, shell 100 and drilling rod
It can also use other connection types, such as shell 100 that other types of screw thread is set, or use the modes such as clamping, welding,
As long as can be realized the sealed connection of shell 100 Yu drilling rod.
In addition, central through hole 130, core bore 211, the central axis of fixed block through-hole 241 are conllinear, fluid flows unimpeded, structure
It is compact, assembling easy to produce.
The working principle of the utility model drilling rod floating valve are as follows: 230 one end of extension spring is connect with the hinged end of valve plate 220,
The other end is connect with shell 100, is that fulcrum forms lever balance with pin shaft 250, by applying initial preload to extension spring 230
Power keeps valve body 200 to be in close state so that passing through without fluid or when fluid is static.Compared to torsionspring, stretch
The pretightning force and the position of power, size of spring 230 are all easy to calculate and control, and manufacture and installation are more convenient, and effect is more preferable.Add
When carrying and unloading, extension spring 230 itself will not generate frictional force, the hysteresis for avoiding valve plate 220 from being opened and closed, to ensure mud
It is smooth to starch direct circulation.
Drilling tool float valve is switched by fluid traffic organising valve body 200, and fluid is pushed open through 100 box thread end of shell, spool 210
Valve plate 220 is flowed out through 100 male thread end of shell.When drilling tool float valve works, it has opening and closing two states.Opening state
When, fluid is that rotation center pushes valve plate 220 open with pin shaft 250, fluid channel is unimpeded, can be crept into, clearly as motive force
It washes, the drillng operations such as leak stopping.When closing, fluid cannot flow into 100 box thread end of shell by 100 male thread end of shell, at this time
Valve plate 220 and spool 210 in shell 100 are in close state.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of drilling rod floating valve, it is characterised in that:
Including shell, the shell has the first end for connecting top rod, and second for connecting lower part drilling rod
End, the shell are equipped with the central through hole through its first end and second end；
It further include the valve body for blocking or opening the central through hole；The valve body includes spool, valve plate and extension spring, institute
It states spool and is embedded at the central through hole, the spool is equipped with the core bore for being connected to spool two sides central through hole；It is described
Valve plate is hinged close to the side of the second end of the housing with the spool by pin shaft, and the extension spring is set to the valve plate
Close to the side of the second end of the housing；Described extension spring one end is connect with the hinged end of the valve plate, the extension spring
The other end is connect with the shell, and the tie point of the extension spring and the valve plate is located at the pin shaft far from the core bore
Side, the extension spring have for pulling the valve plate so that the valve plate cover closes the pretightning force of the core bore.
2. drilling rod floating valve as described in claim 1, it is characterised in that: be fixedly installed spring in the central through hole and fix
Block, the spring anchor block are located at the valve plate close to the side of the second end of the housing, the extension spring and the spring
Fixed block connection, the spring anchor block are equipped with the fixed block through-hole for being connected to spring anchor block two sides central through hole.
3. drilling rod floating valve as described in claim 1, it is characterised in that: be equipped with O shape between the spool and the shell and seal
Circle.
4. drilling rod floating valve as described in claim 1, it is characterised in that: the first end of the shell is equipped with bores for connecting top
The box thread of bar, the box thread is set to the hole wall of the central through hole, under the second end of the shell is equipped with for connecting
The male thread of portion's drilling rod, the male thread are set to the outer wall of the shell.
5. the drilling rod floating valve as described in any one of Claims 1-4, it is characterised in that: the central through hole, is consolidated core bore
The central axis for determining block through-hole is conllinear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231892.6U CN208546154U (en) | 2018-08-01 | 2018-08-01 | A kind of drilling rod floating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231892.6U CN208546154U (en) | 2018-08-01 | 2018-08-01 | A kind of drilling rod floating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208546154U true CN208546154U (en) | 2019-02-26 |
Family
ID=65425804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821231892.6U Active CN208546154U (en) | 2018-08-01 | 2018-08-01 | A kind of drilling rod floating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208546154U (en) |
-
2018
- 2018-08-01 CN CN201821231892.6U patent/CN208546154U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |