CN204457606U - Arrow-shaped check valve - Google Patents
Arrow-shaped check valve Download PDFInfo
- Publication number
- CN204457606U CN204457606U CN201420803661.3U CN201420803661U CN204457606U CN 204457606 U CN204457606 U CN 204457606U CN 201420803661 U CN201420803661 U CN 201420803661U CN 204457606 U CN204457606 U CN 204457606U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- flechette
- shaped
- arrow
- 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
Landscapes
- Check Valves (AREA)
Abstract
A kind of arrow-shaped check valve, comprise valve body, flechette-type spool and valve seat, described flechette-type spool comprises the cone-shaped valve head being arranged on front end and the valve cylinder being arranged on rear end, the sidewall of described valve cylinder is provided with the opening with valve seat cavity UNICOM, the cone-shaped valve head top of described flechette-type spool is also provided with thimble, described valve seat is provided with the conical surface that coordinates with cone-shaped valve head and the axle sleeve for clamping thimble, described valve body comprises the top connection and lower contact that are set to Split type structure, on described, lower contact to be linked into an integrated entity structure by taper pipe thread, on described, lower structure is provided with fluid passage, described valve seat and flechette-type spool to be arranged in top connection and near the seal face of lower contact.The utility model by valve body is set to Split type structure, valve seat and flechette-type spool to be arranged in top connection simultaneously and make on the position of the seal face of lower contact valve seat of the present utility model and spool installing/dismounting all very convenient.
Description
Technical field
The utility model relates to a kind of valve, and concrete is a kind of arrow-shaped check valve.
Background technology
Arrow-shaped check valve is sword-like back-pressure valve again, is called for short arrow valve.It is one of jet-preventing tool in drilling tool conventional in oil, gas drilling, well workover.It enters well work with drilling tool, in drilling well or well workover process once there is overflow, well kick or direct circulation stop, in drilling tool reversing pressure and spring force effect under arrow-shaped check valve close rapidly, block drilling tool internal channel, play the object of blowout prevention in drilling tool.Existing arrow valve is a kind of arrow-shaped check valve disclosed in 201460812U, the lower seat that it comprises valve body, pressure cap, seal box, "O"-ring, sealing arrow and is located in valve body lower portion shoulder hole, it is located on lower seat by the sealing arrow for the conical surface outside middle part, bottom is inserted in lower seat, be that the seal box of the conical surface coordinates with the inwall in the middle part of valve body in bottom, between the inwall in the middle part of seal box and valve body, be provided with two "O"-rings; Pressure cap coordinates with the inner thread of valve body middle and upper part, the lower end of this pressure cap be close to the upper end of seal box; The top of sealing arrow is through pressure cap, and the conical surface outside in the middle part of it contacts with the conical surface in seal box bottom is corresponding.Therefore; sealing performance is better relative to other arrow valves; but its seal is more; and adopt monolithic construction; comparatively difficulty is installed when therefore valve body and sealing ring are installed; often occur that valve seat and sealing ring are installed not in place and affect sealing performance; even there is waste product; arrow valve in use in addition; often there will be valve seat and spool collision cause valve seat and spool wearing and tearing; therefore valve seat and spool are after operation a period of time, and also inevasible needs are with changing, and this just requires that arrow valve can be dismantled very easily.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of novel arrow-shaped check valve, ensure sealing performance prerequisite under, install, dismounting all convenient, quick.
For achieving the above object, the utility model provides following technical scheme:
A kind of arrow-shaped check valve, comprise valve body, flechette-type spool and valve seat, described flechette-type spool comprises the cone-shaped valve head being arranged on front end and the valve cylinder being arranged on rear end, the sidewall of described valve cylinder is provided with the opening with valve seat cavity UNICOM, the cone-shaped valve head top of described flechette-type spool is also provided with thimble, described valve seat is fixedly installed the conical surface that coordinates with cone-shaped valve head and the axle sleeve for clamping thimble, described valve body comprises the top connection and lower contact that are set to Split type structure, on described, lower contact to be linked into an integrated entity structure by taper pipe thread, on described, lower contact is provided with fluid passage, described valve seat and flechette-type spool to be arranged in top connection and near the seal face of lower contact.
Further, described top connection fluid passage is provided with fluid cushion chamber near the position of valve seat, and the sidewall opening on described flechette-type spool is arranged in this fluid cushion chamber.
Further, at least two ring O RunddichtringOs are provided with between described valve seat and top connection inwall.
Further, described lower contact is directly less than the external diameter of valve seat near its endoporus of end face of valve seat.
Further, described top connection housing being provided with at least two for what hold out against axle sleeve on valve seat holds out against screw.
Further, described valve seat and flechette-type spool nail pin are hard steel part, and described valve seat adopts copper or aluminum component for the axle sleeve clamping thimble, and the cone-shaped valve head of described flechette-type spool adopts vulcanie to make.
The beneficial effects of the utility model are: the utility model is by being set to Split type structure by valve body, valve seat and flechette-type spool to be arranged in top connection simultaneously and make on the position of the seal face of lower contact valve seat of the present utility model and spool installing/dismounting all very convenient, by taper pipe thread upper and lower joint sealing connected simultaneously and makes sealing of the present utility model still fine.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, a kind of arrow-shaped check valve, comprise valve body, flechette-type spool 1 and valve seat 2, described flechette-type spool comprises the cone-shaped valve head being arranged on front end and the valve cylinder being arranged on rear end, the sidewall of described valve cylinder is provided with the opening 8 with valve seat cavity UNICOM, the cone-shaped valve head top of described flechette-type spool is also provided with thimble 3, described valve seat is fixedly installed the conical surface that coordinates with cone-shaped valve head and the axle sleeve 4 for clamping thimble, described valve body comprises the top connection 5 and lower contact 6 that are set to Split type structure, on described, lower contact to be linked into an integrated entity structure by taper pipe thread, on described, lower contact is provided with fluid passage, described valve seat and flechette-type spool to be arranged in top connection and near the seal face of lower contact.
The arrow valve of the present embodiment is by being set to Split type structure by valve body, valve seat and flechette-type spool to be arranged in top connection simultaneously and make on the position of the seal face of lower contact valve seat of the present utility model and spool installing/dismounting all very convenient, by taper pipe thread upper and lower joint sealing connected simultaneously and makes sealing of the present utility model still fine.
In the present embodiment, described top connection fluid passage is provided with fluid cushion chamber 7 near the position of valve seat, and the sidewall opening on described flechette-type spool is arranged in this fluid cushion chamber.Arrange cushion chamber in the present embodiment to be convenient to fluid and to circulate in upper and lower joint.
In the present embodiment, between described valve seat and top connection inwall, be provided with at least two ring O RunddichtringOs.The sealing of upper lower contact intersection can be improved by adding the above sealing ring of two rings.
In the present embodiment, described lower contact is directly less than the external diameter of valve seat near its endoporus of end face of valve seat, and the structure of the present embodiment can prevent valve seat from being headed in the fluid passage of lower contact.
In the present embodiment, described top connection housing being provided with at least two for what hold out against axle sleeve on valve seat holds out against screw, the present embodiment hold out against screw for adjusting the frictional force between axle sleeve 4 and thimble 3, from but the utility model have adjustment closing presure function, even if still can use after making axle sleeve or thimble have certain little wearing and tearing simultaneously.
In the present embodiment, described valve seat and flechette-type spool nail pin are hard steel part, and described valve seat adopts copper or aluminum component for the axle sleeve clamping thimble, and the cone-shaped valve head of described flechette-type spool adopts vulcanie to make.The material of the present embodiment selects the wearing and tearing that can reduce spool and valve seat also can improve the closedown effect of the two simultaneously.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (6)
1. an arrow-shaped check valve, comprise valve body, flechette-type spool and valve seat, described flechette-type spool comprises the cone-shaped valve head being arranged on front end and the valve cylinder being arranged on rear end, the sidewall of described valve cylinder is provided with the opening with valve seat cavity UNICOM, the cone-shaped valve head top of described flechette-type spool is also provided with thimble, described valve seat is fixedly installed the conical surface that coordinates with cone-shaped valve head and the axle sleeve for clamping thimble, it is characterized in that: described valve body comprises the top connection and lower contact that are set to Split type structure, on described, lower contact to be linked into an integrated entity structure by taper pipe thread, on described, lower contact is provided with fluid passage, described valve seat and flechette-type spool to be arranged in top connection and near the seal face of lower contact.
2. arrow-shaped check valve according to claim 1, is characterized in that: described top connection fluid passage is provided with fluid cushion chamber near the position of valve seat, and the sidewall opening on described flechette-type spool is arranged in this fluid cushion chamber.
3. arrow-shaped check valve according to claim 1, is characterized in that: be provided with at least two ring O RunddichtringOs between described valve seat and top connection inwall.
4. arrow-shaped check valve according to claim 1, is characterized in that: described lower contact is directly less than the external diameter of valve seat near its endoporus of end face of valve seat.
5. arrow-shaped check valve according to claim 1, is characterized in that: described top connection housing is provided with at least two for what hold out against axle sleeve on valve seat and holds out against screw.
6. arrow-shaped check valve according to claim 1, it is characterized in that: described valve seat and flechette-type spool nail pin are hard steel part, described valve seat adopts copper or aluminum component for the axle sleeve clamping thimble, and the cone-shaped valve head of described flechette-type spool adopts vulcanie to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803661.3U CN204457606U (en) | 2014-12-18 | 2014-12-18 | Arrow-shaped check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803661.3U CN204457606U (en) | 2014-12-18 | 2014-12-18 | Arrow-shaped check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457606U true CN204457606U (en) | 2015-07-08 |
Family
ID=53664508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420803661.3U Expired - Fee Related CN204457606U (en) | 2014-12-18 | 2014-12-18 | Arrow-shaped check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798591A (en) * | 2018-06-12 | 2018-11-13 | 武汉理工大学 | A kind of arrow-shaped check valve |
-
2014
- 2014-12-18 CN CN201420803661.3U patent/CN204457606U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798591A (en) * | 2018-06-12 | 2018-11-13 | 武汉理工大学 | A kind of arrow-shaped check valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203926221U (en) | Cushion cylinder | |
| CN102444637A (en) | Plug-in overflow valve | |
| CN204457606U (en) | Arrow-shaped check valve | |
| CN102242812B (en) | Upper-mounting-type hydraulic ball valve | |
| CN204061976U (en) | Dress formula floating ball valve in one | |
| CN204025800U (en) | A kind of two damping One-stage Water Hydraulic Relief Valve | |
| CN105756619A (en) | Arrow-shaped check valve | |
| CN204477395U (en) | A kind of water hammer-resistant ceramic seal safety check | |
| CN204140531U (en) | Relief valve | |
| CN205275104U (en) | Hydraulic jack base convenient to maintenance | |
| CN209339919U (en) | A kind of level pressure water dispensing apparatus | |
| CN205422633U (en) | Cementing -head is instructed down to push -down indicating device and plug | |
| CN203756646U (en) | Oil cylinder buffer device | |
| CN105351552A (en) | Simple plunger valve | |
| CN105889529A (en) | Plunger type well drilling throttle valve | |
| CN202493684U (en) | Diaphragm type pressure reducing valve | |
| CN203716930U (en) | Plate type float valve | |
| CN206845149U (en) | A kind of stepping oil recovery valve body | |
| CN204127410U (en) | Ultra-high pressure safety valve | |
| CN203847040U (en) | Well head protective mechanism with sealing difficulty | |
| CN203940057U (en) | Ultrahigh pressure one-way valve | |
| CN204476455U (en) | Simple type pumping water into coal device | |
| CN204877365U (en) | Prefabricated formula blanking plug | |
| CN203257374U (en) | Leakproof structure of adjustable blanking plug in eccentric water distributor | |
| CN204226713U (en) | A kind of bottle throughway valve |
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: 20150708 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |