CN206513887U - A kind of lift check valve - Google Patents
A kind of lift check valve Download PDFInfo
- Publication number
- CN206513887U CN206513887U CN201720218498.8U CN201720218498U CN206513887U CN 206513887 U CN206513887 U CN 206513887U CN 201720218498 U CN201720218498 U CN 201720218498U CN 206513887 U CN206513887 U CN 206513887U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- valve body
- stem sleeve
- lift check
- 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
Abstract
The utility model discloses a kind of lift check valve.The technical solution of the utility model is：A kind of lift check valve, including valve body and bonnet, connected between the valve body and bonnet by screw bolt and nut, intake channel and exit passageway are provided with the valve body, the valve body is provided with valve seat in the side of intake channel, the passage connected with the intake channel is provided with the valve seat, the flap cooperated with the valve seat is provided with the valve body, the upper end of the flap is connected with valve rod, valve stem sleeve is provided with the inside of the bonnet, chute is provided with the valve stem sleeve, the upper end of the valve rod, which is slided, to be set in chute, two balls are embedded with the lower end inner wall of the valve stem sleeve, locating slot corresponding with the ball is provided with the valve rod.What the utility model was provided can avoid flap from occurring double swerve and rotation, extend the service life of lift check valve.
Description
Technical field
The utility model is related to valve technology field, more particularly to a kind of lift check valve.
Background technology
Check-valves refers to flow in itself by medium and automatic open and close flap, for preventing the valve of medium refluence, also known as
Non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, and its main function is to prevent medium from falling
Flow, prevent pump and drive motor from inverting, and vessel media is released.Lift check valve refers to that flap is vertical along valve body
The check-valves that center line is slided, lift check valve can be only installed on horizontal pipe, in high-pressure small-bore check-valves upper flap
Ball can be used.The valve body shapes of lift check valve are as stop valve（Can be general with stop valve）, therefore its fluid resistance
Force coefficient is larger.Its structure is similar to stop valve, and valve body and flap are identical with stop valve.Flap top and bonnet lower are machined with
Guide sleeve letter, flap is oriented to letter and can be freely lifted in valve small cup guiding letter, and when medium following current, flap is opened by medium thrust,
When medium arrheas, flap is leaned on to be dropped on valve seat from hanging down, and plays prevention medium counter flow.
The problem of lift check valve of prior art is present is that the flow media in valve body is in an unsure state, meeting
Cause that double swerve occurs in lifting process for flap and situation about rotating occurs, so will result in the fast of valve rod and flap
Speed abrasion, reduces the service life of lift check valve.
Utility model content
In view of the deficienciess of the prior art, main purpose of the present utility model is that providing one kind avoids flap from occurring a left side
The lift check valve that the right side is rocked and rotated.
To achieve the above object, the utility model provides following technical scheme：A kind of lifting/lowering type check-valves, including
Valve body and bonnet, are connected between the valve body and bonnet by screw bolt and nut, and intake channel is provided with the valve body and is gone out
Mouth passage, the valve body is provided with to be provided with valve seat, the valve seat in the side of intake channel and connected with the intake channel
Passage, the flap cooperated with the valve seat is provided with the valve body, the upper end of the flap is connected with valve rod, described
It is provided with the inside of bonnet on valve stem sleeve, the valve stem sleeve and is provided with chute, the upper end of the valve rod, which is slided, is set in chute, described
It is embedded with the lower end inner wall of valve stem sleeve on two balls, the valve rod and is provided with locating slot corresponding with the ball.
It is preferred that, it is provided with spring at the top of the valve stem sleeve.
It is preferred that, the sealing shroud above two balls is provided with the inwall of the valve stem sleeve.
The utility model has the following advantages that a kind of lift check valve of the present utility model passes through relative to prior art
It is embedded with the lower end inner wall of valve stem sleeve on two balls, and valve rod and is provided with locating slot corresponding with the ball,
During valve rod raising and lowering, ball all the time in locating slot, the benefit so set be can prevent valve rod rotate and
Double swerve, locating slot realizes spacing effect with ball engagement.This makes it possible to the quick mill for avoiding valve rod and flap
Damage, extend the service life of lift check valve.And the rolling friction between ball and locating slot, instead of valve rod and valve rod
Sliding friction between set, frictional force is reduced, and is enabled to valve rod rapider during raising and lowering, is accelerated lifting
The response speed of check-valves.
Brief description of the drawings
Fig. 1 is a kind of structural representation of lift check valve of the present utility model；
Fig. 2 is A portions enlarged diagram in Fig. 1.
In figure：1st, valve body；2nd, bonnet；3rd, flap；4th, valve rod；5th, valve stem sleeve；6th, chute；7th, ball；8th, locating slot；9th, bullet
Spring；10th, sealing shroud.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of lift check valve, including valve body 1 and bonnet 2, pass through spiral shell between the valve body 1 and bonnet 2
Screw bolt and nut is connected, and is provided with intake channel and exit passageway in the valve body 1, the valve body 1 is set in the side of intake channel
It is equipped with valve seat, the valve seat and is provided with the passage connected with the intake channel, is provided with the valve body 1 and the valve seat
The flap 3 of mutual cooperation, the upper end of the flap 3 is connected with valve rod 4, and the inner side of bonnet 2 is provided with valve stem sleeve 5, the valve
Chute 6 is provided with rod set 5, the upper end of the valve rod 4, which is slided, to be set in chute 6, is embedded on the lower end inner wall of the valve stem sleeve 5
Have and locating slot 8 corresponding with the ball 7 is provided with two balls 7, the valve rod 4.
A kind of lift check valve of the present utility model, by being embedded with two balls 7 on the lower end inner wall of valve stem sleeve 5,
And locating slot 8 corresponding with the ball 7 is provided with valve rod 4, during the raising and lowering of valve rod 4, ball 7 is all the time
In locating slot 8, the benefit so set is can to prevent valve rod 4 from rotating and double swerve, and locating slot 8 coordinates reality with ball 7
Spacing effect is showed.This makes it possible to the Fast Wearing for avoiding valve rod 4 and flap 3, the use of lift check valve is extended
Life-span.And the rolling friction between ball 7 and locating slot 8, instead of the sliding friction between valve rod 4 and valve stem sleeve 5, friction
Power is reduced, and is enabled to valve rod 4 rapider during raising and lowering, is accelerated the response speed of lift check valve.
It is preferred that, the top of the valve stem sleeve 5 is provided with spring 9.The effect of spring 9 is that elevated valve rod 4 can be produced
Raw oppressive force, promotes valve rod 4 being capable of rapid decrease falling, the response speed of raising lift check valve.
It is preferred that, the sealing shroud 10 positioned at the top of two ball 7 is provided with the inwall of the valve stem sleeve 5.Sealing shroud 10
Effect is to protect the spring 9 in chute 6 will not be by dielectric corrosion.It should be noted that when valve rod 4 rises to extreme higher position, positioning
The height of groove 8 is all the time below the top of sealing shroud 10, it is ensured that the sealing function of sealing shroud 10.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (3)
1. a kind of lift check valve, including valve body and bonnet, are connected between the valve body and bonnet by screw bolt and nut, described
Intake channel and exit passageway are provided with valve body, the valve body is provided with the side of intake channel in valve seat, the valve seat
The flap for being provided with and being cooperated with the valve seat in the passage connected with the intake channel, the valve body is provided with, it is described
The upper end of flap, which is connected with to be provided with valve stem sleeve, the valve stem sleeve on the inside of valve rod, the bonnet, is provided with chute, the valve rod
Upper end slide set chute in, it is characterised in that：Two balls, the valve rod are embedded with the lower end inner wall of the valve stem sleeve
On be provided with locating slot corresponding with the ball.
2. a kind of lift check valve according to claim 1, it is characterised in that：Bullet is provided with the top of the valve stem sleeve
Spring.
3. a kind of lift check valve according to claim 1, it is characterised in that：Position is provided with the inwall of the valve stem sleeve
Sealing shroud above two balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218498.8U CN206513887U (en) | 2017-03-07 | 2017-03-07 | A kind of lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218498.8U CN206513887U (en) | 2017-03-07 | 2017-03-07 | A kind of lift check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513887U true CN206513887U (en) | 2017-09-22 |
Family
ID=59869757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720218498.8U Expired - Fee Related CN206513887U (en) | 2017-03-07 | 2017-03-07 | A kind of lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206513887U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061170A (en) * | 2018-01-15 | 2018-05-22 | 沪航科技集团有限公司 | The anti-tampering gate valve of telescopic band |
| CN108061170B (en) * | 2018-01-15 | 2024-05-14 | 沪航科技集团有限公司 | Expansion band anti-interference gate valve |
-
2017
- 2017-03-07 CN CN201720218498.8U patent/CN206513887U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061170A (en) * | 2018-01-15 | 2018-05-22 | 沪航科技集团有限公司 | The anti-tampering gate valve of telescopic band |
| CN108061170B (en) * | 2018-01-15 | 2024-05-14 | 沪航科技集团有限公司 | Expansion band anti-interference gate valve |
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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: 20170922 Termination date: 20180307 |