CN203703161U - Laborsaving butterfly valve - Google Patents
Laborsaving butterfly valve Download PDFInfo
- Publication number
- CN203703161U CN203703161U CN201320892016.9U CN201320892016U CN203703161U CN 203703161 U CN203703161 U CN 203703161U CN 201320892016 U CN201320892016 U CN 201320892016U CN 203703161 U CN203703161 U CN 203703161U
- Authority
- CN
- China
- Prior art keywords
- nut
- valve rod
- valve
- flap
- end surface
- 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 laborsaving butterfly valve, which comprises a valve clack and a valve stem; a nut is fixed on the right side of the valve clack with the axial lead in vertical direction; the valve stem and the nut are in bolt joint cooperation; a staircase is set on the valve stem at the lower part of the nut; at the same time, a sealing seat is set on the right side of the valve clack; a connection aperture is set on the seal seat under the nut with the axial lead vertical; the upper portion of the connection aperture is open, and the lower end is provided with a fluid inlet port whose diameter is smaller than the diameter of the connection aperture; the valve clack is provided with a pressure release aperture; the pressure release aperture is communicated with the sidewall of the connection aperture; the lower transverse plane of the valve stem is associated with the fluid inlet port; and, the upper transverse plane of the upper staircase is associated with the lower transverse plane of the nut. The utility model has the advantage that the moment required for opening is small.
Description
Technical field
The present invention relates to valve technology field, especially relate to a kind of laborsaving butterfly valve.
Background technique
Butterfly valve comprises valve body, valve seat, valve rod, flap, is one of the most common valve.But along with the progressively increase of butterfly valve specification, thereby required moment progressively becomes large when this valve rod drives this flap rotation that this butterfly valve is opened.Although, can be by being adopted as mode that this butterfly valve is equipped with final controlling element to reach the object of convenient this valve rod of twisting, such way has not only increased equipment cost, and valve rod very easily turn round bad, thereby shortened working life of this butterfly valve.
Summary of the invention
The object of this invention is to provide a kind of laborsaving butterfly valve, it has the less feature of moment required while unlatching.
The technical solution adopted in the present invention is: laborsaving butterfly valve, comprise flap and valve rod, on the right flank of described flap, be fixed with the nut that shaft axis is vertical trend, this valve rod and this nut threaded, and the bottom that is positioned at this nut on this valve rod is provided with tops bar, simultaneously, the right flank of this flap is provided with sealing seat, sealing seat have shaft axis be vertically and be positioned at this nut under attachment hole, the upper opening of this attachment hole, lower end is provided with the inlet opening that diameter is less than the diameter of this attachment hole, and have relief hole on this flap, this relief hole is communicated to the sidewall of this attachment hole, and, the lower end surface of this valve rod and this inlet opening match, the lower end surface of this upper-end surface of topping bar and this nut matches.
On described valve rod, be positioned at this downside of topping bar and be provided with and get out of a predicament or an embarrassing situation, this is got out of a predicament or an embarrassing situation and the upper-end surface of sealing seat matches.
The advantage that the present invention has is: moment required when unlatching is less.Laborsaving butterfly valve of the present invention is in the time of open operation, after this valve rod rotation, rise, first this inlet opening has been opened and realized the perforation of this inlet opening and this relief hole, thereby the pressure difference of these flap both sides reduces, and then be convenient to twist this flap by this valve rod, and do not need great moment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is that the laborsaving butterfly valve of the embodiments of the invention master in off position time looks sectional view;
Fig. 2 is that the laborsaving butterfly valve of the embodiments of the invention master in opening process looks sectional view.
In figure: 10, flap, 11, relief hole; 20, valve rod, 21, top bar, 22, get out of a predicament or an embarrassing situation; 30, nut; 40, sealing seat, 41, attachment hole, 42, inlet opening.
Embodiment
Embodiment, is shown in shown in Fig. 1 and Fig. 2: laborsaving butterfly valve, comprises flap 10 and valve rod 20.On the right flank of this flap 10, be fixed with the nut 30 that shaft axis is vertical trend, this valve rod 20 and these nut 30 threaded, and the bottom that is positioned at this nut 30 on this valve rod 20 is provided with and tops bar 21.Meanwhile, the right flank of this flap 10 is provided with sealing seat 40.Sealing seat 40 have shaft axis be vertically and be positioned at this nut 30 under attachment hole 41.The upper opening of this attachment hole 41, lower end are provided with the inlet opening 42 that diameter is less than the diameter of this attachment hole 41., this valve rod 20 move down after the lower end of this valve rod 20 can enter in this attachment hole 41.And, on this flap 10, having relief hole 11, this relief hole 11 is communicated to the sidewall of this attachment hole 41.And the lower end surface of this valve rod 20 and this inlet opening 42 match, this tops bar 21 upper-end surface and the lower end surface of this nut 30 matches.That is, after 20 rotations of this valve rod, under the effect of this nut 30, can move up and down, thus the lower end surface of this valve rod 20 can open or close this inlet opening 42, this top bar 21 upper-end surface can with the lower end surface close contact of this nut 30.Further say, on this valve rod 20, be positioned at this downside of 21 of topping bar and be provided with and get out of a predicament or an embarrassing situation 22, this get out of a predicament or an embarrassing situation 22 and the upper-end surface of sealing seat 40 match., this get out of a predicament or an embarrassing situation 22 lower end surface can with the upper-end surface close contact of sealing seat 40.
Course of action of the present invention and working principle: the lower end surface that original state is this valve rod is by this inlet opening sealing.When rotating this valve rod and open this butterfly valve, this valve rod moves up, thereby this inlet opening and this relief hole connect, and reduce thereby the pressure medium of these flap both sides is poor, are then convenient to the rotation of this flap.Now, this valve rod can not be subject to any restriction, thereby this valve rod continues to move up, this flap can not be rotated along with this valve rod.Then, this valve rod continues to move up, until this top bar and this nut close contact after, this valve rod is restricted, thus this flap must, along with the rotation of this valve rod, open this butterfly valve after this flap rotation then.Otherwise, in the time that needs are closed this butterfly valve, this valve rod of counterrotating.First this valve rod moves down and this flap can not rotate.Until this is got out of a predicament or an embarrassing situation together with the lower end surface of sealing seat close contact or this valve rod and the bottom of this attachment hole withstand on closely, the rotation of this valve rod is restricted, and this flap must be along with this valve rod rotation then, and this butterfly valve cuts out the most at last.
In sum, in the process of this butterfly valve of unlatching, this relief hole in advance pressure release reduces the pressure difference of these flap both sides, thereby is convenient to rotate this flap.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. laborsaving butterfly valve, comprise flap (10) and valve rod (20), it is characterized in that: on the right flank of described flap (10), be fixed with the nut (30) that shaft axis is vertical trend, this valve rod (20) and this nut (30) threaded, and the bottom that is positioned at this nut (30) on this valve rod (20) is provided with top bar (21), simultaneously, the right flank of this flap (10) is provided with sealing seat (40), sealing seat (40) have shaft axis be vertically and be positioned at this nut (30) under attachment hole (41), the upper opening of this attachment hole (41), lower end is provided with the inlet opening (42) that diameter is less than the diameter of this attachment hole (41), and on this flap (10), have relief hole (11), this relief hole (11) is communicated to the sidewall of this attachment hole (41), and, the lower end surface of this valve rod (20) and this inlet opening (42) match, the lower end surface of the upper-end surface of these top bar (21) and this nut (30) matches.
2. laborsaving butterfly valve according to claim 1, is characterized in that: on described valve rod (20), be positioned at this downside of topping bar (21) and be provided with get out of a predicament or an embarrassing situation (22), this is got out of a predicament or an embarrassing situation (22) and the upper-end surface of sealing seat (40) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892016.9U CN203703161U (en) | 2013-12-30 | 2013-12-30 | Laborsaving butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892016.9U CN203703161U (en) | 2013-12-30 | 2013-12-30 | Laborsaving butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703161U true CN203703161U (en) | 2014-07-09 |
Family
ID=51053606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892016.9U Expired - Fee Related CN203703161U (en) | 2013-12-30 | 2013-12-30 | Laborsaving butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703161U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274035A (en) * | 2019-07-10 | 2019-09-24 | 天虹阀门科技（泉州）有限公司 | Bidirectional bearing double eccentric butterfly valve |
-
2013
- 2013-12-30 CN CN201320892016.9U patent/CN203703161U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274035A (en) * | 2019-07-10 | 2019-09-24 | 天虹阀门科技（泉州）有限公司 | Bidirectional bearing double eccentric butterfly valve |
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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: 20140709 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |