CN206845955U - A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism - Google Patents
A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism Download PDFInfo
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- CN206845955U CN206845955U CN201720474937.1U CN201720474937U CN206845955U CN 206845955 U CN206845955 U CN 206845955U CN 201720474937 U CN201720474937 U CN 201720474937U CN 206845955 U CN206845955 U CN 206845955U
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- valve
- nut
- stem
- handwheel
- stop nut
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Abstract
The utility model proposes a kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism, including valve rod, valve stem nut, rotate handwheel, stop nut and steady pin, the valve stem nut is fixed on the stem exterior, the rotation handwheel is placed on outside the valve stem nut, the stop nut is installed on the valve rod, and is located at the valve stem nut top；The stop nut is fixed on the valve rod by the steady pin, abrasion distance is provided between the stop nut and the valve stem nut, the service life limit that mechanism can wear according to abrasion stroke come control valve flashboard, the damage because of caused by the friction between two sealing surfaces that flashboard is in contact with valve seat during long-term open and close can be found in time, avoid damage to be continuing with the harm brought under serious situation.
Description
Technical field
It the utility model is related to gate valve field, more particularly to Outside screw stem rising through handwheel type gate valve position-limit mechanism.
Background technology
Gate valve is the most frequently used to block class valve in industrial pipeline.Such valve has that flow resistance is small, with medium model
Enclose extensively, the advantages that relatively labor-saving is opened and closed compared to stop valve, the bodily form is fairly simple, and casting manufacturability is preferable, thus obtains widely should
With.But conventional gate valve is difficult to judge sealing surface wear situation after a long time use, cause stuck, shadow because closing tension sometimes
Ring the service life of seal.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism, including valve rod, valve rod
Nut, rotation handwheel, stop nut and steady pin, the valve stem nut are fixed on the stem exterior, the rotation handwheel sleeve
Outside the valve stem nut, the stop nut is installed on the valve rod, and is located at the valve stem nut top；It is described solid
The stop nut is fixed on the valve rod by rationed marketing, between the stop nut and the valve stem nut be provided with abrasion away from
From.
Preferably, the steady pin passes through the valve rod and the stop nut.
The utility model proposes Outside screw stem rising through handwheel type gate valve position-limit mechanism have following beneficial effect：Mechanism can be according to abrasion stroke
Carry out the service life limit of control valve flashboard abrasion, can find that flashboard is in contact with valve seat during because of long-term keying in time two
Damage, avoids damage to be continuing with the harm brought under serious situation caused by friction between sealing surface.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described.
Fig. 1 is structural representation of the present utility model；
Wherein, 1- valve rods, 2- stop nuts, 3- steady pins, 4- valve stem nuts, 5- abrasion distances, 6- rotate handwheel.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.
As shown in figure 1, the utility model proposes a kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism, including valve rod 1, valve stem nut 4, turn
Start wheel 6, stop nut 2 and steady pin 3, the valve stem nut 4 is fixed on outside the valve rod 1, and the rotation handwheel 6 is placed on
Outside the valve stem nut 4, the stop nut 2 is installed on the valve rod 1, and is located at the top of valve stem nut 4；It is described
The stop nut 2 is fixed on the valve rod 1 by steady pin 3, is provided between the stop nut 2 and the valve stem nut 4
Distance 5 is worn, working method of the present utility model is：Control valve makes the valve rod 1 of valve in the closed position, further according to design
Abrasion stroke coordinate regulation finally to couple valve rod with steady pin 3 to the abrasion distance 5 of design stop nut 2 and valve rod 1
1 and stop nut 2, stop nut 2 and valve rod 1 are fixed by steady pin 3.Due to long-term use of He of sealing part abrasion valve rod 1
Stop nut 2 can be fallen down together can not be further continued for down until the bottom surface of stop nut 2 contacts with valve stem nut 4, now valve
Door reach lifetime limitation, the service life limit that this structure can wear according to stroke is worn come control valve flashboard, can be with
The damage because of caused by the friction between two sealing surfaces that flashboard is in contact with valve seat during long-term open and close is found in time, is avoided damage to
The harm brought is continuing with serious situation.
It is safer in valve use using this structure, it is effectively prevented from what is brought by the excessive wear of seal
Harm.Also avoid normally-open stuck phenomenon can not occur because gate valve closing tension turns off part simultaneously, be effectively protected sealing
Face, extend valve service life.
Preferably, the steady pin 3 passes through the valve rod 1 and the stop nut 2.
A variety of modifications to embodiment will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (2)
1. a kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism, it is characterised in that including valve rod, valve stem nut, rotation handwheel, stop nut and consolidate
Rationed marketing, the valve stem nut are fixed on the stem exterior, and the rotation handwheel is placed on outside the valve stem nut, described spacing
Nut is installed on the valve rod, and is located at the valve stem nut top；The stop nut is fixed on institute by the steady pin
State on valve rod, abrasion distance is provided between the stop nut and the valve stem nut.
2. Outside screw stem rising through handwheel type gate valve position-limit mechanism according to claim 1, it is characterised in that the steady pin through the valve rod and
The stop nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720474937.1U CN206845955U (en) | 2017-05-02 | 2017-05-02 | A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720474937.1U CN206845955U (en) | 2017-05-02 | 2017-05-02 | A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845955U true CN206845955U (en) | 2018-01-05 |
Family
ID=60794607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720474937.1U Active CN206845955U (en) | 2017-05-02 | 2017-05-02 | A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985691A (en) * | 2019-12-09 | 2020-04-10 | 河南陶恩机械有限公司 | Wear stroke limiting gate valve |
-
2017
- 2017-05-02 CN CN201720474937.1U patent/CN206845955U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985691A (en) * | 2019-12-09 | 2020-04-10 | 河南陶恩机械有限公司 | Wear stroke limiting gate valve |
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