CN104373610A - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN104373610A CN104373610A CN201410606120.6A CN201410606120A CN104373610A CN 104373610 A CN104373610 A CN 104373610A CN 201410606120 A CN201410606120 A CN 201410606120A CN 104373610 A CN104373610 A CN 104373610A
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- China
- Prior art keywords
- swivel nut
- transmission swivel
- valve
- valve gap
- spacing
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
Abstract
The invention provides a stop valve. The stop valve comprises a valve rod, a transmission threaded jacket arranged on the valve rod in a sleeving mode, and a valve cover arranged on the transmission threaded jacket in a sleeving mode. An internal thread is arranged on the inner wall of the transmission threaded jacket, and the valve rod is provided with a threaded section matched with the internal threaded of the transmission threaded jacket. The outer wall of the transmission threaded jacket is in interference fit or threaded fit with the valve cover. The valve cover is connected with the transmission threaded jacket in the circumferential direction of the transmission threaded jacket in a welding mode, and a welding line between the valve cover and the transmission threaded jacket penetrates through the whole circumferential direction of the transmission threaded jacket. According to the stop valve, due to the fact that the valve cover and the transmission threaded jacket are connected in the circumferential direction in the welding mode, rotating preventing limiting is achieved on the transmission threaded jacket, the valve cover and the transmission threaded jacket are in surface contact, the contact area is large, the connecting strength is high, cracks, scratches and slag dropping due to local stress of the transmission threaded jacket can be eradicated, the working stability of the transmission threaded jacket is improved, the service life of the transmission threaded jacket is prolonged, and it can be guaranteed that the valve can be used normally and safely.
Description
Technical field
The present invention relates to valve technology field, more particularly, relate to a kind of stop valve.
Background technique
Stop valve is one of most popular a kind of valve in daily life and industrial system.Connected by transmission swivel nut between the valve rod of stop valve and valve gap; At present, transmission swivel nut is mainly put in the bottom mounting apertures of valve gap by the method for cold cover or hot jacket, interference fit is formed between transmission swivel nut and valve gap during normal temperature to be restored, then two Cock screw symmetries are screwed in the junction of the edges of two sheets of paper place, bottom of transmission swivel nut and valve gap, transmission swivel nut cannot be rotated and come off; Finally will be placed on transmission swivel nut in valve rod.
Above-mentioned stop valve is in the process of work, rotary valve rod can make valve rod move up and down along the trapezoidal thread of transmission swivel nut, when valve rod rotates the position to valve closing, valve rod is subject to medium power upwards, this power is applied on transmission swivel nut by trapezoidal thread, thus make transmission swivel nut be subject to valve rod power upwards and radial force, now rotated by the spacing transmission swivel nut that can prevent of the radial direction of two Cock screws, moved up by the spacing transmission swivel nut that can prevent of valve upper part of the cover, ensured that valve can reach balance in off position like this; When valve rod rotates the position to valve opening, flap is subject to downward medium power, be with ovable valve stem by downward power, same purpose makes transmission swivel nut by downward power and radial force on transmission swivel nut simultaneously, at this moment only moves downward by two Cock screw restriction transmission swivel nuts and rotates.
That is, when valve is in closed condition, Cock screw needs to overcome the radial force be subject to and rotates to stop transmission swivel nut; When valve is in opening state, Cock screw needs to overcome to be subject to downward power and to move downward to stop transmission swivel nut, also will overcome radial force simultaneously and rotate to stop transmission swivel nut.
So, close and open in these two processes frequently at valve, transmission swivel nut alternately can be subject to power up and down and with corresponding radial force, whole process all only has two Cock screws to carry out spacing; After long closedown and breakdown action, Cock screw can be caused to occur distortion, fatigue damage or directly come off, transmission swivel nut occurs that crackle, material scratch, fall the phenomenons such as slag, transmission swivel nut is caused to follow valve rod rotate together or deviate from valve gap, valve cannot realize the function of closing and opening, thus cause the working stability of transmission swivel nut poor, have impact on the working life of transmission swivel nut, and then cause the working life of stop valve shorter.But also cause valve to there is larger potential safety hazard, have a strong impact on the normal of valve and safe handling.
In sum, how improving the working stability of transmission swivel nut, to increase the working life of transmission swivel nut, thus ensure the normal of valve and safe handling, is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of stop valve, to improve the working stability of transmission swivel nut, increase the working life of transmission swivel nut, thus ensure the normal of valve and safe handling.
In order to achieve the above object, the invention provides following technological scheme:
A kind of stop valve, comprise valve rod, be coated at the transmission swivel nut of described valve rod and be coated at the valve gap of described transmission swivel nut, the inwall of described transmission swivel nut is provided with internal thread, and described valve rod has the thread section with the screw-internal thread fit of described transmission swivel nut; Interference fit or screw-thread fit between the outer wall of described transmission swivel nut and described valve gap, and described valve gap is weldingly connected along the circumference of described transmission swivel nut and described transmission swivel nut, the weld seam between described valve gap and described transmission swivel nut runs through the whole circumference of described transmission swivel nut.
Preferably, in above-mentioned stop valve, screw-thread fit between the outer wall of described transmission swivel nut and described valve gap, and the inwall of described valve gap has the first spacing preiection limiting described transmission swivel nut and move axially to side;
Described stop valve also comprises the spacing steel part that the described transmission swivel nut of restriction moves axially to opposite side, described spacing steel part is resisted against the end of described transmission swivel nut away from described first spacing preiection, and described transmission swivel nut is welded with described valve gap by described spacing steel part;
Wherein, the outer wall of described spacing steel part welds with the circumference of described valve gap, described valve rod rotatably in be placed on the mounting hole of described bounding means.
Preferably, in above-mentioned stop valve, described first spacing preiection is arranged on described valve gap near one end of the flap of described stop valve and offsets near the end of described flap with described transmission swivel nut, and described spacing steel part and described transmission swivel nut offset away from the end of described flap.
Preferably, in above-mentioned stop valve, described spacing steel part is seamless steel pipe, and described seamless steel pipe is welded with described valve gap by adapter steel bushing, and the outer wall of described transmission swivel nut is by described adapter steel bushing and described valve gap screw-thread fit; Wherein:
Described adapter steel bushing is coated at described seamless steel pipe away from one end of described flap, described adapter steel bushing is coated at described transmission swivel nut near one end of described flap, and the two ends of described adapter steel bushing are welded with the circumference of described valve gap and the circumference of described seamless steel pipe respectively;
The inwall of described adapter steel bushing is provided with internal thread, the outer wall of described transmission swivel nut is provided with the outside thread with the screw-internal thread fit of described adapter steel bushing.
Preferably, in above-mentioned stop valve, the outer wall of described seamless steel pipe is also provided with the outside thread with the screw-internal thread fit of described adapter steel bushing, and the inwall of described adapter steel bushing being also provided with the second spacing preiection moved axially for limiting described transmission swivel nut, the confined planes of described second spacing preiection is mutually concordant with the confined planes of described seamless steel pipe.
Preferably, in above-mentioned stop valve, described valve gap is away from the annular spacing groove end face of described flap also offered for spacing described adapter steel bushing.
Preferably, in above-mentioned stop valve, described first spacing preiection is arranged on described valve gap away from one end of the flap of described stop valve and offsets with the end of described transmission swivel nut away from described flap;
Described spacing steel part is the spacing steel bushing offseted near the end of described flap with described transmission swivel nut, and described spacing steel bushing welds with the circumference of described valve gap; Wherein:
The inwall of described valve gap is provided with internal thread, and the outer wall of described transmission swivel nut is provided with the outside thread with the screw-internal thread fit of described valve gap, the outer wall of described spacing steel bushing is provided with the outside thread with the screw-internal thread fit of described valve gap.
Preferably, in above-mentioned stop valve, described spacing steel bushing is mutually concordant near the end face of described flap with described valve gap near the end face of described flap.
Preferably, in above-mentioned stop valve, described valve gap is also provided with seamless steel pipe away from one end of described flap, described valve rod rotatably in be placed on described seamless steel pipe.
Preferably, in above-mentioned stop valve, screw-thread fit between described seamless steel pipe and described valve gap and both circumferences are welded and fixed.
As can be seen from above-mentioned technological scheme, stop valve provided by the invention comprises valve rod, transmission swivel nut, valve gap; Wherein, transmission swivel nut is coated at valve rod, and the inwall of transmission swivel nut is provided with internal thread, and valve rod has the thread section with the screw-internal thread fit of transmission swivel nut; Valve gap is coated at transmission swivel nut, interference fit or screw-thread fit between the outer wall of transmission swivel nut and valve gap, and valve gap is weldingly connected along the circumference of transmission swivel nut and transmission swivel nut, and the weld seam between valve gap and transmission swivel nut runs through the whole circumference of transmission swivel nut.
Above-mentioned stop valve is in the process of work, rotary valve rod can make valve rod move up and down along the internal thread of transmission swivel nut, when valve rod rotates the position to valve closing, valve rod is subject to medium power upwards, this power is by threaded function on transmission swivel nut, and now the weld seam of transmission swivel nut circumference can make transmission swivel nut move upward and to be rotated; When valve rod rotates to the position of valve opening, flap is subject to downward medium power, and the power acting on transmission swivel nut is also downward, and at this moment the weld seam of transmission swivel nut circumference can limit transmission swivel nut and moves downward and rotate.
In summary, the present invention is spacing by making circumference between valve gap and transmission swivel nut be welded and fixed the anti-rotation achieved transmission swivel nut, it is now face contact between valve gap and transmission swivel nut, area of contact is larger, join strength is better, can eliminate occur because of transmission swivel nut local pressure crackle, scuffing and slag-off phenomenon, improve the working stability of transmission swivel nut, add the working life of transmission swivel nut, thus the normal of valve and safe handling can be ensured.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of mode of execution of the stop valve that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the another kind of mode of execution of the stop valve that the embodiment of the present invention provides.
Embodiment
Embodiments provide a kind of stop valve, improve the working stability of transmission swivel nut 2, add the working life of transmission swivel nut 2, thus the normal of valve and safe handling can be ensured.
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 1-2, the stop valve that the embodiment of the present invention provides comprises valve rod, transmission swivel nut 2, valve gap 1; Wherein, transmission swivel nut 2 is coated at valve rod, and the inwall of transmission swivel nut 2 is provided with internal thread, and valve rod has the thread section with the screw-internal thread fit of transmission swivel nut 2; Valve gap 1 is coated at transmission swivel nut 2, interference fit or screw-thread fit between the outer wall of transmission swivel nut 2 and valve gap 1, and valve gap 1 is weldingly connected along the circumference of transmission swivel nut 2 and transmission swivel nut 2, the weld seam between valve gap 1 and transmission swivel nut 2 runs through the whole circumference of transmission swivel nut 2.
Above-mentioned stop valve is in the process of work, rotary valve rod can make valve rod move up and down along the internal thread of transmission swivel nut 2, when valve rod rotates the position to valve closing, valve rod is subject to medium power upwards, this power is by threaded function on transmission swivel nut 2, and now the weld seam of transmission swivel nut 2 circumference can make transmission swivel nut 2 move upward and to be rotated; When valve rod rotates to the position of valve opening, flap is subject to downward medium power, and the power acting on transmission swivel nut 2 is also downward, and at this moment the weld seam of transmission swivel nut 2 circumference can limit transmission swivel nut 2 and moves downward and rotate.
In summary, the present invention is spacing by making circumference between valve gap 1 and transmission swivel nut 2 be welded and fixed the anti-rotation achieved transmission swivel nut 2, it is now face contact between valve gap 1 and transmission swivel nut 2, area of contact is larger, join strength is better, can eliminate occur because of transmission swivel nut 2 local pressure crackle, scuffing and slag-off phenomenon, improve the working stability of transmission swivel nut 2, add the working life of transmission swivel nut 2, thus the normal of valve and safe handling can be ensured.
In a kind of specific embodiment of the present invention, screw-thread fit between the outer wall of transmission swivel nut 2 and valve gap 1, and the inwall of valve gap 1 has the first spacing preiection limiting transmission swivel nut 2 and move axially to side; Stop valve also comprises the spacing steel part that restriction transmission swivel nut 2 moves axially to opposite side, and this spacing steel part is resisted against the end of transmission swivel nut away from the first spacing preiection, and transmission swivel nut is welded with valve gap 1 by spacing steel part; Wherein, the outer wall of spacing steel part welds with the circumference of valve gap 1, valve rod rotatably in be placed on the mounting hole of bounding means.
The present embodiment coordinates by the first spacing preiection and spacing steel part the axial limiting realized transmission swivel nut 2, when transmission swivel nut 2 is subject to axial force up or down, the matching thread connection simultaneously of the first spacing preiection, spacing steel part can play good position-limiting action, prevents transmission swivel nut 2 upper and lower displacement; So, reduce the active force that girth seam needs to overcome, ensure that the join strength of transmission swivel nut and valve gap 1, stop valve is added more than 2 times on service life.In addition, valve gap 1 and transmission swivel nut 2 can be welded and fixed by one end that the present invention only needs welding transmissions swivel nut 2 to be connected with spacing steel part, decrease welding job amount, accelerate efficiency of assembling.
And, owing to adopting screw-thread fit between the outer wall of transmission swivel nut 2 and valve gap 1, so eliminate cold cover or hot jacket compound during assembling, reduce assembling difficulty, decrease installation time; Compared to interference fit, also greatly reduce the difficulty of processing to component.
In a kind of concrete mode of execution, the first spacing preiection is arranged on valve gap 1 near one end of the flap of stop valve and offsets with the end of transmission swivel nut 2 near flap, and spacing steel part and transmission swivel nut 2 offset away from the end of flap.
Spacing steel part is preferably seamless steel pipe 4, and the wall thickness of seamless steel pipe 4 is thinner, takies small volume, and lighter in weight, the load-bearing of valve rod can be reduced.Certainly, this spacing steel part can also be common steel tube or steel bushing.
As shown in Figure 1, adapter steel bushing 3 is coated at seamless steel pipe 4 away from one end (upper end namely in Fig. 1) of flap, adapter steel bushing 3 is coated at transmission swivel nut 2 near one end (lower end namely in Fig. 1) of flap, and the two ends of adapter steel bushing 3 are welded with the circumference of valve gap 1 and the circumference of seamless steel pipe 4 respectively; In the present embodiment, seamless steel pipe 4 is welded with valve gap 1 by adapter steel bushing 3, and now valve gap 1, adapter steel bushing 3 and seamless steel pipe 4 are steel part, be convenient to welding, and weld strength is better.When spacing steel part is the thicker steel pipe of diameter, spacing steel part also can directly and valve gap 1 be welded and fixed.
Further, the outer wall of transmission swivel nut 2, by adapter steel bushing 3 and valve gap 1 screw-thread fit, the inwall of now adapter steel bushing 3 is provided with internal thread, the outer wall of transmission swivel nut 2 is provided with the outside thread with the screw-internal thread fit of adapter steel bushing 3.The position that the present embodiment is only corresponding with adapter steel bushing 3 on transmission swivel nut 2 arranges internal thread, shortens the reach needing processing, alleviates workload.
In order to optimize technique scheme further, the outer wall of seamless steel pipe 4 is also provided with the outside thread with the screw-internal thread fit of adapter steel bushing 3, now adopt screw-thread fit between seamless steel pipe 4 and adapter steel bushing 3, the tentatively fixing adapter steel bushing 3 of seamless steel pipe 4 can be utilized before butt tube steel bushing 3 welds, ensure that the accuracy of adapter steel bushing 3 mounting point, be convenient to welding simultaneously.
As shown in Figure 1, the inwall of adapter steel bushing 3 is also provided with the second spacing preiection moved axially for limiting transmission swivel nut 2, the confined planes of this second spacing preiection is mutually concordant with the confined planes of seamless steel pipe 4.The present embodiment utilizes seamless steel pipe 4 and the second spacing preiection to carry out spacing to the right-hand member of transmission swivel nut 2 simultaneously, improves limit effect.
In order to be convenient to assemble preferred adapter steel bushing 3 further, valve gap 1 is away from the annular spacing groove end face of flap also offered for spacing adapter steel bushing 3, before welding first by spacing for adapter steel bushing 3 in above-mentioned annular spacing groove, improve the steadiness of adapter steel bushing 3, further simplify welding operation.
The stop valve of above-described embodiment is when valve closing, valve rod is by medium power upwards, by threaded function in transmission swivel nut 2 power upwards, now transmission swivel nut 2 upper end by the second spacing preiection of adapter steel bushing 3 and seamless steel pipe 4 spacing, circumference adds circumference welding restriction by being threaded, so transmission swivel nut 2 cannot move upward and be rotated.When valve opening, valve rod is by downward medium power, and the power acting on transmission swivel nut 2 is also downward, is undertaken spacing in transmission swivel nut 2 lower end by the first spacing preiection of valve gap 1, so transmission swivel nut 2 cannot move downward, and being threaded and welding of circumference limits it equally and is rotated.Said structure limits moving up and down and rotary motion of transmission swivel nut 2 completely in the working procedure of valve, makes transmission swivel nut 2 achieve transmission agency better.
In another embodiment of invention, the first spacing preiection is arranged on valve gap 1 away from one end of the flap of stop valve and offsets with the end of transmission swivel nut 2 away from flap; Spacing steel part is the spacing steel bushing 5 offseted near the end of flap with transmission swivel nut 2, and this spacing steel bushing 5 welds with the circumference of valve gap 1; The inwall of valve gap 1 is provided with internal thread, and the outer wall of transmission swivel nut 2 is provided with the outside thread with the screw-internal thread fit of valve gap 1, the outer wall of spacing steel bushing 5 is provided with the outside thread with the screw-internal thread fit of valve gap 1.As shown in Figure 2, the present embodiment coordinates by the first spacing preiection and spacing steel bushing 5 axial limiting realized transmission swivel nut 2, when transmission swivel nut 2 is subject to axial force up or down, the matching thread connection simultaneously of the first spacing preiection, spacing steel bushing 5 can play good position-limiting action, prevents transmission swivel nut 2 upper and lower displacement; Reduce the active force that girth seam needs to overcome, ensure that the join strength of transmission swivel nut and valve gap 1, thus improve the working life of transmission swivel nut 2.In addition, valve gap 1 and transmission swivel nut 2 can be welded and fixed by one end that the present invention only needs welding transmissions swivel nut 2 to be connected with spacing steel part, decrease welding job amount, accelerate efficiency of assembling.
During above-mentioned stop valve assembling, first transmission swivel nut 2 is threaded connection and screws in valve gap 1, be screwed into realize after offseting with the first spacing preiection spacing, then spacing steel bushing 5 is threaded connection and screws in valve gap 1, until fit tightly with the end face of transmission swivel nut 2, finally valve gap 1 is welded as shown in Figure 2 with spacing steel bushing 5.
In the present embodiment, be directly threaded connection between valve gap 1 and transmission swivel nut 2, eliminate cold cover or hot jacket compound during assembling, reduce assembling difficulty and decrease installation time; Compared to interference fit, also greatly reduce the difficulty of processing to component.
The stop valve of above-described embodiment is when valve closing, valve rod is by medium power upwards, by threaded function in transmission swivel nut 2 power upwards, now transmission swivel nut 2 upper end is spacing by the first spacing preiection of valve gap 1, circumference adds circumference welding restriction by being threaded, so transmission swivel nut 2 cannot move upward and be rotated.When valve opening, valve rod is by downward medium power, and the power acting on transmission swivel nut 2 is also downward, is undertaken spacing in transmission swivel nut 2 lower end by spacing steel bushing 5, so transmission swivel nut 2 cannot move downward, and being threaded and welding of circumference limits it equally and is rotated.Said structure limits moving up and down and rotary motion of transmission swivel nut 2 completely in the working procedure of valve, makes transmission swivel nut 2 achieve transmission agency better.
For the ease of processing and assembling, above-mentioned spacing steel bushing 5 is mutually concordant near the end face of flap with valve gap 1 near the end face of flap.Directly be weldingly connected between the spacing steel bushing 5 of the present embodiment and valve gap 1, can realize by directly welding with the junction of the edges of two sheets of paper place of valve gap 1 at spacing steel bushing 5, only needing processing weld seam, decreasing welding job amount.
Further, valve gap 1 is also provided with seamless steel pipe 4 away from one end of flap, valve rod rotatably in be placed on seamless steel pipe 4.The present invention utilizes seamless steel pipe 4 pairs of valve rods to protect, and avoids valve rod directly to contact with cryogenic media, improves the working life of valve rod.
In order to improve the working life of seamless steel pipe 4, screw-thread fit between seamless steel pipe 4 and valve gap 1 and both circumferences are welded and fixed.Now seamless steel pipe 4 is not only threaded with valve gap 1 and is also welded and fixed, and both join strengths are better, improves crackle, the metaboly of seamless steel pipe 4 because occurring by medium active force.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a stop valve, comprise valve rod, be coated at the transmission swivel nut (2) of described valve rod and be coated at the valve gap (1) of described transmission swivel nut (2), the inwall of described transmission swivel nut (2) is provided with internal thread, and described valve rod has the thread section with the screw-internal thread fit of described transmission swivel nut (2); It is characterized in that, interference fit or screw-thread fit between the outer wall of described transmission swivel nut (2) and described valve gap (1), and described valve gap (1) is weldingly connected along the circumference of described transmission swivel nut (2) and described transmission swivel nut (2), the weld seam between described valve gap (1) and described transmission swivel nut (2) runs through the whole circumference of described transmission swivel nut (2).
2. stop valve as claimed in claim 1, it is characterized in that, screw-thread fit between the outer wall of described transmission swivel nut (2) and described valve gap (1), and the inwall of described valve gap (1) has the first spacing preiection limiting described transmission swivel nut (2) and move axially to side;
Described stop valve also comprises the spacing steel part that the described transmission swivel nut (2) of restriction moves axially to opposite side, described spacing steel part is resisted against the end of described transmission swivel nut (2) away from described first spacing preiection, and described transmission swivel nut (2) is welded with described valve gap (1) by described spacing steel part;
Wherein, the outer wall of described spacing steel part welds with the circumference of described valve gap (1), described valve rod rotatably in be placed on the mounting hole of described bounding means.
3. stop valve as claimed in claim 2, it is characterized in that, described first spacing preiection is arranged on described valve gap (1) near one end of the flap of described stop valve and offsets near the end of described flap with described transmission swivel nut (2), and described spacing steel part and described transmission swivel nut (2) offset away from the end of described flap.
4. stop valve as claimed in claim 3, it is characterized in that, described spacing steel part is seamless steel pipe (4), described seamless steel pipe (4) is welded with described valve gap (1) by adapter steel bushing (3), and the outer wall of described transmission swivel nut (2) is by described adapter steel bushing (3) and described valve gap (1) screw-thread fit; Wherein:
Described adapter steel bushing (3) is coated at described seamless steel pipe (4) away from one end of described flap, described adapter steel bushing (3) is coated at described transmission swivel nut (2) near one end of described flap, and the two ends of described adapter steel bushing (3) are welded with the circumference of described valve gap (1) and the circumference of described seamless steel pipe (4) respectively;
The inwall of described adapter steel bushing (3) is provided with internal thread, the outer wall of described transmission swivel nut (2) is provided with the outside thread with the screw-internal thread fit of described adapter steel bushing (3).
5. stop valve as claimed in claim 4, it is characterized in that, the outer wall of described seamless steel pipe (4) is also provided with the outside thread with the screw-internal thread fit of described adapter steel bushing (3), and the inwall of described adapter steel bushing (3) being also provided with the second spacing preiection moved axially for limiting described transmission swivel nut (2), the confined planes of described second spacing preiection is mutually concordant with the confined planes of described seamless steel pipe (4).
6. the stop valve as described in claim 4 or 5, is characterized in that, described valve gap (1) is away from the annular spacing groove end face of described flap also offered for spacing described adapter steel bushing (3).
7. stop valve as claimed in claim 2, is characterized in that, described first spacing preiection is arranged on described valve gap (1) away from one end of the flap of described stop valve and offsets with the end of described transmission swivel nut (2) away from described flap;
Described spacing steel part is the spacing steel bushing (5) offseted near the end of described flap with described transmission swivel nut (2), and described spacing steel bushing (5) is welded with the circumference of described valve gap (1); Wherein:
The inwall of described valve gap (1) is provided with internal thread, and the outer wall of described transmission swivel nut (2) is provided with the outside thread with the screw-internal thread fit of described valve gap (1), the outer wall of described spacing steel bushing (5) is provided with the outside thread with the screw-internal thread fit of described valve gap (1).
8. stop valve as claimed in claim 7, is characterized in that, described spacing steel bushing (5) is mutually concordant near the end face of described flap with described valve gap (1) near the end face of described flap.
9. as claimed in claim 7 or 8 stop valve, it is characterized in that, described valve gap (1) is also provided with seamless steel pipe (4) away from one end of described flap, described valve rod rotatably in be placed on described seamless steel pipe (4).
10. stop valve as claimed in claim 9, is characterized in that, screw-thread fit between described seamless steel pipe (4) and described valve gap (1) and both circumferences are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606120.6A CN104373610B (en) | 2014-10-31 | 2014-10-31 | A kind of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606120.6A CN104373610B (en) | 2014-10-31 | 2014-10-31 | A kind of stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373610A true CN104373610A (en) | 2015-02-25 |
| CN104373610B CN104373610B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410606120.6A Active CN104373610B (en) | 2014-10-31 | 2014-10-31 | A kind of stop valve |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535369U (en) * | 2009-06-05 | 2010-07-28 | 陈锦法 | All-welded pipeline control valve |
| CN103775656A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature high-pressure stop valve |
| CN203725998U (en) * | 2014-03-21 | 2014-07-23 | 浙江三花股份有限公司 | Welding assembly and valve body |
| CN203784355U (en) * | 2014-01-07 | 2014-08-20 | 章荣生 | Welding ball valve with prolonged handle |
| US20140284509A1 (en) * | 2011-12-08 | 2014-09-25 | Kabushiki Kaisha Toshiba | Valve apparatus, method of manufacturing valve apparatus, and method of repairing valve apparatus |
| CN204201121U (en) * | 2014-10-31 | 2015-03-11 | 成都欣国立低温科技有限公司 | A kind of stop valve |
-
2014
- 2014-10-31 CN CN201410606120.6A patent/CN104373610B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535369U (en) * | 2009-06-05 | 2010-07-28 | 陈锦法 | All-welded pipeline control valve |
| US20140284509A1 (en) * | 2011-12-08 | 2014-09-25 | Kabushiki Kaisha Toshiba | Valve apparatus, method of manufacturing valve apparatus, and method of repairing valve apparatus |
| CN203784355U (en) * | 2014-01-07 | 2014-08-20 | 章荣生 | Welding ball valve with prolonged handle |
| CN103775656A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature high-pressure stop valve |
| CN203725998U (en) * | 2014-03-21 | 2014-07-23 | 浙江三花股份有限公司 | Welding assembly and valve body |
| CN204201121U (en) * | 2014-10-31 | 2015-03-11 | 成都欣国立低温科技有限公司 | A kind of stop valve |
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|---|---|
| CN104373610B (en) | 2017-09-19 |
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