CN208311470U - A kind of forged steel flange shut-off valve - Google Patents
A kind of forged steel flange shut-off valve Download PDFInfo
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- CN208311470U CN208311470U CN201820531688.XU CN201820531688U CN208311470U CN 208311470 U CN208311470 U CN 208311470U CN 201820531688 U CN201820531688 U CN 201820531688U CN 208311470 U CN208311470 U CN 208311470U
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- deck
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Abstract
The utility model discloses a kind of forged steel flange shut-off valves, belong to pipeline valve, its structure includes valve body, valve deck, valve rod, flap, filler and handwheel etc., the structure mainly made is improved are as follows: one, by the packing press ring made of forging respectively of gland made of conventional cast and the replacement of filler briquetting, the two, which successively compresses, to be mounted at the top of filler, this forging structure neither influences the compression locking of filler, is also easier to controlled forge process dimensional accuracy；Two, valve body and flange are separated into individually forging, and is welded and fixed after being interconnected between flange and port by external screw thread axis and internal thread hole, therefore both facilitated the forging and connection of flange, also can guarantee the concentricity between flange and valve body；Three, it is equipped with back seal structure between valve rod and valve deck inner bottom surface, then can form back seal between valve deck when valve rod rises mobile, to solve the sealing problem of replacement filler；Four, linear sealing structure is used between flap and limbers, sealing effect is relatively reliable.
Description
Technical field
The utility model relates to the shut-off valves, in particular to a kind of forged steel flange shut-off valve in a kind of pipeline valve.
Background technique
Currently, the structure of forged steel flange shut-off valve is mainly by valve body, valve deck, valve rod, flap, filler, gland, valve
Stem nut and handwheel etc. are constituted, and gland therein is limited to the complexity of structure, mostly uses cast greatly, using forging
It would become hard to control dimensional accuracy；Meanwhile flange can be all arranged for connecting in valve body both ends, but flange is all directly to forge with valve body
One, this makes the concentricity between flange and the forging dimensional accuracy of valve body, especially flange and valve body hardly result in guarantor
Card；In addition, the valve rod of forged steel flange shut-off valve only drives flap decline mobile and limbers in sealing contact, but cannot achieve
Rise mobile sealing, then the filler between valve rod top and valve deck be set when being replaced, is just difficult to solve sealing problem,
It brings great inconvenience to users.
Summary of the invention
There is provided the technical problem to be solved by the utility model is to overcome the deficiencies of existing technologies a kind of can effectively protect
It demonstrate,proves the forging precision of components and filler is made also to can be carried out the forged steel flange shut-off valve of sealing when replacing.
The technical issues of the utility model, is achieved through the following technical solutions:
A kind of forged steel flange shut-off valve including valve body, the flange being separately mounted in the port of valve body both ends, is sealingly mounted at
The valve deck and lifting moving of body top are sealingly mounted at the valve rod in valve deck, which stretches out the valve rod spiral shell at the top of valve deck
Mother's installation handwheel, valve rod lower end are protruded into and install flap in valve body, and flap is intracorporal with the valve by the lifting moving of valve rod
Limbers forms opening and closing in sealing contact；It is equipped between the valve rod and valve deck and is used for valve rod lifting moving airtight and watertight padding, institute
The packing press ring and filler briquetting being sequentially arranged at the top of filler are equipped in the valve deck stated, the packing press ring and filler briquetting are
It forges, and compresses the locking filler；The flange is also to forge, and is equipped between the flange and port and is mutually connected
The external screw thread axis and internal thread hole connect, and be welded and fixed between external screw thread axis and internal thread hole.
It is welded and fixed between the external screw thread axis inner face and internal thread hole outer end face, the cross section of the solder joint is in three
It is angular.
The valve deck inner bottom surface is equipped with the upper sealing surface of bell mouth shape, and tapered lower sealing is accordingly equipped on valve rod
Face, the lower sealing surface back seal are equipped with the upper sealing surface.
The flap is in back taper bench-type, and the flap is close by the outer circumference surface and limbers composition line of back taper bench-type
Sealing-in touching.
Compared with prior art, the utility model is mainly to carry out to the related forging components of forged steel flange shut-off valve
New design and improvement, one, by gland made of conventional cast using respectively forge made of packing press ring and filler pressure
Block replaces, then packing press ring and filler briquetting are successively compressed locking and are mounted at the top of filler, since gland uses two
Components individually forge, neither the compression locking of influence filler, are also easier to the forging dimensional accuracy of control components；Two, will
Valve body and flange separate individually forging, and are welded after being interconnected between flange and port by external screw thread axis and internal thread hole
Fixation is connect, this connection structure had both facilitated the forging and connection of flange, and also can guarantee the concentricity between flange and valve body；
Three, it is equipped with back seal structure between valve rod and valve deck inner bottom surface, then can be formed to fall between valve deck when valve rod rises mobile
Sealing, to solve the sealing problem of replacement filler；Four, linear sealing structure, sealing effect are used between flap and limbers
It is relatively reliable compared to traditional face sealing.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model.
Fig. 2 is the structural schematic diagram of flange.
Linear sealing cutaway view Amplified image of the Fig. 3 between flap and limbers.
Specific embodiment
It will elaborate again by above-mentioned attached drawing to the utility model embodiment below.
As shown in Fig. 1 ~ Fig. 3,1. valve bodies, 11. internal thread holes, 12. solder joints, sealing surface, 14. limbers, 2. methods on 13.
Orchid, 21. external screw thread axis, 3. flaps, 4. valve rods, 41. lower sealing surfaces, 5. fillers, 6. packing press rings, 7. filler briquettings, 8. valve decks,
9. valve stem nut, 10. handwheels.
A kind of forged steel flange shut-off valve, as shown in Figure 1, being related in a kind of pipeline valve for opening and closing the cut-off of flow of media
Valve, structure are mainly made of valve body 1, valve deck 8, valve rod 4, flap 3, filler 5 and handwheel 10 etc..
It is equipped with the valve chamber of horizontal perforation in the valve body 1, is equipped with flange 2, and flange in the port at the valve chamber both ends
Seperated forging structure is used with valve body 1, i.e. flange 2 and valve body 1 is individually to forge；The flange 2 is equipped with such as
Along axial line horizontal-extending external screw thread axis 21 outward shown in Fig. 2, the port of valve body 1 is accordingly set as internal thread hole 11, then method
Orchid 2 can be passing through external screw thread axis 21 in the internal thread hole 11 that external screw thread axis 21 is connected to port in such a way that screw thread screws
With the connection type of internal thread hole 11, the concentricity between flange 2 and valve body 1 can effectively ensure that, and flange 2 is individually forged
It makes, can also facilitate the forging dimensional accuracy of control flange 2；Meanwhile after external screw thread axis 21 is connect in place with internal thread hole 11, outside
It being welded and fixed between 11 outer end face of 21 inner face of thread spindle and internal thread hole, the cross section of the solder joint 12 is in up-side down triangle,
The purpose of valve body 1 and the formation integral structure of flange 2 is realized by welding.
Equipped with axial line perpendicular to the limbers 14 of horizontal plane in the valve body 1, bolt seal is equipped at the top of valve body 1 and is connected
The valve deck 8 connect is equipped with the valve stem nut 9 being threadedly coupled at the top of valve deck；The valve rod 4 is vertically arranged in valve deck 8, the valve
4 upper end of bar stretches out the valve stem nut 9 at 8 top of valve deck and is equipped with the handwheel 10 being fixedly mounted, and the installation of valve body 1 is protruded into 4 lower end of valve rod
Flap 3, the flap are located at 14 top of limbers.
When rotation hand wheel 10 is rotated with ovable valve stem 4, which just converts rotational motion to lifting by valve stem nut 9 and moves
It is dynamic, and then flap 3 and limbers 14 is driven to form opening and closing in sealing contact；The flap 3 is in back taper bench-type, which passes through
Back taper bench-type outer circumference surface constitutes linear sealing as shown in Figure 3 with limbers 14 and contacts, and has more compared to traditional face sealing
Add reliable sealing effect.
It is additionally provided between the valve rod 4 and valve deck 8 for valve rod lifting moving airtight and watertight padding 5, i.e., filler is as valve
The dynamic seal of 4 lifting moving of bar, valve deck 8 is interior to be equipped with the packing press ring 6 and filler briquetting 7 for being sequentially arranged at 5 top of filler, should
Packing press ring 6 and filler briquetting 7 are individually to forge, this is that traditional forged steel flange shut-off valve is replaced by two components
In the molding gland of forging type that uses always, then packing press ring 6 and filler briquetting 7 are successively compressed into locking and are mounted on
5 top of filler, since gland is replaced in such a way that packing press ring 6 and filler briquetting 7 individually forge, neither influences
The compression of filler 5 locks, and is also easier to the forging dimensional accuracy of control components.
In addition, 8 inner bottom surface of valve deck is additionally provided with the upper sealing surface 13 of bell mouth shape, be accordingly equipped on valve rod 4 it is tapered under
Sealing surface 41 is also able to achieve sealing when valve rod 4 rises movement and makes 41 back seal of lower sealing surface with sealing surface 13 is loaded onto；?
That is by this back seal structure, it is close when the filler 5 being solved perfectly between 4 top of valve rod and valve deck 8 is replaced
Envelope problem.
The utility model can be applied to small dimension shut-off valve, be formed using the molding components of forging method than forging type
Founding part surface it is more smooth, material is finer and close, and service performance is more superior.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (4)
1. a kind of forged steel flange shut-off valve, including valve body (1), the flange (2) being separately mounted in the port of valve body both ends, sealing peace
Valve deck (8) and lifting moving at the top of valve body (1) are sealingly mounted at the valve rod (4) in valve deck (8), which stretches out
Valve stem nut (9) at the top of valve deck (8) installs handwheel (10), and valve rod (4) lower end is protruded into valve body (1) and installs flap (3), and valve
Valve by valve rod (4) lifting moving and form opening and closing in sealing contact with the limbers (14) in the valve body (1)；The valve rod
(4) it is equipped between valve deck (8) and is used for valve rod (4) lifting moving airtight and watertight padding (5), it is characterised in that the valve deck (8)
It is interior to be equipped with the packing press ring (6) and filler briquetting (7) being sequentially arranged at the top of filler (5), the packing press ring (6) and filler briquetting
It (7) is to forge, and compress the locking filler (5)；The flange (2) is also to forge, the flange and port
Between be equipped with the external screw thread axis (21) and internal thread hole (11) interconnected, and between external screw thread axis (21) and internal thread hole (11)
It is welded and fixed.
2. a kind of forged steel flange shut-off valve according to claim 1, it is characterised in that described external screw thread axis (21) inner end
It is welded and fixed between face and internal thread hole (11) outer end face, the cross section of the solder joint (12) is in up-side down triangle.
3. a kind of forged steel flange shut-off valve according to claim 1, it is characterised in that described valve deck (8) inner bottom surface is equipped with
The upper sealing surface (13) of bell mouth shape is accordingly equipped with tapered lower sealing surface (41), the lower sealing surface back seal on valve rod (4)
It is equipped with the upper sealing surface (13).
4. a kind of forged steel flange shut-off valve according to claim 1, it is characterised in that the flap (3) is in inversed taper platform
Type, the flap (3) constitute linear sealing with the limbers (14) by the outer circumference surface of back taper bench-type and contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820531688.XU CN208311470U (en) | 2018-04-16 | 2018-04-16 | A kind of forged steel flange shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820531688.XU CN208311470U (en) | 2018-04-16 | 2018-04-16 | A kind of forged steel flange shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311470U true CN208311470U (en) | 2019-01-01 |
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ID=64719812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820531688.XU Active CN208311470U (en) | 2018-04-16 | 2018-04-16 | A kind of forged steel flange shut-off valve |
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| Country | Link |
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| CN (1) | CN208311470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237486A (en) * | 2020-01-18 | 2020-06-05 | 上海亚奥阀门有限公司 | Forged steel oxygen stop valve |
-
2018
- 2018-04-16 CN CN201820531688.XU patent/CN208311470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237486A (en) * | 2020-01-18 | 2020-06-05 | 上海亚奥阀门有限公司 | Forged steel oxygen stop valve |
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