CN206655961U - A kind of feed screw nut drive-type DC stop valve - Google Patents
A kind of feed screw nut drive-type DC stop valve Download PDFInfo
- Publication number
- CN206655961U CN206655961U CN201720447677.9U CN201720447677U CN206655961U CN 206655961 U CN206655961 U CN 206655961U CN 201720447677 U CN201720447677 U CN 201720447677U CN 206655961 U CN206655961 U CN 206655961U
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- CN
- China
- Prior art keywords
- bonnet
- valve
- valve body
- valve rod
- nut
- 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
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Abstract
The utility model discloses a kind of feed screw nut's drive-type DC stop valve, including handwheel, valve rod, locking axle sleeve, annular magnetic sheet, bonnet, nut, filler, bellows, valve body and flap；Valve rod is divided into four sections from top to bottom, it is the screwed side's axis of cone in top, the square shaft and screw mandrel and the Step Shaft of bottom at middle part respectively, threaded side's axis of cone is used for the handwheel that is connected, annular magnetic sheet is located at the junction of the square axis of cone and square shaft, locking axle sleeve is located at square shaft and engaged with bonnet, nut is located at screw mandrel and is connected with bonnet, and nut interior is machined with raceway and is placed with ball；Bonnet is arranged on valve body, and the middle and lower part of valve rod is provided with bellows, and bellows is located at the lower section of bonnet and the top of flap.The utility model coordinates ball and nut, achievable valve rod to move up with opening and closing cut-off valve by the screw mandrel of valve rod, can improve operating efficiency；There is auto-lock function with the valve rod that engages of bonnet by cooperation of the square shaft with locking device and locking axle sleeve simultaneously.
Description
Technical field
The utility model belongs to mechanical engineering valve field, and in particular to a kind of feed screw nut drive-type DC stop valve.
Background technology
Valve is a kind of pressure pipeline element, and it is situated between for changing pipeline section and media flow direction, control conveying
The pressure of matter, flow, a kind of device of temperature.In national economy, valve is indispensable industrial pipeline annex and equipment
One of.Stop valve, pipe valve is also, because frictional force is small between sealing surface during its opening and closing, durability is preferable, and Lift is not
Greatly, easy to manufacture, easy to maintenance, the features such as suitable for mesolow and high pressure, use is quite varied.
Stop valve opening and closing element is flap, generally flat seal and conical surface seal, and center line of the flap along valve seat is made straight
Line moves, and flap is separated or is closed with the sealing surface of valve seat with ovable valve stem by handwheel, is in stop valve and is turned on and off
State.Common stop valve structure is simple, and suitable for various pressure environments, but fluid resistance is bigger than normal caused by its internal structure, together
When open and close needed for power it is also larger, flap is impacted by medium when especially closing so that bigger power is needed during closing.Separately
Outside, when existing stop valve is applied to cryogenic media, contact of the valve rod with medium causes the reduction of valve rod temperature, further such that close
Packing material temperature degree is reduced so as to influence sealing property.
The content of the invention
The purpose of this utility model is to provide that a kind of hoisting capacity is small and feed screw nut's drive-type with auto-lock function is straight
Flow shutoff valve.
The purpose of this utility model is achieved through the following technical solutions：
A kind of feed screw nut drive-type DC stop valve, including handwheel, valve rod, annular magnetic sheet, locking axle sleeve, bonnet, ripple
Line pipe and valve body, the valve body is interior to be provided with flap, and filler is provided with the base of bonnet；The valve rod is divided into four sections from top to bottom,
It is the screwed side's axis of cone in top, the square shaft and screw mandrel and the Step Shaft of bottom at middle part respectively, threaded side's axis of cone is used
In the handwheel that is connected, annular magnetic sheet is located at the junction of the square axis of cone and square shaft, and locking axle sleeve is located at square shaft and nibbled with bonnet
Close, nut is located at screw mandrel and is connected with bonnet, and nut interior is machined with raceway and is placed with ball；Bonnet is arranged on valve body
On, the middle and lower part of valve rod is provided with bellows, and bellows is located at the lower section of bonnet and the top of flap, and Step Shaft is used for connection valve
Valve.
Further, the valve body includes upper valve body and lower valve body, and upper valve body is connected with lower valve body by flange, and connects
Place is provided with gasket seal.
The beneficial effects of the utility model are：
(1) the utility model forms rolled threads pair by screw mandrel and nut and ball engagement, instead of traditional slip
Screw thread pair, power needed for opening and closing cut-off valve can be reduced, improve operating efficiency；
(2) the utility model is by the cooperation of locking axle sleeve and square shaft, and locking axle sleeve and bonnet engage, and make cut-off
Valve has locking function；
(3) the utility model is provided with bellows, buffer fluid medium and valve rod in the middle and lower part of valve rod, reduces temperature pair
The influence of airtight and watertight padding；
(4) valve body is set to upper valve body and lower valve body by the utility model, is easily installed and replaces bellows.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of valve rod of the present utility model；
Fig. 3 is the structural representation of locking axle sleeve of the present utility model；
Fig. 4 is the structural representation of bonnet of the present utility model and nut.
Marked in figure：1st, handwheel；2nd, valve rod；3rd, annular magnetic sheet；4th, locking axle sleeve；5th, bonnet；6th, nut；7th, ball；8、
Hold-down grid；9th, gland；10th, latch；11st, filler；12nd, upper valve body；13rd, bellows；14th, valve clack cover；15th, flap；16、
Split annulus；17th, gasket seal；18th, lower valve body；21st, the square axis of cone；22nd, square shaft；23rd, screw mandrel；24th, Step Shaft；51st, bonnet body；
52nd, support frame；53rd, base.
Embodiment
Embodiment：
As shown in Figure 1 to 4, the present embodiment provide feed screw nut's drive-type DC stop valve include handwheel 1, valve rod 2,
Annular magnetic sheet 3, locking axle sleeve 4, bonnet 5, nut 6, ball 7, hold-down grid 8, gland 9, latch 10, filler 11, upper valve
Body 12, bellows 13, valve clack cover 14, flap 15, split annulus 16, gasket seal 17 and lower valve body 18；The valve rod 2 is from upper past
Under be divided into four sections, be the screwed side's axis of cone 21 in top, the square shaft 22 and screw mandrel 23 and the Step Shaft of bottom at middle part respectively
24, its structure is as shown in Fig. 2 the square axis of cone 21 is used to be fixedly connected with handwheel 1；The square axis of cone 21 and the junction of square shaft 22 are provided with
Annular magnetic sheet 3, annular magnetic sheet 3 are used to adsorb handwheel 1 and locking axle sleeve 4；Locking axle sleeve 4 is located at square shaft 22, locking axle sleeve 4
Upper surface is machined with the square hole coordinated with square shaft 22, is machined with the gear teeth on lower surface, its structure is as shown in Figure 3；Set on screw mandrel 23
There are bonnet 5 and nut 6, bonnet 5 includes bonnet body 51, support frame 52 and base 53, and bonnet body 51 passes through support frame 52 and base
53 connections, base 53 is fixedly mounted on upper valve body 12, its structure as shown in figure 4, be machined with through hole in bonnet body 51, through hole it is upper
End face is machined with the gear teeth with the 4 identical number of teeth of locking axle sleeve, engages with bonnet 5 for locking axle sleeve 4, has on the lower surface of through hole
Thread mill drilling, nut 6 is arranged in through hole from the bottom of bonnet body 51, and is bolted, and raceway is machined with screw thread
And ball 7 is placed with, screw mandrel 23 forms rolled threads pair with nut 6, traditional slip screw thread pair is instead of, so as to reduce
Power needed for opening and closing cut-off valve.Filler 11 is provided between base 53 and valve rod 2, and passes through hold-down grid 8, gland 9 and latch
10 are fixedly mounted, and the middle and lower part of valve rod 2 is provided with bellows 13, and in upper valve body 12, the upper end of bellows 13 is connected with base 53,
Lower end is connected with valve clack cover 14, and valve clack cover 14, flap 15 and split annulus 16, Step Shaft 24 and flap 15 are provided with upper valve body 12
Connected with split annulus 16；Gasket seal 17 is installed between upper valve body 12 and lower valve body 18 and is bolted to connection.
Operation principle of the present utility model is as follows：
(1) when being turned on and off stop valve, annular magnetic sheet 3 is pushed into upwards and is adsorbed in the lower surface of handwheel 1, and cause lock
Mandrel set 4 moves and is adsorbed in the annular lower section of magnetic sheet 3 upwards along square hole, forward or backwards rotation hand wheel 1 so that the silk of valve rod 2
Bar 23 is by the cooperation with nut 6 and ball 7, with feed screw nut type of drive with the flap 15 and gasket seal on ovable valve stem 2
17 separation or fitting, so as to realize valve opening and closing.
(2) when flap 15 keeps some position aperture or fits in gasket seal 17 completely, valve rod 2 need to be locked.Now,
Slide downward locking axle sleeve 4 and the gear teeth meshing for making its gear teeth and bonnet 5, when needing to lock valve rod 2 in a certain position, locking
The gear teeth of axle sleeve 4 may with the top gear teeth of bonnet 5 can not it is completely corresponding on, can now pass through and valve rod 2 is finely tuned in the range of a tooth
And locking axle sleeve 4 makes locking axle sleeve 4 be engaged with bonnet 5.
(3) valve rod 2 is connected through bellows 13 with valve clack cover 14, flap 15 and split annulus 16.The upper end of bellows 13 with
Bonnet 5 is connected, and lower end is connected with valve clack cover 14, is compressed with the up and down motion of valve rod 2 and is stretched bellows 13 so that valve rod
2 fluid isolation with flowing through valve body, shadow of the cryogenic media using the lower pair of performance of airtight and watertight padding 11 being in contact with valve rod 2 can be reduced
Ring, to prevent leakage of the fluid media (medium) at bonnet 5.
Described above is only the utility model preferred embodiment, but the scope of protection of the utility model is not limited to
This, any transformation carried out based on technical scheme provided by the utility model and utility model design and replacement should all be covered
In the scope of protection of the utility model.
Claims (2)
1. a kind of feed screw nut drive-type DC stop valve, including handwheel, valve rod, annular magnetic sheet, bonnet and valve body, the valve body
It is interior to be provided with flap, it is provided with filler in the base of bonnet；It is characterized in that：Also include locking axle sleeve and bellows, the valve rod from
On be down divided into four sections, be the screwed side's axis of cone in top, the square shaft and screw mandrel and the Step Shaft of bottom at middle part respectively, band
The square axis of cone of screw thread is used for the handwheel that is connected, and annular magnetic sheet is located at the junction of the square axis of cone and square shaft, and locking axle sleeve is positioned at side
Engaged at axle and with bonnet, nut is located at screw mandrel and is connected with bonnet, and nut interior is machined with raceway and is placed with ball；Valve
Lid is arranged on valve body, and the middle and lower part of valve rod is provided with bellows, and bellows is located at the lower section of bonnet and the top of flap, Step Shaft
For connecting flap.
A kind of 2. feed screw nut drive-type DC stop valve according to claim 1, it is characterised in that：The valve body includes
Upper valve body and lower valve body, upper valve body and lower valve body are connected by flange, and junction is provided with gasket seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720447677.9U CN206655961U (en) | 2017-04-26 | 2017-04-26 | A kind of feed screw nut drive-type DC stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720447677.9U CN206655961U (en) | 2017-04-26 | 2017-04-26 | A kind of feed screw nut drive-type DC stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206655961U true CN206655961U (en) | 2017-11-21 |
Family
ID=60320235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720447677.9U Expired - Fee Related CN206655961U (en) | 2017-04-26 | 2017-04-26 | A kind of feed screw nut drive-type DC stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206655961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035870A (en) * | 2017-04-26 | 2017-08-11 | 成都大学 | A kind of feed screw nut drive-type DC stop valve |
| CN109505987A (en) * | 2018-10-29 | 2019-03-22 | 刘慧华 | A kind of oil valve device that band is multi-stage sealed |
-
2017
- 2017-04-26 CN CN201720447677.9U patent/CN206655961U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035870A (en) * | 2017-04-26 | 2017-08-11 | 成都大学 | A kind of feed screw nut drive-type DC stop valve |
| CN109505987A (en) * | 2018-10-29 | 2019-03-22 | 刘慧华 | A kind of oil valve device that band is multi-stage sealed |
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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: 20171121 Termination date: 20210426 |