CN207796099U - Weld shut-off valve in middle part - Google Patents
Weld shut-off valve in middle part Download PDFInfo
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- CN207796099U CN207796099U CN201721812692.5U CN201721812692U CN207796099U CN 207796099 U CN207796099 U CN 207796099U CN 201721812692 U CN201721812692 U CN 201721812692U CN 207796099 U CN207796099 U CN 207796099U
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- valve
- valve rod
- rotation
- prevention sleeve
- rotating prevention
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Abstract
The utility model is related to a kind of middle parts to weld shut-off valve, including valve body, valve rod, flap and valve deck, anti-rotation chamber is provided between valve rod and valve rod hole, anti-rotation intracavitary is provided with the rotating prevention sleeve for being sheathed on stem outer circumference, rotating prevention sleeve inner circumferential is provided with internal spline, the periphery of valve rod part corresponding with rotating prevention sleeve is provided with the external splines matched with internal spline card, anti-rotation intracavitary week is in screw-thread fit with rotating prevention sleeve periphery, anti-rotation bottom of chamber portion is provided with the limited step to offset with rotating prevention sleeve bottom, valve deck is correspondingly arranged on the auxiliary section with anti-rotation chamber screw-thread fit with rotating prevention sleeve, auxiliary section is equipped with anti-rotation sealing element with respect to pressure between valve rod axial direction and rotating prevention sleeve.Using the above scheme, the utility model provides a kind of middle part for avoiding valve rod from circumferentially rotating welding shut-off valve.
Description
Technical field
The utility model is related to a kind of shut-off valves, and in particular to a kind of middle part welding shut-off valve.
Background technology
Shut-off valve is also known as pipe valve valve, belongs to forced seal formula valve, and opening and closing element is the flap of stopper, and sealing surface is in plane
Or the extra large conical surface, flap are for linear motion along the center line of valve seat.
Traditional shut-off valve includes valve body, valve rod, flap and valve deck, and runner is provided in valve body, and valve rod is located on valve body
Side is provided with operating mechanism, and operating mechanism is located at cut-out and the connection that runner is realized in the flap lifting in runner by valve rod driving
Logical, valve stem top is provided with the turntable of driving stem lifting, and when turntable rotates, valve rod is easy tod produce with a small amount of rotation of its generation,
The rotation of valve rod can cause flap and the circumferential of valve body to rub, and cause flap to wear, influence sealing performance.
Invention content
In view of the deficienciess of the prior art, avoiding valve rod from circumferentially rotating the purpose of this utility model is to provide a kind of
Weld shut-off valve in middle part.
To achieve the above object, the utility model provides following technical solution：Including valve body, valve rod, flap and valve deck,
Runner is provided in the valve body, the valve rod, which is located above valve body, is provided with operating mechanism, and the operating mechanism is logical
Cut-out and unicom that runner is realized in the flap lifting that valve rod driving is located in runner are crossed, the valve body is provided with to be passed through for valve rod
Valve rod hole, the valve deck is covered on valve rod hole upper end and passed through for valve rod, it is characterised in that：The valve rod and valve rod hole
Between be provided with anti-rotation chamber, the anti-rotation intracavitary is provided with the rotating prevention sleeve for being sheathed on stem outer circumference, the rotating prevention sleeve
Inner circumferential is provided with internal spline, and the periphery of valve rod part corresponding with rotating prevention sleeve is provided with the outer flower matched with internal spline card
Key, the anti-rotation intracavitary week are in screw-thread fit with rotating prevention sleeve periphery, and the anti-rotation bottom of chamber portion is provided with and rotating prevention sleeve
The limited step that bottom offsets, the valve deck are correspondingly arranged on the auxiliary section with anti-rotation chamber screw-thread fit, institute with rotating prevention sleeve
The auxiliary section stated is equipped with anti-rotation sealing element with respect to pressure between valve rod axial direction and rotating prevention sleeve.
By using above-mentioned technical proposal, the rotating prevention sleeve being installed in place makes vertically to rise with the valve rod of its spline fitted
Drop, it is entirely avoided the abrasion of flap caused by circumferential movement reduces closing seam, in addition, anti-rotation chamber is in rotating prevention sleeve
Detachable cooperation can select the rotating prevention sleeve of different size according to the valve rod of different size, improve the scope of application, install same when valve deck
When rotating prevention sleeve is mounted, simplify internal structure.
The utility model is further arranged to：The valve deck is extended from top to bottom bending interconnecting piece and operation peace
Dress portion, the operating mechanism include valve stem nut and handwheel, the valve stem nut be rotatably dispose in operation mounting portion and with
Threaded stem coordinates, the handwheel driving stem nut rotation, and the valve stem nut is located at the setting of operation mounting portion bottom
There is limiting section, the handwheel is located above operation mounting portion and periphery and handwheel inner circumferential are in spline fitted, the valve rod spiral shell
Mother, which is located above handwheel, is provided with the lock nut that handwheel is limited in valve stem nut, the lock nut and valve stem nut position
Be respectively arranged at cooperation it is anti-error tear notch open, the lock nut and valve stem nut it is anti-error tear open notch combine constitute it is anti-error
Tear bolt hole open, it is described it is anti-error tear open to be provided in bolt hole anti-error tear bolt open.
By using above-mentioned technical proposal, lock nut be located at cooperation with valve stem nut be respectively arranged with it is anti-error tear open it is scarce
Mouthful, it is anti-error to tear that notch composition is anti-error to tear bolt hole open open, only with small instruments and tools by it is anti-error tear that bolt unloads open could be by handwheel and valve rod
Nut is dismantled, and is avoided mistake active force that lock nut is made to be rotated relative to valve stem nut, under the mislanding for causing handwheel, is influenced work
Stability.
The utility model is further arranged to：The valve deck is provided with the via passed through for valve rod, the via top
Portion is provided with packing cavity, and filler is provided in the packing cavity, is provided with above the valve deck filler pressure being set to filler
The gland of chamber and the valve deck fixing piece that gland is fixed on to valve deck, press between the gland and filler and are equipped with
Pressing sleeve, the pressing sleeve are sheathed on stem outer circumference, and the pressing sleeve upper end is provided with extruding guide surface, the extruding guide surface
It is continuously decreased with far from pressing sleeve upper surface centre-height, the gland is provided with the through-hole passed through for valve rod, described
The edge of via bottoms is provided with extrusion fit face compatible with guide surface shape is squeezed.
By using above-mentioned technical proposal, for valve deck fixing piece when exerting a force to gland, gland can pass through pressing sleeve
It exerts a force to filler, the mode of transfer force of opposite gland and pressing sleeve plane contact, by the way of inclined-plane cooperation, the two coordinates more
Step up close, enables active force of the filler by bigger, improve sealing performance, the preferably fixed lead screw of valve deck fixing piece.
The utility model is further arranged to：The valve deck is located at and is provided with ecto-entad at valve body cooperation and is equipped with the
One welding surface and multistage positioning step, first welding surface are gradually increased with far from bonnet central height, the valve body
It is correspondingly arranged on multistage compatible with multistage positioning step shape with multistage positioning step and coordinates step, valve body setting
There is the second welding surface that is corresponding with the first welding surface and being welded and fixed with the first welding surface, second welding surface is with far from valve
Body centre-height continuously decreases.
By using above-mentioned technical proposal, valve deck is set to be accurately positioned with valve body with multistage step, the first welding surface
Formed between valve deck and valve body with the second welding surface trapezoidal shape for the molding forming cavity of welding material, make molding effect more
It is good, there is better stability and leakproofness.
The utility model is further arranged to：The runner with respect to flap both sides be respectively arranged with respectively with extraneous unicom
The first branch and the second branch, first branch with close to flap height gradually rise, second branch be in U
Shape.
By using above-mentioned technical proposal, no matter the first branch and the second branch of different structure will cut in which way
Only valve accesses pipeline, can effectively prevent being in the presence of adverse current in fluid deficiency.
The utility model is further described with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the structural schematic diagram of specific embodiment of the present invention；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the enlarged drawing of B in Fig. 1；
Fig. 4 is the enlarged drawing of C in Fig. 1.
Specific implementation mode
As shown in Fig. 1-Fig. 4, the utility model discloses a kind of middle parts to weld shut-off valve, including valve body 1, valve rod 2, valve
Valve 3 and valve deck 4 are provided with runner 11 in valve body 1, and valve rod 2 is located at 1 top of valve body and is provided with operating mechanism 5, and operating mechanism 5 is logical
Cut-out and unicom that runner 11 is realized in the lifting of flap 3 that the driving of valve rod 2 is located in runner 11 are crossed, valve body 1 is provided with to be worn for valve rod 2
The valve rod hole 12 crossed, valve deck 4 are covered on 12 upper end of valve rod hole and are passed through for valve rod 2, be provided between valve rod 2 and valve rod hole 12 anti-
Chamber 13 is rotated, is provided with the rotating prevention sleeve 6 for being sheathed on 2 periphery of valve rod in anti-rotation chamber 13,6 inner circumferential of rotating prevention sleeve is provided with internal spline
61, the periphery of the part corresponding with rotating prevention sleeve 6 of valve rod 2 is provided with blocks the external splines 21 matched with internal spline 61, in anti-rotation chamber 13
Week is in screw-thread fit with 6 periphery of rotating prevention sleeve, and 13 bottom of anti-rotation chamber is provided with the limited step 14 to offset with 6 bottom of rotating prevention sleeve,
Valve deck 4 is correspondingly arranged on the auxiliary section 41 with 13 screw-thread fit of anti-rotation chamber with rotating prevention sleeve 6, and auxiliary section 41 is axial with respect to valve rod 2
Pressure is equipped with anti-rotation sealing element 42 between rotating prevention sleeve 6, and the rotating prevention sleeve 6 being installed in place makes to erect with the valve rod of its spline fitted 2
To lifting, it is entirely avoided the abrasion of flap 3 caused by circumferential movement reduces closing seam, in addition, anti-rotation chamber 13 with it is anti-
Pivoted housing 6 can select the rotating prevention sleeve 6 of different size in detachable cooperation according to the valve rod 2 of different size, improve the scope of application, peace
Rotating prevention sleeve 6 is mounted simultaneously when filling valve deck 4, simplifies internal structure, anti-rotation sealing element 42 can be flat sealed pad.
Valve deck 4 is extended from top to bottom has bending interconnecting piece 43 and operation mounting portion 44, operating mechanism 5 to include valve rod spiral shell
Mother 51 with handwheel 52, valve stem nut 51 be rotatably dispose in operation mounting portion 44 and with 2 screw-thread fit of valve rod, 52 driving stem of handwheel
Nut 51 rotates, and valve stem nut 51 is located at 44 bottom of operation mounting portion and is provided with limiting section 511, and handwheel 52 is located at operation mounting portion
44 tops and periphery and 52 inner circumferential of handwheel are in spline fitted, and valve stem nut 51, which is located to be provided with above handwheel 52, limits handwheel 52
In the lock nut 53 of valve stem nut 51, lock nut 53, which is located at valve stem nut 51 at cooperation to be respectively arranged with, anti-error tears notch open
531, lock nut 53 and valve stem nut 51 it is anti-error tear open notch 531 combine constitute it is anti-error tear bolt hole open, it is anti-error to tear open in bolt hole
Be provided with it is anti-error tear bolt 532 open, lock nut 53 be located at cooperation with valve stem nut 51 be respectively arranged with it is anti-error tear notch 531 open,
It is anti-error tear open notch 531 form it is anti-error tear 532 hole of bolt open, only with small instruments and tools by it is anti-error tear that bolt 532 unloads open could be by handwheel
52 and valve stem nut 51 dismantled, avoid accidentally active force make lock nut 53 with respect to valve stem nut 51 rotation, cause handwheel 52
Mislanding under, influence job stability.
Valve deck 4 is provided with the via 45 passed through for valve rod 2, and 45 top of via is provided with packing cavity 451, in packing cavity 451
It is provided with filler 452,4 top of valve deck is provided with the pressure of filler 452 set on the gland 453 of packing cavity 451 and by filler pressure
Lid 453 is fixed on the valve deck fixing piece 454 of valve deck 4, and pressure is equipped with pressing sleeve 455, pressing sleeve 455 between gland 453 and filler 452
It is sheathed on 2 periphery of valve rod, 455 upper end of pressing sleeve, which is provided with, squeezes guide surface 4551, squeezes guide surface 4551 with far from pressing sleeve 455
End face center height continuously decreases, and gland 453 is provided with the through-hole 4531 passed through for valve rod 2, the side of 4531 bottom of through-hole
Edge is provided with extrusion fit face 4532 compatible with 4551 shape of guide surface is squeezed, and valve deck fixing piece 454 is to gland
When 453 force, gland 453 can be exerted a force by pressing sleeve 455 to filler 452, opposite gland 453 and 455 plane of pressing sleeve
The mode of transfer force of contact, by the way of inclined-plane cooperation, the two cooperation is even closer, and filler 452 is enable to be made by bigger
Firmly, sealing performance, the preferred fixed lead screw of valve deck fixing piece 454 are improved.
Valve deck 4 be located at be provided at 1 cooperation of valve body ecto-entad be equipped with the first welding surface 46 and multistage positioning step 47,
First welding surface 46 is gradually increased with far from 4 centre-height of valve deck, and valve body 1 is correspondingly arranged on multistage positioning step 47 and multistage
The compatible multistage of 47 shape of positioning step coordinates step 15, valve body 1 to be provided with corresponding with the first welding surface 46 and welded with first
The second welding surface 16 that junction 46 is welded and fixed, the second welding surface 16 is continuously decreased with far from 1 centre-height of valve body, by multistage platform
The cooperation of rank makes valve deck 4 be accurately positioned with valve body 1, the first welding surface 46 and the second welding surface 16 shape between valve deck 4 and valve body 1
Stepped cross for the molding forming cavity of welding material, keep molding effect more preferable, have better stability and leakproofness.
Runner 11 with respect to 3 both sides of flap be respectively arranged with respectively with the first branch 111 of extraneous unicom and the second branch
112, the first branch 111 is with gradually rising close to 3 height of flap, and the second branch 112 takes the shape of the letter U shape, first point of different structure
No matter portion 111 and the second branch 112, access pipeline by shut-off valve in which way, can effectively prevent going out in fluid deficiency
The now situation of adverse current.
Claims (5)
1. shut-off valve, including valve body, valve rod, flap and valve deck are welded in a kind of middle part, it is provided with runner in the valve body, it is described
Valve rod be located above valve body and be provided with operating mechanism, the operating mechanism is located at the flap liter in runner by valve rod driving
Drop realizes that the cut-out of runner and unicom, the valve body are provided with the valve rod hole passed through for valve rod, and the valve deck is covered on valve
Rod aperture upper end is simultaneously passed through for valve rod, it is characterised in that：Anti-rotation chamber is provided between the valve rod and valve rod hole, described is anti-
Rotation intracavitary is provided with the rotating prevention sleeve for being sheathed on stem outer circumference, and the rotating prevention sleeve inner circumferential is provided with internal spline, the valve rod
The periphery of part corresponding with rotating prevention sleeve is provided with the external splines matched with internal spline card, the anti-rotation intracavitary week and rotating prevention sleeve
Periphery is in screw-thread fit, and the anti-rotation bottom of chamber portion is provided with the limited step to offset with rotating prevention sleeve bottom, the valve deck
It is correspondingly arranged on the auxiliary section with anti-rotation chamber screw-thread fit with rotating prevention sleeve, the auxiliary section is with respect to valve rod axial direction and rotating prevention sleeve
Between pressure be equipped with anti-rotation sealing element.
2. shut-off valve is welded at middle part according to claim 1, it is characterised in that：The valve deck is extended from top to bottom
It includes valve stem nut and handwheel, valve stem nut rotation to have bending interconnecting piece and operation mounting portion, the operating mechanism
It is set to operation mounting portion and coordinates with threaded stem, the handwheel driving stem nut rotation, the valve stem nut position
Operation mounting portion bottom is provided with limiting section, the handwheel is located above operation mounting portion and periphery and handwheel inner circumferential are in flower
Key coordinates, and the valve stem nut, which is located above handwheel, is provided with the lock nut that handwheel is limited in valve stem nut, described
Lock nut and valve stem nut be located at cooperation be respectively arranged with it is anti-error tear notch open, the lock nut and valve stem nut are prevented
Accidentally tear open notch combination constitute it is anti-error tear bolt hole open, it is described it is anti-error tear open to be provided in bolt hole anti-error tear bolt open.
3. shut-off valve is welded at middle part according to claim 1, it is characterised in that：The valve deck is provided with to be passed through for valve rod
Via, be provided with packing cavity at the top of the via, be provided with filler in the packing cavity, setting above the valve deck
There are the valve deck fixing piece that valve deck is fixed on by filler pressure set on the gland of packing cavity and by gland, the filler pressure
Pressure is equipped with pressing sleeve between lid and filler, and the pressing sleeve is sheathed on stem outer circumference, and the pressing sleeve upper end is provided with extruding guiding
Face, the extruding guide surface are continuously decreased with far from pressing sleeve upper surface centre-height, and the gland is provided with for valve
The edge of the through-hole that bar passes through, the via bottoms is provided with extrusion fit face compatible with guide surface shape is squeezed.
4. shut-off valve is welded at middle part according to claim 1, it is characterised in that：The valve deck be located at at valve body cooperation
It is provided with ecto-entad and is equipped with the first welding surface and multistage positioning step, first welding surface is with far from bonnet central height
It gradually increases, the valve body is correspondingly arranged on multistage compatible with multistage positioning step shape with multistage positioning step and coordinates
Step, the valve body is provided with the second welding surface that is corresponding with the first welding surface and being welded and fixed with the first welding surface, described
The second welding surface continuously decreased with far from valve body centre-height.
5. shut-off valve is welded at middle part according to claim 1, it is characterised in that：The runner is distinguished with respect to flap both sides
It is provided with the first branch and the second branch respectively with extraneous unicom, first branch gradually rises with close to flap height
Height, second branch take the shape of the letter U shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721812692.5U CN207796099U (en) | 2017-12-22 | 2017-12-22 | Weld shut-off valve in middle part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721812692.5U CN207796099U (en) | 2017-12-22 | 2017-12-22 | Weld shut-off valve in middle part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207796099U true CN207796099U (en) | 2018-08-31 |
Family
ID=63280830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721812692.5U Active CN207796099U (en) | 2017-12-22 | 2017-12-22 | Weld shut-off valve in middle part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207796099U (en) |
-
2017
- 2017-12-22 CN CN201721812692.5U patent/CN207796099U/en active Active
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