CN207814473U - A kind of hard sealing needle valve - Google Patents
A kind of hard sealing needle valve Download PDFInfo
- Publication number
- CN207814473U CN207814473U CN201820063177.XU CN201820063177U CN207814473U CN 207814473 U CN207814473 U CN 207814473U CN 201820063177 U CN201820063177 U CN 201820063177U CN 207814473 U CN207814473 U CN 207814473U
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- valve
- flap
- valve rod
- deck
- section
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Abstract
The utility model discloses a kind of hard sealing needle valves, and valve deck is threadedly coupled on valve body；Valve rod is threadedly secured in the upper end of the valve deck across clamp nut；Valve rod stretches into valve deck, which is characterized in that in the one section seal section of intermediate setting of valve rod, between seal section and valve deck, sealing is formed, connects flap in the lower end of valve rod, flap is reverse taper, in the lower section of flap, a back taper connected in star is set on valve body, flap is fitted closely with conical socket；In the one section seal section of intermediate setting of valve rod, between seal section and valve deck, hardness sealing is formed；Using the flap of reverse taper, and with the back taper connected in star that is arranged on valve body, form the sealing structure of hardness, solve and have no idea to accomplish under the action of high pressure to seal well, occur to leak between valve rod and valve deck；Valve closes the technical problems such as phenomenon and valve invalidation of not waiting indefinitely.
Description
Technical field
The utility model is related to a kind of valve more particularly to a kind of hard sealing needle valves.
Background technology
In existing technology, especially in the application field of high pressure valve, hard sealing needle valve generally can all be used；
In the application process of hard sealing needle valve, due to the relationship of its structure, have no idea to accomplish very well under the action of Chang Yinwei high pressures
Sealing, leakage sometimes occurs between valve rod and valve deck；Valve occurs sometimes and closes phenomenon of not waiting indefinitely, the extreme feelings having
It under condition, is threadedly coupled since valve rod is used with flap, there is a phenomenon where flaps to fall off under the action of high pressure for meeting, to guide post valve
Door failure, to generate the leakage of bigger, liquid largely leaks between valve rod and valve deck.
Utility model content
The purpose of this utility model is according in place of above-mentioned the deficiencies in the prior art, and the utility model aim is realized a kind of hard
It seals needle valve, including valve body, flap, valve rod, valve deck, clamp nut, is threadedly coupled on the valve body valve deck；
The valve rod is threadedly secured in the upper end of the valve deck across clamp nut；The valve rod stretches into the valve deck,
It is characterized in that, in the one section seal section of intermediate setting of the valve rod, between the seal section and the valve deck, is formed close
Envelope, the connection flap in the lower end of the valve rod, the flap is reverse taper, in the lower section of the flap,
One back taper connected in star is set on the valve body, and the flap is fitted closely with conical socket.
Further, connection screw thread is arranged in one end of the valve rod, flap is connected by connection screw thread, in connection screw thread
Lower section carries out being welded and fixed flap, and a cylinder is arranged among the flap, and the diameter of cylinder is less than at reverse taper
The diameter of flap.
Further, import being set in the left side of the valve body, import connects the first slanted channel being arranged on valve body,
First slanted channel connects the vertical passage that is arranged below the flap, back taper shown in the top connection of vertical passage
Groove；One runner is set above back taper connected in star；Runner connects the second slanted channel；The connection of second slanted channel is arranged in institute
The outlet on the right side for the valve body stated.
Gap between seal section described further and the valve deck is between 0.005mm-0.01mm.
Further, gland is set in the lower section of the clamp nut；In the lower section of gland, the outside of valve rod
Filler is set, Packing seat is set in the lower section of filler；
Further, the filler is the combination of soft graphite braided packing and flexible graphite packing ring.
Further, one handwheel is set in the top of the valve rod；The valve rod passes through handwheel and a gasket and with one
Nut is fixed.
The utility model has technical effect that:
In the one section seal section of intermediate setting of valve rod, between seal section and valve deck, hardness sealing is formed；Using reverse taper
Flap, and with the back taper connected in star that is arranged on valve body, form the sealing structure of hardness, can be suitable in this way in high-pressure fluid
Application under situation；It solves and has no idea to accomplish under the action of high pressure to seal well, valve rod occurs for leakage sometimes
Between valve deck；Valve pass occurs sometimes not wait indefinitely phenomenon, under some extreme cases, since valve rod and flap use screw thread
Connection, there is a phenomenon where flaps to fall off under the action of high pressure for meeting, so as to cause valve invalidation, to generate the leakage of bigger,
The technical issues of liquid largely leaks between valve rod and valve deck.
Description of the drawings
Fig. 1 is the vertical view of the utility model.
Fig. 2 is the enlarged drawing at A.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In conjunction with attached drawing 1, a kind of hard sealing needle valve, including valve body 1, flap 2, valve rod are disclosed in 2 the present embodiment of attached drawing
3, valve deck 4, clamp nut 8, the threaded connection valve deck 4 on valve body 1；Valve rod 3 is threadedly secured in valve deck 4 across clamp nut 8
Upper end；Valve rod 3 stretches into valve deck 4, in the one section seal section 31 of intermediate setting of valve rod 3, between seal section 31 and valve deck 4, is formed
Sealing connects flap 2 in the lower end of valve rod 3, flap 2 is arranged to reverse taper, in the lower section of flap 2, is arranged one on valve body 1
Back taper connected in star 101, flap 2 are fitted closely with conical socket 101.Above hard sealing structure, for the stream in high pressure valve
Body applies the one section seal section 31 of intermediate setting in valve rod 1, between seal section 31 and valve deck 4, forms sealing；Using back taper
The flap 2 of body, and with the back taper connected in star 101 that is arranged on valve body 1, form the sealing structure of hardness, can be suitable in this way
Application under the situation of high-pressure fluid；Good sealing function can be played under the action of high-pressure fluid by solving, and be solved
Leakage problem between valve rod 1 and valve deck 4；Also solves the technical issues of valve invalidation simultaneously.
In conjunction with shown in attached drawing 1, attached drawing 2, connection screw thread 32 is set in one end of valve rod 3, passes through 32 connection valve of connection screw thread
Valve 2 carries out being welded and fixed flap 2 in the lower section of connection screw thread 32, and a cylinder 33 is arranged among flap 2, cylinder 33
Diameter is less than the diameter of the flap 2 at reverse taper.Such design is that it is de- to be unlikely to flap 2 when bearing high pressure for flap 2
It falls；Simultaneously because the diameter of cylinder 33 is less than the diameter of the flap 2 at reverse taper, under such situation so that flap 2 can not
The technical issues of being extracted from valve deck 4, having prevented 2 service failure of flap.
Shown in attached drawing 1, import 102 is set in the left side of valve body 1, import 102 connects the be arranged on valve body 1
One slanted channel 103, the first slanted channel 103 connect the vertical passage 104 that is arranged below flap 2, vertical passage 104 it is upper
Side's connection back taper connected in star 101；One runner 105 is set above back taper connected in star 101；Runner 105 connects the second slanted channel
106；The connection of second slanted channel 106 is arranged in the outlet 107 on the right side of valve body 1.
Shown in fig. 1, sealing, the gap between 31 and valve deck 4 is between 0.005mm-0.01mm.In clamp nut
Gland 7 is arranged in 8 lower section；Filler 6 is set in the outside of the lower section of gland 7, valve rod 3, is arranged in the lower section of filler 6
Packing seat 5；The filler 6 is the combination of soft graphite braided packing and flexible graphite packing ring.
Above-mentioned packing seal structure ensure that in the case of hard seal failure, reduce between valve rod 3 and valve deck 4
The possibility of leakage enhances the sealing performance in the utility model.
In conjunction with shown in attached drawing 1, in order to facilitate the opening and closing of valve, one handwheel 9 is set in the top of valve rod 3；Valve rod 3
It is fixed across handwheel 9 and a gasket 11 and with a nut 12.
As the preferred embodiment of the utility model, it is obvious to a person skilled in the art that the utility model is not
It is limited to the details of above-mentioned exemplary embodiment, and without departing substantially from the spirit or essential attributes of the utility model, energy
It is enough to realize the utility model and the scope of protection of the utility model in other specific forms.Which point therefore, no matter come from
It sees, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by appended claims
Rather than above description limits, it is intended that by all changes that come within the meaning and range of equivalency of the claims capsule
It includes in the utility model.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (7)
1. a kind of hard sealing needle valve, including valve body, flap, valve rod, valve deck, clamp nut, the screw thread company on the valve body
Connect the valve deck；The valve rod is threadedly secured in the upper end of the valve deck across clamp nut；The valve rod stretches into institute
In the valve deck stated, which is characterized in that in the one section seal section of intermediate setting of the valve rod, the seal section and the valve
Between lid, sealing is formed, the connection flap in the lower end of the valve rod, the flap is reverse taper, described
The lower section of flap, is arranged a back taper connected in star on the valve body, and the flap is fitted closely with conical socket.
2. a kind of hard sealing needle valve as described in claim 1, which is characterized in that one end setting connection spiral shell of the valve rod
Line connects flap by connection screw thread, carries out being welded and fixed flap below connection screw thread, be arranged among the flap
One cylinder, the diameter of cylinder are less than the diameter of the flap at reverse taper.
3. sealing needle valve as described in claim 1 a kind of hard, which is characterized in that the left side of the valve body be arranged into
Mouthful, import connects the first slanted channel being arranged on valve body, and the connection of the first slanted channel is arranged below the flap
Vertical passage, vertical passage top connection shown in back taper connected in star；One runner is set above back taper connected in star；Runner connects
Connect the second slanted channel；The connection of second slanted channel is arranged in the outlet on the right side of the valve body.
4. sealing needle valve as described in claim 1 a kind of hard, which is characterized in that the seal section and the valve deck it
Between gap between 0.005mm-0.01mm.
5. a kind of hard sealing needle valve as described in claim 1, which is characterized in that be arranged in the lower section of the clamp nut
Gland；Filler is set in the outside of the lower section of gland, valve rod, Packing seat is set in the lower section of filler.
6. a kind of hard sealing needle valve as claimed in claim 5, which is characterized in that the filler is that soft graphite braiding is filled out
The combination of material and flexible graphite packing ring.
7. a kind of hard sealing needle valve as claimed in claim 2, which is characterized in that be arranged on the other hand in the top of the valve rod
Wheel；The valve rod passes through handwheel and a gasket and is fixed with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820063177.XU CN207814473U (en) | 2018-01-15 | 2018-01-15 | A kind of hard sealing needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820063177.XU CN207814473U (en) | 2018-01-15 | 2018-01-15 | A kind of hard sealing needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814473U true CN207814473U (en) | 2018-09-04 |
Family
ID=63327269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820063177.XU Active CN207814473U (en) | 2018-01-15 | 2018-01-15 | A kind of hard sealing needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7316010B2 (en) | 2019-12-31 | 2023-07-27 | 浙江大学 | VALVE SEALING STRUCTURE AND METHOD FOR WEAR REDUCTION |
-
2018
- 2018-01-15 CN CN201820063177.XU patent/CN207814473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7316010B2 (en) | 2019-12-31 | 2023-07-27 | 浙江大学 | VALVE SEALING STRUCTURE AND METHOD FOR WEAR REDUCTION |
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