CN202708138U - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN202708138U CN202708138U CN 201220361377 CN201220361377U CN202708138U CN 202708138 U CN202708138 U CN 202708138U CN 201220361377 CN201220361377 CN 201220361377 CN 201220361377 U CN201220361377 U CN 201220361377U CN 202708138 U CN202708138 U CN 202708138U
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- CN
- China
- Prior art keywords
- valve
- hole
- valve rod
- rod
- flap
- 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 stop valve. The stop valve comprises a valve body, a valve deck, a valve rod and a valve clack, wherein the valve body comprises a through hole; the through hole comprises an upper through hole, a lower through hole and a stop hole; the valve deck comprises a valve rod hole; the valve body and the valve deck form a valve chamber; the valve rod penetrates through the valve rod hole; the top of the valve rod is positioned outside the valve chamber; the bottom of the valve rod is positioned in the valve chamber and connected with the valve clack; the bottom of the valve rod and the top of the valve clack are provided with a connecting device; the connecting device comprises a valve clack cover and a split ring; the top of the valve clack comprises a valve rod chamber, a first ladder and a valve rod chamber female thread; the bottom of the valve rod is provided with a valve rod groove; the valve clack cover comprises a male thread and is screwed up with the valve rod chamber female screw; a groove is formed between a lower edge of the valve clack cover and a step surface of the first ladder; and the split ring is arranged in space formed by the groove and the valve rod groove. By the stop valve, the requirement on the axial alignment precision of the stop hole of the valve body and the valve rod hole of the valve deck is reduced, so that a rejection rate is reduced.
Description
Technical field
The utility model relates to a kind of stop valve.
Background technique
So various fields such as stop valve extensive use oil, chemical industry.Its advantage is: simple in structure, make and keep in repair more convenient.The keying stroke is short, opens and closes the time that needs short.Good airproof performance, friction is little between sealing surface, and the life-span is longer.The frictional force of sealing surface is less than gate valve in the switching process, and is wear-resisting.Usually only have a sealing surface, manufacturing process is good, is convenient to maintenance.Valve rod and the flap of conventional stop valve are connected as a single entity, and the axial needs between the valve rod hole of the cut-off hole of valve body and valve gap are had very high production precision, and this causes processing difficulties, and the reject rate in the production is also higher simultaneously.
Summary of the invention
Problem to be solved in the utility model: under the prior art, the axial needs between cut-off hole and the valve rod hole have very high making precision, cause processing difficulties, the problem that reject rate is very high.
For addressing the above problem, scheme of the present utility model is:
A kind of stop valve comprises valve body, valve gap, valve rod and flap.Valve body comprises through hole, and through hole comprises through hole, lower through-hole and cut-off hole.Valve gap comprises valve rod hole.Valve body and valve gap surround valve pocket.Valve rod passes valve rod hole, and the top is outside valve pocket, and the bottom is in valve pocket, and the bottom links to each other with flap.Separable between valve rod and the flap, that is, valve rod and flap are respectively independently component.The bottom of valve rod and flap top comprise connection set.The structure of connection set is as follows:
Connection set comprises: valve clack cover, and to Katyuan ring, the flap top comprises valve-rod cavity, the first ladder, valve-rod cavity internal thread, the bottom of valve rod comprises stem groove.Described valve clack cover comprises outside thread, screws up with the valve-rod cavity internal thread.Consist of groove between the lower edge of valve clack cover and the step surface of the first ladder.In the described space that Katyuan ring is shelved on groove and stem groove composition.Further, connection set can also comprise the second ladder, and the second ladder is used for shelving valve clack cover, avoids valve clack cover directly to push down Katyuan is encircled.
Comprise seal arrangement between valve rod and the valve gap: comprise seal groove between the valve rod hole inwall of valve rod and valve gap, Sealing is installed in the seal groove.Seal groove can be positioned on the valve rod, also can be positioned on the valve gap.The utility model preferentially is arranged on seal groove on the valve rod.The quantity of seal groove also can have a plurality of.O-ring seals can be installed as Sealing in the seal groove, also can adopt O-ring seals to add the form of back-up ring.The preferential scheme that adopts of the utility model is: place two O-ring seals and two back-up rings, two O-ring seals and two alternate placements of back-up ring in a seal groove, seal groove.
Technique effect of the present utility model:
1, be that non-stationary axle is to being connected between the stop valve of the present utility model, valve rod and flap.Be flap with valve rod between axially be not to aim at fully, can a little preferentially be offset.This is so that when processing valve gap and valve body, and the cut-off hole between valve body upper channel and the lower channel axially axially allows deviation in a small amount with the valve rod hole of valve gap, and this deviation can remedy by the axial deviation between change flap and the valve rod.This is so that stop valve of the present utility model has larger elasticity when maintenance.If the wearing and tearing of the cut-off hole of valve body under prior art, can only be changed valve body.And under technology of the present utility model, even cut-off some wearing and tearing of hole also have no relations.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation.Wherein, 1 is valve body, and 2 is valve gap, and 3 is spool, and 4 is valve pocket, 10 is through hole, and 11 is upper through hole, and 12 is lower through-hole, and 13 are the cut-off hole, and 21 is valve rod hole, 22 is the screw hole of valve gap, and 23 is the screw hole of valve body, and 32 is valve rod, and 33 is flap, and 36 is the sealing surface of flap.
Fig. 2 is flap and the valve rod linkage structure schematic diagram among the utility model embodiment 2.Wherein 32 is valve rod, and 33 is flap, and 60 is valve clack cover, and 61 is that 62 is the valve-rod cavity of flap to Katyuan ring, and 63 is the first ladder, and 65 is the groove that valve clack cover and the first ladder surround, and 66 is stem groove.
Fig. 3 is flap and the valve rod linkage structure schematic diagram among the utility model embodiment 3.Wherein 32 is valve rod, and 33 is flap, and 60 is valve clack cover, and 61 is that 62 is the valve-rod cavity of flap to Katyuan ring, and 63 is the first ladder, and 64 is the second ladder, and 65 is the groove that valve clack cover and the first ladder surround, and 66 is stem groove.
Fig. 4 is the structural representation of the second seal groove among the utility model embodiment 4.Among the figure, 2 is valve gap, and 21 is valve rod hole, and 24 is valve rod hole top, and 25 is the valve rod hole bottom, and 32 is valve rod, and 51 is seal groove, and 70 is the O RunddichtringO, and 71 is back-up ring, and 72 is protuberance on the valve rod, and 73 is protuberance under the valve rod.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
Embodiment 1
A kind of stop valve as shown in Figure 1, comprises valve body 1, valve gap 2, valve rod 32, flap 33.Valve body comprises through hole 10, and through hole 10 comprises through hole 11, lower through-hole 12 and cut-off hole 13.Cut-off hole 13 is between upper through hole 11 and lower through-hole 12.Valve gap 2 comprises valve rod hole 21.Valve rod hole 21 axially with end the axial consistent of hole 13.Valve body 1 and valve gap 2 surround valve pocket 4.Valve rod 32 passes valve rod hole 21, and the top is outside valve pocket 4, and the bottom is in valve pocket 4.Handwheel or spanner or Electric actuator can be installed in the top.The bottom of valve rod 32 links to each other with flap 33.Valve rod 32 and flap 33 by be two independently component assemble, that is, valve rod 32 is separable with flap 33.Connection set between valve rod 32 and the flap 33.The bottom of flap 33 is taper shape or frustoconic shape or semicircular sealing surface 36, and its size can seal cut-off hole 13.
Valve rod 32 comprises outside thread 55, and the valve rod hole 21 of valve gap 2 comprises internal thread, screws up by the outside thread of valve rod 32 and the internal thread on the valve rod hole 21 between valve rod 32 and the valve gap 2.When the handwheel of installing by the top when valve rod 32 or spanner rotated, flap 33 was along axial rising or the decline of cut-off hole 13 with valve rod hole 21, thereby realized the opening and closing of valve.
With reference to embodiment 1, on embodiment 1 basis, as shown in Figure 1 and Figure 2, valve rod 32 and flap 33 be two independently component assemble, that is, valve rod 32 is separable with flap 33.Include connection set between the top of valve rod 32 bottoms and flap 33.This connection set comprises: valve clack cover 60, and to Katyuan ring 61, flap 33 tops comprise valve-rod cavity 62, the first ladder 63, valve-rod cavity internal thread, the bottom of valve rod 32 comprises stem groove 66.Valve clack cover 60 comprises outside thread, and valve-rod cavity 62 comprises internal thread.Valve clack cover 60 and valve-rod cavity 62 screw up by screw thread.The first ladder 63 refers to that the inner diameter stepped change from bottom to top of valve-rod cavity 62 is large as shown in Figure 3, and this shows as step-like at cross section, can see step surface on the horizontal plane.The lower edge of the inwall of the step surface of the first ladder and valve-rod cavity 62 and valve clack cover 60 consists of groove 65.The position of groove 65 is relative with the position of stem groove 66, and both surround the cavity of a ring-type, and Katyuan ring 61 is shelved in this cavity.Different with the Placement of plain bolt, be that non-stationary axle is to being connected between valve rod 32 and the flap 33.Be flap 33 with valve rod 32 between axially be not to aim at fully, can a little preferentially be offset.This is so that when processing valve gap 2 and valve body 1, cut-off hole 13 between valve body 1 upper channel 11 and the lower channel 12 axially with the valve rod hole 21 of valve gap 2 axially allow deviation in a small amount, this deviation can remedy by the axial deviation between change flap 33 and the valve rod 32.
Embodiment 3
Improvement as embodiment 2, on embodiment 2 basis, further comprise the second ladder 64, as shown in Figure 4, the second ladder 64 is used for shelving valve clack cover 60, and when valve clack cover 60 was tightened, the existence of the second ladder 64 can avoid valve clack cover 60 directly to push down Katyuan ring 61, this structure is in order to adapt to the size to Katyuan ring 61, and restriction is to the slip of Katyuan ring 61.
Embodiment 4
With reference to embodiment 1, on embodiment 1 basis, with reference to embodiment 1, on embodiment 1 basis, include seal arrangement between valve rod and the valve rod hole wall.The sealing device comprises seal groove 51 as shown in Figure 7.Seal groove 51 is positioned on the valve rod 32, comprises Sealing in it.Sealing is by be made of two O-ring seals 70 and two back-up ring 71 alternate placements two O-ring seals 70 and two back-up ring 71.Seal groove 51 is surrounded by the upper protuberance 72 on the valve rod 32 and lower protuberance 73.Upper protuberance 72 and lower protuberance 73 and seal groove 51 all are positioned at valve rod hole 21.Valve rod hole 21 is positioned at valve gap 2, is divided into top 24 and bottom 25, and its top includes internal thread, and is corresponding with the outside thread on the valve rod.The diameter of valve rod hole 21 bottoms 25 is larger than top 24, this so that the upper protuberance 72 of valve rod 32 except surrounding the effect of seal groove 51 with lower protuberance 73, upper protuberance 72 can also avoid valve rod 32 to be pulled out the effect of valve pocket.
The structure of the two O-ring seals 70 of the same employing of the seal ring of the present embodiment and two back-up rings 71 is in order to be applicable to high pressure conditions.If equipment of the present utility model is used for low pressure, as the alternative form of the present embodiment, independent O-ring seals or single O-ring seals 70 and the single back-up ring 71 of usefulness in the seal groove all meets spirit of the present utility model.
Further, the second replacement form of the present embodiment is upper protuberance 72 or the lower protuberance 73 same outside threads that include, accordingly, the inwall of the bottom of valve rod hole 21 comprises internal thread too, and the internal thread of the outside thread on upper protuberance 72 and the lower protuberance and the lower inner wall of valve rod hole 21 forms the ripple sealing.Further strengthen sealing effect.
Claims (4)
1. a stop valve comprises valve body (1), valve gap (2), valve rod (32) and flap (33); Valve body comprises through hole (10); Through hole (10) comprises through hole (11), lower through-hole (12) and cut-off hole (13); Valve gap (2) comprises valve rod hole (21); Valve body (1) and valve gap (2) surround valve pocket (4); Valve rod (32) passes valve rod hole (21), and the top is outside valve pocket (4), and the bottom is in valve pocket (4), and the bottom links to each other with flap (33); It is characterized in that, separable between described valve rod (32) and the flap (33); The bottom of valve rod (32) and flap (33) top comprise connection set.
2. stop valve as claimed in claim 1, it is characterized in that, described connection set comprises: valve clack cover (60), Katyuan ring (61), flap (33) top are comprised valve-rod cavity (62), the first ladder (63), valve-rod cavity internal thread, the bottom of valve rod (32) comprises stem groove (66); Described valve clack cover (60) comprises outside thread, screws up with the valve-rod cavity internal thread; Consist of groove (65) between the step surface of the lower edge of valve clack cover (60) and the first ladder (63); Described Katyuan ring (61) is shelved in the space that groove (65) and stem groove (66) form.
3. stop valve as claimed in claim 2 is characterized in that, described connection set also comprises the second ladder (64), and valve clack cover (60) is shelved on the step surface of the second ladder (64).
4. stop valve as claimed in claim 1, it is characterized in that, comprise seal groove (51) between described valve rod (32) and valve rod hole (21) inwall, seal groove (51) is positioned on the valve rod (32), seal groove comprises Sealing in (51), Sealing is by be made of two O-ring seals and two alternate placement of back-up ring two O-ring seals and two back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361377 CN202708138U (en) | 2012-07-25 | 2012-07-25 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361377 CN202708138U (en) | 2012-07-25 | 2012-07-25 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708138U true CN202708138U (en) | 2013-01-30 |
Family
ID=47588444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361377 Expired - Fee Related CN202708138U (en) | 2012-07-25 | 2012-07-25 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322219A (en) * | 2013-07-05 | 2013-09-25 | 昆山维萨阀门有限公司 | Stop valve capable of preventing valve clack from rotating |
| CN110748313A (en) * | 2019-10-28 | 2020-02-04 | 锦州清华机械有限公司 | Wireless self-orienting hydraulic integrated windowing sidetrack drilling tool |
-
2012
- 2012-07-25 CN CN 201220361377 patent/CN202708138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322219A (en) * | 2013-07-05 | 2013-09-25 | 昆山维萨阀门有限公司 | Stop valve capable of preventing valve clack from rotating |
| CN110748313A (en) * | 2019-10-28 | 2020-02-04 | 锦州清华机械有限公司 | Wireless self-orienting hydraulic integrated windowing sidetrack drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150725 |
|
| EXPY | Termination of patent right or utility model |