CN202852039U - Double-eccentric ball valve - Google Patents
Double-eccentric ball valve Download PDFInfo
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- CN202852039U CN202852039U CN2012202687039U CN201220268703U CN202852039U CN 202852039 U CN202852039 U CN 202852039U CN 2012202687039 U CN2012202687039 U CN 2012202687039U CN 201220268703 U CN201220268703 U CN 201220268703U CN 202852039 U CN202852039 U CN 202852039U
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- valve
- valve shaft
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- double
- eccentric
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Abstract
The utility model discloses a double-eccentric ball valve which comprises a switch, a worm wheel box, a valve body and a valve core, wherein the worm wheel box is in connection with the switch, and the valve core is installed in the valve body. The double-eccentric ball valve is characterized by further comprising an upper valve shaft component and a lower valve shaft component, wherein the upper end of the upper valve shaft component is connected with the worm wheel box, the lower end of the upper valve shaft component is connected with the valve core, the upper end of the lower valve shaft component is connected with the valve core, and the lower portion of the lower valve shaft component is fixed on an end cover. The valve core is in a double-valve-clack ball shape which is composed of a left valve core and a right valve core. A tightly caved alloy structure in which eccentric cams are contacted is adopted for sealing of the valve core. A soft-hard combined structure is adopted for sealing of the upper valve shaft component and the lower valve shaft component. The double-eccentric ball valve has the advantages of being simple in structure, wide in adaptability, good in sealing performance and the like.
Description
Technical field
The utility model relates to a kind of valve, and especially a kind of use of good airproof performance is at the more abominable double-eccentric ball valve of environment.
Background technique
At present, in pipeline, work the ball valve kind of blocking medium a lot, double eccentric half ball valve is exactly wherein a kind of, it is applicable to the media such as liquid, gas or slagging-off in control and the conveying of conveyance conduit, Main Function is flowing velocity and the direction of cutting off, distribute and change medium in pipeline, the closure member of double eccentric half ball valve is a hemisphere, spheroid is done rotation around the valve body center line and is reached the purpose of opening or closing, it is widely used in iron and steel, water power, sugaring, paper industry, municipal water supply, sewage treatment etc. occasion, and effect is also fine.At present, the sealing of eccentric half-ball valve generally has hard sealed eccentric ball valve and soft seal eccentric half-ball valve, and the sealing of hard seal eccentric semi ball valve is metal to metal, and the mutual friction of phase-contact surface meeting phase makes to be sealed with certain leakage after long-time the use; The sealing of soft seal eccentric half-ball valve is metal pair rubber, the mutual friction of phase-contact surface phase is less after long-time the use, but because the durability of rubber is not high, and its structure is complicated, installation and maintenance are inconvenient, so many people have made some improvements the sealing of double eccentric half ball valve, open source literature has also been reported some, as:
1. Chinese patent: Double-eccentric semispherical, application number: CN200620032591.1, the applying date: 2006.09.21, open day of publication number: CN200952581: 2007.09.26, claimant: Wang Weiguo, address: No. 69, section industrial region, Zhengzhou City Henan Province Shangjie District eastern suburb, inventor: Wang Weiguo, summary: disclose a kind of Double-eccentric semispherical, comprise valve body, be arranged in the body cavity hemisphere flap by the valve rod driven rotary, and be embedded on the valve port of valve body inner peripheral surface, the metal o-ring that cooperates with the semispherical valve flap seal; On described metal o-ring outer circumferential face, be set with adjusting nut with thread fiting mode.This model utility advantage is to be sleeved on adjusting nut on the described metal o-ring outer circumferential face with thread fiting mode, therefore when assembling, can make metal o-ring along valve body horizontal axis move left and right by the rotation adjusting nut, add the accumulated error in man-hour with compensation metal o-ring, hemisphere flap, reaching the optimal seal effect.This just greatly reduces the requirement on machining accuracy to metal o-ring, hemisphere flap, thereby has reduced cost of production, has improved simultaneously production, efficiency of assembling.When because wearing and tearing when causing between hemisphere flap and the metal o-ring seal failure, can recover sealing by adjusting nut again.
2. Chinese patent: all press double eccentric half ball valve; application number: CN200620127428.3; the applying date: 2006.08.23, publication number: CN200955602, open day: 2007.10.03; claimant: Sun Guang; the address: the From Shijiazhuang City of Hebei Province Yuhua District is talked Golden Horse residential quarter, the Gu Nan street garden 16-1-301 that rises, inventor: Sun Guang, summary: a kind of double eccentric half ball valve of all pressing; belong to valve technology field, be used for improving the problem of sealability.Its technological scheme is: it is comprised of housing, gland, spool, valve seat, gland, spool, valve seat are installed in the housing, the hemisphere valve face of spool contacts with the sealing surface of valve seat, gland is pressed in the top of valve seat, after the improvement, the surface of contact between gland and valve seat top has increased elastic washer.Elastic washer in this model utility can make the hemisphere valve face of spool and the sealing surface of valve seat remain close contact, and the pressure of spool and valve base chamber is evenly distributed, and has increased the reliability of sealing.This structure has also reduced the wearing and tearing between hemisphere valve face and the sealing surface of seat, is conducive to prolong product working life.
But, long-term practice through the inventor, although find above disclosed document some improvement have all been carried out in structure and the sealing of valve, but also there are some defectives, to come making metal o-ring along valve body horizontal axis move left and right by the adjusting nut on the metal o-ring outer circumferential face such as open source literature 1, with compensation metal o-ring, the hemisphere flap purpose in the accumulated error that adds man-hour, this complicated structure, and after the wear extent of metal o-ring was large, adjusting nut had just lost meaning; Document 2 increases by an elastic washer at spool and valve base chamber makes the hemisphere valve face of spool and the sealing surface of valve seat remain close contact; but the ball valve of this structure can not be useful under the comparison rugged environment and work; particularly in the environment that fouling easily occurs, use; complicated as using when ball valve at the more abominable sewage treatment of environment, sugaring, petrochemical industry and paper industry industry medium composition; especially shape of medium is particle or under mordant environment sometimes; this elastic washer ratio is easier to be worn or corrode; in addition, because spool is half spheroid.Therefore, even if adopt the soft and hard seal combination, also can be easy to cause wearing and tearing and leak.So this becomes the difficult problem of the industry always.
Summary of the invention
The technical problems to be solved in the utility model provides and a kind ofly can overcome the deficiencies in the prior art, have simple in structure, good airproof performance, the double-eccentric ball valve of wide adaptability.
The technical solution of the utility model is as follows:
This double-eccentric ball valve, comprise switch, Worm gear case, valve body and spool, Worm gear case is connected with switch, spool is installed in the valve body, is characterized in: it also comprises valve shaft parts and lower valve shaft parts, and the upper end of upper valve shaft parts is connected with Worm gear case, the lower end is connected with spool, the upper end of lower valve shaft parts is connected with spool, and the bottom is fixed on the end cap, and described spool adopts left spool and right spool Double-clack spheroid form; The sealing of described spool adopts carving of eccentric cam contact to fit golden structure; The soft or hard combined structure is adopted in the sealing of described upper valve shaft parts and lower valve shaft parts.
Above-described upper valve shaft parts comprise valve shaft, bearing support, gland, graphite packing and stuffing box packing, are provided with graphite packing and stuffing box packing between upper valve shaft and the valve body, and graphite packing and stuffing box packing are fixed on the upper valve shaft by gland.
Above-described lower valve shaft parts comprise lower valve shaft, bearing support, gland, graphite packing and stuffing box packing, are provided with graphite packing and stuffing box packing between lower valve shaft and the valve body, and graphite packing and stuffing box packing are fixed on the lower valve shaft by gland.
Substantive distinguishing features of the present utility model and progress are:
1. simple in structure, wide adaptability.Of the present utility model pair of eccentric valve, spool adopts left spool and right spool Double-clack spheroid form, to improve according to the valve body of working under the fluid operating mode especially severe environmental conditions to complex fluid, the Double-clack of this spool not only can play the effect that Open valve is imported and exported, about between also can seal with the tight structure of carving of its eccentric cam contact, do not need to increase any sealing pair, ball valve is not being affected in the flow situation, alleviated the weight of valve, simple in structure, make than being easier to and realize, production procedure is simple, saved cost, this ball valve not only can be widely used in iron and steel, water power, sewage treatment, sugaring, the occasions such as municipal water supply and urban heating heat supply especially are fit to be used in sewage treatment, sugaring, petrochemical industry and paper already wait under the environment comparison mal-condition and work.
2. good seal performance.The sealing configuration that adopts soft or hard to combine between the upper valve shaft of this ball valve and lower valve shaft and the valve body, spool is to carve the tightening seal principle according to camshaft, adopted carving that the Double-clack eccentric cam contacts to fit golden sealing configuration to left spool and right spool, the import and export good sealing effect of valve port, overcome plain triple valve poorly sealed, the defective of bad adaptability, a leakage difficult problem that had both solved the temperature (heat insulation) of valve and wear-resisting variation and produced, improved again the durability of ball valve, avoid valve to disassemble maintenance and maintenance every year, alleviated greatly workman's labor intensity.
Description of drawings
Fig. 1 is the main TV structure simplified schematic diagram of the utility model double-eccentric ball valve.
Fig. 2 is the left TV structure simplified schematic diagram of Fig. 1.
Fig. 3 is the plan structure simplified schematic diagram of Fig. 1.
Fig. 4 is that left valve port 9 and the left spool 10 of Fig. 3 is rotated counterclockwise 90 ° of later plan structure simplified schematic diagram.
Component title and sequence number among the figure:
Switch 1, Worm gear case 2, upper valve shaft 3, bearing support 4, gland 5, graphite packing 6, stuffing box packing 7, valve body 8, left valve port 9, left spool 10, lower valve shaft 11, end cap 12, right spool 13, right valve port 14, rear valve port 15.
Embodiment
Below in conjunction with drawings and Examples structure of the present utility model is described.
As shown in Figure 1, double-eccentric ball valve of the present utility model, comprise switch 1, Worm gear case 2, upper valve shaft 3, bearing support 4, gland 5, graphite packing 6, stuffing box packing 7, valve body 8, left valve port 9, left spool 10, lower valve shaft 11, end cap 12, right spool 13, right valve port 14 and rear valve port 15, switch 1 is connected connection with Worm gear case, left spool 10 and right spool 13 are installed in the valve body 8, valve body 8 total left valve ports 9,15 3 import and export of right valve port 14 and rear valve port, the upper end of valve body 8 is connected with upper valve shaft 3, the lower end of valve body 8 is connected with lower valve shaft 11, be provided with graphite packing 6 and stuffing box packing 7 between upper valve shaft 3 and the valve body 8, graphite packing 6 and stuffing box packing 7 are fixed on the upper valve shaft 3 by gland 5, are connected by bearing support 4 between gland 5 and the Worm gear case 2; Be provided with graphite packing 6 and stuffing box packing 7 between lower valve shaft 11 and the valve body 8, graphite packing 6 and stuffing box packing 7 are fixed on the lower valve shaft 11 by gland 5, and the underpart of lower valve shaft 11 is equipped with end cap 12, are connected by bearing support 4 between gland 5 and the end cap 12.
Working principle:
Double-eccentric ball valve of the present utility model, the one, spool adopts left spool and right spool Double-clack spheroid form.The 2nd, the sealing principle that adopts soft or hard to combine: spool is to adopt carving of Double-clack eccentric cam contact to fit golden hard sealing structure, and the wearing and tearing of spool are by Double-clack eccentric cam auto-compensation, the working life of greatly having improved valve; The sealing configuration that adopts soft or hard to combine between upper valve shaft and lower valve shaft and the valve body, effectively avoided since axle sleeve by erosion medium resistance and the phenomenon of locking.The 3rd, adopt the Double-clack of the switch 1 left spool 10 of control and right spool 13 to rotate to open or close left valve port 9, right valve port 14 and 15 3 import and export of rear valve port, shown in Fig. 1～3, when left valve port 9 is the normal open mouth, right valve port 14 seals, rear valve port 15 is unimpeded, valve port 15 after ducted medium is flowed into by left valve port 9; Left spool 10 and right spool 13 are rotated counterclockwise after 90 °, as shown in Figure 4, when left valve port 9 is unimpeded, 15 sealings of rear valve port, right valve port 14 is unimpeded, and ducted medium flows into right valve port 14 by left valve port 9.
Embodiment 1
In January, 2012, sugar refinery, Liuzhou uses this double-eccentric ball valve in sugar refining technology.Medium in this sugar refinery manufacture process is mainly syrup and steam (with sugar, as to boil sugar, material), and the environmental condition temperature that ball valve uses is high, and excursion is large; Shape of medium is particle sometimes, sometimes be liquid, sometimes be two phase flow, on probation through this sugar refinery 3 months, this double-eccentric ball valve has reached the requirement of Environmental Conditions fully, the leakage problem that has solved the temperature (heat insulation) of valve and wear-resisting variation and produced, and after pressing the season stopping production, ball valve is carried out overhaul and find, the valve seal position is without any wearing and tearing, still can continue to use, this valve has really reached the characteristics safeguarding and exempt to maintain of avoiding, than the Service life that originally used eccentric ball valve on the market more than five times, also solve simultaneously sugar refinery and will disassemble the shortcoming of changing the three-way valve sealing gasket every year, greatly saved the labour force, reduced cost of production.
Claims (3)
1. double-eccentric ball valve, comprise switch (1), Worm gear case (2), valve body (8) and spool, Worm gear case (2) is connected with switch (1), spool is installed in the valve body (8), it is characterized in that: it also comprises valve shaft parts and lower valve shaft parts, the upper end of upper valve shaft parts is connected with Worm gear case (2), the lower end is connected with spool, the upper end of lower valve shaft parts is connected with spool, the bottom is fixed on the end cap (12), and described spool adopts left spool (10) and right spool (13) Double-clack spheroid form; The sealing of described spool adopts carving of eccentric cam contact to fit golden structure; The soft or hard combined structure is adopted in the sealing of described upper valve shaft parts (3) and lower valve shaft parts (11).
2. double-eccentric ball valve according to claim 1, it is characterized in that: described upper valve shaft parts comprise valve shaft (3), bearing support (4), gland (5), graphite packing (6) and stuffing box packing (7), be provided with graphite packing (6) and stuffing box packing (7) between upper valve shaft (3) and the valve body (8), graphite packing (6) and stuffing box packing (7) are fixed on the upper valve shaft (3) by gland (5).
3. double-eccentric ball valve according to claim 1, it is characterized in that: described lower valve shaft parts comprise lower valve shaft (11), bearing support (4), gland (5), graphite packing (6) and stuffing box packing (7), be provided with graphite packing (6) and stuffing box packing (7) between lower valve shaft (11) and the valve body (8), graphite packing (6) and stuffing box packing (7) are fixed on the lower valve shaft (11) by gland (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202687039U CN202852039U (en) | 2012-06-08 | 2012-06-08 | Double-eccentric ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202687039U CN202852039U (en) | 2012-06-08 | 2012-06-08 | Double-eccentric ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852039U true CN202852039U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202687039U Expired - Fee Related CN202852039U (en) | 2012-06-08 | 2012-06-08 | Double-eccentric ball valve |
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| Country | Link |
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| CN (1) | CN202852039U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370909A (en) * | 2014-09-02 | 2016-03-02 | 刘海亮 | Forced seal valve capable of conducting eccentric double-spherical-angle stroke operation |
| CN109392852A (en) * | 2018-11-12 | 2019-03-01 | 浙江大学 | A kind of macro organism trapping in seabed abyss and gastight sampling device |
| CN113653833A (en) * | 2021-08-24 | 2021-11-16 | 盐城市中海船舶机械制造有限公司 | Improved marine valve and production process thereof |
-
2012
- 2012-06-08 CN CN2012202687039U patent/CN202852039U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370909A (en) * | 2014-09-02 | 2016-03-02 | 刘海亮 | Forced seal valve capable of conducting eccentric double-spherical-angle stroke operation |
| CN109392852A (en) * | 2018-11-12 | 2019-03-01 | 浙江大学 | A kind of macro organism trapping in seabed abyss and gastight sampling device |
| CN109392852B (en) * | 2018-11-12 | 2020-12-15 | 浙江大学 | Seabed deep-well macrobiology trapping and pressure maintaining sampling device |
| CN113653833A (en) * | 2021-08-24 | 2021-11-16 | 盐城市中海船舶机械制造有限公司 | Improved marine valve and production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Liu Xiangyang Document name: Notification to Go Through Formalities of Registration |
|
| 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: 20130403 Termination date: 20150608 |
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| EXPY | Termination of patent right or utility model |