CN204164408U - A kind of ball valve for ultrafine dust - Google Patents
A kind of ball valve for ultrafine dust Download PDFInfo
- Publication number
- CN204164408U CN204164408U CN201420586254.1U CN201420586254U CN204164408U CN 204164408 U CN204164408 U CN 204164408U CN 201420586254 U CN201420586254 U CN 201420586254U CN 204164408 U CN204164408 U CN 204164408U
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- Prior art keywords
- valve
- seat
- dust
- ultrafine dust
- auxiliary
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Abstract
The utility model is a kind of ball valve for ultrafine dust, comprise valve body and the bonnet of integral type shaping, and integrally formed lower shaft, valve rod and spheroid, on described valve rod, cover has valve stem sleeve, on described lower shaft, cover has lower shaft axle sleeve, main valve seat is provided with between described bonnet and described spheroid, described valve body, bonnet, valve lumen is formed between spheroid and main valve seat, the auxiliary-seat consistent with its shape is provided with in described valve lumen, dust ring and upper gasket is provided with between described valve stem sleeve and described auxiliary-seat, lower dust ring and lower gasket is provided with between described lower shaft axle sleeve and described auxiliary-seat.The utility model is used for the ball valve of ultrafine dust, prevents ultrafine dust from entering valve lumen and gap between valve rod and axle sleeve by arranging auxiliary-seat, dust ring and packing ring, reduces the probability that break down of ball valve in ultrafine dust operating mode.
Description
[technical field]
The utility model relates to valve field, particularly relates to a kind of ball valve for ultrafine dust, for polyethylene in MTO methanol-to-olefins device, polypropylene powder or for coal lock hopper in Coal Chemical Industry system and grey lock hopper workshop section.
[background technique]
In MTO methanol-to-olefins device and Coal Chemical Industry SCGP device, the medium of some workshop section is ultrafine dust, and these powder have that granularity is little, hardness is high and the feature such as poor fluidity.Bite and cannot the problem such as switch is easily there is after prior art ultrafine dust ball valve long-play.Valve, once after there are these problems, must roll off the production line and keep in repair, and because maintenance of valve needed time is longer, and replaces new valve costly, the system shutdown caused because of these problems, brings no small loss to coal chemical industry enterprises.
In common valve structure of the prior art, as shown in Figure 4, valve lumen 3 is gaps between the inwall and protocorm body 205 of former valve body 201, former bonnet 202, valve lumen 3 is hollow, valve is in switching process, and powder enters valve lumen by gap between former valve seat 206 and protocorm body 205, and these ultrafine dust mobility are poor, long-time stop or easily lump after making moist, then a large amount of viscous is on protocorm surface 205 and former valve body 201, former bonnet 202 inwall; Along with the powder piled up gets more and more, whole valve lumen 3 will be filled up by these powder, last protocorm body 205 is completely wrapped in inside powder, now, protocorm body 205 in opening and closing process except the frictional force between former valve seat 206 will be overcome, also to overcome the frictional force between these powder, cause protocorm body 205 driving torque to increase considerably, finally cause valve bite, cannot switch.
In addition, in common valve, gap between former valve stem sleeve 209 and former valve rod 207 is entered in order to prevent ultrafine dust, a place where troops were originally stationed konisphere 208 is provided with bottom former valve stem sleeve 209, but along with the increase of valve switch number of times, place where troops were originally stationed konisphere 208 and former valve stem sleeve 209 constantly rub, the place where troops were originally stationed konisphere 208 of flexible material is worn, and place where troops were originally stationed konisphere 208 does not have automatic compensation sealing feature, thus and gap between former valve rod 207 increasing, when gap is greater than ultrafine dust particle diameter (20-50um), place where troops were originally stationed konisphere 208 has dust reduction capability no longer.After dust ring lost efficacy, powder pierced gap between place where troops were originally stationed konisphere 208 and former valve stem sleeve 209 under the drive of pipeline pressure.These powder are after sum caking is constantly piled in former valve stem sleeve 209 chamber, and the friction factor of former valve rod 207 in rotation process and between former valve stem sleeve 209 constantly increases, and result in former valve rod 207 driving torque and rise; Simultaneously because these powder hardness are high, former valve rod 207 surface is easily caused to be pulled.The problem that former valve stem sleeve 209 is identical with former valve rod 207 is there is between former lower shaft 203 with former lower shaft axle sleeve 204.
Finally, ultrafine dust is made moist after caking, and cohesion is large, if when the coating of protocorm body 205 and basal body binding force are not high, easily makes the coating shedding of protocorm body 205.
[summary of the invention]
The purpose of this utility model is to provide and a kind ofly prevents ultrafine dust from entering valve lumen and the ball valve for ultrafine dust in gap between valve rod and axle sleeve.
The utility model is achieved through the following technical solutions above-mentioned purpose: a kind of ball valve for ultrafine dust, comprise valve body and the bonnet of integral type shaping, and integrally formed lower shaft, valve rod and spheroid, on described valve rod, cover has valve stem sleeve, on described lower shaft, cover has lower shaft axle sleeve, main valve seat is provided with between described bonnet and described spheroid, described valve body, bonnet, valve lumen is formed between spheroid and main valve seat, the auxiliary-seat consistent with its shape is provided with in described valve lumen, dust ring and upper gasket is provided with between described valve stem sleeve and described auxiliary-seat, lower dust ring and lower gasket is provided with between described lower shaft axle sleeve and described auxiliary-seat.
Compared with prior art, the beneficial effect that the utility model is used for the ball valve of ultrafine dust is: the utility model is used for the ball valve of ultrafine dust, preventing ultrafine dust from entering valve lumen and gap between valve rod and axle sleeve by arranging auxiliary-seat, dust ring and packing ring, reducing the probability that break down of ball valve in ultrafine dust operating mode.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial structurtes enlarged view of I in Fig. 1.
Fig. 3 is the stressed schematic diagram of Fig. 2.
Fig. 4 is the structural representation of prior art.
In accompanying drawing, the mark of each parts is as follows: 101, valve body, and 102, lower shaft, 103, bonnet, 104, lower shaft axle sleeve, 105, lower dust ring, 106, lower gasket, 107, auxiliary-seat, 108, spheroid, 109, main valve seat, 110, upper gasket, 111, upper dust ring, 112, valve stem sleeve, 113, valve rod, 201, former valve body, 202, former bonnet, 203, former lower shaft, 204, former lower shaft axle sleeve, 205, protocorm body, 206, former valve seat, 207, former valve rod, 208, place where troops were originally stationed konisphere, 209, former valve stem sleeve, 3, valve lumen.
[embodiment]
Refer to accompanying drawing 1-3, a kind of ball valve for ultrafine dust, comprise valve body 101 and the bonnet 103 of integral type shaping, and integrally formed lower shaft 102, valve rod 113 and spheroid 108, on described valve rod 113, cover has valve stem sleeve 112, on described lower shaft 102, cover has lower shaft axle sleeve 104, main valve seat 109 is provided with between described bonnet 103 and described spheroid 108, described valve body 101, bonnet 103, valve lumen 3 is formed between spheroid 108 and main valve seat 109, the auxiliary-seat 107 consistent with its shape is provided with in described valve lumen 3, dust ring 111 and upper gasket 110 is provided with between described valve stem sleeve 112 and described auxiliary-seat 107, lower dust ring 105 and lower gasket 106 is provided with between described lower shaft axle sleeve 104 and described auxiliary-seat 107, described upper dust ring 111 is positioned at above described upper gasket 110, described lower dust ring 105 is positioned at below described lower gasket 106, described upper dust ring 111 is inclined-plane with the surface of contact of described upper gasket 110, described lower dust ring 105 is inclined-plane with the surface of contact of described lower gasket 106, the angle of described two inclined-planes and horizontal plane is α, above dust ring 111 is example with described upper gasket 110, under valve pocket pressure impetus, the lower surface of the upper dust ring of upper surface extruding of upper gasket, its active force can be analyzed to the radial force of axial force F 11 from the bottom to top and F12 from outside to inside, wherein radial force F12 from outside to inside makes dust ring generation radial deformation, the wearing and tearing that on auto-compensation, dust ring and valve rod produce in the long-term switching process of valve, and formed between valve rod and effectively seal, effectively prevent powder from entering valve rod and valve stem sleeve gap, this utilize valve insertion pressure self-tightening seal can ensure the flexibility that valve rod rotates for a long time, in like manner, lower dust ring 105 is consistent with above-mentioned principle with the action principle of lower gasket 106.
The material of described auxiliary-seat 107 is PTFE, PEEK or metallic material, wherein be preferably PTFE, i.e. polytetrafluoroethylmaterial material, it is outer consistent just as valve lumen 3 profile, then be embedded in described valve lumen 3, described valve lumen 3 fills up by such auxiliary-seat 7 completely, prevent valve powder in switching process from entering valve lumen 3, and then solve ultrafine dust and easily stick to problem on spherome surface in a large number, the end is wanted with the friction factor of spheroid than the friction factor of ultrafine dust and spheroid owing to adopting the auxiliary-seat of polytetrafluoroethylmaterial material, so described valve lumen 3 can not cause valve torque significantly to increase after adding auxiliary-seat.
In addition, valve rod 113, lower shaft 102 adopt integrated design with spheroid 108, ensure ball centre line and valve rod center line all the time on the same line, reduce the possibility because there is wide arc gap after valve rod deflection with valve stem sleeve, that avoids valve rod and valve stem sleeve surface to cause because ultrafine dust enters its gap crosses quick-wearing.
The utility model can prevent ultrafine dust from entering valve lumen and gap between valve rod and axle sleeve, reduces the probability that break down of ball valve in ultrafine dust operating mode.
Above-described is only mode of executions more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (7)
1. the ball valve for ultrafine dust, it is characterized in that: the valve body and the bonnet that comprise integral type shaping, and integrally formed lower shaft, valve rod and spheroid, on described valve rod, cover has valve stem sleeve, on described lower shaft, cover has lower shaft axle sleeve, main valve seat is provided with between described bonnet and described spheroid, described valve body, bonnet, valve lumen is formed between spheroid and main valve seat, the auxiliary-seat consistent with its shape is provided with in described valve lumen, dust ring and upper gasket is provided with between described valve stem sleeve and described auxiliary-seat, lower dust ring and lower gasket is provided with between described lower shaft axle sleeve and described auxiliary-seat.
2. the ball valve for ultrafine dust according to claim 1, is characterized in that: described upper dust ring is positioned at above described upper gasket.
3. the ball valve for ultrafine dust according to claim 1, is characterized in that: described lower dust ring is positioned at below described lower gasket.
4. the ball valve for ultrafine dust according to claim 2, is characterized in that: the surface of contact of described upper dust ring and described upper gasket is inclined-plane.
5. the ball valve for ultrafine dust according to claim 3, is characterized in that: the surface of contact of described lower dust ring and described lower gasket is inclined-plane.
6. the ball valve for ultrafine dust according to claim 1, is characterized in that: the material of described auxiliary-seat is PTFE, PEEK or metallic material.
7. the ball valve for ultrafine dust according to claim 1, is characterized in that: the center line of described spheroid and the center line of described valve rod are all the time on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420586254.1U CN204164408U (en) | 2014-10-11 | 2014-10-11 | A kind of ball valve for ultrafine dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420586254.1U CN204164408U (en) | 2014-10-11 | 2014-10-11 | A kind of ball valve for ultrafine dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164408U true CN204164408U (en) | 2015-02-18 |
Family
ID=52538096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420586254.1U Active CN204164408U (en) | 2014-10-11 | 2014-10-11 | A kind of ball valve for ultrafine dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164408U (en) |
-
2014
- 2014-10-11 CN CN201420586254.1U patent/CN204164408U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 The west side of Laixiu Road and the north side of Xinsheng Road, Fenhu Economic Development Zone, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Suzhou Antway Industrial Intelligent Technology Co.,Ltd. Address before: 215000 The west side of Laixiu Road and the north side of Xinsheng Road, Fenhu Economic Development Zone, Wujiang District, Suzhou City, Jiangsu Province Patentee before: SUZHOU ANTIWEAR VALVES Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |