CN111692364A - Semi-ball valve - Google Patents
Semi-ball valve Download PDFInfo
- Publication number
- CN111692364A CN111692364A CN201910191004.5A CN201910191004A CN111692364A CN 111692364 A CN111692364 A CN 111692364A CN 201910191004 A CN201910191004 A CN 201910191004A CN 111692364 A CN111692364 A CN 111692364A
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- CN
- China
- Prior art keywords
- valve
- sealing
- valve body
- clack
- spherical
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a half ball valve which comprises a valve body, a valve rod and a valve clack, wherein a graphite packing pad is arranged on the top of the valve rod and above a sliding bearing and is sealed in the valve body through a packing pressing cover, an annular trough is arranged on the contact surface of the outlet end of the valve body and the spherical surface of the valve clack, a material injection hole is arranged on the valve wall of the valve body, the inner end of the material injection hole is communicated with an annular groove, a sealing cover is arranged at the outer end of the material injection hole, and sealing packing is injected in the groove. The semi-spherical valve has the advantages of good sealing effect, simple structure and low processing requirement of a sealing surface, the sealing graphite layer is arranged between the top shaft hole of the valve body and the valve rod, and the sealing filler cavity is arranged between the contact surface of the outer spherical surface of the semi-spherical valve clack and the outlet end of the valve body, so that the sealing performance of the semi-spherical valve is effectively improved, the wear resistance of the semi-spherical valve clack is improved, and the service life is prolonged. Particularly, when the ball valve on the operation pipeline (playing a role in cutting off) has a sealing problem, the sealing part of the valve does not need to be replaced, and only the sealing filler needs to be injected again.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a hemispherical valve.
Background
Traditional half ball valve is mostly metal hard seal structure, the ball valve is in the use, its inside medium can produce the sealed face of ball valve when flowing in the pipeline and wash and the effect of cavitation, wash and under the cavitation that the medium is ceaseless, the sealed face of ball valve takes place local damage very easily, simultaneously in addition chemical erosion action, the combined action is sealed face, thereby lead to the ball valve to easily take place destruction under the erosion action, make it take place the seepage and scrap even, the valve clack wearing and tearing that easily cause the ball valve in the in-process of opening and close very much and sealed not tight, need the whole sealing member of changing after the sealed face of valve clack damages.
When the valve clack of ball valve is sealed and goes wrong, unable direct change, need overhaul after the pipeline is whole to let out empty, great increase the time of salvageing, simultaneously, consequently, lead to the system pipeline to shut down and the loss that causes can't be estimated.
Disclosure of Invention
One technical problem that this disclosed an aspect was solved provides one kind and need not to change the sealing member and can reach the ball valve of sealed effect under the condition of not letting out the pressure, and this technical scheme need not to let out the interior flowing medium of pipeline, very big time of having saved the maintenance, has improved the stability of system's pipeline.
In order to achieve the purpose, the invention adopts the following technical scheme that the valve comprises a valve body, a valve rod and a valve clack, wherein the top of the valve body is provided with a top shaft hole, the bottom of the valve body is provided with a bottom shaft hole, the bottom of the valve rod is rotatably connected with the bottom shaft hole through a sliding bearing and a direct-pushing bearing, the top of the valve rod is rotatably connected with the top shaft hole through the sliding bearing, a lower sealing cover is arranged below the bottom shaft hole, the valve clack is connected with the valve rod and is arranged in the valve body,
graphite packing pads are arranged on the top of the valve rod and above the sliding bearing and are sealed in the valve body through a packing pressing cover;
the valve body is characterized in that an annular material groove is arranged on the contact surface of the outlet end of the valve body and the spherical surface of the valve clack, a material injection hole is arranged on the valve wall of the valve body, the inner end of the material injection hole is communicated with an annular groove, a sealing cover is arranged at the outer end of the material injection hole, and sealing filler is injected in the groove.
Preferably, the graphite filler is a flexible graphite sealing filler.
Preferably, the sealing cover is a bolt.
Compared with the prior art, the invention has the following advantages: the semi-spherical valve has the advantages of good sealing effect, simple structure and low processing requirement of a sealing surface, the sealing graphite layer is arranged between the top shaft hole of the valve body and the valve rod, and the sealing filler cavity is arranged between the contact surface of the outer spherical surface of the semi-spherical valve clack and the outlet end of the valve body, so that the sealing performance of the semi-spherical valve is effectively improved, the wear resistance of the semi-spherical valve clack is improved, and the service life is prolonged. Particularly, when the ball valve on the operation pipeline has a sealing problem, the ball valve does not need to be replaced, and only the graphite filler needs to be injected again.
Drawings
FIG. 1 is a schematic structural diagram in accordance with one aspect of the present disclosure;
FIG. 2 is a schematic view of the A-A directional structure of FIG. 1 according to one aspect of the present disclosure;
in the figure: 1-valve body, 2-valve clack, 3-material injection hole, 4-lower sealing cover, 5-thrust bearing, 6-sliding bearing, 7-valve rod, 8-annular groove, 9-graphite packing pad and 10-packing pressing cover.
Detailed Description
The present invention will be further explained with reference to specific embodiments, but the invention is not limited thereto, and the structures, proportions, sizes, and the like shown in the drawings are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the conditions under which the present invention can be implemented, so that the present invention has no technical essence, and any structural modification, changes in proportion, or adjustments in size, should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the functions and purposes which can be achieved by the present invention. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
Example, as shown in fig. 1 and 2, the common ball valve technology mainly performs sealing treatment on the hollow part of an upper shaft and a lower shaft, the valve clack is sealed by a one-step formed sealing gasket, the ball valve is mainly technically characterized in that, an annular material groove 8 is arranged on the contact surface of the outlet end of the valve body 1 and the spherical surface of the valve clack 2, a material injection hole 3 is arranged on the valve wall of the valve body 1, the inner end of the material injection hole 3 is communicated with the annular groove 8, when the ball valve is in a closed state, the flexible graphite sealing filler is injected into the annular groove 8 through the injection hole 3 by using an injection tool, then the flexible graphite sealing filler is plugged in the annular groove 8 by using a bolt, when the bolt is screwed in, the graphite packing is provided with a certain pressure to enhance the sealing performance, at the moment, the graphite packing forms a flexible graphite ring in the annular groove 8, and the graphite ring is flexible and is tightly connected with the valve clack 2 under the action of the pressure. In the common ball valve technology, the valve clack 2 is in rigid contact with the valve body 1 or a sealing gasket at the outlet of the valve body 1, the valve clack 2, the valve body 1 or the sealing gasket cannot be repaired after being abraded and can only be replaced, the sealing part of the ball valve is filled with flexible graphite, and the graphite can be refilled from the outside after being consumed, so that the time for maintenance and repair is saved, and the cost for replacing the ball valve is also saved.
The main application effect of this ball valve lies in, uses in special operating mode, when the pipeline need be closed, rotates the ball valve to the closed condition, takes off the shutoff bolt, pours into the graphite packing and adorns the shutoff bolt, and the pipeline is accomplished and is closed the demand. Along with the corrosion of the fluid medium in the pipeline to the valve clack 2 and the loss of the graphite filler at the valve clack 2, the valve clack 2 in the closed state can have the leakage condition, at the moment, the plugging bolt is taken down again, the graphite filler is injected and installed, and the valve clack 2 is in the intact sealed state again. In the process, a drain pipeline and a ball valve do not need to be replaced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a hemisphere valve, includes valve body, valve rod, valve clack, and the valve body top is equipped with top shaft hole, the bottom is equipped with bottom shaft hole, and the valve rod bottom is connected with bottom shaft hole rotation through slide bearing and straight push bearing, and the top of valve rod is passed through slide bearing and is connected with top shaft hole rotation, and the below in bottom shaft hole is equipped with down the closing cap, and the valve clack is connected with the valve rod and sets up in the valve body its characterized in that:
graphite packing pads are arranged on the top of the valve rod and above the sliding bearing and are sealed in the valve body through a packing pressing cover;
the valve body is characterized in that an annular material groove is arranged on the contact surface of the outlet end of the valve body and the spherical surface of the valve clack, a material injection hole is arranged on the valve wall of the valve body, the inner end of the material injection hole is communicated with an annular groove, a sealing cover is arranged at the outer end of the material injection hole, and graphite filler is injected in the groove.
2. A half ball valve as claimed in claim 1, wherein: the graphite packing is flexible graphite sealing packing.
3. A half ball valve as claimed in claim 1, wherein: the sealing cover is a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191004.5A CN111692364A (en) | 2019-03-14 | 2019-03-14 | Semi-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191004.5A CN111692364A (en) | 2019-03-14 | 2019-03-14 | Semi-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111692364A true CN111692364A (en) | 2020-09-22 |
Family
ID=72475031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910191004.5A Pending CN111692364A (en) | 2019-03-14 | 2019-03-14 | Semi-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111692364A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004293724A (en) * | 2003-03-28 | 2004-10-21 | Hisaka Works Ltd | Seat for ball valve |
| CN202176748U (en) * | 2011-08-17 | 2012-03-28 | 浙江特技阀门有限公司 | Ball-type airlock valve |
| CN203023540U (en) * | 2013-01-18 | 2013-06-26 | 王海鹏 | Novel stop valve |
| CN203363265U (en) * | 2013-07-24 | 2013-12-25 | 郑州市郑蝶阀门有限公司 | Top-assembling type hard-sealing eccentric semispherical valve |
| CN203453494U (en) * | 2013-08-09 | 2014-02-26 | 博纳斯威阀门有限公司 | Water seal butterfly valve |
| CN203926881U (en) * | 2014-06-16 | 2014-11-05 | 科普蓝(上海)阀门工业有限公司 | single valve seat ball valve |
| CN208204067U (en) * | 2018-05-14 | 2018-12-07 | 无锡凯尔克仪表阀门有限公司 | A kind of metal sealing V-type ball valve |
-
2019
- 2019-03-14 CN CN201910191004.5A patent/CN111692364A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004293724A (en) * | 2003-03-28 | 2004-10-21 | Hisaka Works Ltd | Seat for ball valve |
| CN202176748U (en) * | 2011-08-17 | 2012-03-28 | 浙江特技阀门有限公司 | Ball-type airlock valve |
| CN203023540U (en) * | 2013-01-18 | 2013-06-26 | 王海鹏 | Novel stop valve |
| CN203363265U (en) * | 2013-07-24 | 2013-12-25 | 郑州市郑蝶阀门有限公司 | Top-assembling type hard-sealing eccentric semispherical valve |
| CN203453494U (en) * | 2013-08-09 | 2014-02-26 | 博纳斯威阀门有限公司 | Water seal butterfly valve |
| CN203926881U (en) * | 2014-06-16 | 2014-11-05 | 科普蓝(上海)阀门工业有限公司 | single valve seat ball valve |
| CN208204067U (en) * | 2018-05-14 | 2018-12-07 | 无锡凯尔克仪表阀门有限公司 | A kind of metal sealing V-type ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200922 |