CN106931204A - A kind of leakproof valve plug - Google Patents
A kind of leakproof valve plug Download PDFInfo
- Publication number
- CN106931204A CN106931204A CN201511006250.7A CN201511006250A CN106931204A CN 106931204 A CN106931204 A CN 106931204A CN 201511006250 A CN201511006250 A CN 201511006250A CN 106931204 A CN106931204 A CN 106931204A
- Authority
- CN
- China
- Prior art keywords
- plug
- piston
- row pressure
- pressure cavity
- openend
- 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
Links
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
Abstract
The present invention relates to a kind of leakproof valve plug,Including plug,Pressure release assembly,The plug is cylinder type hollow pipe,The outer wall of plug is provided with screw thread,Close one end open in described plug one end,The blind end of plug is provided with pressure release assembly,The pressure release assembly includes row pressure cavity,Precompressed piston and floating piston,The row pressure cavity closed at both ends,The side of plug openend is provided with air inlet in row pressure cavity,The floating piston is arranged on row pressure cavity towards the side of plug openend,The precompressed piston is arranged on row pressure air lattice towards the side of plug closed end,Spring is provided between the precompressed piston and floating piston,The side of the row pressure cavity dorsad plug openend is additionally provided with control-rod,The control-rod is connected through a screw thread with row pressure cavity wall,Described control lid one end is fixed on precompressed piston,Some pressure releasing holes are provided with the floating piston.
Description
Technical field
The present invention relates to a kind of leakproof valve plug, belong to pipeline plugging pig field.
Background technology
On many press devices, it is mounted on the blocking valve for being sealed to press device, and traditional blocking valve is a blocking header structure for simple structure, bearing capacity is poor, in hypertonia, it is easy to leak, or even all plug valve can directly depart from ejection from pressure vessel, cause danger.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the technical problem of blocking valve bearing capacity difference in the prior art, there is provided a kind of bearing capacity blocking valve higher.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of leakproof valve plug,Including plug,Pressure release assembly,The plug is cylinder type hollow pipe,The outer wall of plug is provided with screw thread,Close one end open in described plug one end,The blind end of plug is provided with pressure release assembly,The pressure release assembly includes row pressure cavity,Precompressed piston and floating piston,The row pressure cavity closed at both ends,The side of plug openend is provided with air inlet in row pressure cavity,The floating piston is arranged on row pressure cavity towards the side of plug openend,The precompressed piston is arranged on row pressure air lattice towards the side of plug closed end,Spring is provided between the precompressed piston and floating piston,The side of the row pressure cavity dorsad plug openend is additionally provided with control-rod,The control-rod is connected through a screw thread with row pressure cavity wall,Described control lid one end is fixed on precompressed piston,Some pressure releasing holes are provided with the floating piston.
As further innovation of the invention, flow-guiding mouth is additionally provided with the inwall of the plug openend, the inwall of the flow-guiding mouth is horn-like, and its slot end connects with air inlet.
The beneficial effects of the invention are as follows：
The present invention passes through a floating type compression mechanism, can be in the case where pressure be uprised suddenly, can dynamically be compressed, prevent the unexpected ejection or leakage of blocking valve, simultaneously floating piston can the pressure releasing hole of the above chronic return can be carried out after compression mechanism is compressed suddenly, to be discharged in unnecessary pressure reservoir to row pressure cavity, improve security.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is generalized section of the invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, and basic structure of the invention is only illustrated in a schematic way, therefore it only shows the composition relevant with the present invention.
As shown in Figure 1,The present invention is a kind of leakproof valve plug,Including plug 1,Pressure release assembly,The plug 1 is cylinder type hollow pipe,The outer wall of plug 1 is provided with screw thread,Close one end open in the one end of the plug 1,The blind end of plug 1 is provided with pressure release assembly,The pressure release assembly includes row pressure cavity 2,Precompressed piston 3 and floating piston 6,The closed at both ends of row pressure cavity 2,The side of the openend of plug 1 is provided with air inlet in row pressure cavity 2,The floating piston 6 is arranged on row pressure cavity 2 towards the side of the openend of plug 1,The precompressed piston 3 is arranged on row pressure air lattice towards the side of the closed end of plug 1,Spring 5 is provided between the precompressed piston 3 and floating piston 6,The side of the row pressure cavity 2 dorsad openend of plug 1 is additionally provided with control-rod 4,The control-rod 4 is connected through a screw thread with the wall of row pressure cavity 2,Described control lid one end is fixed on precompressed piston 3,Some pressure releasing holes 8 are provided with the floating piston 6；Flow-guiding mouth 7 is additionally provided with the inwall of the openend of the plug 1, the inwall of the flow-guiding mouth 7 is horn-like, and its slot end connects with air inlet.
When using, by the present invention at the opening of pressure vessel, as the pressure increases, the volume of row pressure cavity can be changed by lever for adjusting oil, realize the slow release of pressure, when pressure increases suddenly, fluid cannot be discharged timely via pressure releasing hole, now floating piston setting in motion, compression spring, enter row buffering, row pressure cavity is again via row pressure gas inlet hole simultaneously, the balance of pressure is realized, while the precompression of spring can also be changed by mobile precompressed piston, changes the operating pressure of floating piston.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff can carry out various changes and amendments without departing from the scope of the technological thought of the present invention' completely.The technical scope of this invention is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (2)
1. a kind of leakproof valve plug, it is characterized in that：Including plug,Pressure release assembly,The plug is cylinder type hollow pipe,The outer wall of plug is provided with screw thread,Close one end open in described plug one end,The blind end of plug is provided with pressure release assembly,The pressure release assembly includes row pressure cavity,Precompressed piston and floating piston,The row pressure cavity closed at both ends,The side of plug openend is provided with air inlet in row pressure cavity,The floating piston is arranged on row pressure cavity towards the side of plug openend,The precompressed piston is arranged on row pressure air lattice towards the side of plug closed end,Spring is provided between the precompressed piston and floating piston,The side of the row pressure cavity dorsad plug openend is additionally provided with control-rod,The control-rod is connected through a screw thread with row pressure cavity wall,Described control lid one end is fixed on precompressed piston,Some pressure releasing holes are provided with the floating piston.
2. as claimed in claim 1, it is characterized in that：Flow-guiding mouth is additionally provided with the inwall of the plug openend, the inwall of the flow-guiding mouth is horn-like, and its slot end connects with air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511006250.7A CN106931204A (en) | 2015-12-29 | 2015-12-29 | A kind of leakproof valve plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511006250.7A CN106931204A (en) | 2015-12-29 | 2015-12-29 | A kind of leakproof valve plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106931204A true CN106931204A (en) | 2017-07-07 |
Family
ID=59458353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511006250.7A Pending CN106931204A (en) | 2015-12-29 | 2015-12-29 | A kind of leakproof valve plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106931204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799040A (en) * | 2018-09-03 | 2018-11-13 | 三汽车制造有限公司 | A kind of pumping machine |
-
2015
- 2015-12-29 CN CN201511006250.7A patent/CN106931204A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799040A (en) * | 2018-09-03 | 2018-11-13 | 三汽车制造有限公司 | A kind of pumping machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |