CN204739273U - Floater formula vacuum break valve - Google Patents
Floater formula vacuum break valve Download PDFInfo
- Publication number
- CN204739273U CN204739273U CN201520306187.8U CN201520306187U CN204739273U CN 204739273 U CN204739273 U CN 204739273U CN 201520306187 U CN201520306187 U CN 201520306187U CN 204739273 U CN204739273 U CN 204739273U
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- CN
- China
- Prior art keywords
- valve
- valve body
- guide
- spring
- liquid
- 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 floater formula vacuum break valve, include with the communicating valve body of vacuum system, install the disk seat on the valve body and be used for stem guide's uide bushing that fasten on the disk seat, be provided with the air inlet on the disk seat, the valve rod runs through inside the uide bushing extends into the valve body, and its front end is provided with the valve clack that is used for sealing the air inlet with the disk seat cooperation, valve rod and valve clack fastening connection constitute the case subassembly, and it is T shape, be equipped with the spring between uide bushing and the spring holder, spring one end and the contact of spring holder lower part, the other end and the contact of uide bushing upper portion, install the lid on the valve body, the lid is provided with the guide holder, and it has the gas -liquid through -hole to open on the guide holder, still include a floater of placing in the valve body, the floater is connected with the guide bar, the guide bar is located the guide holder to can seal the gas -liquid through -hole. The technical problem that liquid leaked among the vacuum system can successfully be solved to this combination valve, avoids the dangerous liquid system of leaking outside, pollutes the external environment condition or threatens the personal safety.
Description
Technical field
The utility model relates to and a kind of vacuum system has air-breathing, exits and prevent the floater type vacuum breaking valve of leaked liquid.
Background technique
The condenser system of nuclear power station needs a kind of vacuum breaker valve possessing negative inspiratory pressure, positive pressure ventilation and prevent leaked liquid function.Existing inhalation valve and float valve all can not content with funtion requirements.Although inhalation valve possesses negative inspiratory pressure, positive pressure ventilation function, the leaked liquid in vacuum system can not be prevented, once the dangerous liquid in vacuum system leaks, cause serious pollution by external environment condition, the liquid resource in vacuum system can be wasted simultaneously.Although float valve possesses positive pressure ventilation and prevents the function of leaked liquid, negative inspiratory pressure requirement can not be met, once the low vacuum in vacuum system is in designing requirement, cause damage by the equipment that vacuum system is installed, even entail dangers to personal safety.At present, a kind of valve possessing negative inspiratory pressure, positive pressure ventilation simultaneously and prevent leaked liquid function is not also had.
Model utility content
For the technical problem of above-mentioned existence, the utility model provides a kind of floater type vacuum breaking valve, has negative inspiratory pressure, positive pressure ventilation and prevents the function of leaked liquid.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of combination brake switch and proporting, comprise communicate with vacuum system valve body, be installed on the valve seat on valve body and the guide sleeve for stem guiding, guide sleeve is fastened on valve seat; Valve seat is provided with suction port; Valve rod runs through guide sleeve and extends into valve inner, and its front end is provided with the flap coordinated with valve seat for closed suction port; Valve rod and flap are fastenedly connected, and form mangetic core assembly; Valve rod afterbody is set with spring seat; Spring is provided with between guide sleeve and spring seat; Described spring one end and spring seat lower contacts, the other end and guide sleeve upper contact; Valve body is provided with lid, and lid is provided with guide holder, guide holder has gas-liquid through hole; Also comprise a ball float be positioned in valve body, described ball float is connected with guide rod; Described guide rod is positioned at guide holder, and can close gas-liquid through hole.
Improve as one, the position that described valve rod is positioned at outside valve body is equipped with safety cover.Foreign material can be prevented to silt spring up, affect flap open and close.
Usefulness of the present utility model is: this floater type vacuum breaking valve can possess negative inspiratory pressure, positive pressure ventilation and prevent leaked liquid function, can simultaneously can not prevent leaked liquid and float valve can not the technical problem of negative inspiratory pressure by inhalation valve.The utility model both can avoid dangerous leak of liquid to pollute external environment condition to its exterior, can waste by protective system liquid resource again, can also prevent from causing system equipment safety because system vacuum is too low or jeopardizing personal safety simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1 valve body, 2 valve seats, 3 flaps, 4 valve rods, 5 springs, 6 lids, 7 suction ports, 8 ball floats, 9 safety covers, 10 gas-liquid through holes, 11 guide holders, 12 guide rods, 13 guide sleeves, 14 spring seats.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the utility model comprises the valve body 1 communicated with vacuum system, the guide sleeve 13 being installed on the valve seat 2 on valve body 1 and leading for valve rod 4, and guide sleeve 13 is fastened on valve seat 2; Valve seat 2 is provided with suction port 7; Valve rod 4 runs through guide sleeve 13, and to extend into valve body 1 inner, and its front end is provided with the flap 3 coordinated with valve seat 2 for closed suction port 7; Valve rod 4 and flap 3 are fastenedly connected, and form mangetic core assembly; Valve rod 4 afterbody is set with spring seat 14; Spring 5 is provided with between guide sleeve 13 and spring seat 14; Described spring 5 one end and spring seat 14 lower contacts, the other end and guide sleeve 13 upper contact; Valve body 1 is provided with lid 6, lid 6 is provided with guide holder 11, guide holder 11 has gas-liquid through hole 10.Also comprise a ball float 8 be positioned in valve body 1, described ball float 8 is connected with guide rod 12; Described guide rod 12 is positioned at guide holder 11, and can close gas-liquid through hole 10.Valve rod 4 position be positioned at outside valve body 1 is equipped with safety cover 9.
When vacuum system pressure surge has exceeded outside atmospheric pressure, the gas of superpressure in vacuum system can have been discharged by gas-liquid through hole 10, maintains the pressure of vacuum system in allowed limits.
When the pressure decrease slow of vacuum system, gas-liquid through hole 10 air-breathing can be leaned on to supplement the pressure of vacuum system, maintain the pressure of vacuum system in allowed limits.
When the pressure drop of vacuum system is rapid, when gas-liquid through hole 10 air-breathing can not compensate the pressure of vacuum system decline, the thrust now acting on flap 3 top is greater than the pretightening force that spring 5 provides, flap 3 is opened rapidly, ambient atmos is incorporated into valve body 1 by the suction port of valve seat 2 inner, enter vacuum system, the pressure of vacuum system raises gradually.When initial tension of spring is greater than the thrust acting on flap 3 top, flap 3 returns seat rapidly, and it is inner that ambient atmos cannot enter into valve body 1, and now the pressure recover of vacuum system is to normal value.
When in vacuum system, liquid sharply increases, valve inner float ball rises vapour-liquid through hole 10 can be sealed up with liquid level, prevents leaked liquid.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. a floater type vacuum breaking valve, is characterized in that: comprise communicate with vacuum system valve body, be installed on the valve seat on valve body and the guide sleeve for stem guiding, guide sleeve is fastened on valve seat; Valve seat is provided with suction port; Valve rod runs through guide sleeve and extends into valve inner, and its front end is provided with the flap coordinated with valve seat for closed suction port; Valve rod and flap are fastenedly connected, and form mangetic core assembly; Valve rod afterbody is set with spring seat; Spring is provided with between guide sleeve and spring seat; Described spring one end and spring seat lower contacts, the other end and guide sleeve upper contact; Valve body is provided with lid, and lid is provided with guide holder, guide holder has gas-liquid through hole; Also comprise a ball float be positioned in valve body, described ball float is connected with guide rod; Described guide rod is positioned at guide holder, and can close gas-liquid through hole.
2. a kind of floater type vacuum breaking valve according to claim 1, is characterized in that: the position that described valve rod is positioned at outside valve body is equipped with safety cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306187.8U CN204739273U (en) | 2015-05-13 | 2015-05-13 | Floater formula vacuum break valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306187.8U CN204739273U (en) | 2015-05-13 | 2015-05-13 | Floater formula vacuum break valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739273U true CN204739273U (en) | 2015-11-04 |
Family
ID=54421010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520306187.8U Expired - Fee Related CN204739273U (en) | 2015-05-13 | 2015-05-13 | Floater formula vacuum break valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204739273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879539A (en) * | 2015-05-13 | 2015-09-02 | 华夏阀门有限公司 | Float ball type vacuum breaker valve |
-
2015
- 2015-05-13 CN CN201520306187.8U patent/CN204739273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879539A (en) * | 2015-05-13 | 2015-09-02 | 华夏阀门有限公司 | Float ball type vacuum breaker valve |
| CN104879539B (en) * | 2015-05-13 | 2018-01-26 | 华夏阀门有限公司 | Floater type vacuum breaking valve |
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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: 20151104 Termination date: 20180513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |