CN202901418U - Vacuum relief valve device - Google Patents
Vacuum relief valve device Download PDFInfo
- Publication number
- CN202901418U CN202901418U CN 201220574823 CN201220574823U CN202901418U CN 202901418 U CN202901418 U CN 202901418U CN 201220574823 CN201220574823 CN 201220574823 CN 201220574823 U CN201220574823 U CN 201220574823U CN 202901418 U CN202901418 U CN 202901418U
- Authority
- CN
- China
- Prior art keywords
- spool
- vent hole
- valve
- valve gap
- pressure
- 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 - Lifetime
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Abstract
The utility model discloses a vacuum relief valve device. A valve seat (1) is coaxially and hermetically connected with a valve bonnet (3) provided with valve bonnet vent holes (12), an axially sliding spool (2) is arranged in the valve seat (1), a spool vent hole (13) is arranged on the side wall of the spool (2), a compression spring (4) is arranged between the spool (2) and the valve bonnet (3) and jacks the spool (2) to enable the spool vent hole (13) to be disconnected with the valve bonnet (3) under the safety pressure, and under the pressure exceeding the safety pressure, the spool (2) jacks the compression spring (4) out of the way to enable the spool vent hole (13) to be connected with the valve bonnet (3). The vacuum relief valve device is capable of guaranteeing a vacuum furnace to release pressure when the pressure is overhigh in the power failure state and is simpler and more compact in structure and convenient to use.
Description
Technical field
The utility model relates to a kind of safety valve, particularly relates to a kind of vacuum safety control valve unit.
Background technique
The utility model patent relates to the device (abbreviation safety valve) that must use on a kind of vacuum furnace and the use of vacuum furnace is shielded safely; this device can design according to the design pressure of vacuum furnace shell; guarantee vacuum furnace release pressure when overpressure, guarantee the safety of vacuum equipment.On the one hand, in the using process of vacuum furnace, usually can inflate, pressurize at present, thereby people in use will inevitably relate to safety problem, comprise personal safety and device security; On the other hand, in common equipment, people all adopt is the pressure of pressure transducer set device and carry out electronic control venting, guarantee the safety of equipment, but the method science not, and its reason is, in case unexpected power-off condition occurs, may cause security incident.
The model utility content
Technical problem to be solved in the utility model provides a kind of vacuum safety control valve unit that can guarantee vacuum furnace release pressure when overpressure under power down mode.
In order to solve the problems of the technologies described above, the vacuum safety control valve unit that the utility model provides, the valve seat co-axial seal is connected with valve gap, be provided with the valve gap vent hole at described valve gap, be provided with in axial sliding spool in the described valve seat, sidewall at described spool is provided with the spool vent hole, between described spool and described valve gap, be provided with Compress Spring, under safety pressure, described Compress Spring withstands described spool disconnects described spool vent hole and described valve gap, surpassing under the safety pressure, described spool backs down described Compress Spring connects described spool vent hole and described valve gap.
Be provided with adjusting bolt at described valve gap, described Compress Spring is located between described spool and the described adjusting bolt.
Sealing between described valve seat and the described valve gap is to be provided with dovetail groove at described valve seat, is provided with to be O-ring seals in described dovetail groove.
The gross area of described valve gap vent hole is two times of the gross area of described spool vent hole.
Adopt the vacuum safety control valve unit of technique scheme, vacuum equipment is in inflation or after furnace pressure makes the equipment superpressure because of thermal expansion, must discharge unnecessary pressure, the spool pressurized of safety valve is boosted and Compress Spring, discharge with furnace pressure after atmosphere is communicated with when the spool vent hole of spool like this, thereby realize the superpressure exhaust, reach the purpose of device security.Safety when the utility model provides a kind of mechanical vacuum safety control valve unit to guarantee the vacuum equipment superpressure.The utility model structure is more compact, and is simple, easy to use.This safety valve volume is little, easy for installation.Each parts of safety valve easy to process made material and prepared easily.Safety valve adopts the adjusting bolt structure, realizes the easy to adjust of different pressures.The making of spring can adopt other materials except 65Mn to make.Valve body, valve gap can adopt carbon steel material to replace stainless steel material.
In sum, the utility model is a kind ofly can guarantee vacuum furnace release pressure and structure vacuum safety control valve unit more compact, simple, easy to use when overpressure under power down mode.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the sealing schematic representation between valve seat of the present utility model and the valve gap.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, valve seat 1 adopts hex head bolt 8, hexagon nut 9 is connected with plain cushion and 3 coaxial connections of valve gap, joint between valve seat 1 and the valve gap 3 is provided with dovetail groove 14, in dovetail groove 14, be provided with and be O-ring seals 7, be provided with valve gap vent hole 12 at valve gap 3, be provided with in axial sliding spool 2 in the valve seat 1, sidewall at spool 2 is provided with spool vent hole 13, the gross area of valve gap vent hole 12 is two times of the gross area of spool vent hole 13, be provided with adjusting bolt 5 at valve gap 3, between spool 2 and adjusting bolt 5, be provided with Compress Spring 4, under safety pressure, Compress Spring 4 withstands spool 2 disconnects spool vent hole 13 and valve gap 3, is surpassing under the safety pressure, and spool 2 backs down Compress Spring 4 connects spool vent hole 13 and valve gap 3.
Referring to Fig. 1 and Fig. 2, valve seat 1 is connected with installing seat for safety valves 15, is provided with seal ring 11 between valve seat 1 and installing seat for safety valves 15.Vacuum equipment is in inflation or after furnace pressure makes the equipment superpressure because of thermal expansion, must discharge unnecessary pressure, spool 2 pressurizeds are boosted and Compress Spring 4, furnace pressure is discharged after the spool vent hole 13 of spool 2 passes through valve gap vent hole 12 and atmosphere is communicated with like this, thereby realize the superpressure exhaust, reach the purpose of device security.
Claims (4)
1. vacuum safety control valve unit, it is characterized in that: valve seat (1) co-axial seal is connected with valve gap (3), be provided with valve gap vent hole (12) at described valve gap (3), be provided with in axial sliding spool (2) in the described valve seat (1), sidewall at described spool (2) is provided with spool vent hole (13), between described spool (2) and described valve gap (3), be provided with Compress Spring (4), under safety pressure, described Compress Spring (4) withstands described spool (2) disconnects described spool vent hole (13) and described valve gap (3), surpassing under the safety pressure, described spool (2) backs down described Compress Spring (4) connects described spool vent hole (13) and described valve gap (3).
2. vacuum safety control valve unit according to claim 1, it is characterized in that: be provided with adjusting bolt (5) at described valve gap (3), described Compress Spring (4) is located between described spool (2) and the described adjusting bolt (5).
3. vacuum safety control valve unit according to claim 1 and 2, it is characterized in that: the sealing between described valve seat (1) and the described valve gap (3) is to be provided with dovetail groove (14) at described valve seat (1), is provided with to be O-ring seals (7) in described dovetail groove (14).
4. vacuum safety control valve unit according to claim 1 and 2 is characterized in that: the gross area of described valve gap vent hole (12) is two times of the gross area of described spool vent hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574823 CN202901418U (en) | 2012-11-02 | 2012-11-02 | Vacuum relief valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574823 CN202901418U (en) | 2012-11-02 | 2012-11-02 | Vacuum relief valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901418U true CN202901418U (en) | 2013-04-24 |
Family
ID=48122089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220574823 Expired - Lifetime CN202901418U (en) | 2012-11-02 | 2012-11-02 | Vacuum relief valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633189A (en) * | 2014-12-29 | 2015-05-20 | 中国科学院等离子体物理研究所 | Vacuum safety valve |
| US9670921B2 (en) | 2015-09-17 | 2017-06-06 | Monkey Pumps, LLC | Reciprocating drive mechanism with a spool vent |
| US10161396B2 (en) | 2015-09-17 | 2018-12-25 | Monkey Pumps, LLC | Zero emission reciprocating drive pump |
-
2012
- 2012-11-02 CN CN 201220574823 patent/CN202901418U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633189A (en) * | 2014-12-29 | 2015-05-20 | 中国科学院等离子体物理研究所 | Vacuum safety valve |
| US9670921B2 (en) | 2015-09-17 | 2017-06-06 | Monkey Pumps, LLC | Reciprocating drive mechanism with a spool vent |
| US10161396B2 (en) | 2015-09-17 | 2018-12-25 | Monkey Pumps, LLC | Zero emission reciprocating drive pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |