CN207145625U - Negative pressure of vacuum safety valve - Google Patents
Negative pressure of vacuum safety valve Download PDFInfo
- Publication number
- CN207145625U CN207145625U CN201721152641.4U CN201721152641U CN207145625U CN 207145625 U CN207145625 U CN 207145625U CN 201721152641 U CN201721152641 U CN 201721152641U CN 207145625 U CN207145625 U CN 207145625U
- Authority
- CN
- China
- Prior art keywords
- valve
- seat
- negative pressure
- inner sleeve
- overcoat
- 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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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of negative pressure of vacuum safety valve, it is intended to solves that negative pressure of vacuum safety valve sealing property is bad, assembles the deficiency of inconvenience.The utility model includes valve seat, valve rod, inner sleeve, overcoat, valve pocket is provided with valve seat, valve pocket upper and lower ends are respectively equipped with the valve opening and venthole connected with valve pocket, valve rod lower end connects flap, flap outer wall is obliquely installed outwardly from top to bottom, the sealing surface being obliquely installed is provided between valve opening and valve pocket, the fitting of flap outer wall is connected on sealing surface, valve seat upper end connects positioning seat, valve rod runs through positioning seat, positioning seat outer wall is provided with the passage connected with valve opening, valve rod upper end connecting spring seat, setting spring is connected between spring base and positioning seat, inner sleeve and overcoat lower end are connected to valve seat outward flange position, gap is provided between inner sleeve and overcoat radial direction, some intercommunicating pores and some air admission holes are respectively equipped with inner sleeve and sleeve side wall.
Description
Technical field
A kind of safety valve is the utility model is related to, more specifically, it relates to a kind of negative pressure of vacuum safety valve.
Background technology
The use of negative pressure of vacuum safety valve is on airtight vacuum container, and when the pressure in container is less than setting value, vacuum is born
Press safety valve open, pressure is supplemented into container, the pressure in container is not less than setting value, prevent container inner pressure too low and
There is the phenomenon of damage container.Negative pressure of vacuum safety valve species is various in the market, vdiverse in function, but many negative pressure of vacuum
Safety valve sealing property is bad, assembling inconvenience.
Utility model content
The utility model overcomes that negative pressure of vacuum safety valve sealing property is bad, assembles the deficiency of inconvenience, there is provided a kind of
Negative pressure of vacuum safety valve, its good seal performance is easy to assembly, safety valve have open prompting function, personnel easy to operation and
Shi Faxian.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：A kind of negative pressure of vacuum safety valve, bag
Valve seat, valve rod, inner sleeve, overcoat are included, valve pocket is provided with valve seat, valve pocket upper and lower ends are respectively equipped with the valve opening connected with valve pocket and gone out
Stomata, valve rod lower end connection flap, flap outer wall are obliquely installed, are provided with and are obliquely installed between valve opening and valve pocket outwardly from top to bottom
Sealing surface, the fitting of flap outer wall is connected on sealing surface, and valve seat upper end connection positioning seat, valve rod runs through positioning seat, positioning seat
Outer wall is provided with the passage connected with valve opening, valve rod upper end connecting spring seat, is connected between spring base and positioning seat and adjusts bullet
Spring, inner sleeve and overcoat lower end are connected to valve seat outward flange position, and gap, inner sleeve and overcoat side are provided between inner sleeve and overcoat radial direction
Some intercommunicating pores and some air admission holes are respectively equipped with wall.
Negative pressure of vacuum safety valve is in use, valve seat lower end is connected with container, venthole and reservoir.Flap outer wall is from upper
Down it is obliquely installed outwardly, the fitting of flap outer wall is connected on the sealing surface being obliquely installed, and sealing area is big, good sealing effect,
And sealing surface is obliquely installed and is not easy residual impurity, sealing property is improved.Negative pressure of vacuum safety valve structure is simple, assembling process behaviour
Facilitate, assembling speed is fast.When the pressure in container is less than setting value, flap is pulled down, and valve opening is opened, and passes through air inlet
Hole, intercommunicating pore, valve opening supplement pressure into container.This negative pressure of vacuum safety valve good seal performance, it is easy to assembly.
Preferably, valve pocket is in up big and down small round-like structure.The valve pocket of this structure is advantageous to accumulate pressure, favorably
In the unlatching of flap.
Preferably, valve seat upper end is provided with the positioning hole connected with valve opening, positioning seat is threaded in positioning hole.Positioning
Seat is connected in positioning hole, easy to connect reliable, to the good positioning effect of valve rod.
Preferably, sealing ring is installed on flap outer wall.Sealing ring improves the sealing property of flap.
Preferably, interior set upper side is welded with cover plate, cover plate is provided with avoid holes, and valve rod upper end is arranged on avoidance hole position
Put, inner sleeve lower end is welded on valve seat.Inner sleeve is linked and packed conveniently.
Preferably, inner sleeve is provided with screw thread bulge loop, overcoat upper end closed, the threaded connection of overcoat lower end close to lower end outer wall
On screw thread bulge loop.Overcoat is easy to assembly, and connection is reliable.
Preferably, being connected with air blowing whistle on the air admission hole of overcoat, air blowing whistle outer end is connected with screen pack.Flap is opened
Open, when inlet charge, filtered by screen pack, prevent impurity from entering, avoid impurity remain on sealing surface and
Influence sealing property.Air blowing whistle sounds when air inlet, reminds operating personnel's safety valve to have been switched on.
Compared with prior art, the beneficial effects of the utility model are：The good seal performance of negative pressure of vacuum safety valve, assembling
Convenient, safety valve, which has, opens prompting function, and personnel easy to operation have found in time.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model；
Fig. 2 is the structural representation of embodiment 2 of the present utility model；
In figure：1st, valve seat, 2, valve rod, 3, inner sleeve, 4, overcoat, 5, valve pocket, 6, valve opening, 7, venthole, 8, flap, 9, sealing
Face, 10, positioning seat, 11, passage, 12, spring base, 13, setting spring, 14, intercommunicating pore, 15, air admission hole, 16, positioning hole,
17th, sealing ring, 18, cover plate, 19, avoid holes, 20, screw thread bulge loop, 21, air blowing whistle, 22, screen pack.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically to retouch
State：
Embodiment 1：A kind of negative pressure of vacuum safety valve（Referring to accompanying drawing 1）, including valve seat 1, valve rod 2, inner sleeve 3, overcoat 4, valve
Valve pocket 5 is provided with seat, valve pocket is in up big and down small round-like structure, and valve pocket upper and lower ends are respectively equipped with the valve opening connected with valve pocket
6 and venthole 7, valve rod lower end connection flap 8, flap outer wall is obliquely installed, is provided between valve opening and valve pocket outwardly from top to bottom
The sealing surface 9 being obliquely installed, the fitting of flap outer wall are connected on sealing surface, and valve seat upper end connection positioning seat 10, valve rod is through fixed
Position seat, positioning seat outer wall are provided with the passage 11 connected with valve opening, valve rod upper end connecting spring seat 12, spring base and positioning seat
Between connect setting spring 13, inner sleeve and overcoat lower end are connected to valve seat outward flange position, are provided between inner sleeve and overcoat radial direction
Some intercommunicating pores 14 and some air admission holes 15 are respectively equipped with gap, inner sleeve and sleeve side wall.Valve seat upper end is provided with to be connected with valve opening
Logical positioning hole 16, positioning hole and valve opening are coaxially disposed, and positioning hole internal diameter is more than valve opening internal diameter, and positioning seat is threaded in positioning
Kong Zhong.Sealing ring 17 is installed on flap outer wall.Interior set upper side is welded with cover plate 18, and cover plate is provided with avoid holes 19, on valve rod
End, which is arranged on, avoids hole site, and inner sleeve lower end is welded on valve seat.Inner sleeve is provided with screw thread bulge loop 20, overcoat close to lower end outer wall
Upper end closed, overcoat lower end are threaded on screw thread bulge loop.
Negative pressure of vacuum safety valve is in use, valve seat lower end is connected with container, venthole and reservoir.Flap outer wall is from upper
Down it is obliquely installed outwardly, the fitting of flap outer wall is connected on the sealing surface being obliquely installed, and sealing area is big, good sealing effect,
And sealing surface is obliquely installed and is not easy residual impurity, sealing property is improved.Negative pressure of vacuum safety valve structure is simple, assembling process behaviour
Facilitate, assembling speed is fast.When the pressure in container is less than setting value, flap is pulled down, and valve opening is opened, and passes through air inlet
Hole, intercommunicating pore, valve opening supplement pressure into container.
Embodiment 2：A kind of negative pressure of vacuum safety valve（Referring to accompanying drawing 2）, its structure is similar to Example 1, main difference
Air blowing whistle 21 is being connected with the air admission hole of overcoat in the present embodiment, air blowing whistle outer end is connected with screen pack 22.It is other
Structure is same as Example 1.
Embodiment described above is two kinds of preferable schemes of the present utility model, not the utility model is made any
Formal limitation, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (7)
1. a kind of negative pressure of vacuum safety valve, it is characterized in that, including valve seat, valve rod, inner sleeve, overcoat, valve seat is interior to be provided with valve pocket, valve pocket
Upper and lower ends are respectively equipped with the valve opening and venthole connected with valve pocket, valve rod lower end connection flap, flap outer wall court from top to bottom
Outer incline is set, and the sealing surface being obliquely installed is provided between valve opening and valve pocket, and the fitting of flap outer wall is connected on sealing surface, valve seat
Upper end connects positioning seat, and valve rod runs through positioning seat, and positioning seat outer wall is provided with the passage connected with valve opening, the connection of valve rod upper end
Spring base, connects setting spring between spring base and positioning seat, inner sleeve and overcoat lower end are connected to valve seat outward flange position, inner sleeve
Gap is provided between overcoat radial direction, some intercommunicating pores and some air admission holes are respectively equipped with inner sleeve and sleeve side wall.
2. negative pressure of vacuum safety valve according to claim 1, it is characterized in that, valve pocket is in up big and down small round-like structure.
3. negative pressure of vacuum safety valve according to claim 1, it is characterized in that, valve seat upper end is provided with the positioning connected with valve opening
Hole, positioning seat are threaded in positioning hole.
4. negative pressure of vacuum safety valve according to claim 1, it is characterized in that, sealing ring is installed on flap outer wall.
5. the negative pressure of vacuum safety valve according to Claims 1-4 any one, it is characterized in that, interior set upper side is welded with lid
Plate, cover plate are provided with avoid holes, and valve rod upper end, which is arranged on, avoids hole site, and inner sleeve lower end is welded on valve seat.
6. the negative pressure of vacuum safety valve according to Claims 1-4 any one, it is characterized in that, inner sleeve is close to lower end outer wall
Screw thread bulge loop is provided with, overcoat upper end closed, overcoat lower end is threaded on screw thread bulge loop.
7. the negative pressure of vacuum safety valve according to Claims 1-4 any one, it is characterized in that, connect on the air admission hole of overcoat
Air blowing whistle is connected to, air blowing whistle outer end is connected with screen pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721152641.4U CN207145625U (en) | 2017-09-09 | 2017-09-09 | Negative pressure of vacuum safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721152641.4U CN207145625U (en) | 2017-09-09 | 2017-09-09 | Negative pressure of vacuum safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145625U true CN207145625U (en) | 2018-03-27 |
Family
ID=61678166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721152641.4U Expired - Fee Related CN207145625U (en) | 2017-09-09 | 2017-09-09 | Negative pressure of vacuum safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145625U (en) |
-
2017
- 2017-09-09 CN CN201721152641.4U patent/CN207145625U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 Termination date: 20210909 |