CN203730858U - Safety overflow valve - Google Patents
Safety overflow valve Download PDFInfo
- Publication number
- CN203730858U CN203730858U CN201420073669.9U CN201420073669U CN203730858U CN 203730858 U CN203730858 U CN 203730858U CN 201420073669 U CN201420073669 U CN 201420073669U CN 203730858 U CN203730858 U CN 203730858U
- Authority
- CN
- China
- Prior art keywords
- valve
- guide
- rod
- flap
- guide cylinder
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000008676 import Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a safety overflow valve which comprises a valve body, a valve seat, a valve flap, a guide sleeve, a valve rod, a spring and a bonnet. The valve seat is mounted in a valve body inner cavity. A sealed guide cylinder is connected to the lower portion of the valve seat. The guide rod is disposed on the lower portion of the valve flap. The guide rod is in clearance fit with the guide cylinder. A connecting rod is disposed between the guide rod and a valve flap sealing face. The diameter of the connecting rod is smaller than the inner hole diameter of the guide cylinder. A liquid inlet communicated with a valve body inlet is formed in the guide cylinder and located on the upper side of the guide rod. The sectional area of the annular passage between the connecting rod and the guide cylinder is at least equal to the area of the liquid inlet. A buffer cavity is formed between the lower end face of the guide rod and the bottom of the guide cylinder. When the valve flap returns to the valve seat, the buffer cavity is formed between the guide rod at the lower end of the valve flap and the valve seat guide cylinder to allow media in the buffer cavity to discharge slowly, impact of the valve flap sealing face on a valve seat sealing face is reduced, and the valve flap sealing face and the valve seat sealing face are effectively protected from being damaged by impact. In addition, the safety overflow valve is reliable in sealing performance, long in service life, and the like.
Description
Technical field
The utility model relates to valve field, especially relates to a kind of safety overflow valve.
Background technique
Safety valve is the effect for protecting pressurized container on pressurized container, and in the time that pressure reaches Set pressure, safety valve is opened relieving pressure, releases to while being less than safety valve setting pressure, and safety valve blowback reseals.When existing safety valve returns after unlatching, speed is exceedingly fast, and valve clack sealing surface is larger to the impact force of sealing surface of seat, easily damages sealing pair, affects the sealing of valve.
Summary of the invention
The utility model is the defect existing for prior art, and a kind of impact force of valve clack sealing surface to sealing surface of seat that effectively reduce is provided, and reduces sealing pair and damages, the safety overflow valve increasing the service life.
The utility model is realized by following technical solution:
This safety overflow valve comprises valve body, valve seat, flap, guide sleeve, valve rod, spring, valve gap, valve seat is installed on body cavity, valve seat has the sealing surface cooperatively interacting with flap, sealing surface of seat outlet is communicated with valve outlet, guide sleeve is fitted on valve body by valve gap, valve rod coordinates with guide sleeve is moving, it is mainly the guide cylinder of valve seat bottom connecting sealed, flap bottom is shaped with guide rod, this guide rod and guide cylinder Spielpassung, between guide rod and valve clack sealing surface, there is one section of connecting rod, the diameter of this connecting rod is less than guide cylinder internal orifice dimension, on guide cylinder, be shaped with the inlet opening being communicated with valve body import, this inlet opening is positioned at guide rod upside, annular pass sectional area between connecting rod and guide cylinder at least equals the area of inlet opening, between guide rod lower end surface and guide cylinder bottom surface, form buffer cavity.
In above technological scheme, flap has conical seal surface, and flap upper end contacts by apical axis and valve rod.
In above technological scheme, guide rod excircle is shaped with some annular grooves.
The utility model has the advantages that: when flap returns, between its lower end guide rod and valve seat guide cylinder, form buffer cavity; medium in buffer cavity is slowly discharged; reduce flap and open the speed of rear return; thereby reduce the impact force of valve clack sealing surface to sealing surface of seat; effectively protection valve clack sealing surface and sealing surface of seat are avoided impact failure, and sealability is reliable, long product lifecycle.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Safety overflow valve as shown in Figure 1, comprise valve body 1, valve seat 3, flap 2, guide sleeve 4, valve rod 5, spring 7, valve gap 6, valve seat 3 is installed on valve body 1 inner chamber, valve seat 3 has the sealing surface cooperatively interacting with flap 2, valve seat 3 sealing surface outlets are communicated with valve body 1 outlet, guide sleeve 4 is fitted on valve body 1 by valve gap 6, between guide sleeve 4 peripheries and valve body 1 inwall, be provided with seal ring, valve rod 5 coordinates with guide sleeve 4 is moving, between valve rod 5 peripheries and guide sleeve 4 inner hole walls, be provided with seal ring, the guide cylinder 12 of valve seat 3 bottom connecting sealeds, flap 2 bottoms are shaped with guide rod 10, this guide rod 10 and guide cylinder 12 Spielpassung, between guide rod 10 and flap 2 sealing surfaces, there is one section of connecting rod, the diameter of this connecting rod is less than guide cylinder 12 internal orifice dimensions, make connecting rod periphery and guide cylinder 12 inner hole walls form annular pass 8, on guide cylinder 12, be shaped with the inlet opening 9 being communicated with valve body 1 import, this inlet opening 9 is positioned at guide rod 10 upsides, annular pass 8 sectional areas between connecting rod and guide cylinder 12 at least equal the area of inlet opening 9, make the medium that inlet opening 9 is come in all cross smoothly annular pass 8, between guide rod 10 lower end surfaces and guide cylinder 12 bottom surfaces, form buffer cavity 11, in the time of 2 times seats of flap, medium in buffer cavity 11 is slowly extruded, reduce the seat speed of returning of flap 2, reduce the collision of sealing pair.
Flap 2 has conical seal surface, and flap 2 upper ends contact by apical axis and valve rod 5 lower ends, and valve rod 5 upper ends and lower spring cup contact.
Guide rod 10 excircles are shaped with some annular grooves, play the effect of slow-down in the process that the interior medium of buffer cavity 11 is discharged.On the outer peripheral surface of guide rod 10, also can manufacture some axial sump pits, the medium while making 2 times seats of flap in buffer cavity 11 can discharge on request.
Claims (3)
1. a safety overflow valve, comprise valve body (1), valve seat (3), flap (2), guide sleeve (4), valve rod (5), spring (7), valve gap (6), valve seat (3) is installed on valve body (1) inner chamber, valve seat (3) has the sealing surface cooperatively interacting with flap (2), the outlet of valve seat (3) sealing surface is communicated with valve body (1) outlet, guide sleeve (4) is fitted on valve body (1) by valve gap (6), valve rod (5) coordinates with guide sleeve (4) is moving, it is characterized in that the guide cylinder (12) of valve seat (3) bottom connecting sealed, flap (2) bottom is shaped with guide rod (10), this guide rod (10) and guide cylinder (12) Spielpassung, between guide rod (10) and flap (2) sealing surface, there is one section of connecting rod, the diameter of this connecting rod is less than guide cylinder (12) internal orifice dimension, on guide cylinder (12), be shaped with the inlet opening (9) being communicated with valve body (1) import, this inlet opening (9) is positioned at guide rod (10) upside, annular pass (8) sectional area between connecting rod and guide cylinder (12) at least equals the area of inlet opening (9), between guide rod (10) lower end surface and guide cylinder (12) bottom surface, form buffer cavity (11).
2. safety overflow valve according to claim 1, is characterized in that flap (2) has conical seal surface, and flap (2) upper end contacts by apical axis and valve rod (5) lower end.
3. safety overflow valve according to claim 1 and 2, is characterized in that guide rod (10) excircle is shaped with some annular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073669.9U CN203730858U (en) | 2014-02-18 | 2014-02-18 | Safety overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073669.9U CN203730858U (en) | 2014-02-18 | 2014-02-18 | Safety overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730858U true CN203730858U (en) | 2014-07-23 |
Family
ID=51200933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420073669.9U Expired - Lifetime CN203730858U (en) | 2014-02-18 | 2014-02-18 | Safety overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730858U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237644A (en) * | 2020-03-27 | 2020-06-05 | 荆门美中美阀门有限公司 | Valve linkage control system on high-pressure medium conveying line |
| CN113007403A (en) * | 2021-03-05 | 2021-06-22 | 浙江大学 | Safety valve structure capable of preventing back seat from being locked based on circumferential discharge pressure relief and method thereof |
| WO2024244655A1 (en) * | 2023-05-31 | 2024-12-05 | 浙江盾安人工环境股份有限公司 | Pressure relief valve and air conditioning system |
-
2014
- 2014-02-18 CN CN201420073669.9U patent/CN203730858U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237644A (en) * | 2020-03-27 | 2020-06-05 | 荆门美中美阀门有限公司 | Valve linkage control system on high-pressure medium conveying line |
| CN111237644B (en) * | 2020-03-27 | 2024-04-26 | 荆门美中美阀门有限公司 | Valve linkage control system on high-pressure medium conveying line |
| CN113007403A (en) * | 2021-03-05 | 2021-06-22 | 浙江大学 | Safety valve structure capable of preventing back seat from being locked based on circumferential discharge pressure relief and method thereof |
| CN113007403B (en) * | 2021-03-05 | 2022-03-29 | 浙江大学 | A safety valve structure and method for preventing back-seat jamming based on circumferential discharge pressure relief |
| WO2024244655A1 (en) * | 2023-05-31 | 2024-12-05 | 浙江盾安人工环境股份有限公司 | Pressure relief valve and air conditioning system |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |