CN102813452A - Pressure limiting and over-pressure protecting device for pressure cooker - Google Patents
Pressure limiting and over-pressure protecting device for pressure cooker Download PDFInfo
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- CN102813452A CN102813452A CN 201110153512 CN201110153512A CN102813452A CN 102813452 A CN102813452 A CN 102813452A CN 201110153512 CN201110153512 CN 201110153512 CN 201110153512 A CN201110153512 A CN 201110153512A CN 102813452 A CN102813452 A CN 102813452A
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Abstract
The invention discloses a pressure limiting and over-pressure protecting device for a pressure cooker. The pressure limiting and over-pressure protecting device comprises an upper threaded connector, a lower threaded connector, a variable-size type exhaust tube and an over-pressure protecting valve plug assembly, a pressure spring, a sealing ring, a pressure limiting valve and an anti-blocking cover. The protecting device is mounted on a cover of the pressure cooker through the upper threaded connector and the lower threaded connector; when the pressure cooker works normally, the pressure in the pressure cooker is maintained through the exhaust tube and the pressure limiting valve; and when the exhaust tube of the pressure cooker is blocked, the compression area of a valve plug and the pressure are increased, at the moment, the valve plug is jacked to be opened, the pressure in the pressure cooker is relieved through the valve plug, and the safety of the pressure cooker is ensured.
Description
[technical field]
The present invention relates to a kind of safeguard protection part of pressure cooker, especially a kind of pressure limiting of pressure cooker, over-pressure safety device.
[background technology]
At present, the safeguard protection part of installing on the pressure cooker mainly is pressure limiting valve, alarm valve and safety valve.Because it is special that the structure of pressure limiting valve, alarm valve and safety valve is limit and worked, thus still have potential safety hazard, the time generation of security incident is arranged, the analysis reason mainly contains following 2 points: the one, the blast pipe of pressure limiting valve is elongated, easy blocking; The 2nd, the inner chamber of alarm valve or safety valve is narrow and small, and meal slag dish foam accumulates over a long period for a long time, and inefficacy unavoidably results in blockage; Add that alarm valve or safety valve can not work at ordinary times, whether normally be difficult to distinguish, so to crucial moment; Not reporting to the police of this warning, the problem of safety will occur.
[summary of the invention]
The pressure cooker safety guard that the purpose of this invention is to provide a kind of structure uniqueness, reliable operation, i.e. a kind of pressure limiting of pressure cooker, over-pressure safety device.Overcome the deficiency of existing pressure limiting valve, alarm valve and safety valve.
The basic structure of pressure cooker pressure limiting of the present invention, over-pressure safety device comprises thread connector, following thread connector, reducing type blast pipe and overvoltage protection valve plug sub-assembly, compression spring, sealing ring, pressure limiting valve, Anti-stop cover.This device is installed in covering of pressure cooker through thread connector up and down, and compression spring is sleeved on the sub-assembly, and the lower end of spring is pressed on the big footpath table top of sub-assembly; At the through hole that is axially arranged with of upper and lower thread connector, the young inner chamber of through hole is big, radially is provided with venthole at last thread connector; During connection; Sub-assembly is worn and is clipped between the upper and lower thread connector, and the overvoltage protection valve plug of sub-assembly realizes and the sealing of following thread connector that through the extruding of sealing ring and compression spring thread connector and pot cover are through the fastening realization sealing of inboard sealing ring and screw thread; Anti-stop cover links to each other with following thread connector, and pressure limiting valve is mounted on the blast pipe of sub-assembly.And when designing and producing, accomplish the pressure that pressure that the valve plug is backed down backs down a little more than pressure limiting valve.
Operation principle of the present invention: during the pressure cooker heating work, the pressure rises in the pressure cooker is when pressure reaches the pressure that pressure cooker sets; Pressure limiting valve is backed down, and blast pipe begins exhaust and rushes down pressure, and the air pressure in the pressure cooker descends; Pressure limiting valve falls after rise again the pressure cooker sealing, and the air pressure in the pressure cooker rises again, when pressure reaches the pressure that pressure cooker sets again; Pressure limiting valve is backed down again; Blast pipe begins exhaust again and rushes down pressure, and the air pressure in the pressure cooker descends again ... so move in circles, and it is certain that the air pressure in the pressure cooker keeps.When the blast pipe of pressure cooker stops up or part is stopped up and caused exhaust not smooth; When the air pressure in the pressure cooker reached the operating pressure that sets, pressure limiting valve temporarily can not backed down, still; Because the endoporus of valve plug and blast pipe at grade; At this moment, the lifting surface area of valve plug will increase relatively, and pressure also can increase.Because particular design of the present invention, when the air pressure in the pressure cooker surpassed the operating pressure that sets, the valve plug will be backed down because of stressed increase; Air pressure in the pressure cooker will rush down pressure through the inner chamber and the venthole discharge of valve plug, connector, and the pressure in the pressure cooker descends, and the valve plug seals pressure cooker again under the effect of spring force; Pressure in the pressure cooker rises again; The stressed increase of valve plug is backed down the beginning exhaust again and is rushed down pressure, so moves in circles, and the air pressure in the pressure cooker equally also can be protected out the beginning exhaust and rush down pressure; So move in circles, the air pressure in the pressure cooker equally also can guarantee within safe range.Therefore, the pressure cooker accident that can not meet accident because of the obstruction of the blast pipe of pressure limiting valve.
By above visible, the advantage of pressure cooker pressure limiting of the present invention, over-pressure safety device is obvious: one can substitute existing pressure limiting valve and save alarm valve, safety valve, practices thrift cost of manufacture; The 2nd, the inner chamber of valve plug is big, and receives the protection of Anti-stop cover with the blast pipe of pressure limiting valve, the inefficacy that is not easy to result in blockage, and security reliability improves, and the life-span prolongs; The 3rd, because of the design of steam vent and valve plug at grade, when steam vent stopped up, the compression area of valve plug will increase relatively, the valve plug will be more prone to backed down, this point also is a special feature of the present invention.
[description of drawings]
Below in conjunction with accompanying drawing the specific embodiment of pressure cooker pressure limiting of the present invention, over-pressure safety device is done further detailed explanation, wherein:
Fig. 1 is the structural representation of pressure cooker pressure limiting of the present invention, over-pressure safety device.
[specific embodiment]
As shown in Figure 1; Pressure cooker pressure limiting of the present invention, over-pressure safety device comprise thread connector 1, following thread connector 2, reducing type blast pipe and overvoltage protection valve plug sub-assembly 3, compression spring 4, sealing ring 5, sealing ring 6, pressure limiting valve 8 and Anti-stop cover 9.Pressure cooker pressure limiting, over-pressure safety device are installed on the lid 14 of pressure cooker with following thread connector 2 through last thread connector 1, and compression spring 4 is sleeved on the sub-assembly 3, and the lower end of spring 4 is pressed on the big footpath table top 7 of sub-assembly 3.Be axially arranged with through hole 14 at last thread connector 1 and following thread connector 2; The young inner chamber of through hole is big, last thread connector 1 radially be provided with venthole 11, during connection; Sub-assembly 3 is worn to be clipped between thread connector 1 and the following screw thread couplet part 2; The valve plug 10 of sub-assembly 3 realizes and the sealing of following thread connection that through the extruding of sealing ring 6 and spring 4 thread connector 1,2 and pot cover 12 are through the fastening realization sealing of inboard sealing ring 5 and screw thread 16; Anti-stop cover 9 links to each other with following thread connector 1, and pressure limiting valve 8 is mounted on the blast pipe 15 of sub-assembly 3.
It more than is wherein a kind of embodiment of pressure cooker pressure limiting of the present invention, over-pressure safety device; Need to prove; Under the prerequisite that does not change basic structure of the present invention and principle; Can do some change and adjustment to shape, the connecting mode of element, these should be regarded as protection scope of the present invention in the lump.
Claims (1)
1. a pressure cooker pressure limiting, over-pressure safety device; Comprise thread connector, down thread connector, reducing type blast pipe and overvoltage protection valve plug sub-assembly, compression spring, sealing ring, pressure limiting valve, Anti-stop cover, it is characterized in that: pressure cooker pressure limiting, over-pressure safety device through about thread connector be installed in covering of pressure cooker, compression spring is sleeved on the sub-assembly; The lower end of spring is pressed on the big footpath table top of sub-assembly; At the through hole that is axially arranged with of thread connector up and down, the young inner chamber of through hole is big, radially is provided with venthole at last thread connector; During connection; Between the thread connector, the overvoltage protection valve plug of sub-assembly was through the extruding realization of sealing ring and spring and the sealing between the following thread connector about sub-assembly was worn and is clipped in, and the fastening realization through inboard sealing ring and screw thread between thread connector and the pot cover seals; Anti-stop cover links to each other with following thread connector, and pressure limiting valve is mounted on the blast pipe of sub-assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110153512 CN102813452A (en) | 2011-06-09 | 2011-06-09 | Pressure limiting and over-pressure protecting device for pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110153512 CN102813452A (en) | 2011-06-09 | 2011-06-09 | Pressure limiting and over-pressure protecting device for pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102813452A true CN102813452A (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110153512 Pending CN102813452A (en) | 2011-06-09 | 2011-06-09 | Pressure limiting and over-pressure protecting device for pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102813452A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496140A (en) * | 2015-12-26 | 2016-04-20 | 陈丽珍 | Vehicle-mounted heating vacuum cup |
| CN110179448A (en) * | 2018-05-29 | 2019-08-30 | 深圳市永盟智能信息系统有限公司 | Wearable blood pressure meter |
-
2011
- 2011-06-09 CN CN 201110153512 patent/CN102813452A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496140A (en) * | 2015-12-26 | 2016-04-20 | 陈丽珍 | Vehicle-mounted heating vacuum cup |
| CN110179448A (en) * | 2018-05-29 | 2019-08-30 | 深圳市永盟智能信息系统有限公司 | Wearable blood pressure meter |
| CN110179448B (en) * | 2018-05-29 | 2024-07-26 | 深圳市永盟智能信息系统有限公司 | Wearable sphygmomanometer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121212 |