CN2552439Y - Anti-blocking pressure-limiting valve for pressure-cooker - Google Patents
Anti-blocking pressure-limiting valve for pressure-cooker Download PDFInfo
- Publication number
- CN2552439Y CN2552439Y CN 02276926 CN02276926U CN2552439Y CN 2552439 Y CN2552439 Y CN 2552439Y CN 02276926 CN02276926 CN 02276926 CN 02276926 U CN02276926 U CN 02276926U CN 2552439 Y CN2552439 Y CN 2552439Y
- Authority
- CN
- China
- Prior art keywords
- conical surface
- valve body
- air inlet
- air
- fly rod
- 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 relates to an anti-blocking pressure limited valve for pressure cooker, which comprises a valve body 2 fixed on the cooker cover of the pressure cooker via a nut 1, and a bell jar type valve cover positioned on the valve body 2. The utility model is characterized in that the inner chamber of the valve body is distributed ''big in the middle and small in both ends'', and an upper conical surface 21 and a lower conical surface 22 are arranged in the middle part of the inner chamber; a floating pole 4 is arranged inside the inner chamber of the valve body, and the floating pole 4 is also distributed ''big in the middle and small in both ends''; an upper conical surface 42 and a lower conical surface 43 are arranged on a hammer body 41 in the middle part of the floating pole 4 corresponding to the upper conical surface 21 and the lower conical surface 22; an air vent groove 44 is evenly and vertically distributed around the hammer body 41; the air vent groove 44 is communicated with an upper air outlet pipe 46 of the floating pole 4 via a lateral air-guide hole 45 on the upper conical surface 42; a lateral air-guide hole 48 is arranged in the upper chamber of the lower air inlet pipe 47 of the floating pole 4; an air intake grid 49 is arranged at the lower end of the air inlet pipe 47. The utility model has the advantages that the inlet channel is automatically dredged, the blocking is effectively prevented, and the pressure cooker explosion accident caused by blocking is completely eliminated, so the life and property safety of people is ensured.
Description
A kind of pressure cooker of technical field auxiliary equipment of control pressure size.
The background technology pressure cooker has become huge numbers of families' important cooking instrument, and it has digestion time weak point, energy savings, advantage such as easy to operate, liked by broad masses.But pressure limiting valve on the pressure cooker and fuse sheet flame-arrester vent plug stop up easily, the time have the security incident of pressure cooker blast and so on to take place.For this reason, though people have taked measures such as increase fuse sheet flame-arrester vent plug quantity and increase air inlet safety net, never thoroughly resolve the easy blockage problem of pressure cooker pressure limiting valve.
The summary of the invention the purpose of this utility model provides a kind of anti-clogging pressure cooker pressure limiting valve, accomplishes to dredge automatically inlet channel, thoroughly eradicates the foreign matter blockage problem.
Technical scheme is in pressure cooker pressure limiting valve body cavity fly rod to be installed.During normal operating conditions, fly rod is suspended in the body cavity under the support of steam impringement power in pot, and half ensconces the air inlet grill of its lower end in the valve body, and half exposes outside the valve body.When the air inlet grill part of exposing valve body was stopped up by foreign matter, steam impringement power was eliminated, fly rod since the own wt effect to bottom offset, the instantaneous valve body that exposes of air inlet grill part that former plant valve body is interior.Steam enters in fly rod and the valve body suddenly in the pot, causes that fly rod rises to all to enter in the valve body or produce suddenly to vibrate.Fly rod rise suddenly or the process vibrated in, the foreign matter on the air inlet grill will be wiped off by the valve body lower end edge or be shaken and takes off, thereby reach the purpose of mediation automatically.
Compared with prior art, characteristics of the present utility model are to dredge inlet channel automatically, prevent from reliably to stop up, and thoroughly stop the pressure cooker explosion accident that causes because of obstruction, protection people life property safety.
Description of drawings Fig. 1 is an anti-clogging pressure cooker pressure limiting valve master TV structure schematic diagram
Fig. 2 is that fly rod air inlet grill A is to cutaway view Amplified image.
The specific embodiment is described concrete structure of the present utility model and operation principle in detail below in conjunction with drawings and Examples.
As shown in the figure, the utility model comprises with nut 1 and is fixed on valve body 2 on the pressure cooker pot cover 10, bell jar type valve gap 3 is placed on the valve body 2, difference is that valve body 2 inner chambers are broad in the middle, two is little, there are the last conical surface 21 and the following conical surface 22 in the inner chamber middle part, the fly rod 4 that is positioned in valve body 2 inner chambers is also broad in the middle, two is little, have on the middle part hammer body 41 of fly rod 4 respectively and the last conical surface 21, the following conical surface 22 corresponding conical surface 42 and the following conical surfaces 43 gone up, even vertical distribution has air slot 44 around the middle part hammer body 41, the horizontal gas port 45 of air slot 44 on the last conical surface 42 communicates with the top escape pipe 46 of fly rod 4, in the bottom air inlet pipe 47 upper end cavitys of fly rod 4 horizontal gas port 48 is arranged, air inlet pipe 47 lower ends are air inlet grill 49.
Operation principle is as follows: under the normal operating conditions, promptly when steam pressure meets or exceeds specified pressure in the pot, steam pressure rises fly rod 4, at this moment steam enters air inlet pipe 47 upper end cavitys through air inlet grill 49, again along horizontal gas port 48, valve body 2 lower cavity, air slot 44 on the hammer body 41 of middle part, horizontal gas port 45, escape pipe 46 impulsion bell jar type valve gaps 3 and outwards exhaust, because steam is to the impulsive force of middle part hammer body 41 and the mutual balanced action of fly rod 4 deadweights, fly rod 4 is suspended in valve body 2 inner chambers, in air inlet grill 49 half plant valve body 2 of fly rod 4 lower ends, half exposes outside the valve body 2.
When the part outside air inlet grill 49 exposes valve body 2 is stopped up by foreign matter, owing to lost the impulsive force of steam to middle part hammer body 41, fly rod 4 moves down under the effect of own wt, the instantaneous valve body 2 that exposes of part in the air inlet grill 49 former plant valve bodies 2, at this moment steam suddenly from the air inlet grill 49 that newly exposes valve body 2 not blocking portion pour air inlet pipe 47 upper end cavitys, the instant impact of its burst rises to fly rod 4 suddenly and all enters in the valve body 2, and the conical surface on valve body 2 inner chambers 21 is produced impact.In the process in fly rod 4 all enters valve body 2, the lower limb of valve body 2 will scrape the foreign matter that is blocked on the air inlet grill 49.Meanwhile, under the acting in conjunction that the anti-force and the fly rod 4 of the conical surface 21 on valve body 2 inner chambers are conducted oneself with dignity, fly rod 4 will move down and two kinds of situations may occur: a kind of is that foreign matter on the air inlet grill 49 is scraped, promptly eliminated clogging, 4 of fly rods recover normal duty, and promptly fly rod 4 is suspended in valve body 2 inner chambers; Another kind is that the foreign matter on the air inlet grill 49 is not scraped totally, clogging is still arranged, fly rod 4 moves down continuing in this case, when moving down into air inlet grill 49 blocking portion not exposing valve body 2, steam takes place once more enter fly rod 4 suddenly, the instant impact of burst rises fly rod 4 suddenly and all enters in the valve body 2, and the conical surface on valve body 2 inner chambers 21 is produced the phenomenon of impacting.Said process will go round and begin again, wiped off or by till being shaken up to the foreign matter on the air inlet grill 49, when promptly clogging eliminates till.
In order to prevent big food roof pressure fly rod 4, present embodiment is that protection network 11 has been settled in pot cover 10 inboards below valve body 2.
Claims (1)
1, a kind of anti-clogging pressure cooker pressure limiting valve, comprise with nut (1) and be fixed on valve body (2) on the pressure cooker pot cover, bell jar type valve gap (3) is placed on the valve body (2), it is characterized in that valve body (2) inner chamber is broad in the middle, two is little, there are the last conical surface (21) and the following conical surface (22) in the inner chamber middle part, the fly rod (4) that is positioned in valve body (2) inner chamber is also broad in the middle, two is little, has on the middle part hammer body (41) of fly rod (4) respectively and the last conical surface (21), the corresponding conical surface (42) and the following conical surface (43) gone up of the following conical surface (22), the even all around vertical distribution of middle part hammer body (41) has air slot (44).The horizontal gas port (45) of air slot (44) on the last conical surface (42) communicates with the top escape pipe (46) of fly rod (4), in bottom air inlet pipe (47) the upper end cavity of fly rod (4) horizontal gas port (48) arranged, and air inlet pipe (47) lower end is air inlet grill (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276926 CN2552439Y (en) | 2002-07-20 | 2002-07-20 | Anti-blocking pressure-limiting valve for pressure-cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276926 CN2552439Y (en) | 2002-07-20 | 2002-07-20 | Anti-blocking pressure-limiting valve for pressure-cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2552439Y true CN2552439Y (en) | 2003-05-28 |
Family
ID=33740672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02276926 Expired - Fee Related CN2552439Y (en) | 2002-07-20 | 2002-07-20 | Anti-blocking pressure-limiting valve for pressure-cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2552439Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307501A (en) * | 2009-02-05 | 2012-01-04 | 希力特威克有限两合公司 | Operating valve |
-
2002
- 2002-07-20 CN CN 02276926 patent/CN2552439Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307501A (en) * | 2009-02-05 | 2012-01-04 | 希力特威克有限两合公司 | Operating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |