CN114732277A

CN114732277A - Pressure cooker pressure relief safety structure

Info

Publication number: CN114732277A
Application number: CN202111607103.0A
Authority: CN
Inventors: 叶秀熊; 吴俊�
Original assignee: Zhejiang Yongda Stainless Steel Manufacture Co ltd
Current assignee: Zhejiang Yongda Stainless Steel Manufacture Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-07-12
Anticipated expiration: 2041-12-27
Also published as: CN114732277B

Abstract

The invention discloses a pressure relief safety structure of a pressure cooker, relating to the technical field of pressure cookers. The air outlet and pressure relief mechanism can perform normal air exhaust operation, when air pressure is too high, the four high-pressure pushing mechanisms can move, so that the four space adjusting mechanisms adjust the space, the pressure is reduced due to the increase of the space, the four auxiliary air exhaust mechanisms perform auxiliary air exhaust simultaneously, the pressure is effectively reduced, meanwhile, when the pressure changes, the gear and rack transmission mechanism can be driven to transmit, so that the cleaning mechanism is driven to clean the filtering mechanism, the filtering mechanism is prevented from being blocked, the air exhaust effect is prevented from being influenced, when the cleaning mechanism is cleaned, impurities cleaned by the cleaning mechanism can be bidirectionally discharged through the two discharging mechanisms, and meanwhile, when the materials are not discharged through the two rotation preventing mechanisms, the position of the cleaning mechanism is fixed, so that the cleaning effect is improved.

Description

Pressure relief safety structure of pressure cooker

Technical Field

The invention relates to the technical field of pressure cookers, in particular to a pressure relief safety structure of a pressure cooker.

Background

Pressure cookers, also called pressure cookers, are cookers of kitchens, and are mainly used for cooking food materials, and apply pressure to water to enable the water to reach higher temperature without boiling so as to accelerate the efficiency of stewing and cooking food.

The pressure release valve is adopted to mostly carry out the pressure release for current pressure cooker, in the use, generally can set up the filter screen and prevent that the pressure release valve from blockking up, but in the use, because impurity can be taken away when gas outgoing, the condition of blockking up still can appear, and in case the jam will make pressure increase to the condition of explosion appears easily, consequently, this application has proposed a pressure cooker pressure release safety structure and has satisfied the demand.

Disclosure of Invention

An object of the application is to provide a pressure cooker pressure relief safety structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a pressure cooker pressure release safety structure, includes the pot cover, the bottom central point of pot cover puts and installs the pressure relief mechanism of giving vent to anger, the lateral part of the pressure relief mechanism of giving vent to anger installs four high-pressure pushing mechanism that evenly set up, four high-pressure pushing mechanism keeps away from the lateral part of the pressure relief mechanism of giving vent to anger all installs space adjustment mechanism and supplementary exhaust mechanism, filter equipment is installed to space adjustment mechanism's bottom, filter equipment's central point puts and installs clean mechanism, clean mechanism pass through rack and pinion drive mechanism with the pressure relief mechanism of giving vent to anger connects, clean structural installation have two prevent changeing mechanism and two arrange material mechanism, two arrange material mechanism and prevent changeing the cooperation installation of mechanism with two respectively.

By means of the structure: normal exhaust operation can be carried out through the pressure release mechanism of giving vent to anger, when atmospheric pressure is too big, can make four high-pressure pushing mechanism remove, thereby make four space adjustment mechanism adjust the space, make pressure reduce because the increase in space, make four supplementary exhaust mechanism assist the exhaust simultaneously, effectually step down, when pressure changes, can drive gear rack and pinion drive mechanism and carry out the transmission, thereby it cleans filtering mechanism to drive cleaning mechanism, prevent that filtering mechanism from blockking up the influence exhaust effect, when cleaning mechanism is clean, discharge the impurity that cleaning mechanism cleaned out that can be two-way through two row material mechanisms, prevent simultaneously that rotation mechanism can not arrange the material through two simultaneously, make cleaning mechanism fixed position, thereby promote clean effect.

Preferably, the air outlet pressure relief mechanism comprises a pressure relief post, an installation head, four connecting rods, four sliding rods and four pressure relief springs, wherein a pressure relief hole is formed in the center of the bottom side of the cooker cover, the pressure relief post is slidably installed in the pressure relief hole, one end of the pressure relief post penetrates through the pressure relief hole and is provided with the installation head, the side part and the bottom of the installation head are provided with L-shaped pressure relief holes, the top end of each L-shaped pressure relief hole is located in the pressure relief hole, the four connecting rods are uniformly installed on the side part of the pressure relief post, the tops of the four connecting rods are respectively provided with a sliding hole, the four sliding rods are respectively slidably installed in the four sliding holes, the four pressure relief springs are respectively sleeved on the four sliding rods, the two ends of each pressure relief spring are respectively installed on the inner wall of the bottom side of the cooker cover and the side part of the connecting rod close to the pressure relief spring, the four connecting rods are respectively matched with the four high-pressure pushing mechanisms.

Further, it is fixed with the pressure cooker with the pot lid, can make the pressure release post rebound when pressure rises, and the pressure release post removes and drives four connecting rods and installation head and remove, and four connecting rods remove and make four pressure release springs compress, and when pressure reachd a definite value, the top in L shape pressure release hole communicates with each other with the external world to exhaust, thereby carry out normal use.

Preferably, high pressure pushing mechanism includes T shape slide rail, slide, rotation post, rectangle piston, T shape slide rail install in on the bottom side inner wall of pot cover, T shape spout has been seted up to the lateral part of slide, T shape slide rail slidable mounting in the T shape spout, inclined hole and vertical hole have been seted up to the lateral part of slide, the inclined hole with the vertical hole communicates, the shifting chute has been seted up to the bottom of slide, the shifting chute respectively with the inclined hole vertical hole communicates mutually, the connecting rod is located in the shifting chute, vertical downthehole rotation post of installing, the connecting rod rotate cup joint in on the rotation post, four the top of inclined hole all is close to the pressure release post, the rectangle piston with space adjustment mechanism with supplementary exhaust mechanism cooperation installation.

Further, four connecting rods move and drive four rotation posts to move in four vertical holes respectively, when the pressure of pot cover is too big, four rotation posts get into four inclined holes respectively this moment, thereby extrude the inner wall of four inclined holes, thereby make four slides slide on four T shape slide rails respectively, four slides remove and drive four rectangle pistons respectively and remove, thereby can make drive rectangle piston to remove at pressure is too big, when guaranteeing normal use effect, also can satisfy only and assist the step-down under the high pressure.

Preferably, the space adjusting mechanism includes a cross block installed at the center of the inner wall of the bottom side of the pot cover, a circular hole is formed at the bottom of the cross block, the pressure release column is located in the circular hole, piston grooves are formed in the inner walls of four sides of the circular hole, four rectangular pistons are respectively slidably installed in the four piston grooves, the distance between the inner wall of one side of the piston groove far away from the pressure release column and the side of the rectangular piston far away from the pressure release column is greater than the horizontal length of the inclined hole along the direction of the connecting rod, and the bottom of the cross block is connected with the filtering mechanism.

Further, the four rectangular pistons slide in the four piston grooves, respectively, so that the space of the four rectangular pistons near the pressure relief column is increased, and the pressure is reduced due to the increase in the space.

Preferably, the auxiliary exhaust mechanism comprises four groups of exhaust holes formed in the inner wall of the bottom side of the pot cover, the four groups of exhaust holes correspond to the four piston grooves respectively, and the tops of the four rectangular pistons correspond to the four groups of exhaust holes respectively.

Further, four rectangle pistons remove and make four groups of exhaust holes spill to assist the exhaust, effectually step down, and along with the constantly increasing of pressure, the number that the exhaust hole spills increases gradually, thereby can be according to the quantity in the pressure automatically regulated exhaust hole of difference.

Preferably, the filtering mechanism comprises a filter screen and a fixing ring, the fixing ring is installed on the bottom of the cross block, the fixing ring corresponds to the position of the round hole, the filter screen is installed on the bottom of the fixing ring, a rotating hole is formed in the center of the top of the filter screen, the rotating hole corresponds to the position of the pressure relief column, and the cleaning mechanism is rotatably installed in the rotating hole.

Further, through the setting of filter screen, can effectually prevent that impurity from getting into that L shape pressure release is downthehole to be convenient for exhaust.

Preferably, clean mechanism include pivot, rolling disc, installation pole, scrape the pole, turn round post, torsional spring, swivel ring, the pivot rotate install in it is downthehole to rotate, the rolling disc with the installation pole is connected, the hole of wrench movement has been seted up at the top of installation pole, turn round the post rotate install in it is downthehole to twist, turn round the one end of post with the lateral part of scraping the pole is connected, the lateral part of turning round the post is passed through the torsional spring with the inner wall connection of swivel ring, the lateral part of swivel ring connect in on the lateral part of installation pole, two prevent changeing the mechanism install in on the installation pole, two arrange material mechanism install in scrape on the pole, the pivot with rack and pinion drive mechanism connects.

Further, gear revolve drives pivot and rolling disc and rotates, and the rolling disc rotates and drives the installation pole and scrape the pole rotation to clean, prevent that the filter screen from blockking up the influence exhaust step-down.

Preferably, the gear-rack transmission mechanism comprises a gear, two guide rods, an L-shaped block, a pulling rod, a rack and a connecting block, the gear is installed at one end, away from the rotating disc, of the rotating shaft, two guide holes are formed in the lateral portion of the L-shaped block, the two guide rods are respectively installed in the two guide holes in a sliding mode, the two ends of the two guide rods are connected with the lateral wall of the fixing ring, the rack is installed at the lateral portion of the L-shaped block and meshed with the gear, the bottom of the L-shaped block is connected with the connecting block in a rotating mode through the pulling rod, and the connecting block is far away from the lateral portion of the pulling rod and connected with the bottom of the pressure relief column.

Further, when pressure changes, the pressure increasing enables the pressure release column to move upwards, when the pressure decreases, the pressure release column moves downwards under the action force of the four pressure release springs, the pressure release column moves up and down to drive the linking block to move, the linking block moves to drive the pulling rod to rotate, the pulling rod rotates to drive the L-shaped block to move, the L-shaped block moves to drive the rack to move, and the rack moves to drive the gear to rotate, so that transmission can be performed when the pressure changes.

Preferably, the anti-rotation mechanism comprises a T-shaped fixture block, a connecting block and a connecting spring, a T-shaped anti-rotation groove is formed in the top of the mounting rod, the T-shaped fixture block is slidably mounted in the T-shaped anti-rotation groove, the connecting block is mounted on the lateral portion of the T-shaped fixture block, the connecting block passes through the connecting spring and is connected with the lateral portion of the mounting rod, an extrusion chute is formed in the lateral portion of the T-shaped fixture block and is matched with the discharging mechanism for mounting, and the extrusion chute is close to the lateral portion of the scraping rod and is contacted with the scraping rod.

Furtherly, when the extrusion post separates with the stripper plate, make under the effort of torsional spring and scrape the pole reconversion to it is spacing by two T shape fixture blocks, when scraping the pole and rotating, scrape the pole and can not remove, be convenient for clear up.

Preferably, it includes two flexible posts, expanding spring, stripper plate and compression leg to arrange material mechanism, the extrusion hole has been seted up at the top of scraping the pole, two flexible post with expanding spring's one end all install in on one side inner wall of extrusion hole, two flexible post with expanding spring's the other end all with the lateral part of stripper plate is connected, the stripper plate with the inner wall of extrusion chute contacts, the compression leg install in on the lateral part of filter screen, the stripper plate with the position of stripper plate is corresponding, the torsion leg is located T shape fixture block with position between the flexible post.

Further, the stripper plate removes the inner wall that extrudees the chute, and then makes T shape fixture block rebound and the lateral part of scraping the pole part, scrapes the pole this moment and can rotate, and the extrusion post continues to extrude the stripper plate and makes to scrape the pole and use turning round the post as the center rotation, and the torsional spring takes place deformation to it will scrape the impurity together and push out outside the filter screen to make.

To sum up, the technical effect and the advantage of this application:

1. the air-discharging and pressure-releasing device is reasonable in structure, normal air-discharging operation can be carried out through the air-discharging and pressure-releasing mechanism, when air pressure is too high, the four high-pressure pushing mechanisms can move, so that the four space adjusting mechanisms adjust the space, the pressure is reduced due to the increase of the space, meanwhile, the four auxiliary air-discharging mechanisms can carry out auxiliary air-discharging, the pressure is effectively reduced, meanwhile, when the pressure changes, the gear and rack transmission mechanism can be driven to carry out transmission, so that the cleaning mechanism is driven to clean the filtering mechanism, the filtering mechanism is prevented from being blocked, the air-discharging effect is prevented from being influenced, when the cleaning mechanism is cleaned, impurities cleaned by the cleaning mechanism can be discharged in a two-way mode through the two material-discharging mechanisms, and meanwhile, when the materials are not discharged, the position of the cleaning mechanism is fixed through the two material-preventing mechanisms, so that the cleaning effect is improved;

2. according to the invention, when the pressure of the cooker cover is overlarge, the four rotating columns respectively enter the four inclined holes to extrude the inner walls of the four inclined holes, so that the four sliding plates respectively slide on the four T-shaped sliding rails, and the four sliding plates respectively drive the four rectangular pistons to move by moving, so that the rectangular pistons can be driven to move by the overlarge pressure, and the auxiliary pressure reduction can be realized only under high pressure while the normal use effect is ensured;

3. according to the invention, when the pressure is overlarge, the four rectangular pistons respectively slide in the four piston grooves, so that the space of the four rectangular pistons close to the pressure relief column is increased, the pressure is reduced due to the increase of the space, and meanwhile, the number of the vent holes which leak is gradually increased along with the continuous increase of the pressure, so that the number of the vent holes can be automatically adjusted according to different pressures;

4. according to the automatic cleaning device, when pressure changes, the pressure is increased to enable the pressure relief column to move upwards, when the pressure is reduced, the pressure relief column moves downwards under the action force of four pressure relief springs, the pressure relief column moves up and down to drive the connecting block to move, the connecting block moves to drive the pulling rod to rotate, the pulling rod rotates to drive the L-shaped block to move, the L-shaped block moves to drive the rack to move, the rack moves to drive the gear to rotate, so that transmission can be performed when the pressure changes, the gear rotates to drive the rotating shaft and the rotating disc to rotate, the rotating disc rotates to drive the mounting rod and the scraping rod to rotate, so that automatic cleaning is performed, and the filter screen is prevented from being blocked to influence exhaust and depressurization;

5. in the discharging process, the extrusion plate moves to extrude the inner wall of the extrusion chute, so that the T-shaped clamping blocks move upwards and are separated from the side part of the scraping rod, at the moment, the scraping rod can rotate, the extrusion column continuously extrudes the extrusion plate, so that the scraping rod rotates around the torsion column, and the torsion spring deforms, so that the scraping rod pushes out the scraped impurities out of the filter screen, and when the extrusion column is separated from the extrusion plate, the scraping rod is restored to the original state under the action force of the torsion spring, so that the two T-shaped clamping blocks limit the position, and when the scraping rod rotates, the scraping rod cannot move, so that the cleaning is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a pressure relief safety structure of a pressure cooker in this embodiment;

fig. 2 is a schematic view of a first-view internal three-dimensional structure of the pressure cooker pressure relief safety structure in this embodiment;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic structural view showing the connection of the air outlet pressure relief mechanism and four high pressure pushing mechanisms;

FIG. 5 is a schematic diagram illustrating a second perspective internal structure of the pressure relief safety structure of the pressure cooker in this embodiment;

FIG. 6 is a schematic view of a portion of the structure of FIG. 5;

FIG. 7 is a schematic structural view of the cleaning mechanism connected to two anti-rotation mechanisms and two discharging mechanisms;

fig. 8 is a schematic top view of the pressure cooker pressure relief safety structure in this embodiment.

In the figure: 1. a pot cover; 2. a cross block; 3. a filter screen; 4. a pressure relief column; 5. a mounting head; 6. an L-shaped pressure relief hole; 7. a connecting rod; 8. a slide bar; 9. a pressure relief spring; 10. a T-shaped slide rail; 11. a slide plate; 12. an inclined hole; 13. a vertical hole; 14. rotating the column; 15. a rectangular piston; 16. a joining block; 17. pulling a rod; 18. a guide bar; 19. an L-shaped block; 20. a rack; 21. a gear; 22. rotating the disc; 23. mounting a rod; 24. a scraping rod; 25. extruding the column; 26. a T-shaped fixture block; 27. extruding the chute; 28. connecting blocks; 29. twisting the column; 30. a torsion spring; 31. a compression plate; 32. a telescopic column; 33. a tension spring; 34. a connecting spring; 35. and (4) exhausting holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-8, a pressure cooker pressure relief safety structure, including pot cover 1, the bottom central point of pot cover 1 puts and installs the pressure relief mechanism of giving vent to anger, four high-pressure pushing mechanism that evenly set up are installed to the lateral part of the pressure relief mechanism of giving vent to anger, four high-pressure pushing mechanism keep away from the lateral part of the pressure relief mechanism of giving vent to anger and all install space adjustment mechanism and supplementary exhaust mechanism, filter mechanism is installed to space adjustment mechanism's bottom, filter mechanism's central point puts and installs clean mechanism, clean mechanism passes through rack and pinion drive mechanism and is connected with the pressure relief mechanism of giving vent to anger, clean structural two are installed and are prevented changeing mechanism and two and arrange material mechanism, two are arranged material mechanism and are installed with two rotation prevention mechanism cooperation respectively.

The air outlet and pressure relief mechanism comprises a pressure relief column 4, a mounting head 5 and four connecting rods 7, four slide bars 8 and four pressure release springs 9, the pressure release hole has been seted up to the bottom side central point of

pot cover

1, 4 slidable mounting of pressure release post are in the pressure release hole, the one end of pressure release post 4 runs through the pressure release hole and installs installation head 5, L shape pressure release hole 6 has been seted up to installation head 5's lateral part and bottom, the top of L shape pressure release hole 6 is located the pressure release hole, four connecting rods 7 are evenly installed on the lateral part of pressure release post 4, the sliding hole has all been seted up at the top of four connecting rods 7, four slide bars 8 slidable mounting respectively are in four sliding holes, four pressure release springs 9 cup joint respectively on four slide bars 8, the bottom side inner wall in pot cover 1 is installed respectively at the both ends of pressure release springs 9, on the lateral part of connecting rod 7 that is close to mutually with pressure release springs 9, four connecting rods 7 respectively with four high-pressure pushing mechanism cooperation installations.

Fix pot cover 1 and pressure cooker, make pressure release post 4 rebound when pressure rises, pressure release post 4 removes and drives four connecting rods 7 and installation head 5 and remove, and four connecting rods 7 remove and make four pressure release springs 9 compress, and when pressure reachd a definite value, the top of L shape pressure release hole 6 communicates with each other with the external world to exhaust, thereby carry out normal use.

High pressure pushing mechanism includes T shape slide rail 10, slide 11, the post 14 rotates, rectangular piston 15, T shape slide rail 10 is installed on the bottom side inner wall of pot cover 1, T shape spout has been seted up to the lateral part of slide 11, T shape slide rail 10 slidable mounting is in T shape spout, inclined hole 12 and vertical hole 13 have been seted up to the lateral part of slide 11, inclined hole 12 and vertical hole 13 are linked together, the shifting chute has been seted up to the bottom of slide 11, the shifting chute respectively with inclined hole 12, vertical hole 13 is linked together, connecting rod 7 is located the shifting chute, install the post 14 that rotates in vertical hole 13, connecting rod 7 rotates and cup joints on rotating post 14, the top of four inclined holes 12 all is close to pressure release post 4, rectangular piston 15 is installed with space adjustment mechanism and supplementary exhaust mechanism cooperation.

Four connecting rods 7 remove and drive four and rotate post 14 and remove respectively in four vertical holes 13, when the pressure of pot cover 1 was too big, four this moment rotate post 14 and get into four inclined holes 12 respectively, thereby extrude the inner wall of four inclined holes 12, thereby make four slides 11 slide on four T shape slide rails 10 respectively, four slides 11 remove and drive four rectangle pistons 15 respectively and remove, thereby can make drive rectangle piston 15 remove at pressure too big, when guaranteeing normal use effect, also can satisfy only and assist the step-down under the high pressure.

Space adjustment mechanism is including installing in the cross piece 2 that 1 bottom side inner wall central point of pot cover put, the round hole has been seted up to the bottom of cross piece 2, pressure release post 4 is located the round hole, the piston groove has all been seted up to four side inner walls of round hole, four rectangle pistons 15 respectively slidable mounting in four piston grooves, the piston groove is kept away from one side inner wall of pressure release post 4 and the distance of the lateral part of pressure release post 4 is kept away from with rectangle piston 15 and is greater than the horizontal length of inclined hole 12 along connecting rod 7 direction, the bottom of cross piece 2 is connected with filter mechanism.

The four rectangular pistons 15 slide in the four piston grooves, respectively, so that the space of the four rectangular pistons 15 near the pressure relief cylinder 4 is increased, and the pressure is reduced due to the increase in the space.

The auxiliary exhaust mechanism comprises four groups of exhaust holes 35 arranged on the inner wall of the bottom side of the pot cover 1, the four groups of exhaust holes 35 correspond to the four piston grooves respectively, and the tops of the four rectangular pistons 15 correspond to the four groups of exhaust holes 35 respectively.

Four rectangle pistons 15 remove and make four groups of exhaust holes 35 spill to assist the exhaust, effectually step down, and along with the continuous increase of pressure, the number that exhaust hole 35 spills increases gradually, thereby can be according to the quantity of different pressure automatically regulated exhaust holes 35.

The filter mechanism comprises a filter screen 3 and a fixing ring, the fixing ring is installed on the bottom of the cross block 2 and corresponds to the position of the round hole, the filter screen 3 is installed on the bottom of the fixing ring, a rotating hole is formed in the center of the top of the filter screen 3 and corresponds to the position of the pressure relief column 4, and the cleaning mechanism is rotatably installed in the rotating hole.

Through the setting of filter screen 3, can effectually prevent that impurity from getting into in L shape pressure release hole 6 to be convenient for exhaust.

Clean mechanism includes the pivot, the rolling disc 22, installation pole 23, scrape the pole 24, turn round post 29, torsional spring 30, the rotating ring, the pivot is rotated and is installed in rotating the hole, the rolling disc 22 is connected with installation pole 23, the hole of wriggling has been seted up at the top of installation pole 23, turn round post 29 and rotate and install in wriggling the hole, turn round the one end of post 29 and be connected with the lateral part of scraping pole 24, the lateral part of turning round post 29 passes through the inner wall connection of torsional spring 30 with the rotating ring, the lateral part of rotating ring is connected on the lateral part of installation pole 23, two prevent that the mechanism is installed on installation pole 23, two arrange the material mechanism and install on scraping pole 24, the pivot is connected with rack and pinion drive mechanism.

The gear 21 rotates to drive the rotating shaft and the rotating disc 22 to rotate, and the rotating disc 22 rotates to drive the mounting rod 23 and the scraping rod 24 to rotate, so that cleaning is performed, and the filter screen 3 is prevented from being blocked to influence exhaust and pressure reduction.

The gear and rack transmission mechanism comprises a gear 21, two guide rods 18, an L-shaped block 19, a pulling rod 17, a rack 20 and a linking block 16, the gear 21 is installed at one end of the rotating shaft far away from the rotating disc 22, two guide holes are formed in the lateral part of the L-shaped block 19, the two guide rods 18 are respectively installed in the two guide holes in a sliding mode, two ends of the two guide rods 18 are connected with the lateral wall of the fixing ring, the rack 20 is installed at the lateral part of the L-shaped block 19, the rack 20 is meshed with the gear 21, the bottom of the L-shaped block 19 is rotatably connected with the linking block 16 through the pulling rod 17, and the lateral part of the linking block 16 far away from the pulling rod 17 is connected with the bottom of the pressure release column 4.

When pressure changes, pressure grow makes pressure release post 4 upwards remove, and when pressure becomes little, makes pressure release post 4 downstream under four pressure release spring 9's effort, and pressure release post 4 reciprocates and drives linking block 16 and remove, links up block 16 and removes and drive pulling rod 17 and rotate, and pulling rod 17 rotates and drives L-shaped piece 19 and remove, and L-shaped piece 19 removes and drives rack 20 and remove, and rack 20 removes and drives gear 21 and rotate to can carry out the transmission when pressure changes.

The anti-rotation mechanism comprises a T-shaped fixture block 26, a connecting block 28 and a connecting spring 34, a T-shaped anti-rotation groove is formed in the top of the mounting rod 23, the T-shaped fixture block 26 is slidably mounted in the T-shaped anti-rotation groove, the connecting block 28 is mounted on the side portion of the T-shaped fixture block 26, the connecting block 28 is connected with the side portion of the mounting rod 23 through the connecting spring 34, an extrusion chute 27 is formed in the side portion of the T-shaped fixture block 26, the extrusion chute 27 is mounted in cooperation with the discharging mechanism, and the side portion, close to the scraping rod 24, of the extrusion chute 27 is in contact with the scraping rod 24.

When the extrusion column 25 is separated from the extrusion plate 31, the scraping rod 24 is restored under the action force of the torsion spring 30, so that the scraping rod is limited by the two T-shaped clamping blocks 26, and when the scraping rod 24 rotates, the scraping rod 24 cannot move, and the cleaning is convenient.

Discharge mechanism includes two flexible posts 32, expanding spring 33, stripper plate 31 and squeeze post 25, the extrusion hole has been seted up at the top of scraping pole 24, the one end of two flexible posts 32 and expanding spring 33 is all installed on one side inner wall in extrusion hole, the other end of two flexible posts 32 and expanding spring 33 all is connected with the lateral part of stripper plate 31, stripper plate 31 contacts with the inner wall of extrusion chute 27, the squeeze post 25 is installed on the lateral part of filter screen 3, the position of stripper plate 31 is corresponding with stripper plate 25, it is located position between T-shaped fixture block 26 and the flexible post 32 to turn round post 29.

The extrusion plate 31 moves to extrude the inner wall of the extrusion chute 27, so that the T-shaped clamping block 26 moves upwards and is separated from the side part of the scraping rod 24, at the moment, the scraping rod 24 can rotate, the extrusion column 25 continuously extrudes the extrusion plate 31, the scraping rod 24 rotates around the torsion column 29, and the torsion spring 30 deforms, so that the scraping rod 24 can scrape impurities together and push out of the filter screen 3.

The working principle of the invention is as follows: when the pressure cooker is used, the cooker cover 1 is fixed with the pressure cooker, when the pressure rises, the pressure release column 4 moves upwards, the pressure release column 4 moves to drive the four connecting rods 7 and the mounting head 5 to move, the four connecting rods 7 move to compress the four pressure release springs 9, the four connecting rods 7 move to drive the four rotating columns 14 to move in the four vertical holes 13 respectively, when the pressure reaches a certain value, the top of the L-shaped pressure release hole 6 is communicated with the outside so as to exhaust, when the pressure of the cooker cover 1 is overlarge, the four rotating columns 14 enter the four inclined holes 12 respectively so as to extrude the inner walls of the four inclined holes 12, so that the four sliding plates 11 slide on the four T-shaped sliding rails 10 respectively, the four sliding plates 11 move to drive the four rectangular pistons 15 to move respectively, the four rectangular pistons 15 slide in the four piston grooves respectively, so that the space of the four rectangular pistons 15 close to the pressure release column 4 is increased, so that the pressure is reduced due to the increase of the space, and simultaneously, the four rectangular pistons 15 move to make the four groups of exhaust holes 35 leak, so that auxiliary exhaust is performed, and pressure reduction is effectively performed.

Through filter screen 3's setting, can effectually prevent that impurity from getting into in the L shape pressure release hole 6, and when pressure changes, the pressure grow makes pressure release post 4 upwards remove, when pressure diminishes, make pressure release post 4 move down under four pressure release spring 9's effort, pressure release post 4 reciprocates and drives linking piece 16 and remove, linking piece 16 removes and drives pull rod 17 and rotate, pull rod 17 rotates and drives L-shaped piece 19 and remove, L-shaped piece 19 removes and drives rack 20 and remove, rack 20 removes and drives gear 21 and rotates, gear 21 rotates and drives pivot and rolling disc 22 and rotate, rolling disc 22 rotates and drives installation pole 23 and scraper bar 24 and rotate, thereby clean, prevent that filter screen 3 from blockking up the influence exhaust step-down.

The scraping rod 24 scrapes impurities on the filter screen 3 together, the scraping rod 24 rotates to drive the extrusion plate 31 to rotate, when the extrusion plate 31 contacts with the extrusion column 25, the extrusion plate 31 is extruded by the extrusion column 25, the two telescopic columns 32 and the telescopic spring 33 contract, the telescopic spring 33 deforms, the extrusion plate 31 moves to extrude the inner wall of the extrusion chute 27, further, the T-shaped fixture blocks 26 move upwards to be separated from the side part of the scraping rod 24, at the moment, the scraping rod 24 can rotate, the extrusion column 25 continues to extrude the extrusion plate 31 to enable the scraping rod 24 to rotate around the torsion column 29, the torsion spring 30 deforms, so that the scraping rod 24 pushes out the scraped impurities out of the filter screen 3, when the extrusion column 25 is separated from the extrusion plate 31, the scraping rod 24 is restored under the acting force of the torsion spring 30 to be limited by the two T-shaped fixture blocks 26, when the scraping rod 24 rotates, the scraping rod 24 cannot move, is convenient for cleaning.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a pressure cooker pressure release safety structure, includes pot cover (1), its characterized in that: the bottom central point of pot cover (1) puts and installs the pressure relief mechanism of giving vent to anger, four high-pressure pushing mechanism that evenly set up are installed to the lateral part of the pressure relief mechanism of giving vent to anger, four high-pressure pushing mechanism keeps away from give vent to anger pressure relief mechanism's lateral part and all installs space adjustment mechanism and supplementary exhaust mechanism, filtering mechanism is installed to space adjustment mechanism's bottom, filtering mechanism's central point puts and installs clean mechanism, clean mechanism pass through rack and pinion drive mechanism with the pressure relief mechanism of giving vent to anger connects, install two on the clean structure and prevent changeing mechanism and two and arrange material mechanism, two it prevents changeing the mechanism cooperation installation with two respectively to arrange material mechanism.

2. The pressure relief safety structure of pressure cooker as claimed in claim 1, wherein: the air outlet pressure relief mechanism comprises a pressure relief column (4), an installing head (5), four connecting rods (7), four sliding rods (8) and four pressure relief springs (9), a pressure relief hole is formed in the center of the bottom side of the pot cover (1), the pressure relief column (4) is slidably installed in the pressure relief hole, one end of the pressure relief column (4) penetrates through the pressure relief hole and is provided with the installing head (5), L-shaped pressure relief holes (6) are formed in the side part and the bottom of the installing head (5), the top end of each L-shaped pressure relief hole (6) is located in each pressure relief hole, the four connecting rods (7) are uniformly installed on the side part of the pressure relief column (4), sliding holes are formed in the tops of the four connecting rods (7), the four sliding rods (8) are respectively slidably installed in the four sliding holes, and the four pressure relief springs (9) are respectively sleeved on the four sliding rods (8), two ends of the pressure relief spring (9) are respectively installed on the inner wall of the bottom side of the pot cover (1) and the side part, close to the pressure relief spring (9), of the connecting rod (7), and the four connecting rods (7) are respectively installed in a matched mode with the four high-pressure pushing mechanisms.

3. The pressure-relief safety structure of pressure cooker as claimed in claim 2, wherein: the high-pressure pushing mechanism comprises a T-shaped sliding rail (10), a sliding plate (11), a rotating column (14) and a rectangular piston (15), the T-shaped sliding rail (10) is installed on the inner wall of the bottom side of the pot cover (1), a T-shaped sliding groove is formed in the side portion of the sliding plate (11), the T-shaped sliding rail (10) is installed in the T-shaped sliding groove in a sliding mode, an inclined hole (12) and a vertical hole (13) are formed in the side portion of the sliding plate (11), the inclined hole (12) is communicated with the vertical hole (13), a moving groove is formed in the bottom of the sliding plate (11), the moving groove is respectively communicated with the inclined hole (12) and the vertical hole (13), the connecting rod (7) is located in the moving groove, the rotating column (14) is installed in the vertical hole (13), the connecting rod (7) is rotatably sleeved on the rotating column (14), the tops of the four inclined holes (12) are close to the pressure release column (4), the rectangular piston (15) is matched with the space adjusting mechanism and the auxiliary exhaust mechanism for installation.

4. The pressure relief safety structure of pressure cooker as claimed in claim 3, wherein: the space adjusting mechanism comprises a cross block (2) installed at the center of the inner wall of the bottom side of the pot cover (1), a round hole is formed in the bottom of the cross block (2), the pressure relief column (4) is located in the round hole, piston grooves are formed in the inner walls of four sides of the round hole, four rectangular pistons (15) are respectively installed in the four piston grooves in a sliding mode, the distance between the inner wall of one side, away from the pressure relief column (4), of each piston groove and the side, away from the pressure relief column (4), of each rectangular piston (15) is larger than the horizontal length of the inclined hole (12) along the direction of the connecting rod (7), and the bottom of the cross block (2) is connected with the filtering mechanism.

5. The pressure relief safety structure of pressure cooker as claimed in claim 3, wherein: the auxiliary exhaust mechanism comprises four groups of exhaust holes (35) formed in the inner wall of the bottom side of the pot cover (1), the four groups of exhaust holes (35) correspond to the four piston grooves respectively in position, and the tops of the four rectangular pistons (15) correspond to the four groups of exhaust holes (35) respectively in position.

6. The pressure relief safety structure of pressure cooker as claimed in claim 4, wherein: the filter mechanism comprises a filter screen (3) and a fixing ring, the fixing ring is installed on the bottom of the cross block (2), the fixing ring corresponds to the position of the round hole, the filter screen (3) is installed on the bottom of the fixing ring, a rotating hole is formed in the center of the top of the filter screen (3), the rotating hole corresponds to the position of the pressure relief column (4), and the cleaning mechanism is rotatably installed in the rotating hole.

7. The pressure relief safety structure of pressure cooker as claimed in claim 6, wherein: the cleaning mechanism comprises a rotating shaft, a rotating disc (22), a mounting rod (23), a scraping rod (24), a torsion column (29), a torsion spring (30) and a rotating ring, the rotating shaft is rotatably arranged in the rotating hole, the rotating disc (22) is connected with the mounting rod (23), the top of the mounting rod (23) is provided with a twisting hole, the twisting column (29) is rotatably mounted in the twisting hole, one end of the torsion column (29) is connected with the side part of the scraping rod (24), the side part of the torsion column (29) is connected with the inner wall of the rotating ring through the torsion spring (30), the side part of the rotating ring is connected to the side part of the mounting rod (23), the two anti-rotating mechanisms are mounted on the mounting rod (23), the two discharging mechanisms are mounted on the scraping rod (24), and the rotating shaft is connected with the gear rack transmission mechanism.

8. The pressure relief safety structure for pressure cooker as claimed in claim 7, wherein: the gear rack transmission mechanism comprises a gear (21), two guide rods (18), an L-shaped block (19), a pulling rod (17), a rack (20) and a connecting block (16), the gear (21) is arranged at one end of the rotating shaft far away from the rotating disc (22), two guide holes are formed in the side part of the L-shaped block (19), the two guide rods (18) are respectively and slidably arranged in the two guide holes, two ends of the two guide rods (18) are connected with the side wall of the fixing ring, the rack (20) is arranged on the side part of the L-shaped block (19), the rack (20) is meshed with the gear (21), the bottom of the L-shaped block (19) is rotationally connected with the connecting block (16) through the pulling rod (17), the side part of the connecting block (16) far away from the pulling rod (17) is connected with the bottom of the pressure relief column (4).

9. The pressure relief safety structure for pressure cooker as claimed in claim 7, wherein: prevent that favourable turn includes T shape fixture block (26), connecting block (28), connecting spring (34), T shape anti-rotation groove has been seted up at the top of installation pole (23), T shape fixture block (26) slidable mounting in the T shape anti-rotation inslot, connecting block (28) install in the lateral part of T shape fixture block (26), connecting block (28) pass through connecting spring (34) with the lateral part of installation pole (23) is connected, extrusion chute (27) have been seted up to the lateral part of T shape fixture block (26), extrusion chute (27) with arrange the cooperation of material mechanism and install, extrusion chute (27) are close to scrape the lateral part of pole (24) with scrape pole (24) and contact.

10. The pressure relief safety structure for pressure cooker as claimed in claim 9, wherein: arrange material mechanism and include two flexible post (32), expanding spring (33), stripper plate (31) and compression leg (25), scrape the top of pole (24) and seted up the extrusion hole, two flexible post (32) with the one end of expanding spring (33) all install in on one side inner wall of extrusion hole, two flexible post (32) with the other end of expanding spring (33) all with the lateral part of stripper plate (31) is connected, stripper plate (31) with the inner wall of extrusion chute (27) contacts, compression leg (25) install in on the lateral part of filter screen (3), compression leg (25) with the position of stripper plate (31) is corresponding, it is located to turn round post (29) T shape fixture block (26) with position between flexible post (32).