CN218105573U

CN218105573U - Rotary-closing type multifunctional pressure cooker

Info

Publication number: CN218105573U
Application number: CN202221411851.1U
Authority: CN
Inventors: 叶灿雄; 梁建秀; 黄志荣; 伍尚凯; 黄秋萍; 余敬源; 梁剑峰; 叶建华; 李广彬
Original assignee: Xinxing Xianfeng Stainless Steel Product Manufacturer Co ltd
Current assignee: Xinxing Xianfeng Stainless Steel Product Manufacturer Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-12-23
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a rotary multifunctional pressure cooker, which comprises a cooker body and a cooker cover, wherein the cooker cover is covered above the cooker body and comprises a pressure cover, a safety valve for exhausting and a cover; a buckling device is arranged between the pressure cover and the cooker body; the pressure cover and the cooker body rotate when the cover is rotated, and the buckling device is triggered to buckle the pressure cover and the cooker body; the safety valve automatically rises to release pressure when the pressure in the cooker reaches a set value; when the pressure in the cooker is overlarge, the rotary cover touches the safety valve, and the safety valve realizes stable air exhaust and pressure relief. This pressure cooker passes through the spiral of lid and closes, can one-key formula control pot cover and open and shut, reduces loaded down with trivial details operation and maloperation, and through the rotation of control knob lid, can trigger the relief valve, realizes the exhaust pressure release function or to realizing the pressurize function in the pot. The steel wire ring-shaped coil can fix the sealing ring, so that the sealing ring cannot touch the pot body, and the friction between the sealing ring and the pot edge is reduced to prevent the pressure cover from rotating difficultly.

Description

Rotary-closing type multifunctional pressure cooker

Technical Field

The utility model relates to a kitchen cooking utensil technical field especially relates to a spiral-close type multifunctional pressure cooker.

Background

In the market, some pressure cookers are easy to be in a half-open state with a cover, so that the cooker and the cover can not be buckled, and the pressure in the cooker is leaked; or the fire power is turned off because the pressure in the cooker is too high during the cooking, thereby causing safety accidents. The existing pressure cooker has a complex opening and closing mode, and can be operated only by matching two hands, so that the operation is inconvenient; some pressure cookers are too complex to be used by a user.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a rotary-closing multifunctional pressure cooker.

The utility model discloses a realize through following technical scheme: a rotary-closing multifunctional pressure cooker comprises a cooker body and a cooker cover, wherein the cooker cover is covered above the cooker body and comprises a pressure cover, a safety valve for exhausting and a cover; a buckling device is arranged between the pressure cover and the pot body; the cover is rotated, the pressure cover and the cooker body are rotated, and the buckling device is triggered to buckle the pressure cover and the cooker body; the safety valve automatically rises to release pressure when the pressure in the cooker reaches a set value; when the pressure in the cooker is overlarge, the cover is rotated to touch the safety valve, and the safety valve realizes stable air exhaust and pressure relief.

The pressure cooker can realize the locking or the loosening of the pressure cover and the cooker body by rotating the cover, and can complete the opening and closing operation by one hand; the safety valve can be triggered by controlling the rotation of the cover by a single hand, so that the functions of exhausting and relieving pressure are realized.

The buckling device comprises a first convex position, a first concave position, a second convex position and a second concave position; the first convex positions are formed by the outward bulge of the upper edge of the pot body, a plurality of first convex positions are arranged, and the first concave positions are formed between the adjacent first convex positions; the second convex positions are formed by downwards forming cover edges for buckling the pot body on the periphery of the pressure cover, inwards protruding and extending the lower part of the inner side of each cover edge, a plurality of second convex positions are arranged, the second concave positions are formed between every two adjacent second convex positions, and the second convex positions are matched with the first concave positions in shape; when the pot cover covers the pot body, the second convex position is aligned with the first concave position and put down, the first convex position and the second convex position are gradually placed in a staggered mode until the first convex position is located above the second convex position through rotating the pot cover, the screwing of the pot cover and the pot body is completed, and the first concave position is opposite to the second concave position. The pressure cover and the cooker body can be buckled through the overlapping between the convex positions of the pressure cover and the cooker body, and the pressure cover and the cooker body are buckled more tightly due to the increase of pressure during cooking.

An upward arched convex block is arranged on the upper side surface of the second convex position, an arc-shaped groove is formed between the convex block and the inner side of the cover edge of the pressure cover, and a sealing ring is arranged in the cover edge; the steel wire annular coil is arranged in the cover edge and is a circular ring formed by a circle of round steel wire surrounding the circumference, and the steel wire annular coil is clamped in the arc-shaped groove and clamped between the sealing ring and the inner wall of the cover edge; when the first convex position is embedded above the second convex position, the upper side of the first convex position props against the sealing ring, and the outer side of the first convex position props against the steel wire annular coil. The setting of the arc-shaped groove of the bump can fix the steel wire annular coil firmly, and the steel wire annular coil is in contact with the pot edge, so that the problem that the friction force is increased due to the fact that the sealing ring is in direct contact with the pot edge is solved. The setting of sealing washer, the gas tightness of multiplicable pan.

The safety valve comprises a gravity valve, an exhaust pipe and a mounting nut; the exhaust pipe is provided with an exhaust channel, the upper side and the lower side of the exhaust channel penetrate through the exhaust channel, a circle of convex ring is arranged on the periphery of the middle part of the exhaust pipe, external threads are arranged at the lower end of the exhaust pipe, a mounting hole is formed in the upper side surface of the pressure cover, the lower end of the exhaust pipe penetrates through the mounting hole and then is screwed through threaded connection by using a mounting nut, the mounting nut is provided with an exhaust hole, the lower side of the exhaust hole is communicated with the inside of the pressure cooker, the upper side of the exhaust hole is communicated with the exhaust channel, the convex ring is positioned above the mounting hole, and the diameter of the convex ring is larger than the aperture of the mounting hole; the gravity valve is detachably sleeved on the upper section of the exhaust pipe and can slide up and down, an air leakage hole is formed in the upper part of the gravity valve, and the lower side of the top of the gravity valve is tightly pressed and sealed with the exhaust channel; when the cover rotates to the working position, the gravity valve is jacked up, so that the air leakage hole is communicated with the exhaust channel. The setting of bulge loop can be placed the blast pipe in the mounting hole steadily. The gravity valve slides downwards along the exhaust pipe, and can seal the exhaust passage to realize pressure maintaining; the gravity valve slides upwards along the exhaust pipe, and an exhaust channel can be opened to realize exhaust and pressure relief.

The cover comprises a fixed seat of the cover, a positioning bolt and a knob cover; a central hole is formed in the center of the pressure cover, and the positioning bolt penetrates through the central hole from bottom to top and then is locked on the fixed seat of the cover; the knob cover is sleeved on the periphery of the fixed seat of the cover and can rotate around the fixed seat, and one end of the knob cover is provided with an arc-shaped convex point; when the rotary cover rotates, the arc-shaped convex points jack up the gravity valve to exhaust. The setting of arc salient point, under the rotation of knob lid, with gravity valve jack-up and realize the exhaust pressure release when touching with the gravity valve, behind the gravity valve was kept away from to arc salient point, the gravity valve moved down and the involution exhaust passage realizes the pressurize function.

The pressure cover is provided with a spacer, and the spacer is fixed on the lower side surface of the pressure cover through a bolt, or the spacer is fixed below the positioning bolt; a blocking space is formed between the spacer and the lower side surface of the pressure cover, and the mounting nut is positioned in the blocking space; the spacer is provided with a plurality of filtering holes, and the separation space is communicated with the pressure cooker through the filtering holes. The spacer space can prevent food in the pot from splashing and entering the safety valve to form an isolation area; the arrangement of the filter holes can lead condensed water condensed when meeting the pressure cooker to flow back to the cooker.

The middle part of the spacer is arched upwards, the spacer is provided with a plurality of diversion trenches, and the filter holes are located below the diversion trenches. The arrangement of the diversion trench is beneficial to the backflow of the condensed water.

The lower side of the gravity valve is arched downwards to form a convex part which opens the exhaust channel along with the rising of the gravity valve or seals the exhaust channel along with the falling of the gravity valve. The convex part is arranged to open or close the exhaust passage.

The periphery of the lower end of the exhaust pipe is sleeved with an O-shaped ring, and the O-shaped ring is clamped between the exhaust pipe and the mounting nut. The O-shaped ring is favorable for enhancing the air tightness between the O-shaped ring and the sealing ring and avoiding air leakage.

The pressure lid is seted up along the side window, and the window aims at the sealing washer and is pressed close to for it.

Compared with the prior art, the utility model has the advantages of: this pressure cooker passes through the soon of lid and closes, can one-key formula control pot cover open and shut, reduces loaded down with trivial details operation and maloperation, and through the rotation of control knob lid, can trigger the relief valve, realizes the pressure release function of exhausting or to realizing the pressurize function in the pot. The steel wire annular coil is arranged to fix the sealing ring, so that the sealing ring cannot touch the pot body, and the friction between the sealing ring and the pot edge is reduced, so that the pressure cover is difficult to rotate.

Drawings

Fig. 1 is a side view of an embodiment of the present invention;

fig. 2 is a rear view of an embodiment of the present invention;

fig. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a longitudinal cross-sectional view of the embodiment of the present invention with the septum and handle removed;

fig. 5 is a cross-sectional view of an embodiment of the present invention taken along the longitudinal direction;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

fig. 7 is a longitudinal cross-sectional view of the embodiment of the present invention with the gravity valve removed;

FIG. 8 is a schematic view of the structure of FIG. 7 with the seal rings and steel wire toroids removed;

FIG. 9 is a schematic structural view of a pot body according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a pot cover according to an embodiment of the present invention;

FIG. 11 is a schematic view of the structure of FIG. 10 with the seal ring and steel wire toroid removed;

fig. 12 is a bottom view of an embodiment of the present invention;

fig. 13 is a schematic structural view of another handle and a window according to an embodiment of the present invention.

The reference numerals in the drawings mean: 1. a pot body; 11. a first convex position; 12. a first concave position; 2. a pressure cap; 21. a second convex position; 22. a second concave position; 23. a bump; 24. a seal ring; 25. a steel wire loop coil; 26. a window; 3. a safety valve; 31. a gravity valve; 311. an air release hole; 312. a boss portion; 32. An exhaust pipe; 321. an O-shaped ring; 33. mounting a nut; 4. a cover; 41. a fixing seat of the cover; 42. positioning the bolt; 43. a knob cover; 431. an arc-shaped convex point; 5. a spacer; 51. filtering holes; 52. and a diversion trench.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Examples

Referring to fig. 1 to 13, in the present embodiment, a handle of a cooker can be replaced by various types, some decoration parts can be added to the gravity valve 31, and the gravity valve 31 itself can be modified appropriately. The cooker comprises a cooker body 1 and a cooker cover, wherein the cooker cover is covered above the cooker body 1 and comprises a pressure cover 2, a safety valve 3 for exhausting and a cover 4; a buckling device is arranged between the pressure cover 2 and the pot body 1; rotating the cover 4, rotating the pressure cover 2 and the pot body 1, and triggering the buckling device to buckle the pressure cover 2 and the pot body 1; the safety valve 3 automatically rises to release pressure when the pressure in the cooker reaches a set value; when the pressure in the cooker is overlarge, the rotary cover 4 touches the safety valve 3, and the safety valve 3 realizes stable air exhaust and pressure relief.

The pressure cooker can realize the locking or the loosening of the pressure cover 2 and the cooker body 1 by rotating the cover 4, and can complete the opening and closing operation by one hand; the safety valve 3 can be triggered by controlling the rotation of the cover 4 by a single hand, thereby realizing the functions of air exhaust and pressure relief.

The buckling device comprises a first convex position 11, a first concave position 12, a second convex position 21 and a second concave position 22; the first convex positions 11 are formed by outwards protruding the upper edge of the pot body 1, a plurality of first convex positions 11 are arranged, and first concave positions 12 are formed between every two adjacent first convex positions 11; the second convex positions 21 are formed by downwards forming cover edges for buckling the pot body 1 on the periphery of the pressure cover 2, the lower part of the inner side of each cover edge is inwards protruded and extended, a plurality of second convex positions 21 are arranged, second concave positions 22 are formed between every two adjacent second convex positions 21, and the second convex positions 21 are matched with the first concave positions 12 in shape; when the pot cover covers the pot body 1, the second convex position 21 is aligned with the first concave position 12 and placed down, the first convex position 11 and the second convex position 21 are gradually placed in a staggered mode until the first convex position 11 is located above the second convex position 21 through rotating the pot cover, the pot cover and the pot body 1 are screwed, and the first concave position 12 is opposite to the second concave position 22. The pressure cover 2 and the cooker body 1 can be buckled through the overlapping between the convex positions of the pressure cover 2 and the cooker body 1, and the pressure cover 2 and the cooker body 1 are buckled more tightly due to the increase of pressure during cooking.

The upper side surface of the second convex position 21 is provided with an upward arched lug 23, an arc-shaped groove is formed between the lug 23 and the inner side of the cover edge of the pressure cover 2, and a sealing ring 24 is arranged in the cover edge; the cover edge is also internally provided with a steel wire annular coil 25, the steel wire annular coil 25 is a circular ring formed by a circle of round steel wire surrounding the circumference, and the steel wire annular coil 25 is clamped in the arc-shaped groove and clamped between the sealing ring 24 and the inner wall of the cover edge; when the first protrusion 11 is inserted over the second protrusion 21, the upper side of the first protrusion 11 abuts against the sealing ring 24, and the outer side abuts against the steel wire toroid 25. The arc-shaped groove of the bump 23 can firmly fix the steel wire annular coil 25, and the steel wire annular coil 25 is in contact with the pot edge, so that the problem that the friction force is increased due to the fact that the sealing ring 24 is directly in contact with the pot edge is solved. The setting of sealing washer 24, the gas tightness of multiplicable pan.

The safety valve 3 includes a gravity valve 31, an exhaust pipe 32, and a mounting nut 33; the exhaust pipe 32 is provided with an exhaust passage, the upper side and the lower side of the exhaust passage penetrate through the exhaust passage, a circle of convex ring is arranged on the periphery of the middle part of the exhaust pipe 32, external threads are arranged at the lower end of the exhaust pipe 32, a mounting hole is formed in the upper side surface of the pressure cover 2, the lower end of the exhaust pipe 32 penetrates through the mounting hole and then is screwed through the mounting nut 33 through threaded connection, the mounting nut 33 is provided with an exhaust hole, the lower side of the exhaust hole is communicated with the pressure cooker, the upper side of the exhaust hole is communicated with the exhaust passage, the convex ring is positioned above the mounting hole, and the diameter of the convex ring is larger than the aperture of the mounting hole; the gravity valve 31 is detachably sleeved on the upper section of the exhaust pipe 32 and can slide up and down, the air leakage hole 311 is arranged at the upper part of the gravity valve 31, and the lower side of the top of the gravity valve 31 is pressed tightly and seals the exhaust channel; when the cover 4 is rotated to the working position, the gravity valve 31 is lifted up, so that the air release hole 311 communicates with the exhaust passage. The arrangement of the convex ring can stably place the exhaust pipe 32 in the mounting hole. The gravity valve 31 slides downwards along the exhaust pipe 32, and can seal the exhaust passage to realize pressure maintaining; the gravity valve 31 slides upwards along the exhaust pipe 32, so that an exhaust channel can be opened, and exhaust and pressure relief are realized.

The cover 4 comprises a cover fixing seat 41, a positioning bolt 42 and a knob cover 43; a central hole is formed in the center of the pressure cover 2, and a positioning bolt 42 penetrates through the central hole from bottom to top and then is locked on a fixed seat 41 of the cover; the 43 of the knob cover is sleeved on the periphery of the fixed seat 41 of the cover and can rotate around the fixed seat, and one end of the 43 of the knob cover is provided with an arc-shaped convex point 431; when the rotary cap 4 is rotated, the arc-shaped protrusions 431 lift up the gravity valve 31 to exhaust air. The arrangement of the arc-shaped convex point 431 can jack up the gravity valve 31 to realize air exhaust and pressure relief when the arc-shaped convex point 431 rotates under the rotation of the knob cover 43 and is in contact with the gravity valve 31, and after the arc-shaped convex point 431 is far away from the gravity valve 31, the gravity valve 31 moves downwards to seal an air exhaust channel to realize the pressure maintaining function.

The pressure cover 2 is provided with a spacer 5, the spacer 5 is fixed on the lower side surface of the pressure cover 2 through a bolt, or the spacer 5 is fixed below a positioning bolt 42; a separation space is formed between the spacer 5 and the lower side surface of the pressure cover 2, and the mounting nut 33 is positioned in the separation space; the spacer 5 is provided with a plurality of filter holes 51, and the separation space is communicated with the pressure cooker through the filter holes 51. The space of the spacer 5 can prevent food in the pot from splashing and entering the safety valve 3 to form an isolation area; the arrangement of the filtering holes 51 can lead the condensed water condensed when meeting the pressure cooker to flow back to the cooker.

The middle part of the spacer 5 is arched upwards, the spacer 5 is provided with a plurality of diversion trenches 52, and the filter holes 51 are positioned below the diversion trenches 52. The flow guide grooves 52 are arranged to facilitate the backflow of the condensed water.

The lower side of the gravity valve 31 is arched downward to form a convex portion 312, and the convex portion 312 opens the exhaust passage as the gravity valve 31 is raised, or the convex portion 312 seals the exhaust passage as the gravity valve 31 is lowered. The protrusion 312 is provided to open or close the exhaust passage.

An O-ring 321 is fitted around the outer periphery of the lower end of the exhaust pipe 32, and the O-ring 321 is sandwiched between the exhaust pipe 32 and the mounting nut 33. The arrangement of the O-shaped ring 321 is beneficial to enhancing the air tightness between the two and avoiding air leakage.

The pressure cap 2 is laterally provided with a window 26, and the window 26 is aligned with and adjacent to the sealing ring 24. The window 26 is arranged to allow the sealing ring 24 to deform toward the window 26 when the pressure in the cooker is too high under the condition that all the air valves are out of order, so that the sealing ring 24 is displaced, and the air pressure can be discharged from the window 26 to realize safe pressure relief.

In this embodiment, when the lid is closed and pressurized, the concave-convex position of the pressure lid 2 and the cooker body 1 is aligned, the lid 4 is rotated to separate the arc-shaped protrusion 431 from the safety valve 3, and the knob lid 43 is continuously rotated until the first protrusion 11 overlaps with the second protrusion 21, thereby achieving the closed and pressurized state. When pressure exists in the cooker, the sealing ring 24 enables the cooker body 1 and the pressure cover 2 to be closed and sealed under the physical action of expansion with heat and contraction with cold, and the pressure cover 2 rises upwards, so that the first convex position 11 and the second convex position 21 are overlapped and buckled more firmly. When the pressure in the cooker is too high, the gravity valve 31 is jacked up by rotating the arc-shaped convex point 431, so that air is exhausted. When the pressure in the cooker is equal to the external pressure, the pressure cap 2 is automatically lowered, and the cap 4 is rotated to make the pressure cap 2 generate a click sound, so that the pressure cap 2 is lifted, and the cap opening is completed.

When the pressure in the cooker is reduced to below 5kpa, the pressure cooker can automatically descend, the pressure cooker is driven to rotate by rotating the cover 4, and the pressure cover 2 can be opened after the first convex position 11 and the second convex position 21 are dislocated. When the designed working pressure value (60-100 kpa) of the gravity valve 31 is reached in the pressure cooker, the gas can be discharged from the gravity valve 31; when the safety valve 3 is failed accidentally, the pressure in the cooker reaches the set safety pressure value (200 kpa), the air pressure is discharged from the safety valve 3, and a loud sound is given out; when each air valve in the cooker fails and the air pressure reaches the set pressure value (300 kpa), the sealing ring 24 is displaced towards the window 26 on the side surface of the pressure cover 2 under the action of the air pressure, so that the air pressure in the cooker is quickly discharged from the side of the cooker.

The above detailed description is directed to a specific example of a possible embodiment of the present invention, which is not intended to limit the scope of the invention, but rather, all equivalent implementations or modifications not departing from the scope of the invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a spiral-close type multifunctional pressure cooker, includes pot body (1) and pot lid, the pot lid is put pot body (1) top, its characterized in that: the pot cover comprises a pressure cover (2), a safety valve (3) for exhausting gas and a cover (4); a buckling device is arranged between the pressure cover (2) and the pot body (1); the cover (4) is rotated, the pressure cover (2) and the pot body (1) are rotated, and the buckling device is triggered to buckle the pressure cover (2) and the pot body (1); the safety valve (3) automatically rises to release pressure when the pressure in the cooker reaches a set value; when the pressure in the cooker is overlarge, the cover (4) is rotated to touch the safety valve (3), and the safety valve (3) realizes stable air exhaust and pressure relief.

2. The multi-functional pressure cooker of the rotary union type of claim 1, wherein: the buckling device comprises a first convex position (11), a first concave position (12), a second convex position (21) and a second concave position (22); the first convex positions (11) are formed by the outward bulge of the upper edge of the pot body (1), a plurality of first convex positions (11) are arranged, and the first concave positions (12) are formed between the adjacent first convex positions (11); the second convex positions (21) are formed by downwards forming cover edges for buckling the pot body (1) on the periphery of the pressure cover (2), the cover edges are formed by inwards protruding and extending along the lower part of the inner side, a plurality of second convex positions (21) are arranged, second concave positions (22) are formed between every two adjacent second convex positions (21), and the shapes of the second convex positions (21) are matched with those of the first concave positions (12); when the pot cover is covered on the pot body (1), the second convex position (21) is aligned with the first concave position (12) and is placed down, the pot cover is rotated, the first convex position (11) and the second convex position (21) are gradually placed in a staggered mode until the first convex position (11) is located above the second convex position (21), namely the pot cover is completed, the pot body (1) is screwed, and the first concave position (12) is opposite to the second concave position (22).

3. The multi-functional pressure cooker of the rotary union type of claim 2, wherein: the upper side surface of the second convex position (21) is provided with an upward arched convex block (23), an arc-shaped groove is formed between the convex block (23) and the inner side of the cover edge of the pressure cover (2), and a sealing ring (24) is arranged in the cover edge; a steel wire annular coil (25) is further installed in the cover edge, the steel wire annular coil (25) is a circular ring formed by a circle of round steel wire surrounding the circumference, and the steel wire annular coil (25) is clamped in the arc-shaped groove and clamped between the sealing ring (24) and the inner wall of the cover edge; when the first convex position (11) is embedded above the second convex position (21), the upper side of the first convex position (11) is propped against the sealing ring (24), and the outer side of the first convex position (11) is propped against the steel wire annular coil (25).

4. The rotary multifunctional pressure cooker according to claim 1, wherein: the safety valve (3) comprises a gravity valve (31), an exhaust pipe (32) and a mounting nut (33); the exhaust pipe (32) is provided with an exhaust channel, the upper side and the lower side of the exhaust channel penetrate through the exhaust channel, a circle of convex ring is arranged on the periphery of the middle part of the exhaust pipe (32), external threads are arranged at the lower end of the exhaust pipe (32), a mounting hole is formed in the upper side of the pressure cover (2), the lower end of the exhaust pipe (32) penetrates through the mounting hole and then is screwed through threaded connection by using a mounting nut (33), an exhaust hole is formed in the mounting nut (33), the lower side of the exhaust hole is communicated with the inside of the pressure cooker, the upper side of the exhaust hole is communicated with the exhaust channel, the convex ring is positioned above the mounting hole, and the diameter of the convex ring is larger than the aperture of the mounting hole; the gravity valve (31) is detachably sleeved on the upper section of the exhaust pipe (32) and can slide up and down, an air leakage hole (311) is arranged at the upper part of the gravity valve (31), and the lower side of the top of the gravity valve (31) is compressed and seals the exhaust channel; when the cover (4) rotates to the working position, the gravity valve (31) is jacked up, so that the air release hole (311) is communicated with the exhaust channel.

5. The multi-functional pressure cooker of the rotary union type of claim 4, wherein: the cover (4) comprises a cover fixing seat (41), a positioning bolt (42) and a knob cover (43); a central hole is formed in the center of the pressure cover (2), and the positioning bolt (42) penetrates through the central hole from bottom to top and then is locked on the fixed seat (41) of the cover; the knob cover (43) is sleeved on the periphery of the fixed seat (41) of the cover and can rotate around the fixed seat, and an arc-shaped convex point (431) is arranged at one end of the knob cover (43); when the rotary cover (4) rotates, the arc-shaped convex points (431) jack up the gravity valve (31) to realize air exhaust.

6. The multi-functional pressure cooker of the rotary union type of claim 5, wherein: the pressure cover (2) is provided with a spacer (5), the spacer (5) is fixed on the lower side surface of the pressure cover (2) through a bolt, or the spacer (5) is fixed below the positioning bolt (42); a blocking space is formed between the spacer (5) and the lower side surface of the pressure cover (2), and the mounting nut (33) is positioned in the blocking space; the spacer (5) is provided with a plurality of filtering holes (51), and the separation space is communicated with the inside of the pressure cooker through the filtering holes (51).

7. The multi-functional pressure cooker of the rotary union type of claim 6, wherein: the middle part of the spacer (5) arches upwards, the spacer (5) is provided with a plurality of diversion trenches (52), and the filter holes (51) are positioned below the diversion trenches (52).

8. The multi-functional pressure cooker of the rotary union type of claim 4, wherein: the lower side of the gravity valve (31) is arched downwards to form a bulge (312), and the bulge (312) opens the exhaust channel along with the rising of the gravity valve (31) or the bulge (312) seals the exhaust channel along with the falling of the gravity valve (31).

9. The rotary multi-functional pressure cooker according to claim 4, wherein: the periphery of the lower end of the exhaust pipe (32) is sleeved with an O-shaped ring (321), and the O-shaped ring (321) is clamped between the exhaust pipe (32) and the mounting nut (33).

10. The multi-functional pressure cooker of the rotary union type of claim 3, wherein: the pressure lid (2) is covered and is seted up window (26) along the side, and window (26) aim at sealing washer (24) and for it closes to.