Screwing type pressure cooker

Abstract

The invention discloses a screwing type pressure cooker which comprises a cooker body, a cooker cover and side lugs, and the cooker cover comprises a steel cover, arc-shaped teeth installed on the steel cover, a panel provided with a fixing shaft, a cover handle provided with a positioning table on the bottom face, a rotating block arranged on the lower side of the positioning table and provided with a first rack, a gear, a center nut and a center stud; the central stud sequentially penetrates through the rotating block and the steel cover and then is screwed with the central nut; positioning grooves are formed in the lower side faces of the two ends of the panel respectively, and bosses matched with the positioning grooves are arranged on the upper sides of the side lugs; one end of the gear is meshed with the first rack, and the other end of the gear is meshed with the arc-shaped teeth; inner buckling edges and outer concave positions which are uniformly arranged and alternately distributed are arranged on the lower side of the outer edge of the steel cover, and a plurality of outer buckling edges and inner concave positions which are uniformly arranged and alternately distributed are arranged on a pot opening of the pot body; and the inner buckling edge and the outer buckling edge are staggered or overlapped along with the rotation of the cover handle. According to the pressure cooker, one-key opening and closing are achieved by rotating the cooker cover, and the cooker cover and the cooker body can be accurately buckled in an aligned mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure cookers, in particular to a screw type pressure cooker. BACKGROUND

[0002] The pressure cookers on the market are relatively cumbersome in the opening and closing operation, some of which need to be operated by two hands to complete the opening and closing operation by using the misaligned engagement between the cover and the body, some of which are too complex in structure to make the user difficult to understand the application. Some pressure cookers are prone to be in a half-opened state during use, which causes the cover and the body to be not tightly buckled, the pressure in the pot to be leaked, and safety accidents to be caused. SUMMARY

[0003] The present application aims at overcoming the shortcomings of the prior art and providing a screw type pressure cooker.

[0004] The present application is achieved by the following technical scheme: a screw type pressure cooker comprises a pot body and a pot cover, side ears are installed on both sides of the pot body, the pot cover comprises a steel cover, a panel, a cover handle, a rotating block, a gear, a center nut and a center stud, a first mounting hole is formed in the center of the panel, a fixed shaft is arranged on the lower side of the panel, a positioning table is arranged on the bottom surface of the cover handle, a first positioning hole is formed in the bottom surface of the positioning table, a second mounting hole is formed in the center of the rotating block, a third mounting hole is formed in the center of the steel cover, the center stud is sequentially threaded through the second mounting hole and the third mounting hole and screwed with the center nut, the nut of the center stud is located in the first positioning hole, the rotating block is locked on the positioning table by a connecting screw, and the positioning table is located in the first mounting hole, positioning grooves are respectively formed in the lower side surfaces of both ends of the panel, convex tables matching the positioning grooves are arranged on the upper sides of the side ears, arc-shaped teeth are installed on the upper side surface of the steel cover, the arc-shaped teeth are located in the inner bottom of the panel, the rotating block is provided with a first rack, the gear is sleeved on the fixed shaft, one end of the gear engages with the first rack, and the other end of the gear engages with the arc-shaped teeth, inner buckling edges and outer concave positions which are uniformly arranged and alternately distributed are arranged on the lower side of the outer edge of the steel cover, and the pot opening of the pot body is provided with a plurality of outer buckling edges and inner concave positions which are uniformly arranged and alternately distributed, the inner buckling edges and the outer buckling edges are misaligned or overlapped with each other when the cover handle is rotated.

[0005] The present pressure cooker is rotated by rotating the cover handle, the rotating block is rotated, the gear and the arc-shaped teeth are linked to rotate the steel cover, so that the inner buckling edges of the steel cover and the outer buckling edges of the pot body are misaligned or overlapped, the cover and the body are loosened when misaligned, the cover and the body are buckled and locked when overlapped, and the opening and closing operation of the cover is realized by single hand control. The cooperation of the positioning grooves and the convex tables can realize the accurate buckling of the cover and the body.

[0006] The device comprises a pair of gears, and a pair of arc-shaped teeth corresponding to a fixed shaft. A pair of slots are formed on the outer edges of a pair of sides of the rotating block. A pair of limiting ribs are provided on the lower side of the panel, the limiting ribs engaging with the slots and constraining relative movement between them between the two side walls of the slots. A pair of side wings are formed on the outer edge of the rotating block between the two slots, each side symmetrically provided with a pair of first racks extending in an arc along the outer edge direction. A positioning block is provided on the upper side of the rotating block, and a first positioning groove is formed on the bottom surface of the positioning platform, the positioning block being embedded in the first positioning groove. The gears, arc-shaped teeth, and first racks are all provided in pairs, ensuring tight linkage and even force distribution. The cooperation of the slots and limiting ribs constrains the rotation range of the lid handle and the steel lid, preventing them from deviating from their rotation trajectory.

[0007] It also includes a tactile post and a tension spring. The positioning platform has a second positioning groove, and the side wall of the first mounting hole has a second rack extending along the circumference of the hole. The tension spring and the tactile post are placed in the second positioning groove. The inner end of the tension spring abuts against the groove wall of the second positioning groove, and its outer end abuts against the inner end of the tactile post. The outer end of the tactile post abuts against the second rack and can slide along it. The cooperation between the tactile post and the second rack allows the rotation of the lid handle to have a tactile feedback, making the rotation clearly perceptible.

[0008] It also includes a gravity valve assembly, which comprises a gravity valve core, a gravity valve seat, a gravity valve body, a gravity valve top block, a valve nut, a spring clip holder, a retaining ring, and an anti-clogging cover; the gravity valve core has a first exhaust channel inside, which extends through its upper and lower sides; the middle section of the gravity valve core has a first raised ring around its outer periphery, and its lower section has a threaded section around its outer periphery; the gravity valve seat has a first cavity opening downwards, and the first cavity is recessed outwards to form a first annular groove; the top of the gravity valve seat has a first through hole, which connects the first cavity to the outside; the gravity valve body has a second through hole and a second cavity opening downwards, the second through hole connecting the second cavity to the outside; the lower end of the gravity valve top block has a guide post; the spring clip holder contains... The valve core has a third through hole; the steel cover has a fourth mounting hole; the lower section of the gravity valve core passes through the fourth mounting hole and the third through hole in sequence and is tightened with the valve nut; the anti-clogging cover is fitted around the outer periphery of the spring clip holder and is locked in place by the outer periphery of the spring clip holder; the anti-clogging cover has several exhaust grooves; the bottom of the valve nut has a first exhaust hole that connects its interior to the outside; the retaining spring is locked in the first annular groove; the gravity valve body is fitted around the outer periphery of the gravity valve seat; the guide post passes through the second through hole; the first cavity is fitted around the outer periphery of the upper section of the gravity valve core; the lower end of the guide post passes through the first through hole and blocks the outlet of the first exhaust channel; after the gravity valve body is lifted, the lower end of the guide post releases the outlet of the first exhaust channel. When the gravity valve seat is lifted, the guide post of the gravity valve top block opens the outlet of the first exhaust channel, thereby achieving the function of venting and depressurizing. When the gravity valve seat is fitted onto the gravity valve core, it achieves the function of sealing and maintaining pressure. The snap ring design requires a certain force to separate the gravity valve seat from the gravity valve core, preventing it from easily falling off when the pot is turned over.

[0009] The gravity valve assembly further includes a first sealing ring and a second sealing ring; the first sealing ring is sleeved on the outer periphery of the guide post and clamped between the top of the gravity valve body and the lower side of the gravity valve top block; a second annular groove is formed on the lower side of the first protruding ring, the second sealing ring is embedded in the second annular groove, and the lower side of the second sealing ring abuts against the upper side of the steel cover; the diameter of the first protruding ring is larger than the diameter of the fourth mounting hole; a second protruding ring is formed by a protrusion on the outer periphery of the upper section of the gravity valve core, and when the gravity valve body is sleeved on the outer periphery of the gravity valve core, the retaining ring is located above the second protruding ring.

[0010] The spring clip holder has three equally spaced support legs, which are folding buckles. The inner side of the anti-clogging cover has a third protruding ring protruding inward. When the anti-clogging cover is fitted onto the outer periphery of the spring clip holder, the buckles of the support legs lock the lower side of the third protruding ring. Several exhaust grooves are arranged vertically and parallel to each other on the outer periphery of the anti-clogging cover, and several ventilation holes are opened on the lower side of the anti-clogging cover.

[0011] It also includes a pressure relief safety valve assembly, which includes a pressure relief safety valve seat, a pressure relief safety valve stem, and a pressure relief safety valve cap. The lower outer periphery of the pressure relief safety valve seat is recessed inward to form a third annular groove. A second exhaust channel is provided inside the pressure relief safety valve seat, penetrating its upper and lower sides. The outlet of the second exhaust channel has a conical opening structure, with the diameter gradually increasing from bottom to top. The lower section of the pressure relief safety valve stem protrudes outward to form a conical convex ring, with the diameter gradually increasing from bottom to top. A fourth protruding ring is provided on the outer periphery of the lower section of the pressure relief safety valve stem. The inlet section of the second exhaust channel... The inner wall near the conical opening structure is recessed outward to form a fourth annular groove; the top outer circumference of the pressure relief valve stem is recessed inward to form a fifth annular groove; the lower part of the pressure relief valve cap is bent inward to form an annular fold, which is fastened within the fifth annular groove; the pressure relief valve seat is inserted into the second exhaust channel, and the fourth protruding ring is inserted into the fourth annular groove; the steel cover has a sixth mounting hole, the pressure relief valve seat is inserted into the sixth mounting hole, and the third annular groove is fastened around the periphery of the sixth mounting hole; the pressure relief valve seat is made of silicone material.

[0012] It also includes a safety valve assembly, which comprises a safety valve tube, a safety valve lower part, a safety valve core, a silicone gasket, a third sealing ring, and a conical spring; the lower end of the safety valve tube is threadedly connected to the upper end of the safety valve lower part, with a cavity between them; the top of the safety valve tube has a second vent hole communicating with the cavity, and its lower part has a raised annular cap; the lower outer circumference of the safety valve lower part has a sixth annular groove, and the silicone gasket is fitted into the sixth annular groove; the bottom of the safety valve lower part has a third vent hole communicating with the cavity; the upper outer circumference of the safety valve core protrudes outward to form a fifth raised ring, the diameter of which is larger than the diameter of the third vent hole; the safety valve... The lower section of the valve core passes through the third vent hole. The third sealing ring is fitted around the lower section of the safety valve core and is tightly against the lower side of the fifth protruding ring. The lower end of the conical spring is fitted around the upper section of the safety valve core and is tightly against the upper side of the fifth protruding ring. The upper end of the conical spring abuts against the inner wall of the safety valve tube cavity. The steel cover has a fifth mounting hole, and the safety valve assembly is fitted into the fifth mounting hole. The diameter of the annular cap and the diameter of the silicone gasket are both larger than the diameter of the fifth mounting hole. The panel has a fourth through hole. The safety valve tube passes through the fourth through hole and communicates with the outside as the steel cover rotates, or the safety valve tube moves inside the lower side of the panel as the steel cover rotates. The cooperation between the fifth protruding ring and the third sealing ring can seal the third vent hole to create a pressurized environment, or open the third vent hole to release pressure inside the pot. The diameter setting of the annular cap brim silicone gasket can prevent the safety valve assembly from falling off, forming the lifting and lowering range of the safety valve assembly.

[0013] The system also includes a sliding auxiliary component, which comprises a steel ball body, a steel ball sleeve, and a mounting cylinder. The steel ball sleeve is an upward-opening cylindrical structure with a fifth through hole at its bottom and a long, narrow notch running through its side wall. The diameter of the fifth through hole is smaller than the diameter of the steel ball body. The mounting cylinder is located on the lower side of the panel and contains a retaining strip. The steel ball body is inserted into the steel ball sleeve, which is fitted onto the mounting cylinder from bottom to top. The retaining strip engages with the long, narrow notch, and the lower side of the steel ball body rests against the steel lid. Two sets of the sliding auxiliary component are provided, located at opposite ends of the panel's length. The sliding auxiliary component allows for smoother sliding between the panel and the lid. The engagement of the long, narrow notch and the retaining strip provides mounting constraint between the steel ball sleeve and the mounting cylinder, preventing detachment.

[0014] The side ear includes an ear base, a side ear body, and a protective ring; the ear base is installed on the pot body, and a receiving groove is opened on the lower inner side of the side ear body. The side ear body is locked onto the ear base by fastening screws, and the ear base is embedded in the receiving groove; a buckle groove is opened on both sides of the lower part of the side ear body, and a buckle hook is provided on both sides of the protective ring. The protective ring is locked together with the side ear body by the buckle hooks being embedded in the buckle grooves.

[0015] Compared with existing technologies, the advantages of this invention are as follows: This pressure cooker achieves one-button opening and closing by rotating the lid, eliminating the cumbersome operation of traditional pressure cookers where the lid needs to be turned with both hands; operation is more convenient; the positioning groove and the boss cooperate to achieve precise alignment and locking of the lid and the pot body; through the linkage of the safety valve, the lid, and the panel, the pressure cooker can only pressurize normally when properly locked, and the pressure inside the pot drops to a safe range, and the safety valve drops to open the pressure cooker, realizing the pressure cooker's safety self-locking function and improving safety. Attached Figure Description

[0016] Figure 1 This is a structural exploded view of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the panel, cover handle, rotating block and safety valve assembly in an embodiment of the present invention;

[0018] Figure 3 This is a bottom view of the panel, cover handle, rotating block and safety valve assembly in an embodiment of the present invention;

[0019] Figure 4 for Figure 3 Sectional view along line AA;

[0020] Figure 5 for Figure 3 Sectional view along the BB direction;

[0021] Figure 6 This is a schematic diagram of the panel structure according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the panel structure from another direction according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the lid handle in an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of the rotating block and gear in an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the steel cover structure according to an embodiment of the present invention;

[0026] Figure 11This is a schematic diagram of the steel cover from another direction according to an embodiment of the present invention;

[0027] Figure 12 This is an exploded view of the gravity valve assembly according to an embodiment of the present invention;

[0028] Figure 13 This is an exploded view of the gravity valve assembly from another direction according to an embodiment of the present invention;

[0029] Figure 14 This is an exploded view of the safety valve assembly according to an embodiment of the present invention;

[0030] Figure 15 This is an exploded view of the safety valve assembly from another direction according to an embodiment of the present invention;

[0031] Figure 16 This is a longitudinal sectional view of the safety valve assembly according to an embodiment of the present invention;

[0032] Figure 17 This is a longitudinal section view of the pressure relief safety valve assembly according to an embodiment of the present invention;

[0033] Figure 18 This is a top view of the embodiment of the present invention when the lid is closed;

[0034] Figure 19 for Figure 18 C-axis sectional view;

[0035] Figure 20 for Figure 18 Sectional view along the DD direction;

[0036] Figure 21 for Figure 20 A magnified view of a section at point F in the middle;

[0037] Figure 22 for Figure 18 EE-directed sectional view;

[0038] Figure 23 This is a top view of the present invention with the lid closed, after removing the panel, lid handle, pot body and side ears.

[0039] Figure 24 for Figure 23 Central GG-direction sectional view;

[0040] Figure 25 for Figure 23 Sectional view along the HH direction;

[0041] Figure 26 for Figure 23 Sectional view in direction II;

[0042] Figure 27 forFigure 23 A three-dimensional image;

[0043] Figure 28 This is a top view of an embodiment of the present invention in the open state;

[0044] Figure 29 This is a top view of the present invention with the panel, lid handle, pot body and side ears removed when the lid is in the open state.

[0045] Figure 30 This is a longitudinal sectional view of the safety valve assembly in the closed state of an embodiment of the present invention when it is raised.

[0046] The meanings of the reference numerals in the diagram are as follows: 1. Pot body; 01. Outer edge; 02. Inner recess; 2. Steel lid; 21. Third mounting hole; 22. Arc-shaped tooth; 23. Inner edge; 24. Outer recess; 25. Fourth mounting hole; 26. Sixth mounting hole; 27. Fifth mounting hole; 28. Fixing steel plate; 29. ​​Pot mouth sealing ring; 3. Panel; 31. First mounting hole; 32. Fixing shaft; 33. Positioning groove; 34. Limiting rib; 35. Second rack; 36. Fourth through hole; 4. Lid handle; 41. Positioning platform; 42. First positioning hole; 43. First positioning groove; 44. Second positioning groove. 45. Positioning groove; 46. Hand-feeling post; 5. Tensioning spring; 5. Rotating block; 51. Second mounting hole; 52. Connecting screw; 53. First rack; 54. Slot; 55. Side wing; 56. Positioning block; 61. Gear; 62. Center nut; 63. Center stud; 71. Side ear body; 711. Boss; 712. Receiving groove; 713. Snap groove; 72. Ear seat; 73. Protective ring; 731. Snap hook; 81. Gravity valve core; 811. First exhaust channel; 812. First raised ring; 82. Gravity valve seat; 821. First cavity; 822. First annular groove; 823. First through hole; 83. Gravity valve body; 831. Second through hole; 832. Second cavity; 84. Gravity valve top block; 841. Guide post; 85. Valve nut; 851. First exhaust port; 86. Spring clip holder; 87. Snap ring; 88. Anti-clogging cover; 881. Exhaust groove; 882. Vent hole; 89. First sealing ring; 810. Second sealing ring; 91. Pressure relief safety valve seat; 911. Third annular groove; 912. Second exhaust channel; 913. Fourth annular groove; 92. Pressure relief safety valve stem; 921. Conical convex ring; 922. Fourth protrusion. 923, Fifth annular groove; 93, Pressure relief safety valve cap; 931, Annular folded edge; 101, Safety valve tube; 1011, Second vent hole; 1012, Annular cap brim; 102, Lower part of safety valve; 1021, Sixth annular groove; 1022, Third vent hole; 103, Safety valve core; 1031, Fifth raised ring; 104, Silicone gasket; 105, Third sealing ring; 106, Conical spring; 131, Steel ball body; 132, Steel ball sleeve; 1321, Long strip notched groove; 1322, Fifth through hole; 133, Mounting cylinder; 1331, Locking strip. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0048] Example

[0049] See Figures 1 to 30This is a screw-on pressure cooker, comprising a pot body 1 and a lid. The pot body 1 has side lugs on both sides. The lid includes a steel cover 2, a panel 3, a lid handle 4, a rotating block 5, a gear 61, a central nut 62, and a central stud 63. The panel 3 has a first mounting hole 31 in the center and a fixing shaft 32 on its lower side. The lid handle 4 has a positioning platform 41 on its bottom surface, with a first positioning hole 42 on its bottom surface. The rotating block 5 has a second mounting hole 51 in the center, and the steel cover 2 has a third mounting hole 21 in the center. The central stud 63 passes through the second mounting hole 51 and the third mounting hole 21 in sequence and is then tightened with the central nut 62. The nut of the central stud 63 is located inside the first positioning hole 42. The rotating block 5 is locked by a connecting screw 52. The plate 3 is tightly mounted on the positioning platform 41, which is located inside the first mounting hole 31. The lower sides of both ends of the panel 3 are respectively provided with positioning grooves 33, and the upper side of the side ear is provided with a protrusion 711 that matches the positioning grooves 33. The upper side of the steel cover 2 is equipped with an arc-shaped tooth 22, which is located at the inner bottom of the panel 3. The rotating block 5 is provided with a first rack 53, and a gear 61 is sleeved on the fixed shaft 32. One end of the gear 61 meshes with the first rack 53, and the other end meshes with the arc-shaped tooth 22. The lower side of the outer edge of the steel cover 2 is provided with evenly arranged and alternately distributed inner buckling edges 23 and outer recesses 24. The pot body 1 pot opening is provided with several evenly arranged and alternately distributed outer buckling edges 01 and inner recesses 02. The inner buckling edges 23 and outer buckling edges 01 are misaligned or overlapped as the lid handle 4 rotates. In this embodiment, the arc-shaped teeth 22 are fixed to the steel cover 2 by the fixing steel sheet 28. The inner buckle 23 matches the shape of the outer recess 24, and the outer buckle 01 matches the shape of the inner recess 02. When it is necessary to lift the pot lid, the inner buckle 23 and the outer buckle 01 are offset. At this time, the inner buckle 23 is aligned with the inner recess 02, and the outer buckle 01 is aligned with the outer recess 24. When the pot lid is lifted, the inner buckle 23 can pass through the inner recess 02 to separate the pot lid from the pot body 1.

[0050] This pressure cooker uses a rotating lid handle 4 to rotate a rotating block 5. The meshing gear 61 and the arc-shaped gear 22 work together to rotate the steel lid 2, causing the inner edge 23 of the lid 2 to misalign or overlap with the outer edge 01 of the pot body 1. Misalignment allows the lid to loosen from the pot body 1, while overlap allows it to lock securely in place, enabling one-handed operation for opening and closing the lid. The positioning groove 33 and the boss 711 work together to ensure precise alignment and engagement of the lid and pot body 1.

[0051] A pair of gears 61 are provided, and a pair of arc-shaped teeth 22 are provided corresponding to the fixed shaft 32. A pair of slots 54 are provided on the outer edges of a pair of rotating blocks 5. A pair of limiting ribs 34 are provided on the lower side of the panel 3. The limiting ribs 34 are inserted into the slots 54 and constrain the relative movement between the two between the two side walls of the slots 54. A pair of side wings 55 are formed on the outer edge of the rotating block 5 between the two slots 54. A pair of first racks 53 extending in an arc shape along the outer edge direction are symmetrically provided on each side wing 55. A positioning block 56 is provided on the upper side of the rotating block 5. A first positioning groove 43 is provided on the bottom surface of the positioning platform 41. The positioning block 56 is embedded in the first positioning groove 43. A pair of gears 61, arc-shaped teeth 22, and first racks 53 are provided to ensure close linkage and uniform force distribution among the three. The cooperation between the slots 54 and the limiting ribs 34 constrains the rotation range of the cover handle 4 and the steel cover 2, preventing them from deviating from the rotation trajectory.

[0052] It also includes a tactile post 45 and a tension spring 46. The positioning platform 41 is provided with a second positioning groove 44, and the side wall of the first mounting hole 31 is provided with a second rack 35 extending along the circumference of the hole. The tension spring 46 and the tactile post 45 are placed in the second positioning groove 44. The inner end of the tension spring 46 abuts against the groove wall of the second positioning groove 44, and its outer end abuts against the inner end of the tactile post 45. The outer end of the tactile post 45 abuts against the second rack 35 and can slide along it. The cooperation between the tactile post 45 and the second rack 35 makes the rotation of the cover handle 4 have a tactile feedback, and the rotation can be clearly felt.

[0053] It also includes a gravity valve assembly, which comprises a gravity valve core 81, a gravity valve seat 82, a gravity valve body 83, a gravity valve top block 84, a valve nut 85, a spring clip seat 86, a retaining ring 87, and an anti-clogging cover 88; the gravity valve core 81 has a first exhaust channel 811 inside, which extends through its upper and lower sides; the middle section of the gravity valve core 81 has a first raised ring 812 around its outer periphery, and its lower section has a threaded section around its outer periphery; The gravity valve seat 82 has a downward-opening first cavity 821, which is recessed outward to form a first annular groove 822. A first through hole 823 is provided at the top of the gravity valve seat 82, connecting the first cavity 821 to the outside. The gravity valve body 83 has a second through hole 831 and a downward-opening second cavity 832, which connects the second cavity 832 to the outside. The lower end of the gravity valve top block 84 is provided with... There is a guide post 841; a third through hole is opened in the middle of the spring clip holder 86; a fourth mounting hole 25 is opened in the steel cover 2; the lower section of the gravity valve core 81 passes through the fourth mounting hole 25 and the third through hole in sequence and is tightened with the air valve nut 85; the anti-blocking cover 88 is sleeved on the outer periphery of the spring clip holder 86 and is locked in place by the outer periphery of the spring clip holder 86; the anti-blocking cover 88 has several exhaust grooves 881; the bottom of the air valve nut 85 has a first exhaust hole 85 that connects its interior to the exterior. 1. A retaining ring 87 is engaged within the first annular groove 822. The gravity valve body 83 is fitted around the gravity valve seat 82. A guide post 841 passes through the second through hole 831. The first cavity 821 is fitted around the upper section of the gravity valve core 81. The lower end of the guide post 841 passes through the first through hole 823 and blocks the outlet of the first exhaust channel 811. When the gravity valve body 83 is lifted, the lower end of the guide post 841 releases the outlet of the first exhaust channel 811. When the gravity valve seat 82 is lifted, the guide post 841 of the gravity valve top block 84 can release the outlet of the first exhaust channel 811, thereby achieving the function of venting and depressurizing. When the gravity valve seat 82 is fitted around the gravity valve core 81, it can achieve the function of sealing and maintaining pressure. The retaining ring 87 ensures that a certain force is required between the gravity valve seat 82 and the gravity valve core 81 to separate them, preventing them from easily falling off when the pot is turned over.

[0054] The gravity valve assembly also includes a first sealing ring 89 and a second sealing ring 810; the first sealing ring 89 is sleeved on the outer periphery of the guide post 841 and clamped between the top of the gravity valve body 83 and the lower side of the gravity valve top block 84; a second annular groove is opened on the lower side of the first protruding ring 812, and the second sealing ring 810 is embedded in the second annular groove, with the lower side of the second sealing ring 810 abutting against the upper side of the steel cover 2; the diameter of the first protruding ring 812 is larger than the diameter of the fourth mounting hole 25; a second protruding ring is formed by a protrusion on the outer periphery of the upper section of the gravity valve core 81, and when the gravity valve body 83 is sleeved on the outer periphery of the gravity valve core 81, the retaining ring 87 is located above the second protruding ring.

[0055] The spring clip holder 86 has three equally spaced support legs, which are folding buckles. The inner side of the anti-blocking cover 88 has a third protruding ring protruding inward. When the anti-blocking cover 88 is fitted onto the outer periphery of the spring clip holder 86, the buckles of the support legs lock the lower side of the third protruding ring. Several exhaust grooves 881 are arranged vertically and parallel to each other on the outer periphery of the anti-blocking cover 88, and several ventilation holes 882 are opened on the lower side of the anti-blocking cover 88.

[0056] It also includes a pressure relief safety valve assembly, which includes a pressure relief safety valve seat 91, a pressure relief safety valve stem 92, and a pressure relief safety valve cap 93. The lower outer periphery of the pressure relief safety valve seat 91 is recessed inward to form a third annular groove 911. A second exhaust channel 912 is provided inside the pressure relief safety valve seat 91, penetrating its upper and lower sides. The outlet of the second exhaust channel 912 has a conical opening structure, with the diameter gradually increasing from bottom to top. The lower section of the pressure relief safety valve stem 92 protrudes outward to form a conical convex ring 921, with the diameter of the conical convex ring 921 gradually increasing from bottom to top. A fourth protruding ring 922 is provided on the outer periphery of the lower section of the pressure relief safety valve stem 92. The second exhaust channel 912... The inner wall of the inlet section near the conical opening is recessed outward to form a fourth annular groove 913; the top outer periphery of the pressure relief valve stem 92 is recessed inward to form a fifth annular groove 923; the lower part of the pressure relief valve cap 93 is bent inward to form an annular fold 931, which is fastened in the fifth annular groove 923; the pressure relief valve seat 91 passes through the second exhaust channel 912, and the fourth protruding ring 922 is engaged in the fourth annular groove 913; the steel cover 2 has a sixth mounting hole 26, the pressure relief valve seat 91 passes through the sixth mounting hole 26, and the third annular groove 911 is engaged on the periphery of the sixth mounting hole 26; the pressure relief valve seat 91 is made of silicone material.

[0057] It also includes a safety valve assembly, which includes a safety valve tube 101, a safety valve lower part 102, a safety valve core 103, a silicone gasket 104, a third sealing ring 105, and a conical spring 106. The lower end of the safety valve tube 101 is threadedly connected to the upper end of the safety valve lower part 102, with a cavity between them. The top of the safety valve tube 101 has a second vent hole 1011 communicating with the cavity, and its lower part has a raised annular cap 1012. The lower outer periphery of the safety valve lower part 102 has a sixth annular groove 1021, and the silicone gasket 104 is fitted inside the sixth annular groove 1021. The bottom of the safety valve lower part 102 has a third vent hole 1022 communicating with the cavity. The upper outer periphery of the safety valve core 103 protrudes outward to form a fifth raised ring 1031, and the diameter of the fifth raised ring 1031 is larger than that of the first ring. The diameter of the three exhaust holes 1022; the lower section of the safety valve core 103 passes through the third exhaust hole 1022, and the third sealing ring 105 is fitted on the outer periphery of the lower section of the safety valve core 103 and closely abuts the lower side of the fifth protruding ring 1031; the lower end of the conical spring 106 is fitted on the outer periphery of the upper section of the safety valve core 103 and closely abuts the upper side of the fifth protruding ring 1031, and the upper end of the conical spring 106 abuts against the inner wall of the cavity of the safety valve tube 101; the steel cover 2 has a fifth mounting hole 27, and the safety valve assembly is fitted in the fifth mounting hole 27. The diameter of the annular cap 1012 and the diameter of the silicone gasket 104 are both larger than the diameter of the fifth mounting hole 27; the panel 3 has a fourth through hole 36, and the safety valve tube 101 passes through the fourth through hole 36 and communicates with the outside as the steel cover 2 rotates, or the safety valve tube 101 moves inside the lower side of the panel 3 as the steel cover 2 rotates. The fifth protruding ring 1031 and the third sealing ring 105 cooperate to seal the third vent 1022, creating a pressurized environment, or to open the third vent 1022 to release air and pressure inside the pot. The diameter of the silicone gasket 104 on the annular cap 1012 is designed to prevent the safety valve assembly from falling off, forming the lifting and lowering range of the safety valve assembly.

[0058] It also includes a sliding auxiliary component, which includes a steel ball body 131, a steel ball sleeve 132, and a mounting cylinder 133. The steel ball sleeve 132 is an upward-opening cylindrical structure with a fifth through hole 1322 at its bottom and a long notch 1321 on its side wall, which penetrates the top surface of the steel ball sleeve 132. The diameter of the fifth through hole 1322 is smaller than the diameter of the steel ball body 131, which can prevent the steel ball body 131 from falling off. The mounting cylinder 133 is located on the lower side of the panel 3. A retaining strip 1331 is provided inside the mounting cylinder 133. The steel ball body 131 is placed inside the steel ball sleeve 132, and the steel ball sleeve 132 is fitted inside the mounting cylinder 133 from bottom to top. The retaining strip 1331 is engaged in the long notch 1321, and the lower side of the steel ball body 131 abuts against the steel cover 2. There are two sets of sliding auxiliary components, located at both ends of the length direction of the panel 3. The sliding auxiliary component allows for smoother sliding between the panel 3 and the pot lid. The engagement of the elongated notch 1321 and the retaining strip 1331 provides installation constraint between the steel ball sleeve 132 and the mounting cylinder 133, preventing them from falling off.

[0059] The side ear includes an ear base 72, a side ear body 71, and a protective ring 73. The ear base 72 is installed on the pot body 1. The lower inner side of the side ear body 71 has a receiving groove 712. The side ear body 71 is locked onto the ear base 72 by fastening screws, and the ear base 72 is embedded in the receiving groove 712. The lower two sides of the side ear body 71 are respectively provided with buckle grooves 713. The two sides of the protective ring 73 are respectively provided with buckle hooks 731. The protective ring 73 is locked together with the side ear body 71 by the buckle hooks 731 being embedded in the buckle grooves 713.

[0060] Installation in this embodiment

[0061] I. Assembly of Panel 3 Components

[0062] 1) Place the tension spring 46 in the second positioning groove 44 set below the cover handle 4, and then place the hand-feeling column 45 in the second positioning groove 44 and press the tension spring 46.

[0063] 2) Insert the cover handle 4 with the tactile post 45 installed into the center hole (first mounting hole 31) of the panel 3 from top to bottom in the set direction, so that the head of the tactile post 45 can make correct contact with the second toothed rack 35 set on the side of the center hole of the panel 3.

[0064] 3) Place the two gears 61 at the positions set below the panel 3, and thread them from bottom to top onto the fixed shaft 32 set below the panel 3;

[0065] 4) Insert the center stud 63 from top to bottom into the center hole (second mounting hole 51) set on the rotating block 5;

[0066] 5) Insert the rotating block 5 from bottom to top into the position set below the lid handle 4, and make the positioning block 56 set above the rotating block 5 insert into the first positioning groove 43 set below the lid handle 4. Use the limiting rib 34 set below the panel 3 for positioning (the limiting rib 34 is inserted into the slot 54). At the same time, make the side wing 55 set on the side of the rotating block 5 press against the two gears 61 on the panel 3 and mesh correctly with the gears 61. Then use three connecting screws 52 to pass through the set screw holes to tighten the rotating block 5 and the lid handle 4 together.

[0067] 6) Place the steel ball body 131 into the steel ball sleeve 132 from top to bottom;

[0068] Place the two ball sleeves 132, each containing a ball body 131, under the mounting cylinder 133 below the panel 3. Position the ball sleeves 132 according to the elongated notch 1321. Insert the ball sleeves 132 from bottom to top onto the mounting cylinder 133. The panel 3 assembly is now complete.

[0069] II. Assembly of Steel Cover 2

[0070] 7) Place the two fixing steel plates 28 on the surface of the steel cover 2 according to the set positions, and then weld the fixing steel plates 28 to the steel cover 2 by welding.

[0071] 8) Place the two arc teeth on top of the fixed steel plate 28 according to the set position, and then weld the arc teeth to the fixed steel plate 28;

[0072] 9) Insert the pot opening sealing ring 29 from bottom to top into the designated position below the steel cover 2 to complete the assembly of the steel cover 2 assembly; (In this embodiment, the pot opening sealing ring 29 is fitted inside the retaining ring around the perimeter of the steel cover 2 and is located above the inner buckle edge 23)

[0073] III. Assembly of Safety Valve Assembly

[0074] 10) Insert the third sealing ring 105 from bottom to top into the position set on the safety valve core 103;

[0075] 11) Place the safety valve core 103 above the lower part of the safety valve 102, and insert the safety valve core 103 into the set position of the lower part of the safety valve 102 from top to top;

[0076] 12) Place the conical spring 106 above the safety valve core 103, and insert the conical spring 106 into the set position of the safety valve core 103 with the smaller side facing down;

[0077] 13) Place the safety valve tube 101 above the safety valve lower part 102, tighten the safety valve tube 101 to the safety valve lower part 102 from top to bottom through the set thread, and press the conical spring 106.

[0078] 14) Place the silicone gasket 104 below the lower part of the safety valve 102, and thread the silicone gasket 104 through the fifth annular groove 923 set in the lower part of the safety valve 102 from bottom to top and tighten it.

[0079] IV. Assembly of the pressure relief safety valve assembly

[0080] 15) Place the pressure relief safety valve stem 92 above the pressure relief safety valve seat 91, and insert the pressure relief safety valve stem 92 into the set position of the pressure relief safety valve seat 91 from top to bottom;

[0081] 16) Place the pressure relief safety valve cap 93 above the pressure relief safety valve stem 92, and put the pressure relief safety valve cap 93 on the set position of the pressure relief safety valve stem 92 from top to bottom;

[0082] V. Assembly of Gravity Valve Assembly

[0083] 17) Place the snap ring 87 below the gravity valve seat 82 and snap the snap ring 87 into the set position inside the gravity valve seat 82 from bottom to top;

[0084] 18) Place the gravity valve body 83 above the gravity valve seat 82, and put the gravity valve body 83 onto the gravity valve seat 82 from top to bottom;

[0085] 19) Place the first sealing ring 89 below the gravity valve top block 84, and thread the first sealing ring 89 through the gravity valve top block 84 at the set position from bottom to top;

[0086] 20) Place the gravity valve top block 84 above the gravity valve body, and tighten the gravity valve body through the gravity valve body 83 and the gravity valve seat 82 from top to bottom using the set threads to complete the assembly of the upper part of the gravity valve assembly.

[0087] 21) Place the second sealing ring 810 below the gravity valve core 81, and thread the second sealing ring 810 through the gravity valve core 81 at the set position from bottom to top;

[0088] 22) Place the gravity valve core 81 above the fourth mounting hole 25 set in the steel cover 2, and thread the valve tube through the steel cover 2 from top to bottom;

[0089] 23) Place the spring clip holder 86 below the gravity valve core 81, and insert the spring clip holder 86 into the valve tube at the set position from bottom to top. Then, use the air valve nut 85 to lock it in the air valve tube at the set position from bottom to top to fix the spring clip holder 86 and the gravity valve core 81 in the set position of the steel cover 2.

[0090] 24) Place the anti-blocking cover 88 under the spring clip holder 86, and cover the spring clip holder 86 from bottom to top with the anti-blocking cover 88, so that the spring clip holder 86 locks the anti-blocking cover 88 in the set position;

[0091] VI. Assembly of the pot lid

[0092] 25) Place the assembled safety valve assembly above the fifth mounting hole 27 set in the steel cover 2, remove the silicone gasket 104 installed on the safety valve assembly, and then insert the safety valve assembly from top to bottom into the fifth mounting hole 27 set in the steel cover 2. Then, from below the pot cover, put the removed silicone gasket 104 back into its original position from bottom to top, so that the safety valve assembly is correctly installed on the steel cover 2 and can move up and down within a certain range.

[0093] 26) Place the pressure relief safety valve assembly on the sixth mounting hole 26 set in the steel cover 2, and insert the pressure relief safety valve assembly into the position set in the steel cover 2 from top to bottom, so that the pressure relief safety valve seat 91 in the pressure relief safety valve assembly is locked in the sixth mounting hole 26.

[0094] 27) Place panel 3 on top of steel cover 2, rotate panel 3 to the correct position, and insert panel 3 onto steel cover 2 from top to bottom, so that the central stud 63 in panel 3 is inserted into the third mounting hole 21 in the center of steel cover 2, and at the same time, the gear 61 in panel 3 is correctly engaged with the arc tooth in steel cover 2. Then place the central nut 62 under steel cover 2 and tighten the central nut 62 and central stud 63 from bottom to top, thereby locking panel 3 and steel cover 2 together; complete the overall assembly of the pot lid.

[0095] 28) Working principle of pressure relief valve: When the pressure inside the pot reaches the set value (2 to 3.5 times the working pressure, but not higher than 350 kPa), the pressure relief safety valve stem will automatically rise and separate from the pressure relief valve seat to achieve rapid pressure relief.

[0096] VII. Assembly of Pot Body Component 1

[0097] 29) Place the two ear seats 72 at the designated positions on the left and right sides of the pot body 1, and then spot weld the ear seats 72 to the pot body 1;

[0098] 30) Place the protective ring 73 on the front end of the head of the side ear body 71, and thread the protective ring 73 onto the side ear body 71 from front to back;

[0099] 31) Place the side ear body 71 on the left and right sides of the two ear seats 72, then put the side ear body 71 on the two ear seats 72, and make the screw holes set on the side ear body 71 concentric with the screw holes set on the ear seats 72. Then use fastening screws to lock the side ear body 71 on the ear seats 72 to complete the assembly of the pot body 1 component.

[0100] 8. Overall Assembly

[0101] 32) Place the assembled lid on top of the pot body 1 assembly, and cover the pot body 1 from top to bottom, ensuring that the positioning grooves 33 at both ends of the panel 3 fit onto the protrusions 711 on the upper end of the side ear body 71. Then, rotate the lid handle 4 clockwise, which drives the steel lid 2 to rotate counterclockwise via the gear 61, so that the inner snap-fit ​​edge 23 of the steel lid 2 can fasten the outer snap-fit ​​edge 01 on the outer side of the pot body 1. This completes the overall assembly of the pressure cooker.

[0102] The working principle of this embodiment (opening and closing lid and safety self-locking principle)

[0103] 1) Open lid state

[0104] In this state, the safety valve assembly is not concentric with the fourth through hole 36 set on the panel 3. When the pot is heated, the safety valve cannot rise normally because the panel 3 presses it down. This allows the gas inside the pot to be discharged through the fifth mounting hole 27 set on the steel cover 2 and the safety valve, so that the gas pressure inside the pot cannot increase. The inner buckling edge 23 set on the steel cover 2 is offset from the outer buckling edge 01 set on the pot body 1, with no buckling amount. At this time, the lid handle 4 can be lifted upward.

[0105] 2) Open lid state → Closed lid state

[0106] Rotating the lid handle 4 clockwise causes the rotating block 5 to rotate synchronously with it, as the handle 4 is connected to the rotating block 5 via connecting screws 52. The first rack 53 on the rotating block 5 meshes correctly with the gear 61, and the gear 61 is mounted on the fixed shaft 32 located below the panel 3. The positioning grooves 33 at both ends of the panel 3 fit onto the protrusions 711 on the side ear bodies 71, which are locked to the pot body 1 by fastening screws. This prevents the panel 3 from rotating, thus forcing the gear 61 to rotate counterclockwise around the fixed shaft 32 below the panel 3. Furthermore, the gear 61 is fixed to the steel lid 2... When the arc-shaped teeth are correctly meshed, gear 61 drives the arc-shaped teeth to rotate counterclockwise. Since the arc-shaped teeth are fixed on the steel cover 2, they drive the steel cover 2 to rotate counterclockwise. When the rotating block 5 rotates to the edge of the set elongated notch 1321 and collides with the limiting rib 34 set below the panel 3, the rotating block 5 is blocked and cannot continue to rotate. At this time, the steel cover 2 is just rotated to the closed position. At this time, the inner edge 23 set below the steel cover 2 and the outer protruding edge set below the pot body 1 are correctly engaged. The safety valve is concentric with the fourth through hole 36 set below the panel 3. When the pot body 1 is heated, the air pressure inside the pot can push the safety valve upward normally through the fourth through hole 36 set below the panel 3, so that a relatively sealed space is formed inside the pot, allowing the pot to be pressurized normally. If the lid handle 4 is rotated in the opposite direction, the raised safety valve will lock the panel 3 and the steel cover 2, so that the lid cannot be forcibly opened when there is a certain air pressure inside the pot, realizing the self-locking function. You need to wait for the pressure inside the pot to drop to a safe range and for the safety valve to descend before you can turn the lid handle 4 counterclockwise to open the pot lid.

[0107] The innovation of this embodiment is:

[0108] 1) The pressure cooker can be opened and closed with a single touch by rotating the lid handle 4, eliminating the cumbersome operation of traditional pressure cookers where you need to use both hands to hold the lid and rotate the handle 4. This makes the operation simpler and more user-friendly.

[0109] 2) The lid and the pot body 1 are precisely aligned and fastened by fitting the protrusion 711 of the side ear body 71 with the apex of the positioning groove 33 of the panel 3. This eliminates the traditional method of relying on multiple positioning and fastening of the lid and the pot body 1, making the alignment method simpler and more convenient.

[0110] 3) Through the linkage of the safety valve, lid, and panel, the pressure cooker can only pressurize normally when properly locked. The safety valve will drop and open the pressure cooker only when the pressure inside the pot drops to a safe range, thus realizing the pressure cooker's safety self-locking function and making the pressure cooker safer and more reliable to use.

[0111] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. A screw-on pressure cooker, comprising a pot body and a pot lid, wherein side lugs are installed on both sides of the pot body, characterized in that: The pot lid includes a steel lid, a panel, a lid handle, a rotating block, a gear, a central nut, and a central stud. The panel has a first mounting hole in its center and a fixing shaft on its lower side. The lid handle has a positioning platform on its bottom surface, and a first positioning hole on its bottom surface. The rotating block has a second mounting hole in its center, and the steel lid has a third mounting hole in its center. The central stud passes through the second and third mounting holes sequentially and is then tightened with the central nut. The nut of the central stud is located within the first positioning hole. The rotating block is locked to the positioning platform by a connecting screw, and the positioning platform is located within the first mounting hole. Inside; positioning grooves are respectively provided on the lower sides of both ends of the panel, and a boss matching the positioning groove is provided on the upper side of the side ear; an arc-shaped tooth is installed on the upper side of the steel cover, and the arc-shaped tooth is located on the inner bottom of the panel; the rotating block is provided with a first rack, and the gear is sleeved on the fixed shaft, with one end of the gear meshing with the first rack and the other end meshing with the arc-shaped tooth; the lower side of the outer edge of the steel cover is provided with evenly arranged and alternately distributed inner buckles and outer recesses, and the pot body and pot opening are provided with several evenly arranged and alternately distributed outer buckles and inner recesses; the inner buckles and the outer buckles are misaligned or overlapped as the lid handle rotates.

2. The screw-on pressure cooker according to claim 1, characterized in that: The gears are provided in pairs, and the arc-shaped teeth are provided in pairs corresponding to the fixed shaft; a pair of slots are provided on the outer edges of a pair of sides of the rotating block, and a pair of limiting ribs are provided on the lower side of the panel. The limiting ribs are inserted into the slots and constrain the relative movement between the two sides of the slots; a pair of side wings are formed on the outer edges of the rotating block between the two slots, and a pair of first racks extending in an arc shape along the outer edge direction are symmetrically provided on each side wing; a positioning block is provided on the upper side of the rotating block, and a first positioning groove is provided on the bottom surface of the positioning platform, and the positioning block is embedded in the first positioning groove.

3. The screw-on pressure cooker according to claim 1, characterized in that: It also includes a tactile post and a tension spring. The positioning platform is provided with a second positioning groove, and the side wall of the first mounting hole is provided with a second rack extending along the circumference of the hole. The tension spring and the tactile post are placed in the second positioning groove. The inner end of the tension spring abuts against the groove wall of the second positioning groove, and its outer end abuts against the inner end of the tactile post. The outer end of the tactile post abuts against the second rack and can slide along it.

4. The screw-on pressure cooker according to claim 1, characterized in that: It also includes a gravity valve assembly, which comprises a gravity valve core, a gravity valve seat, a gravity valve body, a gravity valve top block, a valve nut, a spring clip holder, a retaining ring, and an anti-clogging cover; the gravity valve core has a first exhaust channel inside, which extends through its upper and lower sides; the middle section of the gravity valve core has a first raised ring around its outer periphery, and its lower section has a threaded section around its outer periphery; the gravity valve seat has a first cavity opening downwards, and the first cavity is recessed outwards to form a first annular groove; the top of the gravity valve seat has a first through hole, which connects the first cavity to the outside; the gravity valve body has a second through hole and a second cavity opening downwards, the second through hole connecting the second cavity to the outside; the lower end of the gravity valve top block has a guide post; the spring clip holder contains... The valve core has a third through hole; the steel cover has a fourth mounting hole; the lower section of the gravity valve core passes through the fourth mounting hole and the third through hole in sequence and is tightened with the valve nut; the anti-clogging cover is fitted around the outer periphery of the spring clip holder and is locked in place by the outer periphery of the spring clip holder; the anti-clogging cover has several exhaust grooves; the bottom of the valve nut has a first exhaust hole that connects its interior to the outside; the retaining spring is locked in the first annular groove; the gravity valve body is fitted around the outer periphery of the gravity valve seat; the guide post passes through the second through hole; the first cavity is fitted around the outer periphery of the upper section of the gravity valve core; the lower end of the guide post passes through the first through hole and blocks the outlet of the first exhaust channel; after the gravity valve body is lifted, the lower end of the guide post releases the outlet of the first exhaust channel.

5. The screw-on pressure cooker according to claim 4, characterized in that: The gravity valve assembly further includes a first sealing ring and a second sealing ring; the first sealing ring is sleeved on the outer periphery of the guide post and clamped between the top of the gravity valve body and the lower side of the gravity valve top block; a second annular groove is formed on the lower side of the first protruding ring, the second sealing ring is embedded in the second annular groove, and the lower side of the second sealing ring abuts against the upper side of the steel cover; the diameter of the first protruding ring is larger than the diameter of the fourth mounting hole; a second protruding ring is formed by a protrusion on the outer periphery of the upper section of the gravity valve core, and when the gravity valve body is sleeved on the outer periphery of the gravity valve core, the retaining ring is located above the second protruding ring.

6. The screw-on pressure cooker according to claim 4, characterized in that: The spring clip holder has three equally spaced support legs, which are folding buckles. The inner side of the anti-clogging cover has a third protruding ring protruding inward. When the anti-clogging cover is fitted onto the outer periphery of the spring clip holder, the buckles of the support legs lock the lower side of the third protruding ring. Several exhaust grooves are arranged vertically and parallel to each other on the outer periphery of the anti-clogging cover, and several ventilation holes are opened on the lower side of the anti-clogging cover.

7. The screw-on pressure cooker according to claim 1, characterized in that: It also includes a pressure relief safety valve assembly, which includes a pressure relief safety valve seat, a pressure relief safety valve stem, and a pressure relief safety valve cap. The lower outer periphery of the pressure relief safety valve seat is recessed inward to form a third annular groove. A second exhaust channel is provided inside the pressure relief safety valve seat, penetrating its upper and lower sides. The outlet of the second exhaust channel has a conical opening structure, with the diameter gradually increasing from bottom to top. The lower section of the pressure relief safety valve stem protrudes outward to form a conical convex ring, with the diameter gradually increasing from bottom to top. A fourth protruding ring is provided on the outer periphery of the lower section of the pressure relief safety valve stem. The inlet section of the second exhaust channel... The inner wall near the conical opening structure is recessed outward to form a fourth annular groove; the top outer circumference of the pressure relief valve stem is recessed inward to form a fifth annular groove; the lower part of the pressure relief valve cap is bent inward to form an annular fold, which is fastened within the fifth annular groove; the pressure relief valve seat is inserted into the second exhaust channel, and the fourth protruding ring is inserted into the fourth annular groove; the steel cover has a sixth mounting hole, the pressure relief valve seat is inserted into the sixth mounting hole, and the third annular groove is fastened around the periphery of the sixth mounting hole; the pressure relief valve seat is made of silicone material.

8. The screw-on pressure cooker according to claim 1, characterized in that: It also includes a safety valve assembly, which comprises a safety valve tube, a safety valve lower part, a safety valve core, a silicone gasket, a third sealing ring, and a conical spring; the lower end of the safety valve tube is threadedly connected to the upper end of the safety valve lower part, with a cavity between them; the top of the safety valve tube has a second vent hole communicating with the cavity, and its lower part has a raised annular cap; the lower outer circumference of the safety valve lower part has a sixth annular groove, and the silicone gasket is fitted into the sixth annular groove; the bottom of the safety valve lower part has a third vent hole communicating with the cavity; the upper outer circumference of the safety valve core protrudes outward to form a fifth raised ring, the diameter of which is larger than the diameter of the third vent hole; the safety valve... The lower section of the valve core passes through the third vent hole, and the third sealing ring is fitted around the outer periphery of the lower section of the safety valve core and closely abuts the lower side of the fifth protruding ring; the lower end of the conical spring is fitted around the outer periphery of the upper section of the safety valve core and closely abuts the upper side of the fifth protruding ring, and the upper end of the conical spring abuts against the inner wall of the safety valve tube cavity; the steel cover has a fifth mounting hole, and the safety valve assembly is fitted into the fifth mounting hole, the diameter of the annular cap and the diameter of the silicone gasket are both larger than the diameter of the fifth mounting hole; the panel has a fourth through hole, and the safety valve tube passes through the fourth through hole and communicates with the outside as the steel cover rotates, or the safety valve tube moves inside the lower side of the panel as the steel cover rotates.

9. The screw-on pressure cooker according to claim 1, characterized in that: It also includes a sliding auxiliary component, which comprises a steel ball body, a steel ball sleeve, and a mounting cylinder. The steel ball sleeve is an upward-opening cylindrical structure with a fifth through hole at its bottom and a long notch on its side wall, which penetrates the top surface of the steel ball sleeve. The diameter of the fifth through hole is smaller than the diameter of the steel ball body. The mounting cylinder is located on the lower side of the panel, and a retaining strip is provided inside the mounting cylinder. The steel ball body is inserted into the steel ball sleeve, and the steel ball sleeve is fitted into the mounting cylinder from bottom to top. The retaining strip is engaged in the long notch, and the lower side of the steel ball body abuts against the steel cover. Two sets of the sliding auxiliary component are provided, located at both ends of the panel along its length.

10. The screw-on pressure cooker according to claim 1, characterized in that: The side ear includes an ear base, a side ear body, and a protective ring; the ear base is installed on the pot body, and a receiving groove is opened on the lower inner side of the side ear body. The side ear body is locked onto the ear base by fastening screws, and the ear base is embedded in the receiving groove; a buckle groove is opened on both sides of the lower part of the side ear body, and a buckle hook is provided on both sides of the protective ring. The protective ring is locked together with the side ear body by the buckle hooks being embedded in the buckle grooves.

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