A liquid drainage structure for a cooking utensil

Abstract

A liquid discharge structure of a cooking utensil comprises an inner pot, wherein a stirrer driven by a motor for forward and reverse rotation is arranged in the inner pot, a drainage structure is arranged at the bottom of the inner pot, the drainage structure comprises a leak-proof part sealed on a first drainage hole at the bottom of the inner pot and a push rod located at the bottom of the inner pot and connected with the leak-proof part, the motor is connected with the push rod through a lifting mechanism, the lifting mechanism comprises a push rod, the motor lifts the push rod and connects with the push rod to push open the leak-proof part to achieve liquid discharge, and the time before the push rod rises to connect with the push rod is the period of forward or reverse rotation of the stirrer. A mounting hole is arranged at the bottom of the inner pot, a second coupling with an inner cavity is arranged in the mounting hole, the bottom of the first coupling with a third drainage hole is connected with the second coupling, the top of the first coupling is connected with the stirrer, and a drainage seat with a first drainage hole is inserted in the inner cavity. The present invention has the characteristics of good stirring quality and reliable sealing.

Description

Technical Field

[0001] The invention relates to a liquid drainage structure of a cooking utensil. Background Art

[0002] Chinese patent document number CN209315557U disclosed a middle cover assembly with a water receiving tray on September 28, 2018, including a middle cover and a heating tray, the heating tray is arranged at the inner bottom of the middle cover, a water receiving tray is arranged between the heating tray and the bottom wall of the middle cover, a water receiving trough is arranged on the water receiving tray, the orthographic projection of the outer edge of the heating tray falls into the water receiving trough, a water outlet is arranged on the water receiving tray at the bottom of the trough, and a drain outlet is arranged on the bottom wall of the middle cover facing the water outlet of the water receiving tray. The drainage structure of this cooking utensil is relatively complex and inefficient, so it needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a drainage structure of a cooking utensil with good stirring quality and reliable sealing, so as to overcome the shortcomings of the prior art.

[0004] A drainage structure of a cooking utensil designed for this purpose includes an inner pot, and its structural feature is that a stirrer driven by a motor for forward and reverse rotation is arranged in the inner pot, and a drainage structure is arranged at the bottom of the inner pot. The drainage structure includes a leak-proof part sealing a first drainage hole at the bottom of the inner pot and a push rod located at the bottom of the inner pot and connected to the leak-proof part. The motor is connected to the push rod through a lifting mechanism, and the lifting mechanism includes a push rod. The motor lifts the push rod to connect with the push rod to push open the leak-proof part to achieve drainage, and the time from the rise of the push rod to the connection with the push rod is the cycle of the forward or reverse rotation of the stirrer.

[0005] Furthermore, a mounting hole is provided at the bottom of the inner pot, a second coupling with an inner cavity is arranged in the mounting hole, the bottom of the first coupling with a third drain hole is connected to the second coupling, the top of the first coupling is connected to the agitator, a drain seat with the first drain hole is inserted in the inner cavity, the interior of the inner pot is connected with the inner cavity of the second coupling and the first drain hole in sequence through the third drain hole, a fourth limiting boss with a limiting hole is provided in the drain seat, one end of the push rod passes through the limiting hole and is connected to the leakage-proof part covering the first drain hole, and a reset spring is crimped between the fourth limiting boss and the other end of the push rod.

[0006] Furthermore, the lifting mechanism also includes a lower fixed seat arranged at the bottom of the inner pot, and the rotating drum is rotatably arranged on the lower fixed seat. The upper part of the rotating drum is connected to the second coupling. The rotating drum is meshed with the gear through the first gear teeth arranged on its side wall, and the gear is arranged on the output shaft of the motor.

[0007] Furthermore, the second coupling is arranged in the drum, the inner wall of the upper part of the drum is provided with second gear teeth, the outer wall of the second coupling is provided with third gear teeth, and the second gear teeth are meshed with the third gear teeth.

[0008] Furthermore, the lifting mechanism includes a hollow lifting connection piece arranged in the lower fixed seat, the outer wall of the lifting connection piece is threadedly connected to the inner wall of the rotating drum, the hollow liquid conducting seat is inserted in the lifting connection piece, and the push rod is arranged on the liquid conducting seat; the interior of the inner pot is connected with the inner cavity of the second coupling, the first drainage hole, the inner cavity of the drainage seat, the inner cavity of the rotating drum, and the inner cavity of the liquid conducting seat in sequence through the third drainage hole.

[0009] Furthermore, a hollow assembly boss recessed downward is provided on the lower fixed seat, the lower part of the rotating drum is inserted into the assembly boss, and a limiting rib for preventing the lifting connection member from rotating relative to the lower fixed seat is provided on the outer wall of the bottom of the lifting connection member, and a guide groove is provided on the inner wall of the assembly boss along the axial direction. A third limiting boss located below the guide groove is also provided on the inner wall of the assembly boss, and the limiting rib is clamped in the guide groove, and the limiting rib is located between the lower part of the rotating drum and the third limiting boss.

[0010] Furthermore, a first thread consisting of more than two oblique protrusions is arranged on the inner wall of the lower part of the rotating drum, and a second thread connected to the first thread is arranged on the outer wall of the lifting connection member.

[0011] Furthermore, a base plate is provided on the top of the liquid guiding seat, the bottom of the base plate is connected to the top of the lifting connecting piece, the top rod is provided on the base plate, and the base plate is also provided with a second drainage hole located next to the top rod; the interior of the inner pot is connected with the inner cavity of the second coupling, the first drainage hole, the inner cavity of the drainage seat, the inner cavity of the rotating drum, the second drainage hole, and the inner cavity of the liquid guiding seat in sequence through the third drainage hole.

[0012] Furthermore, the inner cavity of the second coupling includes an upper inner cavity and a lower inner cavity, one end of a drain seat with a sealing structure is inserted into the upper inner cavity and seals and separates the upper inner cavity from the lower inner cavity, the other end of the drain seat is located in the lower inner cavity, two or more first limiting bosses with guide slots are arranged on the side wall of the lower inner cavity, and the other end of the drain seat is provided with two or more plug blocks at intervals along the circumferential direction, and the plug blocks are clamped in the corresponding guide slots after the drain seat is rotated axially relative to the second coupling.

[0013] Furthermore, the outer wall of the other end of the drain seat is provided with more than two reinforcing ribs which facilitate the axial rotation of the drain seat relative to the second coupling, and the reinforcing ribs are located below the insert block.

[0014] The inner pot of the present invention is provided with an agitator driven by a motor for forward and reverse rotation, and the bottom of the inner pot is provided with a drainage structure, the drainage structure includes a leak-proof part sealed on a first drainage hole at the bottom of the inner pot and a push rod located at the bottom of the inner pot and connected with the leak-proof part, the motor is connected with the push rod through a lifting mechanism, the lifting mechanism includes a push rod, the motor lifts the push rod to connect with the push rod to push open the leak-proof part to achieve drainage, and the time before the push rod rises to connect with the push rod is the period of forward or reverse rotation of the agitator; before the push rod rises to connect with the push rod, under the control of the central controller of the cooking utensil, the forward or reverse rotation of the motor can drive the agitator to achieve forward stirring or reverse stirring in the inner pot, and when the stirring is finished and drainage is required, under the control of the central controller, the forward or reverse rotation of the motor causes the push rod to rise, so that the push rod pushes the push rod to push the leak-proof part away from the first drainage hole, so that the water or other liquid in the inner pot can flow out, and the whole operation process is simple and efficient, with reliable sealing and sufficient stirring, thereby improving the work efficiency and stability of the product.

[0015] When the product starts to work, the motor drives the drum to rotate forward through the gears. Since the drum is clamped between the lower fixed seat and the bottom of the outer pot, the drum can only rotate axially and cannot move up and down. The drum that rotates axially in situ drives the second coupling connected to its upper part to rotate, and the first coupling connected to the second coupling rotates accordingly. The first coupling drives the agitator connected to it to rotate forward or reversely to achieve the stirring function. At the same time, since the lifting connection can only move up and down between the lower part of the drum and the third limiting boss located on the lower fixed seat under the action of the limiting rib, the lower fixed seat is fixed and motionless, so the lifting connection moves upward and the lifting connection The top of the component pushes the liquid guide seat up, and the push rod on the liquid guide seat squeezes the reset spring on the push rod and pushes out the leak-proof component on the push rod. At this time, the first drainage hole is connected, and the liquid in the inner pot flows into the inner cavity of the liquid guide seat from the third drainage hole on the first coupling, the inner cavity of the second coupling, the first drainage hole, the inner cavity of the drainage seat, the inner cavity of the drum, and the second drainage hole in turn, and is discharged from the lower opening of the inner cavity of the liquid guide seat, thereby realizing the drainage function. When the drainage is completed, the motor drives the drum to rotate in the opposite direction through the drum, and the lifting connection moves downward. The push rod is reset and moves downward under the elastic action of the reset spring. At this time, the first drainage hole is blocked by the leak-proof component to realize the sealing function. In addition, this product integrates drainage, sealing and stirring functions, can meet the different needs of users, and has good flexibility.

[0016] The inner cavity of the second coupling in the present invention includes an upper inner cavity and a lower inner cavity, one end of the drain seat with a sealing structure is inserted into the upper inner cavity and seals and separates the upper inner cavity from the lower inner cavity, the other end of the drain seat is located in the lower inner cavity, two or more first limiting bosses with guide slots are arranged on the side wall of the lower inner cavity, and the other end of the drain seat is provided with two or more plug-in blocks at intervals along the circumferential direction, and the plug-in blocks are clamped in the corresponding guide slots after the drain seat rotates axially relative to the second coupling; when this product is used for draining rice soup, since the drain seat itself has a sealing structure, when the drain seat is arranged in the inner cavity of the second coupling, the rice soup can only flow into the inner cavity of the second coupling from the third drainage hole on the first coupling and flow out through the rising of the leakage-proof component. The first drainage hole flows into the inner cavity of the drain seat. After long-term use, some rice soup will remain in the inner cavity of the second coupling and the inner cavity of the drain seat. Since the rice soup contains starch, it is easy to clump and solidify in the inner cavity of the second coupling and the drain seat, or even at the connection between the top of the drain seat and the leak-proof part after it cools down. At this time, it is easy to cause blockage and affect the sealing effect of the leak-proof part, thereby reducing the sealing performance of the product. Therefore, the user can later rotate the drain seat relative to the second coupling, separate the drain seat from the second coupling, separate the push rod from the leak-proof part, and then remove the push rod from the limit hole on the drain seat to clean the second coupling and the drain seat, thereby improving the durability and stability of the product.

[0017] In summary, the present invention has the characteristics of good stirring quality and reliable sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the assembly structure between the inner pot, the second coupling and the drain seat.

[0020] Figure 3 for Figure 2 Enlarged view of point A in .

[0021] Figure 4 It is a schematic diagram of the exploded structure between the first coupling, the drain seat and the second coupling.

[0022] Figure 5 It is a schematic diagram of the exploded structure between the first coupling, the drain seat and the second coupling from another angle.

[0023] Figure 6 It is a schematic diagram of the exploded structure between the liquid guide seat, the rotating drum, the lifting connection and the lower fixed seat.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating drum when viewed from above.

[0025] Figure 8 for Figure 1 Enlarged view of point B in .

[0026] In the figure: 1 is an outer pot, 2 is an inner pot, 3 is a first coupling, 3.1 is a third drain hole, 3.2 is a connector, 4 is a second coupling, 4.2 is a first limiting boss, 5 is a leak-proof member, 6 is a push rod, 7 is a liquid guide seat, 7.1 is a push rod, 7.2 is a second drain hole, 8 is a motor, 9 is a gear, 10 is a lower fixed seat, 10.1 is a guide groove, 10.2 is a third limiting boss, 10.3 is an assembly boss, 12 is a lifting connector, 12.1 is a limiting rib, 13 is a rotating drum, 13.1 is a protrusion, 14 is a first sealing member, 15 is a steaming grid, 16 is a heating plate, 17 is a second sealing member, 18 is a drain seat, 18.1 is an insert, 18.2 is a reinforcing rib, 18.3 is the first drain hole, 18.4 is a limiting hole, 18.5 is a fourth limiting boss, and 19 is a reset spring. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] See also Figure 1-Figure 8 The drainage structure of the cooking utensil comprises an inner pot 2, wherein a stirrer driven by a motor 8 for forward and reverse rotation is arranged in the inner pot 2, and a drainage structure is arranged at the bottom of the inner pot 2, wherein the drainage structure comprises a leak-proof member 5 sealed on a first drainage hole 18.3 at the bottom of the inner pot 2 and a push rod 6 located at the bottom of the inner pot 2 and connected with the leak-proof member 5, wherein the motor is connected with the push rod 6 through a lifting mechanism, wherein the lifting mechanism comprises a push rod 7.1, and the motor lifts the push rod 7.1 to connect with the push rod 6 to push open the leak-proof member 5 to realize drainage, and the time from when the push rod 7.1 rises to when it connects with the push rod 6 is the cycle of the forward or reverse rotation of the stirrer.

[0029] A mounting hole is provided at the bottom of the inner pot 2, and a second coupling 4 with an inner cavity is provided in the mounting hole. The bottom of the first coupling 3 with a third drain hole 3.1 is connected to the second coupling 4, and the top of the first coupling 3 is connected to the agitator. A drain seat 18 with a first drain hole 18.3 is inserted in the inner cavity. The interior of the inner pot 2 is connected with the inner cavity of the second coupling 4 and the first drain hole 18.3 in sequence through the third drain hole 3.1. A fourth limiting boss 18.5 with a limiting hole 18.4 is provided in the drain seat 18. One end of the push rod 6 passes through the limiting hole 18.4 and is connected to the leakage-proof member 5 covering the first drain hole 18.3. A reset spring 19 is crimped between the fourth limiting boss 18.5 and the other end of the push rod 6.

[0030] In this embodiment, the second coupling 4 is arranged in the mounting hole through the first seal 14, the top of the drain seat 18 is sleeved with a third seal, and the first coupling 3 and the second coupling 4 are fixed by bolts or screws.

[0031] More specifically, the second coupling 4 is sleeved with a second sealing member 17 to improve the tight connection between the second coupling and the inner pot.

[0032] The lifting mechanism also includes a lower fixed seat 10 arranged at the bottom of the inner pot 2, and a rotating drum 13 is rotatably arranged on the lower fixed seat 10. The upper part of the rotating drum 13 is connected to the second coupling 4. The rotating drum 13 is meshed with the gear 9 through the first gear teeth arranged on its side wall, and the gear 9 is arranged on the output shaft of the motor 8.

[0033] The second coupling 4 is arranged in the drum 13. The inner wall of the upper part of the drum 13 is provided with second gear teeth. The outer wall of the second coupling 4 is provided with third gear teeth. The second gear teeth mesh with the third gear teeth.

[0034] The lifting mechanism includes a hollow lifting connection member 12 arranged in the lower fixed seat 10, the outer wall of the lifting connection member 12 is threadedly connected to the inner wall of the rotating drum 13, the hollow liquid guiding seat 7 is inserted in the lifting connection member 12, and the push rod 7.1 is arranged on the liquid guiding seat 7; the interior of the inner pot 2 is connected with the inner cavity of the second coupling 4, the first drainage hole 18.3, the inner cavity of the drainage seat 18, the inner cavity of the rotating drum 13, and the inner cavity of the liquid guiding seat 7 in sequence through the third drainage hole 3.1.

[0035] The lower fixed seat 10 is provided with a hollow assembly boss 10.3 which is recessed downwards, and the lower part of the rotating drum 13 is inserted into the assembly boss 10.3. The outer wall at the bottom of the lifting connection member 12 is provided with a limiting rib 12.1 for preventing the lifting connection member 12 from rotating relative to the lower fixed seat 10. The inner wall of the assembly boss 10.3 is provided with a guide groove 10.1 along the axial direction, and the inner wall of the assembly boss 10.3 is further provided with a third limiting boss 10.2 located below the guide groove 10.1. The limiting rib 12.1 is clamped in the guide groove 10.1, and the limiting rib 12.1 is located between the lower part of the rotating drum 13 and the third limiting boss 10.2.

[0036] The inner wall of the lower part of the rotating drum 13 is provided with a first thread consisting of more than two oblique protrusions 13.1, and the outer wall of the lifting connecting member 12 is provided with a second thread connected with the first thread.

[0037] In this embodiment, the distance between the lower part of the rotating drum and the third limiting boss is the maximum stroke that the lifting connection can move, which prevents the lifting connection from moving excessively and ensures the working stability of the product.

[0038] A base plate is arranged on the top of the liquid guiding seat 7, the bottom of which is connected to the top of the lifting connecting piece 12, a top rod 7.1 is arranged on the base plate, and a second drainage hole 7.2 located next to the top rod 7.1 is also arranged on the base plate; the interior of the inner pot 2 is connected with the inner cavity of the second coupling 4, the first drainage hole 18.3, the inner cavity of the drainage seat 18, the inner cavity of the rotating drum 13, the second drainage hole 7.2, and the inner cavity of the liquid guiding seat 7 in sequence through the third drainage hole 3.1.

[0039] The inner cavity of the second coupling 4 includes an upper inner cavity and a lower inner cavity. One end of a drain seat 18 with a sealing structure is inserted into the upper inner cavity and seals and separates the upper inner cavity from the lower inner cavity. The other end of the drain seat 18 is located in the lower inner cavity. Two or more first limiting bosses 4.2 with guide slots are arranged on the side wall of the lower inner cavity. The other end of the drain seat 18 is provided with two or more plug blocks 18.1 at intervals along the circumferential direction. The plug blocks 18.1 are clamped in the corresponding guide slots after the drain seat 18 rotates axially relative to the second coupling 4.

[0040] The outer wall of the other end of the drain seat 18 is provided with more than two reinforcing ribs 18.2 for facilitating the axial rotation of the drain seat 18 relative to the second coupling 4. The reinforcing ribs 18.2 are located below the insert block 18.1.

[0041] In this embodiment, the reinforcing ribs 18.2 make it easier for the user to disassemble and clean the drain seat.

[0042] The drainage structure of the cooking utensil also includes a steaming rack 15 arranged in the inner pot 2, and an assembly hole is arranged in the middle of the steaming rack 15. The connecting head 3.2 located at the top of the first coupling 3 passes through the assembly hole and is connected to the stirrer located in the inner pot 2. The steaming rack 15 is also provided with more than one leakage hole, which is located next to the assembly hole and is connected to the third drainage hole 3.1.

[0043] When the drainage structure is used in cooking utensils such as electric rice cookers to cook low-sugar rice, the purpose of separating rice soup from rice can be quickly achieved, effectively reducing the starch content and sugar content in rice. Secondly, in the process of draining the rice soup, since the inner pot is also provided with a stirrer and a steaming grid, the stirrer can also rotate along with the drainage work to stir the rice in the cooking process, so that the starch and sugar of the rice are more fully dissolved in the water through stirring to form rice soup, and then separated from the rice soup through the leakage holes on the steaming grid, and then steamed and cooked rice, at this time, the sugar and starch content in the rice is less, and the rice soup is also richer and more delicious.

[0044] In this embodiment, the rotation and movement of the screw rod are utilized to cause the lifting connection member to move up and down relative to the rotating drum and the lower fixed seat, and the structure is simple and has good stability.

[0045] More specifically, it also includes an outer pot 1, the inner pot 2 is sleeved in the outer pot 1, the lower fixing seat 10 is connected to the bottom of the outer pot 1, and the rotating drum 13 is arranged between the lower fixing seat 10 and the bottom of the outer pot 1.

[0046] The drainage structure of the product can be applied to various cooking utensils with drainage requirements. When a simple drainage function is required, only a single pot body can be used. When a heating plate 16 is required to be set at the bottom of the inner pot to cook food, an outer pot 1 can be set for use according to different usage requirements, and a thermostat, a hot plate and other temperature control or heating components can be set in the outer pot.

[0047] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid drainage structure for a cooking utensil, comprising an inner pot (2), characterized in that An agitator driven by a motor (8) for forward and reverse rotation is arranged in the inner pot (2), and a drainage structure is arranged at the bottom of the inner pot (2), the drainage structure comprising a leak-proof part (5) sealed on a first drainage hole (18.3) at the bottom of the inner pot (2) and a push rod (6) located at the bottom of the inner pot (2) and connected to the leak-proof part (5), the motor is connected to the push rod (6) via a lifting mechanism, the lifting mechanism comprises a push rod (7.1), the motor lifts the push rod (7.1) to connect with the push rod (6) to push open the leak-proof part (5) to achieve drainage, and the time from the push rod (7.1) rising to the time it connects with the push rod (6) is the period of forward or reverse rotation of the agitator; The bottom of the inner pot (2) is provided with a mounting hole, the second coupling (4) with an inner cavity is arranged in the mounting hole, the bottom of the first coupling (3) with a third drainage hole (3.1) is connected to the second coupling (4), the top of the first coupling (3) is connected to the stirrer, the drainage seat (18) with the first drainage hole (18.3) is inserted in the inner cavity, the interior of the inner pot (2) is connected with the inner cavity of the second coupling (4) and the first drainage hole (18.3) in sequence through the third drainage hole (3.1), the drainage seat (18) is provided with a fourth limiting boss (18.5) with a limiting hole (18.4), one end of the push rod (6) passes through the limiting hole (18.4) and is connected to the leak-proof member (5) covering the first drainage hole (18.3), and the return spring (19) is pressed between the fourth limiting boss (18.5) and the other end of the push rod (6); It also includes a lower fixed seat (10) arranged at the bottom of the inner pot (2), a rotating drum (13) is rotatably arranged on the lower fixed seat (10), the upper part of the rotating drum (13) is connected to the second coupling (4), the rotating drum (13) is meshed with a gear (9) through a first gear tooth arranged on its side wall, and the gear (9) is arranged on the output shaft of the motor (8); The second coupling (4) is arranged in the rotating drum (13), the inner wall of the upper part of the rotating drum (13) is provided with second gear teeth, the outer wall of the second coupling (4) is provided with third gear teeth, and the second gear teeth are meshed with the third gear teeth; The lifting mechanism comprises a hollow lifting connection piece (12) arranged in the lower fixed seat (10); the outer wall of the lifting connection piece (12) is threadedly connected to the inner wall of the rotating drum (13); the hollow liquid guide seat (7) is inserted into the lifting connection piece (12); and the lifting rod (7.1) is arranged on the liquid guide seat (7); the interior of the inner pot (2) is connected with the inner cavity of the second coupling (4), the first drainage hole (18.3), the inner cavity of the drainage seat (18), the inner cavity of the rotating drum (13), and the inner cavity of the liquid guide seat (7) in sequence through the third drainage hole (3.1); A base plate is arranged on the top of the liquid guide seat (7), the bottom of which is connected to the top of the lifting connection member (12), a top rod (7.1) is arranged on the base plate, and a second drainage hole (7.2) is also arranged on the base plate next to the top rod (7.1); the interior of the inner pot (2) is connected to the inner cavity of the second coupling (4), the first drainage hole (18.3), the inner cavity of the drainage seat (18), the inner cavity of the rotating drum (13), the second drainage hole (7.2), and the inner cavity of the liquid guide seat (7) in sequence through the third drainage hole (3.1).

2. The drain structure of the cooking utensil according to claim 1, characterized in that The lower fixed seat (10) is provided with a hollow assembly boss (10.3) which is recessed downwards, and the lower part of the rotating drum (13) is inserted into the assembly boss (10.3). The outer wall of the bottom of the lifting connection member (12) is provided with a limiting rib (12.1) for preventing the lifting connection member (12) from rotating relative to the lower fixed seat (10). The inner wall of the assembly boss (10.3) is provided with a guide groove (10.1) in the axial direction. The inner wall of the assembly boss (10.3) is also provided with a third limiting boss (10.2) located below the guide groove (10.1). The limiting rib (12.1) is clamped in the guide groove (10.1), and the limiting rib (12.1) is located between the lower part of the rotating drum (13) and the third limiting boss (10.2).

3. The drain structure of the cooking utensil according to claim 1, characterized in that A first thread consisting of two or more oblique protrusions (13.1) is arranged on the inner wall of the lower part of the rotating cylinder (13), and a second thread connected to the first thread is arranged on the outer wall of the lifting connecting member (12).

4. The drain structure of the cooking utensil according to claim 1, characterized in that The inner cavity of the second coupling (4) comprises an upper inner cavity and a lower inner cavity. One end of a drain seat (18) with a sealing structure is inserted into the upper inner cavity and seals and separates the upper inner cavity from the lower inner cavity. The other end of the drain seat (18) is located in the lower inner cavity. Two or more first limiting bosses (4.2) with guide slots are arranged on the side wall of the lower inner cavity. The other end of the drain seat (18) is provided with two or more plug blocks (18.1) at intervals along the circumferential direction. The plug blocks (18.1) are clamped in the corresponding guide slots after the drain seat (18) is rotated axially relative to the second coupling (4).

5. The drain structure of the cooking utensil according to claim 1, characterized in that The outer wall of the other end of the drain seat (18) is also provided with more than two reinforcing ribs (18.2) for facilitating the axial rotation of the drain seat (18) relative to the second coupling (4), and the reinforcing ribs (18.2) are located below the insert block (18.1).

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