Self-operating regulation structure for steam valve on lid of electric cooker and method therefor

Abstract

A self-operating regulation structure for a steam valve on a lid of an electric cooker and a method therefor, relating to the technical field of electric cookers. The self-operating regulation structure for a steam valve on a lid of an electric cooker comprises a steam valve end cover (2), a folding arm (3), rotary regulation wheels (4), and a floating disc (5). A rotating shaft (302) is mounted at one end of the folding arm (3), a limiting support seat (504) is mounted at the upper end of the floating disc (5), and a rotating roller (506) is mounted above the limiting support seat (504). By means of air pressure-induced linkage, in cooperation with the folding arm (3) and the rotary regulation wheels (4), steam regulation is implemented; and on the basis of the actual air pressure, in combination with the weight of the floating disc (5), the effect of automatically opening and closing the steam valve can be achieved. The present invention has a simple structure, is convenient to use and suitable for steam discharge in different environments, and improves the internal air pressure stability of an electric cooker, so as to facilitate long-term operation. Therefore, the problems that existing steam valves of electric cookers have a single structure and a poor self-adaptive regulation effect during actual use, and cannot adapt to operating environments of different pressures are solved.

Description

A self-adjusting structure and method for the steam valve of a rice cooker lid Technical Field

[0001] This invention relates to the field of rice cooker technology, specifically to a self-adjusting structure and method for adjusting the steam valve on the lid of a rice cooker. Background Technology

[0002] Rice cookers typically have a steam outlet on the pot body. Higher pressure inside the pot helps improve cooking results and speed. Therefore, a steam valve is usually installed at the steam outlet to maintain pressure and prevent overflow.

[0003] Chinese Patent CN107440540A discloses a steam valve for a rice cooker and a rice cooker. The steam valve includes a valve seat, a valve cover that seals and engages with the valve seat, a valve body, and a valve core disposed between the valve seat and the valve cover. The valve seat has an air inlet, the valve cover has an air outlet, and an exhaust chamber is formed between the valve cover and the valve seat. The valve body has a valve cavity communicating with the air inlet and the exhaust chamber. A partition protrudes from the inner wall of the valve body, and a valve hole is formed on the partition. The valve core is located in the space above the partition in the valve cavity and is used to close the valve hole when engaging with the upper surface of the partition, and to open the valve hole when disengaging from the upper surface of the partition. This rice cooker steam valve maintains a "micro-pressure" effect on the rice cooker body during cooking.

[0004] The steam valve of the rice cooker mentioned above has a simple structure and poor adaptive adjustment effect in actual use, and cannot meet the working environment with different pressures. Therefore, it does not meet the existing needs. In this regard, we propose a self-adjusting structure and method for the steam valve of the rice cooker lid.

[0005] Summary of the Invention

[0006] The purpose of this invention is to provide a self-adjusting structure and method for the steam valve of a rice cooker lid, which solves the problems mentioned in the background art, such as the rice cooker steam valve having a simple structure, poor adaptive adjustment effect, and inability to meet the working environment of different pressures.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-contained electric rice cooker lid steam valve adjustment structure, comprising a steam valve end cap, a folding arm, a rotating adjustment disc, and a lifting disc. The steam valve end cap has an integrally formed notch on its upper part. The folding arm is installed inside the notch. There are two rotating adjustment discs, which are located at one end of the folding arm. The lifting disc is located inside the steam valve end cap.

[0008] One end of the folding arm is equipped with a rotating shaft, which is fixedly connected to two rotating adjustment discs.

[0009] The upper end of the lifting plate is equipped with a limit support seat, and a rotating roller is installed above the limit support seat. The rotating roller is in contact with the lower end face of the folding arm.

[0010] Preferably, the lower end of the steam valve end cap is provided with an integrally formed steam valve base, the lower end of the steam valve base is provided with a protective cover, the outside of the protective cover is installed with a buckle, and the protective cover is fixedly connected to the rice cooker lid by the buckle.

[0011] Preferably, a fastening ring is installed inside the protective cover, and an integrally formed sealing ring is provided inside the fastening ring. The protective cover is sealed to the rice cooker lid through the sealing ring. A piston ring is provided on the outer surface of the lifting plate, and the piston ring is sealed to the sealing ring.

[0012] Preferably, connecting seats are installed on both sides of the lower end of the sealing ring, the connecting seats are fixedly connected to the sealing ring, and a guide slide rod is installed on the upper end of the connecting seat. The two ends of the guide slide rod are fixedly connected to the connecting seat and the steam valve end cover, respectively, and the guide slide rod passes through the lifting plate and is slidably connected to the lifting plate.

[0013] Preferably, the upper end of the steam valve end cover is provided with an integrally formed movable port on both sides, and a steam guide port is provided at the lower end of the movable port. The steam guide port is connected to the movable port and the sealing ring respectively, and the rotating adjustment plate is sealed to the movable port.

[0014] Preferably, a heat insulation pad is installed on one side of the folding arm, the heat insulation pad is used to adjust the folding arm, and an integrally formed sealing block is installed at the lower end of the folding arm. An integrally formed fixing port is provided inside the notch, and the sealing block is embedded in the fixing port and sealed to the notch.

[0015] Preferably, connecting sleeves are installed on both sides of the rotating shaft, and the connecting sleeves are fixedly connected to the rotating adjusting disc and the rotating shaft respectively. A bearing seat is installed on the outside of the rotating shaft, and the rotating adjusting disc and the connecting sleeves are rotatably connected to the steam valve end cover through the bearing seat.

[0016] Preferably, the rotating adjusting disc is provided with a closed head on the outside and an integrally formed steam outlet is provided inside the rotating adjusting disc. The steam outlet is used to discharge steam inside the steam inlet, and the rotating shaft drives the closed head and the steam outlet to move inside the movable port.

[0017] Preferably, the lifting plate has an integrally formed opening in the middle, and six one-way sealing plates are provided inside the opening. Each of the six one-way sealing plates is connected to the lifting plate by a rotating spring shaft. The one-way sealing plates are rotatably connected to the lifting plate through the rotating spring shaft. An integrally formed guide rail is provided outside the limiting support seat. The limiting support seat is slidably connected to the steam valve end cover through the guide rail. The rotating roller is rotatably connected to the upper end of the limiting support seat through a bearing.

[0018] A method for using a self-adjusting steam valve adjustment structure for a rice cooker lid includes the following steps:

[0019] Step 1: Install the steam valve base onto the main body of the rice cooker lid using the protective cover and fastening ring, and seal the steam vent with the sealing ring;

[0020] Step 2: After fixing, the rice cooker will start the steaming process. The rice cooker will heat up, causing the rice and water to generate steam. The steam will rise and compress the lifting plate.

[0021] Step 3: The lifting plate is compressed by the steam and moves upward. After the lifting plate moves to the top of the steam valve base, it is restricted by the limit support seat and hangs at the bottom of the steam valve end cover. The steam rushes through the one-way sealing plate and enters the steam inlet.

[0022] Step 4: During the upward movement of the lifting plate, the limit support seat is also raised. The limit support seat is restricted by the guide rail and the guide slide rod to maintain vertical movement. During the movement, the rotating roller at the top of the limit support seat pushes the folding arm, which tilts up and drives the rotating shaft to rotate.

[0023] Step 5: During the rotation of the rotating shaft, the rotating adjustment plate rotates, so that the steam outlet is connected to the outside of the movable port, thereby allowing steam to be discharged from the inside of the steam valve end cover;

[0024] Step Six: After the steam inside the rice cooker is released, the lifting plate descends, the one-way sealing plate closes via the rotating spring shaft, and the folding arm presses down into the notch to seal the steam valve base and enable automatic adjustment.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. During the cooking process, the steam valve of this invention heats the rice cooker, causing the rice and water to generate steam. The steam rises, compressing the lifting plate. The lifting plate, compressed by the steam, moves upward. After reaching the top of the steam valve base, it is restricted by the limiting support seat and hovers at the bottom of the steam valve end cover. The steam then passes through the one-way sealing plate and enters the steam inlet for steam discharge. The steam is adjusted by a linkage mechanism of air pressure compression, combined with a folding arm and a rotating adjustment disc. The structure is stable, facilitating continuous use. Based on the actual air pressure and the weight of the lifting plate, the steam valve can be automatically switched on and off. The structure is simple, easy to use, and adaptable to steam discharge in different environments, improving the internal air pressure stability of the rice cooker for long-term operation.

[0027] 2. During use, the lifting plate inside the steam valve rises, causing the limiting support seat to rise as well. The limiting support seat is restricted by the guide rail and guide slide rod, maintaining vertical movement. During the movement, the rotating roller at the top of the limiting support seat pushes the folding arm, causing the folding arm to tilt upwards and drive the rotating shaft to rotate. As the rotating shaft rotates, the rotating adjustment plate rotates, connecting the steam outlet with the outside of the movable port, thereby allowing steam to be discharged from the inside of the steam valve end cover. The folding arm can be automatically adjusted by pressure or manually lifted, facilitating manual adjustment of the steam valve for steam adjustment work. It adapts to different usage environments, is easy to adjust, convenient to operate, and has good adaptability. Attached Figure Description

[0028] Figure 1 is a top-view isometric view of the present invention when it is closed;

[0029] Figure 2 is an isometric view of the invention when it is closed, viewed from below;

[0030] Figure 3 is a top-view isometric view of the invention after it has been opened;

[0031] Figure 4 is an axonometric view of the invention after it is turned on and viewed from below.

[0032] Figure 5 is an axonometric view of the front view after the folding arm of the present invention has been adjusted;

[0033] Figure 6 is an axonometric view of the folding arm of the present invention from the side;

[0034] Figure 7 is a diagram of the internal structure of the present invention.

[0035] In the diagram: 1. Steam valve chassis; 101. Protective cover; 102. Fastening ring; 103. Sealing ring; 104. Connecting seat; 105. Guide slide rod; 106. Steam inlet; 2. Steam valve end cover; 201. Notch; 202. Movable port; 203. Fixed port; 3. Folding arm; 301. Heat insulation pad; 302. Rotating shaft; 303. Sealing block; 4. Rotating adjusting disc; 401. Sealing head; 402. Steam outlet; 403. Connecting sleeve; 404. Bearing seat; 5. Lifting disc; 501. Through-hole area; 502. One-way sealing plate; 503. Rotary spring shaft; 504. Limiting support seat; 505. Guide rail; 506. Rotating roller. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] To address the issues of existing rice cooker steam valves, such as their simple structure, poor adaptive adjustment, and inability to meet the demands of varying pressure environments, please refer to Figures 1 and 5-7. This embodiment provides the following technical solution:

[0038] A self-adjusting steam valve adjustment structure for a rice cooker lid includes a steam valve end cap 2, a folding arm 3, a rotating adjustment disc 4, and a lifting disc 5. The steam valve end cap 2 has an integrally formed notch 201 on its upper part. The folding arm 3 is installed inside the notch 201. There are two rotating adjustment discs 4, which are located at one end of the folding arm 3. The lifting disc 5 is located inside the steam valve end cap 2. When the rice cooker is heating during the steam cooking process, the rice and water generate steam. The steam rises and compresses the lifting disc 5.

[0039] A rotating shaft 302 is installed at one end of the folding arm 3, and the rotating shaft 302 is fixedly connected to two rotating adjustment discs 4;

[0040] A limit support seat 504 is installed at the upper end of the lifting plate 5, and a rotating roller 506 is installed above the limit support seat 504. The rotating roller 506 is in contact with the lower end face of the folding arm 3.

[0041] The lifting plate 5 has an integrally formed opening 501 in the middle. Inside the opening 501 are six one-way sealing plates 502. Each of the six one-way sealing plates 502 is connected to the lifting plate 5 by a rotating spring shaft 503. The one-way sealing plates 502 are rotatably connected to the lifting plate 5 via the rotating spring shaft 503. The limit support 504 has an integrally formed guide rail 505 on its outside. The limit support 504 is slidably connected to the steam valve end cover 2 via the guide rail 505. The rotating roller 506 is rotatably connected to the upper end of the limit support 504 via a bearing. Steam pushes through the one-way sealing plates 502 and enters the steam inlet 106 for steam discharge. The steam is adjusted by means of air pressure compression, in conjunction with the folding arm 3 and the rotating adjustment plate 4. The structure is stable and easy to use continuously. According to the actual air pressure and the weight of the lifting plate 5 itself, the steam valve can be automatically opened and closed. The structure is simple, easy to use, adaptable to steam discharge in different environments, and improves the internal air pressure stability of the rice cooker for long-term operation.

[0042] Connecting seats 104 are installed on both sides of the lower end of the sealing ring 103. The connecting seats 104 are fixedly connected to the sealing ring 103. A guide slide rod 105 is installed on the upper end of the connecting seat 104. The two ends of the guide slide rod 105 are fixedly connected to the connecting seat 104 and the steam valve end cover 2, respectively. The guide slide rod 105 passes through the lifting plate 5 and is slidably connected to the lifting plate 5. The lifting plate 5 is squeezed by the steam and moves upward. After the lifting plate 5 moves to the top of the steam valve base 1, it is restricted by the limiting support seat 504 and hangs at the bottom of the steam valve end cover 2.

[0043] Specifically, during the cooking process, the rice cooker heats up, causing the rice and water to generate steam. The steam rises, compressing the lifting plate 5. The lifting plate 5, compressed by the steam, moves upwards and, after reaching the top of the steam valve base 1, is restricted by the limiting support 504, suspending at the bottom of the steam valve end cover 2. The steam then forces its way through the one-way sealing plate 502 and enters the steam inlet 106 for steam discharge. This steam adjustment is achieved through a linkage mechanism using air pressure compression, in conjunction with the folding arm 3 and the rotating adjustment disc 4. The structure is stable, facilitating continuous use. Based on the actual air pressure and the weight of the lifting plate 5, the steam valve can be automatically switched on and off. The structure is simple, easy to use, and adaptable to steam discharge in different environments, improving the internal air pressure stability of the rice cooker for long-term operation.

[0044] To address the problem that existing rice cooker steam valves have complex internal structures, making installation and disassembly inconvenient and hindering maintenance and repair, please refer to Figures 1-4 and 7. This embodiment provides the following technical solution:

[0045] The lower end of the steam valve end cap 2 is provided with an integrally formed steam valve base 1. The lower end of the steam valve base 1 is provided with a protective cover 101. The protective cover 101 is equipped with a buckle on the outside and is fixedly connected to the rice cooker lid through the buckle. The protective cover 101 is equipped with a fastening ring 102 inside. The steam valve base 1 is installed on the rice cooker lid body through the protective cover 101 and the fastening ring 102. The fastening ring 102 is provided with an integrally formed sealing ring 103 inside. The protective cover 101 is sealed to the rice cooker lid through the sealing ring 103. The outer surface of the lifting plate 5 is provided with a piston ring and is sealed to the sealing ring 103. The piston ring maintains the sealing effect inside the steam inlet 106 to adapt to the automatic adjustment work.

[0046] Both sides of the upper end of the steam valve end cover 2 are provided with integrally formed movable ports 202. The lower end of the movable port 202 is provided with a steam guide port 106. The steam guide port 106 is connected to the movable port 202 and the sealing ring 103 respectively. The rotating adjustment plate 4 is sealed to the movable port 202. The adjustment plate 4 can be easily rotated through the movable port 202 to perform the function of opening and closing the steam valve, which is convenient for operation.

[0047] Specifically, the steam valve base 1 is installed on the main body of the rice cooker lid through the protective cover 101 and the fastening ring 102. The steam port is sealed by the sealing ring 103, and the sealing effect inside the steam inlet 106 is maintained by the piston ring to adapt to the automatic adjustment work. The adjustment plate 4 can be easily rotated through the movable port 202 to perform the function of opening and closing the steam valve, which is convenient for operation.

[0048] To address the issue that existing rice cooker steam valves offer only a single adjustment method, failing to meet practical needs during actual use, please refer to Figures 3-7. This embodiment provides the following technical solution:

[0049] A heat insulation pad 301 is installed on one side of the folding arm 3. The heat insulation pad 301 is used to adjust the folding arm 3. An integrally formed sealing block 303 is installed at the lower end of the folding arm 3. An integrally formed fixing port 203 is provided inside the notch 201. The sealing block 303 is embedded in the inside of the fixing port 203 and is sealed to the notch 201. The folding arm 3 can be automatically adjusted by pressure or manually lifted, which facilitates manual adjustment of the steam valve for steam adjustment work. It is adaptable to different use environments, easy to adjust, easy to operate, and has good adaptability.

[0050] Connecting sleeves 403 are installed on both sides of the rotating shaft 302. The connecting sleeves 403 are fixedly connected to the rotating adjusting plate 4 and the rotating shaft 302 respectively. A bearing seat 404 is installed on the outside of the rotating shaft 302. The rotating adjusting plate 4 and the connecting sleeves 403 are rotatably connected to the steam valve end cover 2 through the bearing seat 404. The lifting plate 5 inside the steam valve rises, which drives the limit support seat 504 to rise. The limit support seat 504 is restricted by the guide rail 505 and the guide slide rod 105 to maintain vertical movement. During the movement, the rotating roller 506 at the top of the limit support seat 504 pushes the folding arm. 3. The folding arm 3 tilts up, causing the rotating shaft 302 to rotate. The rotating adjusting plate 4 has a closed head 401 on its outside and an integrally formed steam outlet 402 inside. The steam outlet 402 is used to discharge steam from inside the steam inlet 106. The rotating shaft 302 drives the closed head 401 and the steam outlet 402 to the position inside the movable port 202. During the rotation of the rotating shaft 302, the rotating adjusting plate 4 rotates, so that the steam outlet 402 is connected to the outside of the movable port 202, thereby allowing steam to be discharged from inside the steam valve end cover 2.

[0051] Specifically, during use, the lifting plate 5 inside the steam valve rises, causing the limiting support 504 to rise. The limiting support 504 is restricted by the guide rail 505 and the guide slide rod 105, maintaining vertical movement. During the movement, the rotating roller 506 at the top of the limiting support 504 pushes the folding arm 3, causing the folding arm 3 to tilt upwards, which in turn drives the rotating shaft 302 to rotate. During the rotation of the rotating shaft 302, the rotating adjustment plate 4 rotates, making the steam outlet 402 connected to the outside of the movable port 202, thereby allowing steam to be discharged from the inside of the steam valve end cover 2. The folding arm 3 can be automatically adjusted by pressure or manually lifted, facilitating manual adjustment of the steam valve for steam adjustment work. It adapts to different usage environments, is easy to adjust, convenient to operate, and has good adaptability.

[0052] A method for using a self-adjusting steam valve adjustment structure for a rice cooker lid includes the following steps:

[0053] Step 1: Install the steam valve base 1 onto the main body of the rice cooker lid using the protective cover 101 and fastening ring 102. Seal the steam port with the sealing ring 103. The piston ring maintains the sealing effect inside the steam inlet 106 to adapt to automatic adjustment. The adjustment disc 4 can be easily rotated through the movable port 202 to open and close the steam valve, making it easy to operate.

[0054] Step 2: After fixing, the rice cooker will start the steaming process. The rice cooker will heat up to produce steam from the rice and water. The steam will rise and compress the lifting plate 5.

[0055] Step 3: The lifting plate 5 is compressed by the steam and moves upward. After the lifting plate 5 moves to the top of the steam valve base 1, it is restricted by the limiting support seat 504 and hangs at the bottom of the steam valve end cover 2. The steam rushes through the one-way sealing plate 502 and enters the steam inlet 106. The steam is adjusted by means of air pressure compression, in conjunction with the folding arm 3 and the rotating adjustment plate 4. The structure is stable and easy to use continuously. According to the actual air pressure and the weight of the lifting plate 5 itself, the steam valve can be automatically opened and closed. The structure is simple, easy to use, adaptable to the steam discharge in different environments, and improves the internal air pressure stability of the rice cooker for long-term operation.

[0056] Step 4: During the upward movement of the lifting plate 5, the limiting support seat 504 is driven to rise. The limiting support seat 504 is restricted by the guide rail 505 and the guide slide rod 105 to maintain vertical movement. During the movement, the rotating roller 506 at the top of the limiting support seat 504 pushes the folding arm 3, which tilts up and drives the rotating shaft 302 to rotate. The folding arm 3 can be automatically adjusted by pressure or manually lifted, which facilitates manual adjustment of the steam valve for steam adjustment work. It is adaptable to different use environments, easy to adjust, easy to operate, and has good adaptability.

[0057] Step 5: During the rotation of the rotating shaft 302, the rotating adjustment plate 4 rotates, so that the steam outlet 402 is connected to the outside of the movable port 202, thereby allowing steam to be discharged from the inside of the steam valve end cover 2.

[0058] Step Six: After the steam inside the rice cooker is released, the lifting plate 5 descends, the one-way sealing plate 502 closes through the rotating spring shaft 503, and the folding arm 3 is pressed down into the notch 201 to seal the steam valve base 1 and perform automatic adjustment.

[0059] Working principle: In use, the steam valve base 1 is installed on the rice cooker lid body via the protective cover 101 and fastening ring 102. The steam port is sealed by the sealing ring 103. The piston ring maintains the sealing effect inside the steam inlet 106 to adapt to automatic adjustment. After fixing, the rice cooker heats up, causing the rice and water to generate steam. The steam moves upward, squeezing the lifting plate 5. The lifting plate 5 moves upward under the pressure of the steam. After the lifting plate 5 moves to the top of the steam valve base 1, it is restricted by the limiting support 504 and hangs at the bottom of the steam valve end cover 2. The steam breaks the one-way seal. Plate 502 enters the steam inlet 106 and is linked by air pressure compression, working with the folding arm 3 and rotating adjustment plate 4 to adjust the steam. The structure is stable and easy to use continuously. According to the actual air pressure and the weight of the lifting plate 5 itself, the steam valve can be automatically opened and closed. During the rotation of the rotating shaft 302, the rotating adjustment plate 4 rotates, so that the steam outlet 402 is connected to the outside of the movable port 202, thereby allowing steam to be discharged from the inside of the steam valve end cover 2. After the steam inside the rice cooker is discharged, the lifting plate 5 descends, the one-way sealing plate 502 closes through the rotating spring shaft 503, and the folding arm 3 is pressed down into the notch 201 to seal the steam valve base 1 and the steam valve base 2, thus performing automatic adjustment.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A self-adjusting steam valve adjustment structure for a rice cooker lid, comprising a steam valve end cap (2), a folding arm (3), a rotating adjustment disc (4), and a lifting disc (5), characterized in that, An integrally formed notch (201) is provided above the steam valve end cover (2), the folding arm (3) is installed inside the notch (201), two rotating adjustment discs (4) are provided, the two rotating adjustment discs (4) are located at one end of the folding arm (3), and the lifting disc (5) is located inside the steam valve end cover (2). One end of the folding arm (3) is equipped with a rotating shaft (302), and the rotating shaft (302) is fixedly connected to two rotating adjustment discs (4); The upper end of the lifting plate (5) is equipped with a limiting support seat (504), and a rotating roller (506) is installed above the limiting support seat (504). The rotating roller (506) is in contact with the lower end face of the folding arm (3).

2. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 1, characterized in that: The lower end of the steam valve end cap (2) is provided with an integrally formed steam valve base (1), and the lower end of the steam valve base (1) is provided with a protective cover (101). The protective cover (101) is equipped with a buckle on the outside, and the protective cover (101) is fixedly connected to the rice cooker lid by the buckle.

3. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 2, characterized in that: The protective cover (101) is equipped with a fastening ring (102) inside, and the fastening ring (102) is provided with an integrally formed sealing ring (103) inside. The protective cover (101) is sealed to the rice cooker lid through the sealing ring (103). The outer surface of the lifting plate (5) is provided with a piston ring, and the piston ring is sealed to the sealing ring (103).

4. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 3, characterized in that: Connecting seats (104) are installed on both sides of the lower end of the sealing ring (103). The connecting seats (104) are fixedly connected to the sealing ring (103), and a guide slide rod (105) is installed on the upper end of the connecting seat (104). The two ends of the guide slide rod (105) are fixedly connected to the connecting seat (104) and the steam valve end cover (2) respectively, and the guide slide rod (105) passes through the lifting plate (5) and is slidably connected to the lifting plate (5).

5. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 1, characterized in that: The upper end of the steam valve end cap (2) is provided with an integrally formed movable port (202) on both sides. The lower end of the movable port (202) is provided with a steam guide port (106). The steam guide port (106) is connected to the movable port (202) and the sealing ring (103) respectively. The rotating adjustment disc (4) is sealed to the movable port (202).

6. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 1, characterized in that: A heat insulation pad (301) is installed on one side of the folding arm (3). The heat insulation pad (301) is used to adjust the folding arm (3). An integrally formed sealing block (303) is installed at the lower end of the folding arm (3). An integrally formed fixing port (203) is provided inside the notch (201). The sealing block (303) is embedded in the inside of the fixing port (203) and sealed to the notch (201).

7. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 1, characterized in that: Connecting sleeves (403) are installed on both sides of the rotating shaft (302). The connecting sleeves (403) are fixedly connected to the rotating adjusting disc (4) and the rotating shaft (302) respectively. A bearing seat (404) is installed on the outside of the rotating shaft (302). The rotating adjusting disc (4) and the connecting sleeves (403) are rotatably connected to the steam valve end cover (2) through the bearing seat (404).

8. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 5, characterized in that: The rotating adjustment disc (4) is provided with a closed head (401) on the outside and an integrally formed steam outlet (402) is provided inside the rotating adjustment disc (4). The steam outlet (402) is used to discharge steam inside the steam inlet (106). The rotating shaft (302) drives the closed head (401) and the steam outlet (402) to move inside the movable port (202).

9. The self-contained electric rice cooker lid steam valve adjustment structure according to claim 1, characterized in that: The lifting plate (5) has an integrally formed opening (501) in the middle. The opening (501) has six one-way sealing plates (502) inside. Each of the six one-way sealing plates (502) is connected to the lifting plate (5) by a rotating spring shaft (503). The one-way sealing plates (502) are rotatably connected to the lifting plate (5) through the rotating spring shaft (503). The limiting support seat (504) has an integrally formed guide rail (505) on its outside. The limiting support seat (504) is slidably connected to the steam valve end cover (2) through the guide rail (505). The rotating roller (506) is rotatably connected to the upper end of the limiting support seat (504) through a bearing.

10. A method of using the self-contained electric rice cooker lid steam valve adjustment structure according to claim 9, characterized in that, Includes the following steps: Step 1: Install the steam valve base (1) on the main body of the rice cooker lid through the protective cover (101) and the fastening ring (102), and seal the steam port through the sealing ring (103); Step 2: After fixing, the rice cooker will heat up to produce steam from the rice and water. The steam will rise and squeeze the lifting plate (5). Step 3: The lifting plate (5) is squeezed by the steam and moves upward. After the lifting plate (5) moves to the top of the steam valve base (1), it is restricted by the limiting support seat (504) and hangs at the bottom of the steam valve end cover (2). The steam rushes through the one-way sealing plate (502) and enters the steam inlet (106). Step 4: During the process of the lifting plate (5) rising, it drives the limit support seat (504) to rise. The limit support seat (504) is restricted by the guide rail (505) and the guide slide rod (105) to maintain vertical movement. During the movement, the rotating roller (506) at the top of the limit support seat (504) pushes the folding arm (3), the folding arm (3) tilts up, and drives the rotating shaft (302) to rotate. Step 5: During the rotation of the rotating shaft (302), the rotating adjustment plate (4) is rotated so that the steam outlet (402) is connected to the outside of the movable port (202), thereby allowing steam to be discharged from the inside of the steam valve end cover (2); Step 6: After the steam inside the rice cooker is discharged, the lifting plate (5) descends, the one-way sealing plate (502) closes through the rotating spring shaft (503), and the folding arm (3) is pressed down into the notch (201) to seal the steam valve base (1) and the steam valve base (1) and perform automatic adjustment.

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