Anti-explosion pressure limiting valve, pressure cooker cover and pressure cooker

Abstract

The utility model provides an anti-explosion pressure-limiting valve, a pressure cooker cover and a pressure cooker, and the anti-explosion pressure-limiting valve comprises a valve body which is provided with an exhaust hole; the exhaust pipe is arranged on the valve body in a penetrating mode and can slide along the valve body so as to open or partially close or completely close the exhaust hole. One part of the valve element is arranged between the valve body and the exhaust pipe in a sleeved mode, and the valve element can slide along the exhaust pipe so as to open or close the exhaust pipe. The pressure range in the pressure cooker can be controlled, and risks such as explosion of the pressure cooker can be effectively prevented.

Description

Technical Field

[0001] This application relates to the technical field of kitchen utensils, and particularly relates to an explosion-proof pressure-limiting valve, a pressure cooker lid, and a pressure cooker. Background Art

[0002] A pressure cooker is a common cooking utensil, and its main function is to increase the heating temperature by increasing the air pressure inside the pot, thereby improving the heating speed. A pressure cooker mainly consists of a pressure cooker lid and a pot body. The pressure cooker lid is usually provided with a pressure-limiting valve to control the pressure inside the pot within a safe range.

[0003] In the prior art, the pressure-limiting valve is prone to blockage and failure, resulting in the pressure inside the pot exceeding the safe range, and it is easy to have dangers such as the explosion of the pressure cooker. Utility Model Content

[0004] This application provides an explosion-proof pressure-limiting valve, a pressure cooker lid, and a pressure cooker to control the pressure range inside the pot and effectively prevent dangers such as the explosion of the pressure cooker.

[0005] In the first aspect of this application, an explosion-proof pressure-limiting valve is provided, which includes:

[0006] A valve body, the valve body is provided with an exhaust hole;

[0007] An exhaust pipe, passing through the valve body and capable of sliding along the valve body to open or partially close or completely close the exhaust hole;

[0008] A valve core, a part of the valve core is sleeved between the valve body and the exhaust pipe, and the valve core can slide along the exhaust pipe to open or close the exhaust pipe.

[0009] The explosion-proof pressure-limiting valve provided by the embodiment of this application includes a valve body, an exhaust pipe, and a valve core; the exhaust pipe passes through the valve body, thereby forming an exhaust channel communicating the inside and outside of the cover body; a part of the valve core is sleeved between the valve body and the exhaust pipe, and the valve core can slide along the exhaust pipe to open or close the exhaust channel; the valve body is provided with an exhaust hole, and the exhaust pipe can slide up and down along the valve body to open or partially close or completely close the exhaust hole. Under normal circumstances, the pressure inside the pot is controlled through the exhaust channel in the exhaust pipe. The exhaust pipe closes the exhaust hole to prevent the gas inside the pot from leaking along the exhaust hole, ensuring that the pressure cooker can form the expected high-pressure state and meet the requirements of high-pressure cooking; when an accident such as blockage occurs in the exhaust pipe, resulting in the exhaust pipe being unable to be opened normally, the pressure inside the pot rises rapidly, and the pressure received by the exhaust pipe is too large and it slides upward along the valve body, causing the exhaust hole to open, and the gas inside the pot is discharged along the exhaust hole, thereby controlling the pressure range inside the pot, effectively preventing dangers such as the explosion of the pressure cooker, and improving the safety of using the pressure cooker.

[0010] Optionally, a valve plate is detachably connected to the outer periphery of the exhaust pipe. The valve plate is relatively fixed to the exhaust pipe and forms a sliding fit with the valve body. This can not only increase the support span of the exhaust pipe, thereby enhancing the stability of the installation and placement of the exhaust pipe, preventing the exhaust pipe from shaking under the impact of gas and causing gas leakage along the gap between the exhaust pipe and the valve body, but also increase the pressure on the exhaust pipe to ensure that the exhaust pipe can open the exhaust hole when the pressure in the pot is too high. In addition, since the valve plate is detachably connected to the exhaust pipe, the local cross-section of the exhaust pipe can be increased without changing the basic structure of the exhaust pipe. That is to say, by simply replacing the valve plate with an appropriate diameter, the exhaust pipe can be adapted to valve bodies of different models, improving the applicable range of the exhaust pipe.

[0011] Optionally, an annular flange is provided on the outer periphery of the exhaust pipe. The annular flange overlaps above the valve plate, and a first sealing ring is provided on the side of the annular flange facing the valve plate. The first sealing ring elastically abuts against the valve plate. An end face seal is formed between the annular flange and the valve plate, and the extrusion direction of the first sealing ring is parallel to the force direction of the valve plate, thereby preventing the first sealing ring from sliding along the valve plate and wearing, and ensuring the reliability of the sealing fit between the exhaust pipe and the valve plate.

[0012] Optionally, an annular groove is provided on the side of the annular flange facing the valve plate, and the first sealing ring is installed in the annular groove; the first sealing ring elastically abuts against the upper surface of the valve plate, and the annular flange rigidly abuts against the upper surface of the valve plate. On the one hand, it positions the first sealing ring to prevent the position of the first sealing ring from changing and affecting the reliability of the sealing fit between the exhaust pipe and the valve plate; on the other hand, the annular flange rigidly abuts against the upper surface of the valve plate, which can prevent the relative axial movement between the exhaust pipe and the valve plate during use, resulting in a change in the compression state of the first sealing ring.

[0013] Optionally, a second sealing ring is sleeved on the outer periphery of the valve plate, and the second sealing ring elastically abuts against the inner wall of the valve body. Even if the valve plate has a certain axial movement under the impact of gas or the like, the sealing state between the valve plate and the valve body can be ensured to remain unchanged, effectively preventing gas leakage along the gap between the valve plate and the valve body during normal use and meeting the requirements of high-pressure cooking.

[0014] Optionally, an anti-blocking cover is installed at the bottom of the exhaust pipe, and the anti-blocking cover is relatively fixed to the exhaust pipe. The gas in the pot needs to pass through the anti-blocking cover first before it can enter the exhaust pipe, preventing large-particle food from entering the exhaust pipe, thereby reducing the risk of blockage of the exhaust pipe and improving the safety of using the pressure cooker. In addition, when the exhaust pipe moves and opens the exhaust hole, the exhaust hole is located outside the anti-blocking cover, and the gas in the pot can directly enter the exhaust hole for discharge without passing through the anti-blocking cover, thereby reducing the resistance of gas discharge, enabling the gas in the pot to be quickly discharged, and avoiding dangers such as explosion of the pressure cooker.

[0015] Optionally, the explosion-proof pressure-limiting valve further includes an elastic member, which is installed inside the valve body, and the lower end of the elastic member elastically abuts against the exhaust pipe to force the exhaust pipe to close the exhaust hole. This prevents the exhaust hole from accidentally opening during use, resulting in difficulty in generating the expected high-pressure state inside the pot and affecting the normal cooking of food.

[0016] Optionally, the explosion-proof pressure-limiting valve further includes a valve cover, which is detachably connected to the valve body, and the upper end of the elastic member elastically abuts against the valve cover. This facilitates the disassembly and cleaning of components such as the exhaust pipe inside the valve body, reducing the possibility of blockage of the exhaust pipe.

[0017] Optionally, the valve cover is configured as an annular structure surrounding the valve core, thereby forming an annular exhaust gap between the valve cover and the valve core. That is to say, after the gas in the pot passes through the exhaust pipe, it is discharged along the exhaust gap to increase the exhaust area and reduce the flow rate of the gas discharged to the external atmosphere, thereby preventing the gas from spraying out and scalding the user.

[0018] The second aspect of the present application provides a pressure cooker lid, which includes a lid body and any one of the explosion-proof pressure-limiting valves provided by the present application. The explosion-proof pressure-limiting valve penetrates through the lid body and is hermetically fitted with the lid body, so that the gas in the pot can be discharged to the outside of the pot through the explosion-proof pressure-limiting valve. Under normal circumstances, the pressure inside the pot is controlled through the exhaust passage in the exhaust pipe, and the exhaust pipe closes the exhaust hole to prevent the gas in the pot from leaking along the exhaust hole, ensuring that the pressure cooker can form the expected high-pressure state and meet the requirements of high-pressure cooking; when an accident such as blockage occurs in the exhaust pipe, resulting in the inability of the exhaust pipe to open normally, the pressure inside the pot rises rapidly, and the exhaust pipe slides upward along the valve body under excessive pressure, opening the exhaust hole, and the gas in the pot is discharged along the exhaust hole, thereby controlling the pressure range inside the pot, effectively preventing dangers such as explosion of the pressure cooker, and improving the safety of using the pressure cooker.

[0019] The third aspect of the present application provides a pressure cooker, which includes a pot body and any one of the pressure cooker lids provided in the present application, wherein the pressure cooker lid is movably connected to the pot body and can be sealed with the pot body. Under normal circumstances, the pressure in the pot is controlled by the exhaust channel in the exhaust pipe, and the exhaust pipe closes the exhaust hole to prevent the gas in the pot from leaking along the exhaust hole, ensuring that the pressure cooker can form the expected high-pressure state and meet the requirements of high-pressure cooking; when the exhaust pipe is blocked or other accidents occur, resulting in the exhaust pipe being unable to open normally, the pressure in the pot rises rapidly, the exhaust pipe is subjected to excessive pressure and slides upward along the valve body, so that the exhaust hole is opened, and the gas in the pot is discharged along the exhaust hole, thereby controlling the pressure range in the pot, effectively preventing the pressure cooker from exploding and other dangers, and improving the safety of the pressure cooker.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a pressure cooker lid provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of the explosion-proof pressure-limiting valve in a closed exhaust port state provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of the explosion-proof pressure-limiting valve in an open state of the exhaust port provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of the exhaust pipe provided in an embodiment of the present application.

[0025] Reference numerals:

[0026] 10- Explosion-proof pressure limiting valve;

[0027] 20-cover body;

[0028] 1- Valve body;

[0029] 11- Exhaust hole;

[0030] 2- Exhaust pipe;

[0031] 21- annular flange;

[0032] 211- annular groove;

[0033] 22-valve plate;

[0034] 221-annular slot;

[0035] 23- first sealing ring;

[0036] 24- second sealing ring;

[0037] 25 - Anti - blockage cover;

[0038] 3 - Spool valve;

[0039] 4 - Elastic member;

[0040] 5 - Valve cover;

[0041] 6 - Exhaust gap.

[0042] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0044] In the description of the present application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of the present application are described from the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0046] As Figures 1-4 shown, the embodiment of the present application provides a pressure cooker lid, which includes a lid body 20 and an explosion - proof pressure - limiting valve 10. The lid body 20 is provided with an installation hole, and at least a part of the explosion - proof pressure - limiting valve 10 passes through the installation hole and extends into the inner side of the lid body 20, so that the gas in the pot can be discharged to the outside of the pot through the explosion - proof pressure - limiting valve 10. The explosion - proof pressure - limiting valve 10 and the lid body 20 are in sealing cooperation to prevent gas from leaking along the installation hole.

[0047] The explosion-proof pressure-limiting valve 10 provided by the embodiment of the present application includes a valve body 1, an exhaust pipe 2, and a valve core 3. The valve body 1 is used to connect to the cover body 20 to achieve the installation and fixation of the explosion-proof pressure-limiting valve 10. For example, the valve body 1 can be detachably connected to the cover body 20 by nuts, buckles, etc., or the valve body 1 can be non-detachably connected to the cover body 20 by welding or integral molding; the exhaust pipe 2 passes through the valve body 1 to form an exhaust channel communicating the inside and outside of the cover body 20; the valve core 3 is sleeved on the exhaust pipe 2 and can slide up and down along the exhaust pipe 2 to open or close the exhaust channel, thereby limiting the pressure inside the pot. Specifically, when the valve core 3 opens the exhaust channel, the gas inside the pot can be discharged outside the pot to prevent the pressure inside the pot from being too high; when the valve core 3 closes the exhaust channel, a desired high-pressure state can be formed inside the pot to meet the requirements of high-pressure cooking.

[0048] Further, a part of the valve core 3 is sleeved between the valve body 1 and the exhaust pipe 2. For example, the valve body 1 is arranged as an annular columnar structure surrounding the valve core 3, and the exhaust pipe 2 and the valve body 1 respectively form radial limits on the inner and outer sides of the valve core 3 to prevent the valve core 3 from swinging too much, resulting in situations where the valve core 3 cannot automatically reset, such as falling off, and ensuring that the valve core 3 can close the exhaust pipe 2 to meet the requirements of high-pressure cooking.

[0049] Further, the side wall of the valve body 1 is provided with an exhaust hole 11, and the exhaust pipe 2 can slide up and down along the valve body 1 to open or partially close or completely close the exhaust hole 11. Under normal circumstances (refer to Figure 2 ), the exhaust pipe 2 closes the exhaust hole 11 to prevent the gas inside the pot from leaking along the exhaust hole 11, ensuring that the pressure cooker can form a desired high-pressure state to meet the requirements of high-pressure cooking; when an accident such as blockage occurs in the exhaust pipe 2 (refer to Figure 3 ), resulting in the exhaust pipe 2 being unable to open normally, the pressure inside the pot rises rapidly, and the exhaust pipe 2 slides upward along the valve body 1 due to excessive pressure, opening the exhaust hole 11, and the gas inside the pot is discharged along the exhaust hole 11, thereby controlling the pressure range inside the pot, effectively preventing dangerous situations such as explosion of the pressure cooker, and improving the safety of using the pressure cooker.

[0050] In addition, by controlling the opening degree of the exhaust hole 11, the discharge speed of the gas inside the pot can be adjusted, thereby adjusting and maintaining the pressure inside the pot, which can not only ensure the safety of using the pressure cooker but also enable the pressure cooker to achieve the desired high-pressure cooking effect. Specifically, when the exhaust hole 11 is completely opened, the gas inside the pot is quickly discharged, and the air pressure inside the pot drops rapidly, preventing dangerous situations such as explosion of the pressure cooker; when the air pressure inside the pot drops by a certain amount, the exhaust hole 11 is partially closed, and the gas inside the pot is slowly discharged, enabling the pot to maintain a certain high pressure, thereby maintaining high-pressure cooking; when the air pressure inside the pot is too low, the exhaust hole 11 is completely closed, and the gas inside the pot cannot be discharged, forming a high pressure inside the pot, thereby achieving high-pressure cooking.

[0051] Further, a valve plate 22 is detachably connected to the outer periphery of the exhaust pipe 2. The valve plate 22 is relatively fixed to the exhaust pipe 2 (i.e., the valve plate 22 moves or stops synchronously with the exhaust pipe 2), and the valve plate 22 forms a sliding fit with the valve body 1. This can not only increase the support span of the exhaust pipe 2, thereby increasing the stability of the installation and placement of the exhaust pipe 2, preventing the exhaust pipe 2 from shaking under the action of gas impact, resulting in gas leakage along the gap between the exhaust pipe 2 and the valve body 1, but also increase the pressure on the exhaust pipe 2 to ensure that the exhaust pipe 2 can open the exhaust hole 11 when the pressure in the pot is too high. In addition, the valve plate 22 is detachably connected to the exhaust pipe 2, and the local cross-section of the exhaust pipe 2 can be increased without changing the basic structure of the exhaust pipe 2. That is to say, by simply replacing the valve plate 22 with an appropriate diameter, the exhaust pipe 2 can be adapted to valve bodies 1 of different models, improving the applicable range of the exhaust pipe 2. It can be understood that in other embodiments, the valve plate 22 can also be formed on the outer periphery of the exhaust pipe 2 by means such as welding or integral molding, as long as the local cross-section of the exhaust pipe 2 can be increased.

[0052] Specifically, the valve plate 22 and the exhaust pipe 2 can be detachably connected by means such as threads or snap fasteners. For example, external threads and internal threads that cooperate with each other are provided between the valve plate 22 and the exhaust pipe 2, and the valve plate 22 and the exhaust pipe 2 directly form a threaded fastening fit; or, the exhaust pipe 2 passes through the through hole of the valve plate 22 and forms a fastening fit with the exhaust pipe 2 through a nut.

[0053] Further, an annular flange 21 is provided on the outer periphery of the exhaust pipe 2. The annular flange 21 overlaps above the valve plate 22, thereby axially positioning the exhaust pipe 2 to prevent the exhaust pipe 2 from collapsing downward; a first sealing ring 23 is provided on the side of the annular flange 21 facing the valve plate 22. The first sealing ring 23 elastically abuts against the valve plate 22, thereby forming an end face seal between the annular flange 21 and the valve plate 22. The extrusion direction of the first sealing ring 23 is parallel to the force direction of the valve plate 22, thereby preventing the first sealing ring 23 from sliding along the valve plate 22 and causing wear, and ensuring the reliability of the sealing fit between the exhaust pipe 2 and the valve plate 22.

[0054] Further, an annular groove 211 is provided on the side of the annular flange 21 facing the valve plate 22. The first sealing ring 23 is installed in the annular groove 211, and the annular groove 211 positions the first sealing ring 23 to prevent the position of the first sealing ring 23 from changing and affecting the reliability of the sealing fit between the exhaust pipe 2 and the valve plate 22; the first sealing ring 23 elastically abuts against the upper surface of the valve plate 22 to ensure a reliable sealing fit between the first sealing ring 23 and the valve plate 22; the annular flange 21 rigidly abuts against the upper surface of the valve plate 22 to prevent the exhaust pipe 2 and the valve plate 22 from moving relative to each other axially during use, resulting in a change in the compression state of the first sealing ring 23. It can be understood that the exhaust pipe 2 and the valve plate 22 can also be mutually matched by a radial sealing method.

[0055] Further, a second sealing ring 24 is sleeved on the outer periphery of the valve plate 22. The second sealing ring 24 elastically abuts against the inner wall of the valve body 1, so as to form a radial seal between the valve plate 22 and the valve body 1. Even if the valve plate 22 generates a certain axial displacement under the impact of gas or the like, the sealing state between the valve plate 22 and the valve body 1 can be ensured to remain unchanged, effectively preventing gas from leaking along the gap between the valve plate 22 and the valve body 1 during normal use and meeting the requirements of high-pressure cooking.

[0056] Specifically, an annular clamping groove 221 may be provided on the outer periphery of the valve plate 22, and the second sealing ring 24 is installed in the annular clamping groove 221 to axially limit the second sealing ring 24 and prevent the second sealing ring 24 from sliding along the valve plate 22, resulting in a change in the sealing state between the valve plate 22 and the valve body 1.

[0057] Further, an anti-blocking cover 25 is installed at the bottom of the exhaust pipe 2. The anti-blocking cover 25 is relatively fixed to the exhaust pipe 2 (that is, the anti-blocking cover 25 moves or remains stationary synchronously with the exhaust pipe 2). For example, the anti-blocking cover 25 can be fixed to the bottom of the exhaust pipe 2 by means of threads or buckles. The gas in the pot needs to pass through the anti-blocking cover 25 before it can enter the exhaust pipe 2, preventing large-particle food from entering the exhaust pipe 2, thereby reducing the risk of blockage of the exhaust pipe 2 and improving the use safety of the pressure cooker. In addition, when the exhaust pipe 2 moves and opens the exhaust hole 11, the exhaust hole 11 is located outside the anti-blocking cover 25, and the gas in the pot does not need to pass through the anti-blocking cover 25 and can directly enter the exhaust hole 11 for discharge, thereby reducing the resistance of gas discharge, enabling the gas in the pot to be quickly discharged, and avoiding dangers such as explosion of the pressure cooker.

[0058] Further, the explosion-proof pressure-limiting valve 10 further includes an elastic member 4. The elastic member 4 is installed in the valve body 1, and the lower end of the elastic member 4 elastically abuts against the exhaust pipe 2 to force the exhaust pipe 2 to close the exhaust hole 11, thereby preventing the exhaust hole 11 from being accidentally opened during use, resulting in difficulty in generating the expected high-pressure state in the pot and affecting the normal cooking of food.

[0059] Further, the explosion-proof pressure-limiting valve 10 further includes a valve cover 5. The valve cover 5 is arranged at the top of the exhaust pipe 2, and the upper end of the elastic member 4 elastically abuts against the valve cover 5. That is to say, both ends of the elastic member 4 elastically abut against the valve body 1 and the exhaust pipe 2 respectively, and the valve cover 5 axially limits the exhaust pipe 2 to limit the maximum upward sliding stroke of the exhaust pipe 2 and prevent the exhaust pipe 2 from falling or being difficult to reset. The valve cover 5 is detachably connected to the valve body 1. For example, the valve cover 5 can be connected to the valve body 1 by means of buckles or threads to facilitate the disassembly and cleaning of components such as the exhaust pipe 2 inside the valve body 1 and reduce the possibility of blockage of the exhaust pipe 2.

[0060] Furthermore, the valve cover 5 is configured as an annular structure surrounding the valve core 3, so that an annular exhaust gap 6 is formed between the valve cover 5 and the valve core 3. That is to say, after the gas in the pot passes through the exhaust pipe 2, it is discharged along the exhaust gap 6 to increase the exhaust area and reduce the flow rate of the gas discharged to the external atmosphere, thereby preventing the gas from spraying out and scalding the user.

[0061] In addition, an embodiment of the present application further provides a pressure cooker, which includes a pot body and any one of the pressure cooker covers provided in the embodiments of the present application, wherein the pressure cooker cover is movably connected to the pot body and can be sealed with the pot body.

[0062] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof pressure-limiting valve, characterized in that, Comprising: A valve body (1), the valve body (1) being provided with an exhaust hole (11); An exhaust pipe (2), passing through the valve body (1) and capable of sliding along the valve body (1) to open or partially close or fully close the exhaust hole (11); A valve core (3), a part of the valve core (3) being sleeved between the valve body (1) and the exhaust pipe (2), the valve core (3) being capable of sliding along the exhaust pipe (2) to open or close the exhaust pipe (2).

2. The explosion-proof pressure-limiting valve according to claim 1, characterized in that A valve plate (22) is detachably connected to the outer periphery of the exhaust pipe (2), the valve plate (22) being relatively fixed to the exhaust pipe (2), and the valve plate (22) forming a sliding fit with the valve body (1).

3. The explosion-proof pressure-limiting valve according to claim 2, wherein, An annular flange (21) is provided on the outer periphery of the exhaust pipe (2), the annular flange (21) overlapping above the valve plate (22), and a first sealing ring (23) is provided on one side of the annular flange (21) facing the valve plate (22), the first sealing ring (23) elastically abutting against the valve plate (22).

4. The explosion-proof pressure-limiting valve according to claim 3, wherein, An annular groove (211) is provided on one side of the annular flange (21) facing the valve plate (22), and the first sealing ring (23) is installed in the annular groove (211); The first sealing ring (23) elastically abuts against the upper surface of the valve plate (22), and the annular flange (21) rigidly abuts against the upper surface of the valve plate (22).

5. The explosion-proof pressure-limiting valve according to claim 2, characterized in that, A second sealing ring (24) is sleeved on the outer periphery of the valve plate (22), and the second sealing ring (24) elastically abuts against the inner wall of the valve body (1).

6. The explosion-proof pressure-limiting valve according to claim 1, wherein, An anti-blocking cover (25) is installed at the bottom of the exhaust pipe (2), and the anti-blocking cover (25) is relatively fixed to the exhaust pipe (2).

7. The explosion-proof pressure-limiting valve according to any one of claims 1-6, characterized in that, The explosion-proof pressure-limiting valve further comprises an elastic member (4), the elastic member (4) being installed in the valve body (1), and the lower end of the elastic member (4) elastically abutting against the exhaust pipe (2) to force the exhaust pipe (2) to close or partially close the exhaust hole (11).

8. The explosion-proof pressure-limiting valve according to claim 7, characterized in that, The explosion-proof pressure-limiting valve further comprises a valve cover (5), the valve cover (5) being detachably connected to the valve body (1), and the upper end of the elastic member (4) elastically abutting against the valve cover (5).

9. The explosion-proof pressure-limiting valve according to claim 8, characterized in that, The valve cover (5) is arranged as an annular structure surrounding the valve core (3).

10. A pressure cooker lid, characterized in that, Comprising a cover body and the explosion-proof pressure-limiting valve according to any one of claims 1-9, the explosion-proof pressure-limiting valve passing through the cover body and being in sealing cooperation with the cover body.

11. A pressure cooker, characterized in that, Comprising a pot body and the pressure cooker lid according to claim 10, the pressure cooker lid being movably connected to the pot body and capable of achieving sealing cooperation with the pot body.

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