Pressure regulating valve and pressure cooker

Abstract

The utility model relates to a pressure regulating valve and a pressure cooker, the pressure regulating valve comprises a valve body, the valve body is provided with a valve cavity, the bottom of the side wall of the valve body is provided with an exhaust port, and the exhaust port is communicated with the valve cavity and the outside; the breather pipe is fixedly installed on the bottom wall of the valve body and used for being communicated with the interior of a cooker body of the pressure cooker; the valve block is mounted in the valve cavity, and the valve block is provided with an abutting part; the movable pipe is movably connected to the breather pipe and communicates with the breather pipe and the valve cavity; the movable pipe is used for moving upwards in the axial direction of the valve body and is in sealing fit with the abutting part so as to cut off communication between the ventilation pipe and the valve cavity. The movable pipe is further used for moving downwards in the axial direction of the valve body and being far away from the abutting part so that the ventilation pipe can communicate with the valve cavity. And the pressure regulating valve can discharge air downwards, so that high-temperature steam is prevented from splashing upwards to scald a user.

Description

Technical Field

[0001] This application relates to the field of household kitchen appliances, and more particularly to a pressure regulating valve and a pressure cooker. Background Technology

[0002] Pressure cookers typically have a pressure regulating valve on the lid. When the pressure inside the cooker rises to a certain level, the pressure can be released by venting air through the valve. Most existing pressure regulating valves have a top-venting design, which is prone to splashing and poses a significant safety hazard. Utility Model Content

[0003] This application provides a pressure cooker lid and a pressure cooker, which can solve the problem of splashing when venting pressure regulating valves in the prior art.

[0004] This application provides a pressure regulating valve, including a valve body having a valve cavity, a vent being provided at the bottom of the side wall of the valve body, the vent being communicating with the valve cavity and the outside; a vent pipe fixedly installed on the bottom wall of the valve body, the vent pipe being used to communicate with the interior of a pressure cooker; a valve block installed in the valve cavity, the valve block being provided with an abutment portion; and a movable pipe movably connected to the vent pipe, the movable pipe communicating with the vent pipe and the valve cavity; wherein, the movable pipe is used to move upward along the axial direction of the valve body and to seal with the abutment portion to cut off the communication between the vent pipe and the valve cavity; the movable pipe is also used to move downward along the axial direction of the valve body and away from the abutment portion to make the vent pipe communicate with the valve cavity.

[0005] In the above scheme, when the movable tube moves upward along the axial direction of the valve body and abuts against the contact part, the movable tube and the contact part can form a sealing fit. At this time, the movable tube can cut off the connection between the vent pipe and the valve cavity, so that the pressure regulating valve is in a sealed state and does not exhaust gas. When the movable tube moves downward along the axial direction of the valve body and moves away from the contact part, a gap is formed between the movable tube and the contact part, so that the vent pipe can connect with the valve cavity through the movable tube. At this time, the pressure regulating valve is in the exhaust state, and the gas in the pot can flow to the outside through the vent pipe, the movable tube, the valve cavity, and the exhaust port to achieve the pressure relief function. In the pressure regulating valve provided in this application, the exhaust port is located at the bottom of the side wall of the valve body, so that the pressure regulating valve can exhaust gas downward, thereby avoiding high-temperature steam splashing upward and scalding the user. Moreover, when the gas flows along the path of the vent pipe, the movable tube, the valve cavity, and the exhaust port, it can also slow down the gas flow speed, reduce the risk of gas splashing, and improve the safety of the pressure regulating valve and the user's experience.

[0006] In one possible design, the top end of the movable tube is provided with an extension for engaging with the abutment portion; a first sealing ring is installed at the end of the extension facing the abutment portion.

[0007] In the above solution, when the extension part and the abutting part abut together, the first sealing ring can be clamped by the extension part and the abutting part, thereby improving the sealing effect between the extension part and the abutting part.

[0008] In one possible design, along the axial direction of the valve body, the valve block is provided with a receiving groove on the side facing the movable tube, and the abutment portion is located in the receiving groove; at least a portion of the movable tube extends into the receiving groove.

[0009] In the above scheme, when the pressure regulating valve is in the state of venting and depressurizing, the gas in the vent pipe can flow upward into the receiving tank through the movable pipe, and after impacting the side wall or top wall of the receiving tank, it flows downward into the valve chamber. Therefore, the receiving tank can guide the flow of gas, realize directional venting, and further slow down the flow speed of gas, thereby reducing the risk of gas splashing outward.

[0010] In one possible design, the pressure regulating valve further includes a first spring, which is sleeved on the movable tube along the axial direction of the valve body. The two ends of the first spring abut against the movable tube and the bottom wall of the valve body, respectively. When the gas pressure in the vent pipe is less than the preload of the first spring, the movable tube moves upward along the axial direction of the valve body under the action of the first spring and seals with the abutment portion. When the gas pressure in the vent pipe is greater than the preload of the first spring, the movable tube moves downward along the axial direction of the valve body and away from the abutment portion under the action of the gas pressure in the vent pipe.

[0011] In the above scheme, when the gas pressure in the vent pipe is less than the preload of the first spring, the movable pipe moves upward along the axial direction of the valve body under the support of the first spring and seals with the abutment. At this time, the first spring can apply pressure to the movable pipe, which helps to improve the sealing effect between the movable pipe and the abutment. When the gas pressure in the vent pipe is greater than the preload of the first spring, since the valve block is fixed, the gas pressure can cause the movable pipe to move downward along the axial direction of the valve body and away from the abutment, thereby forming a gap between the movable pipe and the abutment, realizing the automatic pressure relief and exhaust of the pressure regulating valve.

[0012] In one possible design, the sidewall of the valve body is provided with multiple limiting grooves of different heights along the axial direction of the valve body; the valve block is provided with an adjusting rod that extends radially along the valve body, and the adjusting rod is used to limit and cooperate with the multiple limiting grooves respectively to adjust the preload of the first spring.

[0013] In the above scheme, the adjusting rod is used to limit the movement of multiple limiting grooves, thereby adjusting the height of the valve block in the axial direction of the valve body. When the height of the valve block is different, the pressure applied by the valve block to the movable tube is also different, and the compression degree of the first spring is also different. Therefore, by adjusting the adjusting rod and different limiting grooves for limiting the movement, the preload of the first spring can be adjusted, thereby realizing the pressure regulating function of the pressure regulating valve.

[0014] In one possible design, the side wall of the valve body is provided with a through hole, which extends obliquely in the circumferential direction of the valve body; the through hole has a lower wall surface, and a plurality of limiting grooves are spaced apart on the lower wall surface along the extension direction of the through hole; the adjusting rod is slidably connected to the through hole, and the adjusting rod can be respectively limited and engaged with the plurality of limiting grooves during the sliding process along the through hole.

[0015] In the above scheme, the adjusting rod is slidably connected to the through hole. The user can push the adjusting rod to slide along the through hole, so that the adjusting rod can be matched with different limiting grooves to adjust the height of the valve cover, thereby changing the preload of the spring and making it convenient for the user.

[0016] In one possible design, the pressure regulating valve further includes a knob sleeved on the valve body, the knob having a mounting groove; along the radial direction of the valve body, the end of the adjusting rod away from the valve block is fixed in the mounting groove; the knob is used to drive the adjusting rod to slide along the through hole.

[0017] In the above scheme, the mounting groove can limit the adjustment rod in the circumferential direction of the valve body. Simply turning the knob can drive the adjustment rod to slide along the through hole, so that the adjustment rod can be matched with the limiting grooves at different heights. Therefore, the user can adjust the preload of the first spring by turning the knob, thereby realizing the pressure regulating function of the pressure regulating valve, making the operation more convenient.

[0018] In one possible design, the sidewall of the valve body is provided with a platform portion extending radially outward along the valve body, the platform portion being arranged circumferentially around the valve body; along the circumference of the valve body, the platform portion is provided with a plurality of spaced grooves; the pressure regulating valve further includes a positioning component, the positioning component being installed inside the knob, the positioning component being used to limit the engagement with the plurality of grooves respectively during the sliding of the adjusting rod and the through hole.

[0019] In the above design, the bottom wall of the knob overlaps with the platform, which provides support for the knob, thereby improving its installation and rotation stability. When the adjusting rod engages with the limiting groove, the positioning component also engages with the corresponding groove, indicating the current pressure setting of the regulating valve and enhancing the user experience.

[0020] In one possible design, the positioning assembly includes a fixing member, a positioning bolt, and a second spring. The fixing member is fixedly connected to the knob, and the positioning bolt is elastically connected to the fixing member via the second spring. The positioning bolt is used to limit the engagement with the plurality of grooves respectively.

[0021] In the above scheme, the structure of the positioning component is relatively simple. The positioning bolt can be matched with multiple grooves for limiting under the action of the fixing part and the second spring, or can be disengaged from the grooves, so as to facilitate the positioning effect of the positioning component.

[0022] A second aspect of this application provides a pressure cooker, comprising: a pot body; a pot lid, the pot lid being fastened to the pot body, the pot lid including a cover body and the pressure regulating valve described above, the pressure regulating valve being installed on the cover body.

[0023] In the above design, when the lid is closed onto the pot body, the vent pipe can connect to the inside of the pot body, enabling the pressure regulating valve to release pressure and vent air from the pressure cooker. This pressure regulating valve achieves a downward venting effect, thereby improving the safety of the pressure cooker's venting process.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural diagram of the pressure regulating valve provided in this application in the state without venting.

[0026] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the pressure regulating valve in the exhaust state;

[0027] Figure 3 for Figure 1 A structural diagram of part of the pressure regulating valve in the diagram;

[0028] Figure 4 for Figure 1 A top view of the pressure regulating valve in the middle;

[0029] Figure 5 for Figure 1 A cross-sectional view of the pressure regulating valve in another perspective.

[0030] Figure label:

[0031] 1-Valve body;

[0032] 10 - Valve chamber;

[0033] 11 - Exhaust port;

[0034] 12-Limiting groove;

[0035] 121 - First limiting groove;

[0036] 122 - Second limiting groove;

[0037] 123 - Third limiting groove;

[0038] 13-Through hole;

[0039] 131-lower wall;

[0040] 14-Platform Department;

[0041] 141 - Groove;

[0042] 141a - First groove;

[0043] 141b - Second groove;

[0044] 141c - Third groove;

[0045] 142 - Transition groove;

[0046] 2-Ventilation tube;

[0047] 21 - Second sealing ring;

[0048] 3-Valve block;

[0049] 31-butt part;

[0050] 32-Receiving groove;

[0051] 33 - Adjusting rod;

[0052] 34 - Third sealing ring;

[0053] 35 - Limiting block;

[0054] 4-Active tube;

[0055] 41-Extension;

[0056] 42 - First sealing ring;

[0057] 5-First spring;

[0058] 6- Knob;

[0059] 61 - Mounting slot;

[0060] 7-Positioning components;

[0061] 71-Factor;

[0062] 72-Positioning bolt;

[0063] 73 - Second spring;

[0064] 8-Valve cover.

[0065] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0066] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0067] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0068] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0069] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0070] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when referring to an element being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element.

[0071] This application provides a pressure regulating valve, such as Figure 1As shown, the pressure regulating valve includes a valve body 1 and a valve cover 8 fixed to the top of the valve body 1. The valve body 1 has a valve cavity 10, and the valve cover 8 is used to close the valve cavity 10. An exhaust port 11 is provided at the bottom of the side wall of the valve body 1, which connects the valve cavity 10 to the outside. A vent pipe 2 is fixedly installed on the bottom wall of the valve body 1, and the vent pipe 2 can also be integrally injection molded with the valve body 1. Along the axial direction Z of the valve body 1, the lower end of the vent pipe 2 is located outside the valve cavity 10 and is used to extend into the interior of the pressure cooker, while the upper end of the vent pipe 2 is located inside the valve cavity 10 and communicates with it. That is, the vent pipe 2 can connect the interior of the pressure cooker's interior with the valve cavity 10. The pressure regulating valve also includes a valve block 3 and a movable tube 4 installed in the valve cavity 10. The valve block 3 is provided with an abutment portion 31, which has a planar structure. The movable tube 4 is sleeved on the upper end of the vent tube 2. The two ends of the movable tube 4 along the axial direction Z of the valve body 1 are connected to the vent tube 2 and the valve cavity 10 respectively. The movable tube 4 can move up and down relative to the vent tube 2 along the axial direction Z of the valve body 1.

[0072] like Figure 1 As shown, when the movable pipe 4 moves upward along the axial direction Z of the valve body 1 and abuts against the contact part 31, the movable pipe 4 and the contact part 31 can form a sealing fit. At this time, the movable pipe 4 can cut off the connection between the vent pipe 2 and the valve chamber 10, so that the pressure regulating valve is in a sealed state and does not exhaust gas. Figure 2 As shown, when the movable pipe 4 moves downward along the axial direction Z of the valve body 1 and moves away from the abutment part 31, a gap is formed between the movable pipe 4 and the abutment part 31, so that the vent pipe 2 can be connected to the valve cavity 10 through the movable pipe 4. At this time, the pressure regulating valve is in the exhaust state, and the gas in the pot can flow to the outside through the vent pipe 2, the movable pipe 4, the valve cavity 10 and the exhaust port 11 to achieve the pressure relief function.

[0073] In the pressure regulating valve provided in this application embodiment, the exhaust port 11 is located at the bottom of the side wall of the valve body 1, so that the pressure regulating valve can exhaust downward, thereby avoiding high temperature steam from splashing upward and scalding the user. Moreover, when the gas flows along the path of the vent pipe 2, the movable pipe 4, the valve chamber 10 and the exhaust port 11, the gas flow speed can be slowed down, reducing the risk of gas splashing, which is beneficial to improving the safety of the pressure regulating valve and the user's experience.

[0074] like Figure 1 As shown, the top end of the movable tube 4 is provided with an extension 41, which is used to abut against the abutment 31. A first sealing ring 42 is fixedly installed on one end of the extension 41 facing the abutment 31. When the extension 41 abuts against the abutment 31, the first sealing ring 42 can be clamped by the extension 41 and the abutment 31, thereby improving the sealing effect between the extension 41 and the abutment 31.

[0075] like Figure 1As shown, a second sealing ring 21 is fixedly installed on the side wall of the vent pipe 2. Along the radial direction X of the valve body 1, the second sealing ring 21 abuts against the inner wall of the movable pipe 4 and the outer wall of the vent pipe 2, which can improve the sealing between the movable pipe 4 and the vent pipe 2, thereby preventing the gas in the vent pipe 2 from flowing downward into the valve cavity 10 from the gap between the vent pipe 2 and the air inlet pipe 4 when the pressure regulating valve is in the unvented state.

[0076] like Figure 1 As shown, a third sealing ring 34 is fixedly installed on the side wall of the valve block 3. Along the radial direction X of the valve body 1, the third sealing ring 34 abuts against the inner side wall of the valve body 1 and the outer side wall of the valve block 3 respectively, so as to form a sealing fit between the valve body 1 and the valve block 3, preventing the gas in the valve cavity 10 from flowing upward along the gap between the valve body 1 and the valve block 3, and ensuring that the pressure regulating valve can exhaust gas in a directional manner to the exhaust port 11.

[0077] like Figure 1 As shown, along the axial direction Z of the valve body 1, the valve block 3 is provided with a receiving groove 32 on the side facing the movable tube 4. The abutment part 31 is located in the receiving groove 32. Specifically, the abutment part 31 can be the top wall of the receiving groove 32. At least a portion of the movable tube 4 extends into the receiving groove 32. When the pressure regulating valve is in the venting and depressurization state, the gas in the vent pipe 2 can flow upward into the receiving groove 32 through the movable tube 4. After impacting the side wall or top wall of the receiving groove 32, it flows downward into the valve cavity 10. Therefore, the receiving groove 32 can guide the flow of gas, realize directional venting, and further slow down the flow speed of the gas, thereby reducing the risk of gas splashing outward.

[0078] like Figure 1 As shown, the pressure regulating valve also includes a first spring 5, which is located in the valve cavity 10 and sleeved on the movable tube 4. Along the axial direction Z of the valve body 1, the two ends of the first spring 5 abut against the extension 41 of the movable tube 4 and the bottom wall of the valve body 1, respectively. When the gas pressure in the vent pipe 2 is less than the preload of the first spring 5, the movable tube 4 moves upward along the axial direction Z of the valve body 1 under the support of the first spring 5, causing the extension 41 to seal against the abutment 31. At this time, the first spring 5 can apply pressure to the movable tube 4, which helps to improve the sealing effect between the extension 41 and the abutment 31. Figure 2 As shown, when the gas pressure in the vent pipe 2 is greater than the preload of the first spring 5, since the valve block 3 is fixed, the gas pressure causes the movable pipe 4 to move downward along the axial direction Z of the valve body 1 and move the extension 41 away from the abutment 31, thereby creating a gap between the extension 41 and the abutment 31, realizing the automatic pressure relief and exhaust of the pressure regulating valve. When the gas in the pot is gradually discharged, causing the gas pressure in the vent pipe 2 to gradually decrease, the movable pipe 4 can move upward along the axial direction Z of the valve body 1 under the action of the restoring force of the first spring 5 to reset, so that the extension 41 and the abutment 31 can re-seal and cooperate.

[0079] like Figure 1 and Figure 3 As shown, along the axial direction Z of the valve body 1, multiple limiting grooves 12 of different heights are provided on the side wall of the valve body 1. The valve block 3 is provided with an adjusting rod 33, which extends outward along the radial direction X of the valve body 1 to engage with the multiple limiting grooves 12 for limiting and adjusting the height position of the valve block 3 along the axial direction Z of the valve body 1. When the height position of the valve block 3 is different, the pressure applied by the valve block 3 to the movable tube 4 is also different, and the compression degree of the first spring 5 is also different. Therefore, by using the adjusting rod 33 and different limiting grooves 12 for limiting and adjusting, the preload of the first spring 5 can be adjusted, thereby realizing the pressure regulating function of the pressure regulating valve. When the position of the valve block 3 is higher and the preload of the first spring 5 is smaller, the pressure relief valve can start to discharge gas when the gas pressure in the pot is low. When the position of the valve block 3 is lower and the preload of the first spring 5 is larger, the pressure relief valve will only start to discharge gas when the gas pressure in the pot is higher, thus realizing the pressure regulating function of the pressure regulating valve.

[0080] Specifically, such as Figure 3 As shown, a through hole 13 is provided on the side wall of the valve body 1. The through hole 13 extends obliquely in the circumferential direction of the valve body 1. The through hole 13 has a lower wall surface 131. Along the extending direction of the through hole 13, multiple limiting grooves 12 are spaced apart on the lower wall surface 131. At least a portion of the adjusting rod 33 extends out of the valve cavity 10 along the through hole 13. The adjusting rod 33 is slidably connected to the through hole 13. The user can push the adjusting rod 33 to slide along the through hole 13, so that the adjusting rod 33 is respectively limited and engaged with different limiting grooves 12 to adjust the height of the valve block 3, thereby changing the preload of the first spring 5. The structure is simple and easy to operate, making it convenient for users. The lower wall surface 131 can be a smooth arc surface structure, which makes it easier for the adjusting rod 33 to slide along the through hole 13. This embodiment does not limit the specific number of limiting grooves 12.

[0081] Specifically, such as Figure 1 As shown, the valve block 3 includes two adjusting rods 33, which are symmetrically distributed along the radial direction X of the valve body 1. This arrangement helps improve the installation stability of the valve block 3 and prevents it from tilting or shifting. Two through holes 13 are correspondingly provided on the side wall of the valve body 1. These two through holes 13 are slidably connected to the two adjusting rods 33, respectively. The two through holes 13 have the same shape to ensure that when the user slides one adjusting rod 33 along its corresponding through hole 13, the other adjusting rod 33 can also slide along its corresponding through hole 13 simultaneously, and the two adjusting rods 33 can always remain horizontal in the radial direction X of the valve body 1.

[0082] like Figure 1 and Figure 4As shown, the pressure regulating valve also includes a knob 6, which is sleeved on the valve body 1. The knob 6 is provided with mounting grooves 61. Specifically, the knob 6 has two mounting grooves 61 symmetrically distributed along the radial direction X of the valve body 1. The ends of the two adjusting rods 33 away from the valve block 3 are respectively fixed in the two mounting grooves 61. The mounting grooves 61 can limit the adjusting rods 33 in the circumferential direction of the valve body 1. By simply rotating the knob 6, the adjusting rods 33 can slide along the through hole 13, thereby allowing the adjusting rods 33 to engage with the limiting grooves 12 at different heights. Therefore, the user can adjust the preload of the first spring 6 by rotating the knob 6, thereby realizing the pressure regulating function of the pressure regulating valve, making the operation more convenient.

[0083] like Figure 2 and Figure 3 As shown, the side wall of the valve body 1 is provided with a platform portion 14 extending outward along the radial direction X of the valve body 1, and the platform portion 14 is arranged around the circumference of the valve body 1. Along the axial direction Z of the valve body 1, the bottom wall of the knob 6 overlaps with the platform portion 14, that is, the platform portion 14 can provide support for the knob 6, thereby improving the installation stability and rotational stability of the knob 6.

[0084] In this embodiment, to facilitate the connection between the adjusting rod 33 and the knob 6, the valve block 3 can be placed into the valve cavity 10 first; then, two adjusting rods 33 are installed on the valve block 3 using the through hole 13, so that the two adjusting rods 33 abut against each other along the radial direction X of the valve body 1, so as to avoid interference with the knob 6 and affect the installation of the knob 6; then, the knob 6 is sleeved on the outside of the valve body 1, ensuring that the two mounting slots 61 are aligned with the positions of the two adjusting rods 33; finally, a limiting block 35 is placed from the top of the valve cavity 10 into the valve block 3. The limiting block 35 can be an elastic rubber block that can push the two adjusting rods 33 outward, so that the adjusting rods 33 and the mounting slots 61 achieve a limiting fit, thereby completing the installation and fixing of the adjusting rods 33.

[0085] like Figure 3 and Figure 5As shown, a plurality of spaced grooves 141 are provided on the platform portion 14 along the circumference of the valve body 1. The pressure regulating valve also includes a positioning component 7, which is installed inside the knob 6. The positioning component 7 is used to limit the engagement with the plurality of grooves 141 during the sliding of the adjusting rod 33 and the through hole 13. The number of grooves 141 is equal to the number of limiting grooves 12, and they are arranged in a one-to-one correspondence. When the adjusting rod 33 is engaged with the limiting groove 12, the positioning component 7 can also engage with the corresponding groove 141 of the limiting groove 12, thereby indicating the current pressure level of the pressure regulating valve to the user. Specifically, the positioning component 7 includes a fixing member 71, a positioning bolt 72, and a second spring 73. The fixing member 71 is fixedly connected to the knob 6, and the fixing member 71 can be a threaded plug that is threadedly connected to the knob 6. The positioning bolt 72 is elastically connected to the fixing member 71 through the second spring 73, that is, the positioning bolt 72 can move up and down along the axial direction Z of the valve body 1, thereby enabling it to engage with the plurality of grooves 141 respectively.

[0086] This embodiment takes as an example a limiting groove 12 comprising a first limiting groove 121, a second limiting groove 122, and a third limiting groove 123 distributed from high to low along the axial direction Z of the valve body 1, and a groove 141 comprising a corresponding first groove 141a, a second groove 141b, and a third groove 141c: the distance between the first groove 141a and the second groove 141b in the circumferential direction of the valve body 1 is equal to the distance between the first limiting groove 121 and the second limiting groove 122 in the circumferential direction of the valve body 1; the distance between the second groove 141b and the third groove 141c in the circumferential direction of the valve body 1 is equal to the distance between the second limiting groove 122 and the third limiting groove 123 in the circumferential direction of the valve body 1.

[0087] like Figure 1 and Figure 5 As shown, when the adjusting rod 33 is engaged with the third limiting groove 123, the positioning bolt 72 of the positioning assembly 7 is engaged with the third groove 141c. At this time, the valve block 3 is in a lower position along the axial direction Z of the valve body 1. When the pressure relief valve is not venting, the pressure exerted by the valve block 3 on the movable tube 4 is relatively large, and the compression degree of the first spring 5 is relatively large, that is, the preload of the first spring 5 is relatively large. Only when the gas pressure in the vent pipe 2 is relatively high can the movable tube 4 overcome the preload of the first spring 5 and move downward along the axial direction Z of the valve body 1. That is, when the adjusting rod 33 is engaged with the third limiting groove 123, the pressure regulating valve can only vent and relieve pressure when the gas pressure in the pot is relatively high.

[0088] The user can control the adjusting rod 33 to engage with the second limiting groove 122 by rotating the knob 6. During the rotation of the knob 6, the adjusting rod 33 can slide along the through hole 13 from the third limiting groove 123 to the second limiting groove 122. During this process, the fixing member 71 can move synchronously with the knob 6, and the positioning bolt 72 can overcome the obstruction of the side wall of the third groove 141c and slide along the platform part 14 to the second groove 141b under the action of the fixing member 71 and the second spring 73. When the adjusting rod 33 is engaged with the second limiting groove 122, the positioning bolt 72 is engaged with the second groove 141b. At this time, the valve block 3 is in a relatively central position in the axial direction Z of the valve body 1. When the pressure regulating valve is not venting, the pressure applied by the valve block 3 to the movable tube 4 is moderate, and the compression degree of the first spring 5 is small, that is, the preload of the first spring 5 is small. When the gas pressure in the vent tube 2 is low, the movable tube 4 can overcome the preload of the first spring 5 and move downward along the axial direction Z of the valve body 1. That is, when the adjusting rod 33 is engaged with the second limiting groove 122, the pressure regulating valve can release gas pressure when the gas pressure inside the pot is at a low level.

[0089] The user can control the adjusting rod 33 to engage with the first limiting groove 121 by rotating the knob 6. During the rotation of the knob 6, the adjusting rod 33 can slide along the through hole 13 from the second limiting groove 122 to the first limiting groove 121. During this process, the fixing member 71 can move synchronously with the knob 6, and the positioning bolt 72 can overcome the obstruction of the side wall of the second groove 141b and slide along the platform portion 14 to the first groove 141a under the action of the fixing member 71 and the second spring 73. When the adjusting rod 33 engages with the first limiting groove 121, the positioning bolt 72 engages with the first groove 141a. At this time, the valve block 3 is in a relatively high position in the axial Z direction of the valve body 1, and the height of the abutment portion 31 exceeds the support range of the first spring 5. When the adjusting rod 33 is engaged with the first limiting groove 121, the first spring 5 is in the extended state, and the abutting part 31 and the movable tube 4 have a gap in the axial direction Z of the valve body 1. At this time, the vent pipe 2 and the valve chamber 10 are always in a connected state, and the pressure relief valve can continuously vent outward, thereby achieving a rapid venting effect.

[0090] Furthermore, such as Figure 3As shown, multiple transition grooves 142 can be respectively provided between the first groove 141a and the second groove 141b, and between the second groove 141b and the third groove 141c. The size of the second transition groove 142 is smaller than the sizes of the first groove 141a, the second groove 141b, and the third groove 141c, so the positioning pin 72 will not engage with the transition groove 142. During the sliding of the positioning component 7 along the platform portion 14, the positioning pin 72 can slide along the transition groove 142. The sound and feel of the positioning pin 72 sliding across the transition groove 142 are different from the sound and feel when the positioning pin 72 engages with the groove 141a, the second groove 141b, or the third groove 141c. Therefore, the user can judge whether the knob 6 has been turned to the correct position by sound and feel, improving the user experience.

[0091] This application also provides a pressure cooker, which includes a pot body and a lid. The lid is fastened to the pot body and includes a cover body and the aforementioned pressure regulating valve. The outer bottom wall of the valve body 1 of the pressure regulating valve is used for fixed connection with the cover body. When the lid is fastened to the pot body, the vent pipe 2 can communicate with the interior of the pot body, and the pressure regulating valve can realize the pressure relief and venting function of the pressure cooker. Since the pressure regulating valve has the above-described technical effects, the pressure cooker including the pressure regulating valve should also have the above technical effects, which will not be elaborated here.

[0092] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure regulating valve, characterized in that, include: The valve body (1) has a valve cavity (10), and an exhaust port (11) is provided at the bottom of the side wall of the valve body (1), which connects the valve cavity (10) to the outside. Vent pipe (2) is fixedly installed on the bottom wall of the valve body (1) and is used to communicate with the inside of the pressure cooker. A valve block (3) is installed in the valve cavity (10), and the valve block (3) is provided with an abutment part (31); The movable tube (4) is movably connected to the vent tube (2), and the movable tube (4) connects the vent tube (2) and the valve chamber (10); The movable tube (4) is used to move upward along the axial direction of the valve body (1) and seal with the abutment part (31) to cut off the communication between the vent tube (2) and the valve cavity (10); the movable tube (4) is also used to move downward along the axial direction of the valve body (1) and away from the abutment part (31) so that the vent tube (2) communicates with the valve cavity (10).

2. The pressure regulating valve according to claim 1, characterized in that, The top end of the movable tube (4) is provided with an extension (41), which is used to abut against the abutment (31). A first sealing ring (42) is installed at one end of the extension (41) facing the abutment (31).

3. The pressure regulating valve according to claim 1, characterized in that, Along the axial direction of the valve body (1), the valve block (3) is provided with a receiving groove (32) on the side facing the movable tube (4), and the abutment part (31) is located in the receiving groove (32).

4. The pressure regulating valve according to claim 1, characterized in that, The pressure regulating valve also includes a first spring (5), which is sleeved on the movable tube (4) along the axial direction of the valve body (1). The two ends of the first spring (5) abut against the bottom wall of the movable tube (4) and the valve body (1), respectively. When the gas pressure in the vent pipe (2) is less than the preload of the first spring (5), the movable pipe (4) is used to move upward along the axial direction of the valve body (1) under the action of the first spring (5) and seal with the abutment part (31). When the gas pressure in the vent pipe (2) is greater than the preload of the first spring (5), the movable pipe (4) is used to move downward along the axial direction of the valve body (1) and away from the abutment part (31) under the action of the gas pressure in the vent pipe (2).

5. The pressure regulating valve according to claim 4, characterized in that, Along the axial direction of the valve body (1), the side wall of the valve body (1) is provided with a plurality of limiting grooves (12) of different heights; The valve block (3) is provided with an adjusting rod (33), which extends radially along the valve body (1). The adjusting rod (33) is used to engage with the plurality of limiting grooves (12) respectively to adjust the preload of the first spring (5).

6. The pressure regulating valve according to claim 5, characterized in that, The valve body (1) has a through hole (13) on its side wall, and the through hole (13) extends obliquely in the circumferential direction of the valve body (1). The through hole (13) has a lower wall surface (131), and a plurality of limiting grooves (12) are spaced apart on the lower wall surface (131) along the extending direction of the through hole (13); The adjusting rod (33) is slidably connected to the through hole (13), and the adjusting rod (33) can be limited and engaged with the multiple limiting grooves (12) respectively during the sliding process of the through hole (13).

7. The pressure regulating valve according to claim 6, characterized in that, The pressure regulating valve also includes a knob (6), which is sleeved on the valve body (1) and has a mounting groove (61). Along the radial direction of the valve body (1), the end of the adjusting rod (33) away from the valve block (3) is fixed in the mounting groove (61); The knob (6) is used to drive the adjusting rod (33) to slide along the through hole (13).

8. The pressure regulating valve according to claim 7, characterized in that, The side wall of the valve body (1) is provided with a platform portion (14) extending radially outward along the valve body (1), and the platform portion (14) is arranged around the valve body (1) circumferentially. Along the circumference of the valve body (1), the platform portion (14) is provided with a plurality of spaced grooves (141); The pressure regulating valve also includes a positioning component (7), which is installed inside the knob (6). The positioning component (7) is used to limit the movement of the adjusting rod (33) and the through hole (13) and cooperate with the plurality of grooves (141) respectively.

9. The pressure regulating valve according to claim 8, characterized in that, The positioning component (7) includes a fixing member (71), a positioning bolt (72), and a second spring (73). The fixing member (71) is fixedly connected to the knob (6), and the positioning bolt (72) is elastically connected to the fixing member (71) through the second spring (73). The positioning bolt (72) is used to limit the engagement with the plurality of grooves (141) respectively.

10. A pressure cooker, characterized in that, include: Pot body; A pot lid, which is fastened to the pot body, the pot lid comprising a lid body and a pressure regulating valve as described in any one of claims 1-9, the pressure regulating valve being installed on the lid body.

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