CN211242832U - Pressure regulating valve, cover and cooking utensil - Google Patents

Abstract

The utility model relates to the technical field of cooking appliances, in particular to a pressure regulating valve, a cover and a cooking appliance, which are arranged on an exhaust pipe and comprise a valve body, a valve core assembly and a pressure regulating part, wherein the pressure regulating part is movably connected with the valve body; one of the pressure regulating part and the first valve core is provided with a groove, the other valve core is provided with a bulge matched with the groove, the bulge or the groove positioned on the pressure regulating part is provided with a pushing surface, and the pushing surface is an uneven surface; the pressure regulating part is operated to move relative to the valve body, the protrusion is driven to abut against the groove, and the protrusion can move along the pushing surface, so that the first valve core moves axially relative to the second valve core, and the first valve core extends out of the second valve core to block the first exhaust port or retracts to open the first exhaust port. The utility model provides an air-vent valve, lid and cooking utensil adopts simple, the stable structure of cooperation in order to realize the pressure regulating through changing exhaust area.

Description

Pressure regulating valve, cover and cooking utensil

Technical Field

The utility model relates to a cooking utensil technical field especially relates to an air-vent valve, lid and cooking utensil.

Background

Pressure cookers on the market at present generally control the pressure in the cooker through a pressure regulating valve thereon, and maintain the fixed pressure in the cooker, thereby cooking the food in the cooker. The pressure regulating valve that uses is when the pressure regulating, and some come the pressure regulating through the weight that changes the valve body, if increase the balancing weight, nevertheless getting repeatedly of balancing weight puts the in-process and loses easily, and the pressure that utilizes the spring that sets up is realized the pressure regulating a bit, but the valve of spring pressure regulating has the problem that the exhaust leads to easily spouting rice milk in succession, thereby and easily make the spring force change the pressure value of influence pressure regulating valve at the long-term oil smoke of culinary art in-process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air-vent valve, lid and cooking utensil adopt simple, the stable structure of cooperation in order to realize the pressure regulating through changing exhaust area.

The utility model provides an air-vent valve, which is arranged on an exhaust pipe, the exhaust pipe is provided with a first exhaust port and a second exhaust port which are communicated with each other, the sectional area of the second exhaust port is larger than that of the first exhaust port, the air-vent valve comprises a valve body, the valve body is provided with a slidable valve core assembly, the valve core assembly comprises a first valve core and a second valve core which can slide relatively and are sleeved, the first valve core is movably connected with the second valve core, and the second valve core is connected with the valve body;

the second valve core blocks the second exhaust port, and the first valve core is slidingly accommodated in the second valve core;

the pressure regulating valve also comprises a pressure regulating part which is movably connected with the valve body;

one of the pressure regulating part and the first valve core is provided with a groove, the other valve core is provided with a bulge matched with the groove, the bulge or the groove positioned on the pressure regulating part is provided with a pushing surface, and the pushing surface is an uneven surface;

the pressure regulating part is operated to move relative to the valve body, the protrusion is driven to abut against the groove, and the protrusion can move along the pushing surface, so that the first valve core moves axially relative to the second valve core, and the first valve core extends out of the second valve core to block the first exhaust port or retracts to open the first exhaust port.

In one possible design, the pushing surface comprises a first positioning section and a second positioning section;

the first positioning section and the second positioning section are both of an outward convex structure or an inward concave structure, and have different concave depths or outward convex heights along the axis direction.

In a possible design, the pushing surface further includes a transition section, and the transition section connects the first positioning section and the second positioning section in a smooth transition manner.

In one possible design, the groove is located in the pressure regulating part, and the first positioning section and the second positioning section are concave structures located on the bottom wall of the groove;

the protrusion is located on the first valve core, and the protrusion is an inclined plane protruding outwards and inclining.

In one possible design, the pressure regulating part is movably connected to the side wall of the pressure regulating valve;

the movement direction of the pressure regulating part is perpendicular to the axis direction of the exhaust pipe, and the first positioning section and the second positioning section are sequentially arranged along the movement direction of the pressure regulating part.

In one possible design, the pressure regulating valve further comprises an elastic member;

the elastic piece is sleeved on the first valve core and elastically abuts against the valve body and the first valve core.

In one possible design, the valve body includes the interior valve body and the outer valve body that cup joint, second case fixed connection in interior valve body, outer valve body is connected with the valve cap.

In one possible design, the valve core assembly further comprises a seal;

the seal is located at the interface between the first spool and the second spool.

The utility model also provides a lid, the power distribution cover comprises a cover body, the lid includes foretell air-vent valve, the air-vent valve is installed on the lid.

The utility model also provides a cooking utensil, fit including ware body and lid the lid of ware body, the lid be in the aforesaid lid.

The utility model has the advantages that:

the utility model provides an air-vent valve, which is arranged on an exhaust pipe, the exhaust pipe is provided with a first exhaust port and a second exhaust port which are communicated with each other, the sectional area of the second exhaust port is larger than that of the first exhaust port, the air-vent valve comprises a valve body, the valve body is provided with a slidable valve core assembly, the valve core assembly comprises a first valve core and a second valve core which can slide relatively and are sleeved, the first valve core is movably connected with the second valve core, and the second valve core is connected with the valve body; the second valve core blocks the second exhaust port, and the first valve core is accommodated in the second valve core in a sliding manner; the pressure regulating valve also comprises a pressure regulating part which is movably connected with the valve body; one of the pressure regulating part and the first valve core is provided with a groove, the other one is provided with a bulge matched with the groove, the bulge or the groove positioned on the pressure regulating part is provided with a pushing surface, and the pushing surface is an uneven surface; the operation pressure regulating part moves relative to the valve body to drive the protrusion to abut against the groove and move along the abutting surface, so that the first valve core moves axially relative to the second valve core, and the first valve core extends out of the second valve core to block the first exhaust port or retracts to open the first exhaust port.

In order to realize the conversion of different pressures through the pressure regulating valve and realize the pressure regulation, the first valve core is sleeved with the second valve core, the first valve core is movably connected with the second valve core, a protrusion and a groove which are matched with each other are arranged on the pressure regulating part and the first valve core, so that one of the first valve core and the second valve core can move along the pushing surface, and the pushing surface is arranged to be an uneven surface, so that the movement of the pressure regulating part can drive the first valve core to move upwards or downwards relative to the movement axis of the second valve core, and the first valve core extends out of the second valve core to block the first exhaust port and the first valve core extends into the second valve core to block the second exhaust port through mutual conversion. On the basis that gravity is not changed, the pressure regulating portion is driven to move so that the protrusion is matched with the groove, and the first valve core can move upwards or downwards along the second valve core shaft due to the fact that the first valve core can move along the uneven surface, so that the mode that the first valve core moves to be matched with the first exhaust port or the mode that the second valve core is matched with the second exhaust port is changed, the change of the exhaust area is achieved, and therefore the pressure of the pressure regulating valve is converted. The matching structure is simple, the change of the exhaust area can be conveniently and quickly realized by driving the pressure regulating part, and the air conditioner is convenient and quick to use and is convenient for users to use.

The utility model also provides a lid, this lid include lid and above-mentioned air-vent valve, and the air-vent valve is installed on the lid, and this lid is the same with the advantage that the air-vent valve in the aforesaid had, no longer gives unnecessary details here.

The utility model provides a cooking utensil, this cooking utensil include above-mentioned lid, and this cooking utensil is the same with the advantage that the lid in the aforesaid had, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a section of a pressure regulating valve provided in an embodiment of the present invention in a low pressure state;

fig. 2 is a sectional view of an exhaust pipe of a pressure regulating valve according to an embodiment of the present invention;

fig. 3 is a sectional view of a pressure regulating portion of a pressure regulating valve according to an embodiment of the present invention;

fig. 4 is a sectional view of an inner valve body of a pressure regulating valve according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a first valve element of a pressure regulating valve according to an embodiment of the present invention;

FIG. 6 is a sectional view of the valve body, the bonnet and the pressure regulating portion of the pressure regulating valve according to the embodiment of the present invention;

fig. 7 is a sectional view showing the valve body, the bonnet and the pressure regulating portion engaged with each other during the movement of the first spool of the pressure regulating valve according to the embodiment of the present invention;

fig. 8 is a front sectional view of the pressure regulating valve according to the embodiment of the present invention in a high pressure state.

Icon:

1-an exhaust pipe;

11-an exhaust through hole;

12-a first exhaust port;

13-a second exhaust port;

2-a valve body;

21-an inner valve body;

211-a through hole;

22-an outer valve body;

23-a cavity;

3-valve cap;

31-a pressure regulating cavity;

4-pressure regulating part;

41-groove;

42-projection;

421-inclined plane;

43-pushing surface;

431-a first positioning segment;

432-a second positioning segment;

433-a transition section;

44-a stop block;

5-a valve core assembly;

51-a first spool;

511-a first mating face;

512-card slot;

513-butting faces;

52-a second valve spool;

521-a second mating surface;

6-a seal;

7-elastic member.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the present embodiment provides a pressure regulating valve for a cooking appliance, such as a pressure cooker, an electric pressure cooker, etc., which needs to change an internal pressure, and is included in the cooking appliance of the present application, and is not particularly limited herein. The pressure regulating valve is mounted on an exhaust pipe 1, the exhaust pipe 1 has an exhaust through hole 11, and the exhaust through hole 11 is provided with a first exhaust port 12 and a second exhaust port 13 which are communicated with each other. The pressure regulating valve comprises a valve body 2 and a valve core assembly 5, wherein the valve body 2 is provided with a containing cavity 23, the containing cavity 23 is internally provided with the slidable valve core assembly 5, a second exhaust port 13 is communicated with the containing cavity 23, the sectional area of the second exhaust port 13 is larger than that of a first exhaust port 12, the valve core assembly 5 comprises a first valve core 51 and a second valve core 52 which can slide relatively and are sleeved, the first valve core 51 is movably connected with the second valve core 52, the second valve core 52 is connected with the valve body 2, the second exhaust port 13 is blocked by the second valve core 52, the first valve core 51 is accommodated in the second valve core 52 in a sliding mode, and the first exhaust port 12 can be blocked by the first valve core 51 through axial movement.

Optionally, the end of the first valve core 51 has a first mating surface 511, and when the first valve core 51 moves relative to the second valve core 52 to block the first exhaust port 12, the first mating surface 511 abuts against the edge of the first exhaust port 12. The end of the second valve spool 52 has a second engagement surface 521, and when the second valve spool 52 blocks the second exhaust port 13, the second engagement surface 521 abuts against the edge of the second exhaust port 13. The first mating surface 511 and the second mating surface 521 may be arc surfaces or tapered surfaces, as long as they can be used to block the exhaust port, and are not limited herein.

Wherein, the air-vent valve still includes valve cap 3, and valve cap 3 is connected with valve body 2, and valve body 2 can integrated into one piece with valve cap 3, also can dismantle the connection through modes such as screw thread, fixture block draw-in groove. The connected interior of the valve body 2 and the bonnet 3 forms a pressure regulating chamber 31, and the first valve spool 51 is disposed at least partially in the pressure regulating chamber 31 and is movable within the pressure regulating chamber 31. Have in the valve body 2 and hold chamber 23, 2 bottoms of valve body are equipped with the trompil that the intercommunication holds chamber 23, and blast pipe 1 part at least stretches into from the trompil, and is connected through the sheetmetal between blast pipe 1 that is located the trompil portion and the valve body 2, and this sheetmetal is the loop configuration, and the groove of joint in valve body 2 is passed through to its outer edge, and inner edge sliding connection is in the spout of 1 outer wall of blast pipe to make valve body 2 can follow the motion of 1 axis direction of blast pipe.

Optionally, as shown in fig. 4, in order to facilitate assembly of components in the pressure regulating valve, movement of the first valve element 51 relative to the second valve element 52 can be achieved by driving the pressure regulating portion 4 to move, the valve body 2 includes an inner valve body 21 and an outer valve body 22 which are sleeved, the accommodating cavity 23 is disposed in the inner valve body 21, the second valve element 52 is fixedly connected to the inner valve body 21 and extends into the accommodating cavity 23, the first valve element 51 is sleeved in the second valve element 52, and the bonnet 3 is connected with the outer valve body 22 to form the pressure regulating cavity 31.

Specifically, as shown in fig. 3 and 5, the pressure regulating valve further comprises a pressure regulating part 4, and the pressure regulating part 4 is movably connected to the valve body 2; one of the pressure regulating part 4 and the first valve core 51 is provided with a groove 41, the other one is provided with a protrusion 42 matched with the groove 41, the protrusion 42 or the groove 41 positioned on the pressure regulating part 4 is provided with a pushing surface 43, and the pushing surface 43 is an uneven surface; the pressure regulating portion 4 is operated to move relative to the valve body 2, so as to drive the protrusion 42 to abut against the groove 41 and move along the abutting surface 43, so that the first valve core 51 moves axially relative to the second valve core 52, and the first valve core 51 extends out of the second valve core 52 to block the first exhaust port 12 or retracts to open the first exhaust port 12.

Because the pressure regulating portion 4 is movably connected with the valve body 2, and the movement of the pressure regulating portion 4 can enable the protrusion 42 to move along the pushing surface 43 in a state of being pushed against the groove 41, and because the pushing surface 43 is designed to be an uneven surface, the first valve core 51 can axially ascend or descend relative to the second valve core 52, the first valve core 51 retracts into the second valve core 52 or extends out of the second valve core 52 to the accommodating cavity 23, and the first valve core 51 blocks the first exhaust port 12 or opens the first exhaust port 12. In the process that the movement of the pressure regulating part 4 finally drives the first valve core 51 to move relative to the second valve core 52, no matter the first valve core 51 blocks or opens the first exhaust port 12, under the action of the gravity of the valve body 2, the bonnet 3, the pressure regulating part 4 and the whole valve core assembly 5, the second valve core 52 can block the second exhaust port 13, so that the gravity for blocking the exhaust ports by the same pressure regulating valve is the same.

When the pressure regulating valve is used, as shown in fig. 1 and 8, when the pressure regulating portion 4 is driven to move so that the abutting protrusion 42 and the groove 41 move relatively, the movement track is the uneven surface of the abutting surface 43, so that the first valve core 51 moves upward relative to the second valve core 52 to retract the first valve core 51 into the second valve core 52, under the action of gravity, the second exhaust port 13 is blocked by the second valve core 52, the internal pressure of the cooking appliance reaches the first pressure, and when the internal pressure is greater than the gravity, the first pressure pushes the valve body 2, the bonnet 3, the pressure regulating portion 4 and the valve core assembly 5 to move upward integrally, so that the second exhaust port 13 is opened, and the internal gas is exhausted through the second exhaust port 13, so that the internal pressure is maintained at the first pressure. When the pressure regulating portion 4 is driven to move so that the abutted protrusion 42 and the groove 41 move relatively, the movement track is an uneven surface of the abutting surface 43, so that the first valve core 51 moves downward relative to the second valve core 52 until the first valve core 51 extends out of the second valve core 52, and at least part of the first valve core 51 is arranged in the cavity 23, under the action of gravity, the first exhaust port 12 is blocked by the first valve core 51, the internal pressure of the cooking appliance reaches a second pressure, and when the internal pressure is greater than the gravity, the second pressure pushes the valve body 2, the bonnet 3, the pressure regulating portion 4 and the valve core assembly 5 to move integrally upward, so that the first exhaust port 12 is opened, and the internal gas is exhausted through the first exhaust port 12, so that the internal pressure is maintained at the second pressure. In the above two different modes of the valve core for blocking different exhaust ports, according to the principle that F (gravity) is P (pressure) S (area), on the basis of the same gravity, if the pressure needs to be changed, the sectional area of the exhaust port can be adjusted. Since the sectional area of the second exhaust port 13 is larger than that of the first exhaust port 12, the second pressure is larger than the first pressure, so that the pressure regulating valve can regulate the interior of the cooking appliance in a high pressure state when the first valve core 51 blocks the first exhaust port 12, and can regulate the interior of the cooking appliance in a low pressure state when the second valve core 52 blocks the second exhaust port 13, thereby realizing the regulation of different pressures of the pressure regulating valve.

It should be emphasized here that when the first valve body 51 is extended out of the second valve body 52 to close the first exhaust port 12, the second valve body 52 can simultaneously close the second exhaust port 13 due to the action of gravity when the valve is mounted on the exhaust pipe 1. When the internal air pressure reaches the second pressure that lifts up the first valve core 51, the first exhaust port 12 is opened, and the valve body 2 and the bonnet 3 are moved upward, and since the second valve core 52 is connected to the valve body 2, the second valve core 52 is moved upward, so that the second valve core 52 opens the second exhaust port 13, thereby performing exhaust.

Therefore, in order to realize the conversion of different pressures through the pressure regulating valve to realize pressure regulation, the first valve core 51 and the second valve core 52 are sleeved, the first valve core 51 is movably connected with the second valve core 52, the pressure regulating part 4 and the first valve core 51 are provided with the matched protrusion 42 and the groove 41 so that one of the two can move along the pushing surface 43, and the pushing surface 43 is provided with an uneven surface, so that the movement of the pressure regulating part 4 can drive the first valve core 51 to move relative to the second valve core 52 and axially move up or down, and the first valve core 51 extends out of the second valve core 52 to block the first exhaust port 12 and the first valve core 51 extends into the second valve core 52 so that the second valve core 52 blocks the mutual conversion of the second exhaust port 13. On the basis of unchanged gravity, the pressure regulating part 4 is driven to move so as to enable the protrusion 42 to be matched with the groove 41, and the first valve core 51 can be axially lifted or lowered along the second valve core 52 due to the fact that the first valve core 51 can move along the uneven surface, so that the mode that the first valve core 51 moves to be matched with the first exhaust port 12 or the mode that the second valve core 52 is matched with the second exhaust port 13 is changed, the exhaust area is changed, and the pressure of the pressure regulating valve is converted. The matching structure is simple, the change of the exhaust area can be conveniently and quickly realized by driving the pressure regulating part 4 to move, and the use is convenient and quick and convenient for users.

As one embodiment of the present application, as shown in fig. 7 and 8, the pushing surface 43 includes a first positioning section 431 and a second positioning section 432; the first positioning section 431 and the second positioning section 432 are both convex structures or concave structures, and the first positioning section 431 and the second positioning section 432 have different concave depths or convex heights along the axial direction. In order to enable the first valve core 51 to ascend or descend relative to the second valve core 52 by moving along the uneven pushing surface 43 when the pushing protrusion 42 is matched with the groove 41 and the pressure regulating portion 4 is driven to move relative to the valve body 2, so that the first exhaust port 12 is blocked or opened by the first valve core 51.

Optionally, the uneven surface of the pushing surface 43 at least comprises a first positioning section 431 and a second positioning section 432, and the first positioning section 431 is located above the second positioning section 432, so that the design can be more clearly determined, when the pressure regulating part 4 moves to abut against the first positioning section 431 relative to the valve body 2, the first exhaust port 12 is opened, and when the pressure regulating part 4 moves to abut against the second positioning section 432 relative to the valve body 2, the first exhaust port 12 is blocked, the structure is simple, and the operation is convenient.

Specifically, the groove 41 is located in the pressure regulating portion 4, and the first positioning section 431 and the second positioning section 432 are concave structures located on the bottom wall of the groove 41; the protrusion 42 is located on the first valve core 51, and the protrusion 42 is a slope 421 protruding outward and inclined. The first positioning section 431 and the second positioning section 432 are arranged to be concave structures, and the protrusion 42 is a convex structure, so that in the process that the pressure regulating part 4 moves relative to the valve body 2, when the protrusion 42 abuts against the first positioning section 431 or the second positioning section 432, the movement of the pressure regulating part 4 can be limited, a limiting effect is achieved, and the first valve core 51 is enabled to maintain the state of plugging or opening the first exhaust port 12. The problems that the pressure regulating part 4 can not be accurately adjusted in place or the valve core and the exhaust pipe 1 are damaged due to the fact that a user cannot directly see the matching condition of the internal valve core and the exhaust port in the movement process of operating the pressure regulating part 4 and the pressure regulating part 4 can not be moved excessively or moved in place are solved.

It should be emphasized here that, the recess 41 is provided in the pressure regulating portion 4, and the corresponding protrusion 42 is provided in the first valve core 51, which is an alternative of the present application, and the protrusion 42 may also be provided in the pressure regulating portion 4, and the recess 41 is provided in the first valve core 51, which is not limited herein.

In addition, corresponding to the specific matching position of the groove 41 and the protrusion 42, since the groove 41 is disposed in the pressure regulating portion 4, in order to enable the pressure regulating portion 4 to move relative to the valve body 2, the abutted protrusion 42 can move to the first positioning section 431 or the second positioning section 432 along the abutting surface 43 when matching with the groove 41, so that the first valve element 51 can axially move up or down relative to the second valve element 52. The corresponding push surface 43 is disposed on the bottom wall of the groove 41, and along the axial direction of the exhaust pipe 1, the first positioning section 431 is located above the second positioning section 432, so as to achieve a better high-pressure and low-pressure conversion effect. Optionally, the first positioning section 431 and the second positioning section 432 may also be outward protruding structures, as long as the protrusion 42 and the groove 41 abut against each other, when the pressure regulating portion 4 is driven to move to the first positioning section 431 or the second positioning section 432, the first exhaust port 12 can be opened or blocked correspondingly, and the first positioning section 431 and the second positioning section 432 can simultaneously play a limiting role, and various different combination forms may be adopted, which are not specifically limited herein.

More specifically, in order to facilitate the driving of the pressure regulating portion 4 to move relative to the valve body 2, the protrusion 42 can be abutted against the first positioning section 431 and the second positioning section 432 to realize the mutual conversion between the high pressure and the low pressure, the abutting surface 43 further includes a transition section 433, and the transition section 433 smoothly and transitionally connects the first positioning section 431 and the second positioning section 432. Through the transition of the transition section 433, the protrusion 42 moves relative to the pushing surface 43, and when the first positioning section 431 and the second positioning section 432 are mutually converted, a guiding effect can be achieved, and meanwhile, the driving force for driving the pressure regulating part 4 to move can be saved.

Optionally, in order to be able to block the first exhaust port 12 and open the switching process of first exhaust port 12 at first case 51, protruding 515 can be convenient quick deviate from in the first positioning section 431 or the second positioning section 432 of indent, the changeover portion 433 that sets up is the arc transition, so that when promoting pressure regulating portion 4 and moving, the push force to pressure regulating portion 4 makes protruding 52 can move in order to deviate from the indent structure of first positioning section 431 or second positioning section 432 along the curved transition surface, it uses force sparingly, be convenient for the complex conversion.

The application also provides a specific implementation mode, as shown in fig. 1 and 8, in order to facilitate the assembly of the pressure regulating valve, the conversion between high pressure and low pressure can be realized through the cooperation of a simple mechanism, and the pressure regulating part 4 is movably connected to the side wall of the pressure regulating valve; the movement direction of the pressure regulating part 4 is perpendicular to the axial direction of the exhaust pipe 1, and the first positioning section 431 and the second positioning section 432 are sequentially arranged along the movement direction of the pressure regulating part 4. Optionally, the pressure regulating portion 4 is a rod-shaped structure and penetrates through the side wall of the bonnet 3, the length direction of the rod-shaped structure of the pressure regulating portion 4 is the movement direction of the pressure regulating portion 4, the movement direction is perpendicular to the axial direction of the exhaust through hole 11, and at least part of the pressure regulating portion 4 is arranged in the pressure regulating cavity 31, so that the protrusion 42 and the groove 41 are matched in the pressure regulating cavity 31, and the protrusion 42 is matched with the movement along the abutting surface 43.

Specifically, as shown in fig. 1 and 5, the pressure regulating valve further includes an elastic member 7, and the elastic member 7 is sleeved on the first valve core 51 and elastically abuts against the valve body 2 and the first valve core 51. The first valve core 51 has a top surface 513, the inner valve body 21 has a through hole 211, a second valve core 52 extending into the cavity 23 is disposed at a position corresponding to the through hole 211, the first valve core 51 penetrates through the through hole 211 and is sleeved in the second valve core 52, and the elastic element 7 penetrates through the first valve core 51 and elastically abuts against the top surface 513 and the upper end of the inner valve body 21. When the protrusion 42 moves along the pushing surface 43 to a position where the protrusion 42 is engaged with the corresponding first positioning section 431 or the corresponding second positioning section 432, the protrusion 42 can be automatically engaged with the recessed positioning section by the elastic force of the elastic member 7, so that the first valve element 51 blocks or opens the first exhaust port 12.

Optionally, along the movement direction of the pressure regulating part 4, the pressure regulating part 4 is provided with a stop block 44; when the pressure regulating portion 4 moves relative to the pressure regulating valve, the stopper 44 abuts against the side wall of the pressure regulating valve to restrict the movement of the pressure regulating portion 4. The arrangement of the stop block 44 can avoid the damage of the valve core caused by the collision between the valve core inside the pressure regulating part 4 and the inner wall of the cavity 23 due to the over-movement of the pressure regulating part caused by the misoperation of a user, and the service life of the pressure regulating valve is prolonged. It should be emphasized that other structures capable of functioning as a stopper may be used, and are not specifically limited herein.

More specifically, in order to prevent the internal gas from leaking through the matching gap between the first valve core 51 and the second valve core 52 which are sleeved together when the pressure regulating valve is in use, the valve core assembly 5 further comprises a sealing member 6, and the sealing member 6 is located at the matching position between the first valve core 51 and the second valve core 52 and is used for sealing the matching gap between the first valve core 51 and the second valve core 52. In order to avoid the situation that the sealing element 6 moves along with the first valve element 51 when the first valve element 51 moves relative to the second valve element 52 and the sealing element 6 falls off from the matching gap, a clamping groove 512 is formed in the side wall of the first valve element 51, the sealing element 6 is clamped in the clamping groove 512, and at least part of the sealing element extends out of the side wall of the first valve element 51 to block the matching position of the first valve element 51 and the second valve element 52.

The utility model also provides a lid can be used to the lid fit the utility model discloses a cooking utensil, it includes lid and foretell air-vent valve, and the air-vent valve is installed on blast pipe 1. Specifically, the valve body 2 is located on the cover body, and the lower end of the exhaust pipe 1 passes through the cover body and is located below the cover body.

The utility model provides a cooking utensil still includes the ware body, and the ware body has the inner chamber, and when the lid including the air-vent valve fits the ware body, the lid is passed to the lower extreme of blast pipe 1, and at least part is located the inner chamber of ware body to hold chamber 23 and inner chamber intercommunication, this cooking utensil is the same with the advantage that above-mentioned air-vent valve had, no longer gives unnecessary details here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A pressure regulating valve is installed on an exhaust pipe (1), the exhaust pipe (1) is provided with a first exhaust port (12) and a second exhaust port (13) which are communicated with each other, the sectional area of the second exhaust port (13) is larger than that of the first exhaust port (12), the pressure regulating valve comprises a valve body (2), the valve body (2) is provided with a slidable valve core assembly (5), the pressure regulating valve is characterized in that the valve core assembly (5) comprises a first valve core (51) and a second valve core (52) which can slide relatively and are sleeved, the first valve core (51) is movably connected to the second valve core (52), and the second valve core (52) is connected to the valve body (2);

the second valve core (52) blocks the second exhaust port (13), and the first valve core (51) is slidingly accommodated in the second valve core (52);

the pressure regulating valve also comprises a pressure regulating part (4), and the pressure regulating part (4) is movably connected to the valve body (2);

one of the pressure regulating part (4) and the first valve core (51) is provided with a groove (41), the other one is provided with a protrusion (42) matched with the groove (41), the protrusion (42) or the groove (41) positioned on the pressure regulating part (4) is provided with a pushing surface (43), and the pushing surface (43) is an uneven surface;

the pressure regulating part (4) is operated to move relative to the valve body (2), the protrusion (42) is driven to abut against the groove (41) and can move along the pushing surface (43), so that the first valve core (51) moves along the axial direction relative to the second valve core (52), and the first valve core (51) extends out of the second valve core (52) to block the first exhaust port (12) or retracts to open the first exhaust port (12).

2. The pressure regulating valve according to claim 1, wherein said push surface (43) comprises a first positioning section (431) and a second positioning section (432);

the first positioning section (431) and the second positioning section (432) are both convex structures or concave structures, and the first positioning section (431) and the second positioning section (432) have different concave depths or convex heights along the axial direction.

3. The pressure regulating valve according to claim 2, wherein said push surface (43) further comprises a transition section (433), said transition section (433) smoothly connecting said first positioning section (431) and said second positioning section (432).

4. The pressure regulating valve according to claim 2, characterized in that the groove (41) is positioned at the pressure regulating part (4), and the first positioning section (431) and the second positioning section (432) are concave structures positioned at the bottom wall of the groove (41);

the bulge (42) is positioned on the first valve core (51), and the bulge (42) is an inclined plane (421) which protrudes outwards and inclines.

5. The pressure regulating valve according to claim 2, characterized in that said pressure regulating portion (4) is movably connected to said pressure regulating valve side wall;

the movement direction of the pressure regulating part (4) is perpendicular to the axial direction of the exhaust pipe (1), and the first positioning section (431) and the second positioning section (432) are sequentially arranged along the movement direction of the pressure regulating part (4).

6. A pressure regulating valve according to any one of claims 1-5, characterized in that it further comprises an elastic member (7);

the elastic piece (7) is sleeved on the first valve core (51) and elastically abuts against the valve body (2) and the first valve core (51).

7. The pressure regulating valve according to any one of claims 1-5, characterized in that said valve body (2) comprises an inner valve body (21) and an outer valve body (22) which are sleeved, said second spool (52) is fixedly connected to said inner valve body (21), and said outer valve body (22) is connected to said bonnet (3).

8. The pressure regulating valve according to any one of claims 1-5, characterized in that said spool assembly (5) further comprises a seal (6);

the seal (6) is located at the cooperation between the first spool (51) and the second spool (52).

9. A cover comprising a cover body, characterized in that the cover further comprises a pressure regulating valve according to any one of claims 1 to 8, said pressure regulating valve being mounted on said cover body.

10. A cooking appliance comprising a body and a lid covering the body, wherein the lid is the lid of claim 9.

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