阅读说明：本技术 一种防倾倒限压阀 (Anti-toppling pressure limiting valve ) 是由 陈合林 于 2021-01-21 设计创作，主要内容包括：一种防倾倒限压阀,用于高压烹饪器具的排气管,包括阀帽、阀体和阀芯,阀芯上部穿过阀体与阀帽相接,所述阀体顶部中孔内设有复位弹性体,所述阀帽的上底面和复位弹性体的上表面中间分别设有球面凹槽,两个球面凹槽连续过渡形成球形腔体,所述阀芯上部呈球体,且可自由转动的位于球形腔体内,中部呈尺寸较小的柱体,复位弹性体的中孔套在柱体上。本发明的限压阀结构在排气工作时不易倾斜,能保证阀芯与排气管口的均匀接触,达到提升密封性、保证工作压力稳定,防止溢水等作用。(An anti-toppling pressure limiting valve is used for an exhaust pipe of a high-pressure cooking appliance and comprises a valve cap, a valve body and a valve core, wherein the upper portion of the valve core penetrates through the valve body and is connected with the valve cap, a reset elastic body is arranged in a center hole in the top of the valve body, spherical grooves are respectively arranged in the middle of the upper bottom surface of the valve cap and the upper surface of the reset elastic body, the two spherical grooves are in continuous transition to form a spherical cavity, the upper portion of the valve core is spherical and can freely rotate and be located in the spherical cavity, the middle portion of the valve core is a cylinder. The pressure limiting valve structure is not easy to incline when in exhaust operation, can ensure the uniform contact of the valve core and the exhaust pipe opening, and achieves the effects of improving the sealing property, ensuring the stable working pressure, preventing water overflow and the like.)

1. The utility model provides an anti-toppling pressure limiting valve for blast pipe (7) of high pressure cooking utensil, includes valve cap (1), valve body (2) and case (3), and case (3) upper portion is passed valve body (2) and is met with valve cap (1), its characterized in that: the valve is characterized in that a reset elastic body (4) is arranged in a center hole in the top of the valve body (2), spherical grooves are respectively arranged in the middle of the upper bottom surface of the valve cap (1) and the upper surface of the reset elastic body (4), the two spherical grooves are in continuous transition to form a spherical cavity (100), the upper part of the valve core (3) is a sphere and can freely rotate and is positioned in the spherical cavity (100), the middle part of the valve core is a cylinder with a small size, and the center hole of the reset elastic body (4) is sleeved on the cylinder.

2. An anti-toppling pressure limiting valve according to claim 1, wherein: and a thread structure (200) is arranged between the inner wall of the bottom of the valve cap (1) and the outer wall of the valve body (2).

3. An anti-toppling pressure limiting valve according to claim 2, wherein: the top surface of the valve body (2) is provided with a ring groove, and a sealing ring (5) is arranged in the ring groove.

4. An anti-toppling pressure limiting valve according to claim 1, wherein: an annular groove is formed in the inner wall of the bottom of the valve body (2), and a clamp spring (6) is arranged in the annular groove.

5. An anti-toppling pressure limiting valve according to claim 1, wherein: the contact surface of the valve body (2) and the reset elastic body (4) is set to be an abutting step structure (300).

6. An anti-toppling pressure limiting valve according to claim 1, wherein: the lower part of the valve core (3) is a sphere or a cone.

7. An anti-toppling pressure limiting valve according to claim 6, wherein: the inner wall of the pipe opening of the exhaust pipe (7) is designed to be a circular truncated cone inclined surface or a concave spherical curved surface.

8. An anti-toppling pressure limiting valve according to any one of claims 1 to 7, wherein: the valve core (3) is made of one of copper, stainless steel, ceramic or glass.

9. An anti-toppling pressure limiting valve according to any one of claims 1 to 7, wherein: the reset elastomer (4) is made of silicon rubber.

Technical Field

The invention relates to the technical field of kitchen cooking appliances, in particular to an anti-toppling pressure limiting valve.

Background

The pressure cooker is also called pressure cooker and pressure cooker, and is a cooker in kitchen. The pressure cooker can raise the physical phenomenon that the boiling point of liquid under higher air pressure exerts pressure on water, so that the water can reach higher temperature without boiling, thereby accelerating the efficiency of stewing food. Mainly comprises a cooker body, a cooker cover, a sealing rubber ring, an air discharge channel, a safety pressure limiting valve and the like.

As shown in fig. 1 and 2, a pressure-limiting valve for a pressure cooker, which is commonly available in the market, includes a valve cap, a valve body and a valve core, wherein the valve core is substantially rigidly connected to a main body of the pressure-limiting valve, when the pressure in the cooker reaches a working pressure, high-pressure gas in the cooker pushes the pressure-limiting valve away from an exhaust pipe to maintain the pressure in the cooker, the pressure-limiting valve tilts under the impact of the gas, which causes the valve core and an exhaust pipe opening to be dislocated to form only a point contact to generate a large gap (fig. 1 and 2 are valve cores of two different shapes, respectively), so that the sealing performance is reduced instantaneously, the pressure in the cooker is lower than the rated working pressure, boiling water in the cooker is easy to overflow from the exhaust pipe when the cooker.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an anti-toppling pressure limiting valve which is not easy to incline when in exhaust work, can ensure that a valve core is uniformly contacted with an exhaust pipe opening, and achieves the effects of improving the sealing property, ensuring the working pressure to be stable, preventing overflowing and the like.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an anti-toppling pressure limiting valve is used for an exhaust pipe of a high-pressure cooking appliance and comprises a valve cap, a valve body and a valve core, wherein the upper portion of the valve core penetrates through the valve body and is connected with the valve cap, a reset elastic body is arranged in a center hole in the top of the valve body, spherical grooves are respectively arranged in the middle of the upper bottom surface of the valve cap and the upper surface of the reset elastic body, the two spherical grooves are in continuous transition to form a spherical cavity, the upper portion of the valve core is spherical and can freely rotate and be located in the spherical cavity, the middle portion of the valve core is a cylinder. The upper part of the valve core is equivalent to the structure of a ball head, the valve cap, the valve body and the reset elastic body form a structure equivalent to a ball head seat, a ball body on the upper part of the valve core freely rotates in the spherical cavity, the valve core can swing at a limited angle, and the reset elastic body plays a role in resetting the valve core to an initial position after swinging.

Preferably, a thread structure is arranged between the inner wall of the bottom of the valve cap and the outer wall of the valve body, and the valve cap and the valve body are tightly connected through threads.

Preferably, the top surface of the valve body is provided with a ring groove, a sealing ring is arranged in the ring groove, and the valve body and the valve cap can extrude the ring groove to play a sealing role after assembly.

Preferably, the inner wall of the bottom of the valve body is provided with a ring groove, a clamp spring is arranged in the ring groove, and the clamp spring clamps the upper part of the exhaust pipe when the pressure limiting valve is jacked up, so that the pressure limiting valve is not easy to fall off during working.

Preferably, the contact surface between the valve body and the reset elastic body is a step structure which is abutted against each other, so that the reset elastic body is prevented from displacing, and the function of stable limit is achieved.

Preferably, the lower part of the valve core is a sphere or a cone.

Preferably, the inner wall of the pipe orifice of the exhaust pipe is a circular truncated cone inclined surface or a concave spherical curved surface, and the lower part of the valve core is in sealing contact with the pipe orifice of the exhaust pipe.

Preferably, the valve core is made of one of copper, stainless steel, ceramic or glass, and has good wear resistance.

Preferably, the reset elastomer is made of silicon rubber, has outstanding heat resistance, can work at high temperature for a long time, and keeps elasticity.

The invention has the beneficial effects that: the pressure limiting valve structure is not easy to incline when in exhaust work, can ensure the uniform contact of the valve core and the exhaust pipe opening, and achieves the effects of improving the sealing property, ensuring the stable working pressure, preventing water overflow and the like.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is another schematic structure of the prior art;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a partial cross-sectional view of the position of the reset elastomer in the present invention (hidden spool);

FIG. 5 is a cross-sectional view of the working state of the present invention;

fig. 6 is an enlarged schematic view at a in fig. 5.

The main elements in the figures are symbolically illustrated: 1. valve cap, 2, valve body, 3, case, 4, reset elastomer, 5, sealing washer, 6, jump ring, 7, blast pipe, 100, spherical cavity, 200, helicitic texture, 300, stair structure.

Detailed Description

The invention will be further illustrated by the following description and the accompanying drawings.

The implementation mode is as follows: as shown in fig. 3-4, the anti-toppling pressure limiting valve is used for an exhaust pipe 7 of a high-pressure cooking appliance and comprises a valve cap 1, a valve body 2 and a valve core 3. Wherein, a thread structure 200 is arranged between the inner wall of the bottom of the bonnet 1 and the outer wall of the valve body 2. In addition, the top surface of the valve body 2 is provided with a ring groove, a sealing ring 5 is arranged in the ring groove, the inner wall of the bottom of the valve body 2 is provided with a ring groove, and a clamp spring 6 is arranged in the ring groove.

The upper part of the valve core 3 is a sphere, the middle part is a column with smaller size, the lower part is a sphere or a cone, and the inner wall of the pipe orifice of the corresponding exhaust pipe 7 is set to be a circular truncated cone inclined plane or a concave spherical curved surface. A reset elastic body 4 is arranged in a middle hole in the top of the valve body 2, spherical grooves are respectively arranged in the middle of the upper bottom surface of the valve cap 1 and the upper surface of the reset elastic body 4, the two spherical grooves are in continuous transition to form a spherical cavity 100, a ball on the upper part of the valve core 3 is freely and rotatably positioned in the spherical cavity 100, and a middle hole of the reset elastic body 4 is sleeved on a middle cylinder. Here, the contact surface between the valve body 2 and the return elastic body 4 is a step structure 300 that is in contact with each other.

In addition, the valve core 3 is made of one of wear-resistant copper, stainless steel, ceramic or glass, and the reset elastomer 4 is made of high-temperature-resistant silicon rubber.

The assembling process is that the upper section ball of the valve core 3 passes through the hole of the valve body 2 and extends out of the upper part of the valve body 2, the reset elastic body 4 is sleeved into the upper section ball of the valve core 3, the middle hole is sleeved on the middle cylinder of the valve core 3 and then is embedded into the hole of the valve body 2, the reset elastic body is installed in place through the step structure 300, the sealing ring 5 is placed into the annular groove on the top surface of the valve body 2, the snap spring 6 is clamped into the groove of the valve body 2 to form an integral part, the integral part assembled by the valve body 2, the valve core 3, the reset elastic body 4, the sealing ring 5 and the snap spring 6 is screwed into the valve.

Referring to fig. 5-6, during the operation, when the pressure in the cooker reaches the working pressure, the pressure-limiting valve is lifted by the high-pressure gas in the cooker to exhaust the pressure in the cooker so as to keep the pressure in the cooker within the working pressure range, and at this time, the whole body (pressure-limiting valve main body) composed of the bonnet 1 and the valve body 2 keeps the vertical posture of the pressure-limiting valve main body unchanged under the action of gravity inertia and under the condition that the valve core 3 can swing relative to the pressure-limiting valve main body, the pressure-limiting valve main body only generates translation without inclination, and the valve core 3 swings at an angle relative to the pressure-limiting valve main body without dislocation with the exhaust pipe orifice to form a large gap as shown in fig.. The valve core 3 can extrude the reset elastic body 4 to deform when swinging (as the contact position of the right side of the cylinder in the middle of the valve core 3 and the reset elastic body 4 in fig. 6), and under the elastic action of the reset elastic body 4, the valve core 3 can return to the initial position coaxial with the pressure limiting valve main body, so as to drive the pressure limiting valve main body to return to the initial position. In this process, the pressure limiting valve is always in a vertical position so that the valve core 3 can be kept in intimate contact with the orifice of the exhaust pipe 7 with a uniform clearance.

The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and the present invention can be applied to similar products, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.