Anti-falling pressure valve body structure

Abstract

The utility model provides an anti-disengaging pressure valve body structure which comprises a valve column, a valve bonnet and an anti-disengaging piece. A thread is arranged on the outer surface of a column body of the valve column, a locking cavity is formed in the valve bonnet, a spiral groove matched with the thread is formed in the cavity wall of the locking cavity, and the valve bonnet can cover the valve column in a screwing mode through matching of the spiral groove and the thread; the anti-disengaging piece is arranged on a column body of the valve column in a sleeved mode, and when the valve bonnet covers the valve column in a screwed mode, the anti-disengaging piece is extruded between the valve bonnet and the valve column. According to the pressure relief valve, the anti-disengaging piece is additionally arranged on the column body of the valve column, when the valve cap covers the valve column in a screwed mode, the valve cap can extrude the anti-disengaging piece, the friction force of the anti-disengaging piece is used for increasing the unscrewing resistance of the valve cap and the valve column, and the valve cap is prevented from being disengaged from the valve column in the pressure relief process.

Description

Technical Field

[0001] This utility model belongs to the field of pressure valve technology, and in particular relates to an anti-disengagement pressure valve body structure. Background Technology

[0002] Pressure cookers are a common type of cookware, often used for outdoor cooking or kitchen cooking. They work by utilizing the physical phenomenon that the boiling point of a liquid increases under higher steam pressure, allowing water to reach a higher temperature without boiling, thus speeding up the cooking process. When the steam pressure inside the pot reaches a certain value, it will open the pressure valve on the lid to release the steam.

[0003] The valve body structure of a pressure valve generally includes a valve stem, a valve core, and a valve cap. The valve stem is fixedly connected to the pot lid, and the valve cap confines the valve core within the valve stem. To facilitate the replacement of the valve core, the valve cap and valve stem are usually made into a detachable structure. However, during the steam exhaust process, the steam pressure will come out from the valve stem and impact the inside of the valve cap, and then dissipate from the steam outlet of the valve cap. Over time, under the impact of the steam pressure, the valve cap and valve stem can easily detach. Utility Model Content

[0004] In response to the problems raised in the background art, this utility model proposes an anti-detachment pressure valve body structure, in which an anti-detachment component is added to the valve column. When the valve cap is screwed onto the valve column, the valve cap will squeeze the anti-detachment component, and the friction of the anti-detachment component will increase the resistance to the valve cap and valve column being loosened, thus preventing the valve cap from separating from the valve column when pressure is released.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A pressure valve body structure for preventing detachment includes a valve stem, a valve cap, and an anti-detachment component;

[0007] The outer surface of the valve stem is provided with threads, and the inside of the valve cap is provided with a locking cavity. The wall of the locking cavity is provided with a spiral groove that matches the threads. The valve cap can be screwed onto the valve stem through the cooperation of the spiral groove and the threads.

[0008] The anti-detachment component is sleeved on the column of the valve column. When the valve cap is screwed onto the valve column, the anti-detachment component is squeezed between the valve cap and the valve column.

[0009] Preferably, the valve stem has an annular groove, and the anti-detachment component is installed in the annular groove.

[0010] Preferably, the anti-detachment component is an annular anti-detachment rubber ring;

[0011] After the anti-detachment rubber ring is fitted into the annular groove, the outer ring of the anti-detachment rubber ring protrudes from the opening of the annular groove.

[0012] Preferably, the wall of the locking cavity is provided with an anti-wear surface. When the valve cap is screwed onto the valve column, the anti-wear surface squeezes and adheres to the anti-detachment rubber ring.

[0013] Preferably, it also includes a valve core;

[0014] The valve stem has a steam passage that runs through both ends of the stem. One end of the steam passage has a steam inlet and the other end has a steam outlet.

[0015] The valve cap is provided with a steam dissipation port, and a steam dissipation space is left between the steam dissipation port and the steam outlet. The valve core is located in the steam dissipation space and abuts against the steam outlet.

[0016] Preferably, the end where the steam outlet is located is recessed towards the steam passage to form a receiving cavity, the wall of the receiving cavity is inclined relative to the steam passage, and the steam outlet is located at the bottom of the receiving cavity so that the receiving cavity is connected to the steam passage;

[0017] The valve core has a cone at its abutting part, and the cone surface of the cone abuts against the wall of the receiving cavity so that the cone can be inserted into the receiving cavity and movably seal the steam passage.

[0018] The spring is installed in the mounting part of the valve core;

[0019] In the steam outlet state, the steam pressure enters the steam outlet passage and pushes up the valve core to open the steam outlet passage so that the steam outlet passage connects to the steam dissipation space. The steam pressure forms a spiral vortex under the action of the spring. The spiral vortex travels back and forth in the steam dissipation space and overflows from the steam dissipation port.

[0020] Preferably, the cone includes a cone body and a cone tip;

[0021] The conical surface corresponding to the tip of the cone abuts against the wall surface corresponding to the lower part of the receiving cavity, and the tip of the cone is inserted into the steam passage;

[0022] A gap is formed between the conical surface corresponding to the conical part and the wall surface corresponding to the upper part of the receiving cavity.

[0023] Preferably, one end of the spring is fixed to the mounting portion of the valve core, and the other end abuts against the steam outlet.

[0024] Preferably, the mounting part includes a snap-fit ​​block, one end of the spring is fitted into the snap-fit ​​block, and the middle part of the snap-fit ​​block protrudes outward in a circumferential direction to hold the spring in place.

[0025] Preferably, the outer surface of the valve cap is provided with anti-slip texture.

[0026] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0027] This technical solution adds an anti-detachment component to the valve stem. When the valve cap is screwed onto the valve stem, the valve cap will squeeze the anti-detachment component. The friction of the anti-detachment component increases the resistance to loosening the valve cap and valve stem, preventing the valve cap from separating from the valve stem during pressure relief. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the valve column of this utility model;

[0029] Figure 2 This is a cross-sectional structural diagram of the valve cap of this utility model;

[0030] Figure 3 This is a schematic diagram of the pressure valve of this utility model;

[0031] Figure 4 This is a cross-sectional schematic diagram of the pressure valve of this utility model;

[0032] Figure 5 This is an exploded schematic diagram of the pressure valve of this utility model.

[0033] 1. Valve column, 11. Steam passage, 12. Steam inlet, 13. Steam outlet, 14. Receiving cavity, 15. Thread, 16. Annular groove, 2. Valve cap, 21. Steam dissipation space, 22. Steam dissipation port, 23. Locking cavity, 24. Spiral groove, 25. Anti-wear surface, 26. Anti-slip texture, 3. Valve core, 31. Cone body, 311. Cone tip, 312. Snap-fit ​​block, 32. Spring, 4. Anti-detachment rubber ring, 5. Detailed Implementation

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In existing pressure valve structures, during the exhaust process, steam pressure exits from the valve core, impacts the inside of the valve cap, and then dissipates through the valve cap's vent. Over time, under the impact of steam pressure, the valve cap and valve core are prone to detachment. To solve this problem, such as... Figures 1 to 5 As shown, this application proposes an anti-disengagement pressure valve body structure, including a valve stem 1, a valve cap 2, and an anti-disengagement component;

[0039] The outer surface of the valve stem 1 is provided with a thread 15, and the valve cap 2 is provided with a locking cavity 23. The cavity wall of the locking cavity 23 is provided with a spiral groove 24 that matches the thread 15. The valve cap 2 can screw on the valve stem 1 through the cooperation of the spiral groove 24 and the thread 15.

[0040] The anti-detachment component is sleeved on the column of the valve column 1. When the valve cap 2 screws onto the valve column 1, the anti-detachment component is squeezed between the valve cap 2 and the valve column 1.

[0041] In this embodiment, because steam pressure is continuously discharged from the steam outlet 22 of the steam outlet space 21 during depressurization, the steam pressure has a large impact on the valve cap 2, which can easily cause the valve cap 2 to detach from the valve column 1. In order to solve this problem, this application designs the outer surface of the valve column 1 as a thread 15 structure and designs the cavity wall of the locking cavity 23 of the valve cap 2 as a spiral groove 24, so that the valve cap 2 can tighten the valve column 1 to achieve the fixation between the two, while also achieving the effect of detachable valve cap 2 and valve column 1.

[0042] Furthermore, the cooperation of thread 15 and spiral groove 24 alone is insufficient to secure the connection between valve cap 2 and valve column 1. Therefore, in this embodiment, an anti-detachment component is added to the column body of valve column 1. When valve cap 2 screws onto valve column 1, valve cap 2 will squeeze the anti-detachment component, using the friction of the anti-detachment component to increase the resistance to loosening valve cap 2 and valve column 1.

[0043] Preferably, the valve stem 1 has an annular groove 16, and the anti-detachment component is installed in the annular groove 16.

[0044] In this embodiment, in order to install the anti-detachment component, an annular groove 16 is formed in the column of the valve column 1. The annular groove 16 is recessed inward to form a channel, so that the anti-detachment component can be accommodated in the channel to prevent the anti-detachment component from detaching from the valve column 1.

[0045] Preferably, the anti-detachment component is an annular anti-detachment rubber ring 5;

[0046] After the anti-detachment rubber ring 5 is fitted into the annular groove 16, the outer ring of the anti-detachment rubber ring 5 protrudes from the opening of the annular groove 16.

[0047] In this embodiment, the anti-detachment component is designed as an annular anti-detachment ring 5 with a certain elasticity. The outer ring of the anti-detachment ring 5 protrudes from the groove of the annular groove 16, so that when the valve cap 2 is screwed onto the valve column 1, the valve cap 2 can squeeze the outer ring of the anti-detachment ring 5. By utilizing its elasticity, interference fit, and the friction of the anti-detachment ring 5, the resistance of the valve cap 2 to detach from the valve column 1 is increased.

[0048] Preferably, the wall of the locking cavity 23 is provided with an anti-wear surface 25. When the valve cap 2 screws onto the valve column 1, the anti-wear surface 25 presses against and adheres to the anti-detachment rubber ring 5.

[0049] In this embodiment, the wall surface of the locking cavity 23 is provided with a spiral groove 24 for engaging with the thread 15 of the valve column 1. However, during the capping process, if the spiral groove 24 comes into contact with the anti-detachment ring 5 and is subjected to the force of screwing in and out, the spiral groove 24 will damage the anti-detachment ring 5, causing wear to occur on the anti-detachment ring 5. Therefore, this application provides an anti-wear surface 25 on the wall surface of the locking cavity 23, and the anti-wear surface 25 is provided corresponding to the anti-detachment ring 5.

[0050] Preferably, it also includes valve core 3;

[0051] The valve column 1 has a steam passage 11 that runs through both ends of the column body. One end of the steam passage 11 has a steam inlet 12 and the other end has a steam outlet 13.

[0052] The valve cap 2 is provided with a steam dissipation port 22, and a steam dissipation space 21 is left between the steam dissipation port 22 and the steam outlet 13. The valve core 3 is located in the steam dissipation space 21 and abuts against the steam outlet 13.

[0053] Preferably, the end of the steam outlet 13 is recessed towards the steam passage 11 to form a receiving cavity 14. The wall of the receiving cavity 14 is inclined relative to the steam passage 11, and the steam outlet 13 is located at the bottom of the receiving cavity 14 so that the receiving cavity 14 is connected to the steam passage 11.

[0054] The valve core 3 is provided with a cone 31 at the abutting part. The cone surface of the cone 31 abuts against the wall of the receiving cavity 14 so that the cone 31 is inserted into the receiving cavity 14 and can movably seal the steam passage 11.

[0055] The spring 4 is installed on the mounting part of the valve core 3;

[0056] In the steam output state, the steam pressure enters the steam passage and pushes up the valve core 3 to open the steam passage 11 so that the steam passage 11 connects to the steam dissipation space 21. The steam pressure forms a spiral vortex under the action of the spring 4. The spiral vortex travels back and forth in the steam dissipation space 21 and overflows from the steam dissipation port 22.

[0057] In this embodiment, the pressure valve consists of three components: a valve stem 1, a valve cap 2, and a valve core 3. The valve stem 1 is a cylindrical structure with a steam inlet 12 and a steam outlet 13 at each end. A steam passage 11 is formed between the steam inlet 12 and the steam outlet 13, i.e., inside the stem. One end of the steam inlet 12 is located inside the pot, and the other end of the steam outlet 13 is located outside the pot. During cooking, the pressure valve cannot release steam until the pressure inside the pot reaches a certain level, thus preventing pressure buildup. Insufficient pressure prevents food from being cooked. Therefore, in this embodiment, a receiving cavity 14 is provided at one end of the steam outlet 13 of the valve column 1, and the valve core 3 is placed in the receiving cavity 14 to seal the steam passage 11. Only when the pressure inside the pot reaches the critical value, the steam pressure pushes the valve core 3 upward from the steam inlet 12 along the steam passage 11, opening the steam outlet 13, so that the steam passage 11 is connected to the steam dissipation space 21, and the steam pressure is released from the steam dissipation port 22 of the steam dissipation space 21 to the outside of the pot.

[0058] Furthermore, in this example, a receiving cavity 14 is formed by recessing one end of the valve stem 1 towards the steam passage 11. The wall of the receiving cavity 14 is designed as an inclined surface to match the conical structure of the cone 31 of the valve core 3, so that the cone 31 of the valve core 3 can be embedded in the receiving cavity 14 and block the steam passage 11. At the same time, because the wall of the receiving cavity 14 is inclined and the cone 31 of the valve core 3 has a taper, when the steam pressure pushes up the valve core 3, the steam will enter the steam dispersion space 21 at a certain angle along the conical surface and the inclined wall of the receiving cavity 14. As the steam pressure continues to increase, the gap between the valve core 3 and the receiving cavity 14 increases, more and more steam enters the steam dispersion space 21 and the angle of entry becomes larger. The steam begins to diffuse in four directions with the taper of the cone 31, forming an airflow in the steam outlet 13.

[0059] When the airflow from the steam outlet 13 enters the steam dissipation space 21, the presence of the spring 4 causes the airflow to form a spiral vortex under the spiral structure of the spring 4, rising within the steam dissipation space 21. Because the steam dissipation outlet 22 is located at the top of the steam dissipation space 21, the vortex needs to rise continuously along the steam dissipation space 21 and reach the top steam dissipation outlet 22 before it can be depressurized and released to the outside. Therefore, to a certain extent, the time for the gas to depressurize and overflow is delayed, allowing the fragrant steam pressure to remain for a longer period. Because the steam dissipation outlet 22 is located at the top, the vortex can only overflow from the top. In addition, the presence of the spring 4 occupies part of the space in the steam dissipation space 21, resulting in only a portion of the vortex overflowing from the steam dissipation outlet 22. The remaining portion of the vortex will touch the top and fall back. The falling vortex will mix with the next wave of steam pressure and rise again to overflow. This cycle repeats, causing the vortex to travel back and forth within the steam dissipation space 21, making the fragrance last longer.

[0060] Furthermore, due to the presence of the cone 31, the inclined wall of the receiving cavity 14, and the spring 4, the steam pressure in the steam dissipation space 21 will form a cyclone. The rotational force caused by the rotation of the cyclone will loosen the valve cap 2 and the valve column 1. Over time, this will cause the valve cap 2 and the valve column 1 to fall off. Therefore, the design of the anti-derailment ring 5 in this application is also to solve the defects of the above-mentioned structure in this solution.

[0061] Furthermore, in this embodiment, the vapor diffuser 22 is located on the top of the valve cap 2, and there is only one. Compared with the existing case where the vapor diffuser 22 is located on both sides of the valve cap 2 and there are multiple diffusers, a single vapor diffuser 22 can slow down the vapor diffusion speed, so that the aroma can be retained for a longer time.

[0062] Preferably, the cone 31 includes a cone body 311 and a cone tip 312;

[0063] The conical surface corresponding to the cone tip 312 abuts against the wall surface corresponding to the lower part of the receiving cavity 14, and the cone tip 312 is inserted into the steam passage 11;

[0064] A gap is formed between the conical surface corresponding to the conical part 311 and the wall surface corresponding to the upper part of the receiving cavity 14.

[0065] In this embodiment, the cone tip 312 extends from the steam outlet 13 into the steam passage 11 to seal the steam passage 11, so as to prevent pressure leakage when the pressure inside the pot is insufficient, thus preventing the food from being cooked.

[0066] Furthermore, the conical surface of the cone 311 and the upper wall of the receiving cavity 14 are not completely fitted together, but rather form a certain gap. From the cross-sectional view, the straight lines containing the two form an angle, and the intersection of the angle is the contact point between the cone tip 312 and the steam outlet 13. The reason for this design is that after the cone tip 312 is lifted, the steam pressure can enter the steam dispersion space 21 along the gap, and the entry angle is constantly increasing. Combined with the conical surface of the cone tip 312 and the inclined wall of the receiving cavity 14, a 360-degree omnidirectional diffusion can be formed. If the inclined angle of the wall of the receiving cavity 14 is designed to fit the conical surface of the cone 31, the cone 31 needs to be completely lifted out of the receiving cavity 14 to release steam smoothly, which will also result in too small a steam output and failure to form a cyclone.

[0067] Preferably, one end of the spring 4 is fixed to the mounting part of the valve core 3, and the other end abuts against the steam outlet 22.

[0068] In one embodiment of this application, one end of the spring 4 is fixed to the mounting part of the valve core 3, and the other end abuts against the steam outlet 22. Under this design, the steam pressure will push up the valve core 3, causing the valve core 3 to squeeze the spring. When the steam pressure increases, the force of the valve core 3 squeezing the spring 4 will increase, and the valve core 3 will move away from the receiving cavity 14. When the steam pressure decreases, the force of the valve core 3 squeezing the spring 4 will decrease, and at the same time, due to the reaction force of the spring 4, the valve core 3 will move closer to the receiving cavity 14. Meanwhile, because the spring 4 abuts against the steam outlet 22, when the vortex is about to overflow from the steam outlet 22, the spring 4 will slow down the speed of the vortex overflow, making the fragrance last longer.

[0069] Preferably, the mounting part includes a snap-fit ​​block 32, one end of the spring 4 is fitted into the snap-fit ​​block 32, and the middle part of the snap-fit ​​block 32 protrudes outward in a circumferential direction to snap the spring 4.

[0070] In one embodiment of this application, the connection between the spring 4 and the valve core 3 can be as follows: a snap-fit ​​block 32 is designed in the mounting part of the valve core 3, the spring 4 is fitted into the snap-fit ​​block 32, and the spring 4 is snapped in place by the circumferential protrusion in the middle of the snap-fit ​​block 32, so as to prevent the spring 4 from separating from the valve core 3.

[0071] Preferably, the outer surface of the valve cap 2 is provided with anti-slip texture 26.

[0072] In this embodiment, anti-slip texture 26 is provided on the outer surface of the valve cap 2 to increase friction, making it easier to screw the valve cap 2 onto the valve stem 1.

[0073] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A pressure valve body structure for preventing disconnection, characterized in that: Includes valve stem, valve cap, and anti-detachment components; The outer surface of the valve stem is provided with threads, and the inside of the valve cap is provided with a locking cavity. The wall of the locking cavity is provided with a spiral groove that matches the threads. The valve cap can be screwed onto the valve stem through the cooperation of the spiral groove and the threads. The anti-detachment component is sleeved on the column of the valve column. When the valve cap is screwed onto the valve column, the anti-detachment component is squeezed between the valve cap and the valve column.

2. The anti-disengagement pressure valve body structure according to claim 1, characterized in that: The valve stem has an annular groove, and the anti-detachment component is installed in the annular groove.

3. The anti-disengagement pressure valve body structure according to claim 2, characterized in that: The anti-detachment component is a ring-shaped anti-detachment rubber ring; After the anti-detachment rubber ring is fitted into the annular groove, the outer ring of the anti-detachment rubber ring protrudes from the opening of the annular groove.

4. The anti-disengagement pressure valve body structure according to claim 3, characterized in that: The wall of the locking cavity is provided with an anti-wear surface. When the valve cap is screwed onto the valve column, the anti-wear surface squeezes and adheres to the anti-detachment rubber ring.

5. The anti-disengagement pressure valve body structure according to claim 1, characterized in that: It also includes the valve core; The valve stem has a steam passage that runs through both ends of the stem. One end of the steam passage has a steam inlet and the other end has a steam outlet. The valve cap is provided with a steam dissipation port, and a steam dissipation space is left between the steam dissipation port and the steam outlet. The valve core is located in the steam dissipation space and abuts against the steam outlet.

6. The anti-disengagement pressure valve body structure according to claim 5, characterized in that: The end where the steam outlet is located is recessed towards the steam passage to form a receiving cavity. The wall of the receiving cavity is inclined relative to the steam passage, and the steam outlet is located at the bottom of the receiving cavity so that the receiving cavity is connected to the steam passage. The valve core has a cone at its abutting part, and the cone surface of the cone abuts against the wall of the receiving cavity so that the cone can be inserted into the receiving cavity and movably seal the steam passage. A spring is installed in the mounting part of the valve core; In the steam outlet state, the steam pressure enters the steam outlet passage and pushes up the valve core to open the steam outlet passage so that the steam outlet passage connects to the steam dissipation space. The steam pressure forms a spiral vortex under the action of the spring. The spiral vortex travels back and forth in the steam dissipation space and overflows from the steam dissipation port.

7. The anti-disengagement pressure valve body structure according to claim 6, characterized in that: The cone includes a cone body and a cone tip; The conical surface corresponding to the tip of the cone abuts against the wall surface corresponding to the lower part of the receiving cavity, and the tip of the cone is inserted into the steam passage; A gap is formed between the conical surface corresponding to the conical part and the wall surface corresponding to the upper part of the receiving cavity.

8. The anti-disengagement pressure valve body structure according to claim 6, characterized in that: One end of the spring is fixed to the mounting part of the valve core, and the other end abuts against the steam outlet.

9. The anti-disengagement pressure valve body structure according to claim 6, characterized in that: The mounting part includes a snap-fit ​​block, one end of the spring is fitted into the snap-fit ​​block, and the middle part of the snap-fit ​​block protrudes outward in a circumferential direction to hold the spring in place.

10. The anti-disengagement pressure valve body structure according to claim 1, characterized in that: The outer surface of the valve cap is provided with anti-slip texture.

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