A new type of pressure cover fixing structure of an expansion kettle

Abstract

The utility model relates to the technical field of pressure cover fixing structure, particularly relate to a kind of pressure cover fixing structure of novel expansion kettle, it ingeniously combines the stability of mechanical elastic clamping, the convenience of unlocking, the durability of structural reinforcement, provide a kind of new connection solution scheme of excellent performance, user-friendly, safe and reliable for pressure kettle, with very high market application value and industry popularization prospect;Including spout and cover, spout is set on kettle body, cover is installed at spout top end;It further includes valve core, sealing ring, annular lock groove and elastic barb lock tongue, sealing ring is set on the inner side wall of spout, valve core is installed in spout interior, multiple annular lock grooves are all set on the outer side wall of spout, multiple elastic barb lock tongues are all set on the inner side wall of cover, and multiple annular lock grooves and multiple elastic barb lock tongues are positionally matched.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure cap fixing structure, and in particular to a novel pressure cap fixing structure for an expansion kettle. Background Technology

[0002] The pressure cap is an indispensable core safety component of modern kettles, and its core function is: 1. Pressure control and safety release: During the heating process, steam pressure is generated inside. The pressure cover automatically releases steam when the pressure reaches the preset safety threshold through the built-in pressure relief valve, preventing the kettle body from bursting due to excessive pressure and ensuring the personal safety of the user. 2. Heat preservation and energy saving: Effectively seals the spout, significantly reducing heat loss through the spout, improving heat preservation performance, and reducing energy consumption from repeated heating; 3. Anti-splash: Suppresses violent splashing of hot water during boiling, improving safety and cleanliness; 4. Dust and dirt prevention: Keep the water inside the kettle clean.

[0003] Limitations of existing water-side manifold / valve plate and water valve sealing methods: 1. Threaded type, cumbersome and time-consuming operation: opening and closing the cover requires multiple rotations, which is inconvenient, especially when water needs to be added or poured out quickly; 2. Thread wear and seal failure: Frequent tightening can easily lead to wear of plastic threads or corrosion of metal threads, resulting in poor sealing, water and air leakage, pressure control failure, reduced thermal insulation performance, and ultimately safety hazards. 3. Difficult alignment: Precise alignment of the thread start point is required, resulting in a poor user experience; 4. Poor sealing reliability: Usually, the sealing ring is tightened by the weight of the lid or a simple buckle. When the internal pressure increases or the pot is tilted, the seal is prone to failure due to slight lifting or deformation of the lid, which can lead to leakage or even abnormal pressure relief function. 5. Insufficient structural strength: The buckle itself and the corresponding spout structure are prone to breakage and deformation under long-term use or when subjected to great pressure, which may cause the lid to open unexpectedly or fail to close tightly. 6. Low durability: The buckling mechanism is prone to wear and aging, loses its elasticity, and reduces the locking force. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a novel pressure cap fixing structure for expansion kettles that ingeniously integrates the stability of mechanical elastic snap-fit, the convenience of unlocking, and the durability of structural reinforcement. It offers a high-performance, user-friendly, safe, and reliable new connection solution for pressure kettles, and has extremely high market application value and industrial promotion prospects.

[0005] This utility model discloses a novel pressure cap fixing structure for an expansion kettle, comprising a kettle spout and a cap body. The kettle spout is located on the kettle body, and the cap body is installed on the top of the kettle spout. It also includes a valve core, a sealing ring, an annular locking groove, and elastic barbed locking tongues. The sealing ring is located on the inner wall of the kettle spout, the valve core is installed inside the kettle spout, multiple annular locking grooves are located on the outer wall of the kettle spout, and multiple elastic barbed locking tongues are located on the inner wall of the cap body. The positions of the multiple annular locking grooves and the multiple elastic barbed locking tongues are matched. The cap body is aligned with the kettle spout and pressed vertically down to the bottom. Then, the cap body is rotated clockwise for assembly. The elastic barbed locking tongues on the cap body engage with the annular locking grooves, forming a tight mechanical engagement between the annular locking grooves and the elastic barbed locking tongues. This achieves a firm axial lock on the cap body, effectively resisting the tendency of internal steam pressure to lift the cap body. It achieves a powerful, frictionless rotary mechanical lock, completely solving the problems of traditional thread wear and insufficient locking force of snap-fit ​​mechanisms, providing a rigid foundation for high-pressure sealing.

[0006] Preferably, the elastic barbed latch includes a horizontal part and a circular part, the horizontal part is disposed on the inner side wall of the cover, and the circular part is disposed at the end of the horizontal part; The annular locking groove includes a guide member, a circular groove, and a guide ramp. The guide member is located on the outer wall of the spout, the circular groove is located on the side of the guide member, and the guide ramp is located on the inner wall of the guide member. When the lid is pressed down vertically to the bottom and then rotated clockwise for assembly, the circular member is inserted into the circular groove between the guide ramps. When the circular member passes through the guide ramp, it undergoes elastic inward deformation due to radial compression. After the circular member continues to move forward and enters the circular groove, it elastically and quickly returns to its radially outward reset, so that the circular member and the circular groove form a tight mechanical engagement. The effects and advantages of this utility model: 1. Revolutionary ease of operation: Achieve true "quick and easy opening and closing". Closing is as simple as a small angle for quick opening and closing, and opening is as simple as rotating the unlock button by 60°. The operation is extremely fast and effortless, and the user experience is far superior to the multi-turn super twist type, which is especially suitable for one-handed operation. 2. Excellent sealing reliability: Rigid locking guarantee and strong mechanical engagement force generated by elastic snap-fit ​​ensure that the cover does not move under internal high pressure, fundamentally eliminating sealing failure caused by slight lifting of the cover; 3. Exceptional structural strength and durability: Wear-free snap-fit, the elastic snap-fit ​​mainly relies on the elastic deformation and recovery of the material, avoiding continuous friction and wear caused by threaded engagement. The meshing surfaces of the annular locking groove and the elastic barbed locking tongue are subjected to pressure rather than shear friction, resulting in minimal wear. 3. Reinforced spout: The thickened and reinforced spout structure effectively resists locking force and internal pressure, making it less prone to deformation with long-term use and ensuring the durability of connection accuracy; High-temperature resistant materials: Key components are made of high-temperature resistant and anti-aging engineering plastics and rubber to ensure stable performance and significantly extended service life under repeated high-temperature steam environments; 4. Enhanced inherent safety: The robust connection ensures that the pressure relief valve is always in the correct working position and state, the pressure control function is reliable, greatly reduces the risk of overpressure, and avoids accidental blow-off of the cover or hot water splashing due to connection failure such as stripped threads or broken clips. 5. Easy maintenance: The main sealing ring and the silicone plug of the pressure relief valve are usually designed as replaceable modules, resulting in low maintenance costs. The snap-fit ​​structure itself requires almost no maintenance.

[0007] Preferably, the elastic barbed latch is integrally injection molded from engineering plastic PA66-GF30, and has good elastic recovery capability.

[0008] Preferably, the spout, lid, annular locking groove, and elastic barbed locking tongue are all made of high-temperature resistant materials; ensuring stable performance and significantly extended lifespan under repeated high-temperature steam environments.

[0009] Preferably, it also includes a guide assembly angle, which is set at the end of the guide member; to improve the guiding and installation effect of the circular part.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: when the lid is aligned with the spout and pressed vertically to the bottom, the lid is rotated clockwise for assembly. The elastic barbed locking tongue on the lid is inserted into the annular locking groove, so that the annular locking groove and the elastic barbed locking tongue form a tight mechanical engagement, which realizes a firm axial lock on the lid, effectively resists the tendency of the internal steam pressure to lift the lid, and achieves a powerful, frictionless rotary mechanical lock, completely solving the problems of traditional thread wear and insufficient buckle locking force, and providing a rigid foundation for high-pressure sealing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is a partial isometric structural diagram of the connection between the spout and the lid, etc. Figure 3 This is a partial isometric structural diagram of the connection between the spout and the annular locking groove, etc. Figure 4 This is a partial isometric structural diagram showing the connection between the cover and the transverse components, etc. Figure 5 This is a partial isometric structural diagram showing the connection between the guide component and the circular groove, etc.

[0012] The following are labels in the attached diagram: 1. Spout; 2. Lid; 3. Valve core; 4. Sealing ring; 5. Annular locking groove; 6. Elastic barbed locking tongue; 7. Horizontal component; 8. Circular component; 9. Guide component; 10. Circular groove; 11. Guide slope; 12. Guide assembly angle. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0014] Example 1 like Figures 1 to 5 As shown, this utility model discloses a novel pressure cap fixing structure for an expansion kettle, comprising a kettle spout 1 and a cap body 2. The kettle spout 1 is disposed on the kettle body, and the cap body 2 is installed on the top of the kettle spout 1. It also includes a valve core 3, a sealing ring 4, an annular locking groove 5, and an elastic barbed locking tongue 6. The sealing ring 4 is disposed on the inner wall of the kettle spout 1, the valve core 3 is installed inside the kettle spout 1, multiple sets of annular locking grooves 5 are disposed on the outer wall of the kettle spout 1, and multiple sets of elastic barbed locking tongues 6 are disposed on the inner wall of the cap body 2. The positions of the multiple sets of annular locking grooves 5 and the multiple sets of elastic barbed locking tongues 6 are matched. like Figure 5 As shown, the elastic barbed latch 6 includes a transverse part 7 and a circular part 8. The transverse part 7 is disposed on the inner side wall of the cover 2, and the circular part 8 is disposed at the end of the transverse part 7. The annular locking groove 5 includes a guide member 9, a circular groove 10, and a guide slope 11. The guide member 9 is disposed on the outer wall of the spout 1, the circular groove 10 is disposed on the side of the guide member 9, and the guide slope 11 is disposed on the inner wall of the guide member 9. In this embodiment, the lid 2 is aligned with the spout 1 and pressed vertically down to the bottom. Then, the lid 2 is rotated clockwise for assembly. The elastic barbed locking tongue 6 on the lid 2 is inserted into the annular locking groove 5, so that the annular locking groove 5 and the elastic barbed locking tongue 6 form a tight mechanical engagement, which realizes a firm axial lock on the lid 2, effectively resisting the tendency of the internal steam pressure to lift the lid 2, realizing a powerful, frictionless rotational mechanical lock, completely solving the problems of traditional thread wear and insufficient buckle locking force, and providing a rigid foundation for high-pressure sealing.

[0015] Example 2 Based on Example 1, such as Figure 3 As shown, the present invention discloses a novel pressure cap fixing structure for an expansion kettle, wherein the elastic barbed locking tongue 6 is integrally injection molded from engineering plastic PA66-GF30. like Figure 3As shown, the spout 1, lid 2, annular locking groove 5, and elastic barbed locking tongue 6 are all made of high-temperature resistant materials; like Figure 5 As shown, it also includes a guide assembly angle 12, which is disposed at the end of the guide member 9; In this embodiment, when the cover 2 is pressed down vertically to the bottom and then rotated clockwise for assembly, the circular part 8 is inserted into the circular groove 10 between the guide slope 11. When the circular part 8 passes through the guide slope 11, it is subjected to radial compression and undergoes elastic inward deformation. After the circular part 8 continues to move forward and enters the circular groove 10, the circular part 8 elastically and quickly returns to its radially outward reset, so that the circular part 8 and the circular groove 10 form a tight mechanical engagement. The effects and advantages of this utility model: 1. Revolutionary ease of operation: Achieve true "quick and easy opening and closing". Closing is as simple as a small angle for quick opening and closing, and opening is as simple as rotating the unlock button by 60°. The operation is extremely fast and effortless, and the user experience is far superior to the multi-turn super twist type, which is especially suitable for one-handed operation. 2. Excellent sealing reliability: Rigid locking guarantee and strong mechanical engagement force generated by elastic snap-fit ​​ensure that the cover 2 remains motionless under internal high pressure, fundamentally eliminating sealing failure caused by slight lifting of the cover 2. 3. Exceptional structural strength and durability: Wear-free snap-fit, the elastic snap-fit ​​mainly relies on the elastic deformation and recovery of the material, avoiding continuous friction and wear caused by thread engagement. The meshing surfaces of the annular locking groove 5 and the elastic barbed locking tongue 6 are subjected to pressure rather than shear friction, resulting in minimal wear. 3. Reinforced spout: The thickened and reinforced spout structure effectively resists locking force and internal pressure, making it less prone to deformation with long-term use and ensuring the durability of connection accuracy; High-temperature resistant materials: Key components are made of high-temperature resistant and anti-aging engineering plastics and rubber to ensure stable performance and significantly extended service life under repeated high-temperature steam environments; 4. Enhanced inherent safety: The robust connection ensures that the pressure relief valve is always in the correct working position and state, the pressure control function is reliable, greatly reduces the risk of overpressure, and avoids accidental blow-off of the cover or hot water splashing due to connection failure such as stripped threads or broken clips. 5. Easy maintenance: The main sealing ring and the silicone plug of the pressure relief valve are usually designed as replaceable modules, resulting in low maintenance costs. The snap-fit ​​structure itself requires almost no maintenance and has good elastic recovery capability.

[0016] This utility model discloses a novel pressure cap fixing structure for an expansion kettle. During operation, when the cap 2 is pressed vertically to the bottom and then rotated clockwise for assembly, the circular part 8 is inserted into the circular groove 10 between the guide inclined surfaces 11. As the circular part 8 passes through the guide inclined surfaces 11, it undergoes elastic inward deformation due to radial compression. After the circular part 8 continues to move forward and enters the circular groove 10, it elastically and quickly returns to its radially outward state, forming a tight mechanical engagement between the circular part 8 and the circular groove 10, thus achieving a firm axial lock on the cap 2.

[0017] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel pressure cap fixing structure for an expansion kettle, comprising a spout (1) and a cap (2), wherein the spout (1) is disposed on the kettle body, and the cap (2) is mounted on the top of the spout (1); characterized in that, It also includes a valve core (3), a sealing ring (4), an annular locking groove (5) and an elastic barbed locking tongue (6). The sealing ring (4) is set on the inner wall of the spout (1), the valve core (3) is installed inside the spout (1), multiple annular locking grooves (5) are set on the outer wall of the spout (1), and multiple elastic barbed locking tongues (6) are set on the inner wall of the lid (2). The positions of the multiple annular locking grooves (5) and the multiple elastic barbed locking tongues (6) are matched.

2. The novel pressure cap fixing structure for an expansion kettle as described in claim 1, characterized in that, The elastic barbed latch (6) includes a transverse part (7) and a circular part (8). The transverse part (7) is disposed on the inner side wall of the cover (2), and the circular part (8) is disposed at the end of the transverse part (7). The annular locking groove (5) includes a guide (9), a circular groove (10) and a guide slope (11). The guide (9) is located on the outer wall of the spout (1), the circular groove (10) is located on the side of the guide (9), and the guide slope (11) is located on the inner wall of the guide (9).

3. The novel pressure cap fixing structure for an expansion kettle as described in claim 1, characterized in that, The elastic barbed latch (6) is integrally injection molded from engineering plastic PA66-GF30.

4. The novel pressure cap fixing structure for an expansion kettle as described in claim 1, characterized in that, The spout (1), lid (2), annular locking groove (5), and elastic barbed locking tongue (6) are all made of high-temperature resistant materials.

5. The novel pressure cap fixing structure for an expansion kettle as described in claim 2, characterized in that, It also includes a guide assembly chamfer (12), which is set at the end of the guide (9).

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