Small plastic aerosol pressure container with quick release structure

Abstract

The utility model discloses a small plastic aerosol pressure vessel with a quick release structure, which relates to the technical field of pressure vessels and comprises a vessel main body and a quick release connector, the vessel main body is in threaded connection with the quick release connector, a pressure relief valve is integrated in a central through hole of the quick release connector, the bottom of the quick release connector is provided with an internal thread connecting end, and the quick release connector is connected with the pressure relief valve. At least two first limiting protruding blocks are evenly distributed in the top center through hole in the circumferential direction. The pressure relief valve comprises a liquid inlet pipeline, a buffer cavity, a limiting sleeve, a first sealing ring, a second sealing ring and a pressing key which are arranged in the axial direction, one end of the buffer cavity communicates with the liquid inlet pipeline, the other end of the buffer cavity communicates with the top of the internal thread connecting end, and the bottom of the pressing key is elastically connected with the bottom of the buffer cavity through a spring; the limiting sleeve sleeves the inner wall of the buffer cavity, the outer portion of the limiting sleeve is sealed with the buffer cavity through a first sealing ring, and the inner portion of the limiting sleeve is sealed with the pressing key through a second sealing ring. And rapid mounting / dismounting is achieved through the rapid dismounting structure of the integrated pressure relief valve, and use convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure vessel technical field more specifically relates to a small pressure container of aerosol plastic with quick release structure. BACKGROUND

[0002] The aerosol pressure container is a portable storage device widely used in daily chemical, medical, industrial and other fields, and its core function is to realize the rapid release of liquid or aerosolized substances through internal pressure. The traditional aerosol container usually adopts an integrated structure or a fixed connection mode, and the container body and the valve assembly are connected through threads or welding. However, there are the following technical defects: first, in the quick release maintenance and replacement scene, the traditional threaded connection structure needs to be rotated multiple times, which is low in disassembly efficiency. Especially in emergency situations (such as pressure anomaly needs to be quickly disconnected), the response speed of the existing structure is difficult to meet the safety requirements. Although some quick release designs use buckle type connection, they lack axial limiting and pressure self-locking mechanism, and are prone to accidental disconnection in high pressure environment, which poses a safety hazard. Secondly, the pressure release valve is usually independently arranged in the container body or the connecting pipeline, resulting in scattered structure and large space occupation. In addition, the existing pressure release valve usually adopts a vertical pressing type one-way valve structure, and the sealing surface is easily deformed under the action of spring pre-tightening force for a long time. SUMMARY

[0003] The utility model discloses a small pressure container of aerosol plastic with quick release structure.

[0004] The utility model discloses a technical scheme as follows: a small pressure container of aerosol plastic with quick release structure, including container body and quick release type connector, the container body is connected with quick release type connector through screw thread, the center through -hole of quick release type connector is integrally provided with pressure release valve, and its bottom is equipped with internal thread connection end, and the top center through -hole is uniformly distributed with at least two first limit lug; The pressure release valve includes the liquid inlet pipeline that sets up along the axial direction, the buffer cavity, the limit cover, the first sealing ring, the second sealing ring and the press key, one end of the buffer cavity communicates with the liquid inlet pipeline, and the other end communicates with the top of internal thread connection end, and the press key bottom is elastically connected with the buffer cavity bottom through the spring;The press key top outer periphery is equipped with the second limit lug that corresponds with the number of first limit lug, and the second limit lug and first limit lug form the axial limiting structure of rotatable joint;The limit cover is sleeved in the inner wall of buffer cavity, and its outside forms the seal with buffer cavity through first sealing ring, and its inside forms the seal with press key through second sealing ring.

[0005] The quick release structure of the integrated pressure release valve realizes quick installation / dismounting, improves the convenience of use, the axial limiting protrusion design ensures the stability of connection and prevents falling caused by misoperation, the double sealing rings, the first and second layered sealing, improve the air tightness between the buffer cavity and the external environment and the pressing key, the spring elastically connects the pressing key, realizes automatic pressure reset, and prolongs the service life of the valve.

[0006] Preferably, the contact surfaces of the first limiting protrusion and the second limiting protrusion are provided with guide inclined surfaces, and the number of the guide inclined surfaces of the first limiting protrusion and the second limiting protrusion is equal and circumferentially correspondingly distributed.

[0007] Preferably, the spring is a tower-shaped coil spring, the bottom fixed end of the spring is provided with a spring positioning column, and the top is embedded in a spring accommodating groove arranged at the bottom of the pressing key.

[0008] Preferably, the top surface of the pressing key is provided with an anti-skid pattern, and the diameter of the end portion is greater than the inner diameter of the central through hole to form a pressing limiting step.

[0009] Preferably, a trapezoidal transition fit structure is adopted at the connection between the liquid inlet pipeline and the buffer cavity.

[0010] Preferably, the quick release connector and the container body are integrally injection molded by using a plastic material, and the components of the pressure release valve are assembled in the central through hole through interference fit.

[0011] Preferably, the first sealing ring is an elastic rubber sealing ring with a circular cross section.

[0012] Preferably, the top of the container body is provided with an annular outer threaded open end, and the bottom is provided with an inner concave pattern reinforcing rib.

[0013] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0014] 1. The integrated design of the quick release connector and the pressure release valve realizes the pressing type quick dismounting function through the axial limiting protrusion and the rotating clamping structure, the operation efficiency is improved compared with the traditional screw knob structure, the sealing structure of the double sealing rings and the limiting sleeve keeps zero leakage under working pressure, and the service life is prolonged compared with the conventional single sealing structure; the tower-shaped coil spring cooperates with the positioning column structure, the reset force is provided in the stroke range through the gradient change design of the spring stiffness, and the automatic reset accuracy after pressure release is ensured;

[0015] 2. The plastic integrally injection molding process shortens the production cycle of the connector assembly and reduces the cost compared with the traditional metal assembly; the interference fit assembly process improves the assembly accuracy of the pressure release valve assembly and ensures no gap loosening;

[0016] 3、Guiding bevel design makes the engagement angle of the limiting protrusion optimal, reduces the rotating torque, prevents the damage of components caused by misoperation, the pressing limiting step forms a safety stroke allowance, avoids the sealing failure caused by excessive pressing, the trapezoidal transition structure reduces the fluid resistance coefficient, and the flow efficiency is improved compared with the right angle transition structure;

[0017] 4、The inner concave petal reinforcing rib improves the bottom compression strength, and the annular external thread open end installation torque is not deformed;

[0018] In conclusion, the utility model discloses a structure innovation and process improvement, realizes the quick detach structure operation under the premise of guaranteeing the safety of pressure container, reduces production cost simultaneously, and has remarkable market competition advantage. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be explained through example and referring to the mode of the drawings, wherein:

[0020] Figure 1 It is the structure schematic diagram of the utility model;

[0021] Figure 2 It is the container main body perspective view of the utility model;

[0022] Figure 3 It is another perspective view of the container main body of the utility model;

[0023] Figure 4 It is the quick detach type connector cross section structure schematic diagram of the utility model;

[0024] Marked as in the drawing: 1-container main body, 11-annular external thread open end, 12-inner concave petal reinforcing rib, 2-quick detach type connector, 21-inner thread connection end, 22-first limiting protrusion, 3-pressure release valve, 31-liquid inlet pipeline, 32-spring, 33-caching cavity, 34-limiting sleeve, 35-first sealing ring, 36-second sealing ring, 37-pressing key, 38-second limiting protrusion. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely in the drawings of the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. The components of the utility model embodiment described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0027] In one embodiment of the application, as shown in Figures 1-4 The embodiment provides a small aerosol plastic pressure container with a quick release structure, which comprises a container body 1 and a quick release connector 2, the container body 1 is connected with the quick release connector 2 through threads, a pressure release valve 3 is arranged in the center through hole of the quick release connector 2, an inner threaded connection end 21 is arranged at the bottom of the pressure release valve 3, and at least two first limiting protrusions 22 are uniformly distributed in the center through hole at the top of the pressure release valve 3; the pressure release valve 3 comprises an axial liquid inlet pipe 31, a buffer cavity 33, a limiting sleeve 34, a first sealing ring 35, a second sealing ring 36 and a pressing key 37, one end of the buffer cavity 33 is communicated with the liquid inlet pipe 31, the other end is communicated with the top of the inner threaded connection end 21, and the bottom of the pressing key 37 is elastically connected with the bottom of the buffer cavity 33 through a spring 32; a second limiting protrusion 38 corresponding in number to the first limiting protrusion 22 is arranged at the top of the pressing key 37, and the second limiting protrusion 38 and the first limiting protrusion 22 form an axial limiting structure capable of being rotatably clamped; the limiting sleeve 34 is arranged on the inner wall of the buffer cavity 33, the outside of the limiting sleeve 34 is sealed with the buffer cavity 33 through the first sealing ring 35, and the inside of the limiting sleeve 34 is sealed with the pressing key 37 through the second sealing ring 36. The quick release structure integrated with the pressure release valve 3 realizes quick installation / dismounting, and improves the convenience of use; the axial limiting protrusion design ensures the stability of the connection and prevents the connection from falling off due to misoperation; the double sealing rings realize first and second layered sealing, and improve the air tightness between the buffer cavity 33 and the external environment and the pressing key 37; the spring 32 elastically connects the pressing key 37, realizes automatic pressure reset, and prolongs the service life of the valve.

[0028] In another embodiment of the application, the contact surfaces of the first limiting protrusion 22 and the second limiting protrusion 38 are provided with guide inclined surfaces, and the number of the guide inclined surfaces of the first limiting protrusion 22 is equal to that of the second limiting protrusion 38 and is distributed in a circumferential corresponding manner. The guide inclined surfaces reduce the frictional resistance when the protrusions are clamped, so that the rotation alignment is smoother; the circumferentially distributed protrusion number matching design enhances the structural symmetry, disperses the stress, and avoids single-point wear.

[0029] In another embodiment of the utility model, the spring 32 is a tower-shaped coil spring 32, the bottom fixed end of which is provided with a spring 32 positioning column, and the top is embedded in a spring 32 containing groove arranged at the bottom of the pressing key 37. The tower-shaped spring 32 saves axial space, provides nonlinear elastic force, and meets different pressing stroke requirements; the spring 32 positioning column cooperates with the groove to prevent the spring 32 from deflecting, ensures the vertical movement of the pressing key 37, and reduces the wear of the sealing ring.

[0030] In another embodiment of the utility model, the top surface of the pressing key 37 is provided with an anti-skid pattern, and the end diameter is greater than the inner diameter of the center through hole to form a pressing limiting step. The anti-skid pattern increases the friction force of the surface of the pressing key 37, prevents slipping during operation, and the pressing limiting step avoids excessive pressing to cause plastic deformation of the spring 32 or sealing failure.

[0031] In another embodiment of the utility model, a trapezoidal transition fitting structure is adopted at the connection between the liquid inlet pipeline 31 and the buffer cavity 33. The trapezoidal transition reduces liquid turbulence and flow resistance, and the trapezoidal fitting surface enhances the sealing performance of the connection.

[0032] In another embodiment of the utility model, the quick release connector 2 and the container body 1 are integrally injection molded by using plastic material, and the components of the pressure release valve 3 are assembled in the center through hole through interference fit. Plastic integrally injection molding reduces processing cost, is lightweight and corrosion-resistant, and interference fit ensures that the components of the pressure release valve 3 are fixed without gap, avoiding the risk of vibration loosening.

[0033] In another embodiment of the utility model, the first sealing ring 35 is an elastic rubber sealing ring with a circular cross section. The circular cross section sealing ring is uniformly compressed, has strong deformation adaptability, and has high long-term sealing reliability; the elastic rubber material is resistant to aging and compatible with various chemical media.

[0034] In another embodiment of the utility model, the top of the container body 1 is provided with an annular external thread open end 11, and the bottom is provided with an inner concave petal reinforcing rib 12. The annular external thread provides a standardized interface, which is suitable for various quick release connectors; the inner concave petal reinforcing rib improves the bottom compressive strength, prevents injection shrinkage deformation, and optimizes the appearance design.

[0035] The working principle of the utility model is as follows:

[0036] 1. Assembly and locking stage, mechanical coupling: when the bottom internal thread of the quick release connector 2 is screwed with the top external thread of the container body 1, the first limiting lug 22 (connector) and the second limiting lug 38 (pressing key 37) are automatically aligned through the 15° guide slope.

[0037] 2、Pressure storage stage, double sealing: the first sealing ring 35 forms static sealing with the limiting sleeve 34, and the second sealing ring 36 forms dynamic sealing with the pressing key 37 under the pressure of the spring 32; structure reinforcement: the bottom petals strengthen ribs (6 petals, 120° uniform distribution) form a spatial truss structure to disperse the liquid impact force to the container sidewall;

[0038] 3、Spraying working stage, trigger action: the finger presses the anti-skid pattern area Overcome the force of the 50N spring 32 to move the pressing key 37 down by 3mm; flow channel opening: the second sealing ring 36 is separated from the sealing cone surface, the buffer cavity 33 is communicated with the center through hole, and the differential pressure drives the liquid to be sprayed at a flow rate of 15m / s; flow control: the stiffness gradient (0.5N / mm→1.2N / mm) of the tower-shaped spring 32 realizes the linear correspondence of pressing force-flow rate, and the maximum flow rate can reach 120mL / s;

[0039] 4、Safety reset stage, automatic closure: after the pressing key 37 is released, the spring 32 pushes the assembly to reset in 0.3s, and the sealing surface is recombined; pressure relief: when the pressure exceeds 0.8MPa, the elastic deformation of the buffer cavity 33 reaches 0.15mm, and a micro-gap is formed between the first sealing ring 35 and the limiting sleeve 34 for pressure relief; failure protection: when the pressure is abnormally high, the container body 1 preferentially deforms at the root of the strengthen rib, and the pressure is released in a directional manner.

Claims

1. A small plastic pressure vessel for aerosols with a quick-release structure, comprising a container body (1) and a quick-release connector (2), wherein the container body (1) and the quick-release connector (2) are connected by threads, characterized in that: The quick-release connector (2) has a pressure relief valve (3) integrated in the central through hole, and an internal threaded connection end (21) at its bottom. At least two first limiting protrusions (22) are evenly distributed in the circumferential direction in the central through hole at the top. The pressure relief valve (3) includes an inlet pipe (31) arranged along the axial direction, a buffer chamber (33), a limiting sleeve (34), a first sealing ring (35), a second sealing ring (36), and a pressing key (37). One end of the buffer chamber (33) is connected to the inlet pipe (31), and the other end is connected to the top of the internal threaded connection end (21). The bottom of the pressing key (37) is elastically connected to the bottom of the buffer chamber (33) through a spring (32). The top outer periphery of the press key (37) is provided with a second limiting protrusion (38) corresponding to the number of the first limiting protrusion (22), and the second limiting protrusion (38) and the first limiting protrusion (22) form a rotatable axial limiting structure; The limiting sleeve (34) is fitted on the inner wall of the buffer cavity (33). Its exterior is sealed to the buffer cavity (33) through the first sealing ring (35), and its interior is sealed to the pressing key (37) through the second sealing ring (36).

2. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The contact surfaces of the first limiting protrusion (22) and the second limiting protrusion (38) are both provided with guide slopes, and the number of the two is equal and they are distributed in a circumferential manner.

3. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The spring (32) is a tower-shaped helical spring (32), with a spring (32) positioning post at its bottom fixed end and its top embedded in the spring (32) receiving groove at the bottom of the press key (37).

4. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The top surface of the press key (37) is provided with anti-slip texture, and its end diameter is larger than the inner diameter of the central through hole to form a press limit step.

5. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The connection between the liquid inlet pipe (31) and the buffer chamber (33) adopts a trapezoidal transition fit structure.

6. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The quick-release connector (2) and the container body (1) are integrally injection molded from plastic material, and the components of the pressure relief valve (3) are assembled in the central through hole by interference fit.

7. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The first sealing ring (35) is an elastic rubber sealing ring with a circular cross-section.

8. The aerosol plastic miniature pressure vessel according to claim 1, characterized in that: The container body (1) is provided with an annular external thread opening end (11) at the top and an inwardly concave floral reinforcing rib (12) at the bottom.

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