Integrated double-safety automatic pressure release valve

Abstract

The utility model discloses an integrated double-insurance automatic pressure release valve which comprises a valve body, the valve body comprises two valve cavities which are arranged in a spaced mode in the axial direction, exhaust holes communicated with the corresponding valve cavities are formed in the two ends of the valve body respectively, and an air inlet connector is arranged in the middle of the valve body and communicated with the two valve cavities respectively. The two valve cavities are each internally provided with a valve element assembly, and at least one valve element assembly in the two valve cavities moves in the axial direction of the valve cavities under the action of the gas pressure of the pressure relief cavity, opens or closes the gas inlet connector and communicates with or closes the exhaust hole of the corresponding valve cavity. According to the utility model, the two valve core assemblies are arranged in one valve body, one valve core assembly is clamped, and the other valve core assembly can be automatically opened to release pressure, so that the dual protection function is realized, and the use safety of the sparkling water machine is improved; in addition, manual operation is not needed, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection devices for bubble water machines, and particularly relates to an integrated double - insurance automatic pressure relief valve. Background Art

[0002] A bubble water machine can press carbon dioxide gas into a water bottle to make bubble water. During the process of making bubble water, the air pressure in the water bottle continuously rises. To prevent safety problems caused by excessive air pressure, a pressure relief valve is provided in the bubble water machine. When the air pressure in the water bottle reaches the safe air pressure, it will automatically relieve pressure through the pressure relief valve.

[0003] For the pressure relief valve of a bubble water machine, the valve core is usually of a piston - type structure. Once the valve core gets stuck, the automatic pressure relief function will be lost, resulting in potential safety hazards. Summary of the Utility Model

[0004] In view of this, the utility model provides an integrated double - insurance automatic pressure relief valve to solve the problem of potential safety hazards existing in the automatic pressure relief valve of the prior art.

[0005] The integrated double - insurance automatic pressure relief valve provided by the utility model includes a valve body. The valve body includes two valve cavities separated axially. The two ends of the valve body are respectively provided with exhaust holes communicated with the corresponding valve cavities, and an air inlet joint is arranged in the middle of the valve body and communicated with the two valve cavities respectively; valve core assemblies are respectively arranged in the two valve cavities. At least one of the valve core assemblies in the two valve cavities moves axially along the valve cavity under the action of the gas pressure in the pressure relief cavity, opens or closes the air inlet joint, and is communicated with or closes the exhaust hole of the corresponding valve cavity.

[0006] In the above technical solution, preferably, a first valve cover and a second valve cover are respectively arranged at the two ends of the valve body, and the exhaust holes include a first exhaust hole and a second exhaust hole, which are respectively arranged on the first valve cover and the second valve cover.

[0007] In the above technical solution, preferably, a pressure relief hole is arranged on the valve core assembly, and the air inlet joint is communicated with the first exhaust hole or the second exhaust hole respectively through the pressure relief hole.

[0008] In the above technical solution, preferably, an exhaust plug is arranged in the second valve cover. A round tube is arranged on the outer end face of the second valve cover. The outer end of the round tube is closed, and a whistle hole is arranged on the outer side wall of the round tube; the exhaust plug includes a round sleeve. One end of the round sleeve facing the air inlet joint is open, and the other end is closed. A cylindrical positioning column is arranged on the outer end face of the closed end. A cut - off plane is formed by axially cutting the positioning column, and the inner cavity of the round sleeve is penetrated. The second exhaust hole is formed between the cut - off plane and the inner wall of the round tube.

[0009] In the above technical solution, preferably, the cross-section of the whistle hole is a right trapezoid, and the waist where the right angle is located is at the exhaust plug.

[0010] In the above technical solution, preferably, the spool assembly includes a spool, a guide sleeve, and a return spring. The spool is made of a flexible material, and an annular rib is provided on the outer end surface. The diameter of the annular rib is respectively larger than the diameters of the air inlets of the two valve cavities. The guide sleeve is sleeved on the spool, and the return spring is arranged in the guide sleeve, with one end fixed to the spool and the other end abutted and fixed in the corresponding valve cavity.

[0011] In the above technical solution, preferably, a hook is provided at the inner end of the spool, and an annular snap ring is provided on the inner wall of the guide sleeve. The inner end of the spool is inserted into the guide sleeve, and the hook is snap-fitted with the annular snap ring.

[0012] In the above technical solution, preferably, a stepped shaft is provided on the outer circumferential surface of one end of the guide sleeve facing the air inlet, and the pressure relief hole is provided on the end surface of the stepped shaft.

[0013] As can be seen from the above technical solution, the integrated double insurance automatic pressure relief valve provided by the present invention solves the problem of potential safety hazards existing in the prior art automatic pressure relief valve. Compared with the prior art, the present invention has the following beneficial effects:

[0014] Two spool assemblies are arranged in one valve body. When one spool assembly is stuck, the other spool assembly can automatically open for pressure relief, realizing a double protection function and improving the use safety of the bubble water machine; in addition, there is no need for manual operation, which is convenient to use.

[0015] In addition, the present invention adopts an integrated structure design, which is simple, compact, and convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce and explain the drawings required for describing the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the integrated double insurance automatic pressure relief valve provided by the present invention;

[0018] Figure 2 For Figure 1 The sectional view of the shown integrated double insurance automatic pressure relief valve;

[0019] Figure 3 It is Figure 1 a schematic exploded view of the integrated double - insurance automatic pressure - relief valve shown;

[0020] Figure 4 a schematic view of the exhaust plug in the present utility model;

[0021] Figure 5 It is Figure 4 a sectional view of the exhaust plug shown;

[0022] Figure 6 a schematic exploded view of the spool assembly in the present utility model;

[0023] Figure 7 a schematic view of the spool in the present utility model;

[0024] Figure 8 It is Figure 7 a sectional view of the exhaust plug shown.

[0025] Figures 1 - 8 In it, the corresponding relationships of the components are as follows:

[0026] valve body 210, first valve cover 240, second valve cover 250;

[0027] first valve cavity 211, second valve cavity 212, air inlet joint 213;

[0028] first exhaust hole 241, second exhaust hole 251, exhaust plug 252, round tube 253, whistle hole 254;

[0029] spool assembly 300, spool 310, guide sleeve 320, return spring 330;

[0030] hook 311, annular rib 312, annular snap ring 321, stepped shaft 322, pressure - relief hole 323;

[0031] sleeve 2521, positioning post 2522, cutting plane 2523. Specific embodiments

[0032] Next, in combination with the accompanying drawings of the embodiments of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described. Obviously, the following described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope protected by the present utility model.

[0033] In order to make a clearer explanation and illustration of the technical solutions and implementation manners of the present utility model, several preferred specific embodiments for implementing the technical solutions of the present utility model are introduced below.

[0034] It should be noted that the orientation terms such as "inside, outside", "front, back", and "left, right" in this text are expressed based on the product in its operating state. Obviously, the use of the corresponding orientation terms does not limit the scope of protection of this solution.

[0035] The sparkling water machine prevents safety problems caused by excessive air pressure in the water bottle through a pressure relief valve. To prevent the valve core of the pressure relief valve from getting stuck, the present utility model provides an integrated double - insurance automatic pressure relief valve, which can automatically relieve pressure when the inflation pressure of the water bottle is too high and emit a whistling sound for reminder. In particular, the valve body of the integrated double - insurance automatic pressure relief valve includes two valve cavities separated axially. Exhaust holes communicating with the corresponding valve cavities are respectively provided at both ends of the valve body, and an air inlet joint is provided in the middle of the valve body and communicates with both valve cavities. Valve core assemblies are respectively provided in the two valve cavities. At least one of the valve core assemblies in the two valve cavities can move axially along the corresponding valve cavity under the action of the pressure in the pressure relief cavity of the sparkling water machine, open or close the air inlet joint, and communicate with or close the exhaust hole of the corresponding valve cavity to achieve the pressure relief protection function. When one of the valve core assemblies gets stuck, the other valve core assembly can automatically open for pressure relief, realizing a double - protection function and improving the safety of using the sparkling water machine.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 which are schematic diagrams of the integrated double - insurance automatic pressure relief valve provided by the present utility model, Figure 2 is Figure 1 the sectional view of the integrated double - insurance automatic pressure relief valve shown in Figure 3 is Figure 1 the exploded structural schematic diagram of the integrated double - insurance automatic pressure relief valve shown in

[0037] As shown in Figure 1 、 Figure 2 、 Figure 3 An integrated double - insurance automatic pressure relief valve provided by the present utility model includes a valve body 210. The valve body 210 is axially divided into an independent first valve cavity 211 and a second valve cavity 212, forming two valve cavities. The outer ends of the first valve cavity 211 and the second valve cavity 212 are respectively open. An air inlet joint 213 is provided on the valve body 210. The air inlet joint 213 is arranged in the middle of the valve body 210 and communicates with the first valve cavity 211 and the second valve cavity 212 respectively.

[0038] The outer end of the first valve cavity 211 is connected with a first valve cover 240, and the outer end of the second valve cavity 212 is connected with a second valve cover 250. The exhaust holes include a first exhaust hole 241 and a second exhaust hole 251, which are respectively arranged on the first valve cover 240 and the second valve cover 250.

[0039] A spool assembly 300 is respectively provided in the first valve cavity 211 and the second valve cavity 212, and a pressure relief hole is provided on the spool assembly 300.

[0040] Such as Figure 4 , Figure 5 , Figure 6 As shown, the spool assembly 300 includes a spool 310, a guide sleeve 320 and a return spring 330. The spool 310 can be made of a flexible material, such as silicone. A hook 311 is provided at the inner end of the spool 310, and an annular rib 312 is provided on the outer end face of the spool 310. The diameter of the annular rib 312 is respectively larger than the diameters of the air inlets of the two corresponding valve cavities. For example, the diameter of the annular rib 312 is respectively larger than the diameters of the air inlets of the first valve cavity 211 and the second valve cavity 212, so as to realize the function of closing the air inlets of the two corresponding valve cavities.

[0041] The guide sleeve 320 is a cylinder with open ends at both ends, and is adapted to the first valve cavity 211 and the second valve cavity 212. An annular snap ring 321 is provided on the inner wall of the guide sleeve 320 (please refer to Figure 2 ). The inner end of the spool 310 is inserted into the guide sleeve 320, and the hook 311 is engaged and fixed with the annular snap ring 321, which is convenient for disassembly and assembly. After the spool 310 or the guide sleeve 320 is damaged, it can be easily replaced separately, reducing costs.

[0042] A stepped shaft 322 is provided on the outer circumferential surface of one end of the guide sleeve 320 away from the air inlet, and the pressure relief hole 323 is provided on the end face of the stepped shaft 322. The return spring 330 is provided in the guide sleeve 320, with one end sleeved on the inner end of the spool 310 and the other end abutted against the first valve cover 240 or the second valve cover 250.

[0043] The pressure relief hole 323 can also be set as a pressure relief groove axially provided along the outer circumferential surface of the guide sleeve 320.

[0044] The air inlet joint 213 is used to connect the pressure relief pipe of the bubble water machine. The pressure relief pipe of the bubble water machine is connected to the pressure relief cavity of the bubble water machine, and the gas in the pressure relief cavity acts on the spool assemblies 300 in the first valve cavity 211 and the second valve cavity 212 respectively through the air inlet joint 213.

[0045] At least one spool assembly 300 in the first valve cavity 211 and the second valve cavity 212 can move axially along the first valve cavity 211 or the second valve cavity 212 respectively under the action of the gas pressure in the pressure relief cavity, so that the air inlet joint 213 is respectively communicated with the first exhaust hole 241 and the second exhaust hole 251 through the pressure relief hole, realizing the automatic pressure relief protection function. When any one of the spool assemblies in the first valve cavity 211 and the second valve cavity 212 is stuck, the other spool assembly can complete the automatic pressure relief function, realizing the dual protection function. The return spring 330 is used to reset the spool assembly after the pressure relief is completed.

[0046] The second valve cover 250 also has a whistling reminder function, and the specific structure is as follows:

[0047] An exhaust plug 252 is provided inside the second valve cover 250. A round tube 253 is provided on the outer end face of the second valve cover 250. The outer end of the round tube 253 is closed. A whistling hole 254 is provided on the outer side wall of the round tube 253. The cross-section of the whistling hole 254 is a right trapezoid, and the waist where the right angle is located is at the exhaust plug 252. The second exhaust hole 251 is arranged along the axial direction of the exhaust plug 252.

[0048] As Figure 7 、 Figure 8 shown, the exhaust plug 252 includes a round sleeve 2521. One end of the round sleeve 2521 facing the intake joint 213 is open, and the other end is closed. A cylindrical positioning post 2522 is provided on the outer end face of the closed end. A cut plane 2523 is formed by axially cutting the positioning post 2522, and the inner cavity of the round sleeve 2521 is opened up. A second exhaust hole 251 is formed between the cut plane 2523 and the inner wall of the round tube 253. The round sleeve 2521 is threadedly connected to the second valve cover 250 of the second valve body.

[0049] The working principle of the present utility model is as follows:

[0050] The gas in the pressure relief cavity of the bubble water machine acts on the valve cores in the first valve cavity 211 and the second valve cavity 212 via the intake joint 213 at the same time. When the thrust of the gas on the valve core 310 is less than the elastic force of the return spring 33, the valve core assemblies in the first valve cavity 211 and the second valve cavity 212 remain in the Figure 3 shown closed position, and the annular convex rib 312 blocks the intake ports of the first valve cavity 211 and the second valve cavity 212.

[0051] When the thrust of the gas in the pressure relief cavity of the bubble water machine on the valve core 310 is greater than the elastic force of the return spring 330, at least one valve core assembly in the first valve cavity 211 and the second valve cavity 212 is pushed to move in a direction away from the intake port of its respective valve cavity. The annular convex rib 312 opens the intake port of the first valve cavity 211 or the second valve cavity 212. The gas in the pressure relief cavity of the bubble water machine enters the inner cavity of the first end cover or the second end cover via the gap between the guide sleeve 221 and the inner wall of the first valve cavity 211 or the second valve cavity 212 and the pressure relief hole, and finally is discharged through the first exhaust hole and the second exhaust hole to release the pressure.

[0052] When the pressure drops to be less than the elastic force of the return spring 330, the return spring 330 resets and pushes the valve core assembly to move in a direction towards the intake port of its respective valve cavity, and the annular convex rib 312 closes the intake port of the first valve cavity 211 or the second valve cavity 212.

[0053] For the embodiment without the whistle prompt function, the elastic forces of the return springs in the two valve core assemblies are the same. When the set pressure is reached, the two valve core assemblies will open simultaneously for pressure relief protection. Due to manufacturing errors, any one of the valve core assemblies can also be opened. If one of the valve core assemblies gets stuck, the other can open automatically.

[0054] For the embodiment with the whistle prompt function, for example, the second valve cover 250 has the whistle prompt function. In this embodiment, the elastic force of the return spring of the valve core assembly in the second valve cavity 212 is less than the elastic force of the return spring in the first valve cavity 211. In this way, when the set pressure is reached, the valve core assembly in the second valve cavity 212 is opened first for pressure relief protection and a whistle prompt is issued. When the valve core assembly in the second valve cavity 212 gets stuck, the valve core assembly in the first valve cavity 211 will open automatically.

[0055] In the present utility model, the exhaust plug 252 can be used to replace the second valve cover 250 of the second valve body and is connected to the outer end of the second valve cavity 212 to cancel the whistle function and only retain the dual pressure relief protection function.

[0056] Based on the descriptions of the above specific embodiments, compared with the prior art, the integrated double - insurance automatic pressure relief valve provided by the present utility model has the following advantages:

[0057] First, two valve core assemblies are provided in one valve body. If one valve core assembly gets stuck, the other valve core assembly can open automatically for pressure relief, realizing the dual protection function and improving the safety of using the bubble water machine; in addition, there is no need for manual operation, which is convenient to use.

[0058] Second, it adopts an integrated structure design, with a simple, compact structure, small occupied space, and convenient assembly.

[0059] Third, a guide sleeve is sleeved on the valve core of the valve core assembly, and the guide sleeve is adapted to the diameter of the valve cavity. Through the guide sleeve, the valve core assembly moves more smoothly in the valve cavity, with a fast response speed, and can avoid the valve core from tilting and jamming during the movement.

[0060] Fourth, the valve core and the guide sleeve adopt a detachable connection method, which is convenient for disassembly and assembly, can be replaced separately, and reduces costs.

[0061] Fifth, the second valve cover also has a whistle reminder function to indicate that the bubble water machine is in the pressure relief protection state, avoiding splashing when removing the water bottle under excessive pressure.

[0062] Sixth, the whistle reminder structure of the second valve cover has a simple structure, few components, and convenient assembly.

[0063] Finally, it should also be noted that the term "comprising", "including" or any other variant thereof used in this text is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0064] The present utility model is not limited to the above-described optimal embodiments. Anyone should be aware that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model.

Claims

1. An integrated double-insurance automatic pressure relief valve, comprising a valve body, characterized in that, The valve body includes two valve cavities separated axially. Exhaust holes communicating with the corresponding valve cavities are respectively provided at both ends of the valve body. An air inlet joint is provided in the middle of the valve body and communicates with both valve cavities respectively. Spool assemblies are respectively provided in the two valve cavities. At least one of the spool assemblies in the two valve cavities moves axially along the valve cavity under the action of the gas pressure in the pressure relief cavity to open or close the air inlet joint and communicate with or close the exhaust hole of the corresponding valve cavity.

2. The integrated double-insurance automatic pressure relief valve according to claim 1, wherein A first valve cover and a second valve cover are respectively provided at both ends of the valve body. The exhaust holes include a first exhaust hole and a second exhaust hole which are respectively provided on the first valve cover and the second valve cover.

3. The integrated double-insurance automatic pressure relief valve according to claim 2, characterized in that, A pressure relief hole is provided on the spool assembly. The air inlet joint communicates with the first exhaust hole or the second exhaust hole respectively through the pressure relief hole.

4. The integrated double-insurance automatic pressure relief valve according to claim 2, wherein An exhaust plug is provided in the second valve cover. A round tube is provided on the outer end face of the second valve cover. The outer end of the round tube is closed. Whistling holes are provided on the outer side wall of the round tube. The exhaust plug includes a round sleeve. One end of the round sleeve facing the air inlet joint is open and the other end is closed. A cylindrical positioning post is provided on the outer end face of the closed end. A cut plane is formed by axially cutting the positioning post and the inner cavity of the round sleeve is opened. The second exhaust hole is formed between the cut plane and the inner wall of the round tube.

5. The integrated double-insurance automatic pressure relief valve according to claim 4, characterized in that, The cross section of the whistling hole is a right trapezoid and the waist where the right angle is located is at the exhaust plug.

6. The integrated double-insurance automatic pressure relief valve according to claim 3, characterized in that The spool assembly includes a spool, a guide sleeve and a return spring. The spool is made of a flexible material and an annular convex rib is provided on the outer end face. The diameter of the annular convex rib is respectively larger than the diameters of the air inlets of the two valve cavities. The guide sleeve is sleeved on the spool. The return spring is arranged in the guide sleeve, fixed to the spool at one end and abutted and fixed in the corresponding valve cavity at the other end.

7. The integrated double-insurance automatic pressure relief valve according to claim 6, characterized in that, A hook is provided at the inner end of the spool. An annular snap ring is provided on the inner wall of the guide sleeve. The inner end of the spool is inserted into the guide sleeve and the hook is clamped and fixed with the annular snap ring.

8. The integrated double-insurance automatic pressure relief valve according to claim 6, characterized in that, A stepped shaft is provided on the outer circumferential surface of the guide sleeve towards the air inlet. The pressure relief hole is provided on the end face of the stepped shaft.

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