Combined double-safety automatic pressure release valve

Abstract

The utility model discloses a combined type double-safety automatic pressure release valve which comprises a first valve body, the first valve body comprises two valve cavities which are arranged in a spaced mode in the axial direction, an exhaust hole is formed in the first valve body and communicated with the two valve cavities respectively, valve element assemblies are arranged in the two valve cavities respectively, at least one valve element assembly is arranged in the first valve body, and the valve element assemblies are communicated with the exhaust hole. And under the action of the gas pressure of the pressure relief cavity, the pressure relief valve axially moves along the corresponding valve cavity to open or close the air inlet of the corresponding valve cavity, so that the air inlet of the corresponding valve cavity is communicated with or closed from the exhaust hole. According to the utility model, the two valve core assemblies are arranged in the valve body, and when one valve core assembly is clamped, the other valve core assembly can be automatically opened to release pressure, so that the dual protection function is realized, the use safety of the sparkling water machine is further improved, manual operation is not needed, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection devices for bubble water machines, in particular to a combined double-safety automatic pressure relief valve. Background Art

[0002] The sparkling water machine can press carbon dioxide gas into a water bottle to make sparkling water. In the process of making sparkling water, the air pressure in the water bottle continues to rise. In order to prevent safety problems caused by excessive air pressure, the sparkling water machine will be equipped with a pressure relief valve. When the air pressure in the water bottle reaches the safe pressure, it will automatically release the pressure through the pressure relief valve.

[0003] The pressure relief valve of the sparkling water machine usually has a piston-type structure. Once the valve core is stuck, it will lose its automatic pressure relief function, creating a safety hazard. Utility Model Content

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

[0005] The utility model provides a combined double-safety automatic pressure relief valve, comprising a first valve body, wherein the first valve body comprises two valve chambers separated along the axial direction, an exhaust hole is provided on the first valve body, which are respectively connected with the two valve chambers, and valve core assemblies are respectively provided in the two valve chambers. At least one of the valve core assemblies in the two valve chambers moves axially along the corresponding valve chamber under the action of the gas pressure in the pressure relief chamber to open or close the air inlet of the corresponding valve chamber, so that the air inlet of the corresponding valve chamber is connected with or closed to the exhaust hole.

[0006] In the above technical solution, preferably, a first valve cover and a second valve cover are respectively provided at both ends of the first valve body, and the first valve body is axially divided into a first cavity and a second cavity that are independent of each other, and the exhaust hole is arranged in the middle of the first valve body and is communicated with the first cavity and the second cavity respectively; the air inlet on the first valve cover is connected to the first air outlet of the three-way joint through a first conduit, and the air inlet on the second valve cover is connected to the second air outlet of the three-way joint through a second conduit; the two valve chambers include a first valve chamber and a second valve chamber, which are respectively arranged on the first valve cover and the second valve cover; at least one of the valve core components in the first valve chamber and the second valve chamber moves axially along the first valve chamber or the second valve chamber under the action of the gas pressure in the pressure relief chamber, so that the first conduit or the second conduit is communicated with the exhaust hole.

[0007] In the above technical solution, preferably, the inner cavity of the first valve body is axially divided into the first cavity and the second cavity which are independent of each other by a partition.

[0008] In the above technical solution, preferably, the valve core assembly includes a valve core, a guide sleeve and a return spring. The valve core is made of a flexible material and is provided with an annular ridge on the outer end surface. The diameter of the annular ridge is respectively larger than the diameter of the air inlet of the two valve cavities. The guide sleeve is mounted on the valve core. The return spring is arranged in the guide sleeve, one end of which is fixed to the valve core and the other end is against the partition.

[0009] In the above technical solution, preferably, a pressure relief hole is provided on the valve core assembly, and the first conduit or the second conduit is respectively connected to the exhaust hole through the pressure relief hole.

[0010] In the above technical solution, preferably, a hook is provided at the inner end of the valve core, an annular clamping ring is provided on the inner wall of the guide sleeve, the inner end of the valve core is inserted into the guide sleeve, and the hook is fixedly engaged with the annular clamping ring.

[0011] In the above technical solution, preferably, the first valve body is cylindrical with open ends, a circular shoulder is provided in the axial middle part of the outer circumferential surface of the first valve body, the exhaust hole is arranged on the shoulder, and the exhaust hole is connected to the first cavity and the second cavity respectively.

[0012] In the above technical solution, preferably, a fixing ring is also provided on the shaft shoulder.

[0013] In the above technical solution, preferably, step holes are respectively provided at both ends of the inner cavity of the first valve body, a step shaft is provided on the outer circumferential surface of one end of the guide sleeve facing the first valve body, the end surface of the step shaft is used to abut against the step hole on the first valve body, and the pressure relief hole is arranged on the end surface of the step shaft.

[0014] In the above technical solution, preferably, the valve core is made of silicone.

[0015] It can be seen from the above technical solutions that the combined double-safety automatic pressure relief valve provided by the utility model solves the problem of potential safety hazards in the automatic pressure relief valve of the prior art. Compared with the prior art, the utility model has the following beneficial effects:

[0016] Two valve core assemblies are arranged in the valve body. When one of the valve core assemblies is stuck, the other valve core assembly can be automatically opened to release the pressure, thus realizing the double protection function and further improving the safety of the use of the bubble water machine. It does not require manual operation and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce and illustrate the drawings required for use in the embodiments of the utility model or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a combined double-insurance automatic pressure relief valve provided by the utility model;

[0019] Figure 2 for Figure 1 The cross-sectional view of the combined double insurance automatic pressure relief valve shown;

[0020] Figure 3 for Figure 1 The exploded structural diagram of the combined double insurance automatic pressure relief valve is shown;

[0021] Figure 4 It is a schematic diagram of the first valve body in the utility model;

[0022] Figure 5 for Figure 4 A cross-sectional view of the first valve body shown;

[0023] Figure 6 This is a schematic diagram of the exploded structure of the valve core assembly in the utility model;

[0024] Figure 7 It is a schematic diagram of the valve core in the utility model;

[0025] Figure 8 for Figure 7 Cross-section of the valve core shown.

[0026] Figure 1-Figure 8 In the figure, the corresponding relationship of the parts is as follows:

[0027] A first valve body 110, a first valve cover 120, a second valve cover 130, a first conduit 140, a three-way connector 150, and a second conduit 160;

[0028] First cavity 111, second cavity 112, exhaust hole 113, partition 114, shaft shoulder 115, fixing ring 116, step hole 117;

[0029] The first valve cavity 121, the first valve body, the second valve cavity 131, and the air inlet 151;

[0030] Valve core 310, guide sleeve 320, return spring 330;

[0031] Hook 311 , annular ridge 312 , annular snap ring 321 , and stepped shaft 322 . DETAILED DESCRIPTION

[0032] The following will be combined with the drawings of the embodiments of the utility model to clearly and completely describe the technical solutions of the embodiments of the utility model. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to more clearly explain and illustrate the technical solution and implementation of the present utility model, several preferred specific embodiments for implementing the technical solution of the present utility model are introduced below.

[0034] It should be noted that the directional words such as "inside, outside", "front, back" and "left, right" in this article are expressed based on the product usage status. Obviously, the use of the corresponding directional words does not constitute a limitation on the protection scope of this scheme.

[0035] The bubble water machine uses a pressure relief valve to prevent the air pressure in the water bottle from being too high and causing safety problems. In order to prevent the valve core of the pressure relief valve from getting stuck and causing safety hazards, the utility model provides a combined double-safety automatic pressure relief valve, including a first valve body, the first valve body including two valve chambers separated along the axial direction, an exhaust hole is provided on the first valve body, which is respectively connected to the two valve chambers, and valve core components are respectively provided in the two valve chambers. At least one valve core component in the two valve chambers moves along the axial direction of the corresponding valve chamber under the action of the gas pressure in the pressure relief chamber, opens or closes the air inlet of the corresponding valve chamber, and makes the air inlet of the corresponding valve chamber connected or closed with the exhaust hole. When one of the valve core components is stuck, the other valve core component can automatically open and release pressure, realizing a dual protection function and improving the safety of the bubble water machine.

[0036] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of a combined double-insurance automatic pressure relief valve provided by the utility model. Figure 2 for Figure 1 The cross-sectional view of the combined double insurance automatic pressure relief valve is shown in FIG. Figure 3 for Figure 1 The schematic diagram of the exploded structure of the combined double-insurance automatic pressure relief valve is shown.

[0037] like Figure 1 , Figure 2 , Figure 3As shown, the utility model provides a combined double-safety automatic pressure relief valve, comprising a first valve body 110 and a first valve cover 120 and a second valve cover 130 respectively arranged at both ends of the first valve body 110. The air inlet on the first valve cover 120 is connected to the first air outlet of the three-way joint 150 through a first conduit 140, and the air inlet on the second valve cover 130 is connected to the second air outlet of the three-way joint 150 through a second conduit 160.

[0038] The first valve body 110 is divided into a first chamber 111 and a second chamber 112 which are independent of each other along its axial direction. The outer ends of the first chamber 111 and the second chamber 112 are respectively connected to the first valve cover 120 and the second valve cover 130. The exhaust hole 113 is arranged in the middle of the first valve body 110, and the exhaust hole 113 is respectively connected to the first chamber 111 and the second chamber 112.

[0039] The first valve cover 120 is provided with a first valve cavity 121 , the second valve cover 130 is provided with a second valve cavity 131 , the first valve cavity 121 and the second valve cavity 131 are respectively provided with valve core assemblies 300 , and the valve core assembly 300 is provided with a pressure relief hole.

[0040] like Figure 4 , Figure 5 As shown, the first valve body 110 is cylindrical as a whole, with both ends open, and a partition 114 is provided in the middle of the inner cavity. The partition 114 divides the inner cavity of the first valve body 110 into a first cavity 111 and a second cavity 112 that are independent of each other. A circular shoulder 115 is provided in the axial middle part of the outer circumference of the first valve body 110, and an exhaust hole 113 is provided on the shoulder 115. The exhaust hole 113 is connected to the first cavity 111 and the second cavity 112 respectively. A fixing ring 116 is also provided on the shoulder 115, and the first valve body 110 can be fixed in the top cover of the bubble water machine through the fixing ring 116. Step holes 117 are provided at both ends of the inner cavity of the first valve body 110. The first valve cover 120 and the second valve cover 130 are respectively connected and fixed to the two ends of the first valve body 110 by threads.

[0041] like Figure 6 , Figure 7 , Figure 8 As shown, the valve core assembly 300 includes a valve core 310, a guide sleeve 320 and a reset spring 330. The valve core 310 can be made of a flexible material, such as silicone. A hook 311 is provided at the inner end of the valve core 310, and an annular ridge 312 is provided on the outer end surface of the valve core 310. The diameter of the annular ridge 312 is respectively larger than the diameter of the air inlet of the two corresponding valve cavities. For example, the diameter of the annular ridge 312 is respectively larger than the diameter of the air inlet of the first valve cavity 121 and the second valve cavity 131, so as to achieve the function of closing the air inlet of the two corresponding valve cavities.

[0042] The guide sleeve 320 is a cylinder with open ends, which is adapted to the first valve cavity 121 and the second valve cavity 131. An annular clamping ring 321 is provided on the inner wall of the guide sleeve 320 (see Figure 2 ), the inner end of the valve core 310 is inserted into the guide sleeve 320, and the hook 311 is fixed with the annular clamp ring 321, which is convenient for folding and assembling. After the valve core 310 or the guide sleeve 320 is damaged, it can be easily replaced separately to reduce costs.

[0043] A step shaft 322 is provided on the outer circumferential surface of one end of the guide sleeve 320 away from the air inlet, and the step shaft 322 is used to abut against the step hole 117 on the first valve body 110 for limiting position. The pressure relief hole 323 is provided on the end surface of the step shaft 322, which simplifies the process and facilitates processing. The return spring 330 is provided in the guide sleeve 320, one end of which is sleeved on the inner end of the valve core 310, and the other end abuts against the partition 114.

[0044] The pressure relief hole 323 may also be configured as a pressure relief groove axially arranged along the outer circumferential surface of the guide sleeve 320 .

[0045] The air inlet 151 of the three-way connector 150 is used to connect the pressure relief pipe of the bubble water machine, and the pressure relief pipe of the bubble water machine is connected to the pressure relief chamber of the bubble water machine. The gas in the pressure relief chamber acts on the valve core 310 of the first valve chamber 121 and the second valve chamber 131 respectively through the first conduit 140 and the second conduit 160.

[0046] At least one valve core assembly 300 in the first valve cavity 121 and the second valve cavity 131 can move axially along the first valve cavity 121 or the second valve cavity 131 under the action of the gas pressure in the pressure relief cavity, so that the first conduit 140 or the second conduit 160 is connected to the exhaust hole 113 through the pressure relief hole 323, respectively, to achieve the automatic pressure relief protection function. When any valve core assembly in the first valve cavity 121 or the second valve cavity 131 is stuck, the other valve core assembly can automatically open to complete the automatic pressure relief function, thereby achieving a dual protection function. The reset spring 330 is used to reset the valve core assembly after the pressure relief is completed.

[0047] The combined double-insurance automatic pressure relief valve provided by the utility model has the following working principle:

[0048] The pressure gas in the pressure relief chamber of the bubble water machine acts on the valve core 310 in the first valve chamber 121 and the second valve chamber 131 through the first conduit 140 and the second conduit 160 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 330, the valve core components in the first valve chamber 121 and the second valve chamber 131 are kept in the state of Figure 2 In the closed position shown, the annular ridge 312 blocks the air inlets of the first valve cavity 121 and the second valve cavity 131 .

[0049] When the thrust of the gas in the pressure relief chamber of the bubble water machine on the valve core 310 is greater than the elastic force of the reset spring 330, at least one valve core assembly in the first valve chamber 121 and the second valve chamber 131 is pushed to move in the direction away from the air inlet of the respective valve chamber, and the annular ridge 312 opens the air inlet of the first valve chamber 121 or the second valve chamber 131. The gas in the pressure relief chamber of the bubble water machine enters the first chamber 111 or the second chamber 112 of the first valve body through the gap between the guide sleeve 320 and the inner wall of the first valve chamber 121 or the second valve chamber 131 and the pressure relief hole 323, and is finally discharged through the exhaust hole 113 to release the pressure.

[0050] When the pressure drops to a level less than the elastic force of the return spring 330 , the return spring 330 is reset, pushing the valve core assembly to move toward the air inlet, and the annular ridge 312 closes the air inlet.

[0051] Normally, the elastic forces of the springs in the two valve core assemblies are the same. When the set pressure is reached, the valve core assemblies in the first valve chamber 121 and the second valve chamber 131 will open at the same time. Due to manufacturing errors, any one of them may be opened randomly.

[0052] The elastic force of one of the springs in the two valve core assemblies can also be set to be smaller than the elastic force of the other spring. In this way, when the set pressure is reached, the valve core assembly with smaller elastic force is opened first for pressure relief protection. When the valve core assembly is stuck, the valve core assembly with larger elastic force can automatically open under greater pressure.

[0053] Based on the description of the above specific embodiments, the combined double-insurance automatic pressure relief valve provided by the utility model has the following advantages compared with the prior art:

[0054] First, two valve core assemblies are arranged in a valve body. When one valve core assembly is stuck, the other valve core assembly can be automatically opened to release pressure, thus realizing a dual protection function and further improving the safety of the use of the bubble water machine.

[0055] Second, a guide sleeve is provided on the valve core of the valve core assembly, and the guide sleeve is adapted to the diameter of the valve cavity. The guide sleeve enables the valve core assembly to move more smoothly in the valve cavity, with a fast response speed, and can prevent the valve core from tilting and getting stuck during movement.

[0056] Third, the valve core and the guide sleeve are connected in a detachable manner, which is convenient for disassembly and assembly, and can be replaced separately, reducing costs.

[0057] Fourthly, a circular shoulder is provided in the axial middle portion of the outer circumferential surface of the valve body, and the exhaust hole is arranged on the shoulder and is communicated with the first cavity and the second cavity respectively, thereby simplifying the manufacturing process.

[0058] Finally, it should be noted that the terms "comprises", "includes" or any other variants thereof as used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0059] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware of the structural changes made under the inspiration of the present invention. All technical solutions that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A combined double-safety automatic pressure relief valve, comprising a first valve body, characterized in that: The first valve body includes two valve chambers separated along the axial direction. An exhaust hole is provided on the first valve body, which is connected to the two valve chambers respectively. Valve core assemblies are respectively provided in the two valve chambers. At least one of the valve core assemblies in the two valve chambers moves axially along the corresponding valve chamber under the action of the gas pressure in the pressure relief chamber to open or close the air inlet of the corresponding valve chamber, so that the air inlet of the corresponding valve chamber is connected to or closed by the exhaust hole.

2. The combined double insurance automatic pressure relief valve according to claim 1 is characterized in that: A first valve cover and a second valve cover are respectively provided at both ends of the first valve body, and the first valve body is axially divided into a first cavity and a second cavity that are independent of each other, and the exhaust hole is arranged in the middle of the first valve body and is communicated with the first cavity and the second cavity respectively; the air inlet on the first valve cover is connected to the first air outlet of the three-way joint through a first conduit, and the air inlet on the second valve cover is connected to the second air outlet of the three-way joint through a second conduit; the two valve cavities include a first valve cavity and a second valve cavity, which are respectively arranged on the first valve cover and the second valve cover; at least one of the valve core components in the first valve cavity and the second valve cavity moves axially along the first valve cavity or the second valve cavity under the action of the gas pressure in the pressure relief cavity, so that the first conduit or the second conduit is communicated with the exhaust hole.

3. The combined double-safety automatic pressure relief valve according to claim 2 is characterized in that: The inner cavity of the first valve body is axially divided into the first cavity and the second cavity which are independent of each other by a partition.

4. The combined double-safety automatic pressure relief valve according to claim 3 is characterized in that: The valve core assembly includes a valve core, a guide sleeve and a reset spring. The valve core is made of a flexible material and is provided with an annular ridge on the outer end surface. The diameter of the annular ridge is respectively larger than the diameter of the air inlet of the two valve cavities. The guide sleeve is mounted on the valve core. The reset spring is arranged in the guide sleeve, one end of which is fixed to the valve core and the other end is against the partition.

5. The combined double-safety automatic pressure relief valve according to claim 4 is characterized in that: The valve core assembly is provided with a pressure relief hole, and the first conduit or the second conduit is communicated with the exhaust hole through the pressure relief hole respectively.

6. The combined double insurance automatic pressure relief valve according to claim 4 is characterized in that: The inner end of the valve core is provided with a hook, the inner wall of the guide sleeve is provided with an annular clamping ring, the inner end of the valve core is inserted into the guide sleeve, and the hook is fixedly engaged with the annular clamping ring.

7. The combined double-safety automatic pressure relief valve according to claim 4 is characterized in that: The first valve body is cylindrical and open at both ends. An annular shoulder is provided in the axial middle portion of the outer circumference of the first valve body. The exhaust hole is arranged on the shoulder. The exhaust hole is communicated with the first cavity and the second cavity respectively.

8. The combined double-safety automatic pressure relief valve according to claim 7 is characterized in that: A fixing ring is also provided on the shaft shoulder.

9. The combined double-safety automatic pressure relief valve according to claim 5, characterized in that: Step holes are respectively provided at both ends of the inner cavity of the first valve body, a step shaft is provided on the outer circumferential surface of one end of the guide sleeve facing the first valve body, the end surface of the step shaft is used to abut against the step hole on the first valve body, and the pressure relief hole is arranged on the end surface of the step shaft.

10. The combined double insurance automatic pressure relief valve according to claim 4, characterized in that: The valve core is made of silicone.

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