Bubble water machine and dual-protection automatic pressure relief device thereof

Abstract

The utility model discloses a bubble water machine and a dual protection automatic pressure relief device thereof, the dual protection automatic pressure relief device comprises an inflation seat, the inflation seat is provided with an inflation joint and a first pressure relief joint, the bottom surface of the inflation seat is provided with a pipe joint, the bottom surface of the inflation seat forms a pressure relief cavity around the pipe joint, and the first pressure relief joint is provided with a second pressure relief joint. The first-stage pressure relief valve is connected with the first pressure relief connector through a first pressure relief pipe, and the second-stage pressure relief valve is arranged on the inflation base and communicated with the pressure relief cavity. According to the bubble water machine, the double-protection automatic pressure relief device is arranged, when the first-stage pressure relief valve loses efficacy, pressure can be automatically relieved through the second-stage pressure relief valve, the double-protection function is achieved, and the use safety of the bubble water machine is improved. In addition, the pressure relief process is completely automatic, 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, in particular to a bubble water machine and a double protection automatic pressure relief device thereof. Background Art

[0002] The sparkling water machine can pressurize carbon dioxide gas into a water bottle to make sparkling water. During the process of making sparkling water, the air pressure in the water bottle will continue to rise. If the air pressure in the water bottle is too high, on the one hand, it may cause safety problems such as the water bottle bursting, and on the other hand, when the water bottle is removed, the water in the water bottle may splash. For this reason, the sparkling water machine will be equipped with an automatic pressure relief protection device. When the air pressure in the water bottle reaches the set pressure, it will automatically open the pressure relief protection device to relieve the pressure and ensure safety in use.

[0003] The automatic pressure relief device of the existing sparkling water machine only has one pressure relief valve. Once the valve core is stuck, the automatic pressure relief function will be lost, which poses a safety hazard. Utility Model Content

[0004] In view of this, the utility model provides a bubble water machine and a double protection automatic pressure relief device thereof to solve the problem of potential safety hazards in the prior art of setting an automatic pressure relief valve.

[0005] The double protection automatic pressure relief device of the bubble water machine provided by the utility model comprises an inflation seat, an inflation joint and a first pressure relief joint are arranged on the inflation seat, a pipe joint is arranged on the bottom surface of the inflation seat, and further comprises:

[0006] A first-stage pressure relief valve connected to the first pressure relief joint via a first pressure relief pipe;

[0007] A secondary pressure relief valve, a pressure relief chamber is formed on the bottom surface of the inflation seat around the pipe joint, and the secondary pressure relief valve is arranged on the inflation seat and communicated with the pressure relief chamber.

[0008] The double protection automatic pressure relief device of the above-mentioned bubble water machine includes a primary pressure relief valve and a secondary pressure relief valve. When the primary pressure relief valve fails, the pressure can be automatically relieved through the secondary pressure relief valve, thereby realizing the double protection function, improving the safety of the bubble water machine and facilitating its use.

[0009] In the above technical solution, preferably, the inflatable seat is further provided with a second pressure relief joint, and the second pressure relief joint is connected to a manual pressure relief valve through a second pressure relief pipe. Even if both the primary pressure relief valve and the secondary pressure relief valve fail, the pressure can still be relieved through the manual pressure relief valve, further improving the safety of the use of the bubble water machine.

[0010] In the above technical solution, preferably, the first-level pressure relief valve includes two valve chambers arranged along the axial direction and exhaust holes respectively connected to the two valve chambers, and valve core assemblies are respectively arranged in the two valve chambers. At least one of the valve core assemblies 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 pressure relief chamber connected or closed with the exhaust hole. In the first-level pressure relief valve, two valve core assemblies are arranged, and when one of the valve core assemblies is stuck, the other valve core assembly can be automatically opened for pressure relief, realizing a dual protection function and further improving the safety of the use of the bubble water machine.

[0011] In the above technical solution, preferably, the first-level pressure relief valve includes:

[0012] A first valve body is axially divided into a first cavity and a second cavity which are independent of each other, wherein the exhaust hole is arranged in the middle of the first valve body and communicates with the first cavity and the second cavity respectively;

[0013] The first valve body, the first valve cover and the first valve body, the second valve cover are respectively arranged at two ends of the first valve body, the air inlet on the first valve cover of the first valve body is connected to the first air outlet of the three-way joint through the first conduit, and the air inlet on the second valve cover of the first valve body is connected to the second air outlet of the three-way joint through the second conduit; the two valve chambers include the first valve chamber of the first valve body and the second valve chamber of the first valve body, which are respectively arranged on the first valve cover of the first valve body and the second valve cover of the first valve body;

[0014] 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 connected to the exhaust hole.

[0015] The above is the first implementation scheme of the first-stage pressure relief valve, which has a simple structure and reliable functions.

[0016] In the above technical solution, preferably, the first-level pressure relief valve includes:

[0017] The second valve body is axially divided into a second valve body first valve cavity and a second valve body second valve cavity which are independent of each other, forming the two valve cavities, and the second valve body is provided with an air inlet connector, which is respectively connected with the second valve body first valve cavity and the second valve body second valve cavity;

[0018] The first valve cover of the second valve body and the second valve cover of the second valve body are respectively arranged at two ends of the second valve body, and the exhaust hole includes a first exhaust hole and a second exhaust hole, which are respectively arranged on the first valve cover of the second valve body and the second valve cover of the second valve body;

[0019] 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 air inlet connector is connected to the first exhaust hole and the second exhaust hole respectively.

[0020] The above is the second implementation scheme of the first-stage pressure relief valve, which adopts an integrated design, has a more compact structure, occupies less space, and is easy to assemble.

[0021] In the above technical solution, preferably, the second valve body and the second valve cover are provided with an exhaust plug, and the outer end surface of the second valve body and the second valve cover is provided with a circular tube, the outer end of the circular tube is closed, and the outer side wall of the circular tube has a whistle hole; the exhaust plug includes a circular sleeve, the circular sleeve is open at one end toward the air inlet connector and is closed at the other end, and a cylindrical positioning column is provided on the outer end surface of the closed end, and the positioning column is cut along the axial direction to form a cutting plane, and the inner cavity of the circular sleeve is opened, and the second exhaust hole is formed between the cutting plane and the inner wall of the circular tube. This preferred solution can emit a whistle prompt while achieving double pressure relief protection, further improving the safety of use. In addition, the structure is simple and compact.

[0022] In the above technical solution, preferably, 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 an annular ridge is provided 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 sleeved on the valve core, and the reset spring is arranged in the guide sleeve, with one end fixed to the valve core and the other end abutting and fixed in the corresponding valve cavity. In the valve core assembly structure, a guide sleeve is sleeved on the valve core, and the guide sleeve is adapted to the diameter of the valve cavity. The guide sleeve makes the valve core assembly 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.

[0023] 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. In this solution, the valve core and the guide sleeve are detachably connected, which is convenient for disassembly and assembly, and can be replaced separately, thereby reducing costs.

[0024] In the above technical solution, preferably, the secondary pressure relief valve includes a secondary valve core, a valve stem, an adjusting nut and an adjusting spring, the secondary valve core is fixed to the lower end of the valve stem, a secondary valve cavity is provided on the top surface of the inflation seat, the lower end of the secondary valve cavity is provided with a first pressure relief channel connected to the pressure relief cavity, the secondary valve core and the valve stem are arranged in the secondary valve cavity, the adjusting spring is sleeved on the valve stem, the adjusting nut is threadedly installed on the upper end of the secondary valve cavity, the lower end of the adjusting nut is pressed on the upper end of the adjusting spring, and the adjusting nut is provided with a second pressure relief channel connected to the secondary valve cavity.

[0025] The utility model also provides a bubble water machine, comprising a base and a body arranged at one end of the base, a machine cover is provided at the upper end of the body, the other end of the machine cover is located outside the body, and a water bottle connecting seat is provided on the bottom surface, and any of the above-mentioned double protection automatic pressure relief devices is provided inside the machine cover.

[0026] It can be seen from the above technical solutions that the bubble water machine and its double protection automatic pressure relief device provided by the utility model solve the problem of potential safety hazards in the prior art. Compared with the prior art, the utility model has the following beneficial effects:

[0027] The bubble water machine is equipped with a double protection automatic pressure relief device, including a primary pressure relief valve and a secondary pressure relief valve. When the primary pressure relief valve fails, the secondary pressure relief valve can automatically release the pressure, achieving a double protection function and improving the safety of the bubble water machine. In addition, the pressure relief process is completely automatic, without manual operation, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 A schematic diagram of a bubble water machine provided by the utility model;

[0030] Figure 2 for Figure 1 A cross-sectional view of the sparkling water machine shown;

[0031] Figure 3 for Figure 1 The schematic diagram of the sparkling water machine behind the hidden cover is shown. Figure 3 The double protection automatic pressure relief device for the sparkling water is also shown;

[0032] Figure 4 It is a cross-sectional view of the inflatable structure in the utility model;

[0033] Figure 5 It is a schematic diagram of Example 1 of a first-stage pressure relief valve in the utility model;

[0034] Figure 6 for Figure 5 A cross-sectional view of embodiment 1 of the first-stage pressure relief valve shown;

[0035] Figure 7 for Figure 5 The exploded structural diagram of the embodiment 1 of the first-stage pressure relief valve is shown;

[0036] Figure 8 It is a schematic diagram of the first valve body in Example 1 of the first-stage pressure relief valve;

[0037] Fig. 9 for Figure 8 A cross-sectional view of the first valve body shown;

[0038] Fig.10 It is a schematic diagram of the exploded structure of the valve core assembly;

[0039] Fig.11 is a schematic diagram of the valve core;

[0040] Fig.12 for Fig.11 A cross-sectional view of the valve core shown;

[0041] Fig.13 It is a schematic diagram of Example 2 of a first-stage pressure relief valve in the utility model;

[0042] Fig.14 for Fig.13 A cross-sectional view of embodiment 2 of the first-stage pressure relief valve shown;

[0043] Fig.15 for Fig.13 The exploded structural diagram of the embodiment 2 of the first-stage pressure relief valve is shown;

[0044] Fig.16 is a schematic diagram of the exhaust plug;

[0045] Fig.17 for Fig.16 A cross-sectional view of the exhaust plug shown;

[0046] Fig.18 It is a schematic diagram of Example 2 of the first-stage pressure relief valve after being assembled on a sparkling water machine;

[0047] Fig.19 for Figure 4 Enlarged view of part A in .

[0048] Figure 1-Figure 19In the figure, the corresponding relationship of the parts is as follows:

[0049] Base 10, machine body 20, carbon dioxide gas storage cylinder 30, machine cover 40, water bottle connecting seat 50, water bottle 60, inflation mechanism 70, secondary pressure relief valve 80, primary pressure relief valve first embodiment 100, primary pressure relief valve second embodiment 200, valve core assembly 300;

[0050] Inflating seat 51, inflating joint 52, first pressure relief joint 53, inflating pipe 54, pipe joint 55, inflating rod 56, pressure relief chamber 57;

[0051] Inflating valve 71, operating mechanism 72;

[0052] A first pressure relief pipe 91, a second pressure relief pipe 92, and a manual pressure relief valve 93;

[0053] 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;

[0054] First cavity 111, second cavity 112, exhaust hole 113, partition 114, shaft shoulder 115, fixing ring 116, step hole 117;

[0055] The first valve body and the first valve cavity 121,

[0056] The first valve body and the second valve chamber 131,

[0057] Air inlet 151;

[0058] Valve core 310, guide sleeve 320, return spring 330;

[0059] Hook 311, annular ridge 312, annular snap ring 321, stepped shaft 322;

[0060] The second valve body 210, the second valve body first valve cover 240, the second valve body second valve cover 250,

[0061] A first valve cavity 211 of a second valve body, a second valve cavity 212 of a second valve body, and an air inlet connector 213;

[0062] A first exhaust hole 241, a second exhaust hole 251, an exhaust plug 252, a round tube 253, and a whistle hole 254;

[0063] Round sleeve 2521, positioning column 2522, cutting plane 2523;

[0064] Secondary valve core 811, valve stem 812, adjusting nut 813, adjusting spring 814, second pressure relief channel 815, adjusting part 816;

[0065] Secondary valve chamber 511 and first pressure relief channel 512 . DETAILED DESCRIPTION

[0066] 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.

[0067] 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.

[0068] 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.

[0069] Sparkling water is drinking water containing carbon dioxide bubbles, which can be prepared by adding carbon dioxide gas into a water bottle through a sparkling water machine. When the pressure of the sparkling water machine to inflate the water bottle is too high, the pressure can be automatically released through the automatic pressure relief valve to prevent safety hazards caused by excessive pressure. In order to prevent the valve core of the automatic pressure relief valve from getting stuck and losing the pressure relief protection function, the utility model provides a sparkling water machine and a dual protection automatic pressure relief device thereof. By setting a two-stage pressure relief valve, a two-stage dual protection function is realized, thereby improving the safety of the sparkling water machine.

[0070] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the bubble water machine provided by the utility model. Figure 2 for Figure 1 A cross-sectional view of the sparkling water machine shown, Figure 3 for Figure 1 The schematic diagram of the sparkling water machine behind the hidden cover is shown. Figure 3 The double protection automatic pressure relief device for sparkling water is also shown.

[0071] like Figure 1 , Figure 2 , Figure 3As shown, a bubble water machine provided by the utility model includes a base 10, one end of which is provided with a body 20, and a carbon dioxide gas storage cylinder 30 is provided in the body 20. A cover 40 is provided at the upper end of the body 20, and the other end of the cover 40 extends out of the body 20 and is located outside the body 20, and a water bottle connecting seat 50 is provided on the bottom surface, and the water bottle connecting seat 50 is used to connect a water bottle 60. An air charging mechanism 70 is provided in the cover 40, and the air charging mechanism 70 includes an air charging valve 71 and an operating mechanism 72, and the air charging valve 71 is connected to the carbon dioxide gas storage cylinder 30. By pressing the operating mechanism 72, the air charging valve 71 can be opened, and the carbon dioxide gas in the carbon dioxide gas storage cylinder 30 is added to the water bottle 60 to prepare bubble water.

[0072] like Figure 3 , Figure 4 As shown, an inflatable seat 51 is provided at the upper end of the water bottle connection seat 50, and an inflatable joint 52 and a first pressure relief joint 53 are provided on the inflatable seat 51. The inflatable joint 52 is connected to the inflatable valve 71 through an inflatable pipe 54. A pipe joint 55 is provided on the bottom surface of the inflatable seat 51, and an inflatable rod 56 is connected to the pipe joint 55. The inflatable rod 56 is inserted into the water bottle 60 to add carbon dioxide gas into the water bottle 60. A pressure relief cavity 57 is formed on the bottom surface of the inflatable seat 51 around the pipe joint 55, and the pressure relief cavity 57 is communicated with the inner cavity of the water bottle 60.

[0073] The double protection automatic pressure relief device is arranged in the cover 40, including a primary pressure relief valve 100 and a secondary pressure relief valve 80, wherein the secondary pressure relief valve 80 is arranged on the outer wall of the inflatable seat 51 and communicates with the pressure relief chamber 57. The primary pressure relief valve 100 is connected to the first pressure relief joint 53 through the first pressure relief pipe 91. The secondary pressure relief valve 80 can be arranged on the top wall of the inflatable seat 51. In addition, one or more secondary pressure relief valves 80 can be arranged.

[0074] Normally, when the gas pressure in the pressure relief chamber 57 is higher than the set value, the primary pressure relief valve 100 automatically opens for pressure relief protection. When the primary pressure relief valve 100 fails, the secondary pressure relief valve 80 automatically opens for pressure relief protection, thus realizing a two-stage dual automatic pressure relief protection function, improving the safety of the bubble water machine, and eliminating the need for manual operation, making it easy to use.

[0075] A second pressure relief joint is also provided on the inflation seat 51, and the second pressure relief joint is connected to the manual pressure relief valve 93 through the second pressure relief pipe 92, which is used for manual pressure relief in an emergency situation when both the first pressure relief valve 100 and the second pressure relief valve 80 fail, thereby further improving the safety of use.

[0076] In the utility model, the first-stage pressure relief valve includes two valve chambers arranged along the axial direction and exhaust holes respectively connected to the two valve chambers. The two valve chambers are respectively provided with valve core components. 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 of the pressure relief chamber, opens or closes the air inlet of the corresponding valve chamber, and connects or closes the pressure relief chamber with the exhaust hole. This structure enables that when any one of the two valve core components in the first-stage pressure relief valve is stuck, the other valve core component can be automatically opened to complete the automatic pressure relief function, realize the dual protection function of the second-stage pressure relief, and further improve the safety of the use of the bubble water machine.

[0077] In the present utility model, the first-stage pressure relief valve can be implemented by the following two embodiments.

[0078] Example 1.

[0079] In the present application, the embodiment 1 of the first-stage pressure relief valve provides a combined double-safety automatic pressure relief valve 100. Figure 5 , Figure 6 and Figure 7 The detailed composition structure and working principle of the combined double-safety automatic pressure relief valve provided in Example 1 are specifically introduced.

[0080] like Figure 5 , Figure 6 and Figure 7 As shown, the combined double insurance automatic pressure relief valve 100 provided in Example 1 includes a first valve body 110 and a first valve body first valve cover 120 and a first valve body second valve cover 130 respectively arranged at both ends of the first valve body 110. The air inlet on the first valve body first valve cover 120 is connected to the first air outlet of the three-way joint 150 through the first conduit 140, and the air inlet on the first valve body second valve cover 130 is connected to the second air outlet of the three-way joint 150 through the second conduit 160.

[0081] The first valve body 110 is divided into a first cavity 111 and a second cavity 112 which are independent of each other along its axial direction. The outer ends of the first cavity 111 and the second cavity 112 are respectively connected to the first valve body first valve cover 120 and the first valve body 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 cavity 111 and the second cavity 112.

[0082] The two valve chambers of the combined double-insurance automatic pressure relief valve 100 include a first valve body first valve chamber 121 and a first valve body second valve chamber 131. The first valve body first valve chamber 121 is arranged on the first valve body first valve cover 120, and the first valve body second valve chamber 131 is arranged on the first valve body second valve cover 130. The first valve body first valve chamber 121 and the first valve body second valve chamber 131 are respectively provided with valve core assemblies 300, and pressure relief holes are provided on the valve core assemblies 300.

[0083] like Figure 8 , Fig. 9 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 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 of the first valve body and the second valve cover 130 of the first valve body are respectively threaded and fixed to the first valve body 110.

[0084] like Fig.10 , Fig.11 , Fig.12 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 of the first valve body and the second valve cavity 131 of the first valve body, so as to achieve the function of closing the air inlet of the two corresponding valve cavities.

[0085] The guide sleeve 320 is a cylinder with two open ends, adapted to two corresponding valve chambers, for example, adapted to the first valve chamber 121 of the first valve body and the second valve chamber 131 of the first valve body. An annular retaining ring 321 is provided on the inner wall of the guide sleeve 320 (see Figure 6 ), 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.

[0086] 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 .

[0087] 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 adapted to the step hole 117 on the first valve body 110. A pressure relief hole 323 is provided on the end surface of the step shaft 322. A 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 of which is against the partition plate 114 and fixed in the corresponding valve cavity.

[0088] 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 of the first valve body and the second valve chamber 131 of the first valve body via the first conduit 140 and the second conduit 160 respectively.

[0089] At least one valve core assembly 300 in the first valve cavity and the second valve cavity can move axially along the first valve cavity 121 of the first valve body or the second valve cavity 131 of the first valve body under the action of the gas pressure of the pressure relief cavity, so that the first conduit 140 and the second conduit 160 are connected to the exhaust hole 113 through the pressure relief hole, respectively, to achieve the automatic pressure relief protection function. When any valve core assembly in the first valve cavity 121 of the first valve body or the second valve cavity 131 of the first valve body 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.

[0090] The combined double-safety automatic pressure relief valve provided in Example 1 has the following working principle:

[0091] 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 of the first valve body and the second valve chamber 131 of the first valve body 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 of the first valve body and the second valve chamber 131 of the first valve body 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 of the first valve body and the second valve cavity 131 of the first valve body.

[0092] 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, the valve core assembly in the first valve chamber 121 of the first valve body or the second valve chamber 131 of the first valve body is pushed to move in the direction away from the air inlet of the respective valve chambers, and the annular ridge 312 opens the air inlet of the first valve chamber 121 of the first valve body or the second valve chamber 131 of the first valve body, and the gas in the pressure relief chamber of the bubble water machine enters the first chamber or the second chamber of the first valve body through the gap between the guide sleeve 320 and the inner wall of the first valve chamber 121 of the first valve body or the second valve chamber 131 of the first valve body and the pressure relief hole, and is finally discharged through the exhaust hole 113 to release the pressure.

[0093] 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.

[0094] Normally, the elastic force of the return springs in the two valve core assemblies is the same. When the set pressure is reached, the two valve core assemblies open at the same time for pressure relief protection. When one valve core assembly is stuck, the other can open automatically to complete the pressure relief protection. In the case of manufacturing errors, any one of the valve core assemblies may also open.

[0095] The elastic force of one of the return springs of the two valve core assemblies can also be set to be smaller than the elastic force of the other return 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 the action of greater pressure.

[0096] The combined double-safety automatic pressure relief valve provided in Example 1 is assembled on the bubble water machine as follows: Figure 3 shown.

[0097] Example 2.

[0098] Embodiment 2 of the first-stage pressure relief valve in the present application provides an integrated double-safety automatic pressure relief valve 200. Fig.13 , Fig.14 and Fig.15 The detailed composition structure and working principle of the integrated double-safety automatic pressure relief valve provided in Example 2 are specifically introduced.

[0099] like Fig.13 , Fig.14 and Fig.15 As shown, the integrated double-safety automatic pressure relief valve provided in Example 2 includes a second valve body 210, which is divided into a second valve body first valve cavity 211 and a second valve body second valve cavity 212 along its axial direction, forming two valve cavities. The outer ends of the second valve body first valve cavity 211 and the second valve body second valve cavity 212 are respectively opened, and the second valve body 210 is provided with an air intake connector 213, which is respectively connected to the second valve body first valve cavity 211 and the second valve body second valve cavity 212.

[0100] A valve core assembly 300 is respectively disposed in the first valve cavity 211 of the second valve body and the second valve cavity 212 of the second valve body. The valve core assembly 300 adopts the same structure as that of Example 1, and its specific structure has been described in detail in Example 1 and will not be repeated here.

[0101] The air inlet connector 213 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 assembly 300 in the first valve chamber 211 of the second valve body and the second valve chamber 212 of the second valve body respectively through the air inlet connector 213.

[0102] The outer end of the second valve body first valve cavity 211 is connected to the second valve body first valve cover 240, and the outer end of the second valve body second valve cavity 212 is connected to the second valve body second valve cover 250. In this embodiment 2, the exhaust hole includes a first exhaust hole 241 and a second exhaust hole 251, the first exhaust hole 241 is arranged on the second valve body first valve cover 240, and the second exhaust hole 251 is arranged on the second valve body second valve cover 250.

[0103] At least one valve core assembly 300 in the first valve cavity 211 and the second valve cavity 212 can move axially along the first valve cavity 211 and the second valve cavity 212 of the second valve body under the effect of the gas pressure in the pressure relief cavity, so that the air inlet joint 213 is connected to the first exhaust hole 241 and the second exhaust hole 251 through the pressure relief hole, respectively, to realize the automatic pressure relief protection function. When any valve core assembly in the first valve cavity 211 and the second valve cavity 212 of the second valve body is stuck, the other valve core assembly can automatically open the air inlet of the corresponding valve cavity to complete the automatic pressure relief function, thus realizing the dual protection function.

[0104] The second valve body and the second valve cover 250 also have a whistle reminder function, and the specific structure is as follows:

[0105] An exhaust plug 252 is provided in the second valve body and the second valve cover 250. A round tube 253 is provided on the outer end surface of the second valve body and the second valve cover 250. The outer end of the round tube 253 is closed. A whistle hole 254 is provided on the outer wall of the round tube 253. The cross section of the whistle hole 254 is a right-angle trapezoid, and the waist of the right angle is located at the exhaust plug 252. The second exhaust hole 251 is arranged along the axial direction of the exhaust plug 252.

[0106] like Fig.16 , Fig.17 As shown, the exhaust plug 252 includes a round sleeve 2521, which is open at one end facing the air inlet connector 213 and closed at the other end. A cylindrical positioning column 2522 is provided on the outer end surface of the closed end. The positioning column 2522 is cut along the axial direction to form a cutting plane 2523, and the inner cavity of the round sleeve 2521 is opened, and a second exhaust hole 251 is formed between the cutting 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.

[0107] The working principle of the integrated double-safety automatic pressure relief valve provided in Example 2 is as follows:

[0108] The gas in the pressure relief chamber of the bubble water machine acts on the valve cores in the first valve chamber 211 of the second valve body and the second valve chamber 212 of the second valve body through the air inlet joint 213. 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 components in the first valve chamber 211 of the second valve body and the second valve chamber 212 of the second valve body are kept in the state of being closed. Fig.14In the closed position shown, the annular ridge 312 blocks the air inlets of the first valve cavity 211 of the second valve body and the second valve cavity 212 of the second valve body.

[0109] 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 component in the first valve chamber 211 of the second valve body and the second valve chamber 212 of the second valve body is pushed to move in the direction away from the air inlet of the respective valve chambers, and the annular ridge 312 opens the air inlet of the first valve chamber 211 of the second valve body or the second valve chamber 212 of the second valve body, and the gas in the pressure relief chamber of the bubble water machine enters the inner cavity of the first end cover or the second end cover through the gap between the guide sleeve 221 and the inner wall of the first valve chamber 211 of the second valve body or the second valve chamber 212 of the second valve body and the pressure relief hole, and is finally discharged through the first exhaust hole and the second exhaust hole to release the pressure.

[0110] When the pressure drops to less than the elastic force of the reset spring 330, the reset spring 330 resets, pushing the valve core assembly to move toward the air inlet of the respective valve cavity, and the annular ridge 312 closes the air inlet of the first valve cavity 211 of the second valve body or the second valve cavity 212 of the second valve body.

[0111] The integrated double-safety automatic pressure relief valve provided in Example 2 is assembled on the sparkling water machine as follows: Fig.18 shown.

[0112] Embodiment 2 provides two application forms, one with a whistle reminder and one without a whistle reminder. In the application form without a whistle reminder, the second valve cover 250 of the second valve body can be replaced with an exhaust plug 252, connected to the outer end of the second valve cavity 212 of the second valve body, the whistle function is cancelled, and only the double pressure relief protection function is retained.

[0113] In an application form without a whistle prompt, similar to Example 1, the elastic forces of the return springs in the two valve core assemblies may be the same or different.

[0114] In the application form with whistle prompt, the elastic force of the return spring in the valve core assembly in the second valve chamber is smaller than the elastic force of the return spring in the valve core assembly in the first valve chamber. In this way, when the set pressure is reached, the valve core assembly in the second valve chamber is first opened for pressure relief protection, and when the valve core assembly is stuck, the valve core assembly in the first valve chamber is automatically opened.

[0115] The integrated double-safety automatic pressure relief valve provided in Example 2 adopts an integrated structural design, which is simple and compact in structure, occupies little space, and is easy to assemble.

[0116] See also Fig.19The secondary pressure relief valve 80 in the utility model includes a secondary valve core 811, a valve stem 812, an adjusting nut 813, and an adjusting spring 814. The secondary valve core 811 is fixed to the lower end of the valve stem 812. A secondary valve cavity 511 is provided on the top surface of the inflatable seat 51. The lower end of the secondary valve cavity 511 is provided with a first pressure relief passage 512 communicating with the pressure relief cavity 57. The secondary valve core 811 and the valve stem 812 are arranged in the secondary valve cavity 511. The adjusting spring 814 is sleeved on the valve stem 812. The adjusting nut 813 is threadedly installed on the upper end of the secondary valve cavity 511 to seal the upper end of the secondary valve cavity 511. The lower end of the adjusting nut 813 is pressed on the upper end of the adjusting spring 814. The adjusting nut 813 is provided with a second pressure relief channel 815 which is connected to the secondary valve chamber 511. An adjusting portion 816 is provided on the top surface of the adjusting nut 813, for example, an internal hexagonal structure is adopted. The adjusting nut 813 can be rotated by the adjusting portion 816 to adjust the pressure of the adjusting spring 814, thereby adjusting the pressure relief pressure of the secondary pressure relief valve 80.

[0117] When the pressure in the pressure relief chamber 57 is too high, the gas pushes the secondary valve core 811 upward, and the gas in the pressure relief chamber 57 is discharged through the first pressure relief channel 512, the secondary valve chamber 511 and the second pressure relief channel 815, thereby realizing the pressure relief function and ensuring safety in use.

[0118] Based on the description of the above specific embodiments, the bubble water machine and its double protection automatic pressure relief device and the bubble water machine and its double protection automatic pressure relief device provided by the utility model have the following advantages compared with the prior art:

[0119] First, the existing bubble water machine is only equipped with one automatic pressure relief valve, which will cause safety hazards when the automatic pressure relief valve fails. In the present application, the double protection automatic pressure relief device of the bubble water machine includes a primary pressure relief valve and a secondary pressure relief valve. When the primary pressure relief valve fails, the secondary pressure relief valve can automatically release pressure, thus realizing the double protection function and improving the safety of the bubble water machine.

[0120] Second, the existing bubble water machine is also equipped with an additional manual pressure relief valve on the basis of the automatic pressure relief valve. When the automatic pressure relief valve fails, the pressure is relieved through the manual pressure relief valve, but it is inconvenient to use. In the solution of the utility model, the primary pressure relief valve and the secondary pressure relief valve in the double protection automatic pressure relief device are both automatically controlled, without manual operation, and are more convenient to use.

[0121] Third, in the present application, two valve core assemblies are arranged in a valve body of the first-stage pressure relief valve. When one of the valve core assemblies is stuck, the other valve core assembly can automatically open to relieve pressure, thereby realizing a dual protection function and further improving the safety of the use of the bubble water machine.

[0122] Fourthly, 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.

[0123] Fifth, 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.

[0124] 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.

[0125] 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 double protection automatic pressure relief device for a sparkling water machine, comprising an inflatable seat, an inflatable joint and a first pressure relief joint are arranged on the inflatable seat, and a pipe joint is arranged on the bottom surface of the inflatable seat, characterized in that: Also includes: A first-stage pressure relief valve connected to the first pressure relief joint via a first pressure relief pipe; A secondary pressure relief valve, a pressure relief chamber is formed on the bottom surface of the inflation seat around the pipe joint, and the secondary pressure relief valve is arranged on the inflation seat and communicated with the pressure relief chamber.

2. The double protection automatic pressure relief device of the sparkling water machine according to claim 1, characterized in that: The inflatable seat is also provided with a second pressure relief joint, and the second pressure relief joint is connected to a manual pressure relief valve through a second pressure relief pipe.

3. The double protection automatic pressure relief device of the sparkling water machine according to claim 1, characterized in that: The first-stage pressure relief valve includes two valve chambers separated along the axial direction and exhaust holes respectively connected to the two valve chambers. The two valve chambers are respectively provided with valve core assemblies. 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 pressure relief chamber is connected to or closed with the exhaust hole.

4. The double protection automatic pressure relief device of the sparkling water machine according to claim 3, characterized in that: The primary pressure relief valve comprises: A first valve body is axially divided into a first cavity and a second cavity which are independent of each other, wherein the exhaust hole is arranged in the middle of the first valve body and communicates with the first cavity and the second cavity respectively; The first valve body, the first valve cover and the first valve body, the second valve cover are respectively arranged at two ends of the first valve body, the air inlet on the first valve cover of the first valve body is connected to the first air outlet of the three-way joint through the first conduit, and the air inlet on the second valve cover of the first valve body is connected to the second air outlet of the three-way joint through the second conduit; the two valve chambers include the first valve chamber of the first valve body and the second valve chamber of the first valve body, which are respectively arranged on the first valve cover of the first valve body and the second valve cover of the first valve body; 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 connected to the exhaust hole.

5. The double protection automatic pressure relief device of the sparkling water machine according to claim 3, characterized in that: The primary pressure relief valve comprises: The second valve body is axially divided into a second valve body first valve cavity and a second valve body second valve cavity which are independent of each other, forming the two valve cavities, and the second valve body is provided with an air inlet connector, which is respectively connected with the second valve body first valve cavity and the second valve body second valve cavity; The first valve cover of the second valve body and the second valve cover of the second valve body are respectively arranged at two ends of the second valve body, and the exhaust hole includes a first exhaust hole and a second exhaust hole, which are respectively arranged on the first valve cover of the second valve body and the second valve cover of the second valve body; 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 air inlet connector is connected to the first exhaust hole and the second exhaust hole respectively.

6. The double protection automatic pressure relief device of the sparkling water machine according to claim 5, characterized in that: An exhaust plug is provided in the second valve body and the second valve cover, and a circular tube is provided on the outer end surface of the second valve body and the second valve cover, the outer end of the circular tube is closed, and a whistle hole is provided on the outer side wall of the circular tube; the exhaust plug comprises a circular sleeve, which is open at one end toward the air inlet joint and closed at the other end, and a cylindrical positioning column is provided on the outer end surface of the closed end, and a cutting plane is formed on the positioning column by axial cutting, and the inner cavity of the circular sleeve is opened, and the second exhaust hole is formed between the cutting plane and the inner wall of the circular tube.

7. The double protection automatic pressure relief device of the sparkling water machine according to claim 3, characterized in that: 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, with one end fixed to the valve core and the other end abutting and fixed in the corresponding valve cavity.

8. The double protection automatic pressure relief device of the sparkling water machine according to claim 7, 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.

9. The double protection automatic pressure relief device of the sparkling water machine according to claim 1, characterized in that: The secondary pressure relief valve includes a secondary valve core, a valve stem, an adjusting nut and an adjusting spring. The secondary valve core is fixed to the lower end of the valve stem. A secondary valve cavity is provided on the top surface of the inflation seat. A first pressure relief passage communicating with the pressure relief cavity is provided at the lower end of the secondary valve cavity. The secondary valve core and the valve stem are arranged in the secondary valve cavity. The adjusting spring is sleeved on the valve stem. The adjusting nut is threadedly installed on the upper end of the secondary valve cavity. The lower end of the adjusting nut is pressed on the upper end of the adjusting spring. A second pressure relief passage communicating with the secondary valve cavity is provided on the adjusting nut.

10. A sparkling water machine, comprising a base and a body arranged at one end of the base, a cover is arranged at the upper end of the body, the other end of the cover is located outside the body, and a water bottle connection seat is arranged on the bottom surface, characterized in that: The machine cover is provided with a double protection automatic pressure relief device as described in any one of claims 1 to 9.

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