Bubble water machine with low-pressure maintaining function

Abstract

The invention discloses a sparkling water machine with a low-pressure maintaining function. The sparkling water machine comprises a main machine, a gas bottle, a water bottle, a first mounting seat, a first valve cavity, a first gas guide channel, a first valve body, a pressure feedback shutdown structure, an active exhaust valve body, an exhaust hole and a first reset spring. After bubble water is prepared, carbon dioxide gas in the water bottle can be directly and completely exhausted through the active exhaust valve body, and therefore the water bottle can be directly taken out. If a user does not need to drink directly after preparation is completed, active exhaust can be avoided through the active exhaust valve body, high-pressure carbon dioxide enters the first valve cavity through the first air guide channel and then is exhausted along the exhaust hole, and the amount of the exhausted carbon dioxide is controlled through the first valve body; and finally, the water bottle enters a low-pressure state with relatively low carbon dioxide gas concentration, and carbon dioxide in the bubble water is not easy to separate out due to the fact that certain carbon dioxide pressure is still kept in the water bottle, so that the concentration of the bubble water can be ensured, and residual pressure can be discharged when drinking is needed.

Description

Technical Field

[0001] The invention relates to the field of bubble water machines, in particular to a bubble water machine with a low-pressure maintaining function. Background Art

[0002] A sparkling water machine is a device for preparing sparkling water. This type of product generally includes a host and a water bottle. The water bottle is filled with water and then installed on the host. A carbon dioxide cylinder and a gas path connecting the carbon dioxide cylinder and the water bottle are provided in the host. The carbon dioxide cylinder is opened to control the high-pressure carbon dioxide gas to be injected into the water in the water bottle to prepare the sparkling water. When this type of product injects carbon dioxide gas, the water bottle is in a high-pressure state, and then the excess carbon dioxide gas in the water bottle needs to be discharged before the water bottle can be removed. However, when users prepare sparkling water, it is often not the time to drink the sparkling water. If the high-pressure carbon dioxide gas in the water bottle is directly discharged after the preparation is completed, the carbon dioxide in the sparkling water in the water bottle will continue to precipitate as the temperature and time go by, resulting in a low carbon dioxide concentration in the sparkling water when it needs to be drunk, and a poor taste. If the gas is not discharged after the preparation is completed, but before drinking, the water bottle will always be in an excessively high pressure state, which requires a high quality of the water bottle. If it goes on for a long time, it is easy to damage the water bottle. Summary of the invention

[0003] In order to solve the above problems, an object of the present invention is to provide a bubble water machine with a low pressure maintaining function.

[0004] The technical solution adopted by the present invention to solve the problem is: a bubble water machine with a low pressure maintaining function, comprising:

[0005] A host, wherein the host is provided with a gas cylinder, a water bottle and a gas path for connecting the gas cylinder and the water bottle, the gas path is provided with a gas valve, and the host is provided with a switch for controlling the gas valve;

[0006] a first mounting seat, the water bottle is detachably mounted on the first mounting seat, a first valve cavity is arranged in the first mounting seat, the first valve cavity is connected with the water bottle through a first air guide channel, an exhaust hole connected with the first valve cavity is arranged on the surface of the first mounting seat, and a pressure feedback shutdown structure and an active exhaust valve connected with the water bottle are also arranged on the first mounting seat;

[0007] The first valve body is arranged in the first valve cavity, and a sealing valve head is provided at the front end of the first valve body for sealing the end of the first air guide channel. The first valve body is connected to a first return spring for driving the first valve body to move toward the end of the first air guide channel, and the ratio of the effective air pressure bearing area of ​​the first valve body in the first valve cavity to the cross-sectional area of ​​the end of the first air guide channel is the pressure ratio of the shutdown air pressure and the low-pressure holding air pressure.

[0008] As a further improvement of the above technical solution, a sealing member matching with the inner wall of the first valve cavity is provided on the surface of the first valve body, a second valve cavity is provided in the first valve body, a second inlet hole and a second outlet hole connected with the second valve cavity are provided on the first valve body, the second outlet hole is connected with the exhaust hole, and the second inlet hole is connected with a part of the first valve cavity located between the sealing member and the end of the first air guide channel;

[0009] The second valve body is arranged in the second valve cavity, and the second valve cavity is provided with a second return spring connected with the second valve body and driving the second valve body to seal the second inlet hole, and the sealing air pressure of the second valve body on the second inlet hole is lower than the low pressure maintaining air pressure.

[0010] As a further improvement of the above technical solution, a second valve slot is provided at the front end of the second valve cavity, the second inlet hole is connected to the second valve slot, the cross-sectional area of ​​the end of the second valve slot is smaller than the cross-sectional area of ​​the second valve cavity, the second outlet hole is located at the rear end of the second valve slot, and an air guide gap is formed between the second valve body and the inner wall of the second valve cavity.

[0011] As a further improvement of the above technical solution, the sealing member is arranged at the end of the first valve body, and a pressure-bearing sealing surface is arranged in the first valve cavity, which is located at the periphery of the exhaust hole and is used to abut against the sealing member.

[0012] As a further improvement of the above technical solution, the switch includes an intake connecting rod pivotally connected to the main engine and a locking connecting rod pivotally connected to the main engine, the intake connecting rod opens and closes the air valve by swinging, an elastic reset device is connected to the intake connecting rod, a locking position is provided on the intake connecting rod, a locking piece movably engaged with the locking position is provided at one end of the locking connecting rod, a third reset spring is provided on the lock connecting rod, and when the intake connecting rod is in an open valve state, the third reset spring is used to drive the locking piece to swing toward the locking position, and the pressure feedback shutdown structure cooperates with the locking connecting rod to drive it to overcome the movement of the third reset spring.

[0013] As a further improvement of the above technical solution, the pressure feedback shutdown structure is a valve stem arranged at the end of the first valve body, the valve stem is inserted in the exhaust hole, the length of the valve stem is greater than the length of the exhaust hole, and when the air pressure in the water bottle reaches a specified value, the valve stem is completely pushed out of the first mounting seat by the first valve body and presses the locking rod.

[0014] As a further improvement of the above technical solution, the second outlet hole is arranged on the outer surface of the valve stem.

[0015] As a further improvement of the above technical solution, a limiting position is provided on the lock link, a driving unit is provided on the outer side of the bottle mouth of the water bottle, a push rod is provided on the first mounting seat, and an intermediate rocker arm is pivotally connected in the main engine and is located between the push rod and the limiting position. The intermediate rocker arm switches between a limiting state and a released state by swinging. In the limiting state, the end of the intermediate rocker arm is located on the moving path of the limiting position, thereby limiting the swinging of the card toward the engaging position. After the water bottle is installed on the first mounting seat, the driving unit can drive the push rod to move and drive the intermediate rocker arm to swing to the released state. A fourth spring abutting against the push rod and / or the intermediate rocker arm is provided in the main engine, and the fourth spring is used to drive the intermediate rocker arm to return to the limiting state.

[0016] As a further improvement of the above technical solution, a mounting opening is provided at the bottom of the first mounting seat, a sliding groove is provided on the inner wall of the mounting opening, the push rod includes a sliding block provided in the sliding groove and used to slide along the sliding groove, an entrance opening connected to the sliding groove is provided at the bottom of the mounting opening, and the driving unit can enter the sliding groove through the entrance opening and drive the sliding block to slide.

[0017] As a further improvement of the above technical solution, a second mounting seat and a gas cylinder shield are provided at the bottom of the main engine, the gas cylinder can be detachably mounted on the second mounting seat, a bayonet is provided at the outer periphery of the second mounting seat, a rotating slot that rotatably cooperates with the bayonet is provided on the inner side of the gas cylinder shield, a lock slot is provided on the top of the gas cylinder shield, a locking switch is provided in the main engine, the locking switch includes a driving key and a locking pin, an operating hole is provided on the bottom surface of the main engine, the driving key is located in the operating hole, the locking pin is located on the second mounting seat, and a fifth spring connected to the locking pin and used to drive the locking pin to move toward the locking slot is provided on the main engine, and when the gas cylinder shield is rotated and engaged with the second mounting seat, the locking pin is inserted into the lock slot.

[0018] The beneficial effect of the present invention is that: through the pressure feedback shutdown structure, when the pressure in the water bottle reaches the set shutdown pressure value during the preparation of the bubble water, the gas filling operation is stopped. After the bubble water is prepared, the carbon dioxide gas in the water bottle can be completely discharged directly through the active exhaust valve body, so that the user can take down the water bottle after the preparation is completed. If the user does not need to drink directly after the preparation is completed, the active exhaust valve body can be not used for active exhaust. Since the first valve cavity and the first air guide channel are set in this scheme, and the ratio of the effective air pressure bearing area of ​​the first valve body to the cross-sectional area at the end of the first air guide channel is controlled, the thrust on the first valve body is small under the condition of the same air pressure because the cross-sectional area at the end of the first air guide channel is small. Therefore, only when the air pressure in the water bottle reaches the set shutdown pressure value, the air pressure can overcome the elastic force of the first spring to push the first valve body open. However, once the first valve body is pushed open, the effective air pressure bearing area of ​​the first valve body in contact with the air pressure increases. Therefore, under the condition of the same pressure, the air pressure on the first valve body is small. When the air pressure in the water bottle is lower than the low-pressure maintaining air pressure, the thrust of the air pressure on the first valve body in the first valve cavity is less than the elastic force of the first return spring, thereby causing the first valve body to reset and close the end of the first air guide channel, so that the air pressure in the water bottle is no longer discharged. At this time, the water bottle enters a low-pressure state with a relatively low carbon dioxide gas concentration. Since a certain carbon dioxide pressure is still maintained in the water bottle at this time, the carbon dioxide in the bubble water is not easy to precipitate, thereby ensuring the concentration of the bubble water. When it needs to be drunk, the remaining residual pressure can be discharged through the active exhaust valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is one of the structural schematic diagrams of the preferred implementation mode of the present invention;

[0021] Figure 2 For Figure 1 A schematic structural diagram of a cross-sectional state in the AA direction when the first valve body is not pushed;

[0022] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at B;

[0023] Figure 4 For Figure 1 A schematic structural diagram of a cross-sectional state in the AA direction when the first valve body is pushed;

[0024] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at C;

[0025] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure in the DD direction;

[0026] Figure 7 for Figure 1 Schematic diagram of the cross-sectional structure in the EE direction;

[0027] Figure 8 This is the second structural schematic diagram of the preferred embodiment of the present invention;

[0028] Fig. 9 It is an exploded view of the present invention;

[0029] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at F;

[0030] Fig.11 An exploded view of a portion of the structure of the first mounting seat;

[0031] Fig.12 It is a schematic diagram of the structure of the top rod, the middle swing rod and the corresponding parts. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, the meaning of "several" is one or more, the meaning of "more" is more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present invention, unless otherwise clearly defined, the terms such as "set", "install", and "connect" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0035] Reference Figures 1 to 12 , a bubble water machine with a low pressure holding function, comprising:

[0036] A host 10, wherein the host 10 is provided with a gas cylinder 12, a water bottle 11, and a gas path for connecting the gas cylinder 12 and the water bottle 11, the gas path is provided with a gas valve, and the host 10 is provided with a switch for controlling the gas valve;

[0037] A first mounting seat 20, the water bottle 11 is detachably mounted on the first mounting seat 20, a first valve cavity 21 is arranged in the first mounting seat 20, the first valve cavity 21 is connected to the water bottle 11 through a first air guide channel 22, an exhaust hole 25 connected to the first valve cavity 21 is arranged on the surface of the first mounting seat 20, and a pressure feedback shutdown structure and an active exhaust valve connected to the water bottle 11 are also arranged on the first mounting seat 20;

[0038] The first valve body 23 is arranged in the first valve cavity 21, and a sealing valve head 24 is provided at the front end of the first valve body 23 for sealing the end of the first air guide channel 22. The first valve body 23 is connected to a first return spring 26 for driving the first valve body 23 to move toward the end of the first air guide channel 22. The ratio of the effective air pressure bearing area of ​​the first valve body 23 in the first valve cavity 21 to the cross-sectional area of ​​the end of the first air guide channel 22 is the pressure ratio of the shutdown air pressure and the low-pressure holding air pressure.

[0039] Through the pressure feedback shutdown structure, during the process of preparing sparkling water, when the pressure in the water bottle 11 reaches the set shutdown pressure value, the gas filling operation is stopped. After the sparkling water is prepared, the carbon dioxide gas in the water bottle 11 can be completely discharged directly through the active exhaust valve body, so that the user can remove the water bottle 11 after the preparation is completed. If the user does not need to drink directly after the preparation is completed, active exhaust can be performed without using the active exhaust valve body. In this solution, since the first valve cavity 21 and the first air guide channel 22 are provided, and the ratio of the effective air pressure bearing area of ​​the first valve body 23 to the cross-sectional area of ​​the end of the first air guide channel 22 is controlled, since the cross-sectional area of ​​the end of the first air guide channel 22 is small, the thrust on the first valve body 23 is small under the condition of the same air pressure. Therefore, only when the air pressure in the water bottle 11 reaches the set shutdown air pressure value, the air pressure can overcome the elastic force of the first spring to push the first valve body 23 open. However, once the first valve body 23 is pushed open, since the effective air pressure bearing area of ​​the first valve body 23 in contact with the air pressure increases, the air pressure has a greater impact on the first valve body 23 under the same pressure. When the pressure in the water bottle 11 is greater, the first valve body 23 will be completely pushed open in an instant. At this time, the air pressure in the water bottle 11 is discharged through the exhaust hole 25. When the air pressure in the water bottle 11 is lower than the low-pressure holding air pressure, the thrust of the air pressure on the first valve body 23 in the first valve chamber 21 is less than the elastic force of the first return spring 26. Therefore, the first valve body 23 is reset to close the end of the first air guide channel 22, so that the air pressure in the water bottle 11 is no longer discharged. At this time, the water bottle 11 enters a low-pressure state with a relatively low carbon dioxide gas concentration. Since a certain carbon dioxide pressure is still maintained in the water bottle 11 at this time, the carbon dioxide in the bubble water is not easy to precipitate, thereby ensuring the concentration of the bubble water. When it is needed to drink, the remaining residual pressure can be discharged through the active exhaust valve body.

[0040] Further optimization, preferably, a sealing member 27 cooperating with the inner wall of the first valve cavity 21 is provided on the surface of the first valve body 23, a second valve cavity 30 is provided in the first valve body 23, a second inlet hole 31 and a second outlet hole 32 communicating with the second valve cavity 30 are provided on the first valve body 23, the second outlet hole 32 is communicated with the exhaust hole 25, and the second inlet hole 31 is communicated with a portion of the first valve cavity 21 located between the sealing member 27 and the end of the first air guide channel 22;

[0041] The second valve body 34 is arranged in the second valve cavity 30, and the second valve cavity 30 is provided with a second return spring 35 connected with the second valve body 34 and driving the second valve body 34 to seal the second inlet hole 31. The sealing air pressure of the second valve body 34 to the second inlet hole 31 is lower than the low-pressure holding air pressure. The sealing air pressure of the second valve body 34 to the second inlet hole 31 is lower than the low-pressure holding air pressure, which means that when the second valve body 34 is pushed open, the air pressure value required for it to reseal the second inlet hole 31 is lower than the value of the low-pressure holding air pressure.

[0042] With this structure, when the air pressure in the water bottle 11 reaches the set shutdown air pressure value, the first valve body 23 is first pushed open to allow the gas in the water bottle 11 to enter the first valve cavity 21. Then, because the first valve body 23 is sealed with the inner wall of the first valve cavity 21, the gas can only enter the second valve cavity 30 along the second inlet hole 31, thereby pushing open the second valve body 34, and then flowing along the second outlet hole 32 to the exhaust hole 25, and finally discharged to the outside of the first mounting seat 20. The purpose of providing the second valve cavity 30 and the second valve body 34 is to slow down the automatic exhaust rate of carbon dioxide gas, thereby making the process of reducing the air pressure in the water bottle 11 more stable.

[0043] For further optimization, a second valve slot 33 is preferably provided at the front end of the second valve chamber 30, the second inlet hole 31 is connected to the second valve slot 33, the cross-sectional area of ​​the end of the second valve slot 33 is smaller than the cross-sectional area of ​​the second valve chamber 30, the second outlet hole 32 is located at the rear end of the second valve slot 33, and an air guide gap is formed between the second valve body 34 and the inner wall of the second valve chamber 30.

[0044] In this solution, the seal 27 is preferably disposed at the end of the first valve body 23, and a pressure-bearing sealing surface is disposed in the first valve cavity 21, which is located at the periphery of the exhaust hole 25 and is used to abut against the seal 27. In this way, when the first valve body 23 is pushed open, the seal 27 can better seal with the inner wall of the first valve cavity 21, thereby preventing the gas from directly flowing through the first valve cavity 21 to the exhaust hole 25. In other embodiments, the seal 27 can also be sleeved on the middle part of the periphery of the first valve body 23.

[0045] Here is an example, if the set shutdown air pressure is 0.8Mpa, and the low pressure holding air pressure is 0.2Mpa, the pressure of the first return spring 26 on the first valve body 23 is 10N, then the ratio of the cross-sectional area of ​​the end of the first air guide channel 22 to the effective area of ​​the first valve body 23 that withstands the air pressure is 1:4. Since the aperture at the end of the first air guide channel 22 is small, when the first valve body 23 closes the end of the first air guide channel 22, the contact area between the carbon dioxide gas in the water bottle 11 and the first valve body 23 is only the area of ​​the aperture at the end of the first air guide channel 22. At this time, only when the air pressure in the water bottle 11 reaches 0.8Mpa, can a force exceeding 10N be generated on the first valve body 23 to push the first valve body 23 open. However, once the first valve body 23 is When the opening is pushed open, the carbon dioxide gas in the water bottle 11 enters the first valve cavity 21. At this time, the effective contact area of ​​the carbon dioxide gas contacting the first valve body 23 and pushing the first valve body 23 to move is increased by four times. When the air pressure value remains unchanged, the thrust on the first valve body 23 is increased by four times to exceed 40N. At this time, the first valve body 23 will be completely pushed open instantly. When the first valve body 23 is completely pushed open, the carbon dioxide gas in the water bottle 11 is continuously discharged along the exhaust hole 25, and the air pressure value continues to decrease. When the air pressure value of the carbon dioxide gas in the water bottle 11 is reduced to 0.2Mpa, the effective thrust of the carbon dioxide gas on the first valve body 23 is reduced to below 10N again. Therefore, the first valve body 23 is retracted to block the end of the first air guide channel 22.

[0046] On the basis of the above solution, it is preferred that the first valve body 23 and the inner wall of the first valve cavity 21 are clearance-matched.

[0047] Further optimization, preferably, the switch includes an intake connecting rod 40 pivotally connected to the main unit 10 and a locking connecting rod 42 pivotally connected to the main unit 10, the intake connecting rod 40 opens and closes the air valve by swinging, an elastic reset device is connected to the intake connecting rod 40, a clamping position 41 is provided on the intake connecting rod 40, one end of the locking connecting rod 42 is provided with a clamping member 43 movably engaged with the clamping position 41, and a third reset spring 44 is provided on the locking connecting rod 42. When the intake connecting rod 40 is in the state of opening the air valve, the third reset spring 44 is used to drive the clamping member 43 toward The engaging position 41 swings, and the pressure feedback shutdown structure cooperates with the lock link 42 to drive it to overcome the third reset spring 44. The user presses the intake link 40 to open the air valve. At this time, the lock link 42, under the action of the third reset spring 44, makes the clamp 43 engage with the engaging position 41 on the intake link 40, so as to automatically perform continuous air intake operation. Then, when the air pressure in the water bottle 11 reaches the set shutdown air pressure, the pressure feedback shutdown structure drives the lock link 42 to swing, so that the clamp 43 is disengaged from the engaging position 41, so that the intake link 40 is reset. The pressure feedback shutdown structure can be a pressure sensor connected to the water bottle 11 and a drive motor electrically connected to the pressure sensor. When it is sensed that the pressure in the water bottle 11 reaches the set shutdown pressure value, the drive motor is controlled to press the lock link 42 to make the clamp 43 disengage from the engaging position 41.

[0048] In this solution, in order to optimize the structural setting and reduce the number of parts, the pressure feedback shutdown structure is preferably a valve stem 28 disposed at the end of the first valve body 23, the valve stem 28 is inserted into the exhaust hole 25, the length of the valve stem 28 is greater than the length of the exhaust hole 25, and when the air pressure in the water bottle 11 reaches a specified value, the valve stem 28 is completely pushed out of the first mounting seat 20 by the first valve body 23 and presses the lock link 42, so that the clamp 43 is no longer engaged with the clamping position 41. On this basis, it is preferred that the second outlet 32 ​​is disposed on the outer surface of the valve stem 28.

[0049] Further optimization is performed to prevent the locking link 42 from being engaged with the air intake link 40 when the water bottle 11 is not mounted on the first mounting seat 20, thereby preventing the air bottle 12 from being continuously opened when the water bottle 11 is not mounted, preferably, a limiting position 45 is provided on the locking link 42, a driving unit is provided on the outer side of the bottle mouth of the water bottle 11, a push rod 51 is provided on the first mounting seat 20, and an intermediate swing rod 53 is pivotally connected in the main unit 10 and is located between the push rod 51 and the limiting position 45. The intermediate swing rod 53 swings between the limiting state and the limiting state. The release state is switched. In the restricted state, the end of the intermediate rocker arm 53 is located on the moving path of the restricted position 45, thereby restricting the clamping member 43 from swinging toward the clamping position 41. After the water bottle 11 is installed on the first mounting seat 20, the driving unit can drive the top rod 51 to move and drive the intermediate rocker arm 53 to swing to the release state. A fourth spring 54 is provided in the main unit 10, which is in contact with the top rod 51 and / or the intermediate rocker arm 53. The fourth spring 54 is used to drive the intermediate rocker arm 53 to return to the restricted state. With this structure, when the water bottle 11 is not installed on the first mounting seat 20, the fourth spring 54 drives the intermediate swing rod 53 to reset to the restricted state. At this time, the end of the intermediate swing rod 53 is located on the moving path of the restricted position 45, so that the lock link 42 cannot form an effective swing. At this time, even if the air intake link 40 is pressed, the clamp 43 cannot move to the specified end under the action of the third reset spring 44, so the clamp 43 cannot engage the clamping position 41, so that the air intake link 40 is not restricted. Therefore, as soon as the user lets go, the air intake link 40 automatically resets, thereby avoiding the phenomenon of continuously opening the gas bottle 12 when the water bottle 11 is not installed. When the water bottle 11 is installed on the first mounting seat 20, the push rod 51 is driven to move, and the push rod 51 moves to drive the intermediate swing rod 53 to swing, so that the intermediate swing rod 53 swings to the release state so that the end of the intermediate swing rod 53 is moved out of the moving path of the restricted position 45, and the lock link 42 can swing normally. In this solution, the middle portion of the locking link 42 is preferably pivotally connected to the host 10 , the clamp 43 is disposed at the top of the locking link 42 , and the limiting position 45 is disposed at the bottom of the locking link 42 .

[0050] In this solution, the clamping member 43 is preferably a clamping hook, and the clamping position 41 is a clamping hole provided on the air intake pressure rod. The edge of the clamping hook is provided with a guiding inclined surface that matches the surface of the air intake pressure rod. The clamping hole is located above the clamping hook. The air intake pressure rod swings up and down. When pressed down, the clamping hole moves downward, and the edge of the air intake pressure rod pushes the clamping hook, so that the clamping hook is clamped into the clamping hole. In other embodiments, the clamping member 43 and the clamping position 41 can also be two hook bodies that are connected to each other, etc.

[0051] For further optimization, it is preferred that a mounting opening 201 is provided at the bottom of the first mounting seat 20, a sliding groove 50 is provided on the inner wall of the mounting opening 201, the push rod 51 includes a slider 52 arranged in the sliding groove 50 and used to slide along the sliding groove 50, and an entrance opening 202 connected to the sliding groove 50 is provided at the bottom of the mounting opening 201, the driving unit can enter the sliding groove 50 through the entrance opening 202 and drive the slider 52 to slide, when the water bottle 11 is installed on the first mounting seat 20, the driving unit enters the sliding groove 50 through the entrance opening 202, and then rotates the water bottle 11, so that the driving unit rotates in the sliding groove 50, thereby pushing the slider 52 to move in the sliding groove 50, thereby driving the push rod 51 to move.

[0052] For further optimization, it is preferred that a second mounting seat and a gas cylinder shield 60 are provided at the bottom of the main engine 10, the gas cylinder 12 is detachably mounted on the second mounting seat, a bayonet 63 is provided on the outer periphery of the second mounting seat, a rotating slot 61 rotatably matched with the bayonet 63 is provided on the inner side of the gas cylinder shield 60, a lock slot 62 is provided on the top of the gas cylinder shield 60, a locking switch 70 is provided in the main engine 10, the locking switch 70 includes a driving key 72 and a locking pin 71, an operating hole is provided on the bottom surface of the main engine 10, the driving key 72 is located in the operating hole, the locking pin 71 is located on the second mounting seat, and a fifth spring 73 connected to the locking pin 71 and used to drive the locking pin 71 to move toward the locking slot 62 is provided on the main engine 10, and when the gas cylinder shield 60 is rotated and engaged on the second mounting seat, the locking pin 71 is inserted into the locking slot 62. Through this structure, a gas cylinder shield 60 is arranged on the outer periphery of the gas cylinder 12, and the gas cylinder shield 60 is rotatably connected to the second mounting seat through a rotating card slot 61 and a card pin 63. When the gas cylinder shield 60 is installed in place, the locking pin 71 is automatically locked into the locking slot 62 at the top of the gas cylinder shield 60 under the action of the fifth spring 73, thereby limiting the rotation of the gas cylinder shield 60. When the gas cylinder shield 60 needs to be removed, the driving key 72 is pressed first to disengage the locking pin 71 from the locking slot 62, and then the gas cylinder shield 60 can be rotated and removed.

[0053] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A bubble water machine with low pressure maintenance function, characterized in that: include: A host (10), wherein the host (10) is provided with a gas cylinder (12), a water bottle (11), and a gas path for connecting the gas cylinder (12) and the water bottle (11), the gas path is provided with a gas valve, and the host (10) is provided with a switch for controlling the gas valve; A first mounting seat (20), the water bottle (11) being detachably mounted on the first mounting seat (20), a first valve cavity (21) being arranged in the first mounting seat (20), the first valve cavity (21) being connected to the water bottle (11) via a first air guide channel (22), an exhaust hole (25) being connected to the first valve cavity (21) being arranged on the surface of the first mounting seat (20), and a pressure feedback shutdown structure and an active exhaust valve being connected to the water bottle (11) being also arranged on the first mounting seat (20); A first valve body (23), the first valve body (23) is arranged in the first valve cavity (21), a sealing valve head (24) is provided at the front end of the first valve body (23) for sealing the end of the first air guide channel (22), the first valve body (23) is connected to a first return spring (26) for driving the first valve body (23) to move toward the end of the first air guide channel (22), and the ratio of the effective air pressure bearing area of ​​the first valve body (23) in the first valve cavity (21) to the cross-sectional area of ​​the end of the first air guide channel (22) is the pressure ratio of the shutdown air pressure and the low-pressure holding air pressure.

2. The bubble water machine with low pressure maintaining function as claimed in claim 1, characterized in that: The surface of the first valve body (23) is provided with a sealing member (27) which cooperates with the inner wall of the first valve cavity (21); a second valve cavity (30) is provided in the first valve body (23); a second inlet hole (31) and a second outlet hole (32) which are connected to the second valve cavity (30) are provided on the first valve body (23); the second outlet hole (32) is connected to the exhaust hole (25); the second inlet hole (31) is connected to a portion of the first valve cavity (21) located between the sealing member (27) and the end of the first air guide channel (22); A second valve body (34), the second valve body (34) is arranged in the second valve cavity (30), the second valve cavity (30) is provided with a second return spring (35) connected to the second valve body (34) and driving the second valve body (34) to seal the second inlet hole (31), the sealing air pressure of the second valve body (34) on the second inlet hole (31) is lower than the low pressure holding air pressure.

3. The bubble water machine with low pressure maintaining function as claimed in claim 2, characterized in that: A second valve groove (33) is provided at the front end of the second valve cavity (30); the second inlet hole (31) is connected to the second valve groove (33); the cross-sectional area of ​​the end of the second valve groove (33) is smaller than the cross-sectional area of ​​the second valve cavity (30); the second outlet hole (32) is located at the rear end of the second valve groove (33); and an air guide gap is formed between the second valve body (34) and the inner wall of the second valve cavity (30).

4. The bubble water machine with low pressure maintaining function as claimed in claim 2, characterized in that: The sealing member (27) is arranged at the end of the first valve body (23), and a pressure-bearing sealing surface is arranged in the first valve cavity (21) and is located at the outer periphery of the exhaust hole (25) and is used to abut against the sealing member (27).

5. A bubble water machine with low pressure maintaining function as claimed in claim 2 or 3, characterized in that: The switch comprises an air intake connecting rod (40) pivotally connected to the main unit (10) and a locking connecting rod (42) pivotally connected to the main unit (10); the air intake connecting rod (40) opens and closes the air valve by swinging; an elastic reset device is connected to the air intake connecting rod (40); a clamping position (41) is provided on the air intake connecting rod (40); one end of the locking connecting rod (42) is provided with a clamping member (43) movably engaged with the clamping position (41); a third reset spring (44) is provided on the locking connecting rod (42); when the air intake connecting rod (40) is in an air valve opening state, the third reset spring (44) is used to drive the clamping member (43) to swing toward the clamping position (41); the pressure feedback shutdown structure cooperates with the locking connecting rod (42) to drive it to overcome the movement of the third reset spring (44).

6. The bubble water machine with low pressure maintaining function as claimed in claim 5, characterized in that: The pressure feedback shutdown structure is a valve stem (28) arranged at the end of the first valve body (23), the valve stem (28) is inserted into the exhaust hole (25), the length of the valve stem (28) is greater than the length of the exhaust hole (25), and when the air pressure in the water bottle (11) reaches a specified value, the valve stem (28) is completely pushed out of the first mounting seat (20) by the first valve body (23) and presses the locking link (42).

7. The bubble water machine with low pressure maintaining function as claimed in claim 6, characterized in that: The second outlet hole (32) is arranged on the outer surface of the valve stem (28).

8. The bubble water machine with low pressure maintaining function as claimed in claim 5, characterized in that: The locking link (42) is provided with a limiting position (45), the outer side of the bottle mouth of the water bottle (11) is provided with a driving unit, the first mounting seat (20) is provided with a push rod (51), and the main body (10) is pivotally connected with an intermediate swing rod (53) located between the push rod (51) and the limiting position (45), the intermediate swing rod (53) is switched between a limiting state and a releasing state by swinging, and in the limiting state, the end of the intermediate swing rod (53) is located at the limiting position (45). The moving path further limits the swinging of the clamping member (43) toward the clamping position (41); after the water bottle (11) is mounted on the first mounting seat (20), the driving unit can drive the push rod (51) to move and drive the intermediate swing rod (53) to swing to a released state; a fourth spring (54) is provided in the main unit (10) and is in contact with the push rod (51) and / or the intermediate swing rod (53); the fourth spring (54) is used to drive the intermediate swing rod (53) to return to a restricted state.

9. The bubble water machine with low pressure maintaining function as claimed in claim 8, characterized in that: The first mounting seat (20) is provided with a mounting opening (201) at the bottom, a sliding groove (50) is provided on the inner wall of the mounting opening (201), the push rod (51) comprises a sliding block (52) which is arranged in the sliding groove (50) and is used to slide along the sliding groove (50), and an entrance opening (202) which is connected to the sliding groove (50) is provided at the bottom of the mounting opening (201), and the driving unit can enter the sliding groove (50) through the entrance opening (202) and drive the sliding block (52) to slide.

10. The bubble water machine with low pressure maintaining function as claimed in claim 1, characterized in that: A second mounting seat and a gas cylinder shield (60) are provided at the bottom of the main unit (10); the gas cylinder (12) is detachably mounted on the second mounting seat; a bayonet (63) is provided on the outer periphery of the second mounting seat; a rotating bayonet groove (61) rotatably matched with the bayonet groove (63) is provided on the inner side of the gas cylinder shield (60); a locking groove (62) is provided on the top of the gas cylinder shield (60); a locking switch (70) is provided in the main unit (10); the locking switch (70) comprises A driving key (72) and a locking pin (71), the bottom surface of the main unit (10) is provided with an operating hole, the driving key (72) is located in the operating hole, the locking pin (71) is located on the second mounting seat, the main unit (10) is provided with a fifth spring (73) connected to the locking pin (71) and used to drive the locking pin (71) to move toward the locking groove (62), and when the gas cylinder shield (60) is rotated and engaged with the second mounting seat, the locking pin (71) is inserted into the locking groove (62).

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