Carbon dioxide bubble water machine with air pressure monitoring

Abstract

The application provides a carbon dioxide bubble water machine with air pressure monitoring, which comprises a gas cylinder, a bubble water machine body, a gas cylinder valve seat, a gas pipe assembly, a pressure relief valve assembly, a pressure relief head and a pressure relief pipe, the gas cylinder is arranged in the main body and is communicated with the inlet end of the gas pipe assembly through the gas cylinder valve seat, the outlet end of the gas pipe assembly is communicated with the pressure relief pipe through the pressure relief valve assembly, an air pressure monitoring assembly is communicated with the pressure relief pipe and comprises a follow-up guide rod which can move along with the change of air pressure, a plurality of contact groups which are arranged on the moving path of the follow-up guide rod and can be in contact with the follow-up guide rod, and a control module which can form a loop with each contact group in the conductive state of the follow-up guide rod, and the output end of the control module is used for controlling the on-off of the pressure relief valve assembly. When the air pressure reaches the corresponding value, the user is given feedback, and when the air pressure exceeds the preset value, the pressure relief valve assembly is automatically cut off, so that the high pressure in the pressure bottle caused by overpressure is avoided, and the safety risk is sufficiently reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bubble water machines, in particular to a carbon dioxide bubble water machine with gas pressure monitoring. BACKGROUND

[0002] A bubble water machine is a machine that can produce bubble water. During operation, food-grade carbon dioxide gas can be filled into pure water to form soda water containing bubbles.

[0003] In the prior art, for example, a carbon dioxide carbonated water and soda water manufacturing machine disclosed in Chinese Patent No. CN209047915U includes a gas cylinder and a soda water machine mechanism. The soda water machine mechanism includes a gas cylinder valve fixing seat, a gas cylinder gasket, an air inlet valve assembly, a gas rod positioning pin, a gas rod return spring, a gas rod, a fixing seat, a gas rod fixing pin, a pressure relief fixing seat, a gas rod, a gas rod return spring, a pressure relief valve group, an exhaust nozzle, and a gas pipe assembly. The gas rod positioning pin, the gas rod return spring, the fixing seat, the gas rod fixing pin, the pressure relief fixing seat, and the gas rod return spring can be used in combination to prevent the soda water machine mechanism from loosening or shifting during carrying or handling, and the soda water containing bubbles can be made at any time and anywhere.

[0004] When using a carbon dioxide gas cylinder for gas filling, the pressure of the gas cylinder can reach 3.5-15 MPa. The above-mentioned bubble water machine and other types of bubble water machines all lack corresponding gas pressure monitoring components. The pressure of the pressurized bottle receiving carbon dioxide is only relied on the user's own feeling and experience, so there is considerable safety risk in the use process.

[0005] Therefore, the present application has been specially designed to provide a carbon dioxide bubble water machine with gas pressure monitoring. SUMMARY

[0006] In order to solve the safety risk problem of the above-mentioned bubble water machine in the use process, the technical scheme of the present application is as follows:

[0007] A carbon dioxide bubble water machine with gas pressure monitoring for filling gas into a pressurized bottle, comprising:

[0008] A gas cylinder for storing food-grade carbon dioxide gas;

[0009] A bubble water machine body including a main body, a gas cylinder valve seat, a gas pipe assembly, a pressure relief valve assembly, a pressure relief head, and a pressure relief pipe. The gas cylinder is arranged in the main body and communicates with the inlet end of the gas pipe assembly through the gas cylinder valve seat. The outlet end of the gas pipe assembly communicates with the pressure relief pipe through the pressure relief valve assembly.

[0010] The pressure monitoring assembly is in communication with the pressure release pipe and comprises a follower guide rod that can move in response to changes in air pressure, a plurality of contact groups arranged along the moving path of the follower guide rod and capable of being in contact with the follower guide rod, and a control module capable of forming a loop with each contact group when the follower guide rod is in contact. The output end of the control module is used to control the on-off of the pressure relief valve assembly.

[0011] Preferably, the inside of the pressure release head forms a cavity, the air pipe assembly is arranged in the cavity, a connecting section is arranged in the cavity, a fixed plate is arranged at the lower end of the cavity and on the side close to the opening of the pressure release head to separate the upper end of the cavity into a sealed pressure measuring area, the middle part of the fixed plate extends upward to form a guide section in communication with the connecting section, the pressure release pipe penetrates the guide section and extends to the connecting section to communicate with the connecting section, a pressure measuring follower is arranged in the pressure measuring area and slides on the outer wall of the guide section, the edge of the pressure measuring follower is sealingly connected with the inner wall of the pressure measuring area to separate the upper end of the pressure measuring follower into a relatively sealed pressure measuring cavity, a return spring is arranged between the bottom of the pressure measuring follower and the fixed plate to push the pressure measuring follower upward, a plurality of pressure equalizing holes are arranged on the side wall of the connecting section to communicate with the pressure measuring cavity, a limiting structure is arranged in the pressure measuring cavity to limit the maximum sliding distance of the pressure measuring follower, the contact groups are symmetrically arranged on the side wall of the pressure measuring cavity, and a plurality of the contact groups are distributed along the sliding direction of the pressure measuring follower, the follower guide rod is symmetrically arranged on both sides of the upper end of the pressure measuring follower and used to contact the contact groups at the same height on both sides to realize conduction, and a wire part is arranged on the pressure measuring follower and used to electrically connect the two follower guide rods.

[0012] Preferably, the lower end of the pressure measuring follower extends downward to form a limiting sleeve, and the limiting sleeve is recessed inward to form a limiting slot for limiting the return spring.

[0013] Preferably, an adjusting plate is slidingly arranged on the upper end of the fixed plate and on the side of the outer periphery of the guide section, the return spring is sleeved on the outer wall of the guide section, and the upper and lower ends of the return spring respectively abut against the bottom of the pressure measuring follower and the top of the adjusting plate, and the side of the fixed plate away from the adjusting plate is provided with an adjusting mechanism for adjusting the distance between the adjusting plate and the fixed plate.

[0014] Preferably, a plurality of adjusting screw holes are uniformly arranged on the fixed plate and penetrate to the bottom of the pressure measuring area around the middle opening position of the fixed plate, an adjusting screw is threadedly connected in the adjusting screw hole, and the bottom of the shank of the adjusting screw abuts against the lower end surface of the adjusting plate.

[0015] Preferably, a connecting head is arranged at the bottom of the cavity of the pressure release head, a connecting thread is arranged in the bottom of the connecting head and used to threadedly connect with the bottle opening of the pressure bottle, the pressure release pipe penetrates through the middle part of the connecting head and is fixed on the connecting head, and the upper end of the connecting head and the lower end of the fixed plate are detachably connected through a magnetic structure.

[0016] Preferably, the middle part of the fixed plate is provided with a guide hole for the pressure release pipe to pass through and communicate with the inside of the guide section, and the guide hole is provided with a first guide inclined surface with a gradually reduced opening from the bottom to the top.

[0017] Preferably, the guide section is inwardly reduced in diameter to form a limiting section near the upper end, the connecting position of the guide section and the limiting section is provided with a second guide inclined surface, the upper end of the pressure release pipe is reduced in diameter to form a limiting part in interference fit with the limiting section, and the pressure release pipe and the limiting part are provided with a third guide inclined surface matched with the second guide inclined surface.

[0018] Preferably, the guide section is outwardly protruded to form a plurality of limiting protrusions near the upper end, the top of the pressure measuring follower is downwardly recessed to form a guide limiting groove with a cross section matched with the limiting protrusions, and the highest position of the pressure measuring follower does not exceed the pressure equalizing hole when the limiting protrusions abut against the bottom surface of the guide limiting groove.

[0019] Preferably, the air pressure monitoring assembly further comprises an air pressure indicator lamp arranged on the loop formed by each contact group and the control module.

[0020] The beneficial effects of the present application are as follows:

[0021] The air pressure monitoring assembly is used to monitor the gas pressure of the pressure release pipe, and the loop formed by the follow-up guide rod and the contact group is used to judge the corresponding air pressure, and the corresponding air pressure value of each contact group is preset, the user is fed back when the air pressure reaches the corresponding value, and the control module inputs a cut-off signal to the pressure relief valve assembly when the air pressure exceeds the preset value, so as to automatically cut off the pressure relief valve assembly, thereby avoiding the formation of high pressure in the pressure bottle caused by overpressure, and sufficiently reducing the safety risk. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0023] Among them:

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0025] Figure 2 is a schematic diagram of the partial cross-sectional structure of the present application;

[0026] Figure 3 is a schematic diagram of the cross-sectional structure highlighting the inside of the pressure release head of the present application;

[0027] Figure 4 is a schematic diagram of the three-dimensional cross-sectional structure highlighting the pressure release head of the present application;

[0028] Figure 5is the connection principle block diagram of the application;

[0029] Figure 6 is the connection principle block diagram of the application highlighting the air pressure monitoring assembly.

[0030] Label explanation:

[0031] 10, bubble water machine body; 11, gas cylinder; 20, main body; 21, pull rod; 30, gas cylinder valve seat; 40, gas pipe assembly; 41, connecting section; 411, equalizing hole; 50, pressure relief valve assembly; 60, pressure relief head; 61, cavity; 62, fixed plate; 621, adjusting screw hole; 622, adjusting bolt; 63, pressure measuring area; 64, guide section; 641, limiting section; 642, second guide slope; 65, pressure measuring follower; 651, sealing ring; 652, wire part; 653, protruding part; 654, limiting sleeve; 655, limiting clamping groove; 66, pressure measuring cavity; 67, return spring; 671, adjusting plate; 68, limiting structure; 681, limiting protrusion; 682, guide limiting groove; 69, connecting head; 691, connecting thread; 692, magnetic structure; 693, guide hole; 70, pressure relief pipe; 71, limiting part; 72, third guide slope; 80, air pressure monitoring assembly; 81, follower guide rod; 82, contact group; 83, control module; 84, indicator light; 90, pressure bottle. DETAILED DESCRIPTION

[0032] In order to make the technical problems to be solved by the application, technical solutions and beneficial effects more clear and explicit, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the application, and are not used to limit the application.

[0033] Please refer to Figures 1 to 6 , a carbon dioxide bubble water machine with air pressure monitoring as the best embodiment of the application, for filling air into the pressure bottle 90, comprising:

[0034] The gas cylinder 11 is used for storing food-grade carbon dioxide gas;

[0035] The bubble water machine body 10 includes the main body 20, the gas cylinder valve seat 30, the gas pipe assembly 40, the pressure relief valve assembly 50, the pressure relief head 60, and the pressure relief pipe 70. The gas cylinder 11 is arranged in the main body 20 and is in communication with the inlet end of the gas pipe assembly 40 through the gas cylinder valve seat 30. The outlet end of the gas pipe assembly 40 is in communication with the pressure relief pipe 70 through the pressure relief valve assembly 50.

[0036] The air pressure monitoring assembly 80, in communication with the pressure relief pipe 70, comprises a follower guide rod 81 which can move in orientation following air pressure change, a plurality of contact groups 82 arranged on the moving path of the follower guide rod 81 and capable of being in contact with the follower guide rod 81, and a control module 83 capable of forming a loop with each contact group 82 when the follower guide rod 81 is in the conducting state. The output end of the control module 83 is used to control the on-off of the pressure relief valve assembly 50.

[0037] Preferably, as shown in Figure 2 、 3 , the inside of the pressure relief head 60 is concave upward to form a cavity 61 for accommodating components. The air pipe assembly 40 extends downward from the upper part of the cavity 61 into the cavity 61 and forms a connecting section 41 in the cavity 61. A fixed plate 62 is arranged at the lower end of the cavity 61 and on the side close to the lower opening of the pressure relief head 60 to separate the space at the upper end of the fixed plate 62 into a sealed pressure measuring area 63. The middle part of the fixed plate 62 extends upward to form a guide section 64 in communication with the connecting section 41. The pressure relief pipe 70 penetrates the guide section 64 and extends to the position of the connecting section 41 to communicate with the connecting section 41. A pressure measuring follower 65 is arranged in the pressure measuring area 63 and slides on the outer wall of the guide section 64. The pressure measuring follower 65 moves up and down along the outer wall of the guide section 64 in the pressure measuring area 63. The edge of the pressure measuring follower 65 is in sealing connection with the inner wall of the pressure measuring area 63 to separate the upper end part of the pressure measuring follower 65 into a relatively sealed pressure measuring cavity 66. Specifically, two sealing rings 651 are arranged around the edge of the pressure measuring follower 65 on the circumferential side. The edge of the sealing ring 651 abuts against the side wall of the pressure measuring area 63. A return spring 67 is arranged between the bottom of the pressure measuring follower 65 and the fixed plate 62 to lift the pressure measuring follower 65 upward. A plurality of pressure equalizing holes 411 are arranged on the side wall of the connecting section 41 to communicate with the pressure measuring cavity 66. A limiting structure 68 is arranged in the pressure measuring cavity 66 to limit the highest sliding distance of the pressure measuring follower 65 sliding upward along the guide section 64. The contact group 82 is two contacts symmetrically arranged on the side wall of the pressure measuring cavity 66. A plurality of contact groups 82 are distributed at equal intervals along the sliding direction of the pressure measuring follower 65 (i.e. the vertical direction of the side wall of the pressure measuring cavity 66). The follower guide rod 81 is symmetrically arranged on both sides of the upper end of the pressure measuring follower 65 and is used to contact the contacts at the same height on both sides to realize conduction. A wire part 652 is arranged on the pressure measuring follower 65 to electrically connect the two follower guide rods 81.

[0038] Specifically, as shown in Figure 4As shown, the upper end of the pressure measuring follower 65 extends upward to form a columnar protrusion 653, and the wire part 652 is a metal wire and is annular or semi-annular around the upper end surface of the protrusion 653 to connect the two side follower guide rods 81, which are also conductive metal pieces, welded and fixed on both sides of the axis of the metal wire and on the same axis. In the initial state, the pressure measuring follower 65 is limited by the stop of the limiting structure 68, and at this time, the follower guide rod 81 is in a state of being in conductive communication with the two uppermost contacts or being higher than the two uppermost contacts, so that when the pressure bottle 90 is inflated, the air pressure in the pressure measuring cavity 66 is kept synchronous with the pressure relief pipe 70 and the pressure bottle 90 through the pressure equalizing hole 411, and when the air pressure in the pressure bottle 90 rises, the air pressure in the pressure measuring cavity 66 rises synchronously, and the pressure measuring follower 65 is pressed to move downward along the guide section 64, and the return spring 67 is compressed, and the follower guide rod 81 successively conducts different contact groups 82 in the process of moving downward, so that the control module 83 receives the data corresponding to the air pressure and displays the data to the user through different indicator lights 84 to prompt the user to the size of the current air pressure in the bottle to avoid over-inflation leading to explosion.

[0039] In order to realize the above-mentioned air pressure state display, in this embodiment, an indicator light 84 is connected in series on the circuit formed by each contact group 82 and the control module 83, the control module 83 is preferably an MCU microprocessor or an STM32 circuit board, and the above-mentioned plurality of indicator lights 84 can be provided on the outer end surface of the bubble water machine body 10, and the corresponding air pressure values or high and low pressure states are marked beside the indicator lights 84 (not shown in the figure), so that the user can quickly obtain the current air pressure value in the bottle from the change of the indicator light 84, and it is convenient for the user to judge whether to continue to inflate; if the air pressure rises too fast, the control module 83 sends a control signal to the pressure relief valve assembly 50 to close it after receiving the signal of the circuit conductive corresponding to the high air pressure, in order to cooperate with the above-mentioned process, the pressure relief valve assembly 50 can be composed of a solenoid valve and a mechanical brake valve in series, the solenoid valve is controlled by the control module 83 and is in a normally open state, and the mechanical brake valve is in a normally closed state, and is controlled by the pull rod 21 provided on the bubble water machine body 10.

[0040] In order to realize the control module 83 to identify the difference of the circuit formed by different contact groups 82, different metal contacts with different resistivities or different indicator lights 84 with different resistances can be used, and the rest of the circuit components remain the same, so that the control module 83 can identify and distinguish different circuits, and cooperate to realize the above-mentioned function.

[0041] Preferably, as Figure 2 , 3As shown in Figure 4, the lower end of the pressure follower 65 extends downward to form a limit sleeve 654, and the limit sleeve 654 is recessed inward to form a limit groove 655 that cooperates with the return spring 67. An adjustment plate 671 is provided on the upper end of the fixed plate 62 and on the outer peripheral side of the guide section 64. The return spring 67 is sleeved on the outer wall of the guide section 64 and its upper and lower ends respectively abut against the bottom of the pressure follower 65 and the top of the adjustment plate 671. An adjustment mechanism for adjusting the distance between the adjustment plate 671 and the fixed plate 62 is provided on the side of the fixed plate 62 away from the adjustment plate 671. Therefore, the limit groove 655 and the limit sleeve 654 limit the return spring 67, so that its upper end stably abuts against the pressure follower The pressure follower 65 is stably supported on the pressure measuring part 65, and its lower end abuts against the movable adjustment plate 671. Limited by the limitation of the limiting structure 68, the position of the adjustment plate 671 is adjusted upward to achieve the stroke compression of the return spring 67, so that a larger air pressure is required to press down the pressure measuring follower 65 to make it slide downward. Therefore, the user can adjust the upper limit of the air pressure monitoring according to actual needs. If the high pressure required by the user exceeds the trigger range of the contact group 82 corresponding to the original highest air pressure, the adjustment plate 671 can be adjusted upward to increase the trigger air pressure corresponding to the contact group 82. The user can obtain the bottle pressure of the pressure bottle 90 within the adjusted air pressure range without causing the pressure relief valve assembly 50 to be closed.

[0042] Preferably, Figure 4 As shown, the fixing plate 62 is evenly provided with a number of adjusting screw holes 621 extending through the bottom of the pressure measuring area 63 around its middle opening position. The adjusting screw holes 621 are internally threadedly connected to adjusting bolts 622. The bottom of the bolt body of the adjusting bolt 622 abuts against the lower end surface of the adjusting plate 671. In this embodiment, the bolt body length of the adjusting bolt 622 protrudes from the fixing plate 62, and multiple adjusting bolts 622 are evenly distributed and jointly push up the adjusting plate 671, thereby achieving stable support for the adjusting plate 671.

[0043] Preferably, Figure 3 、 4 As shown, the pressure relief head 60 is provided with a connector 69 at the bottom of the cavity 61, and a connecting thread 691 is provided at the bottom of the connector 69 to be threadedly connected to the bottle mouth of the pressure bottle 90. The pressure relief tube 70 passes through the middle of the connector 69 and is fixed on the connector 69. The upper end of the connector 69 and the lower end of the fixed plate 62 are detachably connected through a magnetic structure 692. In this embodiment, the magnetic structure 692 is an annular magnet respectively provided at the upper end of the connector 69 and the lower end of the fixed plate 62, so that the part used to install the pressure bottle 90 can be detachably separated from the pressure relief head 60. Firstly, it is convenient to pre-fix the pressure bottle 90 and then conveniently install it on the pressure relief head 60 through the magnetic structure 692. Secondly, it reserves operating space for the corresponding adjustment of the fixed plate 62 and the adjustment plate 671.

[0044] Preferably, Figure 4As shown, the middle of the fixed plate 62 is provided with a guide hole 693 for the pressure relief pipe 70 to pass through and communicate with the inside of the guide section 64, and the guide hole 693 is provided with a first guide inclined surface with an opening gradually reducing from the bottom to the top, so as to guide the pressure relief pipe 70 into the guide section 64 and smoothly insert and connect with the connecting section 41.

[0045] Preferably, as shown in the drawings, Figure 4 As shown, the guide section 64 is inwardly reduced in diameter to form a limiting section 641 near the upper end, and the connecting position of the guide section 64 and the limiting section 641 is provided with a second guide inclined surface 642, and the upper end of the pressure relief pipe 70 is reduced in diameter to form a limiting part 71 in interference fit with the limiting section 641, and a third guide inclined surface 72 is arranged between the pressure relief pipe 70 and the limiting part 71 and matched with the second guide inclined surface 642, so as to limit the highest position of the insertion of the pressure relief pipe 70, and facilitate the stable, convenient and fast insertion and installation of the pressure relief pipe 70.

[0046] Preferably, the guide section 64 is outwardly protruded to form a plurality of limiting protrusions 681 near the upper end, and the top of the pressure measuring follower 65 is downwardly recessed to form a guide limiting groove 682 with a cross section matched with the limiting protrusions 681, and the guide limiting groove 682 and the limiting protrusions 681 constitute the limiting structure 68, when the limiting protrusions 681 abut against the bottom surface of the guide limiting groove 682, the highest position of the pressure measuring follower 65 does not exceed the equalizing hole 411, so that the limiting protrusions 681 can limit the vertical sliding of the pressure measuring follower 65 and the circumferential rotation of the pressure measuring follower 65, so that the upper end of the follower guide rod 81 and each contact group 82 are always on the same moving path, and the stable triggering of the contact group 82 is ensured.

[0047] Preferably, the air pressure monitoring assembly 80 further comprises an indicating lamp 84 arranged on the loop formed by each contact group 82 and the control module 83, and the principle of the indicating lamp 84 is as described above.

[0048] The beneficial effects of the present application are as follows:

[0049] The present application monitors the gas pressure of the pressure relief pipe 70 through the air pressure monitoring assembly 80, and judges the corresponding air pressure through the loop formed by the follower guide rod 81 and the contact group 82, and pre-sets the corresponding air pressure value of each contact group 82, and gives feedback to the user when the air pressure reaches the corresponding value, and automatically cuts off the pressure relief valve assembly 50 through the control module 83 to input a cut-off signal when the air pressure exceeds the pre-set value, so as to avoid the high pressure in the pressure bottle 90 caused by overpressure, and sufficiently reduce the safety risk.

[0050] The application is described above in conjunction with the drawings, and it is obvious that the specific implementation of the application is not limited by the above manner, as long as various non-essential improvements are made by using the method concept and technical solution of the application, or the concept and technical solution of the application is directly applied to other occasions without improvement, which are all within the protection scope of the application.

Claims

1. A carbon dioxide bubble water machine with air pressure monitoring, used for inflating a pressurized bottle (90), comprising: Gas cylinder (11), storing food grade carbon dioxide gas; The main body (10) of the bubble water machine comprises a main body (20), a gas cylinder valve seat (30), an air pipe assembly (40), a pressure relief valve assembly (50), a pressure relief head (60), and a pressure relief pipe (70); the gas cylinder (11) is arranged in the main body (20) and is connected to the inlet end of the air pipe assembly (40) through the gas cylinder valve seat (30); the outlet end of the air pipe assembly (40) is connected to the pressure relief pipe (70) through the pressure relief valve assembly (50); It is characterized by further comprising: An air pressure monitoring assembly (80) is connected to the pressure relief pipe (70), and includes a follower guide rod (81) that can move directionally following changes in air pressure, a plurality of contact groups (82) arranged on the moving path of the follower guide rod (81) and capable of contacting and conducting with the follower guide rod (81), and a control module (83) that can form a circuit with each contact group (82) when the follower guide rod (81) is in a conducting state, wherein the output end of the control module (83) is used to control the on / off of the pressure relief valve assembly (50); A cavity (61) is formed inside the pressure relief head (60), and a connecting section (41) is provided in the cavity (61) of the air pipe assembly (40). A fixing plate (62) is provided at the lower end of the cavity (61) and on a side close to the opening of the pressure relief head (60) to separate the upper end of the cavity (61) into a sealed pressure measuring area (63). The middle part of the fixing plate (62) extends upward to form a guide section (64) that is connected to the connecting section (41). The pressure relief pipe (70) penetrates the guide section (64) and extends to the position of the connecting section (41) to communicate with the connecting section (41). A pressure measuring follower (65) is provided in the pressure measuring area (63) and on the outer wall of the guide section (64). The edge of the pressure measuring follower (65) is sealed and connected to the inner wall of the pressure measuring area (63) to separate the upper end of the pressure measuring follower (65) into a relatively sealed area. A pressure measuring chamber (66) is provided, and a reset spring (67) is provided between the bottom of the pressure measuring follower (65) and the fixed plate (62) for pushing up the pressure measuring follower (65). The side wall of the connecting section (41) is provided with a plurality of pressure equalizing holes (411) connected to the pressure measuring chamber (66). A limiting structure (68) is provided in the pressure measuring chamber (66) for limiting the maximum sliding distance of the pressure measuring follower (65). The contact group (82) is a contact symmetrically arranged on the side wall of the pressure measuring chamber (66), and the plurality of contact groups (82) are distributed along the sliding direction of the pressure measuring follower (65). The follower guide rod (81) is symmetrically arranged on both sides of the upper end of the pressure measuring follower (65) and is used to contact with contacts at the same height on both sides to achieve conduction. The pressure measuring follower (65) is provided with a wire portion (652) for electrically connecting the two follower guide rods (81).

2. The carbon dioxide bubble water machine with air pressure monitoring according to claim 1, characterized in that: The lower end of the pressure measuring follower (65) extends downward to form a limiting sleeve (654), and the limiting sleeve (654) is recessed inward to form a limiting slot (655) that cooperates with the return spring (67) in limiting manner.

3. The carbon dioxide bubble water machine with air pressure monitoring according to claim 1, characterized in that: An adjusting plate (671) is provided at the upper end of the fixed plate (62) and is slidably sleeved on the outer peripheral side of the guide section (64). The return spring (67) is sleeved on the outer wall of the guide section (64) and its upper and lower ends respectively abut against the bottom of the pressure follower (65) and the top of the adjusting plate (671). An adjusting mechanism for adjusting the distance between the adjusting plate (671) and the fixed plate (62) is provided on the side of the fixed plate (62) away from the adjusting plate (671).

4. The carbon dioxide bubble water machine with air pressure monitoring according to claim 3, characterized in that: The fixing plate (62) is evenly provided with a plurality of adjusting screw holes (621) extending through the bottom of the pressure measuring area (63) around its middle opening. The adjusting screw holes (621) are internally threadedly connected to adjusting bolts (622). The bottom of the bolt body of the adjusting bolt (622) abuts against the lower end surface of the adjusting plate (671).

5. The carbon dioxide sparkling water machine with air pressure monitoring according to claim 1, characterized in that: The pressure relief head (60) is provided with a connector (69) at the bottom of the cavity (61), and a connecting thread (691) is provided at the bottom of the connector (69) for connecting with the bottle mouth thread of the pressure bottle (90). The pressure relief tube (70) passes through the middle of the connector (69) and is fixed to the connector (69). The upper end of the connector (69) and the lower end of the fixing plate (62) are detachably connected via a magnetic structure (692).

6. The carbon dioxide sparkling water machine with air pressure monitoring according to claim 1, characterized in that: A guide hole (693) is provided in the middle of the fixing plate (62) for the pressure relief tube (70) to pass through and communicate with the interior of the guide section (64). The guide hole (693) is provided with a first guide slope with a gradually narrowing opening from the bottom toward the top.

7. The carbon dioxide sparkling water machine with air pressure monitoring according to claim 1, characterized in that: The guide section (64) is tapered inward near the upper end to form a limiting section (641); a second guide slope (642) is provided at the connection position between the guide section (64) and the limiting section (641); the upper end of the pressure relief tube (70) is tapered to form a limiting portion (71) that is interference-fitted with the limiting section (641); a third guide slope (72) adapted to the second guide slope (642) is provided between the pressure relief tube (70) and the limiting portion (71).

8. The carbon dioxide sparkling water machine with air pressure monitoring according to claim 1, characterized in that: The guide section (64) protrudes outward near the upper end to form a plurality of limiting protrusions (681), and the top of the pressure measuring follower (65) is recessed downward to form a guide limiting groove (682) whose cross section is adapted to the limiting protrusion (681). When the limiting protrusion (681) abuts against the bottom surface of the guide limiting groove (682), the highest position of the pressure measuring follower (65) does not exceed the pressure equalizing hole (411).

9. The carbon dioxide sparkling water machine with air pressure monitoring according to claim 1, characterized in that: The air pressure monitoring assembly (80) further includes an air pressure indicator light (84) provided on a loop formed by each contact group (82) and the control module (83).

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