Blending device for producing soda water

Abstract

The utility model belongs to the technical field of soda water production, and particularly relates to a blending device for producing soda water, which comprises a storage tank, a feeding tank, a water pump and a carbon dioxide filling device, and also comprises a water pumping pipe connected with one end of the water pump and comprising a first water pipe and a second water pipe which are connected with each other; the water pumping pipe is connected with the other end of the water pump; the purifying device is arranged between the first water pipe and the second water pipe and comprises a purifying pipe and connecting assemblies, the connecting assemblies are arranged on the two sides of the purifying pipe and are the same in structure, and the purifying pipe is connected with the first water pipe and the second water pipe through the connecting assemblies; the water pumping pipe and the water pumping pipe are both connected into the storage tank in a penetrating mode. The purification pipe has the beneficial effects that the connecting assemblies are arranged on the two sides of the purification pipe and are the same in structure, so that the mounting and connecting stability can be ensured, the purification pipe is convenient to mount and dismount, and the purification pipe is effectively prevented from being damaged in the repeated dismounting process.

Description

Technical Field

[0001] The present application belongs to the technical field of soda water production, and in particular relates to a mixing device for producing soda water. Background Art

[0002] Soda water, also known as weak alkaline water, is a beverage with a weak alkaline nature. It is often added with soda water sweeteners and spices. There is also soda water without added sweeteners on the market. Soda water can be naturally formed or artificially produced using weak alkaline effervescent tablets, soda effervescent tablets, and robots. The first step in the production of soda water is to sterilize the raw water and kill harmful bacteria in the water.

[0003] The patent with publication number CN115770495A discloses a rapid preparation device for producing soda water beverages, including a storage tank, a feed tank, a water pump and a carbon dioxide filling device, the bottom of the feed tank is connected with a feed pipe, the feed pipe is obliquely connected to the top right end of the storage tank, the water pump is fixedly arranged at the top left end of the storage tank, the inner end of the water pump is connected with a pumping pipe, the pumping pipe is a hose structure, the outer end of the water pump is connected with a pumping pipe, the pumping pipe and the pumping pipe are connected to the storage tank, and the bottom middle end of the storage tank is provided with a discharge port. In the above patent, a purification cylinder is set to purify and filter the floating foam impurities to improve the quality of the beverage, but in actual use, the purification cylinder needs to be disassembled for cleaning, and the structure that simply relies on the flange and bolt riveting can be quickly disassembled, but after multiple disassembly, the thread will be worn and cannot be tightened, and it needs to be replaced again, causing unnecessary losses, and needs to be improved. Utility Model Content

[0004] The purpose of this application is to provide a mixing device for producing soda water, which can solve the above problems.

[0005] The purpose of the present application is to provide a mixing device for producing soda water, including a storage tank, a feed tank, a water pump and a carbon dioxide filling device, and also includes:

[0006] A water pumping pipe connected to one end of the water pump, comprising a first water pipe and a second water pipe connected to each other;

[0007] A pump water pipe, connected to the other end of the water pump;

[0008] A purification device is arranged between the first water pipe and the second water pipe, comprising a purification pipe and a connecting assembly, wherein the connecting assembly is arranged on both sides of the purification pipe and has the same structure, and the purification pipe is connected to the first water pipe and the second water pipe through the connecting assembly;

[0009] Wherein, the water suction pipe and the water pump pipe are both connected through the storage tank.

[0010] The above-mentioned mixing device for producing soda water includes a storage tank, a feed tank, a water pump, a carbon dioxide filling device, a water pump pipe and a water pump pipe. The water pump pipe is connected to one end of the water pump and is composed of a first water pipe and a second water pipe connected to each other. The purification device is arranged between the first water pipe and the second water pipe to ensure effective filtration and purification of floating foam impurities. The purification device includes a purification pipe and a connecting component. The connecting component is arranged on both sides of the purification pipe and has the same structure, so as to ensure the stability of installation and connection, thereby facilitating the installation and disassembly of the purification pipe and effectively avoiding damage to the purification pipe during multiple disassembly processes.

[0011] Furthermore, the connection component includes:

[0012] A first flange is disposed on the first water pipe;

[0013] A second flange is arranged on the purification pipe and corresponds to the first flange;

[0014] A mounting groove is provided on the second flange, a locking member is provided in the mounting groove, and a threaded hole is provided on the locking member;

[0015] A first mounting hole, disposed on the second flange and connected to the threaded hole;

[0016] A second mounting hole, disposed on the first flange and connected to the threaded hole;

[0017] The connecting piece comprises a limiting portion and a rod portion, wherein the rod portion is provided with an external thread matching the threaded hole;

[0018] The rod passes through the second mounting hole and the first mounting hole in sequence and is connected with the threaded hole.

[0019] The first flange is arranged on the first water pipe for positioning and fixing, and the second flange is arranged on the purification pipe, corresponding to the first flange, and the two are used to ensure that the purification pipe can be accurately and stably connected to the first water pipe and the second water pipe. The mounting groove is arranged on the second flange, and the locking member is located in the mounting groove, and a threaded hole is arranged inside the mounting groove for threaded connection with the rod of the connector. The first mounting hole is arranged on the second flange and is connected with the threaded hole, and the second mounting hole is arranged on the first flange, corresponding to the position of the first mounting hole. The first mounting hole and the second mounting hole are both used to provide a channel for the rod of the connector so that it can pass smoothly and connect with the threaded hole. The connector includes a limiting portion and a rod portion, and the limiting portion is used to prevent the connector from being over-inserted or falling off to ensure the stability of the connection. The external thread on the rod portion can enable the connector to be tightly combined with the locking member by threaded connection.

[0020] During the connection process, the first flange and the second flange are first aligned to ensure that the first mounting hole, the second mounting hole and the threaded hole are connected. Then, the rod of the connecting piece is passed through the second mounting hole and the first mounting hole in turn, and threadedly connected to the threaded hole. As the connecting piece is tightened, the first flange and the second flange are tightly connected together, thereby achieving a stable connection between the first water pipe, the purification pipe and the second water pipe. The connecting assembly ensures the stability and sealing of the connection, and also facilitates the disassembly and maintenance of the device. The locking piece with the threaded hole is a replaceable object and can be replaced if damaged. The cost is low and the replacement is convenient. There will be no problem of flange wear causing inability to tighten, and there will be no need to replace the entire suction pipe or purification pipe due to wear, thereby reducing costs.

[0021] Furthermore: the inner diameters of the first mounting hole and the second mounting hole are the same, and the inner diameters of the first mounting hole and the second mounting hole are larger than the outer diameter of the rod, and a movable space is formed between the rod and the first mounting hole and the second mounting hole.

[0022] In the present application, the inner diameters of the first mounting hole and the second mounting hole are the same and larger than the outer diameter of the rod. At this time, the rod will not directly contact the inner walls of the first mounting hole and the second mounting hole during the tightening and loosening process, thereby effectively avoiding the occurrence of thread wear problems. At the same time, an activity space is formed between the rod and the first mounting hole and the second mounting hole, and the activity space provides space for subsequent structural installation and activities.

[0023] Furthermore, a first mounting ring and a second mounting ring are arranged in the activity space at intervals, the first mounting ring is connected to the outer wall of the rod, the second mounting ring is connected to the inner wall of the first mounting hole, and an elastic member is also arranged between the first mounting ring and the second mounting ring.

[0024] Through the arrangement of the first mounting ring, the second mounting ring and the elastic member, the elastic member is a spring. When installing the purification tube, as the connecting member is gradually tightened, the second mounting ring squeezes the spring, and the spring generates a reaction force and presses the first mounting ring and the second mounting ring together, thereby improving the fastening effect of the installation. When replacing the purification tube, as the connecting member is gradually loosened, the spring resets and provides elastic force to the first mounting ring and the second mounting ring, thereby pushing the first mounting ring away from the second mounting ring, thereby facilitating the user to loosen and remove the connecting member, further improving the efficiency of installation and disassembly.

[0025] Furthermore, the connection component also includes:

[0026] A mounting platform, disposed on the first flange;

[0027] A sealing cover is arranged on the mounting platform and connected to the mounting platform;

[0028] The mounting platform is fixedly connected to the first flange, and the second mounting hole passes through the mounting platform. The sealing cover is provided with a limiting hole connected to the second mounting hole, and the inner diameter of the limiting hole is the same as that of the rod.

[0029] By setting up the mounting platform and the sealing cover, the limiting part can be prevented from directly contacting the first flange, thereby activating the protective function. At the same time, the sealing cover not only has the effect of expanding the contact area, thereby improving the fastening effect of the connector, but also can limit the connector, thereby preventing the rod of the connector from being offset during installation and avoiding shaking after installation.

[0030] Furthermore, the purification tube includes a tube body and a metal filter, a PP cotton filter element and an activated carbon filter element arranged inside the tube body. The metal filter, the PP cotton filter element and the activated carbon filter element are arranged inside the tube body in sequence from top to bottom.

[0031] The purification tube is mainly composed of a tube body and a metal filter, a PP cotton filter element and an activated carbon filter element arranged inside the tube body. The metal filter is located at the top of the purification tube, the PP cotton filter element is located below the metal filter element, and the activated carbon filter element is located at the bottom of the tube body. These three filter elements are arranged in sequence from top to bottom inside the tube body, forming a layer-by-layer filtering structure, which can effectively filter and purify impurities and foam, thereby obtaining pure soda water with a good taste.

[0032] The beneficial effects of this application are:

[0033] 1. By arranging the purification device between the first water pipe and the second water pipe, the floating foam impurities are effectively filtered and purified. The purification device includes a purification pipe and a connecting component. The connecting component is arranged on both sides of the purification pipe and has the same structure, so as to ensure the stability of installation and connection, thereby facilitating the installation and disassembly of the purification pipe and effectively avoiding damage to the purification pipe during multiple disassembly processes;

[0034] 2. The inner diameters of the first mounting hole and the second mounting hole are the same and larger than the outer diameter of the rod. At this time, the rod will not directly contact the inner walls of the first mounting hole and the second mounting hole during tightening and loosening, thereby effectively avoiding the problem of thread wear. At the same time, an activity space is formed between the rod and the first mounting hole and the second mounting hole, and the activity space provides space for subsequent structural installation and activities;

[0035] 3. Through the arrangement of the first mounting ring, the second mounting ring and the elastic member, when installing the purification tube, as the connecting member is gradually tightened, the second mounting ring squeezes the spring, and the spring generates a reaction force and presses the first mounting ring and the second mounting ring together, thereby improving the fastening effect of the installation. When replacing the purification tube, as the connecting member is gradually loosened, the spring resets and provides elastic force to the first mounting ring and the second mounting ring, thereby pushing the first mounting ring away from the second mounting ring, thereby facilitating the user to loosen and remove the connecting member, further improving the efficiency of installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the utility model;

[0037] Figure 2 yes Figure 1 A magnified view of middle;

[0038] Figure 3 This is a schematic diagram of the installation structure of the utility model purification tube;

[0039] Figure 4 yes Figure 3 Enlarged view of B. The reference numerals in the figure are: 100, storage tank; 120, feed tank; 130, water pump; 140, carbon dioxide filling device; 200, water suction pipe; 210, first water pipe; 220, second water pipe; 300, pump water pipe; 400, purification pipe; 410, pipe body; 420, metal filter; 430, PP cotton filter element; 440, activated carbon filter element; 500, connecting assembly; 510, first flange; 520, second flange; 530, mounting groove; 531, locking member; 532, threaded hole; 540, first mounting hole; 550, second mounting hole; 560, connecting member; 561, limiting part; 562, rod; 570, activity space; 571, first mounting ring; 572, second mounting ring; 573, elastic member; 580, mounting table; 581, sealing cover; 582, limiting hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] The following is a detailed description of the mixing device for producing soda water provided in the embodiment of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0043] Embodiment 1:

[0044] like Figures 1 to 3 As shown, the embodiment of the present application provides a mixing device for producing soda water, including a storage tank 100, a feed tank 120, a water pump 130 and a carbon dioxide filling device 140, and also includes:

[0045] A water pumping pipe 200, connected to one end of the water pump 130, includes a first water pipe 210 and a second water pipe 220 connected to each other;

[0046] A water pump pipe 300 connected to the other end of the water pump 130;

[0047] The purification device is arranged between the first water pipe 210 and the second water pipe 220, and includes a purification pipe 400 and a connecting assembly 500. The connecting assembly 500 is arranged on both sides of the purification pipe 400 and has the same structure. The purification pipe 400 is connected to the first water pipe 210 and the second water pipe 220 through the connecting assembly 500;

[0048] The water extraction pipe 200 and the water pump pipe 300 are both connected through the storage tank 100 .

[0049] In some implementations of the embodiments of the present application, Figure 1 As shown, a mixing device for producing soda water using the above-mentioned method comprises a storage tank 100, a feed tank 120, a water pump 130, a carbon dioxide filling device 140, and a water pumping pipe 200 and a water pumping pipe 300. The water pumping pipe 200 is connected to one end of the water pump 130 and is composed of a first water pipe 210 and a second water pipe 220 connected to each other. The purification device is arranged between the first water pipe 210 and the second water pipe 220 to ensure effective filtration and purification of floating foam impurities. The purification device comprises a purification pipe 400 and a connecting assembly 500. The connecting assembly 500 is arranged on both sides of the purification pipe 400 and has the same structure, so as to ensure the stability of installation and connection, thereby facilitating the installation and disassembly of the purification pipe 400 and effectively preventing the purification pipe 400 from being damaged during multiple disassembly processes.

[0050] In addition, the purification tube 400 includes a tube body 410 and a metal filter 420, a PP cotton filter element 430 and an activated carbon filter element 440 arranged inside the tube body 410. The metal filter 420, the PP cotton filter element 430 and the activated carbon filter element 440 are arranged inside the tube body 410 in sequence from top to bottom.

[0051] The purification tube 400 is mainly composed of a tube body 410 and a metal filter 420, a PP cotton filter element 430 and an activated carbon filter element 440 arranged inside the tube body 410. The metal filter 420 is located at the top of the purification tube 400, the PP cotton filter element 430 is located below the metal filter 420, and the activated carbon filter element 440 is located at the bottom of the tube body 410. These three filter elements are arranged in sequence inside the tube body 410 from top to bottom, forming a layer-by-layer filtering structure, which can effectively filter and purify impurities and foam, thereby obtaining pure soda water with a good taste.

[0052] Embodiment 2:

[0053] An embodiment of the present application provides a mixing device for producing soda water. In addition to the above-mentioned technical features, the mixing device for producing soda water in the embodiment of the present application also includes the following technical features.

[0054] like Figures 2 to 4 As shown, the connection assembly 500 includes:

[0055] A first flange 510 is disposed on the first water pipe 210;

[0056] The second flange 520 is disposed on the purification pipe 400 and corresponds to the first flange 510;

[0057] The mounting groove 530 is provided on the second flange 520 , a locking member 531 is provided in the mounting groove 530 , and a threaded hole 532 is provided on the locking member 531 ;

[0058] A first mounting hole 540 is provided on the second flange 520 and communicates with the threaded hole 532;

[0059] A second mounting hole 550 is provided on the first flange 510 and communicates with the threaded hole 532;

[0060] The connecting member 560 includes a limiting portion 561 and a rod portion 562 , and the rod portion 562 is provided with an external thread adapted to the threaded hole 532 ;

[0061] The rod portion 562 passes through the second mounting hole 550 and the first mounting hole 540 in sequence and is connected to the threaded hole 532 .

[0062] In the embodiment of the present application, the first flange 510 is arranged on the first water pipe 210 for positioning and fixing, and the second flange 520 is arranged on the purification pipe 400, corresponding to the first flange 510, and the two are used to ensure that the purification pipe 400 can be accurately and stably connected to the first water pipe 210 and the second water pipe 220. The mounting groove 530 is arranged on the second flange 520, and the locking member 531 is located in the mounting groove 530, and a threaded hole 532 is arranged inside the mounting groove 530 for threaded connection with the rod 562 of the connecting member 560. The first mounting hole 540 is arranged on the second flange 520 and communicates with the threaded hole 532, and the second mounting hole 550 is arranged on the first flange 510, corresponding to the position of the first mounting hole 540, and the first mounting hole 540 and the second mounting hole 550 are used to provide a channel for the rod 562 of the connecting member 560 so that it can pass smoothly and connect with the threaded hole 532. The connector 560 includes a limit portion 561 and a rod portion 562. The limit portion 561 is used to prevent the connector 560 from being over-inserted or falling off to ensure the stability of the connection. The external thread on the rod portion 562 allows the connector 560 to be tightly combined with the locking member 531 through a threaded connection.

[0063] During the connection process, the first flange 510 and the second flange 520 are first aligned to ensure that the first mounting hole 540, the second mounting hole 550 and the threaded hole 532 are connected. Then, the rod 562 of the connecting member 560 is passed through the second mounting hole 550 and the first mounting hole 540 in sequence, and is threadedly connected to the threaded hole 532. As the connecting member 560 is tightened, the first flange 510 and the second flange 520 are tightly connected together, thereby achieving a stable connection between the first water pipe 210, the purification pipe 400 and the second water pipe 220. The connecting assembly 500 ensures the stability and sealing of the connection, and also facilitates the disassembly and maintenance of the device. The locking member 531 with the threaded hole 532 is a replaceable object, which can be replaced if damaged. The cost is low and the replacement is convenient. There will be no problem of flange wear leading to inability to tighten, and there will be no need to replace the entire suction pipe 200 or the purification pipe 400 due to wear, thereby reducing the cost.

[0064] Embodiment 3:

[0065] An embodiment of the present application provides a mixing device for producing soda water. In addition to the above-mentioned technical features, the mixing device for producing soda water in the embodiment of the present application also includes the following technical features.

[0066] like Figure 4 As shown, the inner diameters of the first mounting hole 540 and the second mounting hole 550 are the same, and the inner diameters of the first mounting hole 540 and the second mounting hole 550 are larger than the outer diameter of the rod 562 , and a movable space 570 is formed between the rod 562 and the first mounting hole 540 and the second mounting hole 550 .

[0067] In the embodiment of the present application, in the present application, the inner diameters of the first mounting hole 540 and the second mounting hole 550 are the same and larger than the outer diameter of the rod 562. At this time, the rod 562 will not directly contact the inner walls of the first mounting hole 540 and the second mounting hole 550 during the tightening and loosening process, thereby effectively avoiding the occurrence of thread wear problems. At the same time, an activity space 570 is formed between the rod 562 and the first mounting hole 540 and the second mounting hole 550, and the activity space 570 provides space for subsequent structural installation and activities.

[0068] The connection assembly 500 further includes:

[0069] The mounting platform 580 is disposed on the first flange 510;

[0070] A sealing cover 581 is disposed on the mounting platform 580 and connected to the mounting platform 580;

[0071] The mounting platform 580 is fixedly connected to the first flange 510 , and the second mounting hole 550 passes through the mounting platform 580 . The sealing cover 581 is provided with a limiting hole 582 connected to the second mounting hole 550 , and the inner diameter of the limiting hole 582 is the same as that of the rod 562 .

[0072] By setting the mounting platform 580 and the sealing cover 581, the limiting portion 561 can be prevented from directly contacting the first flange 510, thereby activating the protective function. At the same time, the sealing cover 581 not only has the effect of expanding the contact area, thereby improving the fastening effect of the connecting member 560, but also can limit the connecting member 560, thereby preventing the rod portion 562 of the connecting member 560 from being offset during installation, thereby avoiding shaking after installation.

[0073] Embodiment 4:

[0074] An embodiment of the present application provides a mixing device for producing soda water. In addition to the above-mentioned technical features, the mixing device for producing soda water in the embodiment of the present application also includes the following technical features.

[0075] like Figure 4 As shown, a first mounting ring 571 and a second mounting ring 572 are arranged in the activity space 570 at intervals. The first mounting ring 571 is connected to the outer wall of the rod portion 562, and the second mounting ring 572 is connected to the inner wall of the first mounting hole 540. An elastic member 573 is also arranged between the first mounting ring 571 and the second mounting ring 572.

[0076] In the embodiment of the present application, by setting the first mounting ring 571, the second mounting ring 572 and the elastic member 573, the elastic member 573 is a spring. When installing the purification tube 400, as the connecting member 560 is gradually tightened, the second mounting ring 572 squeezes the spring, and the spring generates a reaction force and presses the first mounting ring 571 and the second mounting ring 572 together, thereby improving the fastening effect of the installation. When replacing the purification tube 400, as the connecting member 560 is gradually loosened, the spring resets and provides elastic force to the first mounting ring 571 and the second mounting ring 572, thereby pushing the first mounting ring 571 gradually away from the second mounting ring 572, thereby facilitating the user to loosen and remove the connecting member 560, further improving the efficiency of installation and disassembly.

[0077] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A mixing device for producing soda water, comprising a storage tank (100), a feed tank (120), a water pump (130) and a carbon dioxide filling device (140), characterized in that: Also includes: A water pumping pipe (200), connected to one end of the water pump (130), comprising a first water pipe (210) and a second water pipe (220) connected to each other; A water pump pipe (300) connected to the other end of the water pump (130); A purification device is arranged between a first water pipe (210) and a second water pipe (220), comprising a purification pipe (400) and a connecting assembly (500), wherein the connecting assembly (500) is arranged on both sides of the purification pipe (400) and has the same structure, and the purification pipe (400) is connected to the first water pipe (210) and the second water pipe (220) via the connecting assembly (500); Wherein, the water extraction pipe (200) and the water pump pipe (300) are both connected through the storage tank (100); The connection assembly (500) comprises: A first flange (510) is disposed on the first water pipe (210); A second flange (520) is disposed on the purification pipe (400) and corresponds to the first flange (510); A mounting groove (530) is arranged on the second flange (520), a locking member (531) is arranged in the mounting groove (530), and a threaded hole (532) is arranged on the locking member (531); A first mounting hole (540) is disposed on the second flange (520) and is connected to the threaded hole (532); A second mounting hole (550) is disposed on the first flange (510) and is connected to the threaded hole (532); The connecting member (560) comprises a limiting portion (561) and a rod portion (562), wherein the rod portion (562) is provided with an external thread matched with the threaded hole (532); The rod (562) passes through the second mounting hole (550) and the first mounting hole (540) in sequence and is connected to the threaded hole (532); The first mounting hole (540) and the second mounting hole (550) have the same inner diameter, and the inner diameter of the first mounting hole (540) and the second mounting hole (550) are greater than the outer diameter of the rod (562), and a movable space (570) is formed between the rod (562) and the first mounting hole (540) and the second mounting hole (550).

2. A mixing device for producing soda water according to claim 1, characterized in that: A first mounting ring (571) and a second mounting ring (572) are arranged in the movable space (570) at intervals. The first mounting ring (571) is connected to the outer wall of the rod portion (562), and the second mounting ring (572) is connected to the inner wall of the first mounting hole (540). An elastic member (573) is also arranged between the first mounting ring (571) and the second mounting ring (572).

3. A mixing device for producing soda water according to claim 2, characterized in that: The connection assembly (500) further comprises: A mounting platform (580) is disposed on the first flange (510); A sealing cover (581) is disposed on the mounting platform (580) and connected to the mounting platform (580); The mounting platform (580) is fixedly connected to the first flange (510), and the second mounting hole (550) passes through the mounting platform (580). The sealing cover (581) is provided with a limiting hole (582) connected to the second mounting hole (550), and the inner diameter of the limiting hole (582) is the same as that of the rod (562).

4. A mixing device for producing soda water according to claim 3, characterized in that: The purification tube (400) comprises a tube body (410) and a metal filter (420), a PP cotton filter element (430) and an activated carbon filter element (440) arranged inside the tube body (410); the metal filter (420), the PP cotton filter element (430) and the activated carbon filter element (440) are arranged inside the tube body (410) in sequence from top to bottom.

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