Direct water dispenser

Abstract

The utility model relates to the technical field of direct water dispensers, and discloses a direct water dispenser which comprises a case, a water inlet is communicated with the outer wall of the right side of the case, a front water filter is fixedly connected with the outer wall of the water inlet, a multi-stage filter barrel is communicated with the left side of the water inlet, a plurality of mounting rings are fixedly connected with the inner wall of the multi-stage filter barrel, and the mounting rings are fixedly connected with the water inlet. The middle lower part of the inner wall of the multi-stage filtering barrel is in sliding connection with a front activated carbon filter, the middle part of the inner wall of the multi-stage filtering barrel is in sliding connection with a nano ceramic filter, the middle upper part of the multi-stage filtering barrel is in sliding connection with a rear activated carbon filter, and the middle part of the bottom of the inner wall of the case is fixedly connected with an instant heating barrel. According to the utility model, the nano ceramic filter is arranged in the multi-stage filter vat, so that bacteria and viruses in water are filtered by utilizing a nano-scale microporous structure, the generation of wastewater is reduced, and the utilization rate of water resources is improved.

Description

Technical Field

[0001] This utility model relates to the field of direct drinking water machine technology, and in particular to a direct drinking water machine. Background Technology

[0002] As people's living standards improve, their requirements for drinking water quality are also increasing. As a device that can provide instant purification, heating, or cooling of drinking water, direct drinking water machines are used in homes, offices, schools, and hospitals. They can deeply purify raw water, removing all harmful substances from tap water and producing high-quality drinking water that meets or even exceeds national drinking water standards. Moreover, direct drinking water machines can produce fresh and clean water on demand, without the need for a long wait for boiling and cooling. Cold water, room temperature water, and hot water temperatures are all available, allowing people to enjoy a safe, pure, and convenient drinking water experience anytime, anywhere, ensuring hydration at every moment of life and work.

[0003] A search revealed Chinese patent publication number CN211712789U, which discloses a direct drinking water machine and its usage method. The machine includes a pre-filter (PP cotton filter), an activated carbon filter, a post-filter (PP cotton filter), a booster pump, and a first RO membrane filter, all connected sequentially via pipes. The purified water outlet of the first RO membrane filter is connected to a purified water tank. The concentrated water outlet of the first RO membrane filter is connected to the raw water inlet of a second RO membrane filter. The purified water outlet of the second RO membrane filter is connected to the purified water tank. The concentrated water outlet of the second RO membrane filter... The water outlet is connected to the concentrate return pipeline, the concentrate regulating valve, and the concentrate discharge solenoid valve through a four-way valve. The concentrate return pipeline is equipped with the concentrate return regulating valve and the concentrate return solenoid valve in sequence along the direction of concentrate return movement. The outlet of the concentrate return solenoid valve is connected to the inlet of the booster pump. This utility model can reduce the waste of concentrate, increase the recycling of concentrate, slow down the concentration difference, extend the service life of the RO membrane filter, and reduce costs. However, in actual use, the use of RO membrane reverse osmosis technology will generate a large amount of wastewater. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a direct drinking water machine, which aims to improve the problem of generating a large amount of wastewater in the existing technology that uses RO membrane reverse osmosis technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a direct drinking water machine, comprising a casing, an inlet connected to the right outer wall of the casing, a pre-filter fixedly connected to the outer wall of the inlet, a multi-stage filter barrel connected to the left side of the inlet, multiple mounting rings fixedly connected to the inner wall of the multi-stage filter barrel, a pre-activated carbon filter slidably connected to the lower middle part of the inner wall of the multi-stage filter barrel, a nano-ceramic filter slidably connected to the middle part of the inner wall of the multi-stage filter barrel, a post-activated carbon filter slidably connected to the upper middle part of the multi-stage filter barrel, an instant heating barrel fixedly connected to the bottom middle part of the inner wall of the casing, water pipes connected to the front and rear sides of the instant heating barrel, a water pump connected to the left side of each of the two water pipes, a heat preservation barrel fixedly connected to the front left side of the bottom of the inner wall of the casing, a valve shell connected to the right side of the outer wall of the heat preservation barrel, a one-way valve assembly provided inside the valve shell, a quick cooling barrel fixedly connected to the rear left side of the bottom of the inner wall of the casing, and an installation mechanism provided inside the multi-stage filter barrel.

[0006] Through the above technical solution, a direct drinking water system integrating filtration, heating, cooling, and heat preservation is constructed. The pre-filter initially purifies the water source, the multi-stage filter canisters deeply filter to ensure excellent water quality, the instant heating canister enables rapid heating, the heat preservation canister maintains the hot water temperature, the quick cooling canister provides cold water, and the one-way valve assembly ensures the one-way flow of water.

[0007] As a further description of the above technical solution:

[0008] The mounting mechanism includes multiple sliders. Two sliders on the same side are slidably connected to the inner wall of the mounting ring. The outer walls of the multiple mounting rings are provided with through grooves on the front and back sides. The outer walls of the top two mounting rings are provided with sliding grooves on the top left and right sides. The inner walls of the top two mounting rings are slidably connected with two sliding rods on the front and back sides. The bottom of the multiple sliding rods is fixedly connected with inclined blocks, and the top of the multiple sliding rods is fixedly connected with top plates. The outer walls of the bottom mounting ring are rotatably connected with locking plates on the top front and back sides.

[0009] The above technical solutions ensure that the filter installation process is standardized and efficient, with all components working together to ensure a stable installation. Disassembly is simple and easy, facilitating regular maintenance and replacement of the filter, and guaranteeing the long-term stable operation of the multi-stage filter cartridge.

[0010] As a further description of the above technical solution:

[0011] The one-way valve assembly includes a fixing block, the outer wall of which is fixedly connected to the left side of the inner wall of the valve housing, a plug is fixedly connected to the right side of the inner wall of the valve housing, a plug rod is slidably connected to the inner wall of the fixing block, a piston is fixedly connected to the right end of the plug rod, a limit plate is fixedly connected to the middle of the outer wall of the plug rod, and an anti-detachment plate is fixedly connected to the left end of the plug rod.

[0012] The above technical solutions prevent hot water in the insulation tank from flowing back into the instant heating tank, avoid repeated heating of hot water to prevent the generation of harmful substances, ensure the quality of hot water, maintain the normal direction of water flow in the entire water system, and ensure stable operation of the equipment.

[0013] As a further description of the above technical solution:

[0014] A water receiving platform is fixedly connected to the top of the chassis. Multiple indicator lights are fixedly connected to the front side of the outer wall of the water receiving platform, and multiple water inlets are fixedly connected to the top of the inner wall of the water receiving platform.

[0015] The above technical solution provides users with a convenient water connection point, multiple water inlets can meet the needs of multiple people connecting to water at the same time, and indicator lights can intuitively display the working status of the equipment, making it easy for users to understand the equipment's operation.

[0016] As a further description of the above technical solution:

[0017] A switch is fixedly connected to the front side of the outer wall of each of the multiple water inlets, and a display screen is fixedly connected to the right side of the outer wall of the water receiving platform.

[0018] Through the above technical solution, users can independently control the water flow at each water inlet to meet personalized water connection needs, and the display screen can show more detailed information, providing users with more comprehensive equipment operating parameters.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the chassis is rotatably connected to two doors on both the front and rear sides, and the outer walls of the multiple doors are provided with grooves.

[0021] The above technical solution facilitates staff to open the enclosure door for inspection, maintenance, and component replacement of the equipment inside. The grooved design makes opening the enclosure door easier and improves operational convenience.

[0022] As a further description of the above technical solution:

[0023] Each of the multiple cabinet doors has a lock lug fixedly connected to its outer wall, and the inner walls of two lock lugs on the same side are slidably connected to the same padlock.

[0024] The above technical solution can prevent unauthorized personnel from opening the cabinet door at will, protect the safety of the internal components of the water dispenser, avoid damage to the equipment due to human error or malicious sabotage, and ensure the normal operation of the equipment.

[0025] As a further description of the above technical solution:

[0026] The top of the multi-stage filter barrel is equipped with a detection sensor, and the top of the multi-stage filter barrel is threadedly connected to a barrel lid.

[0027] Through the above technical solution: the detection sensor can monitor the water quality and water pressure parameters in the multi-stage filter tank in real time, providing data support for the equipment's operating status, so as to detect problems and carry out maintenance in a timely manner. The tank lid adopts a threaded connection, which not only ensures the airtightness of the filter tank and prevents water leakage, but also makes it convenient to open the tank lid to check, clean and replace the internal filter when needed.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, a nano-ceramic filter is set in a multi-stage filter tank. Its nano-scale microporous structure filters bacteria and viruses in the water while reducing wastewater generation and improving the utilization rate of water resources. At the same time, the one-way valve assembly ensures the one-way flow of water and prevents hot water from flowing back and being repeatedly heated to form nitrite.

[0030] 2. In this utility model, two sliders on the same side of the installation mechanism can slide on the inner wall of the installation ring, and through grooves are opened on the front and back sides of the outer wall of the installation ring, and sliding grooves are opened on the top left and right sides of the top two outer walls of the installation ring. This makes the filter have a clear and smooth movement path and positioning method during installation. Installation can be completed in a specific order, which improves installation efficiency. At the same time, after the filter is installed in place, the width of the slider is greater than the width of the through groove, so that the water at the bottom cannot leak from the installation ring, ensuring the sealing of the internal water system of the direct drinking water machine. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of a direct drinking water machine proposed in this utility model;

[0032] Figure 2 This is a partial structural schematic diagram of a direct drinking water machine proposed in this utility model;

[0033] Figure 3 This is a cross-sectional view of a multi-stage filter tank for a direct drinking water machine according to this utility model.

[0034] Figure 4 This is a schematic diagram of the structure of a one-way valve assembly for a direct drinking water machine according to this utility model;

[0035] Figure 5 This is a schematic diagram of the installation mechanism of a direct drinking water machine proposed in this utility model.

[0036] Legend:

[0037] 1. Chassis; 2. Mounting mechanism; 201. Slider; 202. Through groove; 203. Slide groove; 204. Slide rod; 205. Inclined block; 206. Top plate; 207. Locking plate; 3. Water inlet; 4. Pre-filter; 5. Multi-stage filter tank; 6. Mounting ring; 7. Pre-activated carbon filter; 8. Nano-ceramic filter; 9. Post-activated carbon filter; 10. Instant heating tank; 11. Water pipe; 2. Water pump; 13. Valve housing; 14. Insulated tank; 15. Quick-cooling tank; 16. Fixing block; 17. Plug; 18. Plug rod; 19. Piston; 20. Limiting plate; 21. Anti-detachment plate; 22. Water receiving platform; 23. Indicator light; 24. Water inlet; 25. Switch; 26. Display screen; 27. Box door; 28. Pull groove; 29. ​​Lock lug; 30. Padlock; 31. Detection sensor; 32. Tank lid. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] See attached document Figure 2 Appendix Figure 3 and attached Figure 4This utility model provides an embodiment of a direct drinking water machine, including a casing 1. The casing 1 serves as the load-bearing structure of the entire machine, providing installation space and protection for the internal components. A water inlet 3 is connected to the right outer wall of the casing 1, allowing access to an external water source so that water can flow into the direct drinking water machine for treatment. A pre-filter 4 is fixedly connected to the outer wall of the water inlet 3, which can initially filter larger particles of impurities in the water, reducing the burden on subsequent filtration components. A multi-stage filter tank 5 is connected to the left side of the water inlet 3. The multi-stage filter tank 5 is the main site for deep filtration of water. Multiple mounting rings 6 are fixedly connected to the inner wall of the multi-stage filter tank 5, used to fix each stage of the filter and ensure its stable position within the tank. A pre-activated carbon filter 7 is slidably connected to the lower middle section. This pre-activated carbon filter 7 adsorbs residual chlorine, odors, and some organic pollutants in the water, improving the taste. A nano-ceramic filter 8 is slidably connected to the middle of the inner wall of the multi-stage filter tank 5. The nano-ceramic filter 8, with its nano-scale microporous structure, effectively removes bacteria and viruses from the water while reducing wastewater generation. A post-activated carbon filter 9 is slidably connected to the upper middle section of the multi-stage filter tank 5. This post-activated carbon filter 9 further adsorbs residual impurities and odors in the water, ensuring water purity and optimizing taste. An instant heating tank 10 is fixedly connected to the bottom center of the inner wall of the casing 1. The instant heating tank 10 can heat water to the set temperature in a short time, fulfilling the user's need for instant hot water. Water pipes 11 are connected to both the front and rear sides of the casing 0. These pipes 11 are responsible for transmitting water flow, delivering water that has undergone different treatment stages to the corresponding locations. Water pumps 12 are connected to the left sides of both water pipes 11. When the pumps 12 start, they generate a pressure difference, propelling the water through the pipes 11 and ensuring the power of water circulation. A heat preservation tank 14 is fixedly connected to the bottom left front side of the inner wall of the casing 1. The heat preservation tank 14 maintains the hot water at a suitable temperature, allowing users to easily access hot water at the appropriate temperature. A valve housing 13 is connected to the right side of the outer wall of the heat preservation tank 14. The valve housing 13 provides installation space for the internal one-way valve assembly and guides the water flow direction. The one-way valve assembly is installed inside the valve housing 13. This assembly controls the unidirectional flow of water, preventing backflow. The one-way valve assembly includes a fixing block 16. The fixing block 16 is fixed to the left side of the inner wall of the valve body 13, serving to support and position other components. The outer wall of the fixing block 16 is fixedly connected to the left side of the inner wall of the valve body 13. A plug 17 is fixedly connected to the right side of the inner wall of the valve body 13. The plug 17 cooperates with the piston 19 to open and close the passage. A stopper rod 18 is slidably connected to the inner wall of the fixing block 16. Under water pressure, the stopper rod 18 drives the piston 19 to move, controlling the water flow. The piston 19 is fixedly connected to the right end of the stopper rod 18. The piston 19 seals or opens the plug 17 according to changes in water pressure to ensure unidirectional water flow. A limit plate 20 is fixedly connected to the middle of the outer wall of the stopper rod 18. The limit plate 20 restricts the movement range of the stopper rod 18 to prevent excessive movement. An anti-detachment plate 21 is fixedly connected to the left end of the stopper rod 18.The anti-detachment plate 21 prevents the stopper rod 18 from detaching from the fixing block 16, ensuring the normal operation of the one-way valve assembly. A rapid cooling tank 15 is fixedly connected to the rear left side of the bottom inner wall of the casing 1. The rapid cooling tank 15 can quickly lower the water temperature to provide cold water to the user. The multi-stage filter tank 5 has an installation mechanism 2 inside.

[0040] Specifically, water flows in from the inlet 3 on the right side of the casing 1. The pre-filter 4 at the inlet 3 works first, filtering out larger particles of sediment and rust, reducing the burden on subsequent components. The pre-filtered water enters the multi-stage filter tank 5. Inside the tank, a pre-activated carbon filter 7, a nano-ceramic filter 8, and a post-activated carbon filter 9 are fixed by mounting rings 6. The water first passes through the pre-activated carbon filter 7 in the lower part of the inner wall of the multi-stage filter tank 5, where residual chlorine, odors, and some organic pollutants are adsorbed. Then, it flows through the nano-ceramic filter 8 in the middle, whose nano-scale microporous structure removes bacteria and viruses, reducing wastewater generation. Finally, it passes through the post-activated carbon filter 9 in the upper middle part, where residual impurities and odors are further adsorbed. To ensure water purity and improve taste, filtered water flows through water pipe 11 into the instant heating tank 10 at the bottom center of the inner wall of the casing 1. Water pipes 11 on the front and rear sides of the instant heating tank 10 are connected to water pump 12. When water pump 12 starts, it generates a pressure difference to drive the water flow. When hot water is needed, the instant heating tank 10 quickly heats to the set temperature. Part of the hot water enters the insulation tank 14 on the left front side of the bottom of the inner wall of the casing 1 through water pipe 11, valve shell 13 and its internal one-way valve assembly to keep it warm. The hot water pushes the stopper rod 18 to move the piston 19 to the right to open the passage and enter the insulation tank 14. When it flows back, the piston 19 moves to the left to block the port 17. The other part of the water, under the action of water pump 12, enters the rapid cooling tank 15 on the left rear side of the bottom of the inner wall of the casing 1 through water pipe 11 to provide cooling water.

[0041] See attached document Figure 3 and attached Figure 5The mounting mechanism 2 includes multiple sliders 201, which connect the filter to the mounting ring 6 and provide sliding guidance for filter installation. Two sliders 201 on the same side are slidably connected to the inner wall of the mounting ring 6, allowing the filter to be installed and removed along the mounting ring 6. Through grooves 202 are provided on the front and rear sides of the outer walls of the multiple mounting rings 6, facilitating the passage of the sliders 201 on the filter and also providing a certain limiting effect on the sliders 201 after installation. Sliding grooves 203 are provided on the top left and right sides of the outer walls of the top two mounting rings 6, providing a track for the movement of the sliding rods 204 and assisting in the installation and positioning of the filter. Two sliding rods are slidably connected to the front and rear sides of the inner walls of the top two mounting rings 6. 204. The slide bar 204 slides in the slide groove 203, driving the inclined block 205 and the top plate 206 to move, realizing the auxiliary function of filter installation. The bottom of multiple slide bars 204 are fixedly connected to the inclined block 205. When the filter is installed, the inclined block 205 cooperates with the slider 201 to guide the slider 201 to the designated position using the inclined principle. The top of multiple slide bars 204 is fixedly connected to the top plate 206. The top plate 206 can be pushed out when needed to release the lock on the slider 201 or to provide support during installation. The outer wall of the bottom mounting ring 6 is rotatably connected to the front and rear sides of the top. After the filter is installed in place, the locking plate 207 rotates to the appropriate position to lock the filter and prevent it from moving accidentally.

[0042] Specifically, each filter has a slider 201 fixed on its outer wall at the front and back. The width of the slider 201 decreases progressively from top to bottom, and the width of the through groove 202 also decreases progressively from top to bottom. The width of the through groove 202 at the previous level is the same as the width of the slider 201 at the next level. The width of the through groove 202 on the same mounting ring 6 is smaller than the width of the slider 201. During installation, the post-activated carbon filter 9 is first installed on the bottom mounting ring 6. The sliders 201 on the post-activated carbon filter 9 decrease from the top and middle... The two mounting rings 6 pass through the through grooves 202 and are engaged in the through groove 202 of the bottom mounting ring 6. The width of this through groove 202 is the same as the width of the slider 201 on the post-activated carbon filter 9. Then, the locking plate 207 is rotated above the through groove 202 to fix the post-activated carbon filter 9. Then, the nano-ceramic filter 8 is installed. After the two sliders 201 of the nano-ceramic filter 8 pass through the top through groove 202, they are rotated 90 degrees above the middle mounting ring 6 and then engaged downwards in the sliding groove 203. Rotate the slide 203 another 90 degrees until the two sliders 201 reach the center of the channel 202. The width of the sliders 201 is greater than the width of the channel 202 to prevent water leakage from the bottom through the mounting ring 6. Finally, install the pre-activated carbon filter 7 by inserting the two sliders 201 of the pre-activated carbon filter 7 directly downwards into the slide 203. Then rotate the slide 203 another 90 degrees until the two sliders 201 reach the center of the channel 202. Finally, install the nano-ceramic filter 8 and the pre-activated carbon filter. When the filter 7 is rotated 90 degrees, the slider 201 connects with the inclined surface of the inclined block 205. During the sliding process of the slider 201, the inclined block 205 is pressed upward, and the slide rod 204 pushes out the top plate 206 until the slider 201 reaches the center of the through groove 202. The inclined block 205 loses pressure and falls. The vertical surfaces of the adjacent sides of the two inclined blocks 205 lock the slider 201 in the current position. When it is necessary to disassemble the filter, the top plate 206 is moved upward to release the lock on the slider 201.

[0043] See attached document Figure 1 and attached Figure 2A water receiving platform 22 is fixedly connected to the top of the casing 1. The platform provides a convenient location for users to collect water. Multiple indicator lights 23 are fixedly connected to the front of the outer wall of the platform. These lights display the water dispenser's operating status and water temperature information through different lighting conditions, allowing users to intuitively understand the equipment's operating status. Multiple water outlets 24 are fixedly connected to the top of the inner wall of the platform. These outlets provide water for users to collect, meeting the needs of different users simultaneously. Switches 25 are fixedly connected to the front of the outer walls of each outlet 24, controlling the water flow. Users can turn the water flow on or off as needed. A display screen 26 is fixedly connected to the right side of the outer wall of the platform. This screen displays various parameters of the water dispenser, providing users with detailed equipment operating data. Two doors 27 are rotatably connected to the front and rear sides of the outer wall of the casing 1. These doors can be opened by rotating them. The opening and closing mechanism facilitates the inspection, maintenance, and replacement of components inside the casing 1. Multiple casing doors 27 have grooves 28 on their outer walls, allowing users to easily pull the doors, making opening and closing more convenient. Locking lugs 29 are fixedly connected to the outer walls of multiple casing doors 27, providing mounting positions for padlocks 30 to lock the doors 27. The same padlock 30 is slidably connected to the inner walls of two locking lugs 29 on the same side, preventing unauthorized personnel from opening the doors 27 and ensuring the safety of the internal components of the water purifier. A detection sensor 31 is installed on the top of the multi-stage filter tank 5, which monitors the water quality and pressure parameters inside the tank in real time, providing data support for the normal operation of the equipment. A lid 32 is threaded onto the top of the multi-stage filter tank 5, sealing it to prevent water leakage and allowing for easy cleaning and maintenance when needed.

[0044] Specifically, the water receiving platform 22 is equipped with multiple water inlets 24 and switches 25, providing users with a convenient water receiving experience and meeting the needs of multiple people receiving water at the same time. The water flow can be controlled as needed at any time. The indicator light 23 on the front side of the water receiving platform 22 and the display screen 26 on the right side present the working status, water temperature and various parameters of the water purifier in an intuitive way, allowing users to have a clear understanding of the equipment's operating status. The cabinet door 27, which is connected to the front and rear sides of the casing 1, is easy to open through the pull groove 28, facilitating the inspection, maintenance and replacement of internal components. The design of the lock lug 29 and padlock 30 effectively prevents unauthorized personnel from opening the cabinet door 27, ensuring equipment safety. The detection sensor 31 on the top of the multi-stage filter tank 5 monitors water quality and pressure parameters in real time, ensuring filtration effect and stable operation of the equipment. The threaded connection of the tank lid 32 achieves a good seal and is easy to open for internal cleaning and maintenance.

[0045] Working principle: Water flows in from the inlet 3 on the right side of the casing 1. The pre-filter 4 on the inlet 3 performs preliminary filtration, removing larger particles of sediment and rust, thus reducing the workload of subsequent filtration components. The pre-filtered water enters the multi-stage filter tank 5. Inside the multi-stage filter tank 5, a pre-activated carbon filter 7, a nano-ceramic filter 8, and a post-activated carbon filter 9 are fixedly installed by mounting rings 6. The water first flows through the pre-activated carbon filter 7, located in the lower middle part of the inner wall of the multi-stage filter tank 5. This filter can adsorb residual chlorine and impurities in the water. After removing some organic pollutants, the water then reaches the nano-ceramic filter 8 in the middle of the inner wall of the multi-stage filter tank 5. Utilizing a nano-scale microporous structure, this filter removes bacteria and viruses from the water while reducing wastewater generation. Finally, the water passes through the post-activated carbon filter 9 in the upper part of the multi-stage filter tank 5, which further adsorbs residual impurities and odors, ensuring water purity and improving taste. The filtered water then flows through water pipe 11 into the instant heating tank 10 at the bottom center of the inner wall of the casing 1. The water pipes 11 on the front and back sides of the instant heating tank 10 are connected to the water... Pump 12, once started, generates a pressure difference, propelling water through water pipe 11. If the user requires hot water, the instant heating tank 10 quickly heats the water to the set temperature, providing instant hot water. A portion of the hot water is transported through water pipe 11 to the insulation tank 14 located on the front left side of the bottom of the inner wall of the casing 1. Before entering the insulation tank 14, the hot water passes through valve housing 13 and its internal one-way valve assembly. As the hot water flows from right to left, the water pressure pushes the stopper rod 18, causing piston 19 to move to the right, opening the passage and allowing the hot water to smoothly enter the insulation tank 14. 4. When the water in the heat preservation tank 14 tends to flow back, the piston 19 will move to the left under the action of water pressure to block the plug 17, preventing the hot water from flowing back into the instant heating tank 10, ensuring the one-way flow of water, and avoiding the formation of nitrite by repeated heating of hot water. The heat preservation tank 14 can keep the hot water at a suitable temperature, which is convenient for users to take at any time. Another part of the water that passes through the instant heating tank 10 will be transported to the rapid cooling tank 15 on the rear left side of the bottom of the inner wall of the casing 1 through the water pipe 11 under the action of the water pump 12. The rapid cooling tank 15 can quickly reduce the water temperature and provide cold water for users.

[0046] Furthermore, the two sliders 201 on the same side of the mounting mechanism 2 can slide on the inner wall of the mounting ring 6, providing an initial movement path for the filter installation. The outer wall of the mounting ring 6 has through grooves 202 on its front and rear sides, and the top two mounting rings 6 also have sliding grooves 203 on their top left and right sides. These designs are to allow the filter to pass through and be positioned smoothly. When installing the filter, a specific sequence and operating steps are followed. First, the post-activated carbon filter 9 is installed. The sliders 201 on the post-activated carbon filter 9 slide through the through grooves 202 of the two mounting rings 6 at the top and middle. The filter passes through the groove 202 of the bottom mounting ring 6 and is finally inserted into the groove 202. The width of the groove 202 is the same as the width of the slider 201 on the post-activated carbon filter 9, ensuring accurate installation. Next, rotate the locking plates 207 on the front and rear sides of the top of the outer wall of the bottom mounting ring 6 to the top of the groove 202 to firmly fix the post-activated carbon filter 9 and prevent it from loosening. Then install the nano-ceramic filter 8. After its two sliders 201 pass through the top groove 202, rotate them 90 degrees above the middle mounting ring 6 and then insert them downwards into the slide groove 203. Then rotate them again in the slide groove 203. Rotate 90 degrees so that the two sliders 201 are in the center of the through groove 202. Since the width of the sliders 201 is greater than the width of the through groove 202, water leakage from the bottom through the mounting ring 6 is prevented. Finally, install the pre-activated carbon filter 7, which is installed in a similar way to the nano-ceramic filter 8. Insert the two sliders 201 directly downwards into the slide groove 203, and then rotate 90 degrees within the slide groove 203 so that the sliders 201 are in the center of the through groove 202. During the rotation process of installing the nano-ceramic filter 8 and the pre-activated carbon filter 7, the sliders 201 will interact with the inclined block 20. The inclined surfaces of the two inclined blocks 201 are connected. As the slider 201 slides, the inclined block 205 is pressed upward, which drives the slide rod 204 to move upward, thereby pushing out the top plate 206. When the slider 201 reaches the center of the through groove 202, the inclined block 205 loses pressure and falls. The vertical surfaces of the adjacent sides of the two inclined blocks 205 lock the slider 201 in the current position, realizing the stable installation of the filter. When the filter needs to be disassembled, simply move the top plate 206 upward, so that the inclined block 205 moves upward, and release the lock on the slider 201. The filter can then be easily removed for maintenance or replacement.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A direct drinking water machine, comprising a casing (1), characterized in that: The right outer wall of the casing (1) is connected to a water inlet (3), and a pre-filter (4) is fixedly connected to the outer wall of the water inlet (3). The left side of the water inlet (3) is connected to a multi-stage filter tank (5). Multiple mounting rings (6) are fixedly connected to the inner wall of the multi-stage filter tank (5). A pre-activated carbon filter (7) is slidably connected to the lower middle part of the inner wall of the multi-stage filter tank (5). A nano-ceramic filter (8) is slidably connected to the middle part of the inner wall of the multi-stage filter tank (5). A post-activated carbon filter (9) is slidably connected to the upper middle part of the multi-stage filter tank (5). (1) The inner wall bottom center is fixedly connected to an instant heating barrel (10), and the front and rear sides of the instant heating barrel (10) are connected to water pipes (11). The left side of the two water pipes (11) is connected to a water pump (12). The bottom left front side of the inner wall of the casing (1) is fixedly connected to an insulation barrel (14). The right side of the outer wall of the insulation barrel (14) is connected to a valve shell (13). The valve shell (13) is equipped with a one-way valve assembly. The bottom left rear side of the inner wall of the casing (1) is fixedly connected to a quick cooling barrel (15). The multi-stage filter barrel (5) is equipped with an installation mechanism (2).

2. The direct drinking water machine according to claim 1, characterized in that: The mounting mechanism (2) includes multiple sliders (201). Two sliders (201) on the same side are slidably connected to the inner wall of the mounting ring (6). The outer walls of the multiple mounting rings (6) are provided with through grooves (202) on the front and back sides. The top two mounting rings (6) are provided with sliding grooves (203) on the top left and right sides. The inner walls of the top two mounting rings (6) are slidably connected with two sliding rods (204). The bottom of the multiple sliding rods (204) is fixedly connected with inclined blocks (205). The top of the multiple sliding rods (204) is fixedly connected with top plates (206). The bottom mounting ring (6) is rotatably connected with locking plates (207) on the top front and back sides of the outer wall.

3. A direct drinking water machine according to claim 1, characterized in that: The one-way valve assembly includes a fixing block (16), the outer wall of which is fixedly connected to the left side of the inner wall of the valve housing (13), a plug (17) is fixedly connected to the right side of the inner wall of the valve housing (13), a plug rod (18) is slidably connected to the inner wall of the fixing block (16), a piston (19) is fixedly connected to the right end of the plug rod (18), a limit plate (20) is fixedly connected to the middle of the outer wall of the plug rod (18), and an anti-detachment plate (21) is fixedly connected to the left end of the plug rod (18).

4. A direct drinking water machine according to claim 1, characterized in that: A water receiving platform (22) is fixedly connected to the top of the chassis (1). Multiple indicator lights (23) are fixedly connected to the front side of the outer wall of the water receiving platform (22). Multiple water inlets (24) are fixedly connected to the top of the inner wall of the water receiving platform (22).

5. A direct drinking water machine according to claim 4, characterized in that: A switch (25) is fixedly connected to the front side of the outer wall of each of the multiple water inlets (24), and a display screen (26) is fixedly connected to the right side of the outer wall of the water receiving platform (22).

6. A direct drinking water machine according to claim 1, characterized in that: The outer wall of the chassis (1) is rotatably connected to two doors (27), and the outer wall of each of the multiple doors (27) is provided with grooves (28).

7. A direct drinking water machine according to claim 6, characterized in that: The outer walls of the multiple cabinet doors (27) are fixedly connected with lock lugs (29), and the inner walls of the two lock lugs (29) on the same side are slidably connected with the same padlock (30).

8. A direct drinking water machine according to claim 1, characterized in that: The top of the multi-stage filter barrel (5) is equipped with a detection sensor (31), and the top of the multi-stage filter barrel (5) is threadedly connected with a barrel cover (32).

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