Gas-water mixing device and water purifying device

Abstract

The utility model provides an air-water mixing device and a water purifying plant, the air-water mixing device comprises a shell and an aerator, the shell is provided with a water inlet end, an accommodating cavity, a water outlet end and an air inlet pipe, the accommodating cavity is arranged between the water inlet end and the water outlet end, the first end of the air inlet pipe is arranged on the outer side of the shell, and the second end of the air inlet pipe extends into the accommodating cavity; the aerator is arranged in the containing cavity, the air inlet pipe is communicated with the aerator, an air-water mixing channel is arranged on the inner side and / or the outer side of the aerator, and the air-water mixing channel is communicated with the water inlet end and the water outlet end respectively; the water purifying device comprises a filtering device, an ozone supply device and the gas-water mixing device, the gas-water mixing device is connected to the water inlet end of the filtering device, and the gas outlet end of the ozone supply device is communicated with the gas inlet pipe of the gas-water mixing device; the mixer is small in size, convenient to install and good in mixing effect.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to an air-water mixing device and a water purification device. Background Technology

[0002] In recent years, with increased public concern about drinking water safety, ozone, as a highly efficient and broad-spectrum disinfectant, has been widely used in water purification devices. Ozone's strong oxidizing properties allow it to rapidly inactivate bacteria, viruses, and other microorganisms in water, and its decomposition only produces oxygen, leaving no chemical residue pollution. It is considered an ideal alternative to traditional chlorine disinfection.

[0003] The disinfection efficiency of ozone in practical applications is highly dependent on its mixing efficiency with water. However, current ozone mixing technologies generally suffer from drawbacks such as large volume, poor mixing effect, and inconvenient installation. Utility Model Content

[0004] The primary objective of this invention is to provide a small-sized, easy-to-install, and highly effective gas-water mixing device.

[0005] The second objective of this invention is to provide a water purification device that includes the aforementioned air-water mixing device.

[0006] To achieve the aforementioned first objective, this utility model provides an air-water mixing device, comprising a shell and an aerator. The shell is provided with a water inlet end, a receiving cavity, a water outlet end, and an air inlet pipe. The receiving cavity is located between the water inlet end and the water outlet end. The first end of the air inlet pipe is located on the outside of the shell, and the second end of the air inlet pipe extends into the receiving cavity. The aerator is located in the receiving cavity, and the air inlet pipe is connected to the aerator. An air-water mixing channel is provided on the inner and / or outer side of the aerator, and the air-water mixing channel is connected to the water inlet end and the water outlet end, respectively.

[0007] As can be seen from the above scheme, through the above settings, the gas is first introduced into the aerator, and the numerous tiny air holes on the aerator disperse the gas into a large number of tiny bubbles, which facilitates the rapid and uniform diffusion of the bubbles into the water. This increases the contact area between the water and the gas, which is beneficial for the gas to dissolve quickly into the water, ensuring uniform mixing of gas and water and improving the mixing effect. This utility model also has the advantages of simple structure, small size, and low noise. This utility model can also be applied to water purification devices and other devices that require gas-water mixing.

[0008] A further proposed solution is to have the outer peripheral wall of the aerator adjacent to the cavity wall of the receiving chamber, and to have a first air-water mixing channel provided on the inner side of the aerator.

[0009] As can be seen from the above scheme, the water flows through the inside of the aerator through the above settings, which facilitates the uniform mixing of water and air bubbles. In addition, the first air-water mixing channel is set inside the aerator to avoid the water flow directly impacting the aerator, which helps to extend the service life of the aerator.

[0010] A further proposed solution is to place the aerator in the middle of the receiving cavity, and form a second air-water mixing channel between the outer peripheral wall of the aerator and the cavity wall of the receiving cavity.

[0011] As can be seen from the above scheme, with the above settings, the water flows through the outside of the aerator, which facilitates the uniform mixing of water and air bubbles.

[0012] A further option is to place the aerator in the middle of the receiving cavity, form a third air-water mixing channel between the outer peripheral wall of the aerator and the cavity wall of the receiving cavity, and provide a fourth air-water mixing channel inside the aerator.

[0013] As can be seen from the above scheme, with the above settings, part of the water flows through the inside of the aerator and the other part flows through the outside of the aerator. This embodiment also sets up a third air-water mixing channel and a fourth air-water mixing channel, which is beneficial to further increase the contact area between the aerator and the water flow, further improve the gas dissolution rate, and thus increase the concentration of gas dissolved in water.

[0014] A further design involves installing a nozzle between the water inlet and the aerator on the shell. The inner diameter of the nozzle gradually decreases from one end near the water inlet to the other end, and both ends of the nozzle are connected to the water inlet and the air-water mixing channel, respectively.

[0015] As can be seen from the above scheme, through the Venturi effect and Bernoulli's law, as the inner diameter of the nozzle gradually decreases, the water flow velocity gradually increases and the water pressure gradually decreases. The tiny pores on the surface of the aerator are in a low-pressure state, which facilitates the supply of gas and helps to reduce the pressure required to supply gas into the aerator.

[0016] A further proposed solution is to install a spiral section within the gas-water mixing channel, with the spiral section containing a spiral channel that is connected to the gas-water mixing channel.

[0017] As can be seen from the above scheme, the spiral channel can increase the water flow path and thus prolong the water flow time in the air-water mixing channel, allowing more time for the bubbles to dissolve into the water. On the other hand, the spiral channel can change the direction of water flow multiple times, playing a stirring role, which is conducive to further uniform mixing of bubbles and water.

[0018] A further option is to provide a detachable connection structure on the water inlet and / or water outlet of the housing, which may include a threaded connection structure or a snap-fit ​​connection structure.

[0019] As can be seen from the above scheme, the above settings facilitate the quick connection of the gas-water mixing device of this utility model with a water purification device or other devices that require gas-water mixing, thus making installation and disassembly convenient.

[0020] A further option is that the containment chamber includes a straight section and an expansion section that are interconnected. The straight section is located near the inlet end, and the expansion section is located near the outlet end. The aerator is at least partially located in the straight section.

[0021] As can be seen from the above scheme, the straight section allows for quick mixing of air bubbles and water, while the expansion section provides sufficient space for the air intake pipe.

[0022] A further option is to connect the air inlet pipe directly to the air inlet end of the aerator, or to connect the air inlet pipe to the air inlet end of the aerator via a flexible hose.

[0023] To achieve the second objective mentioned above, this utility model provides a water purification device, including a filter device, an ozone supply device, and the aforementioned gas-water mixing device. The gas-water mixing device is connected to the water inlet pipe of the filter device, and the gas outlet of the ozone supply device is connected to the air inlet pipe of the gas-water mixing device.

[0024] As can be seen from the above scheme, through the above settings, ozone gas is introduced into the aerator through the ozone supply device. The aerator evenly disperses the ozone gas into the water in the form of tiny bubbles, increasing the contact area between the water and the ozone gas, thereby quickly dissolving the ozone gas into the water, increasing the concentration of gas dissolved in the water, and playing a role in disinfection and sterilization. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the first embodiment of the gas-water mixing device of this utility model.

[0026] Figure 2 This is an exploded view of the first embodiment of the gas-water mixing device of this utility model.

[0027] Figure 3 This is a cross-sectional view of the first embodiment of the gas-water mixing device of this utility model.

[0028] Figure 4 This is a structural diagram of the second embodiment of the gas-water mixing device of this utility model.

[0029] Figure 5 This is an exploded view of the second embodiment of the gas-water mixing device of this utility model.

[0030] Figure 6 This is a cross-sectional view of the second embodiment of the gas-water mixing device of this utility model.

[0031] Figure 7This is a structural diagram of the third embodiment of the gas-water mixing device of this utility model.

[0032] Figure 8 This is an exploded view of the third embodiment of the gas-water mixing device of this utility model.

[0033] Figure 9 This is a cross-sectional view of the third embodiment of the gas-water mixing device of this utility model.

[0034] Figure 10 This is a structural diagram of the water purification device of this utility model.

[0035] Figure 11 This is a cross-sectional view of the water purification device of this utility model.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0037] First embodiment of the gas-water mixing device:

[0038] See Figures 1 to 3 The air-water mixing device 10a provided in this embodiment includes a housing 1 and an aerator 2a.

[0039] The housing 1 is provided with a water inlet 111, a receiving cavity 13, a water outlet 121 and an air inlet pipe 122. The receiving cavity 13 is located between the water inlet 111 and the water outlet 121. The first end of the air inlet pipe 122 is located on the outside of the housing 1, and the second end of the air inlet pipe 122 extends into the receiving cavity 13.

[0040] Aerator 2a is disposed within the receiving cavity 13. Air inlet pipe 122 is connected to air inlet end 25a of aerator 2a for supplying gas into the aerator 2a. Air-water mixing channels are provided on the inner and / or outer sides of aerator 2a, and these channels are connected to water inlet end 111 and water outlet end 121, respectively. Aerator 2a is a device capable of generating a large number of bubbles. Numerous tiny pores are provided on the surface of aerator 2a, allowing gas to pass through these pores and enter the air-water mixing channels for convenient and uniform mixing with the water within the channels. In this embodiment, aerator 2a is preferably an aeration stone.

[0041] In this embodiment, the aerator 2a is designed as a hollow annular structure. The outer peripheral wall of the aerator 2a is adjacent to the cavity wall of the receiving cavity 13. A first air-water mixing channel 21 is provided on the inner side of the aerator 2a, and the first air-water mixing channel 21 extends through both axial ends of the aerator 2a. Water entering from the inlet end 111 can pass through the first air-water mixing channel 21. Gas inside the aerator 2a can diffuse from the inner wall of the aerator 2a into the first air-water mixing channel 21. The gas diffuses into the water and forms a large number of tiny bubbles. These bubbles move in the water, increasing the contact area between the water and the gas, accelerating the dissolution rate of the gas, and thus improving the air-water mixing effect. Compared with the prior art, which directly supplies gas into the water through an air pipe, this embodiment can improve the speed and uniformity of air-water mixing and effectively increase the concentration of gas dissolved in the water.

[0042] The housing 1 includes a first housing 11a and a second housing 12a that are interconnected. The water inlet 111 and most of the receiving cavity 13 are located in the first housing 11a, and the water outlet 121 and a small part of the receiving cavity 13 are located in the second housing 12a.

[0043] The first housing 11a is provided with an inlet end 111, a straight pipe section and a first extension section in sequence along its water flow direction. The inlet end 111 can be connected to a tap water pipe. The outer diameter of the straight pipe section is almost equal to or not much different from the outer diameter of the inlet end 111. The straight pipe section can be set to a preset length. The longer the straight pipe section is, the better the air-water mixing effect. The outer diameter of the first extension section expands outward from the end of the straight pipe section.

[0044] The second housing 12a is provided with a second extension section and an outlet end 121 sequentially along its water flow direction. The second extension section matches and is sealed to the first extension section. The outer diameter of the second extension section gradually decreases from the end closest to the first extension section towards the outlet end 121. The outer diameter of the outlet end 121 is smaller than the outer diameter of the inlet end 111, or the outer diameter of the outlet end 121 is equal to the outer diameter of the inlet end 111, or the outer diameter of the outlet end 121 is slightly larger than the outer diameter of the inlet end 111, depending on the specifications of the pipe connected to the outlet end 121. The air-water mixing device of this embodiment can be directly connected to a tap water pipe and has the advantages of simple structure, small size, convenient installation, and good practicality.

[0045] The receiving cavity 13 includes a straight section 131 and an expansion section 132 that are interconnected. The straight section 131 is disposed within the first housing 11a and near the water inlet end 111. The expansion section 132 is disposed between the straight section 131 and the water outlet end 121 and near the water outlet end 121. The expansion section 132 is located inside the first expansion section and the second expansion section. An aerator 2a is disposed within the straight section 131, and the air inlet end 25a of the aerator 2a extends into the expansion section 132. The second end of the air inlet pipe 122 extends into the expansion section 132 and communicates with the air inlet end 25a.

[0046] A nozzle 123 is provided between the water inlet end 111 and the aerator 2a in the housing 1. The nozzle 123 is located in the straight section of the receiving cavity 13. The inner diameter of the nozzle 123 gradually decreases from one end near the water inlet end 111 to the other end. The end with the smaller inner diameter of the nozzle 123 is connected to the first end of the first air-water mixing channel 21 of the aerator 2a. This can achieve air-water mixing, reduce the impact of water flow on the aerator 2a, and extend the service life of the aerator 2a.

[0047] The inner diameter of the first air-water mixing channel 21 is equal to or slightly larger than the inner diameter of the narrowest part of the nozzle 123, and the inner diameter of the first air-water mixing channel 21 is smaller than the inner diameter of the middle and widest part of the nozzle 123.

[0048] According to the Venturi effect and Bernoulli's law, when water flows through the gradually narrowing nozzle 123, its velocity increases while its pressure decreases. When the fluid flows through the narrowest part of the nozzle 123 and the first air-water mixing channel 21, the velocity reaches a maximum value due to the reduced cross-sectional area, while the static pressure drops to a minimum. At this time, an adsorption effect can be generated in the narrowest part of the nozzle 123 and the first air-water mixing channel 21, facilitating the discharge of gas from the aerator 2a. This effectively reduces the air pressure required to supply air to the aerator 2a, allowing gas to be supplied to the aerator 2a even using a lower-power air pump, thus helping to save production costs.

[0049] In this embodiment, the housing 1 is provided with a detachable connection structure on the water inlet end 111 and / or the water outlet end 121, which facilitates connection with the water inlet pipe of a water purification device or other devices that require air-water mixing. The detachable connection structure includes a threaded connection structure or a snap-fit ​​connection structure. In this embodiment, it is preferable to provide an external threaded connection structure on the outer side of both the water inlet end 111 and the water outlet end 121. The external threaded connection structure at the water inlet end 111 can be connected to a water pipe. The diameters of the external threaded connection structure at the water inlet end 111 and the external threaded connection structure at the water outlet end 121 may be equal or unequal, which will not be elaborated further here.

[0050] In this embodiment, a support column 124a is provided inside the second housing 12a. The support column 124a extends along the axial direction of the second housing 12a, that is, it is parallel to the direction of water flow. The aerator 2a is connected to the support column 124b, and one end of the air inlet pipe 122 that extends into the receiving cavity 13 is connected to the air inlet end 25a of the aerator 2a.

[0051] Second embodiment of the gas-water mixing device:

[0052] See Figures 4 to 6Based on the first embodiment of the air-water mixing device described above, the aerator 2b in this embodiment is located in the middle of the receiving cavity 13. An annular second air-water mixing channel 22 is formed between the outer peripheral wall of the aerator 2b and the cavity wall of the receiving cavity 13. The gas in the aerator 2c can be dispersed into the second air-water mixing channel 22. The second air-water mixing channel 22 is connected to the nozzle 123 and the water outlet 121.

[0053] Since the water jet from nozzle 123 can impact aerator 2b, to prevent aerator 2b from shifting position under the impact force, this embodiment provides a support structure inside the second housing 12b, extending into the first housing 11b. The support structure includes a mounting ring 112 and multiple support arms 113. The mounting ring 112 is fixed to the same end of the multiple support arms 113, which are arranged circumferentially along the mounting ring 112. The support arms 113, mounting ring 112, and second housing 12b are integrally formed. One end of aerator 2b is located inside the mounting ring 112, and the other end extends into the straight section 131. The air inlet end 25b of aerator 2b passes through the mounting ring 112, and the air inlet pipe 122 is connected to the air inlet end 25b of aerator 2b via a flexible hose.

[0054] In this embodiment, the narrower end of the nozzle 123 extends into the straight section 131 and is positioned corresponding to the end of the aerator 2b. When the water flow impacts the end of the aerator 2b, it can disperse in all directions, allowing the water flow to enter the second air-water mixing channel 22.

[0055] To extend the distance and time for water to travel through the second air-water mixing channel 22, a spiral section (not shown in the figure) can be provided inside the second air-water mixing channel 22. The spiral section extends spirally along the inner wall of the straight section 131, creating a spiral channel within the spiral section, allowing water and air bubbles to flow along the spiral channel. The spiral channel can also change the direction of water flow multiple times, providing a certain stirring effect and further improving the degree of air-water mixing.

[0056] Third embodiment of the gas-water mixing device:

[0057] See Figures 7 to 9 Based on the first embodiment of the air-water mixing device described above, the aerator 2c in this embodiment is disposed in the middle of the receiving cavity 13. An annular third air-water mixing channel 23 is formed between the outer peripheral wall of the aerator 2c and the cavity wall of the receiving cavity 13. A fourth air-water mixing channel 24 is disposed inside the aerator 2c, and the fourth air-water mixing channel 24 passes through both axial ends of the aerator 2c. The gas in the aerator 2c can be simultaneously dispersed into the third air-water mixing channel 23 and the fourth air-water mixing channel 24. Both the third air-water mixing channel 23 and the fourth air-water mixing channel 24 are connected to the nozzle 123 and the water outlet 121.

[0058] When water is introduced, part of the water flows through the third gas-water mixing channel 23 and mixes with the gas inside the third gas-water mixing channel 23, while another part flows through the fourth gas-water mixing channel 24 and mixes with the gas inside the fourth gas-water mixing channel 24. In this embodiment, the water flows through two gas-water mixing channels simultaneously, which helps to further increase the contact area between the gas and water, and further increase the gas-water mixing speed and the speed at which the gas dissolves in the water.

[0059] The inner diameter of the third air-water mixing channel 23 is equal to or slightly larger than the inner diameter of the narrowest part of the nozzle 123, and the inner diameter of the third air-water mixing channel 23 is smaller than the inner diameter of the middle and widest part of the nozzle 123.

[0060] In the direction of water flow, a preset distance L is spaced between the end of nozzle 123 and the end of aerator 2c, so as to reserve enough space for water to flow through the end of aerator 2c and enter the fourth air-water mixing channel 24.

[0061] According to the Venturi effect and Bernoulli's law, when water flows through the gradually narrowing nozzle 123, its velocity increases while its pressure decreases. When the fluid flows through the narrowest part of the nozzle 123 and the third air-water mixing channel 23, the velocity reaches a higher value due to the reduced cross-sectional area, while the static pressure is lower. At this time, an adsorption effect can be generated in the narrowest part of the nozzle 123 and the third air-water mixing channel 23, which is conducive to the discharge of gas from the aerator 2c, thereby reducing the air pressure required to supply air to the aerator 2c. This allows for the use of a lower-power air pump to supply gas into the aerator 2c, saving production costs.

[0062] To extend the distance and time for water to travel through the fourth gas-water mixing channel 24, a spiral section (not shown in the figure) can be provided inside the fourth gas-water mixing channel 24. The spiral section extends spirally along the inner wall of the straight section 131, forming a spiral channel inside the spiral section, allowing water and air bubbles to flow along the spiral channel. The spiral channel can also change the direction of water flow multiple times, playing a certain stirring role and helping to further improve the degree of gas-water mixing.

[0063] In this embodiment, a plurality of support columns 124b are provided inside the second housing 12c. The support columns 124b are located outside the third air-water mixing channel 23. The support columns 124b extend along the axial direction of the second housing 12c, that is, parallel to the water flow direction. The aerator 2c is connected to the support column 124b. One end of the air inlet pipe 122 extends into the receiving cavity 13 and is connected to the air inlet end 25c of the aerator 2c.

[0064] 20 Examples of Water Purification Devices:

[0065] See Figures 10 to 11 This embodiment provides a water purification device 20, including a filter device 201, an ozone supply device (not shown in the figure), and an air-water mixing device 10a / 10b / 10c of any of the above embodiments.

[0066] The filtration device 201 includes a tank 2011 and a filter element 2012 disposed within the tank 2011. A three-way valve 2013 is installed at the top of the tank 2011, and the three-way valve 2013 includes an inlet, an outlet, and a drain outlet. The air-water mixing device 10a is connected to the inlet pipe of the filtration device 201, i.e., connected to the inlet of the three-way valve 2013. The ozone supply device includes an ozone generator and an air pump. The outlet of the ozone generator is connected to the inlet pipe 122 of the air-water mixing device 10a / 10b / 10c. The air pump can supply the ozone gas generated by the ozone generator into the aerators 2a / 2b / 2c within the air-water mixing device 10a / 10b / 10c with relatively low pressure.

[0067] In this embodiment, the water purification device 20 dissolves ozone gas into the water to disinfect and sterilize it. After that, the disinfected and sterilized water and excess ozone bubbles enter the tank 2011 and are filtered by the filter element 2012 before being discharged from the outlet.

[0068] Since the air-water mixing devices 10a / 10b / 10c are located at the water inlet end of the filter device 201, the ozone bubbles that have not yet dissolved in the water can continue to dissolve during the filtration process. This not only improves the disinfection and sterilization effect, but also reduces or prevents excess ozone gas from being discharged from the outlet with the water flow, which is beneficial to improving the utilization rate of ozone gas.

[0069] The water purification device 20 can also connect multiple filtration devices 201 in series at the same time. The water flow that has been disinfected and sterilized, as well as the excess ozone bubbles, are filtered one by one through the multiple filtration devices 201 to improve the cleanliness of the water and reduce the emission of excess ozone gas.

[0070] In summary, this invention, through the above-described configuration, allows gas to be first introduced into the aerator. Utilizing the numerous tiny pores on the aerator, the gas is dispersed into a large number of microbubbles, facilitating the rapid and uniform diffusion of these bubbles into the water. This increases the contact area between water and gas, promoting rapid gas dissolution and ensuring uniform gas-water mixing, thus improving the mixing effect. This invention also boasts advantages such as simple structure, small size, and low noise. Furthermore, this invention can be applied to water purification devices and other devices requiring gas-water mixing.

[0071] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. 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 gas-water mixing device, characterized by, The gas-water mixing device comprises: a housing provided with a water inlet end, a containing cavity, a water outlet end and an air inlet pipe, the containing cavity is arranged between the water inlet end and the water outlet end, the first end of the air inlet pipe is arranged outside the housing, and the second end of the air inlet pipe extends into the containing cavity; an aerator arranged in the containing cavity, the air inlet pipe is communicated with the aerator, and the inner side and / or the outer side of the aerator is provided with a gas-water mixing passage communicated with the water inlet end and the water outlet end respectively.

2. The gas-water mixing device according to claim 1, wherein: the outer peripheral wall of the aerator is adjacent to the cavity wall of the containing cavity, and the inner side of the aerator is provided with a first gas-water mixing passage.

3. The gas-water mixing device according to claim 1, wherein: the aerator is arranged in the middle part of the containing cavity, and the second gas-water mixing passage is formed between the outer peripheral wall of the aerator and the cavity wall of the containing cavity.

4. The gas-water mixing device according to claim 1, wherein: the aerator is arranged in the middle part of the containing cavity, the third gas-water mixing passage is formed between the outer peripheral wall of the aerator and the cavity wall of the containing cavity, and the fourth gas-water mixing passage is arranged in the inner side of the aerator.

5. The gas-water mixing device according to claim 1, wherein: the housing is provided with a nozzle between the water inlet end and the aerator, the inner diameter of the nozzle gradually decreases from one end close to the water inlet end to the other end, and the two ends of the nozzle are communicated with the water inlet end and the gas-water mixing passage respectively.

6. The gas-water mixing device according to claim 3 or 4, wherein: a spiral part is arranged in the gas-water mixing passage, the spiral part is provided with a spiral passage communicated with the gas-water mixing passage.

7. The gas-water mixing device according to claim 1, wherein: the housing is provided with a detachable connecting structure on the water inlet end and / or the water outlet end, the detachable connecting structure comprises a threaded connecting structure or a clamping connecting structure.

8. The gas-water mixing device according to claim 1, wherein: the containing cavity comprises a flat section and an expansion section communicated with each other, the flat section is arranged close to the water inlet end, the expansion section is arranged close to the water outlet end, and the aerator is at least partially arranged in the flat section.

9. The gas-water mixing device according to claim 1, wherein: the air inlet pipe is directly communicated with the air inlet end of the aerator, or the air inlet pipe is communicated with the air inlet end of the aerator through a hose.

10. A water purification device characterized by: The gas-water mixing device according to any one of claims 1 to 9 is connected to the water inlet pipe of a filter device, and the air outlet end of an ozone supply device is communicated with the air inlet pipe of the gas-water mixing device.

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