Gas mixing assembly

Abstract

The utility model relates to the technical field of water purification, and discloses a gas mixing assembly which is provided with a main cavity, a water inlet passage and a water outlet passage, at least two groups of flow turning cavities are formed in the main cavity along a preset direction, and are respectively a first flow turning cavity communicated with the water inlet passage and a second flow turning cavity communicated with the water outlet passage; a plurality of diversion ports communicated with the main cavity are formed in the side wall of the first diversion cavity; and a plurality of confluence ports communicated with the main cavity are formed in the side wall of the second flow turning cavity. According to the utility model, multi-stage circulation and mixing of a water-gas mixture are realized, the contact area and time of water and gas are increased, the mixing effect is enhanced, formation of more uniform and finer micro-nano bubbles is facilitated, the maximum flow guide resistance in the mixing process is reduced by optimizing a flow channel, the water flow speed is improved, the mixing effect is ensured, and the mixing efficiency is improved. The flow of the micro-nano bubble water is not excessively limited, and popularization and application of the micro-bubble water purifier are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to an air mixing component. Background Art

[0002] The functions of traditional water purifiers are relatively single, mainly focusing on removing harmful substances such as impurities, residual chlorine, and heavy metals in water. They are generally used for washing fruits, vegetables or directly as drinking water. To improve the water purification and washing effect of water purifiers, enhance the taste of water and promote human health, the industry has started to introduce bubble generation technology, and water purifier products that can provide micro-nano bubble water, namely micro-bubble water purifiers, have gradually emerged on the market.

[0003] When the external water source water pressure of the existing micro-bubble water purifiers is relatively low, electric pressurization technology is usually adopted to prepare micro-nano bubble water, that is, a booster pump is used to mix and pressurize the water body and gas, and the water-gas mixture after mixing and pressurization flows through an air mixing tank and a bubble releasing device in sequence to form micro-bubble water. Among them, the air mixing tank is used to fully mix the water-vapor mixture transported by the booster pump, so that the gas is more evenly dispersed in the water to form micro-nano bubbles. However, the air mixing tank of the existing micro-bubble water purifiers with electric pressurization has a simple structure, and the water flow is too fast during operation, resulting in a short water-gas contact time and a small water-gas contact area, leading to a low gas dissolution efficiency, and it is increasingly difficult to meet the current customer needs.

[0004] In response, to improve the gas dissolution efficiency of the air mixing tank, different methods have been adopted in the industry. For example, a patent has disclosed an air mixing tank, which realizes secondary gas dissolution by adding a Venturi tube structure in the air mixing tank and using the water flow velocity to form a pressure difference. Although it effectively promotes the water-gas mixing and improves the gas dissolution efficiency of the air mixing tank, it will also cause other technical problems: Since the Venturi tube structure needs to be provided with a contraction section, a throat section and a diffusion section, by adjusting the flow cross-sectional area in different flow channels, the throat section (that is, the flow channel with a smaller flow cross-section and a larger flow velocity) can generate negative pressure to re-inhale the gas in the air mixing tank into the water body to achieve the purpose of secondary gas dissolution. However, due to the need to set the throat section, the minimum flow cross-sectional area of the flow channel in the air mixing tank is restricted, resulting in a small water outlet flow rate of the air mixing tank provided with the Venturi tube structure, which restricts the water outlet efficiency and application range of the micro-bubble water purifier to a certain extent. In addition, due to the complex Venturi tube structure, the production and maintenance costs are relatively high, which is not conducive to popularization; in addition to the air mixing tank that strengthens the air mixing effect by adding a Venturi tube structure, a patent has also disclosed an air mixing tank with a porous medium inside, which enhances the air mixing effect by allowing the water-gas mixture to flow through the porous medium. However, while enhancing the air mixing effect, due to the complexity and irregularity of the pore shape of the porous medium, additional vortexes, backflows and other complex flow phenomena will occur when the water-gas mixture flows in the porous medium, thus increasing the flow resistance and affecting the water outlet flow rate of the air mixing tank.

[0004] Summary of the Invention

[0005] The utility model aims to provide a gas mixing component to solve the above technical problems.

[0006] To achieve the above object, the following technical solutions are provided:

[0007] In a first aspect, the utility model provides a gas mixing component, which has a main cavity, a water inlet passage and a water outlet passage; at least two flow turning cavities are formed inside the main cavity along a preset direction, namely a first flow turning cavity communicating with the water inlet passage and a second flow turning cavity communicating with the water outlet passage;

[0008] A plurality of shunt ports communicating with the main cavity are arranged on the side wall of the first flow turning cavity; a plurality of confluence ports communicating with the main cavity are arranged on the side wall of the second flow turning cavity.

[0009] As an alternative of the gas mixing component provided by the utility model, it includes: a gas mixing pipe, which forms a main cavity, a sealed port communicating with the main cavity and a water outlet passage; a positioning pipe, which is detachably and sealingly connected to the sealed port and forms a water inlet passage; a fixing pipe, which is connected inside the main cavity and forms a second flow turning cavity; a movable cylinder, which is positioned inside the main cavity and is detachably connected to the fixing pipe and forms a first flow turning cavity.

[0010] As an alternative of the gas mixing component provided by the utility model, one end of the movable cylinder is provided with a plugging part adapted to be clamped with the fixing pipe, and the other end is provided with an opening communicating with the first flow turning cavity; one end of the positioning pipe is provided with a water injection pipe communicating with the water inlet passage, the water injection pipe forms a water injection port, the water injection port passes through the opening and extends into the first flow turning cavity, and a plurality of water separation plates are formed at the root of the water injection pipe, and the water separation plates abut against the opening to form a plurality of shunt ports.

[0011] As an alternative of the gas mixing component provided by the utility model, the water injection port has a contact end face that can abut against the inner wall of the first flow turning cavity, and a diversion groove is axially recessed on the contact end face, the diversion groove communicates with the water injection port and radially penetrates through the water injection pipe, and the fluid output from the water injection port is guided by the diversion groove and is divided into the first flow turning cavity.

[0012] As an alternative of the gas mixing component provided by the utility model, a diversion surface is arranged in the first flow turning cavity and is aligned with the water injection port, and the diversion surface is connected to the inner wall of the first flow turning cavity for guiding and buffering the fluid discharged from the water injection port.

[0013] As an alternative to the gas mixing assembly provided by the present utility model, a flow guiding block for guiding the fluid flow direction is provided on the inner wall of the first flow diversion cavity. One end of the flow guiding block points towards the water injection port in alignment, and the side surface of the flow guiding block gradually expands from the end pointing towards the water injection port in alignment and continuously extends to the inner wall of the first flow diversion cavity, and a flow guiding surface is formed on the side surface of the flow guiding block.

[0014] As an alternative to the gas mixing assembly provided by the present utility model, a plurality of flow disturbing plates are provided on the inner wall of one end of the second flow diversion cavity communicating with the water outlet passage.

[0015] As an alternative to the gas mixing assembly provided by the present utility model, the outer wall of the positioning pipe is detachably and sealingly inserted into the sealing port.

[0016] As an alternative to the gas mixing assembly provided by the present utility model, a group of annular grooves are axially provided on the outer wall of the positioning pipe, and a sealing ring for elastically abutting against the inner wall of the sealing port is installed in the annular grooves.

[0017] As an alternative to the gas mixing assembly provided by the present utility model, a connecting plate extends outwards from the outer wall of the gas mixing pipe, and the connecting plate is detachably connected to the positioning pipe through a threaded fastener.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] Compared with the gas mixing structure of the porous medium in the existing electric pressurized microbubble water purifier's gas mixing tank, by providing the first flow diversion cavity, the second flow diversion cavity, and the main cavity, the multi-stage flow and mixing of the water-gas mixture are realized, increasing the contact area and time between water and gas, enhancing the mixing effect, contributing to the formation of more uniform and finer micro-nano bubbles, and also reducing the maximum flow guiding resistance during the mixing process by optimizing the flow path, increasing the water flow rate. While ensuring the mixing effect, it will not overly limit the flow rate of the micro-nano bubble water, which is conducive to the popularization and application of the microbubble water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.

[0021] Figure 1 is a three-dimensional schematic diagram of the water circuit board provided in this embodiment;

[0022] Figure 2 is a cross-sectional schematic diagram of the water circuit board provided in this embodiment;

[0023] Figure 3 It is a schematic structural diagram of the positioning pipe of the water circuit board provided by this embodiment;

[0024] Figure 4 It is a cross-sectional view of the gas mixing assembly provided by this embodiment;

[0025] Figure 5 It is a cross-sectional view of the movable cylinder of the water circuit board provided by this embodiment;

[0026] Figure 6 It is a schematic cross-sectional view of the gas mixing pipe of the water circuit board provided by this embodiment.

[0027] In the figure:

[0028] 1. Water circuit board main body; 11. Water circuit layer; 12. Interface; 2. Mixing port; 3. Mixing passage; 4. Positioning pipe; 41. Water inlet passage; 411. Water inlet port; 412. Water outlet port; 42. Annular groove;

[0029] 43. Sealing ring; 44. Installation groove; 45. Check valve; 46. Water injection pipe; 461. Water injection port; 462. Water isolation plate; 463. Diversion groove; 5. Gas mixing pipe; 51. Water outlet passage; 52. Sealed port; 53. Connection plate; 54. Main cavity; 55. Fixed pipe; 551. Second flow turning cavity; 552. Confluence port; 553. Positioning hole; 554. Turbulence plate; 56. Movable cylinder; 561. First flow turning cavity; 562. Diverging port; 563. Insertion part; 564. Opening; 565. Diversion surface; 566. Fluid guide; 6. Diverting valve. Detailed implementation mode

[0030] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] The functions of traditional water purifiers are relatively single, mainly focusing on removing harmful substances such as impurities, residual chlorine, and heavy metals in water, and are generally used for washing fruits, vegetables or directly as drinking water. To improve the water purification and washing effect of water purifiers, improve the taste of water and promote human health, the industry has started to introduce bubble generation technology, and water purifier products that can provide microbubble water, namely microbubble water purifiers, have gradually emerged on the market.

[0035] To form microbubble water, existing microbubble water purifiers usually install the bubble generation component in series between the water outlet end of the booster pump and the water inlet end of the water outlet faucet. The booster pump delivers the water-gas mixture to the bubble generation component. The water-gas mixture flows through the bubble generation component and is released and burst by the bubble generation component to form microbubble water, which is finally discharged and used through the water outlet faucet. However, the bubble generation components of existing microbubble water purifiers are usually independently arranged and connected to other components through pipelines. Due to the limited internal space of the water purifier, the bubble generation components are usually close to the booster pump. When taking water, since the bubble generation components are independently arranged and have a small volume, the bubble generation components will vibrate and shake under the action of water pressure instantaneously when water passes through them, and are prone to collide with the adjacent booster pump and cause damage, which affects the operation of the water purifier and is prone to generate abnormal noises, reducing the user experience.

[0036] In this regard, the present application provides a waterway plate, which is an integrated structure for connecting water flow channels and components inside the water purifier. Through modular design, it can optimize the overall structure and performance of the water purifier. Figures 1 to 6 The waterway plate includes: a waterway plate body 1, which is formed by overlapping and connecting waterway layers 11 made of food-grade polymer materials (such as PP polypropylene, PE polyethylene), and is provided with multiple interfaces 12, such as raw water inlet, filtered water outlet, RO pure water outlet and RO concentrated water outlet, as well as several filter element interfaces 12, which are used to connect various components of the water purifier (such as filter element, control valve, water pump).

[0037] In this embodiment, the waterway plate further includes a mixing port 2 and a bubble generating assembly, each of which is integrally connected to the waterway plate body 1. A mixing passage 3 is formed within the waterway plate body 1, with the mixing port 2 connected to the input end of the mixing passage 3, and the bubble generating assembly connected to the output end of the mixing passage 3. When the waterway plate is used in a water purifier, the mixing port 2 is connected to the water purifier's booster pump, and the bubble generating assembly is connected to the water purifier's water outlet tap. The booster pump delivers the water-gas mixture through the mixing port 2 into the mixing passage 3 of the waterway plate body 1, and then delivers it to the bubble generating assembly via the mixing passage 3. The bubble generating assembly promotes the mixing of the water and gas, which is released and exploded to form micro-bubble water, which is then discharged through the water outlet tap for use.

[0038] Through the above technical solution, an integrated design is adopted, a mixing passage 3 is set on the waterway plate main body 1, and the bubble generating component that was originally set independently is integrated into the waterway plate main body 1. When the above waterway plate is applied to a water purifier, compared with the existing micro-bubble water purifier in which the bubble generating component is independently set, it can enhance the positioning of the bubble generating component, avoid the bubble generating component from shaking violently due to the water pressure when the water passes through, reduce the possibility of collision between the bubble generating component and other water purifier components (especially the booster pump), enhance the compactness of the structure, help to simplify the assembly process of the water purifier, reduce the number of external water pipes in the inner cavity of the water purifier, make the internal structure of the water purifier simpler, and facilitate subsequent maintenance and cleaning. In addition, unlike the traditional form of "the water-gas mixture is transported from the booster pump to the bubble generating component through a hose", in this embodiment, the mixing passage 3 for transporting the water-gas mixture is integrally formed in the waterway plate main body 1, which is a hard fixed structure. During the transportation process, the mixing passage 3 will not be displaced under the impact of the water-gas mixture and will buffer the water-gas mixture. Its internal surface will fully collide with the water-gas mixture and stir the water-gas mixture, thereby promoting the dissolution of water vapor.

[0039] The bubble generating assembly includes a water-gas mixing device and a bubble releasing device. The water-gas mixing device is equivalent to the gas mixing tank in the existing water purifier. The water-gas mixing device includes a main housing, and the main housing adopts a split structure, that is, the main housing includes a positioning pipe 4 and a gas mixing pipe 5. Among them, the positioning pipe 4 is integrally formed on the main body 1 of the water circuit board. The positioning pipe 4 is formed with a water inlet passage 41. One end of the water inlet passage 41 extends into the interior of the main body 1 of the water circuit board to form a water inlet port 411 communicating with the mixing passage 3, and the other end forms a water outlet port 412 outside the main body 1 of the water circuit board. The gas mixing pipe 5 is detachably connected to the positioning pipe 4 and is formed with a water outlet passage 51. The input end of the water outlet passage 51 is communicated with the water outlet port 412 of the positioning pipe 4. The bubble releasing device is connected in series to the output end of the gas mixing pipe 5. During operation, the mixing passage 3 is connected through the positioning pipe 4, and the water-gas mixture in the mixing passage 3 is transported to the gas mixing pipe 5. The gas mixing pipe 5 is responsible for providing a cavity for the water-gas mixture to be fully mixed and dissolved again, that is, further enhancing the mutual dissolution of water and gas and increasing the gas dissolution amount in the water body. The bubble releasing device then bursts and releases the gas dissolved in the water body through the internal filter screen, so that bubbles meeting the specifications are formed and mixed in the water body to form micro-bubble water. Through the above technical solution, on the basis of the above integrated design, the water-gas mixing device adopts a modular design. The positioning pipe 4 is directly integrated with the main body 1 of the water circuit board, and the gas mixing pipe 5 is tightly connected to the positioning pipe 4 through threaded and snap-fastening detachable methods, enabling users to conveniently clean, repair and replace it, which helps to extend the service life of the assembly.

[0040] The following details the detachable connection method between the gas mixing pipe 5 and the positioning pipe 4:

[0041] One end of the gas mixing pipe 5 extends to form a sealing port 52 communicating with the water outlet passage 51. The sealing port 52 is for the detachable insertion of the water outlet port 412. The gas mixing pipe 5 is connected to the water outlet port 412 of the positioning pipe 4 by means of insertion, which can improve the integral connection degree between the gas mixing pipe 5 and the positioning pipe 4, making the disassembly and installation relatively fast.

[0042] To provide connection strength and connection sealing performance, in this embodiment, at least one set of annular grooves 42 is axially provided on the outer wall of the water outlet port 412, and a sealing ring 43 for elastically abutting against the inner wall of the sealing port 52 is installed in the annular groove 42. During the installation process, when the water outlet port 412 of the positioning pipe 4 is inserted into the sealing port 52 of the gas mixing pipe 5, the sealing ring 43 will be radially compressed, and then reversely abut against the inner wall of the sealing port 52, enhancing the friction between the sealing port 52 and the water outlet port 412, thereby enhancing the connection stability. The sealing ring 43 is usually made of elastic materials such as rubber and silica gel, and has good sealing performance. After being compressed, it can form an effective sealing barrier to prevent fluid leakage at the connection, and the setting of the annular groove 42 can ensure that the sealing ring 43 will not shift or fall off during installation, so as to maintain a long-term sealing effect.

[0043] To further enhance the connection strength between the positioning pipe 4 and the gas mixing pipe 5 and prevent the gas mixing pipe 5 from detaching from the positioning pipe 4 due to fluid impact and displacement, in this embodiment, a connecting plate 53 extends outward from the outer wall of the sealing port 52. The connecting plate 53 is detachably connected to the main body 1 of the water circuit board by threaded fasteners. Since the positioning pipe 4 is integrally connected to the main body 1 of the water circuit board, the connecting plate 53 being detachably connected to the main body 1 of the water circuit board is equivalent to being detachably connected to the positioning pipe 4.

[0044] In addition, in this embodiment, an implementation structure of the water circuit board applied to a multi-waterway and multi-tap design water purifier is also provided. That is, a flow dividing valve 6 is connected to the main body 1 of the water circuit board. The input end of the flow dividing valve 6 communicates with the output end of the mixing passage 3. During operation, the flow dividing valve 6 connects to the faucet for discharging pure water, and the gas-water mixing device connects to the microbubble faucet for discharging microbubble water.

[0045] Furthermore, an installation groove 44 is formed at one end where the water inlet port 411 of the positioning pipe 4 communicates with the mixing passage 3. A check valve 45 is arranged in the installation groove 44. The conducting direction of the check valve is from the mixing passage 3 towards the water inlet port 411. Since the mixing passage 3 for connecting the external water circuit and the gas-water mixing device is integrally formed on the main body 1 of the water circuit board and is a rigid fixed structure, it cannot buffer the gas-water mixture through shaking displacement. The setting of the check valve 45 can not only prevent "fluid backflow from reducing the pressure in the gas mixing pipe 5 and reducing the gas mixing effect", but also play a buffering role, reducing the impact and vibration generated by the gas-water mixture on the water inlet port 411 of the positioning pipe 4. In addition, by setting the check valve 45, when the water circuit board is applied to a water purifier and the water purifier produces pure water, the check valve 45 can be closed under the air pressure of the gas-water mixing device to prevent the gas in the gas-water mixing device from flowing back, ensuring that no microbubble water is produced during the production of pure water and avoiding affecting the taste of the pure water.

[0046] Considering that existing microbubble water purifiers usually adopt an electric boosting technology to prepare micro-nano bubble water when the external water source water pressure is relatively low, that is, a booster pump is used to mix and boost the water body and gas, and the gas-water mixture after mixing and boosting flows through a gas mixing tank (i.e., the gas-water mixing device in this embodiment) and a bubble releasing device in sequence to form microbubble water. Among them, the gas mixing tank is used to fully mix the water-vapor mixture transported by the booster pump, so that the gas is more evenly dispersed in the water to form micro-nano bubbles. However, the gas mixing tank structure of existing electrically boosted microbubble water purifiers is simple, and the water flow is too fast during operation, resulting in a short gas-water contact time and a small gas-water contact area, leading to a low gas dissolution efficiency and becoming increasingly difficult to meet the current customer requirements.

[0047] In response to this, in order to improve the gas dissolving efficiency of the gas mixing tank, different methods have been adopted in the industry and existing patents. For example, by adding a Venturi tube structure inside the gas mixing tank and using the water flow velocity to form a pressure difference to achieve secondary gas dissolution. Although it effectively promotes the mixing of water and gas and improves the gas dissolving efficiency of the gas mixing tank, it will also cause other technical problems at the same time: Since the Venturi tube structure needs to be provided with a contraction section, a throat section, and a diffuser section, by adjusting the flow cross-sectional area in different flow channels, the throat section (i.e., the flow channel with a smaller flow cross-section and a larger flow velocity) can generate negative pressure to re-inhale the gas in the gas mixing tank into the incoming water to achieve the purpose of secondary gas dissolution. However, due to the need to set the throat section, it will greatly limit the minimum flow cross-sectional area of the flow channels in the gas mixing tank, affecting the water outlet flow of the gas mixing tank, and to a certain extent restricting the water outlet efficiency and application range of the microbubble water purifier. In addition, due to the complex structure of the Venturi tube, the production and maintenance costs are relatively high, which is not conducive to popularization. Except for the gas mixing tank that strengthens the gas mixing effect by adding a Venturi tube structure, existing patents also disclose a gas mixing tank with a porous medium inside, which enhances the gas mixing effect by allowing the water-gas mixture to flow through the porous medium. However, while enhancing the gas mixing effect, due to the complexity and irregularity of the pore shape of the porous medium, when the water-gas mixture flows through the porous medium, additional complex flow phenomena such as vortices and backflows will be generated, thereby increasing the flow resistance and affecting the water outlet flow velocity of the gas mixing tank.

[0048] In response to this, to solve the above problems, the present application optimizes and improves the internal structure of the water-gas mixing device: A main cavity 54 is provided inside the water-gas mixing device. Along the water flow direction inside the main cavity 54 (i.e., the incoming water passage 41 towards the outgoing water passage 51), at least two groups of flow turning cavities are provided, namely a first flow turning cavity 561 communicating with the incoming water passage 41 and a second flow turning cavity 551 communicating with the outgoing water passage 51. On the side wall of the first flow turning cavity 561, a number of shunt ports 562 communicating with the main cavity 54 are provided, and on the side wall of the second flow turning cavity 551, a number of confluence ports 552 communicating with the main cavity 54 are provided. During operation, first, the incoming water passage 41 is connected to the mixing passage 3, and the water-gas mixture first enters the first flow turning cavity 561 through the incoming water passage 41. After impacting the first flow turning cavity 561 and undergoing preliminary mixing therein, the preliminarily mixed water-gas mixture then evenly diverges into the main cavity 54 through the shunt ports 562, further promoting the dissolution and dispersion of gas in water. Subsequently, the water-gas mixture fully mixed in the main cavity 54 is re-converged and introduced into the second flow turning cavity 551 through the confluence ports 552, and after undergoing a third round of flow turning and mixing, it is finally discharged outwards through the outgoing water passage 51 in a concentrated manner. Through the above process of "dispersion and flow turning → re-convergence", the frequency of cross-expansion of the water-gas mixture can be greatly increased, the gas dissolution amount in the liquid can be significantly improved, and the microbubble water foamed subsequently has rich foam.

[0049] Compared with the existing electric booster micro-bubble water purifier in which the mixing tank has a built-in Venturi tube structure to promote mixing, the present application realizes multi-stage flow and mixing of the water-gas mixture by setting a main cavity 54, a first flow chamber 561 and a second flow chamber 551 in the water-gas mixing device. This multi-stage flow mixing design not only increases the contact area and time between water and gas, but also enhances the mixing effect through multiple flows, which helps to form more uniform and smaller micro-nano bubbles. While ensuring the mixing effect, it will not affect the flow area of the flow channel or excessively restrict the water outlet flow rate of the micro-nano bubble water, so that the water outlet efficiency is higher, which is conducive to the promotion and application of micro-bubble water purifiers. In addition, this solution of enhancing the mixing effect by optimizing the flow channel to achieve multi-stage flow, compared with the technical solution of setting a porous medium inside the mixing tank to enhance the mixing effect, the water-gas mixture will not be subject to a large diversion resistance during the flow process, and the water outlet is smoother.

[0050] Specifically, the main cavity 54 is formed in the mixing tube 5 of the water-gas mixing device. The two ends of the mixing tube 5 respectively form a water outlet passage 51 and the aforementioned sealing port 52. The sealing port 52 communicates with the main cavity 54. The positioning tube 4 is plugged into the sealing port 52 to seal the main cavity 54. A fixed tube 55 and a movable cylinder 56 are positioned within the main cavity 54. The fixed tube 55 is integrally connected to the inner wall of the main cavity 54 and forms the aforementioned second flow transfer chamber 551. The movable cylinder 56 is detachably connected to the fixed tube 55 and forms the aforementioned first flow transfer chamber 561. Through the above technical solution, the fixed tube 55 is integrally connected to the main cavity 54, and the movable tube is detachably connected to the fixed tube 55, facilitating subsequent maintenance and cleaning. This also effectively reduces the actual production difficulty and cost of the aforementioned "multi-stage flow transfer and mixing mechanism design based on the main cavity 54, the first flow transfer chamber 561, and the second flow transfer chamber 551." In actual production, the mixing tube 5, the main cavity 54, and the fixed tube 55 can be integrally formed by injection molding.

[0051] The specific implementation structure of the detachable connecting fixed tube 55 of the movable cylinder 56 is as follows: a positioning hole 553 is provided at one end of the fixed tube 55 close to the sealing port 52, a plug-in portion 563 is provided at one end of the movable cylinder 56 for fitting into the positioning hole 553, and an opening 564 is provided at the other end thereof for connecting to the first flow conversion chamber 561, and a water injection pipe 46 is provided at one end of the positioning tube 4 for connecting to the water inlet passage 41, and a water injection port 461 is formed at the end of the water injection pipe 46 away from the positioning tube 4 for conveying a water-gas mixture into the first flow conversion chamber 561, and the water injection port 461 passes through the opening 564 and extends into the first flow conversion chamber 561, and a plurality of water baffles 462 are formed at the end of the water injection pipe 46 close to the positioning tube 4, that is, at the root of the water injection pipe 46, and these water baffles 462 abut against the opening 564 and thereby separate the opening 564 to form the plurality of diversion ports 562 mentioned above.

[0052] During installation, the insertion part 563 can be first inserted into the positioning hole 553 for preliminary positioning. Subsequently, the positioning pipe 4 is inserted into the sealing port 52. The water-blocking plate 462 abuts against the opening 564 of the movable cylinder 56 to perform two-way abutting positioning on the movable cylinder 56. The movable cylinder 56 is tightly connected to the fixed pipe 55. The installation process is simple and convenient, easy to operate, and has a low production cost. During maintenance, only by separating the positioning pipe 4 from the sealing port 52 can the movable cylinder 56 be separated from the fixed pipe 55. In addition, the water injection port 461 of the water injection pipe 46 extends into the first flow-turning cavity 561, and a water-blocking plate 462 and an opening 564 are arranged at its root to cooperate to form a diversion port 562. After the water-gas mixture enters the first flow-turning cavity 561 through the water injection port 461 of the water injection pipe 46, it needs to change direction and turn back to flow towards the diversion port 562, and enter the main cavity 54 through the diversion port 562. In this way, the flow path length can be extended as much as possible under the condition of limited cavity volume, the residence time of the water-gas mixture in the water-gas mixing device can be extended, thereby enhancing the gas mixing effect. And when the water-gas mixture is discharged from the water injection pipe 46 and turns back to flow towards the diversion port 562, additional turbulence and shear forces will be generated, which helps the gas to be more evenly dispersed in the water to form finer micro-nano bubbles.

[0053] Based on the above structure, theoretically speaking, the farther the water injection port 461 of the water injection pipe 46, that is, the end of the water injection pipe 46 away from the positioning pipe 4, extends into the first flow-turning cavity 561, the farther the distance between the water injection port 461 of the water injection pipe 46 and the diversion port 562 will be. Similarly, the longer the flow path length of the reverse turning and diversion path of "water injection pipe 46 → first flow-turning cavity 561 → diversion port 562" can be extended, and the residence time of the water-gas mixture in the first flow-turning cavity 561 can be maximally extended, enhancing the gas mixing effect.

[0054] However, when the water injection port 461 of the water injection pipe 46 extends relatively deep into the first flow-turning cavity 561, another problem will be caused: when the water-gas mixture initially enters the water-gas mixing device, it is injected into the first flow-turning cavity 561 through the water injection pipe 46 in a concentrated flow form. The initial water pressure and flow rate of the water-gas mixture are relatively high. When the water injection pipe 46 extends relatively deep into the first flow-turning cavity 561, the distance between the inner wall of the first flow-turning cavity 561 opposite to the water injection port 461 and the water injection port 461 will be relatively close, resulting in a lack of necessary turning and buffering space for the water-gas mixture ejected from the water injection port 461. This will cause the bottom of the movable cylinder 56 in the attached drawing, that is, the inner wall of the first flow-turning cavity 561 opposite to the water injection port 461, to directly collide with the water-gas mixture ejected from the water injection port 461 to form turbulence. And the water-gas mixture after impacting the inner wall of the first flow-turning cavity 561 reversely turns to the diversion port 562 in an irregular diversion form, resulting in low efficiency of the water-gas mixture reversely turning to the diversion port 562, which not only affects the subsequent water injection and the smoothness of the water output of the water-gas mixing device, but may even cause water flow blockage or backflow.

[0055] To solve the "series of problems caused by the water injection port 461 extending deep into the first flow diversion chamber 561", in this embodiment, the structure of the water injection pipe 46 and the internal structure of the first flow diversion chamber 561 are optimized and improved.

[0056] For example, in this embodiment, the water injection port 461 extends into the first flow diversion chamber 561 and has a contact end face that abuts against the inner wall of the first flow diversion chamber 561. The contact end face is axially recessed towards the positioning pipe 4 to form a diversion groove 463. The diversion groove 463 communicates with the water injection port 461 and radially penetrates the water injection pipe 46. Through the above technical solution, during operation, after the water-vapor mixture ejected from the water injection port 461 impacts the inner wall of the first flow diversion chamber 561, the flow direction of the water-vapor mixture is restricted by the diversion channel formed by the inner wall of the first flow diversion groove and the inner wall of the diversion groove 463, so that the water-vapor mixture is reversely diverted to the diversion port 562 in the form of concentrated diversion. This enables the water-vapor mixture to maintain a certain speed and pressure during the reverse diversion process, reduces kinetic energy loss, improves the reverse diversion efficiency, maintains the uniformity of the water-vapor mixture, makes the mixing of the water-vapor mixture in the first flow diversion chamber 561 more sufficient and uniform, helps to form high-quality micro-nano bubble water. At the same time, due to the design of the diversion groove 463, the water injection port 461 can extend as deep as possible into the first flow diversion chamber 561, maximizing the distance between the water injection port 461 and the diversion port 562, and increasing the flow channel length of the reverse return diversion path of "water injection pipe 46 → first flow diversion chamber 561 → diversion port 562".

[0057] In the drawings of this embodiment, the cross-section of the diversion groove 463 is rectangular and radially and bidirectionally penetrates the water injection pipe 46, so that the diversion channel formed by the first flow diversion chamber 561 and the diversion groove 463 has two outlets. The water-vapor mixture ejected from the water injection port 461 is concentrated and divided into two streams and diverted to the diversion port 562 through this diversion channel. Of course, in practical applications, the shape of the diversion groove 463 can be specifically set according to product requirements, and the number of outlets of the above diversion channel can be set to more than two.

[0058] In addition, a flow guiding surface 565 is provided in the first flow diversion cavity 561. The flow guiding surface 565 is aligned with the water injection port 461 and connects to the inner wall of the first flow diversion cavity 561, so as to guide and buffer the water-gas mixture discharged from the water injection port 461. By providing the flow guiding surface 565, the flow guiding surface 565 is aligned with the water injection port 461 and serves as a transition area between the water-gas mixture and the inner wall of the first flow diversion cavity 561. During operation, the flow guiding surface 565 can guide the water-gas mixture ejected from the water injection port 461 to flow along a predetermined path, reduce the formation of turbulence and eddy currents, and at the same time absorb and disperse the energy when the water-gas mixture impacts, playing a buffering role, reducing the impact force and impact frequency of the water-gas mixture on the inner wall of the first flow diversion cavity 561, reducing wear and noise, thereby improving the reliability and service life of the water-gas mixing device. In addition, the presence of the flow guiding surface 565 enables the water-gas mixture to be more evenly distributed after entering the first flow diversion cavity 561, which helps the gas to dissolve more fully in the water.

[0059] Of course, the shape and formation method of the flow guiding surface 565 are diverse and can be a spherical surface, a flat surface or other shaped structures. This embodiment specifically provides an implementation structure of the flow guiding surface 565: a flow guiding block 566 for guiding the flow direction of the flow block 566 is provided on the inner wall of the first flow diversion cavity 561. One end of the flow guiding block 566 is aligned and pointed at the water injection port 461, and the side surface of the flow guiding block 566 gradually expands from its end aligned and pointed at the water injection port 461 and continuously extends to the inner wall of the first flow diversion cavity 561, and the above-mentioned flow guiding surface 565 is formed along this side surface. Through the above technical solution, the side surface of the flow guiding block 566 gradually expands and extends from its end aligned and pointed at the water injection port 461, not only having the technical effects of the above-mentioned flow guiding surface 565, but also the flow guiding block 566 can form a conical-like mechanical structure, having good anti-impact ability, and can utilize the diffusion principle in fluid mechanics, that is, when the high-velocity water-gas mixture impacts the gradually expanding side surface of the flow guiding block 566, its flow velocity will gradually decrease, converting kinetic energy into pressure energy, so as to be able to reduce the formation of turbulence and eddy currents. In addition, at the same time, the gradually expanding flow guiding surface 565 can also form a certain angle with the flow direction of the water-gas mixture, generating additional turbulence and shear force, further promoting the dispersion and dissolution of the gas in the water and forming finer micro-nano bubbles.

[0060] In addition to the above structure, in order to further enhance the water-gas mixing effect, a plurality of flow disturbing plates 554 are formed by the inner wall of one end of the second flow diversion cavity 551 communicating with the water outlet passage 51 extending inward. When the water-gas mixture after preliminary and intermediate mixing enters the second flow diversion cavity 551 through the confluence port 552, they will encounter the inwardly extending flow disturbing plates 554. These flow disturbing plates 554 will radially insert into the flow channel of the water-gas mixture and collide with the fluid, causing the water-gas mixture to generate eddy currents and turbulence, forming a complex flow field, enabling the gas to dissolve more evenly in the water and forming finer and more stable micro-nano bubbles in the water.

[0061] Embodiment 2

[0062] A water purification system includes a water inlet pipeline, a booster pump, an air pump, and a microbubble faucet. The output end of the water inlet pipeline is connected to the input end of the booster pump and the output end of the air pump simultaneously. It further includes the water circuit board in Embodiment 1. The output end of the booster pump is communicated with the mixing port 2, and the input end of the microbubble faucet is connected to the output end of the bubble generating assembly. Since the bubble generating assembly of this water purification system is integrally connected to the water circuit board, the bubble generating assembly obtains good support rigidity. The bubble generating assembly will not shake or sway due to the water pressure impact at the moment of water connection, and can avoid collision with other components such as the booster pump. The overall stability is strong. In addition, since the water circuit board is internally provided with a mixing passage 3 for connecting the booster pump and the bubble generating assembly, it helps to simplify the assembly process of the water purifier, reduce the number of external water pipes of the water purification system, thereby enhancing the structural compactness and improving the utilization rate of the external installation space of the water purification system.

[0063] Embodiment 3

[0064] A water purifier includes the water purification system as in Embodiment 2.

[0065] Note that the above is only the preferred embodiment of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A gas mixing component, characterized in that: The gas mixing component has a main cavity (54), a water inlet passage (41) and a water outlet passage (51); Inside the main cavity (54), at least two sets of flow turning cavities are formed along a preset direction, namely a first flow turning cavity (561) communicating with the water inlet passage (41) and a second flow turning cavity (551) communicating with the water outlet passage (51); A plurality of shunt ports (562) communicating with the main cavity (54) are provided on the side wall of the first flow turning cavity (561); A plurality of confluence ports (552) communicating with the main cavity (54) are provided on the side wall of the second flow turning cavity (551).

2. The gas mixing component according to claim 1, wherein: It includes: A gas mixing pipe (5) which forms a main cavity (54), a sealing port (52) communicating with the main cavity (54) and a water outlet passage (51); A positioning pipe (4) which is detachably and sealingly connected to the sealing port (52) and forms a water inlet passage (41); A fixing pipe (55) which is connected inside the main cavity (54) and forms a second flow turning cavity (551); A movable cylinder (56) which is positioned inside the main cavity (54) and is detachably connected to the fixing pipe (55) and forms a first flow turning cavity (561).

3. The gas mixing component according to claim 2, wherein: One end of the movable cylinder (56) is provided with a plugging portion (563) adapted to be plugged and connected to the fixing pipe (55), and the other end thereof is provided with an opening (564) communicating with the first flow turning cavity (561). One end of the positioning pipe (4) is provided with a water injection pipe (46) communicating with the water inlet passage (41). The water injection pipe (46) forms a water injection port (461). The water injection port (461) passes through the opening (564) and extends into the first flow turning cavity (561). A plurality of water blocking plates (462) are formed at the root of the water injection pipe (46). The water blocking plates (462) abut against the opening (564) to form a plurality of shunt ports (562).

4. The gas mixing component according to claim 3, characterized in that: The water injection port (461) has a contact end face that can abut against the inner wall of the first flow turning cavity (561). The contact end face is axially recessed to form a diversion groove (463). The diversion groove (463) communicates with the water injection port (461) and radially penetrates the water injection pipe (46). The fluid output from the water injection port (461) is guided by the diversion groove (463) and is divided and flows into the first flow turning cavity (561).

5. The gas mixing component according to claim 3, characterized in that: There is a diversion surface (565) in the first flow turning cavity (561) that is aligned with the water injection port (461). The diversion surface (565) is connected to the inner wall of the first flow turning cavity (561) for guiding and buffering the fluid discharged from the water injection port (461).

6. The gas mixing assembly according to claim 5, characterized in that: A diversion block for guiding the flow direction of the fluid (566) is provided on the inner wall of the first flow turning cavity (561). One end of the diversion block points towards the water injection port (461) in alignment. And the side surface of the diversion block gradually expands from the end where the diversion block points towards the water injection port (461) and continuously extends to the inner wall of the first flow turning cavity (561). The diversion surface (565) is formed on the side surface of the diversion block.

7. The gas mixing component according to claim 2, wherein: A plurality of flow disturbing plates (554) are provided on the inner wall of one end of the second flow turning cavity (551) that communicates with the water outlet passage (51).

8. The gas mixing component according to claim 2, characterized in that: The outer wall of the positioning tube (4) is detachably and sealingly inserted into the sealing port (52).

9. The gas mixing component according to claim 7, wherein: An annular groove group (42) is axially arranged on the outer wall of the positioning tube (4), and a sealing ring (43) for elastically abutting against the inner wall of the sealing port (52) is installed in the annular groove group (42).

10. The gas mixing component according to claim 7, characterized in that: A connecting plate (53) extends outward from the outer wall of the mixing tube (5), and the connecting plate (53) is detachably connected to the positioning tube (4) through a threaded fastener.

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