Ducted micro-nano bubble water generator

Abstract

The device comprises a motor, a pump shell, an air wheel, a bubble rotary filter shearing device and a duct shearing wheel. The motor is connected with the bubble rotary filtration shearer through a coupling; the shearer consists of an air wheel, a hollow shaft and a rotary filtration cavity; the motor drives the air wheel and the hollow shaft to rotate at a high speed to generate pressure air which is conveyed to the rotary filter cavity through the hollow shaft; and the outer surface of the rotary filter cavity utilizes the tension of water to shear bubbles into tiny bubbles, and the tiny bubbles are released into a flow guide ring at a water inlet of the pump. The bubble rotary filtration shearer is of a cylindrical cavity structure with an opening in one end, and the cavity is made of porous ceramic, metal or high polymer materials; the duct shearing wheel is composed of a disc, a plurality of streamline special-shaped ducts and a flow guide ring, a plurality of grinding teeth are arranged on the inner walls of the ducts, and the flow guide ring is welded to the outer walls of the ducts and is in clearance fit with the water inlet of the pump shell. Air is pressurized and supplied through the air wheel, the air is preliminarily sheared into micro-bubbles through the rotary filter shearer, and the micro-bubbles are collided, sheared and pressurized for multiple times in the duct, so that the bubbles reach the micro-nano level and are efficiently dissolved in water, and the concentration and flow of bubble water are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment and bubble generation, in particular to a culvert type micro-nano bubble water generator. BACKGROUND

[0002] Micro-nano bubbles have a wide range of applications in black and odorous water treatment, air flotation separation, disinfection and sterilization, and aquaculture oxygenation due to their small particle size, large specific surface area, and long residence time. Micro-nano bubbles can significantly increase the dissolved oxygen content of water, promote the decomposition of organic pollutants by microorganisms, and help kill algae and pathogenic bacteria, thereby improving water transparency.

[0003] Current common micro-nano bubble generation technologies mainly include static generator method and high-speed shearing method. The static generator produces a limited number of bubbles, has low processing efficiency, and is difficult to meet the needs of large-area water treatment. The traditional high-speed shearing method usually relies on high-speed rotating dynamic and static disc mechanical shearing of large bubbles, which has problems such as insufficient bubble breaking, low gas dissolution efficiency, and wide bubble size distribution. In addition, existing devices mostly use air blower or impeller negative pressure air suction to supply air, which has poor gas-liquid mixing effect, easily forms large bubbles, affects the pump head and water flow, and restricts the treatment effect and engineering application.

[0004] Therefore, there is an urgent need to develop a generation device that can stably produce high-concentration micro-nano bubbles while maintaining a high water flow output, to improve the efficiency and applicability of sewage treatment. SUMMARY

[0005] The present application aims to solve the problems of large bubble size, low gas dissolution efficiency, and limited water quantity in existing micro-nano bubble generation devices, and provides a culvert type micro-nano bubble water generator that can efficiently and massively produce micro-nano bubble water through multi-stage shearing and culvert constraint breaking mechanism.

[0006] The technical solution of the present application is as follows:

[0007] A culvert type micro-nano bubble water generator includes a motor, a pump housing, a gas wheel, a bubble spin filter shearing device, and a culvert shearing wheel. The motor is connected to the gas wheel through a shaft coupling. The bubble spin filter shearing device includes a hollow shaft and a spin filter cavity. One end of the hollow shaft is connected to the gas wheel, and the other end is in communication with the spin filter cavity. The spin filter cavity is a cylindrical porous cavity with an open end. The culvert shearing wheel is arranged at the water inlet of the pump housing and includes a disc, a plurality of streamline-shaped culverts, and a flow guide ring. The culverts are fixed to the disc, the flow guide ring is connected to the outer wall of the culverts, and the outer wall of the flow guide ring is in gap cooperation with the inner wall of the water inlet of the pump housing.

[0008] Furthermore, the impeller is a centrifugal impeller structure with its blades positioned between two discs. One disc has a central hole for connection to a hollow shaft, while the other disc is coaxially connected to a coupling.

[0009] Furthermore, the cyclone filter chamber is made of porous ceramic, porous metal or porous polymer material.

[0010] Furthermore, the guide ring is a cylindrical ring structure with inclined guide vanes on its inner side, and multiple toothed protrusions on the inner side of the ring and the water-facing surface of the guide vanes.

[0011] Furthermore, the disc in the culvert shear wheel can adopt a conical disc structure to create a height difference between the inlet and outlet of the irregular culvert, thereby reducing water flow resistance.

[0012] Furthermore, the inner surface of the irregularly shaped duct is provided with multiple grinding or cutting teeth to enhance the breaking effect on bubbles.

[0013] Furthermore, the irregularly shaped duct has at least two diameter-changing sections in the middle, which improves the bubble breaking efficiency by changing the flow rate and pressure.

[0014] The present invention has the following beneficial effects:

[0015] 1. The gas supply method using a pneumatic turbine booster provides a stable gas source, overcoming the problem of uneven gas mixing caused by negative pressure intake;

[0016] 2. Microbubbles are initially formed by bubble vortex shearing, and secondary crushing is achieved by combining the toothed and convex structure inside the flow guide ring to improve bubble dispersion;

[0017] 3. By utilizing the ducted shear wheel and its internal irregular duct structure, multiple shearing, collision, and pressurization of bubbles under constrained conditions are carried out, which significantly reduces the bubble size and increases the dissolved gas efficiency.

[0018] 4. The ducted design avoids the water flow stagnation phenomenon commonly found in traditional impellers, ensuring high flow output while maintaining stable pump head, making it suitable for large-scale water treatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the ducted shear wheel structure;

[0021] Figure 3 This is a schematic diagram of the gas turbine structure;

[0022] Figure 4 This is a schematic diagram of a bubble vortex filter shear.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1: Pump housing; 1-1: Inlet; 1-2: Outlet;

[0025] 2: Ducted shear wheel; 2-1: Streamlined irregular duct; 2-2: Toothed protrusion; 2-3: Disc (conical disc);

[0026] 3: Pneumatic turbine; 3-1: Air intake; 3-2: Air exhaust; 3-3: Pneumatic turbine blades;

[0027] 4: Bubble vortex filter shear;

[0028] 5: Coupling;

[0029] 6: Hollow shaft;

[0030] 7: Flow guide ring;

[0031] 8: Motor. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 As shown, a ducted micro / nano bubble water generator includes a motor 8, a pump housing 1, a pneumatic turbine 3, a bubble vortex shear 4, and a ducted shear wheel 2. The motor 8 drives the pneumatic turbine 3 to rotate via a coupling 5, and the pressurized air generated by the pneumatic turbine 3 is delivered to the bubble vortex shear 4 via a hollow shaft 6. At high speed, the vortex chamber utilizes the surface tension of water to shear large bubbles into tiny bubbles, which are then released into the guide ring 7 region.

[0034] The inner side of the guide ring 7 is equipped with an inclined guide plate and a toothed protrusion structure, which can initially break up air bubbles and guide water flow to form a vortex, avoid eddies, and improve air and water intake efficiency.

[0035] The bubble water then enters the irregularly shaped duct 2-1 of the duct shear wheel 2. The inner surface of the duct is equipped with grinding teeth 2-2, and the flow rate is varied through a variable diameter design. This causes the bubbles to undergo multiple shearing, collisions, and pressure changes within the duct, further breaking them down into micro- and nano-sized particles, allowing them to dissolve efficiently in the water.

[0036] This invention significantly improves the generation efficiency and concentration of micro- and nano-bubbles through the synergistic effect of multi-stage shearing and duct fragmentation, while ensuring high water flow output, making it suitable for various wastewater treatment scenarios.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although detailed descriptions have been provided with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementations of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A ducted micro / nano bubble water generator, characterized in that, include: Motor, pump housing, turbine, bubble cyclone filter shear, and duct shear wheel; The motor is connected to the gas turbine via a coupling; The bubble rotary filter shear includes a hollow shaft and a rotary filter chamber. One end of the hollow shaft is connected to the air impeller, and the other end is connected to the rotary filter chamber. The vortex filter chamber is a cylindrical cavity structure with one end open, and its peripheral wall is a porous structure. The duct shear wheel is located at the inlet of the pump housing and includes a disc, several streamlined irregular ducts, and a guide ring. The irregular ducts are located on the disc, and the guide rings are connected to the outer wall of the irregular ducts. The outer peripheral wall of the guide rings is clearance-fitted with the inner wall of the inlet of the pump housing.

2. The ducted micro / nano bubble water generator according to claim 1, characterized in that: One end of the coupling is connected to the output shaft of the motor, and the other end is connected to the air impeller. The air impeller and the hollow shaft together form an air intake channel.

3. The ducted micro / nano bubble water generator according to claim 1, characterized in that: The peripheral wall material of the cyclone filter chamber is one of porous ceramic, porous metal or porous polymer material.

4. The ducted micro / nano bubble water generator according to claim 1, characterized in that: The disk in the duct shear wheel is a flat disk or a conical disk.

5. The ducted micro / nano bubble water generator according to claim 4, characterized in that: The irregularly shaped culvert has at least two diameter-changing sections between its inlet and outlet.

6. The ducted micro / nano bubble water generator according to claim 4, characterized in that: One side of the conical disk is a flat surface, and the other side is a conical inclined surface.

7. The ducted micro / nano bubble water generator according to claim 4, characterized in that: The irregularly shaped duct is welded to the disk or integrally formed, and the inner surface of the irregularly shaped duct is provided with a number of grinding teeth or cutting teeth.

8. The ducted micro / nano bubble water generator according to claim 1, characterized in that: The inner circumference of the guide ring is uniformly provided with multiple angled guide blades along the circumferential direction.

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