CN211368091U - Micro-bubble nozzle and washing equipment with the same - Google Patents

Abstract

The utility model relates to a microbubble shower nozzle and washing equipment that has this microbubble shower nozzle. The micro-bubble spray head comprises a water inlet pipe component and a water outlet pipe component, wherein the interior of the water inlet pipe component is provided with a throttling hole; the outlet pipe part has an air mixing end and a microbubble generation end including a bubbler, the air mixing end is provided with a second joint part, in an assembled state of the inlet pipe part and the outlet pipe part, the first joint part and the second joint part are jointed with each other and form an axial gap therebetween, the axial gap and a radial passage arranged on or near the air mixing end are communicated with each other to form an inlet passage, an outlet of the inlet passage is close to the orifice so that when water flows through the orifice, negative pressure is formed near the outlet of the inlet passage to suck air into the outlet pipe part to be mixed with the water to generate bubble water, and the bubble water forms microbubble water when flowing through the bubbler.

Description

Micro-bubble nozzle and washing equipment with the same

technical field

The utility model relates to a micro-bubble generating device, in particular to a micro-bubble spray head and a washing device having the micro-bubble spray head.

Background technique

Micro-bubble usually refers to tiny bubbles with a diameter of less than fifty micrometers (μm) when the bubbles occur. Microbubbles may also be referred to as micro-/nano-bubbles, microbubbles or nano-bubbles, depending on their diameter range. Because of their low buoyancy in the liquid, microbubbles stay in the liquid for a long time. Furthermore, the microbubbles shrink in the liquid until they finally break up, creating smaller nanobubbles. When the microbubbles are broken, high-pressure and high-temperature heat is locally generated, thereby destroying foreign objects such as organic matter floating in the liquid or adhering to objects. In addition, microbubbles are negatively charged and tend to adsorb positively charged foreign matter floating in the liquid. Therefore, the foreign matter is adsorbed by the microbubbles after it is destroyed due to the crushing of the microbubbles, and then slowly floats to the surface of the liquid. These properties make the microbubbles extremely powerful for cleaning and purifying. At present, microbubbles have been widely used in washing machines such as washing machines.

To manufacture microbubbles, microbubble generating devices with different structures have been developed. For example, Chinese invention patent application (CN107321204A) discloses a micro-bubble generator. The micro-bubble generator comprises a shell with open ends at both ends, a water inlet pipe is connected to the first end of the shell, and a vortex column, a vortex column shell, a gas-liquid mixing tube and a vortex column, a vortex column shell, a gas-liquid mixing tube, and a A mesh of holes at the second end. The gas-liquid mixing pipe is sequentially formed with a communicating accommodating cavity, an air flow part, an acceleration part and a circulation part from the head to the tail. The volute shell and the volute located in it are positioned in the accommodating cavity; the air inlet is provided on the pipe wall of the air flow part; the inner wall of the air flow part protrudes toward the direction of the accommodating cavity, forming a funnel-shaped convex part , a gap is formed between the large mouth end of the funnel-shaped protruding part and the conical volute shell for the air entering from the air inlet to flow into the airflow part; the inner diameter of the acceleration part gradually increases toward the tail. The water flow flows through the vortex column to form a high-speed rotating water flow inside the vortex column shell. The inlet is sucked in and mixed with the water flow, and then enters the acceleration part. Due to the tapered surface of the volute shell and the inner diameter of the acceleration part gradually increasing toward the tail direction, a pressure difference is formed, so that the water flow mixed with a large amount of air (forming bubble water) accelerates the flow, and the bubbles flow. The water flows to the mesh through the circulation part, and the sparkling water is cut and mixed by the pores in the mesh to form micro-bubble water containing a large number of micro-bubbles.

Chinese invention patent application (CN107583480A) also discloses a micro-bubble generator. The micro-bubble generator comprises a shell with two open ends, the first end of the shell is connected with a water inlet pipe, and a booster pipe, a bubble generating pipe and a hole positioned at the second end of the shell are sequentially arranged in the shell along the water flow direction. network. From the first end to the second end, the bubble generating tube is sequentially formed with an accommodating cavity, a gas-liquid mixing part, and an expansion guide part. A booster tube is received in the accommodating cavity, and the booster tube has a tapered end facing the accommodating cavity; in the gas-liquid mixing portion, a tapered gas-liquid whose size gradually decreases along the direction from the first end to the second end is formed A mixing space; an expansion guide space whose size increases along the direction from the first end to the second end is formed in the expansion guide portion. An air inlet channel is arranged on the tube wall of the bubble generating tube, a gap is formed between the inner wall of the gas-liquid mixing part and the outer wall of the booster tube so as to communicate with the intake channel on the outer wall of the bubble generating tube, and the water outlet of the booster tube is placed. in the water inlet of the gas-liquid mixing part. The water flow is pressurized through the booster tube to form a high-speed water flow. The high-speed water flow flows out from the water outlet of the booster tube and then enters the gas-liquid mixing chamber and forms a negative pressure in the gas-liquid mixing chamber, which sucks a large amount of air through the intake passage. In the water flow, air and water are mixed to form sparkling water, the sparkling water flows from the expansion guide to the mesh, and the sparkling water is mixed and cut by the pores of the mesh to form micro-bubble water.

Both of the above-mentioned microbubble generators have at least five separate components: a casing, a water inlet pipe, a vortex column and a volute or a booster pipe, a gas-liquid mixing pipe or a bubble generating pipe, and an orifice mesh. These components all need to be designed with specific mating or connection structures so that all components can be assembled together and the assembled microbubble generator can work reliably. In addition, in order to allow air to be sucked into the micro-bubble generator from the outside, an air channel needs to be provided on the outer casing and the gas-liquid mixing pipe or the bubble generating pipe. Therefore, the structure of such a microbubble generator is complicated, and the manufacturing cost is also high.

Accordingly, a new technical solution is needed in the art to solve the above problems.

Utility model content

In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problems of complex structure and high manufacturing cost of the existing micro-bubble generator, the utility model provides a micro-bubble spray head, the micro-bubble spray head comprises: a water inlet pipe part , the water inlet pipe part has a water inlet end allowing water to flow in and a throttle end, the throttle end is provided with a first joint; a throttle hole, the throttle hole is arranged in the water inlet pipe along the water flow direction In the component; the water outlet pipe part, the water outlet pipe part has an air mixing end and a micro-bubble generating end, the air mixing end is provided with a second joint part, in the assembled state of the water inlet pipe part and the water outlet pipe part, The first engaging portion and the second engaging portion are engaged with each other, and an axial gap is formed between the first engaging portion and the second engaging portion, and the axial gap is different from that provided on the air mixing end or Nearby radial passages communicate with each other to form intake passages, the outlet of which is close to the orifice so that when water flows through the orifice, a negative pressure is formed near the outlet of the intake passage and Therefore, the outside air is sucked into the water outlet pipe part to be mixed with water to generate bubble water; the bubbler is fixed on the micro-bubble generating end of the water outlet pipe part and is arranged to be able to flow in the bubble water Micro-bubble water is formed over time.

In a preferred technical solution of the above micro-bubble spray head, the micro-bubble spray head includes a radial throttle portion formed in the throttle end, and the throttle hole is formed on the radial throttle portion.

In the preferred technical solution of the above micro-bubble nozzle, the micro-bubble nozzle includes a throttle plate, the throttle end is provided with an annular rib extending radially inward, and the throttle plate abuts toward the water outlet pipe part On the annular rib, and the throttle hole is formed on the throttle plate.

In the preferred technical solution of the above-mentioned microbubble spray head, the radial passage is a radial gap formed between the abutting surfaces of the throttle end and the air mixing end or is directly formed at the air mixing end radial holes on the .

In the preferred technical solution of the above micro-bubble spray head, the first engaging portion is an internal thread hole wall provided in the throttle end, and the second engaging portion is an external thread provided on the air mixing end or, the first engaging portion is an externally threaded cylindrical surface provided on the throttle end, and the second engaging portion is an internally threaded hole wall provided in the air mixing end; the shaft A downward clearance is formed between the inner thread hole wall and the outer thread cylinder surface.

In the preferred technical solution of the above micro-bubble spray head, the first joint part is a smooth hole wall arranged in the throttle end, and the second joint part is a non-smooth column arranged on the air mixing end The non-smooth cylindrical surface is provided with a plurality of ridges or grooves, and the axial gap is formed between the smooth hole wall and the non-smooth cylindrical surface.

In the preferred technical solution of the above micro-bubble nozzle, the first joint is a non-smooth hole wall disposed in the throttle end, and the non-smooth hole wall is provided with a plurality of ridges or grooves, so The second joint portion is a smooth cylindrical surface disposed at the air mixing end, and the axial gap is formed between the non-smooth hole wall and the smooth cylindrical surface.

In the preferred technical solution of the above micro-bubble nozzle, the first joint is a non-smooth hole wall disposed in the throttle end, and the non-smooth hole wall is provided with a plurality of ridges and/or grooves , the second joint is a non-smooth cylindrical surface provided on the air mixing end, the non-smooth cylindrical surface is provided with a plurality of ridges and/or grooves, and the axial gap is formed on the between the non-smooth hole wall and the non-smooth cylindrical surface.

In the preferred technical solution of the above-mentioned micro-bubble nozzle, the starter has a mesh structure, and the mesh structure includes a plastic fence, a metal mesh, or a polymer material mesh.

Those skilled in the art can understand that, in the technical solution of the present invention, the micro-bubble nozzle includes a water inlet pipe part with a throttle hole inside and a water outlet pipe part with a bubbler at the water outlet end, and the inlet pipe part is provided with a bubbler. The air channel is composed of an axial gap and a radial channel that communicate with each other: the axial gap is formed between the first joint part of the throttle end of the water inlet pipe part and the second joint part of the air mixing end of the water outlet pipe part between; the radial channel is formed on or near the air mixing end. The water flows into the water inlet pipe part from the water inlet end of the water inlet pipe part; then the water flow is depressurized and expanded through the orifice; the expanded water flow is sprayed into the water outlet pipe part, and a negative pressure is generated in the air mixing end, and the negative pressure Under the action, a large amount of air is sucked into the air mixing end from the outside through the axial gap and radial gap and mixed with water to produce bubble water containing a large number of bubbles; the bubble water finally flows through the micro-bubble generating end of the water outlet pipe part. The bubbler produces microbubble water containing a large number of microbubbles. In the technical solution of the present invention, only the throttling end of the water inlet pipe part and the air mixing end of the water outlet pipe part are combined to form the micro-bubble nozzle, so the micro-bubble nozzle can be regarded as a two-part micro-bubble nozzle. Bubble sprinkler. Further, the air inlet channel is combined between the joint parts of the water inlet pipe part and the water outlet pipe part, so there is no need to separately set the air inlet channel in other parts of the micro-bubble spray head. Compared with the prior art, the micro-bubble nozzle of the present invention not only has good performance of generating micro-bubbles, but also its components and structure are greatly simplified, and its manufacturing cost is also significantly reduced.

Preferably, the first joint part of the throttle end of the water inlet pipe part is an internally threaded hole wall, and the second joint part of the air mixing end of the water outlet pipe part is an external threaded cylindrical surface engaged with the internal threaded hole wall, or a joint The first engaging portion of the flow end is an externally threaded cylindrical surface, and the second engaging portion of the air mixing end is an internally threaded hole wall that engages the externally threaded cylindrical surface. In this way, the axial clearance is formed by the clearance reserved between the engaged threads, which constitutes a part of the intake passage. Alternatively, the first engagement portion is a smooth hole wall, and the second engagement portion is a non-smooth cylindrical surface matched with the smooth hole wall on which a plurality of ridges or grooves are provided; or, the first engagement portion The part is a non-smooth hole wall on which a plurality of ridges or grooves are arranged, and the second joint part is a smooth cylindrical surface matched with the non-smooth hole wall; or, the first joint part is provided with a A non-smooth hole wall of a plurality of ridges or grooves, and the second joint part is a non-smooth cylindrical surface on which a plurality of ridges or grooves are arranged matching the smooth hole wall. All of these matching engaging structures can achieve the purpose of forming an axial gap between the first engaging portion and the second engaging portion.

The present invention also provides a washing device, the washing device includes any one of the micro-bubble nozzles described above, and the micro-bubble nozzles are arranged to generate micro-bubble water in the washing device. The micro-bubble nozzle generates micro-bubble water containing a large number of micro-bubbles in the washing equipment, so it can not only improve the cleaning ability of the washing equipment, but also reduce the amount of detergent and the residual amount of detergent in clothes, for example.

Description of drawings

The preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

1 is a schematic structural diagram of an embodiment of a washing device with a micro-bubble nozzle according to the present invention;

2 is a schematic perspective view of an embodiment of the micro-bubble nozzle of the present invention;

3 is a front view of an embodiment of the micro-bubble nozzle of the present invention shown in FIG. 2;

4 is a top view of an embodiment of the micro-bubble nozzle of the present invention shown in FIG. 2;

5 is a cross-sectional view of the first embodiment of the micro-bubble nozzle of the present invention taken along the section line E-E of FIG. 4;

6 is a cross-sectional view of the second embodiment of the micro-bubble nozzle of the present invention taken along the section line E-E of FIG. 4;

FIG. 7 is a cross-sectional view of the third embodiment of the micro-bubble spray head of the present invention taken along the section line E-E of FIG. 4 .

List of reference numbers:

11. Box body; 12. Disc seat; 13. Top cover; 14. Foot; 21. Outer barrel; 31. Inner barrel; Balance ring; 41, drain valve; 42, drain pipe; 51, water inlet valve; 52, micro-bubble nozzle; 521, water inlet pipe part; 522, water outlet pipe part; 523, bubbler; 524A, first fixed installation part 524B, the second fixed mounting part; 525, the throttle hole; 526, the axial clearance; 527, the radial clearance; 528, the throttle; 212, the water inlet end; 213, the throttle end; 221, the second joint; 222, the microbubble generating end; 223, the air mixing end; 281, the insertion part.

Detailed ways

The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms “upper”, “lower”, “left”, “right”, “inner”, “outer” and other terms indicated in the direction or the positional relationship are based on the accompanying drawings The direction or positional relationship shown is only for convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installation", "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, or It may be a detachable connection or an integral connection; it may be a direct connection, an indirect connection through an intermediate medium, or an internal connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In order to solve the problems of complex structure and high manufacturing cost of the existing micro-bubble generator, the utility model provides a micro-bubble spray head, which includes a water inlet pipe part and a water outlet pipe part. The water inlet pipe member has a water inlet end allowing water to flow in and a throttle end, and the throttle end is provided with a first joint portion. Orifices arranged along the water flow direction are also arranged in the water inlet pipe part. The water outlet pipe part has an air mixing end and a microbubble generating end, the air mixing end is provided with a second joint, and a bubbler is fixed at the microbubble generating end. In a state where the water inlet pipe part and the water outlet pipe part are assembled, the first joint part and the second joint part are engaged with each other, and an axial gap is formed between the first joint part and the second joint part. The axial gap and the radial passage provided on or near the air mixing end communicate with each other to form an intake passage. The outlet of the intake passage is close to the orifice so that when water flows through the orifice, a negative pressure is formed near the outlet of the intake passage and thus draws outside air into the water outlet pipe part to mix the air and water to produce sparkling water. The bubbler is configured to form microbubble water as it flows through. Part of the intake passage is directly formed between the first joint part of the throttle end and the second joint part of the air mixing end, and a micro-channel can be formed by combining the throttle end of the water inlet pipe part with the air mixing end of the water outlet pipe part. Bubble sprinkler. Therefore, compared with the micro-bubble generator of the prior art, the number of components and the structure of the micro-bubble nozzle of the present invention are greatly simplified, and the manufacturing cost of the micro-bubble nozzle is also greatly reduced, while the micro-bubble nozzle still maintains good production. performance of microbubbles.

The micro-bubble nozzle of the utility model can be applied in the field of washing, the field of sterilization, or other fields requiring micro-bubble. For example, the micro-bubble spray head of the present invention can be applied not only to washing equipment, but also to devices such as bathroom faucets or showers.

Therefore, the present invention also provides a washing device comprising the micro-bubble nozzle of the present invention. The microbubble spray head is configured to generate microbubble water within the washing device. The micro-bubble water containing a large number of micro-bubbles is generated in the washing equipment by the micro-bubble nozzle, which can not only improve the washing ability of the washing equipment, but also reduce the amount of detergent and the residual amount of detergent in clothes, which is beneficial to user's health.

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of an embodiment of a washing device with a micro-bubble nozzle according to the present invention. In this embodiment, the washing device is a pulsator washing machine. Alternatively, in other embodiments, the washing device may be a drum washing machine or an all-in-one dryer or the like.

As shown in FIG. 1 , a pulsator washing machine (hereinafter referred to as a washing machine) includes a box body 11 , a disk base 12 is disposed on the upper part of the box body 11 , and an upper cover 13 is pivotally connected to the disk base 12 . Inside the case 11, an outer tub 21 serving as a tub is provided. An inner barrel 31 is arranged in the outer barrel 21 , a pulsator 32 is arranged at the bottom of the inner barrel 31 , a motor 34 is fixed at the lower part of the outer barrel 21 , and the motor 34 is drivingly connected with the pulsator 32 through a transmission shaft 33 , and is close to the side wall of the inner barrel 31 . The top end is provided with a dehydration hole 311 . The drain valve 41 is provided on the drain pipe 42 , and the upstream end of the drain pipe 42 communicates with the bottom of the outer tub 21 . The washing machine further includes a water inlet valve 51 and a micro-bubble spray head 52 communicated with the water inlet valve 51 , and the micro-bubble spray head 52 is installed on the top of the outer tub 21 . The water enters the microbubble nozzle 52 through the water inlet valve 51 to generate microbubble water containing a large number of microbubbles, and the microbubble nozzle 52 sprays the water containing a large number of microbubbles into the detergent box to mix with the detergent, and then passes through the detergent box. Enter the inner tub 31 to wash clothes. The micro-bubbles impact on the detergent during the crushing process, and the negative charges carried by the micro-bubbles can also adsorb the detergent, so the micro-bubbles can increase the mixing degree of the detergent and the water, thereby reducing the amount of detergent and reducing the amount of detergent in the detergent. residue on clothing. In addition, the micro-bubbles in the inner tub 31 will also hit the stains on the clothes, and will attract the foreign objects that generate the stains. Therefore, the micro-bubbles also enhance the stain removal performance of the washing machine. Optionally, the microbubble spray head can also directly spray the microbubble water carrying a large number of microbubbles into the outer tub 21 or the inner tub 31 of the washing machine to further reduce the amount of detergent and enhance the cleaning ability of the washing machine.

Referring to Fig. 2-Fig. 4, Fig. 2 is a perspective view of an embodiment of the micro-bubble nozzle of the present utility model, Fig. 3 is a front view of an embodiment of the micro-bubble nozzle of the present utility model shown in Fig. 2, and Fig. 4 is a top view of an embodiment of the micro-bubble nozzle of the present invention shown in FIG. 2 . As shown in FIGS. 2-4 , as an embodiment, the micro-bubble nozzle 52 of the present invention includes a water inlet pipe part 521 and a water outlet pipe part 522 . A bubbler 523 is installed at one end of the water outlet pipe part 522, and the bubbler 523 is arranged to be able to mix and cut the sparkling water to form micro-bubble water when the sparkling water flows therethrough.

Optionally, the bubbler 523 is a mesh structure, and the mesh structure has at least one fine hole with a diameter of micron level, preferably, the diameter of the fine hole is between 0 and 1000 microns; The diameter is between 5 and 500 microns. The mesh structure of the bubbler 523 can be a plastic fence, a metal mesh, a polymer mesh, or other suitable mesh structures. A plastic fence usually refers to a polymer fence, which is integrally injection-molded by a polymer material, or a polymer material is first made into a plate, and then a microporous structure is formed on the plate by machining to form a plastic fence. The polymer material mesh usually refers to a mesh with a microporous structure made by first making a polymer material into a wire, and then weaving this wire. The polymer material mesh can include nylon mesh, cotton mesh, polyester mesh, polypropylene mesh, and the like. Alternatively, the bubbler 523 may be other mesh structure capable of generating micro-bubbles, such as a mesh structure composed of two non-micron-scale honeycomb structures.

Optionally, a first fixed installation portion 524A and a second fixed installation portion 524B are provided on the water inlet pipe member 521 .

3 and 4 , the first fixed mounting portion 524A and the second fixed mounting portion 524B are symmetrically positioned on both sides of the outer wall of the water inlet pipe member 521, and are located in the middle of the micro-bubble spray head 52 for attaching the micro-bubble spray head 52. fixed to the intended installation location. Optionally, the first and second fixed installation parts 524A and 524B may be provided on the water outlet pipe part 522 , or only one fixed installation part is provided on the micro-bubble spray head 52 .

As shown in FIG. 4 , in one embodiment, the first and second fixed mounting parts 524A and 524B are screw hole structures. However, the fixed mounting portion may adopt any suitable connection structure, such as a snap connection structure, a welded connection structure, and the like.

Referring to FIG. 5 , FIG. 5 is a cross-sectional view of the first embodiment of the micro-bubble spray head of the present invention taken along the section line E-E of FIG. 4 . As shown in FIG. 5 , the microbubble spray head 52 includes a water inlet pipe part 521 and a water outlet pipe part 522 .

As shown in FIG. 5 , the water inlet pipe member 521 has a water inlet end 212 that allows water to flow in and a throttle end 213 that allows water to flow out from the water inlet pipe member 521 . Inside the water inlet pipe member 521 is a radial throttle portion 528 extending inward from the inner wall thereof, and throttle holes 525 arranged along the water flow direction C are formed on the radial throttle portion 528 . A first engagement portion 211 located downstream of the orifice 525 is formed in the throttle end 213, and the first engagement portion 211 takes the form of an internally threaded hole wall. Continuing to refer to FIG. 5 , the water outlet pipe member 522 has an air mixing end 223 and a microbubble generating end 222 . The air mixing end 223 is located upstream of the microbubble generating end 222 along the water flow direction. A second engaging portion 221 is provided on the air mixing end 223 , and the second engaging portion 221 is a cylindrical surface of an external thread, so that the external thread can engage with the internal thread of the first engaging portion 211 . A bubbler 523 capable of generating microbubbles is fixed at the microbubble generating end 222 . The bubbler 523 can be any mesh structure capable of generating microbubbles, as indicated in the above-described embodiments.

As shown in FIG. 5 , when the water inlet pipe part 521 and the water outlet pipe part 522 are assembled, the inner thread of the first engaging part 211 and the outer thread of the second engaging part 221 are engaged with each other, and the end surface of the air mixing end 223 abuts against each other. against the radial abutment surface formed in the throttle end 213 . The radial abutment surface is flush with the side surface of the radial throttle portion 528 facing the water outlet pipe part 522 . An axial gap 526 is formed between the internal thread and the external thread and a radial gap 527 is formed between the end face of the air mixing end 223 and the abutment face of the throttle end 213 . The axial gap 526 and the radial gap 527 communicate with each other to form an intake passage, the outlet of which is close to the orifice 525 . After the water enters the water inlet pipe part 521, it flows through the orifice 525. Under the action of the orifice 525, the water is depressurized and expanded, and thus is sprayed into the water outlet pipe part 522 at a high speed, thereby forming a negative pressure near the outlet of the air intake passage; Under the action of negative pressure, the outside air is sucked into the water outlet pipe part 522 through the axial gap 526 and the radial gap 527 and mixed with water to generate bubble water. The sparkling water then flows through bubbler 523 and is cut and mixed by bubbler 523 to produce micro bubble water.

Optionally, the first engaging portion 211 of the throttle end 213 is set as an externally threaded cylindrical surface, and the second engaging portion 221 of the air mixing end 223 is set as an internally threaded hole wall (not shown in the figure) matching the externally threaded cylindrical surface. out). An abutment surface is formed in the air mixing end 223 . In a state where the water inlet pipe part 521 and the water outlet pipe part 522 are assembled, the external thread of the first joint part 211 of the throttle end 213 engages the internal thread of the second joint part of the air mixing end 223, and the end face of the throttle end 213 Abut against the abutment surface in the air mixing end 223 . An axial gap is formed between the meshing male and female threads, and a radial gap is formed between the abutting end surfaces and the abutting surfaces.

Optionally, the first joint portion 211 is a smooth hole wall disposed in the throttle end 213 , and the second joint portion 221 is a non-smooth cylindrical surface disposed on the air mixing end 223 . Ribs or grooves (not shown). An axial gap is formed between the smooth hole wall and the non-smooth cylindrical surface.

Optionally, the first joint portion 211 is a non-smooth hole wall disposed in the throttle end 213 , and the non-smooth hole wall is provided with a plurality of ridges or grooves, and the second joint portion 221 is disposed on the air mixing end 223 . smooth cylinder (not shown in the figure). An axial gap is formed between the non-smooth bore wall and the smooth cylindrical surface.

Optionally, the first joint portion 211 is a non-smooth hole wall disposed in the throttle end 213, and the non-smooth hole wall is provided with a plurality of ridges and/or grooves, and the second joint portion is disposed at the air mixing end. On the non-smooth cylindrical surface, a plurality of convex edges and/or grooves (not shown in the figure) are arranged on the non-smooth cylindrical surface. The axial gap is formed between the non-smooth hole wall and the non-smooth cylindrical surface.

The matching structure of the first joint part and the second joint part of the micro-bubble nozzle of the present invention is not limited to the structure listed above. A "groove+groove" structure, a "rib+groove" structure, or other suitable matching structure.

Optionally, the radial gap 527 formed between the end surface of the air mixing end 223 and the abutting surface of the throttle end 213 is replaced by a radial hole (not shown) formed on the air mixing end 223 . The radial hole extends through the side wall of the air mixing end 223 to communicate with the axial gap 526 and the inner cavity of the air mixing end 223 respectively, so that under the action of the negative pressure created by the orifice 525, the air is allowed to pass through the axial direction. The gap 526 and this radial hole are drawn into the inner cavity of the air mixing end 223 .

Referring to FIG. 6 , FIG. 6 is a cross-sectional view of the second embodiment of the micro-bubble spray head of the present invention taken along the section line E-E of FIG. 4 . As shown in FIG. 6 , a cylindrical insertion portion 281 is formed in the radially constricted portion 528 . The insertion portion 281 extends into the air mixing end 213 of the downstream water outlet pipe member 522 around the orifice 525 . The inserting portion 281 can prevent the water flow jetted from the orifice 525 from breaking into the radial gap 527 and the axial gap 526 from the outlet of the intake passage and then flowing to the outside of the microbubble jetting head. Other parts not mentioned in this embodiment are the same as those in the previous embodiment.

Referring to FIG. 7 , FIG. 7 is a cross-sectional view of the third embodiment of the micro-bubble spray head of the present invention taken along the section line E-E of FIG. 4 . As shown in FIG. 7, the throttle hole 525 is formed on the throttle plate 528' independent of the intake pipe member 521, and is arranged in the center of the throttle plate 528' along the water flow direction C. As shown in FIG. An annular rib 214 extending radially inward is provided in the throttle end 213 of the water inlet pipe member 521 . The side of the annular rib 214 facing the water outlet pipe part 522 is flush with the abutment surface of the throttle hole 213 , so the outlet of the air intake passage is located between the annular rib 214 and the air mixing end 223 . The throttle plate 528' rests on the annular rib 214 towards the outlet pipe member 522. A seal 529 is also provided between the throttle plate 528' and the inner wall of the intake pipe part 521 to prevent water from bypassing the throttle hole and flowing into the water outlet pipe part 522. Seal 529 may be any suitable form of sealing material, such as a rubber seal. Other parts not mentioned in this embodiment are the same as those in the previous embodiment.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, but those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can combine technical features from different embodiments, and can also make equivalent changes or replacements to related technical features, and the technical solutions after these changes or replacements are all will fall within the protection scope of the present invention.

Claims (10)

1. a microbubble nozzle, is characterized in that, comprises: a water inlet pipe part, the water inlet pipe part has a water inlet end allowing water to flow in and a throttle end, the throttle end is provided with a first joint; an orifice, which is arranged in the water inlet pipe part along the water flow direction; A water outlet pipe part, the water outlet pipe part has an air mixing end and a micro-bubble generating end, the air mixing end is provided with a second joint part, when the water inlet pipe part and the water outlet pipe part are assembled, the first An engaging portion and the second engaging portion are engaged with each other, and an axial gap is formed between the first engaging portion and the second engaging portion, and the axial gap is connected to a diameter provided on or near the air mixing end. The inlet passages communicate with each other to form an intake passage, and the outlet of the intake passage is close to the orifice so that when water flows through the orifice, a negative pressure is formed near the outlet of the intake passage and thus the outside Air is sucked into the water outlet pipe part to mix with water to produce sparkling water; and a bubbler, which is fixed to the microbubble generating end of the water outlet pipe part and is arranged to be able to form microbubble water when the bubbled water flows therethrough. 2 . The micro-bubble spray head according to claim 1 , wherein the micro-bubble spray head comprises a radial throttle portion formed in the throttle end, and the throttle hole is formed at the radial node. 3 . on the stream. 3 . The micro-bubble spray head according to claim 1 , wherein the micro-bubble spray head comprises a throttle plate, the throttle end is provided with an annular rib extending radially inward, and the throttle plate faces the The water outlet pipe part abuts on the annular rib, and the throttle hole is formed on the throttle plate. 4 . The micro-bubble spray head according to claim 1 , wherein the radial passage is a radial gap formed between the surfaces of the throttle end and the air mixing end abutting, or a radial gap formed in the Radial holes on the air mixing end. 5. The microbubble spray head according to any one of claims 1-3, wherein the first joint is an internally threaded hole wall disposed in the throttle end, and the second joint is is an external thread cylindrical surface provided on the air mixing end; or, the first engaging portion is an external thread cylindrical surface provided on the throttle end, and the second engaging portion is an external thread cylindrical surface provided on the air The inner thread hole wall in the mixing end; the axial gap is formed between the inner thread hole wall and the outer thread cylinder surface. 6. The microbubble spray head according to any one of claims 1-3, wherein the first joint is a smooth hole wall disposed in the throttle end, and the second joint is A non-smooth cylindrical surface arranged on the air mixing end, a plurality of convex edges or grooves are arranged on the non-smooth cylindrical surface, and the axial gap is formed between the smooth hole wall and the non-smooth cylindrical surface between. 7. The microbubble spray head according to any one of claims 1-3, wherein the first joint is a non-smooth hole wall disposed in the throttle end, the non-smooth hole wall There are a plurality of ridges or grooves on it, the second joint is a smooth cylindrical surface provided on the air mixing end, and the axial gap is formed between the non-smooth hole wall and the smooth cylindrical surface between. 8. The microbubble spray head according to any one of claims 1-3, wherein the first joint is a non-smooth hole wall disposed in the throttle end, the non-smooth hole wall There are a plurality of ridges and/or grooves on it, and the second joint is a non-smooth cylindrical surface arranged on the air mixing end, and a plurality of ridges and/or a plurality of ridges and/or on the non-smooth cylindrical surface a groove, and the axial gap is formed between the non-smooth hole wall and the non-smooth cylindrical surface. 9. The microbubble nozzle according to any one of claims 1-3, wherein the bubbler is a mesh structure, and the mesh structure comprises a plastic fence, a metal mesh, or a polymer material mesh . 10. A washing device, characterized in that the washing device comprises the micro-bubble spray head according to any one of claims 1-9, the micro-bubble spray head is configured to generate micro-bubble water in the washing device.

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