CN115517567A - Micro-bubble generating device - Google Patents

Abstract

The invention relates to the technical field of household appliances, and particularly discloses a micro-bubble generating device. The micro-bubble generating device comprises an outer tube body with a containing cavity, and an inner tube body, a core body and a filter screen which are contained in the containing cavity; the outer tube body is provided with a first inlet, a first outlet and a first air inlet which are respectively communicated with the accommodating cavity; the inner pipe body is provided with a channel, a second inlet, a second outlet and a second air inlet which are respectively communicated with the channel, and the second inlet is communicated with the first inlet; the channel extends from the second inlet towards the second outlet with a gradually increasing diameter; the local core body is inserted into the channel and surrounds the channel to form a flow channel; the core body is provided with a through hole for communicating the flow passage with the first outlet; the second air inlet hole is communicated with the first air inlet hole and the flow channel, the filter screen is arranged on the first outlet and covers the first outlet, and the end face of the core body back to the inner tube body is abutted to the filter screen. The micro-bubble generating device has simple structure, can realize self-suction air intake, and can obtain high-quality micro-bubble water.

Description

Micro-bubble generating device

Technical Field

The invention relates to the technical field of household appliances, in particular to a micro-bubble generating device.

Background

Along with the improvement of living standard of people, people put forward higher and higher requirements on household water such as bath water, fruit and vegetable and tableware washing water and the like, the household water is required to be pollution-free, deep cleaning is required to be realized, the bacteriostatic and bactericidal activity is required, and good water using experience is also required. Therefore, a microbubble generator has been developed, which is attached to a water outlet end of a faucet, a shower head, or the like, and can form water mixed with gas such as air into microbubble water, thereby achieving an effect of sterilization or the like when microbubbles are contained in the water and improving water use experience of people. However, the conventional microbubble generator has a complex structure and is inconvenient to assemble, a gas booster pump is required to be arranged at the water inlet end to press air and other gases into water to obtain gas-liquid mixed water, and the gas-liquid mixed water can be converted into high-quality microbubble water under high pressure.

Disclosure of Invention

The embodiment of the invention aims to provide a micro-bubble generating device, which at least solves the problems that the existing micro-bubble generating device is complex in structure and inconvenient to assemble and disassemble, gas needs to be pressurized to dissolve the gas into water, and high-quality micro-bubble water can be obtained under high pressure.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

the micro-bubble generating device comprises an outer pipe body, an inner pipe body, a core body and a filter screen;

the outer tube body is provided with an accommodating cavity, a first inlet, a first outlet and a first air inlet; the first inlet and the first outlet are arranged at two opposite ends of the outer tube body and are communicated with the accommodating cavity; the first air inlet hole penetrates through the wall body of the outer tube body and is communicated with the accommodating cavity;

the inner tube body and the core body are arranged in the accommodating cavity; the inner pipe body is provided with a channel, a second inlet, a second outlet and a second air inlet; the second inlet and the second outlet are arranged at two opposite ends of the inner pipe body and are communicated with the channel; the second inlet is communicated with the first inlet; the channel extends from the second inlet towards the second outlet with a gradually increasing diameter; the second air inlet hole penetrates through the wall body of the inner pipe body;

the local core body is inserted into the channel from one end of the second outlet and forms a flow channel with the channel in an enclosing manner; the core body is provided with a through hole for communicating the flow passage with the first outlet; the second air inlet hole is communicated with the first air inlet hole and the flow passage;

the filter screen is arranged on the first outlet and covers the first outlet, and the core body backs on the end surface of the inner pipe body and is abutted against the filter screen.

In a possible embodiment, the width of the flow channel increases gradually from the second inlet to the second outlet.

In a possible embodiment, the outer tube body comprises a tube main body and a circular plate body, the circular plate body is arranged at the end opposite to the first inlet and is connected with the tube main body, and the first outlet is a through hole penetrating through the circular plate body;

the first air inlet hole is arranged on the tube main body in a penetrating way; a first annular sealing part and a second annular sealing part are formed on the outer wall of the inner tube body, and a second air inlet is formed between the first annular sealing part and the second annular sealing part;

or, the first air inlet hole is arranged on the circular plate body in a penetrating mode, a first annular sealing portion is formed on the outer wall of the inner pipe body, and the first annular sealing portion is arranged close to one end of the second inlet.

In a possible embodiment, the first annular sealing part comprises two first annular bosses arranged at intervals, and a first mounting groove for mounting the sealing ring is formed by the two first annular bosses and the wall body of the inner pipe body in a surrounding manner; the second annular sealing part comprises two second annular bosses which are arranged at intervals, and a second mounting groove for mounting the sealing ring is formed by enclosing the two second annular bosses and the wall body of the inner pipe body.

In one possible embodiment, the tube main body is provided with a connection portion for mounting the microbubble generation device.

In a possible embodiment, the connecting portion is an external thread, which is arranged close to an outer wall of the first inlet.

In a possible implementation manner, the core body comprises an annular base and a cone, the cone extends from the annular base towards the direction of the second inlet, a flow passage is formed by the side surface of the cone and the wall surface of the passage in a surrounding manner, and the annular base is provided with a through hole.

In one possible embodiment, the outer tube body comprises a tube body and a circular plate body arranged at one end of the tube body, and the annular base is connected with the circular plate body; the annular base includes the cavity frame in the annular and a plurality of reposition of redundant personnel portion, and the inside wall of the cavity frame in the annular is located at a plurality of reposition of redundant personnel portion intervals and extends and be connected with the cone towards the side of cone, encloses by cavity frame in the annular, cone and two adjacent reposition of redundant personnel portions and closes and form the through-hole.

In a possible embodiment, the end surface of each flow dividing part facing the second inlet direction is an arc-shaped curved surface protruding towards the second inlet;

and/or a plurality of positioning bulges are convexly arranged on the side surface of the cone.

In a possible embodiment, the end surface of the annular base facing away from the inner tube body abuts against the filter screen; the bottom surface of the cone and the end surface of the flow dividing part facing the first inlet are spaced from the filter screen.

The invention has the beneficial effects that:

the microbubble generator provided by the embodiment of the invention mainly comprises an outer pipe body, an inner pipe body, a core body and a filter screen, wherein the inner pipe body and the core body are detachably arranged in an accommodating cavity of the outer pipe body, and the microbubble generator has the characteristics of simple structure and convenience in disassembly and assembly; more importantly, the first air inlet hole is formed in the outer pipe body, the second air inlet hole is formed in the inner pipe body, the channel of the inner pipe body and the cone of the core body form the flow channel, the second air inlet hole is communicated with the first air inlet hole and the flow channel, the channel extends from the second inlet to the second outlet in the trend of gradually increasing the diameter, water flowing in from the first inlet can release pressure under smaller pressure along with the gradual increase of the channel, gas can be sucked from the second air inlet due to the reduction of the pressure in the flow channel, the sucked gas is directly mixed with the water, and micro bubbles with uniform particles, small size and large quantity can be formed under the action of the cutting and beam current of the filter screen arranged at the first outlet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a microbubble generator according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a microbubble generator according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a microbubble generator according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of an outer tube according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of an inner tube according to one embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a core provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic perspective view of a microbubble generator according to a second embodiment of the present invention;

fig. 8 is an exploded schematic view of a microbubble generator according to a second embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of a microbubble generator according to a second embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of an outer tube according to a second embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of an inner tube body provided in accordance with a second embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view of a core provided in accordance with a second embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of a microbubble generator according to a third embodiment of the present invention;

fig. 14 is a schematic cross-sectional view of another microbubble generation device according to a third embodiment of the present invention;

fig. 15 is a schematic perspective view of a water outlet grate according to a third embodiment of the present invention.

Reference numerals:

1. a microbubble generator;

10. a flow channel;

11. an outer tubular body; 110. an accommodating chamber; 111. a tube body; 1110. a first inlet; 1111. a first outlet; 1112. a first air intake hole; 1113; a connecting portion; 112. a circular plate body;

12. an inner tube body; 120. a channel; 1201. a first wall surface; 1202. a second wall surface; 121. a second inlet; 122. a second outlet; 123. a second air intake hole; 124. a first annular seal portion; 1241. a first annular boss; 1242. a first mounting groove; 125. a second annular seal portion; 1251. a second annular boss; 1252. a second mounting groove; 126. a second deviation rectifying boss;

13. a core body; 130. a through hole; 131. an annular base; 1310. an annular hollow frame; 1311. a flow dividing section; 132. a cone; 1320. positioning the projection; 133. a first deviation rectification boss;

14. a filter screen;

15. a first annular seal ring;

16. a second annular seal ring;

17. an intake valve;

18. discharging the water out of the grate; 181. a circular grate main body; 182. mounting a boss; 183. annular spacing boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Fig. 1 to 6 show a schematic structural diagram of a microbubble generator 1 according to a first embodiment.

Referring to fig. 1 and 2, the microbubble generator 1 includes an outer tube 11, an inner tube 12, a core 13, and a filter 14.

Specifically, referring to fig. 2, 3 and 4, the outer tube 11 has a receiving cavity 110, a first inlet 1110, a first outlet 1111 and a first air inlet 1112; a first inlet 1110 and a first outlet 1111 are provided at opposite ends of the outer tube 11, and both the first inlet 1110 and the first outlet 1111 communicate with the receiving chamber 110; the first air inlet holes 1112 are disposed through the wall of the outer tube 11 and are communicated with the accommodating chamber 110.

Referring to fig. 2, 3 and 5, the inner tube 12 is detachably installed in the accommodating cavity 110, the inner tube 12 has a channel 120, a second inlet 121, a second outlet 122 and a second air inlet 123; a second inlet 121 and a second outlet 122 are provided at opposite ends of the inner tube 12, and both the second inlet 121 and the second outlet 122 are communicated with the channel 120, while the second inlet 121 is communicated with the first inlet 1110 and the second outlet 122 is communicated with the first outlet 1111; the passage 120 is extended from the second inlet 121 toward the second outlet 122 with a gradually increasing diameter. In some embodiments, the number of the second air intake holes 123 is plural, and the second air intake holes 123 penetrate the inner tube 12 from the outer wall of the inner tube 12 to the inner wall of the inner tube 12, so that the channel 120 communicates with the outside of the inner tube 12 through the second air intake holes 123 in addition to the second inlet 121 and the second outlet 122. In some embodiments, the central axes of the second inlet apertures 123 are at an angle to the central axis of the passageway 120, and a vector line collinear with the central axes of the second inlet apertures 123 and a vector line collinear with the central axis of the passageway 120 make an angle greater than 0 ° and no greater than 90 °, with the direction of the second inlet 121 to the second outlet 122 being forward. Of course, in some embodiments, the second air inlet holes 123 penetrating the wall of the inner tube 12 may be not straight holes, but may also be curved holes, as long as it is ensured that the water flowing into the channel 120 from the second inlet 121 end does not flow out from the second air inlet holes 123.

Referring to fig. 2, 3 and 6, the core 13 is also detachably mounted in the accommodating chamber 110, and a partial core 13 is inserted into the passage 120 from one end of the second outlet 122 and encloses the passage 120 as the flow channel 10. The filter screen 14 is arranged in the outer tube body 11, is arranged at one end close to the first outlet 1111 and covers the first outlet 1111, one end of the core body 13, which is opposite to the inner tube body 12, is pressed against the filter screen 14, and the filter screen 14 plays a role in cutting and restraining the mixed water of the gas and the liquid discharged from the second outlet 122. Therefore, the water flowing into the microbubble generator 1 from the first inlet 1110 on the outer tube 11 flows into the flow channel 10 through the second inlet 121, and since the width of the flow channel 10 gradually increases from the second inlet 121 to the second outlet 122, the water pressure in the flow channel 10 gradually decreases, so that the atmospheric pressure in the flow channel 10 is lower than the atmospheric pressure outside the microbubble generator 1, air and other gases can spontaneously enter from the first air inlet 1112, flow into the flow channel 10 through the second air inlet 123, and are fully mixed with the water, and a pressure relief process is continued in the mixing process, and under the cutting and beam current of the filter screen 14, microbubbles with uniform particles, small size and large quantity are generated, and high-quality microbubble water can be obtained at the first outlet 1111.

Referring to fig. 4 and 3, in some embodiments, the outer tube 11 includes a tube main body 111 and a circular plate 112, the circular plate 112 is disposed at an end opposite to the first inlet 1110 and connected to the tube main body 111, and a plurality of first outlets 1111 are through holes penetrating the circular plate 112 along a central axis of the accommodating chamber 110. The filter screen 14 is laid on the surface of the circular plate 112 facing the first inlet 1110 and covers the first outlet 1111, and the end of the core 13 facing away from the inner tube 12 is pressed against the filter screen 14. In some embodiments, the outer tube 11 is provided with a connection part 1113, and the connection part 1113 is used to connect the microbubble generator 1 to a tube such as a water pipe. In some embodiments, the connection portion 1113 is an external thread, and the external thread is disposed near the outer wall of the first inlet 1110 to connect the microbubble generator 1 with a pipe such as a water pipe. Of course, the connecting portion 1113 for interconnecting the microbubble generator 1 and the pipe such as the water pipe is not limited to a screw, and may be a connecting structure of another form, such as a snap structure or welding.

Referring to fig. 5 and 3, in some embodiments, a first annular sealing portion 124 and a second annular sealing portion 125 are formed on an outer wall of the inner pipe 12, the first annular sealing portion 124 and the second annular sealing portion 125 are spaced apart, and the second air inlet holes 123 are formed in a portion between the first annular sealing portion 124 and the second annular sealing portion 125. In some embodiments, the first annular sealing portion 124 is disposed adjacent to an outer wall of the second inlet 121, and the second annular sealing portion 125 is disposed adjacent to an outer wall of the second outlet 122, so that the first and second air intake holes 1112 and 123 can be sandwiched between the first and second annular sealing portions 124 and 125, thereby ensuring communication between the first and second air intake holes 1112 and 123. In some embodiments, the first annular sealing portion 124 includes two first annular bosses 1241 disposed at intervals, the two first annular bosses 1241 protrude from the outer wall of the inner tube 12 toward the outer tube 11, a first mounting groove 1242 is formed by the two first annular bosses 1241 and the wall of the inner tube 12, and the first mounting groove 1242 is used for the first annular sealing ring 15 to prevent the gas entering from the first gas inlet holes 1112 from flowing out along the gap between the outer tube 11 and the inner tube 12. The second annular sealing portion 125 includes two second annular bosses 1251 disposed at intervals, the two second annular bosses 1251 are disposed in a protruding manner from the outer wall of the inner tube 12 toward the outer tube 11, a second mounting groove 1252 is formed by the two second annular bosses 1251 and the wall of the inner tube 12, and the second mounting groove 1252 is used for mounting the second annular sealing ring 16, so as to prevent the gas entering from the first gas inlet holes 1112 from flowing out along the gap between the outer tube 11 and the inner tube 12.

Referring to fig. 3, 5 and 6, in some embodiments, the channel 120 has a first diameter, the cone 132 has a second diameter, the second diameter gradually increases from the vertex of the cone 132 to the bottom of the cone 132, and the difference between the first diameter and the second diameter gradually increases from the second inlet 121 to the second outlet 122, that is, when the microbubble generator 1 is cut perpendicular to the central axis of the outer tube 11, the cross section obtained has a circular ring, which is the cross section of the flow channel 10, and the difference between the diameter of the outer ring and the diameter of the inner ring gradually increases from the second inlet 121 to the second outlet 122. Thus, the gas-liquid mixed water flowing through the flow channel 10 can release pressure more sufficiently, so that the gas-liquid mixed water can release pressure under smaller pressure and form uniform micro-nano bubbles, thereby obtaining water containing micro-bubbles.

Referring to FIG. 5, in some embodiments, the channel 120 has a first wall 1201 and a second wall 1202, the first wall 1201 is connected at one end to the second inlet 121 and at the other end to one end of the second wall 1202, and the second wall 1202 is connected at the other end to the second outlet 122; the tangent of the first wall 1201 forms a first angle with the central axis of the channel 120, the tangent of the second wall 1202 forms a second angle with the central axis of the channel 120, the first angle is constant, the second angle formed from the connection of the second wall 1202 with the first wall 1201 to the connection with the second outlet 122 increases gradually, and the second angle increases gradually on the basis of the first angle. In other embodiments, the first angle may be gradually increased, but the second angle is increased by a larger amount than the first angle, so as to further improve the pressure release effect under a smaller pressure.

Referring to fig. 2, 3 and 6, in some embodiments, the core 13 includes an annular base 131 and a cone 132, the cone 132 is disposed on the annular base 131, the cone 132 extends from the annular base 131 toward the second inlet 121, a space is provided between a side surface of the cone 132 and a wall surface of the passage 120, the side surface of the cone 132 and the wall surface of the passage 120 enclose a flow channel 10, the flow channel 10 is used for passing a gas-liquid mixture (e.g., gas-liquid mixture water), a through hole 130 is formed in the annular base 131, and the through hole 130 is used for communicating the flow channel 10 with the first outlet 1111.

Referring to fig. 6 and 3, in some embodiments, the end of annular base 131 opposite to first inlet 1110 is pressed against filter 14. In some embodiments, the annular base 131 includes an annular hollow frame 1310 and a plurality of flow dividing portions 1311, the flow dividing portions 1311 are spaced apart from an inner sidewall of the annular hollow frame 1310, extend toward a side of the cone 132, and are connected to the cone 132, and the annular hollow frame 1310, the cone 132, and two adjacent flow dividing portions 1311 enclose the through hole 130. In some embodiments, the plurality of flow dividing portions 1311 are spaced apart from each other on the inner sidewall of the annular hollow frame 1310, and in other embodiments, the distribution of the plurality of flow dividing portions 1311 on the inner sidewall of the annular hollow frame 1310 may be in a non-uniform spacing.

Referring to fig. 6 and 3, in some embodiments, each of the flow dividing portions 1311 has an end surface facing the second inlet 121 and an end surface facing away from the second inlet 121, and the end surface facing the second inlet 121 is an arc-shaped curved surface protruding toward the second inlet 121; and a distance is reserved between the end surface back to the direction of the second inlet 121 and the filter screen 14 so as to further provide more space for releasing pressure of the gas-liquid mixed water. In some embodiments, when the end of annular base 131 opposite to first inlet 1110 is pressed against filter 14, in particular, the end of annular hollow frame 1310 opposite to first inlet 1110 is pressed against filter 14.

Referring to fig. 6 and 3, in some embodiments, a space is also provided between the bottom surface of the cone 132 and the filter screen 14, and in combination with the space between the flow splitting portion 1311 and the filter screen 14, a rectification space may be provided for the liquid flow divided by the flow splitting portion 1311, and meanwhile, in combination with the structural arrangement of the filter screen 14, the microbubble water body achieves a better rectification effect. In some embodiments, a plurality of positioning protrusions 1320 are raised on the side of the cone 132 for positioning the core 13 in the channel 120 to facilitate assembly of the core 13 and the inner tube 12.

Referring to fig. 2 and 3, in some embodiments, the micro-bubble generating device 1 further includes a first annular sealing ring 15 and a second annular sealing ring 16, wherein the first annular sealing ring 15 and the second annular sealing ring 16 are disposed between the outer tube 11 and the inner tube 12, the first annular sealing ring 15 and the second annular sealing ring 16 are spaced apart from each other, a first air inlet hole 1112 is disposed at a position of the outer tube 11 between the first annular sealing ring 15 and the second annular sealing ring 16, a second air inlet hole 123 is disposed at a position of the inner tube 12 between the first annular sealing ring 15 and the second annular sealing ring 16, and the first annular sealing ring 15 and the second annular sealing ring 16 are used for sealing the outer tube 11 and the inner tube 12, so as to prevent air entering the accommodating cavity 110 from the first air inlet hole 1112 from flowing out from a gap between the outer tube 11 and the inner tube 12, and provide a flow gap for the first air inlet hole 1112 and the second air inlet hole 123 to communicate with each other.

Referring to fig. 2 and 3, in some embodiments, the microbubble generator 1 further includes an air intake valve 17, and the air intake valve 17 is detachably installed on the first air intake hole 1112 to regulate the flow rate of the gas entering the accommodating chamber 110. In some embodiments, the intake valve 17 is a stud, the stud is screwed into the first intake hole 1112, a gap is formed between the stud and the first intake hole 1112, and air or the like flows from the gap between the stud and the first intake hole 1112 to the second intake hole 123, so that the rate of self-priming intake can be adjusted.

The microbubble generator 1 provided by the embodiment can be installed on a water faucet or a shower head and other parts so as to be convenient for a user to use, and high-quality microbubble water can be obtained after the microbubble generator 1 is installed at a water consumption point, so that the water consumption experience of the user is improved.

Example two

Referring to fig. 7 to 12 and fig. 1 to 6, the present embodiment differs from the first embodiment mainly in the location where the first air inlet holes 1112 are disposed, the outer wall of the inner tube 12 and the structure of the annular base 131 of the core body 13. In the first embodiment, the first air intake holes 1112 are provided on the tube main body 111; a first annular sealing part 124 and a second annular sealing part 125 are annularly arranged on the outer wall of the inner pipe body 12; the annular base 131 of the core body 13 is not provided with a first deviation rectifying boss 133; the outer wall of the inner pipe body 12 is not provided with the second deviation rectifying boss 126. In the embodiment, the first air inlet holes 1112 are disposed on the circular plate 112, that is, the first air inlet holes 1112 penetrate through the circular plate 112 along the central axis of the circular plate 112, so as to allow air to enter from the water outlet end of the micro-bubble generating device 1; a plurality of first deviation rectifying bosses 133 are annularly arranged on the outer wall of the annular base 131, and the first deviation rectifying bosses 133 can improve the installation accuracy of the core body 13 when the core body 13 is installed in the accommodating cavity 110 of the outer tube body 11, so that the core body 13 is arranged coaxially with the outer tube body 11 as much as possible, and eccentricity is avoided; a plurality of first deviation rectifying bosses 133 are arranged at intervals, each first deviation rectifying boss 133 extends from the outer wall of the annular base 131 towards the inner wall surface of the outer pipe body 11, and a first gap (not marked in the figure) for air and other gases to pass through is formed by the surrounding of the inner wall surfaces of the adjacent two first deviation rectifying bosses 133 and the outer pipe body 11 and the outer wall of the annular base 131; a first annular sealing part 124 is annularly arranged on the outer wall of the inner tube body 12, and the first annular sealing part 124 is arranged close to the outer wall of the second inlet 121; a plurality of second deviation rectifying bosses 126 are annularly arranged on the outer wall of the inner pipe body 12, and the second deviation rectifying bosses 126 can improve the installation accuracy of the inner pipe body 12 when the inner pipe body 12 is installed in the accommodating cavity 110 of the outer pipe body 11, so that the inner pipe body 12 is arranged coaxially with the outer pipe body 11 as much as possible, the eccentricity is avoided, and the inner pipe body 12 and the core body 13 are arranged coaxially as much as possible; and a plurality of second deviation rectifying bosses 126 are arranged at intervals, each second deviation rectifying boss 126 extends from the outer wall surface of the inner tube 12 towards the inner wall surface of the outer tube 11, two adjacent second deviation rectifying bosses 126, the inner wall surface of the outer tube 11 and the outer wall surface of the inner tube 12 enclose a second gap (not marked in the figure) for gas to pass through, and the second gap is communicated with the first gap, so that the gas such as air entering from the first air inlet 1112 can flow through the first gap and the second gap in sequence to enter the accommodating cavity 110, and finally enters the flow channel 10 through the second air inlet 123.

In addition to the above differences, the structure of the microbubble generator 1 and its components provided in this embodiment can be optimized with reference to the first embodiment, and will not be described in detail herein.

EXAMPLE III

Referring to fig. 13 to 15 and fig. 1 to 6 or fig. 7 to 12, the difference between the present embodiment and the first embodiment and the second embodiment mainly lies in whether the microbubble generator 1 includes the water outlet grate 18, and in the first embodiment and the second embodiment, the microbubble generator 1 does not include the water outlet grate 18. In this embodiment, the microbubble generating device 1 further comprises a water outlet grate 18, the water outlet grate 18 comprises a circular grate main body 181, a mounting boss 182 and an annular limiting boss 183, wherein the mounting boss 182 is annularly arranged on the periphery of the circular grate main body 181 and is convexly arranged along the radial direction of the circular grate main body 181; the annular limit boss 183 is arranged at the edge of the mounting boss 182, and is convexly arranged along the central axis of the circular grate main body 181 in the direction away from the circular grate main body 181, the water outlet grate 18 is mounted at the first outlet 1111, the circular grate main body 181 is inserted into the first outlet 1111, the mounting boss 182 abuts against the surface of the circular plate body 112 facing the first inlet 1110, the filter screen 14 is mounted on the surface of the circular grate main body 181 facing the first inlet 1110, the side edge of the filter screen 14 abuts against the annular limit boss 183, and the end of the annular base 131 facing the first outlet 1111 abuts against the annular limit boss 183 and/or the filter screen 14.

In addition to the above differences, the structure of the microbubble generator 1 and its components provided in this embodiment can be optimally designed with reference to the first embodiment or the second embodiment, and will not be described in detail herein.

The above is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The micro-bubble generating device is characterized by comprising an outer pipe body, an inner pipe body, a core body and a filter screen;

the outer tube body is provided with an accommodating cavity, a first inlet, a first outlet and a first air inlet; the first inlet and the first outlet are arranged at two opposite ends of the outer pipe body and are communicated with the accommodating cavity; the first air inlet hole penetrates through the wall body of the outer tube body and is communicated with the accommodating cavity;

the inner tube body and the core body are both arranged in the containing cavity; the inner pipe body is provided with a channel, a second inlet, a second outlet and a second air inlet; the second inlet and the second outlet are arranged at two opposite ends of the inner tube body and are communicated with the channel; the second inlet is communicated with the first inlet; the passage extends from the second inlet toward the second outlet with a gradually increasing diameter; the second air inlet hole penetrates through the wall body of the inner pipe body;

part of the core body is inserted into the channel from one end of the second outlet and forms a flow channel with the channel in an enclosing manner; a through hole for communicating the flow passage with the first outlet is formed in the core body; the second air inlet hole is communicated with the first air inlet hole and the flow passage;

the filter screen is arranged on the first outlet and covers the first outlet, and the end face of the core body, which is back to the inner tube body, is abutted against the filter screen.

2. The apparatus according to claim 1, wherein the width of the flow path gradually increases from the second inlet to the second outlet.

3. The microbubble generator as claimed in claim 1, wherein the outer tube comprises a tube main body and a circular plate body, the circular plate body being disposed at an end opposite to the first inlet and connected to the tube main body, the first outlet being a through hole formed through the circular plate body;

the first air inlet hole is arranged on the pipe main body in a penetrating way; a first annular sealing part and a second annular sealing part are formed on the outer wall of the inner pipe body, and the second air inlet hole is formed between the first annular sealing part and the second annular sealing part;

or the first air inlet hole penetrates through the circular plate body, a first annular sealing portion is formed on the outer wall of the inner pipe body, and the first annular sealing portion is arranged close to one end of the second inlet.

4. The apparatus of claim 3, wherein the first annular sealing portion comprises two first annular bosses spaced apart from each other, and a first mounting groove for mounting a sealing ring is defined by the two first annular bosses and the wall of the inner tube; the second annular sealing part comprises two second annular bosses which are arranged at intervals, and a second mounting groove for mounting a sealing ring is formed by the two second annular bosses and the wall body of the inner pipe body in an enclosing mode.

5. The apparatus according to claim 3, wherein the tube main body is provided with a connection portion for mounting the microbubble generation device.

6. The apparatus of claim 5, wherein the connection portion is an external thread, and the external thread is disposed adjacent to an outer wall of the first inlet.

7. The apparatus according to any one of claims 1 to 6, wherein the core includes an annular base and a cone, the cone extends from the annular base in a direction toward the second inlet, a side surface of the cone and a wall surface of the passage enclose the flow passage, and the annular base is provided with the through hole.

8. The apparatus as claimed in claim 7, wherein the outer tube comprises a tube body and a circular plate disposed at one end of the tube body, the annular base being connected to the circular plate; annular base includes cavity frame and a plurality of reposition of redundant personnel portion in the annular, and is a plurality of reposition of redundant personnel portion interval is located the inside wall of cavity frame in the annular and orientation the side of cone extend and with the cone is connected, by cavity frame in the annular cone and adjacent two reposition of redundant personnel portion encloses to close and forms the through-hole.

9. The apparatus as claimed in claim 8, wherein each of the diverging portions has an end surface facing the second inlet and an arc-shaped curved surface protruding toward the second inlet;

and/or a plurality of positioning bulges are convexly arranged on the side surface of the cone body.

10. The microbubble generator as claimed in claim 7, wherein an end surface of the annular base facing away from the inner tube body abuts against the filter screen; the bottom surface of the cone and the end surface of the flow dividing part facing the first inlet are spaced from the filter screen.

Images