CN114542435A

CN114542435A - Diaphragm pump and series-parallel connection mixed fluid channel module thereof

Info

Publication number: CN114542435A
Application number: CN202210277615.3A
Authority: CN
Inventors: 颜宏
Original assignee: Xiamen Conjoin Electronics Technology Co ltd
Current assignee: Xiamen Conjoin Electronics Technology Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-05-27

Abstract

The invention relates to a diaphragm pump and a series-parallel mixed fluid channel module thereof, which comprise a cover plate (11) and a valve seat (12), and a first fluid inlet (15), a second fluid inlet (16) and a mixed fluid outlet (17) which are formed on the cover plate (11), it is characterized by also comprising a first fluid inlet cavity (21), a second fluid inlet cavity (22) and a mixed fluid outlet cavity (23) which are arranged in the inner cavity of the fluid channel module and are formed by buckling and sealing a cover plate (11) and a valve seat (12), the first fluid inlet chamber (21) is provided with a plurality of first fluid valve seat inlet holes (211, 212) which respectively correspond to first fluid mixing valve seat outlets (231, 232) arranged in the mixed fluid outlet chamber (23), the second fluid inlet chamber (22) is provided with a second fluid valve seat inlet hole (221) corresponding to a second fluid mixing valve seat outlet (233) provided in the mixed fluid outlet chamber (23). Through the structure of parallel structure intercommunication first fluid water and the structure of serial structure intercommunication second fluid air, reinforcing air pressure realizes in aqueous vapor mixing diaphragm pump that aqueous vapor effectively mixes.

Description

Diaphragm pump and series-parallel connection mixed fluid channel module thereof

Technical Field

The invention relates to a micro pump device, in particular to a micro diaphragm pump with series and parallel mixed fluid channels, and particularly relates to a diaphragm pump and a series and parallel mixed fluid channel module thereof.

Background

In the micro diaphragm pump, the fluid serial circulation and parallel circulation structures of the diaphragm capsules have advantages and disadvantages, such as stronger pumping pressure of the serial diaphragm pump and larger flow of the parallel diaphragm pump. Generally, in design, the integral product of the diaphragm capsules is designed into one of a serial structure or a parallel structure according to the functional requirements of product design.

The miniature diaphragm pump has wide application, and many application occasions need the mixture of two kinds of fluids, for example in the cleaning system of intelligent closestool, the mixed gas can promote the washing effect. It is known that the mixing of air into water is considerably influenced by the air pressure in addition to the temperature. Under normal conditions, the temperature in the atmosphere is in a normal temperature state, the mixing influence on water and air is in a stable state, and the pressure influence degree of gas can improve the water-air mixing effect. At present, a water-gas mixing pump on the market is only suitable for no-load or low back pressure, the load of the water-gas mixing pump exceeds 50kPa, a better gas mixing function cannot be realized, and the use scene is limited.

Aiming at the problems of the defects, the invention adopts the following technical scheme for improvement.

Disclosure of Invention

The invention aims to provide a diaphragm pump and a serial-parallel mixed fluid channel module thereof, and the disclosed technical scheme is as follows:

a series-parallel mixed fluid channel module comprises a cover plate (11) and a valve seat (12), and a first fluid inlet (15), a second fluid inlet (16) and a mixed fluid outlet (17) which are formed on the cover plate (11), it is characterized by also comprising a first fluid inlet cavity (21), a second fluid inlet cavity (22) and a mixed fluid outlet cavity (23) which are arranged in the inner cavity of the fluid channel module and are formed by buckling and sealing a cover plate (11) and a valve seat (12), the first fluid inlet chamber (21) is provided with a plurality of first fluid valve seat inlet holes (211, 212) which respectively correspond to first fluid mixing valve seat outlets (231, 232) arranged in the mixed fluid outlet chamber (23), the second fluid inlet chamber (22) is provided with a second fluid valve seat inlet hole (221) corresponding to a second fluid mixing valve seat outlet (233) provided in the mixed fluid outlet chamber (23).

The device also comprises a serial channel cavity (24) arranged in the second fluid inlet cavity (22), the first fluid valve seat inlet holes (211 and 212) and the first fluid mixing valve seat outlets (231 and 232) are arranged in a parallel connection type structure in the same connection mode, and the second fluid valve seat inlet hole (221) forms a serial connection type structure through the serial channel inlet hole (241) arranged in the serial channel cavity (24) corresponding to the second fluid mixing valve seat outlet (233).

The parallel structure is connected with a plurality of diaphragm capsules in parallel to form parallel fluid channels which are in and out at the same time, and the serial structure is connected with a plurality of diaphragm capsules in series to form serial fluid channels which are in one-way serial circulation.

Furthermore, the first fluid valve seat inlet holes (211, 212) and the first fluid mixing valve seat outlets (231, 232) are arranged in a structure that two groups of the first fluid valve seat inlet holes and the second fluid valve seat inlet holes (221) and the series channel inlet holes (241) are arranged in a structure that two holes are connected in series, and then the fluids formed in the mixing cavity (23) are mixed corresponding to the second fluid mixing valve seat outlets (233) and the first fluid mixing valve seat outlets (231, 232).

Further, the first fluid valve seat inlet hole (211, 212), the second fluid valve seat inlet hole (221) and the series passage inlet hole (241) are all provided with an umbrella-shaped one-way valve (121).

Furthermore, the first fluid mixing valve seat outlets (231, 232) and the second fluid mixing valve seat outlet (233) are provided with check valve plates (122).

Further, the first fluid is water, and the second fluid is air. The air and water are mixed, and because the specific gravity density of the water and the air is different, certain pressure, particularly the pressure of the air, is required for the mixing to achieve the effect of mixing the water and the air. In the invention, the water uses a parallel structure to increase the flow, and the air uses a serial structure to increase the air pressure, thereby achieving good mixing effect.

The invention also discloses a diaphragm pump, which comprises an outlet cover plate (11), a valve seat (12), a diaphragm device (13) and a driving device (14), wherein the outlet cover plate (11) is provided with a first fluid inlet (15), a second fluid inlet (16) and a mixed fluid outlet (17), the diaphragm device (13) comprises a diaphragm (131) provided with a plurality of first fluid diaphragm capsules (1311) and second fluid diaphragm capsules (1312, 1313) and a diaphragm seat (132) correspondingly assembled with the diaphragm, and the diaphragm pump is characterized in that the first fluid inlet cavity (21), the second fluid inlet cavity (22) and the mixed fluid outlet cavity (23) are formed by buckling and sealing the cover plate (11) and the valve seat (12), and the first fluid inlet cavity (21) is provided with a plurality of first fluid valve seat inlet holes (211, 212) which respectively correspond to a first fluid mixed valve seat outlet (231, a mixed fluid outlet) arranged in the mixed fluid outlet cavity (23), 232) The second fluid inlet chamber (22) is provided with a second fluid valve seat inlet hole (221) corresponding to a second fluid mixing valve seat outlet (233) provided in the mixed fluid outlet chamber (23).

Wherein a series channel chamber (24) is provided in the second fluid inlet chamber (22), the first fluid valve seat inlet holes (211, 212) and the first fluid mixing valve seat outlet holes (231, 232) are provided to form and couple a plurality of first fluid diaphragm capsules (1311); the second fluid valve seat inlet orifice (221) is correspondingly communicated with the second fluid mixing valve seat outlet orifice (233) through a serial channel inlet orifice (241) arranged in a serial channel cavity (24), and a plurality of second fluid diaphragm capsules (1312, 1313) are arranged and connected in series.

Further, the first fluid valve seat inlet holes (211, 212) and the first fluid mixing valve seat outlet holes (231, 232) are arranged in two sets of parallel connection structure to connect the two first fluid membrane bags (1311), the second fluid valve seat inlet holes (221) and the series channel inlet holes (241) are arranged in two holes in series connection structure to connect the two second fluid membrane bags (1312, 1313), and the fluids formed in the mixing cavity (23) are mixed corresponding to the second fluid mixing valve seat outlet holes (233) and the first fluid mixing valve seat outlet holes (231, 232).

Further, the first fluid is water, and the second fluid is air. In a relatively optimized design, the number of the diaphragm bags for water flow of the parallel channels is two, the number of the diaphragm bags for air pressure increase, which are communicated in series, is also two, the flow of water is increased in the parallel structure, and the water with the series-communicated pressure-enhanced air mixed large flow is better accommodated.

According to the technical scheme, the invention has the following beneficial effects:

according to the diaphragm pump and the serial-parallel mixed fluid channel module thereof, disclosed by the invention, the structure of communicating first fluid water through a parallel structure and the structure of communicating second fluid air through a serial structure are used for enhancing the air pressure, so that the water and the air are effectively mixed in the water-air mixed diaphragm pump; the invention realizes the control requirement of air on the flow rate on the basis of realizing the pressure of the serial structure and the design of the parallel structure of water;

according to the diaphragm pump and the serial-parallel mixed fluid channel module thereof, the two diaphragm bags are connected in parallel for pumping and inflating water, and the two diaphragm bags are connected in series for pumping and inflating air, so that the effect of stably and sufficiently mixing air and water under the high pressure of 0-150 kPa is realized, and the problem that the conventional miniature diaphragm pump product is difficult to effectively mix water and air under the normal condition in the background art is solved.

In the series-parallel mixed fluid channel module, in a series valve structure, the second umbrella valve is the air outlet valve of the first diaphragm capsule and the air inlet valve of the second diaphragm capsule, so that the volume is saved; two diaphragm bags are connected in series, the air tightness can be better in design, different diaphragm convex lips are adopted at the outlet, the air tightness of the inflating small hole is good, two large holes of the inflating water are not sticky easily, different sealing structures are designed separately because the air tightness requirements of the inflating water and the inflating water are different, the air tightness is good, the gas pressure is effectively guaranteed, and the better mixing effect is achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of a pump according to the preferred embodiment of the present invention;

FIG. 2 is an exploded view of the pump structure in accordance with the preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of the pump according to the preferred embodiment of the present invention;

FIG. 4 is an exploded view of the flow direction of the fluid in the fluid channel module according to the preferred embodiment of the present invention;

FIG. 5 is an exploded view of the flow direction of the fluid in the fluid channel module according to the preferred embodiment of the present invention;

FIG. 6 is an exploded view of the cover plate and valve seat of the fluid passage module according to the preferred embodiment of the present invention;

FIG. 7 is a schematic top view of a valve seat structure according to a preferred embodiment of the present invention;

FIG. 8 is a bottom view of the valve seat structure of the preferred embodiment of the present invention;

FIG. 9 is a partial B-B schematic view of a cross-sectional view A-A of the internal structure of the pump in accordance with the preferred embodiment of the present invention;

fig. 10 shows a series-parallel mixed fluid check valve configuration in accordance with a preferred embodiment of the present invention.

In the figure, a pump 10, an outlet cover plate 11, a valve seat 12, a diaphragm device 13, a driving device 14, a first fluid inlet 15, a second fluid inlet 16, a mixed fluid outlet 17;

valve plate 121, umbrella valve 122;

a diaphragm 131, a diaphragm seat 132, a first fluid diaphragm bladder 1311, a second

fluid diaphragm bladder

1312, 1313;

a first fluid inlet chamber 21, first fluid valve

seat inlet orifices

211, 212, a second fluid inlet chamber 22, a second fluid valve seat inlet orifice 221, a mixed fluid outlet chamber 23, first fluid mixing

valve seat outlets

231, 232, a second fluid mixing valve seat outlet 233, a series passage chamber 24, a series passage inlet orifice 241, a series passage outlet 242.

Detailed Description

The invention is further described with reference to the following drawings and detailed description.

As shown in fig. 1 to 5, a series-parallel mixed fluid channel module includes a cover plate 11 and a valve seat 12, and a first fluid inlet 15, a second fluid inlet 16 and a mixed fluid outlet 17 designed on the cover plate 11, and further includes a first fluid inlet chamber 21, a second fluid inlet chamber 22 and a mixed fluid outlet chamber 23 formed by the cover plate 11 and the valve seat 12 being snap-sealed and disposed in an internal cavity of the fluid channel module, the first fluid inlet chamber 21 is provided with a plurality of first fluid valve

seat inlet holes

211, 212 respectively corresponding to first fluid mixed

valve seat outlets

231, 232 disposed in the mixed fluid outlet chamber 23, and the second fluid inlet chamber 22 is provided with a second fluid valve seat inlet hole 221 corresponding to a second fluid mixed valve seat outlet 233 disposed in the mixed fluid outlet chamber 23.

As shown in fig. 6 to 9, the fluid mixing valve further includes a serial channel chamber 24 disposed in the second fluid inlet chamber 22, the first fluid valve

seat inlet holes

211 and 212 and the first fluid mixing

valve seat outlets

231 and 232 are disposed in a parallel connection structure, and the second fluid valve seat inlet hole 221 is formed in a serial connection structure corresponding to the second fluid mixing valve seat outlet 233 through a serial channel inlet hole 241 disposed in the serial channel chamber 24. The parallel structure is connected with a plurality of diaphragm capsules in parallel to form parallel fluid channels which are in and out at the same time, and the serial structure is connected with a plurality of diaphragm capsules in series to form serial fluid channels which are in one-way serial circulation.

As shown in fig. 6, the first fluid valve

seat inlet holes

211, 212 and the first fluid mixing

valve seat outlets

231, 232 are arranged in a two-set parallel configuration, and after the second fluid valve seat inlet hole 221 and the series channel inlet hole 241 are arranged in a two-hole series connection configuration, the fluids formed in the mixing chamber 23 are mixed corresponding to the second fluid mixing valve seat outlet 233 and the first fluid mixing

valve seat outlets

231, 232.

As shown in fig. 4 and 5, the first fluid

seat inlet orifices

211, 212, the second fluid seat inlet orifice 221, and the series passage inlet orifice 241 are each provided with an umbrella check valve 121.

As shown in fig. 4 and 5, the first fluid mixing

valve seat outlets

231, 232 and the second fluid mixing valve seat outlet 233 are provided with the check valve plate 122.

As shown in fig. 4 and 5, the fluid travel diagrams are the first fluid is water, the second fluid is air, the direction shown by the solid arrows is the direction of the water, and the direction shown by the dashed arrows is the direction of the air. Water enters the first fluid chamber 21 from the first fluid inlet 15 of the diaphragm pump cover plate 11, passes through the umbrella-shaped check valves of the first fluid valve

seat inlet holes

211 and 212 of the valve seat 12, enters the two first fluid diaphragm bags 1311, is pushed into the mixed fluid outlet chamber 23 from the first fluid mixing

valve seat outlets

231 and 232 after being sucked by the diaphragm, and the two first fluid diaphragm bags 1311 form a parallel connection structure with the inlet and the outlet; air enters the second fluid chamber 22 from a second fluid inlet 16 (which may be generally configured as a small air inlet) of the diaphragm pump cover plate 11, enters one of the second fluid separation bladders 1312 from the second fluid valve seat inlet hole 221, passes through the series channel outlet 242, flows through the series channel chamber 24, enters the second fluid separation bladder 1313 from the series channel inlet hole 241, and then enters the mixed fluid outlet chamber 23 from the second fluid mixing valve seat outlet 233, so as to form a series connection structure of the two second

fluid separation bladders

1312 and 1313; effective mixing of air and water is achieved. Because of the difference in specific gravity and density between water and air, a certain pressure, especially the atmospheric pressure of air, is generally required to mix air into water to achieve the effect of mixing water and air. In the invention, the water uses a parallel structure to increase the flow, and the air uses a serial structure to increase the air pressure, thereby achieving good mixing effect.

As shown in fig. 2, a diaphragm pump comprises an outlet cover plate 11, a valve seat 12, a diaphragm device 13 and a driving device 14, the outlet cover plate 11 is provided with a first fluid inlet 15, a second fluid inlet 16 and a mixed fluid outlet 17, the diaphragm device 13 comprises a plurality of first fluid diaphragm capsules 1311 and second

fluid diaphragm capsules

1312, 1313 and a diaphragm seat 132 correspondingly fitted with the diaphragm, a first fluid inlet chamber 21, a second fluid inlet chamber 22 and a mixed fluid outlet chamber 23 formed by snap-sealing the cover plate 11 and the valve seat 12, the first fluid inlet chamber 21 being provided with a plurality of first fluid valve

seat inlet holes

211, 212 respectively corresponding to first fluid mixed

valve seat outlets

231, 232 arranged in the mixed fluid outlet chamber 23, and the second fluid inlet chamber 22 being provided with a second fluid valve seat inlet hole 221 corresponding to a second fluid mixed valve seat outlet 233 arranged in the mixed fluid outlet chamber 23.

As shown in fig. 6-9, further comprising a series channel chamber 24 disposed within the second fluid inlet chamber 22, the first fluid valve

seat inlet orifices

211, 212 and the first fluid mixing

valve seat outlets

231, 232 are disposed to form and couple a number of first fluid membrane bladders 1311; the second fluid valve seat inlet orifice 221 is correspondingly communicated with the second fluid mixing valve seat outlet 233 through a series passage inlet orifice 241 provided in the series passage chamber 24, provided to form a series connection of several second

fluid diaphragm capsules

1312, 1313.

As shown in fig. 5, the first fluid valve

seat inlet ports

211, 212 and the first fluid mixing valve

seat outlet ports

231, 232 are arranged in two sets of parallel type arrangements connecting two first fluid membrane bladders 1311, the second fluid valve seat inlet port 221 and the series passage inlet port 241 are arranged in two ports in series connection type arrangements connecting two second

fluid membrane bladders

1312, 1313, corresponding to the second fluid mixing valve seat outlet port 233 and the first fluid mixing valve

seat outlet ports

231, 232, the fluids formed in the mixing chamber 23 are mixed.

As shown in fig. 5 and 6, the first fluid

seat inlet orifices

As shown in fig. 4 and 5, the first fluid mixing

valve seat outlets

And as shown in fig. 6-9, the fluid flow direction is schematic, the first fluid being water and the second fluid being air. In a relatively optimized design, the number of the membrane bags for water flow of the parallel channels is two, the number of the membrane bags for serial communication used by air for increasing air pressure is also two, the flow of water is increased in the parallel structure, and the serially communicated pressure-increasing air is better accommodated in the water with mixed large flow.

And, as shown in fig. 10, a micropump with series-parallel connection mixed fluid one-way valve structure, including an outlet cover plate 11, a valve seat 12, a diaphragm device 13 and a driving device 14, where the outlet cover plate 11 is provided with a first fluid inlet 15, a second fluid inlet 16 and a mixed fluid outlet 17, the cover plate 11 and the valve seat 12 are buckled and sealed to form a first fluid inlet chamber 21, a second fluid inlet chamber 22 and a mixed fluid outlet chamber 23, and is characterized in that the mixed fluid outlet chamber 23 is provided with a first fluid mixed

valve seat outlet

231, 232 corresponding to the first fluid parallel connection and a second fluid mixed valve seat outlet 233 corresponding to the second fluid serial connection, which are mixed by fluid, and a valve sheet 121 correspondingly provided in a matching manner.

The aperture D2 of the first fluid mixing

seat outlet

231, 232 is larger than the aperture D1 of the second fluid mixing seat outlet 233. The small aperture forms a large fluid pressure, the mixing of air requires a large gas pressure, however, the viscosity of gas and liquid is different, and the aperture of water needs to be properly large to prevent the valve diaphragm from being bonded with the valve seat outlet platform to cause flow control errors.

As shown in fig. 10, the second fluid mixing seat outlet 233 is disposed with a distance L1 between the two circular rings in the plane of the annular lip that is greater than the distance L2 between the two circular rings in the plane of the annular lip of the first fluid mixing

seat outlets

231, 232. Two different annular convex lip platform surfaces are formed, so that the transverse distance between the two different annular convex lip platform surfaces and the plane of the contact boss of the valve plate is different, and the opening force for opening the valve plate is determined by the distance of the contact surface, namely different pressures of formed fluid are determined.

The above is one embodiment of the present invention. Furthermore, it should be noted that all equivalent or simple changes made by the structures, characteristics and principles described in the patent conception are included in the protection scope of the patent.

Claims

1. A series-parallel mixed fluid channel module comprises a cover plate (11) and a valve seat (12), and a first fluid inlet (15), a second fluid inlet (16) and a mixed fluid outlet (17) which are formed on the cover plate (11), it is characterized by also comprising a first fluid inlet cavity (21), a second fluid inlet cavity (22) and a mixed fluid outlet cavity (23) which are arranged in the inner cavity of the fluid passage module and are formed by buckling and sealing a cover plate (11) and a valve seat (12), the first fluid inlet chamber (21) is provided with a plurality of first fluid valve seat inlet holes (211, 212) which respectively correspond to first fluid mixing valve seat outlets (231, 232) arranged in the mixed fluid outlet chamber (23), the second fluid inlet chamber (22) is provided with a second fluid valve seat inlet hole (221) corresponding to a second fluid mixing valve seat outlet (233) provided in the mixed fluid outlet chamber (23);

2. A series-parallel hybrid fluid channel module according to claim 1, wherein the first fluid valve seat inlet ports (211, 212) and the first fluid mixing valve seat outlet ports (231, 232) are arranged in a two-set parallel configuration, and the second fluid valve seat inlet port (221) and the series channel inlet port (241) are arranged in a two-hole series configuration, and then the fluid mixing in the mixing chamber (23) is formed corresponding to the second fluid mixing valve seat outlet port (233) and the first fluid mixing valve seat outlet port (231, 232).

3. A series-parallel hybrid fluid channel module according to claim 1, wherein the first fluid seat inlet port (211, 212), the second fluid seat inlet port (221), and the series channel inlet port (241) are each provided with an umbrella check valve (121).

4. A series-parallel mixed fluid channel module according to claim 1, wherein the first fluid mixing valve seat outlet (231, 232) and the second fluid mixing valve seat outlet (233) are provided with check valve plates (122).

5. The series-parallel hybrid fluid channel module of claim 1, wherein the first fluid is water and the second fluid is air.

6. A diaphragm pump comprising an outlet cover plate (11), a valve seat (12), a diaphragm device (13) and a driving device (14), wherein the outlet cover plate (11) is provided with a first fluid inlet (15), a second fluid inlet (16) and a mixed fluid outlet (17), the diaphragm device (13) comprises a diaphragm (131) provided with a plurality of first fluid diaphragm capsules (1311) and second fluid diaphragm capsules (1312, 1313) and a diaphragm seat (132) correspondingly provided with the diaphragm, and is characterized in that the first fluid inlet chamber (21), the second fluid inlet chamber (22) and the mixed fluid outlet chamber (23) are formed by buckling and sealing the cover plate (11) and the valve seat (12), and the first fluid inlet chamber (21) is provided with a plurality of first fluid inlet holes (211, 212) respectively corresponding to a first fluid mixed valve seat outlet (231, 212) arranged in the mixed fluid outlet chamber (23) 232) -said second fluid inlet chamber (22) is provided with a second fluid valve seat inlet orifice (221) corresponding to a second fluid mixing valve seat outlet orifice (233) provided in said mixed fluid outlet chamber (23);

7. A diaphragm pump according to claim 6, characterized in that the first fluid valve seat inlet port (211, 212) and the first fluid mixing valve seat outlet port (231, 232) are arranged as two sets of parallel connecting structures connecting two first fluid membrane bladders (1311), and the second fluid valve seat inlet port (221) and the series channel inlet port (241) are arranged as two ports in series connecting structures connecting two second fluid membrane bladders (1312, 1313), corresponding to the second fluid mixing valve seat outlet port (233) and the first fluid mixing valve seat outlet port (231, 232), forming a mixing of the fluids in the mixing chamber (23).

8. A diaphragm pump according to claim 6, characterized in that the first fluid seat inlet port (211, 212), the second fluid seat inlet port (221), the series passage inlet port (241) are provided with an umbrella check valve (121).

9. A membrane pump according to claim 6, characterized in that the first fluid mixing valve seat outlet (231, 232) and the second fluid mixing valve seat outlet (233) are provided with a check valve plate (122).

10. A diaphragm pump according to claim 6, wherein said first fluid is water and said second fluid is air.