CN215463401U - Miniature liquid mixing pump - Google Patents

Abstract

The utility model provides a miniature liquid mixing pump, which comprises an outer shell, the flexible glue valve frame, a plurality of leather cups, the leather cup support, eccentric pendulum and motor, space between flexible glue valve frame and shell forms intake antrum and goes out the water cavity, be provided with first pair of water inlet and delivery port on the shell, and second pair of water inlet and delivery port, the intake antrum includes first intake antrum and the second intake antrum of separated, it goes out the water cavity including first play water cavity and the second of separated, the volume ratio of first intake antrum and second intake antrum is the same with the volume ratio of first play water cavity and the second play water cavity, many pairs of water intaking valve and outlet valve and a plurality of leather cups one-to-one setting on the flexible glue valve frame, eccentric pendulum is by the rotatory extrusion of motor drive makes the compression release of leather cups, accomplish imbibition and drawing liquid with water intaking valve and outlet valve cooperation. The miniature liquid mixing pump well realizes the accurate and instant proportioning liquid mixing function of a small-volume water pump, and ensures the liquid mixing advantages that different solutions are synchronous with the pump but do not leak or interfere with each other.

Description

Miniature liquid mixing pump

Technical Field

The utility model relates to a precise high-speed proportioning liquid mixing technology, in particular to a miniature liquid mixing pump.

Background

At present, most of proportional liquid mixing structures in the market are complex, for example, large-scale factories realize accurate proportioning at low speed by connecting different water pumps in parallel to a stirring pool and by combining a parallel plunger pump and a proportional control valve in a liquid chromatograph. In the face of the demand of proportioning and mixing in the field of small medical instruments or small household appliances, a liquid mixing pump which is suitable for proportioning and mixing liquid accurately and at high speed in a small space is needed to be provided.

It is to be noted that the information disclosed in the above background section is only for understanding the background of the present application and thus may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The main purpose of the present invention is to overcome the above mentioned drawbacks of the background art and to provide a micro liquid mixing pump.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a miniature liquid mixing pump comprises a shell, a soft rubber valve frame, a plurality of leather cups, a leather cup support, an eccentric pendulum and a motor, wherein the soft rubber valve frame, the leather cups, the leather cup support and the eccentric pendulum are arranged in the shell, the soft rubber valve frame is arranged on the upper portion of the shell, a water inlet cavity and a water outlet cavity are formed in the space between the soft rubber valve frame and the shell, a first pair of water inlet and water outlet and a second pair of water inlet and water outlet are arranged on the shell, the water inlet cavity comprises a first water inlet cavity and a second water inlet cavity which are separated from each other, the water outlet cavity comprises a first water outlet cavity and a second water outlet cavity which are separated from each other, the volume ratio of the first water inlet cavity to the second water inlet cavity is the same as the volume ratio of the first water outlet cavity to the second water outlet cavity, and the first water inlet cavity and the first water outlet cavity are respectively connected with the water inlet cavity and the first water outlet cavity, the second pair of water inlets and the water outlets are respectively connected with the second water inlet cavity and the second water outlet cavity, a pair of water inlet valves and water outlet valves are arranged on the soft rubber valve frame corresponding to the first water inlet cavity and the first water outlet cavity, a plurality of pairs of water inlet valves and water outlet valves are arranged on the second water inlet cavity and the second water outlet cavity, each pair of water inlet valves and water outlet valves and the plurality of leather cups are arranged in one-to-one correspondence, the plurality of leather cups are arranged on the leather cup support, the motor is coupled to the eccentric pendulum bob, the eccentric pendulum bob is coupled to the plurality of leather cups, the motor drives the eccentric pendulum bob to rotate and extrude to enable the leather cups to be compressed and released, and the eccentric pendulum bob is matched with the water inlet valves and the water outlet valves to complete liquid suction and liquid suction.

Further:

the shell comprises a top cover which is detachably mounted, the first pair of water inlet and water outlet and the second pair of water inlet and water outlet are arranged on the top cover, and the water inlet cavity and the water outlet cavity are arranged between the inner surface of the top cover and the soft rubber valve frame.

The retaining wall is arranged on the inner surface of the top cover in a protruding mode, the retaining wall is pressed on the soft rubber valve frame, and the retaining wall enables the inner surface of the top cover and the space between the soft rubber valve frame to be divided into the first water inlet cavity, the second water inlet cavity, the first water outlet cavity and the second water outlet cavity.

The barricade includes business turn over water cavity separation barricade and isolation barricade, business turn over water cavity separation barricade will the internal surface of top cap with space separation between the flexible glue valve frame is the intake antrum with go out the water cavity, it will to keep apart the barricade the intake antrum is separated for first intake antrum with the second intake antrum, will it separates for to go out the water cavity first go out the water cavity with the second goes out the water cavity.

The structures of the first water inlet cavity and the first water outlet cavity corresponding to the pair of water inlet valves and the water outlet valves and the structures of the second water inlet cavity and the second water outlet cavity corresponding to the plurality of pairs of water inlet valves and the water outlet valves are symmetrically distributed on the top cover.

The business turn over water cavity separation barricade will the intake antrum encloses at central zone, it sets up to go out the water cavity business turn over water cavity separation barricade's periphery, centers on the intake antrum.

Keep apart the barricade and include by the center extend to first flange and the second flange at the edge of overhead lid, first flange with the inboard region that the second flange pressed from both sides forms first intake antrum with first play water cavity, the second intake antrum with the second goes out the water cavity and forms first flange with the outside region of second flange.

The volume ratio of the first water inlet cavity to the second water inlet cavity and the volume ratio of the first water outlet cavity to the second water outlet cavity are 1: n, the volumes of the leather cups are the same, the number of the water inlet valves, the water outlet valves and the leather cups is N +1, and N is larger than or equal to 1.

The whole of the shell is square, and N is 3.

Still include the baffle, the flexible glue valve bracket is located keep apart the barricade with between the baffle, keep apart the barricade with the baffle compresses tightly from both sides the flexible glue valve bracket.

The utility model has the following beneficial effects:

the miniature liquid mixing pump structure is particularly suitable for realizing accurate proportioning liquid mixing under the high-speed flow requirement of a tiny space, and the miniature diaphragm pump structure is improved, a plurality of leather cups and a plurality of water inlets and water outlets are arranged for separation and obstruction, and different liquids are proportionally pumped out in the same motor rotation period to realize accurate proportional liquid mixing. The utility model can solve the technical problem of accurate proportional mixing of liquids in micro medical instruments or household appliances, and ensures the accuracy of the liquid outlet proportion under the same rotation period of the motor by grouping and controlling the water outlet of the cup of the micro diaphragm pump.

Compared with the traditional liquid mixing pump, the utility model well realizes the accurate and instant liquid mixing function of the small-volume water pump, wherein the water inlet cavity and the water outlet cavity are arranged in a split way, so that the advantages of synchronous pump and non-leakage and non-interference liquid mixing of different solutions are ensured, the assembly is convenient, and the mass production is high.

Drawings

Fig. 1 is a schematic external structural view of a micro fluid mixing pump according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a micro fluid mixing pump according to an embodiment of the present invention.

Fig. 3 is a partially exploded schematic view of a micro fluid mixing pump according to an embodiment of the present invention.

Fig. 4 is a schematic view of an inner side structure of a top cover of the micro liquid mixing pump according to an embodiment of the utility model.

FIG. 5 is a perspective view of a top cover of the micro fluid mixing pump according to an embodiment of the present invention.

FIG. 6 is an exploded view of a micro fluid mixing pump separated into two different volumes according to one embodiment of the present invention.

FIG. 7 is a top view of a micro fluid mixing pump according to one embodiment of the present invention.

FIG. 8 is a cross-sectional view X1-X1 of the micro fluid mixing pump of FIG. 7.

Detailed Description

The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the utility model or its application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed or coupled or communicating function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 8, an embodiment of the present invention provides a micro liquid mixing pump, including a housing, a soft rubber valve frame 7, a plurality of leather cups 9, a leather cup support 10, an eccentric pendulum 13, and a motor 12, where the soft rubber valve frame 7, the leather cups 9, the leather cup support 10, and the eccentric pendulum 13 are disposed in the housing, the soft rubber valve frame 7 is disposed at an upper portion of the housing, a water inlet cavity and a water outlet cavity are formed in a space between the soft rubber valve frame 7 and the housing, the housing is provided with a first pair of water inlet 2 and a water outlet 1, and a second pair of water inlet 4 and a water outlet 3, the water inlet cavity includes a first separated water inlet cavity 14 and a second separated water inlet cavity 18, the water outlet cavity includes a first separated water outlet cavity 15 and a second separated water outlet cavity 17, a volume ratio of the first water inlet cavity 14 and the second water inlet cavity 18 is the same as a volume ratio of the first water outlet cavity 15 and the second water outlet cavity 17, the first pair of water inlets 2 and the water outlets 1 are respectively connected with the first water inlet cavity 14 and the first water outlet cavity 15, the second pair of water inlets 4 and the water outlets 3 are respectively connected with the second water inlet cavity 18 and the second water outlet cavity 17, a pair of water inlet valves 21 and water outlet valves 22 are arranged on the soft rubber valve frame 7 corresponding to the first water inlet cavity 14 and the first water outlet cavity 15, a plurality of pairs of water inlet valves 21 and water outlet valves 22 are arranged corresponding to the second water inlet cavity 18 and the second water outlet cavity 17, wherein each pair of water inlet valve 21 and water outlet valve 22 is arranged corresponding to the plurality of leather cups 9 one by one, the plurality of leather cups 9 are mounted on the leather cup frame 10, the motor 12 is coupled to the eccentric pendulum 13, the eccentric pendulum 13 is coupled to the plurality of leather cups 9, the motor 12 drives the eccentric pendulum 13 to rotate and extrude so that the leather cups 9 are compressed and released, and the liquid sucking and liquid extracting are completed by matching with the water inlet valve 21 and the water outlet valve 22, wherein two different liquids are respectively sucked out in proportion through the first pair of water inlets 2 and the water outlets 1 and the second pair of water inlets 4 and the water outlets 3 in the same rotation period of the motor 12, so that the precise proportional mixing of the two liquids is realized.

As shown in fig. 2 to 5, in a preferred embodiment, the housing includes a top cover 6 detachably mounted, the first pair of water inlet 2 and water outlet 1 and the second pair of water inlet 4 and water outlet 3 are disposed on the top cover 6, and the water inlet cavity and the water outlet cavity are disposed between the inner surface of the top cover 6 and the soft rubber valve frame 7.

In some embodiments, a fill valve post 19 may be provided on the inner surface of the top cover 6 to cooperate with the valve plate of the fill valve.

As shown in fig. 2 to 6, in a preferred embodiment, a retaining wall protrudes from the inner surface of the top cover 6, the retaining wall is pressed on the soft rubber valve frame 7, and the retaining wall divides the space between the inner surface of the top cover 6 and the soft rubber valve frame 7 into the first water inlet chamber 14, the second water inlet chamber 18, the first water outlet chamber 15 and the second water outlet chamber 17.

In the preferred embodiment, the barricade includes business turn over water cavity separation barricade 20 and keeps apart barricade 16, business turn over water cavity separation barricade 20 with the internal surface of top cap 6 with the space separation between the flexible glue valve frame 7 is the intake antrum with go out the water cavity, keep apart barricade 16 with the intake antrum is separated for first intake antrum 14 with second intake antrum 18, and will it separates for to go out the water cavity first go out water cavity 15 with second goes out water cavity 17.

In a preferred embodiment, the structure of the first inlet chamber 14 and the first outlet chamber 15 corresponding to the pair of inlet valves 21 and outlet valves 22, and the structure of the second inlet chamber 18 and the second outlet chamber 17 corresponding to the plurality of pairs of inlet valves 21 and outlet valves 22 are symmetrically distributed on the top cover 6.

In a preferred embodiment, the inlet cavity is enclosed by the inlet and outlet cavity separating walls 20 in a central area, and the outlet cavity is disposed at the periphery of the inlet and outlet cavity separating walls 20 and surrounds the inlet cavity.

In a preferred embodiment, the isolation retaining wall 16 comprises a first rib and a second rib extending from the center to the edge of the top cover 6, the inner region sandwiched by the first rib and the second rib forms the first inlet chamber 14 and the first outlet chamber 15, and the second inlet chamber 18 and the second outlet chamber 17 form the outer region of the first rib and the second rib.

In a preferred embodiment, the volume ratio of the first inlet chamber 14 to the second inlet chamber 18 and the volume ratio of the first outlet chamber 15 to the second outlet chamber 17 are 1: n, the volumes of the leather cups 9 are the same, the number of the water inlet valves 21, the water outlet valves 22 and the leather cups 9 is N +1, and N is more than or equal to 1. It is understood that when N is 1, the micro-fluid pump is 1: 1 equal proportion mixing liquid pump, when N is more than 1, the micro mixing liquid pump is unequal proportion mixing liquid pump.

In a preferred embodiment, the whole of the housing is square, and N is 3.

In a preferred embodiment, the micro liquid mixing pump further comprises a partition plate 8, the soft rubber valve frame 7 is located between the isolation retaining wall 16 and the partition plate 8, and the isolation retaining wall 16 and the partition plate 8 compress the soft rubber valve frame 7 from two sides.

Specific embodiments of the present invention are further described below.

As shown in fig. 1 to 8, the micro liquid mixing pump of the embodiment includes a top cover 6, a soft rubber valve frame 7, a partition plate 8, a leather cup 9, an eccentric pendulum 13, and a bottom cover 11. The top cover 6 and the other parts can be assembled by screws 5. Wherein the top cover 6 is provided with a water inlet cavity and a water outlet cavity with 1 time of volume, a water inlet cavity and a water outlet cavity with 3 times of volume, and two pairs of water inlets and water outlets. Wherein the inlet chamber and the outlet chamber are divided into 1 to 3 volumes by the separation wall 16 and are integrally formed in a symmetrical structure. The water inlet cavity and the water outlet cavity with 1 time of volume correspond to a pair of water inlet valve 21 and a water outlet valve 22 on the soft rubber valve frame 7 and correspond to 1 leather cup 9. The 3 times volume of the water inlet cavity and the water outlet cavity correspond to the 3 pairs of the water inlet valve 21 and the water outlet valve 22 on the soft rubber valve frame 7 and correspond to the three leather cups 9 with equal volume. The isolation retaining wall 16 on the top cover 6 and the partition plate 8 are tightly pressed on the soft rubber valve frame 7 positioned in the middle to realize the sealing and the isolation of the 1:3 solution part, which is equivalent to the independent synchronous displacement pump with the displacement ratio of 1 and 3 which is obtained by dividing a water pump.

4 pairs of one-way water inlet valves 21 and one-way water outlet valves 22 are distributed on the soft rubber valve frame 7 and respectively correspond to 4 leather cups 9, each pair of valve plates is combined with the corresponding leather cup 9 and the eccentric pendulum bob 13 to form a micro-pump structure, the eccentric pendulum bob 13 rotates and extrudes to compress and release the leather cups 9, and the compression and the release of the leather cups are matched with the water inlet valves 21 and the water outlet valves 22 to finish water absorption and pumping.

The whole top cover 6 is divided into a water inlet cavity and a water outlet cavity by a water inlet and outlet cavity separating retaining wall 20, and single and triple water inlet and outlet cavities are divided according to the volume of 1:3 by a separating retaining wall 16. The pump is divided into four equal parts, wherein one part corresponds to one pair of water inlets and water outlets, and the other three parts correspond to the other pair of water inlets and water outlets.

The water flow path for the 1-volume configuration is shown in figure 3. The compressed and extruded rubber is compressed and extruded from a corresponding water inlet, passes through the first water inlet cavity 14, the one-way water inlet valve 21 on the soft rubber valve frame 7 and the corresponding leather cup 9, passes through the corresponding water outlet valve 22 on the soft rubber valve frame 7 and the first water outlet cavity 15, and finally flows out through a corresponding water outlet.

The water flow path of the 3-time volume structure is as follows: flows into the second water inlet cavity 18 through the corresponding water inlet, then flows to the corresponding leather cup 9 through the three one-way water inlet valves on the soft rubber valve frame 7, is compressed and extruded, then flows to the second water outlet cavity 17 through the corresponding water outlet valves on the soft rubber valve frame 7, and finally flows out through the corresponding water outlets.

Therefore, the micro liquid mixing pump can realize the instant proportioning of two paths of liquid according to the volume of 1: 3.

The manner of dividing the volume of the water inlet and outlet cavities is not limited to the 1:3 mode, and different proportions can be set by the leather cup 9 and the divided volume ratio.

The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.

The foregoing is a more detailed description of the utility model in connection with specific/preferred embodiments and is not intended to limit the practice of the utility model to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the utility model, and these substitutions and modifications should be considered to fall within the scope of the utility model. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.

Claims (10)

1. A miniature liquid mixing pump is characterized by comprising a shell, a soft rubber valve frame, a plurality of leather cups, a leather cup support, an eccentric pendulum and a motor, wherein the soft rubber valve frame, the leather cups, the leather cup support and the eccentric pendulum are arranged in the shell, the soft rubber valve frame is arranged on the upper portion of the shell, a water inlet cavity and a water outlet cavity are formed in the space between the soft rubber valve frame and the shell, a first pair of water inlet and water outlet and a second pair of water inlet and water outlet are arranged on the shell, the water inlet cavity comprises a first water inlet cavity and a second water inlet cavity which are separated from each other, the water outlet cavity comprises a first water outlet cavity and a second water outlet cavity which are separated from each other, the volume ratio of the first water inlet cavity to the second water inlet cavity is the same as the volume ratio of the first water outlet cavity to the second water outlet cavity, and the first pair of water inlet and the water outlet are respectively connected with the first water inlet cavity and the first water outlet cavity, the second pair of water inlets and the water outlets are respectively connected with the second water inlet cavity and the second water outlet cavity, a pair of water inlet valves and water outlet valves are arranged on the soft rubber valve frame corresponding to the first water inlet cavity and the first water outlet cavity, a plurality of pairs of water inlet valves and water outlet valves are arranged on the second water inlet cavity and the second water outlet cavity, each pair of water inlet valves and water outlet valves and the plurality of leather cups are arranged in one-to-one correspondence, the plurality of leather cups are arranged on the leather cup support, the motor is coupled to the eccentric pendulum bob, the eccentric pendulum bob is coupled to the plurality of leather cups, the motor drives the eccentric pendulum bob to rotate and extrude to enable the leather cups to be compressed and released, and the eccentric pendulum bob is matched with the water inlet valves and the water outlet valves to complete liquid suction and liquid suction.

2. The micro fluid mixing pump according to claim 1, wherein the housing includes a detachably mounted top cover, the first pair of water inlet and outlet and the second pair of water inlet and outlet are disposed on the top cover, and the water inlet chamber and the water outlet chamber are disposed between an inner surface of the top cover and the soft rubber valve frame.

3. The micro liquid mixing pump according to claim 2, wherein a retaining wall protrudes from the inner surface of the top cover, the retaining wall is pressed against the soft rubber valve frame, and the retaining wall divides the space between the inner surface of the top cover and the soft rubber valve frame into the first water inlet chamber, the second water inlet chamber, the first water outlet chamber and the second water outlet chamber.

4. The micro liquid mixing pump according to claim 3, wherein the retaining wall comprises a water inlet and outlet cavity separating retaining wall and a separating retaining wall, the water inlet and outlet cavity separating retaining wall separates the space between the inner surface of the top cover and the soft rubber valve frame into the water inlet cavity and the water outlet cavity, the separating retaining wall separates the water inlet cavity into the first water inlet cavity and the second water inlet cavity, and separates the water outlet cavity into the first water outlet cavity and the second water outlet cavity.

5. The micro mixing pump of claim 4, wherein the configuration of the first inlet chamber and the first outlet chamber corresponding to the pair of inlet and outlet valves and the configuration of the second inlet chamber and the second outlet chamber corresponding to the plurality of pairs of inlet and outlet valves are symmetrically distributed on the top cover.

6. The micro fluid mixing pump according to claim 5, wherein the inlet chamber is surrounded by the inlet and outlet chamber separation wall in a central region, and the outlet chamber is provided at a periphery of the inlet and outlet chamber separation wall so as to surround the inlet chamber.

7. The micro fluid mixing pump according to claim 6, wherein the separation wall comprises a first rib and a second rib extending from the center to the edge of the top cover, wherein the inner region sandwiched by the first rib and the second rib forms the first inlet chamber and the first outlet chamber, and the second inlet chamber and the second outlet chamber form the outer region of the first rib and the second rib.

8. The micro fluid mixing pump according to any one of claims 1 to 7, wherein the volume ratio of the first inlet chamber to the second inlet chamber and the volume ratio of the first outlet chamber to the second outlet chamber is 1: n, the volumes of the leather cups are the same, the number of the water inlet valves, the water outlet valves and the leather cups is N +1, and N is larger than or equal to 1.

9. The micro fluid mixing pump according to claim 8, wherein the housing is generally square, and wherein N is 3.

10. The micro liquid mixing pump according to any one of claims 4 to 7, further comprising a partition, wherein the soft rubber valve frame is located between the isolation retaining wall and the partition, and the isolation retaining wall and the partition press the soft rubber valve frame from two sides.

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