CN217042128U

CN217042128U - Liquid mixing valveless piezoelectric pump

Info

Publication number: CN217042128U
Application number: CN202123090398.7U
Authority: CN
Inventors: 谢煜喆; 陈凤; 李垚; 迟俊康; 刘焕伟; 胡彩旗
Original assignee: Qingdao Agricultural University
Current assignee: Qingdao Agricultural University
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-26
Anticipated expiration: 2031-12-09

Abstract

A liquid mixing valveless piezoelectric pump comprising: the pump body is provided with a pump cavity; the piezoelectric vibrator is arranged in the pump cavity; the liquid inlet pipe is arranged at one end of the pump body and is provided with at least two liquid inlets; the liquid outlet pipe is arranged at the other end of the pump body; the mixing assembly is disposed in the pump chamber and has a necked-in space disposed axially along the pump chamber. The embodiment of the utility model provides an in through the binding off space that the subassembly formed that mixes in the pump chamber, make the fluid in the pump chamber in-process that flows axially, can assemble to the middle part to intensive mixing makes valveless piezoelectric pump can realize the function of liquid mixture, has solved the problem that current valveless piezoelectric pump does not have fluid mixing function.

Description

Liquid mixing valveless piezoelectric pump

Technical Field

The utility model belongs to the technical field of the pumping machinery, especially, relate to a mix liquid valveless piezoelectric pump.

Background

A valveless piezoelectric pump is an emerging fluid conveying device in recent years, and has the advantages of small volume, low energy consumption, accurate flow control and the like. However, the existing valveless piezoelectric pump is mainly a single-phase fluid transportation device, does not have the function of mixing two-phase fluids, and limits the application of the pump in the fields of drip irrigation, chemical flower thinning, water and fertilizer integration and the like.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the correlation technique, the utility model provides a mix liquid valveless piezoelectric pump to solve current valveless piezoelectric pump and do not have the problem of fluid mixing function.

The utility model provides a mix liquid valveless piezoelectric pump, include:

the pump body is provided with a pump cavity;

a piezoelectric vibrator installed in the pump chamber;

the liquid inlet pipe is arranged at one end of the pump body and is provided with at least two liquid inlets;

the liquid outlet pipe is arranged at the other end of the pump body;

and the mixing assembly is arranged in the pump cavity and is provided with a closing-in space arranged along the axial direction of the pump cavity.

According to the technical scheme, liquid is converged and mixed through the closing-in space, and the fluid mixing function is realized on the valveless piezoelectric pump.

In some of these embodiments, the mixing assembly comprises:

the two flow guide pieces are arranged at intervals to form a closing-in space.

This technical scheme forms binding off space, simple structure through the water conservancy diversion spare that the interval set up.

In some embodiments, the flow guide member is obliquely arranged close to one side surface of the liquid inlet pipe. According to the technical scheme, the closing-up space is formed by the inclined surface on one side of the flow guide piece.

In some embodiments, a side surface of the flow guide member near the liquid outlet pipe is obliquely arranged so as to form a flow space between the flow guide member and the inner wall of the pump cavity. This technical scheme is through forming the space that liquid can the whirl with water conservancy diversion spare opposite side slope, increases the mixing ability of liquid.

In some embodiments, the mixing assembly is provided in plurality at intervals along the axial direction of the pump body. The technical scheme ensures that the liquid is gathered for a plurality of times and fully mixed in the axial flow process in the pump body.

In some of these embodiments, one mixing assembly is rotated 90 degrees on the axis of the pump body relative to the adjacent other mixing assembly. This technical scheme makes the liquid can the multi-angle in the pump body converge, improves mixed effect.

In some embodiments, the piezoelectric vibrator penetrates into the closing-in space, and the left side and the right side of the piezoelectric vibrator are respectively positioned in the accommodating grooves formed in the corresponding flow guide pieces. This technical scheme makes mixing assembly can be closer to the piezoelectric vibrator more, increases the disturbance to assembling the fluid to further reinforcing stirring effect.

In some embodiments, the method further comprises:

the end seat is arranged at the end part of the pump cavity;

the support is arranged on the end seat and extends along the axial direction, and the mixing component is arranged on the support.

This technical scheme is through installing hybrid module on the support to be convenient for dismantle, realize hybrid module's change.

In some of these embodiments, the bracket has two, its outer side surfaces each resting against the inner wall of the pump chamber, and its inner side surfaces parallel to each other. The technical scheme ensures that a straight flowing space is formed between the two brackets, increases the convergence of fluid and improves the pumping and mixing functions.

In some embodiments, the two flow guides of the mixing assembly are mounted on respective brackets. This technical scheme realizes the assembly of hybrid module and support.

Based on the technical scheme, the embodiment of the utility model provides an in-process that makes the fluid flow axially in the pump chamber through the binding off space that the subassembly formed in the pump chamber can assemble to the middle part to intensive mixing makes valveless piezoelectric pump can realize the function of liquid mixing, has solved the problem that current valveless piezoelectric pump does not have fluid mixing function.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of a liquid mixing valveless piezoelectric pump according to the present invention;

fig. 2 is a first cross-sectional structural view of the liquid-mixing valveless piezoelectric pump of the present invention;

fig. 3 is a second sectional structure diagram of the liquid-mixing valveless piezoelectric pump of the present invention;

fig. 4 is a third sectional structural view of the liquid mixing valveless piezoelectric pump of the present invention;

fig. 5 is a schematic structural view of a mixing component in the liquid-mixing valveless piezoelectric pump according to the present invention;

in the figure:

1. a pump body; 11. a pump chamber;

2. a piezoelectric vibrator;

3. a liquid inlet pipe; 31. a branch pipe; 32. a liquid inlet;

4. a liquid outlet pipe; 41. a liquid outlet;

5. a mixing assembly; 51. closing in space; 52. a flow guide member; 53. a flow space; 54. accommodating a tank;

6. an end seat; 61. a communication port;

7. and (4) a bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, in an exemplary embodiment of the present invention, the liquid mixing valveless piezoelectric pump includes a pump body 1, a piezoelectric vibrator 2, a liquid inlet pipe 3, a liquid outlet pipe 4, and a mixing component 5.

The pump body 1 is provided with a pump cavity 11, and the piezoelectric vibrator 2 is arranged on the pump body 1, positioned in the pump cavity 11 and arranged along the axial direction. One end of the liquid inlet pipe 3 is connected with the front end of the pump body 1, the other end is provided with at least two branch pipes 31, and the ports of the branch pipes 31 are used as liquid inlets 32. One end of the liquid outlet pipe 4 is connected with the rear end of the pump body 1, and the other end of the liquid outlet pipe is used as a liquid outlet 41. The mixing assembly 5 is disposed within the pump chamber 11 and has an axially disposed necked-in space 51.

The piezoelectric vibrator 2 which is electrified to operate stirs the fluid in the pump body 1, so that the fluid flows from front to back and is pumped out through the liquid outlet pipe 4. The pumping out of the fluid creates a negative pressure in the pump chamber 11, and new fluid is sucked into the pump chamber 11 through the inlet pipe 3. The plural fluids enter the corresponding branch pipes 31 through the corresponding liquid inlets 32, are mixed in the liquid inlet pipes 3, flow into the pump chamber 11 together, and flow from front to back in the pump chamber 11. When the mixed fluid flows through the closing-in space 51 of the mixing module 5, the width of the closing-in space 51 is smaller and smaller, so that the mixed fluid is converged, thereby performing sufficient mixing. In addition, two of the fluids flowing in the pump chamber 11 flow against the surfaces of the two sides of the mixing component 5, and generate mutual impact at the port at the rear end of the closing space 51, that is, one fluid impacts the other fluid laterally, so as to generate a certain degree of fluid hedging, and the fluids are mixed sufficiently.

In the above exemplary embodiment, the liquid-mixing valveless piezoelectric pump enables a plurality of fluids to be converged towards the middle after flowing into the pump body 1 through the closing space 51 of the mixing component 5, and generates a certain degree of hedging, so as to achieve sufficient mixing, realize the function of fluid mixing, and solve the problem that the prior valveless piezoelectric pump has no fluid mixing function.

In some embodiments, to form the mouth-space 51, the mixing assembly 5 comprises two flow guides 52, as shown in fig. 2 to 4. The two flow guides 52 are spaced apart, and the space between them serves as a closing space 51.

In some embodiments, as shown in fig. 2 to 4, the flow guide 52 is obliquely disposed near one side surface of the liquid inlet pipe 3, that is, the surface of the front side of the flow guide 52 is inclined with respect to the axis of the pump body 1, so that the space between the flow guides 52 is gradually narrowed from front to back. The surface of the front side of the flow guide piece 52 is a plane or an arc surface, so that the closing space is V-shaped or U-shaped, the fluid can be converged, and the fluid flowing along the wall can form opposite impact.

In some embodiments, as shown in fig. 3 to 4, the flow guide 52 is disposed obliquely near one side surface of the outlet pipe 4, i.e., the surface on the rear side of the flow guide 52 is inclined with respect to the axis of the pump body 1, so that a flow space 53 is formed between the flow guide 52 and the inner wall of the pump chamber 11. A part of the fluid flowing from front to back in the pump body 1 collides with the rear end of the pump cavity 1 and flows back forward while adhering to the wall, and the returned fluid flows into the flow space 53 and flows against the rear side surface of the flow guide body 52, so that the fluid is guided to flow back again, and a rotational flow is formed in the flow space 52, so that the fluid can be sufficiently mixed and is pumped out toward the liquid outlet pipe 4. When the rear side surface of the flow guide 52 is perpendicular to the inner wall of the pump chamber 11, the forward and backward flowing fluid can be guided by the rear side surface of the flow guide 52 to flow radially toward the center of the pump chamber 11, and a swirling flow can be formed at the rear side of the flow guide 52 and can be merged into the backward flowing fluid, so that the fluid can be sufficiently mixed and can be pumped out through the liquid outlet pipe 4 as shown in fig. 2.

In some embodiments, in order to further improve the fluid mixing effect, the mixing assembly 5 is provided in plurality at intervals along the axial direction of the pump body 1. The fluid passes through the plurality of converging spaces 51 during the forward and backward flow in the pump chamber 11, thereby ensuring thorough mixing of the fluid through a plurality of times of convergence and impact of the fluid.

In some embodiments, as shown in fig. 4 to 5, one mixing assembly 5 is rotated 90 degrees on the axis of the pump body 1 with respect to the adjacent other mixing assembly 5. If the diversion piece 52 of one mixing component 5 is arranged up and down, and the diversion piece 52 of the other mixing component 5 adjacent to the rear side is arranged left and right, the mixing components 5 sequentially converge the fluid up and down and right and left, and the fluid at each position in the radial direction of the pump body 1 can be converged to the center, so that the fluid mixing effect is improved.

In some embodiments, in order to make the whole structure more compact, the piezoelectric vibrator 2 penetrates into the necking space 51, so that the two flow guides 52 of the mixing component 5 are respectively located at two sides of the piezoelectric vibrator 2. The piezoelectric vibrator 2 is shifted in the closing space 51 to directly stir the converged fluid, thereby accelerating the mixing of the fluid. Because the water conservancy diversion spare 52 of partial hybrid module 5 is for controlling the setting, and piezoelectric vibrator 2 is the slice moreover, when piezoelectric vibrator 2 level set up, the holding tank 54 has been seted up to the water conservancy diversion spare 52 of controlling the setting, and piezoelectric vibrator 2's the left and right sides all extends to in the holding tank 54 to the width of the pump body 1 has been reduced.

In some embodiments, to facilitate installation and removal of the mixing assembly 5, the liquid mixing valveless piezoelectric pump further comprises an end seat 6 and a bracket 7. The end seat 6 is mounted at the end of the pump chamber so as to avoid blocking the flow of fluid in the pump chamber 11. When the end seat 6 is positioned at the rear end of the pump cavity 11, the communication port 61 arranged on the end seat 6 is communicated with the liquid outlet pipe 4; when the end seat 6 is located at the front end of the pump cavity 11, the communicating opening 61 formed on the end seat 6 is communicated with the liquid inlet pipe 3. The support 7 is arranged on the end seat 6 and extends along the axial direction, the mixing component 5 is arranged on the support 7, and the support 7 fixes the mixing component 5. Support 7 and end seat 6 constitute the mounting bracket, when the mixed subassembly 5 of different shapes, specification is changed to needs, opens 1 one end of the pump body, can wholly take the mounting bracket out to pull out mixed subassembly 5 from pump chamber 11, pack into the mounting bracket that has required specification mixed subassembly 5, can accomplish the change.

In some embodiments, the two brackets 7 have outer side surfaces which are attached to the inner wall of the pump cavity 11, and inner side surfaces which are parallel to each other, so as to form a flow channel with two flat sides in the axial direction, so that the flow of the fluid is more concentrated around the piezoelectric vibrator 2, the sweeping effect of the piezoelectric vibrator 2 is increased, the flow rate of the fluid is increased, the confluence of the fluid in the close-up space 51 is enhanced, and the pumping efficiency and the mixing efficiency are improved.

In some embodiments, the two flow guiding members 52 of the mixing assembly 5 are respectively mounted on the corresponding brackets 7, and the two brackets 7 respectively mount and fix the two flow guiding members 52 of the mixing assembly 5, so that the flow guiding members 52 are spaced apart to maintain the stable closing space 51.

Finally, it should be noted that: in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the technical solution of the present invention, the present invention should be covered by the technical solution of the present invention.

Claims

1. A liquid mixing valveless piezoelectric pump is characterized by comprising:

the pump body is provided with a pump cavity;

a piezoelectric vibrator installed in the pump chamber;

the liquid outlet pipe is arranged at the other end of the pump body;

and the mixing assembly is arranged in the pump cavity and is provided with a closing-in space which is arranged along the axial direction of the pump cavity.

2. The liquid mixing valveless piezoelectric pump according to claim 1, wherein the mixing assembly comprises:

the two flow guide pieces are arranged at intervals and used for forming a closing-up space.

3. A liquid mixing valveless piezoelectric pump according to claim 2, wherein the flow guide member is obliquely arranged close to one side surface of the liquid inlet pipe.

4. A liquid mixing valveless piezoelectric pump according to claim 3, wherein a side surface of the flow guide member adjacent to the liquid outlet pipe is inclined to form a flow space between the flow guide member and an inner wall of the pump chamber.

5. A liquid mixing valveless piezoelectric pump according to any one of claims 2 to 4, wherein the mixing assembly is provided in plurality at intervals along the axial direction of the pump body.

6. A liquid mixing valveless piezoelectric pump according to claim 5, wherein one mixing assembly is rotated 90 degrees on the axis of the pump body relative to the adjacent other mixing assembly.

7. The liquid mixing valveless piezoelectric pump according to claim 6, wherein the piezoelectric vibrator penetrates into the closing-in space, and the left side and the right side of the piezoelectric vibrator are respectively positioned in accommodating grooves formed in the corresponding flow guide pieces.

8. The liquid mixing valveless piezoelectric pump according to claim 1, further comprising:

the end seat is arranged at the end part of the pump cavity;

9. A liquid mixing valveless piezoelectric pump according to claim 8, wherein the bracket has two outer surfaces each abutting against an inner wall of the pump chamber and inner surfaces parallel to each other.

10. A liquid mixing valveless piezoelectric pump according to claim 9, wherein the two flow guides of the mixing assembly are respectively mounted on the corresponding brackets.