阅读说明：本技术 隔膜式微流控控制装置 (Diaphragm type micro-fluidic control device ) 是由 郑希有 于 2021-10-29 设计创作，主要内容包括：本发明涉及到一种流体控制装置,具体地说,涉及一种微量流体的隔膜式微流控控制装置,提供一种驱动力强劲,流体载体结构简单,封闭性好,流体可实现往复运动的隔膜式微流控控制装置,其包括一密封体,密封体下方设置两个以上的拼接压块,拼接压块和动力机构连接,动力机构控制拼接压块上下运动,密封体和拼接压块之间设置和密封体紧密配合的柔性膜,本技术方案在密封体上方设置的托板可以在装置作用的时候起到支撑的作用,特别是在拼接压块对流体进行挤压的时候,托板可以起到非常好的支撑作用。(The invention relates to a fluid control device, in particular to a diaphragm type micro-fluidic control device for micro-fluid, which has the advantages of strong driving force, simple structure of a fluid carrier, good sealing performance and capability of realizing reciprocating motion of fluid.)

1. The diaphragm type microfluidic control device is characterized by comprising a sealing body, more than two splicing pressing blocks are arranged below the sealing body and connected with a power mechanism, the power mechanism controls the splicing pressing blocks to move up and down, and a flexible film tightly matched with the sealing body is arranged between the sealing body and the splicing pressing blocks.

2. The diaphragm microfluidic control device according to claim 1, wherein each of the pressure pieces has a high position and a low position, and the highest position of the movement stroke is the high position, and the pressure pieces are tightly fitted with the sealing body; the lowest point of the motion stroke is a low position, and a space is reserved between the motion stroke and the sealing body.

3. The membrane-based microfluidic control device according to claim 1, further comprising a liquid injection port disposed on the sealing body or the flexible membrane.

4. The diaphragm microfluidic control device of claim 1, wherein an annular seal is disposed around the periphery of the spliced pressure block below the seal.

5. The membrane-type microfluidic control device according to claim 1, wherein the power mechanism is configured to be driven by air pressure, hydraulic pressure, electric push rod, electromagnet, or memory metal temperature-controlled telescopic driving.

6. The membrane-type microfluidic control device according to claim 1, wherein a sensor is provided for each of the compacts.

7. The membrane-based microfluidic control device of claim 1, further comprising a CPU, wherein the sensor and the power mechanism are connected to the CPU.

8. The membrane-based microfluidic control device of claim 1, wherein the movement of each of the segmented compacts is independent.

9. The membrane-based microfluidic control device according to claim 1, wherein a support plate is disposed above the sealing body.

Technical Field

The invention relates to a fluid control device, in particular to a diaphragm type micro-fluidic control device for micro-fluid.

Background

The micro-fluidic system realizes the addition, movement, convergence, uniform mixing, separation, collection and other fluid control of micro (micro-liter to nano-upgrade) fluid inside a chip (an independent device for carrying fluid and realizing fluid control) through a proper device, and combines heating, optical inspection, biological or chemical modification and reagent pre-embedding, completes corresponding reaction inside the chip and obtains a detection result, thereby becoming the popular technology in various fields of current biomedical treatment, molecular diagnosis, environmental monitoring, genetic engineering, breeding and the like.

The micro-fluidic is divided into mechanical force drive and non-mechanical force drive through driving force, the non-mechanical force is mainly divided into technologies such as electroosmosis drive, hot gas drive and light capture drive, the non-mechanical force drive has the problem of weak driving force, viscous fluid or fluid insensitive to a driving source is difficult to drive, and meanwhile, due to the weak driving force, the control stability is low, the requirement on the control of a manufacturing process is high, and the production and manufacturing cost is increased; mechanical force drive, mainly there are the drive of outside pump, pneumatic micropump, modes such as piezoelectricity micropump, the drive of outside pump has the fluid pipeline complicated, the problem of clean difficulty, pneumatic micropump and piezoelectricity micropump all can lead to the inside too complicated of micro-fluidic product, lead to the problem that the cost rises, simultaneously because the flow is mostly unidirectional movement, the fluid state is mostly the laminar flow, the mixing relies on the infiltration, the effect is worse than the turbulent flow that fluid can reciprocating motion.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a diaphragm type microfluidic control device which has strong driving force, simple fluid carrier structure and good sealing property and can realize reciprocating motion of fluid.

In order to solve the technical problems, the invention provides the following technical scheme:

the diaphragm type microfluidic control device comprises a sealing body, more than two splicing pressing blocks are arranged below the sealing body and connected with a power mechanism, the power mechanism controls the splicing pressing blocks to move up and down, and a flexible film tightly matched with the sealing body is arranged between the sealing body and the splicing pressing blocks.

Preferably, each splicing pressing block is provided with a high position and a low position, the highest position of the movement stroke of the splicing pressing block is the high position, and the splicing pressing block is tightly matched with the sealing body; the lowest point of the motion stroke is a low position, and a space is reserved between the motion stroke and the sealing body.

Preferably, the sealing device further comprises a liquid injection port, and the liquid injection port is arranged on the sealing body or the flexible membrane.

Preferably, the periphery of the splicing pressing block is provided with an annular sealing element below the sealing body.

Preferably, the power mechanism is set to be driven by air pressure or hydraulic pressure or electric push rod or electromagnet or memory metal temperature control telescopic driving.

Preferably, a sensor is provided for each compact.

Preferably, the device further comprises a CPU, and the sensor and the power mechanism are connected with the CPU.

Preferably, the movement of each of the stitching compacts is independent.

Preferably, a support plate is arranged above the sealing body.

The diaphragm type microfluidic control device comprises a sealing body, more than two splicing pressing blocks are arranged below the sealing body and connected with a power mechanism, the power mechanism controls the splicing pressing blocks to move up and down, a flexible film tightly matched with the sealing body is arranged between the sealing body and the splicing pressing blocks, and at least one fluid inlet is formed in the upper portion of the sealing body. In the operation process, fluid is between the sealing body and the flexible membrane, the pressure block is at a low position at the position of the fluid, when the fluid is required to flow, the spliced pressure block at the flowing position moves downwards to the low position to reserve a space for the fluid to flow, meanwhile, the spliced pressure block at the original position of the fluid moves upwards to reach a high position to extrude the flexible membrane, and the fluid can be completely extruded into the reserved space, so that the fluid control is realized.

According to the technical scheme, each splicing pressing block is provided with a high position and a low position, the highest position of the movement stroke of the splicing pressing block is the high position, and the splicing pressing block is tightly matched with a sealing body; the lowest point of the motion stroke is a low position, and a space is reserved between the motion stroke and the sealing body. Therefore, the pressure block at the position where the fluid reaches is at a low position to provide a space for the fluid to flow, the pressure blocks at other positions are at a high position, the pressure block at the low position can provide power when the fluid flows, and the pressure block at the high position extrudes the flexible film to form a seal to prevent the fluid from flowing; because the splicing pressing block is tightly matched with the sealing body, the fluid can completely flow without residue.

It still includes annotates the liquid mouth, annotates the liquid mouth and sets up on seal or flexible membrane, and the position of annotating the liquid mouth can set up as required, can set up on the seal also can set up on flexible membrane, annotates the liquid mouth and seals after annotating the liquid, because the requirement to the leakproofness is higher under many circumstances, so a lot of all be that the fluid that directly seals is good is put this device and is realized flowing, need not annotate the liquid mouth under this kind of circumstances, annotates the liquid mouth and can not use or not set up.

The annular sealing member is arranged on the periphery of the splicing pressing block below the sealing body, the sealing is more reliable due to the annular sealing member, and the fluid ring can be arranged in the action space of the splicing pressing block.

The power mechanism of the technical scheme is set to be driven by air pressure or hydraulic pressure or an electric push rod or an electromagnet or memory metal temperature control telescopic driving, and when the splicing pressing block of the device is used, the high position and the low position need to be changed to realize fluid flow, so that the power mechanism is needed and can be selected according to needs.

The sensor is arranged corresponding to each splicing pressing block, and can detect the state of the corresponding pressing block position, including the position state and whether fluid exists or not, and preparation is made for automatic control.

The motion of each splicing pressing block of the technical scheme is independent, and the splicing pressing blocks can be respectively independent or can be simultaneously moved to a low position or a high position with the splicing pressing blocks at other positions.

The technical scheme also comprises a CPU, wherein the sensor and the power mechanism are connected with the CPU, the CPU can realize centralized automatic control, and a user can add, move, converge, mix, separate, collect and other fluid control according to a program by programming a fluid flow rule program.

This technical scheme can play the effect of support in the device effect at the layer board that the seal top set up, and especially when the concatenation briquetting extrudeed the fluid, the layer board can play very good supporting role.

On the basis of the common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain the embodiment of the invention.

Drawings

FIG. 1 is a schematic structural view of the present solution;

FIG. 2 is a side schematic view of FIG. 1 of the present solution;

fig. 3 is a schematic view of another state of the present solution.

1-an annular seal; 2-a flexible film; 3-splicing and briquetting; 4-a fluid; 5-sealing body; 6-support plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are further described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in fig. 1, the diaphragm type microfluidic control device comprises a sealing body 5, wherein more than two splicing pressing blocks 3 are arranged below the sealing body 5, the splicing pressing blocks 3 are connected with a power mechanism, the power mechanism controls the splicing pressing blocks 3 to move up and down, and a flexible membrane 2 tightly matched with the sealing body 5 is arranged between the sealing body 5 and the splicing pressing blocks 3.

Example 2:

the difference between the embodiment and the embodiment 1 is that the sealing device further comprises a CPU, the sensor and the power mechanism are connected with the CPU, and a supporting plate 6 is arranged above the sealing body 5.

Example 3:

the difference between the embodiment and the embodiment 1 is that each splicing pressing block 3 is provided with a high position and a low position, the highest position of the movement stroke is the high position, and the high position is tightly matched with the sealing body; the lowest point of the motion stroke is a low position, and a space is reserved between the motion stroke and the sealing body 5. It also comprises a liquid injection port which is arranged on the sealing body 5 or the flexible membrane 2. And an annular sealing element 1 is arranged on the periphery of the splicing pressing block 3 below the sealing body 5. The power mechanism is set to be driven by air pressure or hydraulic pressure or an electric push rod or an electromagnet or memory metal temperature control telescopic drive. A sensor is arranged corresponding to each pressing block.

Example 4:

the difference between the present embodiment and embodiment 3 is that the spliced pressure blocks 3 of the present embodiment are arranged into 5 pieces, two pressure blocks are in a low position, three pressure blocks are in a high position, and the flexible film of the pressure block in the low position contains fluid.

Example 5:

the difference between this embodiment and embodiment 4 is that in this embodiment, one of the stitching pressure blocks is in the low position, and the other four stitching pressure blocks are in the high position.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.