Double-jet-flow opposite-flushing free liquid film generation device

Abstract

The invention relates to the technical field of liquid film preparation, and discloses a double-jet-flow opposite-flushing free liquid film generation device, which comprises a first needle head assembly, a second needle head assembly, a third needle head assembly, a fourth needle head assembly and a third needle head assembly, the first needle head assembly comprises a fine adjustment connecting module, a first fixing module and a second fixing module, the first fixing module is arranged on the fine adjustment connecting module, and the first needle head is connected with the first fixing module; the first needle head is used for generating first jet flow of opposite impact; the first fixing module is an adjustable fixing module; the second needle head assembly comprises a second fixing module and a second needle head connected with the second fixing module; and the second needle head is used for generating second jet flow which is opposite to the first jet flow to form a liquid film. Components in the device can be standard parts or prepared through turn-milling machining, and the device has good disassembly, assembly and adaptability. Besides, according to the double-jet-flow opposite-flushing free liquid film generation device provided by the invention, the shape and the thickness of the liquid film are conveniently controlled by adjusting the jet flow, the opposite-flushing angle and the opposite-flushing position, so that the uniformity and the stability of the liquid film are realized.

Description

Technical Field

[0001] The invention relates to the technical field of liquid film preparation, and in particular to a free liquid film generating device with double jet impact. Background Art

[0002] The existing methods of generating liquid films mainly include jet flow method, microfluidic slot flow method and gravity liquid film method, each of which has different advantages and disadvantages:

[0003] Jet method: The liquid film is formed by a high-speed liquid jet, and the flow rate and jet direction can be flexibly adjusted. Its advantages are simple equipment and flexible operation, but its disadvantages are poor jet stability, difficulty in uniformly controlling the thickness of the liquid film, and difficulty in achieving sub-micron accuracy.

[0004] Microfluidic slot method: The liquid film is formed through fine slot design and flow control, which is suitable for precise control of the liquid film morphology and thickness. The advantages are high precision and less pollution, but the equipment processing is complex and the cost is high, and it is difficult to clean and maintain.

[0005] Gravity liquid film method: It uses the natural flow of liquid under gravity to form a liquid film, which is simple to operate and has low manufacturing cost. The disadvantage is that the thickness of the liquid film is limited by the viscosity of the liquid and gravity, the stability is poor, and it is easily affected by the external environment.

[0006] These methods have their own advantages and disadvantages in liquid film formation, but they generally have limitations in stability, thickness control and adaptability.

[0007] Therefore, the prior art needs to be further improved and enhanced. Summary of the invention

[0008] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a free liquid film generating device with double jet collision, which aims to adjust the liquid film morphology and thickness through eccentric collision, overcome the deficiencies of the above-mentioned technology, have better stability and flexibility, be suitable for a variety of experimental environments and have a lower manufacturing cost.

[0009] The above object of the present invention is achieved through the following technical solution: a free liquid film generating device with double jets, comprising:

[0010] The first needle assembly comprises a micro-adjustment connection module, a first fixing module arranged on the micro-adjustment module, and a first needle connected to the first fixing module; the first needle is used to generate a first jet of impact; the first fixing module is an adjustable fixing module;

[0011] The second needle assembly includes a second fixing module and a second needle connected to the second fixing module; the second needle is used to generate a second jet that impacts the first jet to form a liquid film.

[0012] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. Through the following preferred technical solutions, the objectives and beneficial effects of the present invention can be better achieved and realized.

[0013] As a preferred technical solution, in the dual-jet counter-jet free liquid film generating device, the first fixing module can be adjusted in two orthogonal directions.

[0014] As a preferred technical solution, the dual-jet counter-jet free liquid film generating device is provided with an air inlet on the first needle and / or the second needle, and the air inlet is externally connected to an air supply regulating device, which controls the jet flow rate by changing the air intake pressure.

[0015] As a preferred technical solution, in the dual-jet counter-jet free liquid film generating device, the first fixed module can move in two degrees of freedom, front and back and left and right.

[0016] As a preferred technical solution, the dual-jet counter-jet free liquid film generating device is characterized in that the first needle is connected to a first needle connecting fixture, and the first needle connecting fixture is detachably connected to the first fixing module.

[0017] As a preferred technical solution, the double-jet counter-attacking free liquid film generating device is characterized in that the second needle is connected to a second needle connecting fixture, and the second needle connecting fixture is detachably connected to the second fixing module.

[0018] As a preferred technical solution, in the double-jet counter-jet free liquid film generating device, the nozzle of the first needle head and / or the second needle head is a circular nozzle or a flat nozzle.

[0019] As a preferred technical solution, the double-jet counter-jet free liquid film generating device, wherein the free liquid film generating device also includes an intelligent control system, including a real-time data monitoring mechanism and an automatic adjustment mechanism, and the automatic adjustment mechanism is used to automatically adjust the intake pressure and the inclination angle of the second needle.

[0020] As a preferred technical solution, the dual-jet counter-attacking free liquid film generating device further comprises an electric field assisting device, which is disposed on the first needle or the second needle, and the jet morphology is regulated by the electric field force generated by the electric field assisting device.

[0021] As a preferred technical solution, in the double-jet counter-jet free liquid film generating device, the liquid inlet mode of the first needle and the second needle is continuous liquid inlet or pulse liquid inlet.

[0022] Beneficial effects: Compared with the prior art, the free liquid film generation device with double jet collision provided by the present invention can achieve eccentric collision by adjusting the flow rate and collision angle of the jet, thereby effectively controlling the generation state of the liquid film. The shape and thickness of the liquid film can be flexibly adjusted according to experimental requirements, overcoming the defect that the thickness of the liquid film is difficult to control uniformly in the traditional method, especially in the preparation of liquid films with submicron precision. In addition, the main components in the device are prepared by standard parts or turning and milling, and have good disassembly, assembly and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a free liquid film generating device with dual jet impact provided by the present invention. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is for reference only.

[0026] In fact, it is only illustrative and is not intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. For the techniques, methods known to ordinary technicians in the relevant fields,

[0029] The techniques, methods and devices may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered part of the specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] like Figure 1 As shown, a free liquid film generating device for dual jet counter-jet provided by the present invention comprises: a first needle assembly 10 and a second needle assembly 20 for generating counter-jet, wherein the first needle assembly 10 comprises a fine-adjusting connection module 100, a first fixing module 110 arranged on the fine-adjusting module, and a first needle 120 arranged on the first fixing module 110. The fine-adjusting connection module 100 is provided with an adjusting knob (not shown), and the movement of the first fixing module 110 can be controlled by the adjusting knob. That is to say, the first fixing module 110 can be controlled to move in the left and right direction or the front and back direction by the adjusting knob, so as to adjust the inclination angle of the jet generated by the first needle 120. It should be noted that the specific structure of the fine-adjusting connection module 110 can be selected and set according to actual needs, for example, it can be a combination of a linear guide rail and a slider, a combination of a slide rail and a sleeve, or a cross slide, and of course, it can also be other mechanical structures that can achieve the above functions.

[0032] In this embodiment, the first fixing module 110 may be in the shape of a square structure, and may be made of metal or plastic. The body of the first fixing module 110 may be a cube, and a screw hole or a slideway is provided in the middle thereof for fixing the first needle 120. The first needle 120 includes a liquid supply pipe and a needle provided at the end of the liquid supply pipe, a liquid inlet is provided on the liquid supply pipe, and a three-way is provided on the liquid inlet, which is connected to the air pressure control device and the liquid supply device, and the jet flow rate is controlled by controlling the gas pressure entering the liquid supply pipe, thereby controlling the thickness and shape of the liquid film.

[0033] The first needle 120 is fixed to the first fixing module 110 through a T-shaped connecting fixture 130. It is easy to understand that a through hole is set at one end of the T-shaped connecting fixture, the first needle is fixed in the through hole, and one end of the T-shaped connecting fixture is fixed to the first fixing module 110 through a screw hole or a slide on the first fixing module 110.

[0034] In one implementation of the present invention, the T-shaped connecting fixture may be a connecting fixture with a telescopic function, that is, it may be extended or shortened in the lateral direction, so that the position of the first needle may be flexibly adjusted.

[0035] In this embodiment, the second needle assembly 20 includes a second fixing module 200 and a second needle 210 connected to the second fixing module 200; the second needle 210 is used to generate a second jet that is counteracted with the first jet to form a liquid film. Among them, the size, shape and material of the second fixing module 200 can be the same as or different from the first fixing module. In the present invention, the first fixing module and the second fixing module are the same, which can simplify the maintenance and maintenance of the entire structure and improve the versatility of parts. At the same time, the second needle 210 can be the same as the first needle 120, further reducing costs. Of course, it can also be set separately as needed. For example, the first needle 120 uses a retractable connecting fixture, while the second needle 210 can use a non-retractable connecting fixture.

[0036] In one implementation of the present invention, the second needle assembly 20 is fixed, that is, the second fixing module and the second needle are fixed, the inclination angle of the second needle is fixed, and the angle of the two jet collisions is adjusted only by adjusting the first needle assembly 10. By setting the second needle assembly in a fixed form, the adjustment process of liquid film generation is simplified, because only the first needle assembly needs to be adjusted as needed.

[0037] In one implementation of the present invention, the nozzle of the first needle 120 and / or the second needle 210 is a circular nozzle or a flat nozzle. In other words, different nozzles can be selected for the two needles to adjust the formation of the liquid film. For example, if the nozzle of the first needle is circular, the nozzle of the second needle is circular, or both are circular or flat nozzles, or one is a circular nozzle and the other is a flat nozzle. It should be noted that when two nozzles of different shapes are selected for use in combination, the liquid supply form and pressure need to be adjusted accordingly. In addition, the first needle and the second needle can be 10μm-1mm needles, which are selected according to the liquid used for the liquid film to be formed and the specifications of the liquid film.

[0038] In one implementation of the present invention, the free liquid film generating device further includes an intelligent control system (not shown), including a real-time data monitoring mechanism and an automatic adjustment mechanism, wherein the automatic adjustment mechanism is used to automatically adjust the air intake pressure and the tilt angle of the second needle. In other words, the liquid film generating device is provided with a system that can detect the shape of the liquid film, the liquid supply of the two needles, and the air pressure in real time, and adjust the first needle assembly and / or the second needle assembly in time. At the same time, automatic control can be achieved by setting an automatic adjustment mechanism.

[0039] In one implementation of the present invention, the free liquid film generating device further includes an electric field auxiliary device (not shown), which can be installed on one of the two needles or both of them at the same time, and the jet morphology is regulated by the electric field force generated by the electric field auxiliary device. It should be noted that the specific structure and installation and fixing method of the electric field auxiliary device can be selectively installed according to actual design requirements. What is intended to be explained here is that the morphology of the liquid film can be controlled by adding an electric field auxiliary device.

[0040] In summary, the key components such as the fine-adjustment connection module, the first fixing module, the second fixing module, the first needle and the second needle in the present invention can all be assembled using standard parts, or prepared by conventional turning and milling processes. This design not only reduces the manufacturing difficulty, but also effectively controls the production cost of the device, thereby improving its market competitiveness. The various components of the device are connected in a detachable manner, which makes the device more convenient and efficient when maintaining, replacing components, and adjusting experimental conditions. Users can quickly replace needles or adjust the position of components according to actual needs, which greatly improves the flexibility of use and maintenance efficiency of the device.

[0041] Furthermore, by adjusting the jet flow rate, the impact angle and the impact position, the present invention can conveniently control the shape and thickness of the liquid film. This precise control method makes the generation process of the liquid film more controllable, and can flexibly adjust the shape and size of the liquid film according to experimental or production requirements. For example, when it is necessary to prepare an ultra-thin liquid film, the generation of a uniform liquid film with a thickness of submicron level can be achieved by fine-tuning the jet flow rate and the impact angle; and when a larger area liquid film is required, the demand can also be met by adjusting the impact position. The device effectively reduces the unevenness that may occur in the generation process of the liquid film by optimizing the smoothness and thickness of the liquid film surface. This uniform liquid film is not only more perfect in appearance, but also has higher performance in practical applications. For example, in the field of spectral detection, the uniformity of the liquid film directly affects the quality of the spectral signal. The present invention ensures the uniformity and stability of the liquid film by precisely controlling the generation process of the liquid film, thereby providing high-quality liquid film materials for related applications.

[0042] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A free liquid film generating device with double jets colliding, characterized in that: include: The first needle assembly comprises a micro-adjustment connection module, a first fixing module arranged on the micro-adjustment module, and a first needle connected to the first fixing module; the first needle is used to generate a first jet of impact; the first fixing module is an adjustable fixing module; The second needle assembly includes a second fixing module and a second needle connected to the second fixing module; the second needle is used to generate a second jet that impacts the first jet to form a liquid film.

2. The double jet collision free liquid film generating device according to claim 1 is characterized in that: The first fixing module is adjustable in two orthogonal directions.

3. The double jet collision free liquid film generating device according to claim 1 is characterized in that: The first needle and / or the second needle is provided with an air inlet, and the air inlet is externally connected to an air supply regulating device, and the jet flow rate is controlled by changing the air inlet pressure.

4. The double jet collision free liquid film generating device according to claim 2 is characterized in that: The first fixing module can move in two degrees of freedom, front-to-back and left-to-right.

5. The double jet collision free liquid film generating device according to claim 1 is characterized in that: The first needle is connected to a first needle connecting and fixing member, and the first needle connecting and fixing member is detachably connected to the first fixing module.

6. The double jet collision free liquid film generating device according to claim 1 is characterized in that: The second needle is connected to a second needle connecting and fixing member, and the second needle connecting and fixing member is detachably connected to the second fixing module.

7. The double jet collision free liquid film generating device according to claim 1 is characterized in that: The nozzle of the first needle and / or the second needle is a circular nozzle or a flat nozzle.

8. The double jet collision free liquid film generating device according to claim 3 is characterized in that: The free liquid film generating device further comprises an intelligent control system, including a real-time data monitoring mechanism and an automatic adjustment mechanism, wherein the automatic adjustment mechanism is used to automatically adjust the air intake pressure and the inclination angle of the second needle.

9. According to the double-jet counter-attacking free liquid film generating device of claim 1, the free liquid film generating device also includes an electric field assisting device, and the electric field assisting device is arranged on the first needle or the second needle, and the jet morphology is regulated by the electric field force generated by the electric field assisting device.

10. The double jet collision free liquid film generating device according to claim 1, characterized in that: The first needle and the second needle are fed with liquid in a continuous manner or in a pulsed manner.

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