JP6046078B2 - Liquid film nozzle device, injection needle, syringe, syringe-type liquid film generation device, liquid sterilization device, liquid screen forming device, and liquid film nozzle device manufacturing method - Google Patents

Description

The present invention relates to a liquid film nozzle device, a syringe needle, a syringe, a syringe-type liquid film generating device, a liquid sterilizing device, a liquid, and a liquid film nozzle device, which can realize the conversion of the liquid into a plate-like liquid film having a flat surface The present invention relates to a screen forming apparatus and a liquid film nozzle apparatus manufacturing method .

Electromagnetic waves are called ultraviolet rays, infrared rays, microwaves, terahertz waves, etc. depending on their wavelengths. An electromagnetic wave having a wavelength felt with the naked eye is called visible light or simply light. A technique for measuring various characteristics of a substance using electromagnetic waves is generally called spectroscopic measurement or spectroscopy, and the measuring device is called a spectroscopic device.

In spectroscopic measurement, an electromagnetic wave is incident on a measurement target substance, and the physical or chemical properties of the measurement target substance are measured from changes in the electromagnetic wave generated by the interaction between the electromagnetic wave and the substance during passage or reflection.

In order to perform highly accurate measurement, the thickness of the material to be measured must be thin enough to transmit electromagnetic waves, and it must be installed so that impurities other than the material to be measured are not mixed in. Don't be.

The substance to be measured that is a target of spectroscopic measurement includes forms such as a gas, a solid, and a liquid. According to each form, the installation method of a to-be-measured substance is devised so that electromagnetic waves permeate | transmit appropriately.

In the measurement of a liquid sample, the sample is generally placed in a container made of a material that transmits electromagnetic waves, such as glass, called a solution cell, and the electromagnetic wave is incident from the outside of the solution cell and transmitted through the solution cell. Is measured.

For example, when performing spectroscopic measurement of an aqueous solution sample using terahertz waves, the signal-to-noise ratio of the measurement signal to be detected deteriorates due to the strong electromagnetic wave absorption effect of water molecules, and the solution cell becomes thinner than 50 microns. Therefore, a means using a liquid film nozzle device as disclosed in Patent Document 3 below has been proposed.

In the spectroscopic apparatus that uses a liquid sample, the spectroscopic measurement that has been pointed out conventionally, such as the problem of the thickness of the liquid sample and the problem of interference caused by the film surface of the liquid, by means shown in Patent Document 1 and Patent Document 3. An apparatus that overcomes the related problems has been proposed, but a new problem of contamination is emerging.

Kaikai 2-129755 JP-A-9-275235 JP 2011-127950 A

The conventional liquid film nozzle device is configured by joining a nozzle tip portion having a function of ejecting liquid in a film shape and a pipe for guiding the liquid to the nozzle tip portion. In the manufacture of the nozzle tip portion, a three-dimensional shape based on hydrodynamics for converting a liquid into a film shape is formed by performing fine processing such as electric discharge processing and wire cut processing on a rod-shaped metal piece. Next, the nozzle tip portion and the tube for guiding the liquid are integrated by silver brazing or using an adhesive, thereby producing a liquid film nozzle device.

In this liquid film nozzle manufacturing method, it is indispensable that the nozzle tip portion and the pipe for guiding the liquid are individually manufactured and then bonded, and in this bonding process, a silver brazing operation or an adhesive is used. A trace amount of chemical substances remained inside the tube fitted with And it was not easy to clean the chemicals completely.

Furthermore, the nozzle tip diameter is about 2 millimeters, which is the minimum limit value, depending on the general pipe diameter used in industry and the processing limit of electric discharge machining and wire cutting. It has been extremely difficult to mold.

Therefore, it has been impossible to embed the above-described nozzle tip portion in a tube having a diameter (for example, 0.8 mm in diameter) like an injection needle.

Further, when it is necessary to form a highly pure liquid film, a chemical substance remaining in the liquid film nozzle apparatus in which the nozzle tip portion and the pipe are combined has been a problem.

The manufacturing and structural problems as described above are factors that significantly limit the application range of a liquid film nozzle device suitable for measuring a liquid sample in spectroscopic measurement for high-precision measurement. It was.

From the field of spectroscopic measurement technology, there has been a demand for a new structure and manufacturing method of a liquid film nozzle apparatus that can be applied to as little liquid as possible without fear of contamination.

The above-described problem can be solved by fundamentally removing the process of joining by revising the technique of joining two parts, the pipe and the nozzle tip part, and providing a technique for directly processing the pipe.

According to Patent Document 1, the basic principle that a liquid film is generated is a spatial collision of fluids and a spatial arrangement of spouts opened at the collision location.

In the structure of the nozzle tip portion used in the conventional method, an inclined portion (generally referred to as a V-groove) having a V-shaped cross section for compressing the fluid flowing from the pipe is formed.

In the present invention, the portion corresponding to the V-groove is formed by squashing the tube toward the tip. Further, a part of the tip is crushed so that the inner wall of the tube is in close contact with the gap and becomes flat.

By additionally processing the flattened portion of the tube as will be described later, it becomes possible to place the jet outlet at the portion where the fluid collides, as in the conventional liquid film nozzle device.

By crushing a tube whose inner and outer walls are sufficiently cleaned as described later, and by processing the opening (jet port) using a laser processing machine that can perform non-contact processing, a processing process that prevents contamination by impurities is performed. As a result, it is possible to realize a liquid film nozzle device with less impurities.

Just by crushing the tube, there is no need to connect the nozzle tip part with limited dimensions as in the past, so the diameter of the tube can be set freely, so the same applies to tubes with a diameter of 1 mm or less It is possible to form the liquid film nozzle function.

In addition, a liquid film nozzle needle manufactured by applying the processing method according to the present invention to the tip of an injection needle manufactured by completely removing impurities, a syringe manufactured by removing impurities (sometimes called a syringe) In combination with (), it is possible to form a liquid thin film free of impurities.

Furthermore, the use of an injection needle and a syringe makes it possible to generate a liquid film with the smallest possible amount, and spectroscopic measurement can be performed even if the total amount of liquid that can be prepared as a sample is small.

The present invention provides a liquid film nozzle generating apparatus that eliminates the contamination factor that affects analysis in the formation of a liquid film that is required when performing highly sensitive analysis of a liquid substance in spectroscopic measurement. And the accuracy of liquid analysis can be improved.

In addition, since the formation of a liquid film can be realized by processing only the tube that guides the liquid, there is no restriction on the diameter of the tube, so a tube with a diameter of 1 millimeter or less, such as a syringe needle, from a tube with a diameter of several centimeters. Since the liquid film can be processed to form a liquid film, the size of the liquid film shape can be easily changed.

As a result, in the manufacture of liquid film nozzle devices, it is possible to flexibly handle liquids with various viscosities by simply changing the diameter of the tube. The range of viscosity of the liquid becomes wide.

It is a whole shape figure of a nozzle part. The shape figure of the pipe | tube used for manufacture of a nozzle part. Explanatory drawing which processes the front-end | tip of a nozzle part. Sectional drawing of the nozzle part which crushed the front-end | tip. The expanded sectional view of the front-end | tip part of a nozzle part. Sectional drawing (1) and top view (2) of the front-end | tip part of a nozzle part. The perspective view which shows the whole nozzle part. The figure explaining the space and dimension inside a nozzle part. The figure explaining the form of the liquid film which a nozzle part produces | generates. The figure explaining the example of the syringe used for the production | generation of a liquid film. The figure explaining the syringe type | mold liquid film apparatus used with a terahertz wave spectrometer. The figure explaining the syringe type | mold liquid film apparatus used with a terahertz wave spectrometer. The figure explaining the automatic control syringe type liquid film apparatus used with a terahertz wave spectroscopic device. The figure which shows the example which installed the automatic control syringe type | mold liquid film apparatus in the terahertz wave spectrometer. The figure explaining another form of the liquid film which a nozzle part produces | generates. The figure explaining the example which applied the liquid film production | generation nozzle to liquid sterilization. The figure explaining the example which applied the liquid film production | generation nozzle to the liquid screen.

1 cylindrical tube,
2 V-shaped cutting shape,
3 The other end of tube 1
4 cylindrical tube,
5 Cubic jig,
6 direction of pressurization,
7 End of tube,
8 Close inner surface,
9 Inside the tube,
10 Joining line,
11 Central reference plane,
12 Extension line of the inner surface 9,
13 Side cut surface,
14 Open cut surface,
15 central axis of the tube,
16 Extension of side cut surface,
17 End surface,
18 Inner surface of the tube,
19 The inner surface of the tube,
20 first liquid film surface,
21 string-like fluid column,
22 Fluid column assembly point,
23 Second liquid film surface,
24 Fluid column assembly point,
25 Third liquid film surface,
26 General syringe body,
27 Needle,
28 The tip of the injection needle,
29 Liquid film,
30 pistons,
31 vacuum flange,
32 Syringe diameter conversion adapter,
33 terahertz waves,
34 Liquid sample liquid film,
35 shielding container,
36 Liquid damper,
37 piping,
38 Liquid collection tank,
39 Liquid splash prevention shutter,
40 Beam passage hole,
41 rotating lever,
42 piping,
43 Syringe drive holder,
44 syringe drive unit,
45 Support groove,
46 Flange insertion port,
47 End of syringe,
48 drive shaft,
49 connection pins,
50 control device,
51 vacuum vessel,
52 liquid film part,
53 Liquid film boundary,
54 Fog,
55 Solution tank,
56 piping,
57 Pressurizing pump,
58 Large nozzle,
59 containers,
60 Irradiation window,
61 UV light source,
62 UV rays,
63 mist,
64 liquid film generation nozzle,
65 liquid,
66 pipes,
67 variable valve,
68 liquid film,
69 liquid screen,

The details of the present invention will be described with reference to the accompanying drawings. The present invention is composed of two parts, a nozzle part having a shape that creates a function of forming a liquid into a film, and a liquid driving part that circulates and ejects the liquid including the nozzle part.
Each drawing merely schematically shows the shape, size, and positional relationship of each component to the extent that the present invention can be understood, and the present invention is not limited to the illustrated examples.

FIG. 1 shows the overall shape of a nozzle portion in a liquid film nozzle device according to the present invention. The nozzle part which produces | generates a liquid film is manufactured by processing a V-shaped cutting | disconnection shape 2 after processing and crushing by applying pressure to one end of the cylindrical pipe | tube 1 with a hollow inside. The other end 3 of the tube 1 is connected to various liquid drives depending on the application. Details of the configuration and the processing means of the nozzle portion will be described below.

FIG. 2 shows a hollow tubular tube 4 that is cut into an appropriate length for use in the nozzle portion and is hollow at both ends before processing. Basically, the pipe is not limited to a metal pipe, and may be a pipe made of a material such as Teflon (registered trademark) that does not contain impurities, but is limited to materials and dimensions that can be processed later.

In FIG. 3, the end of the tube 4 is sandwiched between cube jigs 5 having a hardness higher than that of a tube having a flat surface, and pressure is applied from above and below toward the pressurizing direction 6 so that the end of the tube 7 Mold into shape. If it is a metal tube, such a shaping | molding process can be performed if the tool generally called a vise is used. The reason for using the jig 5 having a sufficiently flat surface is to flatten the surface of the end 7 of the crushed tube. Furthermore, the inner wall surface of the end 7 of the tube is also brought into close and uniform contact.

FIG. 4 shows a cross-sectional view when the tube 4 is crushed by the method described in FIG. The tight inner surface 8 of the end 7 of the tube must be flat and tight with no gaps. The inner surface 9 in the vicinity that reaches the flatly adhered portion 8 needs to reach the adhered portion 8 with a smooth inclination. In order to bring about such a processing result, it is desirable that the inner surface of the tube 4 has a mirror shape.

FIG. 5 shows an enlarged view of the cross section of the end portion 7 of the tube. The inner surface 9 of the tube comes into contact with the contact portion 8 with a joining line 10 with a gentle inclination. The tube is crushed by the method shown in FIG. 3 so that the inner surface 9 of the tube is formed symmetrically with respect to the reference surface 11 on both sides of the central reference surface 11 inside the tube including the contact portion 8. An angle formed by the extension line 12 of each inner surface 9 and the center reference surface 11 is defined as θ. θ will be described later.

FIG. 6 shows a sectional view (1) and a top view (2) of the end portion 7 of the tube. The cross-sectional view (1) is equivalent to FIG. 5, and a top view (2) is drawn corresponding to each part. The space inside the tube terminates at the joining line 10. A portion from the joining line 10 toward the tip of the tube is occupied by the contact portion 8, the inner surface of the tube is closed, and there is no gap through which liquid or gas can pass.

As shown in the top view (2) of FIG. 6, a V-shaped cutting process comprising a side cut surface 13 and an open cut surface 14 is applied to the end 7 of the tube. The side cut surface 13 is cut to a portion where the space inside the tube exists beyond the joint line 10 at an inclination of an angle φ formed with the extension line 16 of the side cut surface 13 with respect to the central axis 15 of the tube. The distance between the end surface 17 of the cut surface 13 and the joining line 10 shown in the top view (2) is d. The opening cut surface 14 processed along the end surface 17 is parallel to the bonding line 10 and its width is W. The width W, the angle φ, and the distance d will be described later.

The inner surface 18 of the tube in the top view (2) is different from the inner surface 9 of the tube shown in the sectional view (1). Further, the inner surface 19 of the pipe that is not affected by the process of crushing the pipe is assumed to be the same cylindrical shape from both the sectional view (1) and the side view (2).

FIG. 7 shows a perspective view of a nozzle portion manufactured by applying the crushing process and the V-shaped cutting shape 2 described in FIGS. 2 to 6 to a hollow cylindrical tube 1. The liquid flows in from the end 3 of the tube, and the liquid is ejected from the opening cut surface 14 shown in FIG. In this figure, the opening cut surface 14 is not shown.

The processing dimensions related to the liquid film generation function will be described using the space inside the nozzle portion of FIG. As shown in the top view (2) of FIG. 6, the space left inside the tube is composed of the inner surface 19 of the tube, the inner surface 18 of the tube, the inner surface 9 of the tube, and the joining line 10.

In FIG. 8, the dimensions of each part are defined. Let L be the length of the joining line 10 produced by crushing a tube whose inner surface is cylindrical. If the radius of the inner surface of the tube is r, the length L is
L = πx r (Formula 1)
It can be expressed as. Further, the side cut surface 13 that cuts at an angle φ with respect to the center line 15 reaches the end surface 17 at a distance d from the bonding line 10. An opening cut surface 14 is formed on the end surface 17. The length of the interval between the side cut surface 13 and the opening cut surface 14 is defined as a width W. The opening cut surface 14 is an opening (liquid ejection port) through which the liquid inside the tube passes, and its width is a. The relational expression for generating an appropriate liquid film is as follows.
L: W = 20: 1 (Formula 2)
a: W = 1: 3 (Formula 3)

The angle θ is an angle formed by the extension line 12 of the inner surface 9 described with reference to FIG.

An appropriate liquid film can be generated under the dimensional conditions defined by Equations 1 to 3 above. However, since it is inevitable that the material of the tube expands and contracts when the tube is crushed, L in Equation 1 includes a processing tolerance of several percent. Similarly, other numerical values include variations due to machining tolerances of several percent. The angle φ is about 20 degrees and the angle θ is in the range of about 15 degrees to about 25 degrees to produce a suitable liquid film obtained in the experiment. When the inner diameter r of the tube is determined and Equations 1 to 3 are used so as to fall within the above-mentioned angle range, the dimensions required for processing can be determined. The thickness of the liquid film increases as the dimensions a and W are increased, and decreases as the dimensions are decreased. The thickness of the membrane can be adjusted with this feature size from a few microns to a few hundred microns. Even with the same processing size, the thickness of the liquid film is reduced when the pressure of the liquid flowing into the nozzle portion is high, and is increased when the pressure is low.

The spatial arrangement of the liquid film generated by the nozzle unit will be described with reference to FIG. The three-dimensional coordinate axes that define the space are indicated by x-y-z. It is assumed that the central axis 15 of the nozzle portion made from the tube 1 is oriented in the y-axis direction. The x axis orthogonal to the y axis and the joining line 10 are parallel. The opening cut surface 14 becomes an opening through which the liquid inside the tube passes, and FIG. 9 shows a liquid film created by the liquid ejected from the opening. The first liquid film surface 20 is a surface perpendicular to the bonding line 10. That is, it is parallel to the z-y plane perpendicular to the x axis.

As shown in Patent Document 1, the first liquid film surface 20 is a liquid ejected from the opening of the nozzle portion, and the surface of the liquid between the two string-like fluid columns 21 flowing in the zy plane. Formed by tension. The string-like fluid column 21 collides at a fluid column assembly point 22 while drawing a smooth arc to form a second liquid film surface 23. The second liquid film surface 23 is perpendicular to the first liquid film surface 20. That is, the second liquid film surface 23 is parallel to the xy plane. Similarly to the first liquid film surface 20, the second liquid film surface 23 is formed by two fluid columns, and the fluid columns collide at the next fluid column assembly point 24 to form the next third liquid film surface 25. To do. The third liquid film surface 25 is perpendicular to the second liquid film surface 23 as described above.

When the flow rate, pressure, and viscosity of the liquid flowing into the nozzle portion are appropriately balanced, a surface that is orthogonal to the first liquid film surface, the second liquid film surface, and the third liquid film surface is generated as shown in FIG. Each liquid film surface is generated including the central axis 15 in the plane, and the fluid column aggregation points 22 and 24 exist on the central axis 15. By utilizing this characteristic, it can be confirmed whether or not the nozzle portion has been appropriately processed. When processing is inappropriate, a liquid film having no symmetry with respect to the central axis 15 is generated.

Although the fourth liquid film surface is also possible in principle, in the case of a normal liquid having a viscosity such as water, the liquid film surface is observed up to the third liquid film surface, and thereafter becomes a linear fluid column. When the pressure of the liquid flowing into the nozzle portion is low, only the first liquid film surface is generated, and conversely, when the pressure is high, the set point where the string-like fluid columns collide is as described later. The liquid film disappears and spreads in a fan shape.

FIG. 10 shows an example in which the above-described nozzle portion is processed at the tip of an injection needle used in a general syringe (syringe). The nozzle portion described above is processed on the distal end portion 28 of an injection needle 27 connected to a general syringe body 26. It is desirable that the processing at this time be performed in a clean processing process as in a general injection needle. The liquid film 29 can be generated by pushing the liquid placed in the syringe 26 with the piston 30. The target liquid film can be generated by controlling the diameter of the injection needle 27 and the force and speed of pushing the piston 30 in accordance with the size and thickness required for the liquid film.

If the diameter of the tube is thin, such as the tip of an injection needle, such as 1 mm or less, femtosecond laser processing that is not affected by heat can be used for normal laser processing such as burrs and dross on the cut surface. Problems that tend to occur can be avoided. Furthermore, it is possible to reduce a thermal influence such as an increase in the gap between the contact portions 8 (FIG. 5) of the crushed tube.

FIG. 11 shows an example of a syringe-type liquid film generating device in the case where a liquid sample is measured by a general spectroscopic device, particularly a terahertz wave spectroscopic device, using the syringe 26. As will be described later, the terahertz wave spectrometer needs to place a sample in a vacuum container, and uses a vacuum flange 31 for connection as shown in FIG. The size of the syringe 26 may vary depending on the amount of sample liquid, and a syringe diameter conversion adapter 32 is disposed between the flange 31 and the syringe 26.

A terahertz wave 33 propagates to the vacuum container side of the flange 31, and a liquid film 34 of a liquid sample generated from an injection needle having a syringe and a nozzle function is disposed so as to cross the terahertz wave. When the liquid is first ejected from the tip of the injection needle, bubbles are mixed, so that the liquid is scattered and scattered around. Further, the liquid film 34 is covered with a shielding container 35 made of a material transparent to the terahertz wave 33 in order to isolate it from the vacuum region in the container. As a material of the shielding container 35, polypropylene, polyethylene, glass or the like is used.

A liquid damper 36 joined so as not to break the vacuum is added to the tip of the shielding container 35. The liquid film 34 converges on a string-like fluid column at the tip portion of the film. This fluid column has a flow velocity, and if it collides with the surrounding container wall as it is, the liquid is likely to scatter and contaminate the measuring device. Therefore, the liquid damper 36 disposed on the axis of the liquid film 34 receives the portion of the string-like fluid column while decelerating to prevent the liquid from scattering.

The liquid decelerated by the liquid damper is guided to the liquid collection tank 38 through the pipe 37. The pipe 37 and the liquid collection tank 38 are small enough to be placed in the vacuum container.
Next, the liquid scattering prevention shutter 39 will be described. When the liquid film 34 is ejected for the first time, or when the liquid film 34 is finally terminated by ejecting all of the liquid as the sample, there is a high possibility that the liquid will scatter around. If the liquid scatters on the axis traversed by the terahertz wave 33, the liquid crystal cannot be measured. Therefore, the inside of the shielding container 35 must be protected from the liquid scatter.

Therefore, a liquid scattering prevention shutter 39 as shown in FIG. 11B is disposed inside the shielding container 35. The shutter 39 is provided with a beam passage hole 40 having a size that does not obstruct the passage of the terahertz wave 33. By rotating the shutter 39 by 90 degrees, the inside of the shielding container 35 through which the terahertz wave 33 passes can be protected from scattering of the liquid at the timing of generation and termination of the liquid film 34. It is assumed that the rotation of the shutter 39 can be operated without breaking the vacuum by using a rotation lever 41 outside the flange 31 using a known technique such as a coupling mechanism using a magnet.

FIG. 12 shows another form for disposing a liquid film as a sample in the vacuum vessel. Most of the parts are the same as the apparatus described in FIG. The liquid collected by the liquid damper 36 is led out of the flange 31 by the pipe 42 and discharged. With such a structure, when there is a large amount of liquid as a sample, measurement can be performed without the need for a liquid collection tank inside the vacuum vessel. Further, terahertz wave spectroscopic measurement can be performed when a liquid as a sample is continuous.

FIG. 13 shows a configuration of an apparatus that realizes a function of pushing a piston 30 of a syringe at a constant speed for a fixed time by electronic control in a general spectroscopic apparatus, particularly a terahertz wave spectroscopic apparatus, using a syringe 26. . It is assumed that the shielding container 35 described with reference to FIG. 11 is attached to the inside of the flange 31 (inside the vacuum container) according to the application. A syringe drive holder 43 for attaching the syringe 26 main body and the syringe drive unit 44 is attached to the outside of the flange 31.

The syringe drive holder 43 has a support groove 45 in which syringes of various sizes can be arranged, and a flange insertion port 46 corresponding to each size is prepared. After the syringe 26 is installed, the end 47 of the syringe is pushed into the flange insertion port 46. The flange insertion port 46 is devised to maintain the degree of vacuum inside the flange 31 by closely contacting the diameter of the syringe 26 using an O-ring or the like at the joint portion.

The syringe drive unit 44 has a function of moving the drive shaft 48 forward or backward by a motor with a reduction gear incorporated therein. The drive unit 44 has a structure that can be easily attached and detached by a syringe drive holder 43 and a connection pin 49. When the syringe drive holder 43 and the syringe drive unit 44 are connected, the drive shaft 48 can push the piston 30 of the syringe at a constant speed for a fixed time.

Control of the pushing time and pushing speed of the drive shaft 48 can be appropriately set by the electronic control unit 50 connected to the drive unit 44 according to the viscosity of the liquid sample, the absorption rate of the terahertz wave, and the like.

FIG. 14 shows an example in which a syringe drive holder 43 is connected to a vacuum container 51 which is a part of the terahertz wave spectrometer.

With reference to FIG. 15, another embodiment regarding the use of the liquid film generated by the nozzle device will be described. As described with reference to FIG. 9, the liquid film generated by the nozzle section varies in shape depending on the pressure of the liquid fed into the nozzle section and the dimensions a and W of the nozzle opening defined in FIG. To do. For example, even in the same dimensions a and W, when the pressure of the liquid fed into the nozzle portion increases, the form shown in FIG. 9 is changed to the form shown in FIG.

As shown in FIG. 15, when the pressure of the liquid increases, the two string-like fluid columns 21 flowing in the z-y plane spread without gathering at one point. Between the two string-like fluid columns 21, three forms of a liquid film part 52, a liquid film boundary part 53, and a mist-like part 54 appear. The liquid film generated between the fluid columns 21 is formed by the surface tension generated between the fluid columns 21. When the pressure of the liquid increases, the film state due to surface tension cannot be maintained, and the film collapses. The liquid film boundary portion 53 is a portion where the film is just broken, and the portion where the liquid has changed to a mist shape as a result of the breakage is the mist portion 54.

When the liquid film maintained by the surface tension breaks, a phenomenon called cavitation occurs and a shock wave is generated. As a result, the liquid particle size in the mist 54 is very small.

In FIG. 16, the form which applies this foggy part positively is demonstrated. By increasing the pressure of the liquid applied to the nozzle portion, a state in which a mist-like portion 54 as shown in FIG. 15 is always generated is created, thereby utilizing the characteristics of the mist state of the liquid generated by the shock wave.

FIG. 16 shows a form of a liquid sterilizer used for beverages and the like. A liquid contaminated with Escherichia coli or the like is guided from a solution tank 55 that accumulates liquid to a large nozzle portion 58 by a pressure pump 57 via a pipe 56. A closed circuit is constructed in which liquid is collected in a container 59 having a size that does not interfere with the liquid film boundary generated from the large nozzle portion and returned to the solution tank 55 again.

An irradiation window 60 using a material such as quartz glass that allows ultraviolet light to pass through is installed in a part of the container 59. A structure is prepared in which ultraviolet light 62 emitted from an ultraviolet light source 61 such as an ultraviolet LED is applied to the liquid mist 63 inside the container from the outside of the window 60.

In the mist-like portion, liquid is generated by cavitation, and a shock wave is generated at that time. Since this shock wave has an effect of destroying cell membranes such as Escherichia coli, living E. coli in the liquid inside the solution tank 55 is reduced by circulating the liquid. Furthermore, the present invention provides a liquid sterilization apparatus having a double sterilization function, in which a sterilizing portion having an increased surface area is irradiated with ultraviolet rays, thereby adding a sterilizing effect by ultraviolet rays.

FIG. 17 shows a form of making a liquid screen using a liquid film generating nozzle. A liquid film generating nozzle 64 having a pipe diameter of several centimeters or more is produced, and the liquid film generating nozzles 64 are arranged at regular intervals on a linear pipe 66 that guides the liquid 65. At this time, the installation angles of the nozzles are adjusted so that the respective liquid films 68 just overlap and the liquid surface and the liquid surface are continuous. Each nozzle 64 is provided with a variable valve 67 to adjust the amount of liquid shared with the nozzle portion. By adjusting the valve 67 and correcting the difference due to the nozzle processing tolerance and the pressure difference of the liquid depending on the length of the pipe 66, the liquid film 68 by each nozzle becomes the same level. adjust. As a result, a liquid screen 69 is formed.

The present invention makes it possible to produce an equivalent liquid film by a simple means of crushing and cutting without using the complicated and dirty processing means used in the manufacture of conventional liquid film nozzles. is there.

The simple processing means provided by the present invention can easily perform processing having a liquid film generating function on a thin diameter tube such as an injection needle or a tube having a diameter of 10 centimeters or more. Become. As a result, liquid films of various sizes can be easily generated at low cost, and social effects such as physical and chemical research purposes and application to the entertainment industry are great.

The simple processing means of crushing and cutting according to the present invention makes it possible to avoid processing processes and dirt after processing that are unavoidable with conventional processing methods, so a liquid film that requires ultra-high purity. This can be used for spectroscopic measurement with a liquid film that suppresses the mixing of impurities, and the present invention has a particularly large industrial effect.

Furthermore, since the liquid film nozzle according to the present invention can be manufactured cleanly and at a low cost and is also suitable for mass production, the sterilization function by the generation of cavitation is utilized to sterilize E. coli contained in water for beverage purposes. It is also possible to apply to a device that has a great effect on the beverage and food industries.

Also, the nozzle processing means according to the present invention enables the production of large nozzles at low cost. By arranging a plurality of nozzles in a line, it is possible to create a large-sized liquid film screen that can continuously connect liquid films and project moving images, and can also be expected to have a ripple effect on the entertainment industry.

Claims (13)

A liquid film nozzle device for converting a liquid into a plate-like liquid film having a flat surface,
At one end of the cylindrical tube, it has a close contact portion where the inner surface is in close contact with the flat surface, and the inner surface of the tube is inclined until it reaches the close contact portion,
A cutting shape having a taper shape in which the width gradually decreases from the tip of the tight contact portion to a joint line that is a boundary line between the internal space of the tube and the tight contact portion to reach the internal space of the tube. A liquid film nozzle device, characterized in that a wide opening through which the liquid is ejected from the internal space is formed by the opening cut surface on the internal space side of the cut shape. The ratio of the length L of the joint line to the length W of the opening cut surface parallel to the joint line is approximately 20: 1;
2. The liquid film nozzle device according to claim 1, wherein a ratio of a width a of the opening cut surface and a length W of the opening cut surface parallel to the joining line is approximately 1: 3. The inclination angle θ of the inner surface reaching the contact portion in the inner space of the tube with respect to the center reference surface inside the tube is in the range of 15 to 20 degrees,
3. The liquid film nozzle device according to claim 2, wherein an inclination angle φ of each side cut surface forming the tapered shape of the cut shape with respect to a center line of the tube is about 20 degrees .   An injection needle characterized in that the liquid film nozzle device according to any one of claims 1 to 3 is formed at a tip. A syringe body;
A syringe comprising the injection needle according to claim 4 connected to the syringe body. A vacuum vessel;
A syringe according to claim 5;
A vacuum flange connecting the syringe to the vacuum container so that the liquid film generated from the liquid ejected from the syringe crosses the terahertz wave propagating across the vacuum container. A syringe-type liquid film generator. A syringe drive unit having a drive shaft capable of pushing the piston of the syringe at a constant speed for a fixed time;
The syringe-type liquid film production | generation apparatus of Claim 6 further equipped with the electronic control apparatus which controls the extrusion time and extrusion speed of the said drive shaft. The syringe-type liquid film according to claim 6 or 7, further comprising a shielding container that is made of a material transparent to the terahertz wave and covers the periphery of the liquid film in a vacuum region in the vacuum container. Generator. A liquid scattering prevention shutter disposed inside the shielding container and having a beam passage hole for allowing the terahertz wave to pass through;
The liquid scattering prevention shutter is protected from scattering of the liquid to the inside of the shielding container through which the terahertz wave passes by rotating at the generation start and generation end timing of the liquid film. Item 9. The syringe-type liquid film generator according to Item 8. The liquid film nozzle device according to any one of claims 1 to 3,
A pressure pump that collapses the liquid film to increase the pressure of the liquid fed into the liquid film nozzle device to generate a mist of the liquid;
A liquid sterilization apparatus comprising: an ultraviolet light source that irradiates the mist-shaped part with ultraviolet light. A solution tank for storing the liquid fed into the liquid film nozzle device;
The liquid sterilizer according to claim 10, further comprising a closed circuit that collects the liquid in the mist and returns the liquid to the solution tank.   A plurality of liquid film nozzle devices according to any one of claims 1 to 3, wherein the plurality of liquid film nozzle devices are arranged in a straight line, and a plurality of liquid film nozzle devices generated by the plurality of liquid film nozzle devices. An apparatus for forming a liquid screen, wherein a liquid screen is formed by connecting the liquid films so as to overlap each other to form one liquid film surface. A liquid film nozzle device manufacturing method for converting a liquid into a plate-like liquid film having a flat surface,
A first step of crushing one end of the tubular tube to form a close contact portion whose inner surface is in close contact with the one end, and inclining the inner surface to the close contact portion in the internal space of the tube; ,
A cutting shape having a taper shape in which the width gradually decreases from the tip of the tight contact portion to a joint line that is a boundary line between the internal space of the tube and the tight contact portion to reach the internal space of the tube. And a second step of forming a wide opening through which the liquid is ejected from the internal space by an opening cut surface on the internal space side of the cut shape. Manufacturing method of membrane nozzle device.