KR200420324Y1 - Nozzle having hollow needle for electrospray - Google Patents

Abstract

The present invention, in the construction of an electrospray multi-nozzle having hollow needles, facilitates the coupling and removal of the hollow needles to the nozzle body, and the hollow needles for uniform injection flow of the solution discharged from the hollow needles ( The hollow needles (1, 2, 3, 4, 5, 9, 10) having a sleeve by forming a hollow tube (sleeve) 1 (b) on the outer side of the 1 (a) nozzle nozzle (7, 11) The inner needle is closed and the hollow needles (1, 5, 9, 10) having no solution flow are configured at the sock ends of the hollow discharge needles (2, 3, 4) arranged in a row on the nozzle body. Disclosed is an electrospray multiple nozzle (7, 11) characterized by.

Hollow needle, hollow tube, nozzle, multiple nozzle, electrospray

Description

Nozzle having hollow needle for electrospray

1 is a view illustrating a configuration process of a nozzle constituting a hollow needle including a hollow tube (sleeve) on a nozzle body according to the present invention, and a circular electrospray multi-nozzle having a plurality of hollow needles having a sleeve; .

2 is a view illustrating a rectangular multiple nozzle having a plurality of hollow needles including a sleeve according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

1 .... Nozzle 1 (a) with hollow needle .... hollow needle

1 (b) ... Hollow tube (sleeve) 1 (c) ... Nozzle body hole

8 (a), 8 (b) ... plate square pin

1,2,3,4,5,9,10 ... Hollow needle with sleeve 7, 11 .... Nozzle body

The present invention relates to an electrospray nozzle having a hollow needle, which has a hollow tube (sleeve) between the hollow needle and the nozzle body to facilitate the coupling and replacement of the needle to the nozzle body, and sprayed by applying a high voltage to the solution. When the present invention relates to an electrospray multiple nozzle that can maintain a uniform spray flow of the solution.

Electrospray nozzles with hollow needles have been used for the production of nanostructures such as nanoparticles and nanofibers (Korean Patent Application No. 10-2002-0034856) or for ultra-precision spray nozzles for coating functional materials onto substrates.

The nozzle having the hollow needle basically forms a hollow needle directly coupled to the nozzle body.

According to the conventional method of constructing a nozzle having hollow needles, according to the Republic of Korea Patent Publication No. 10-2005-0094918, the hollow needles are formed by forcibly injecting the hollow needles into the hole body, or after joining the hollow needles, It consists of a method of bonding by bonding the bonding portion to prevent leakage from occur in the configuration.

However, in the conventional nozzle configuration, since the hollow needle is forcibly pressed into the nozzle body when the nozzle body is metal, there is a problem that it is difficult to replace only the needle when the needle is clogged, contaminated, and damaged during operation. . When injecting a hollow needle with a fine diameter into the nozzle body of a hard material such as a metal, the needle bends or breaks frequently due to a forced indentation, thereby making it difficult to manufacture a multi-nozzle having a fine diameter of 0.3 mm or less. There is this.

In addition, when the nozzle body is a fluorine-based material such as Teflon or a polymer plastic material such as polypropylene is forced to press the hollow needle several times, there is a problem that the hole is large or the nozzle body is damaged.

On the other hand, when manufacturing a nanostructure such as nanofibers by applying a high voltage to the nozzle body consisting of multiple hollow needles, or when spraying a functional material for coating a thin film, the injection flow due to mutual repulsion due to the charge characteristics of the solution This is a non-uniform state. In particular, the injection flow of the outer portion of the hollow needle has a problem in that the state of the injection is not only uneven, but also the thickness of the product is non-uniform while showing a form that extends to the outside.

The present invention has been devised to solve the above problems, in the configuration of a multiple nozzle consisting of a plurality of hollow needles to facilitate the coupling and replacement of the hollow needle to the nozzle body, the hollow body that can protect the nozzle body The object is to provide a multiple nozzle with a needle.

In addition, another object of the present invention is to provide an electrospray multi-nozzle for achieving a uniform injection.

The present invention as a technical configuration for achieving the above object, in constructing an electrospray multi-nozzle consisting of a plurality of hollow needles, by coupling a hollow tube (sleeve) to the outer side of the hollow needle as a hollow needle having a sleeve The hollow needle of the sock end among the hollow needles arranged in the nozzle body and arranged in a line in the nozzle body is provided with the electro-injection multi-nozzle, characterized in that the hollow needles have a closed structure so that the solution does not flow. do.

Hereinafter, described in detail based on the accompanying drawings of the present invention is as follows.

1 shows a hollow tube (hereinafter, a sleeve) 1 (b) coupled to an outer side of the hollow needle 1 (a), to form a hollow needle 1 including a sleeve in the nozzle body 7. The configuration process of, and the hollow needle (1, 2, 3, 4, 5) including a sleeve is shown a circular multi-nozzle and a cross-sectional view consisting of a plurality.

The multiple nozzle shown in FIG. 1 consists of hollow needles 2, 3, 4 for discharging a solution and hollow needles 1, 5 with needles closed for uniformly controlling the flow of the solution.

Referring to the characteristics of the multi-nozzle consisting of hollow needles as follows.

In the method of constructing the multi-nozzle, first, the sleeve 1 (b) is formed on the outer side of the hollow needle 1 (a), and then the components 1, 2, 3, 4, and 5 are connected to the nozzle body 7. The process of press-fitting into the hole 1 (c) of ().

The hollow needle 1 (a) according to the present invention is provided by cutting a diameter pipe of 0.05 to 4 mm, a diameter of 0.001 to 3 mm, a length of 0.1 to 50 mm, or a diameter of a microscopic tube. Ultra-fine hollow needles may be provided with pipes or tubes having an outer diameter of 0.4 mm and an inner diameter of 0.2 mm or less. Preferred hollow needles have a length of 2-30 mm.

The hollow needle 1 (a) is preferably made of stainless steel (SUS), silica, and a fluorine-based polymer. Fluorine-based polymers include polytetrafluoroethylene [PTFE (poly (tetrafluoroethylene)], ethylenetetrafluoroethylene [ETFE (ethylene-tetrafluoroethylene)], ethylenechlorotrifluoroethylene [ECTFE (ethylene-chlorotrifluoroethylene)], polychlorotrifluoroethylene [ PCTFE (poly (chlorotrifluoroethylene))], fluorinated ethylene propylene [FEP (fluorinated ethylene propylene)], perfluoroalkoxyalkanes [PFA (perfluoro alkoxy alkane)], and polyether ether ketone [PEEK (poly ( etheretherketone))], poly (phenylene sulfide)], polyetherimide [PEI (poly (etherimide)], polyethylene (poly (ethylene))] type, polypropylene (poly (propylene))], Nonmetallic materials such as PEEK / silica may be used.

The shape of the tip of the hollow needles 2, 3, 4 through which the solution is discharged is composed of a pointed end or a blunt end. In this case, the corner angle of the blunt smooth end may be formed of a tip angled at 90 degrees, or a chamfered tip with rounded corners, or a tapered tip with tapered tips. Preferred tips of the tip are pointed, rounded or tapered.

On the other hand, in the configuration of a multiple nozzle consisting of a plurality of hollow needles of the nozzle body, when spraying by applying a high voltage, the needle inside is closed in order to control the flow of the solution evenly the hollow needle without the flow of the solution (Fig. 1 1 and 5) are respectively configured on the sock end of the hollow needles arranged in a row on the nozzle body. At this time, the hollow needle is the same as the hollow needle having an adjacent sleeve, but any part of the hollow needle, that is, the inlet portion, the outlet portion, or the middle portion of the hollow needle is closed to form a state in which the inside is blocked. .

The state of the hollow needles (1 and 5 of FIG. 1) configured at the sock end is composed of the hollow needles themselves without deformation, except for the structure in which they are blocked, or the whole or part of the protruding parts from the nozzle body It has a flat plate-like structure, or has a rectangular fin-shaped structure, or a circular fin-shaped structure. As another configuration, square pins, or plate-shaped pins (8 (a) and 8 (b) of FIG. 1) may be inserted into the ends of the hollow needles to be integrally formed together. At this time, the control hollow needle (1 and 5 of Figure 1) protruding from the nozzle body is 1 to 5mm in width, 1 to 50mm in height. The length is 0.5-10 mm longer than or equal to the length of the hollow needles 2, 3, 4 in which the adjacent solution is discharged.

The sleeve 1 (b) formed on the outer side of the hollow needle is preferably a hollow hollow polymer tube having ductility and elasticity. The material of the hollow tube is perfluoro alkoxy alkane (PFA), polytetrafluoroethylene (PTFE (poly (tetrafluoroethylene))], fluorine-based polymer, polyetheretherketone (PEEK (poly (etheretherketone)), poly Material of any one of polymers such as phenylene sulfide (poly (phenylene sulfide)), polyetherimide [PEI (poly (etherimide)], polyethylene [poly (ethylene))], and polypropylene (poly (propylene))] Hollow tube made of a polymer material may be provided. Preferably it is a flexible hollow tube of chemical resistance, such as PFA, PTFE, PEEK. In addition, in order to impart conductivity between the hollow needle and the nozzle body, a hollow tube made of a conductive polymer material containing carbon and a metallic component may be provided as a sleeve. At this time, the inner diameter of the sleeve is easy to insert the hollow needle, and also, it is preferable to use a hollow tube having the inner diameter equal to or smaller than the outer diameter of the hollow needle to have excellent adhesion. The inner diameter of the sleeve is preferably 0.05 to 4 mm and the outer diameter is 1 to 5 mm.

The material of the nozzle body 7 according to the present invention is made of stainless steel (SUS), copper, plated with aluminum, nickel or chromium, or brass with nickel or chrome depending on the type of solution to be discharged, and Teflon. Non-metallic properties such as fluorine-based polymers, polyethylene-based, polypropylene-based, acetal, nylon-based, polyester-based and the like.

The nozzle body 7 has a hole 1 (c) so that hollow needles having a sleeve on the outside thereof can be press-fitted. Holes can be drilled or machined to a certain depth. The diameter of the hole is equal to or smaller than the outer diameter of the sleeve so that the sleeve composed of hollow needles is easily press-fitted into the machined hole, and thus has a strong adhesion after the press-fitting so that no leakage occurs. If the outer diameter of the sleeve is taken into consideration, it is preferable that the size of the hole has a diameter of 1 to 5 mm. At this time, it is preferable that the inlet of the hole is slightly grooved to facilitate insertion of the sleeve. The solution inlet 6 into which the solution is injected is preferably configured as a LuerLock type of two-row screws.

The hollow needle 1 (a), the sleeve 1 (b) and the nozzle body 7 having the above characteristics are constituted by a nozzle having the hollow needle by the following indentation process.

Firstly, a sleeve cut to fit the depth of the hole of the nozzle body coincides with the end of the hollow needle or inserted at an appropriate point to form an integrated body (1), and then secondaryly (1) to the hole of the nozzle body. After slightly press-fitting into (1 (c)), the nozzle is pushed strongly in 3rd order to manufacture a nozzle integrally formed. At this time, although not shown, the press-in of the nozzle including the sleeve may be made by mounting a jig having a hole designed to be larger than the outer diameter of the hollow needle and smaller than the outer diameter of the sleeve and longer than the length of the hollow needle in the press. Meanwhile, the sleeve may be manufactured by first inserting the sleeve into the nozzle body and then pressing the hollow needle into the sleeve.

The tolerance between the components of the hollow needle 1 (a), the sleeve 1 (b) and the nozzle body hole 1 (c) is as follows. The tolerance between the outer diameter of the hollow needle and the inner diameter between the sleeves is preferably set to ± 0.001 to ± 0.5 mm, and the tolerance between the outer diameter of the sleeve and the hole diameter of the nozzle body is preferably set to ± 0.001 to ± 0.5 mm.

On the other hand, when a high voltage is applied, the first and last sock end hollow needles (1 and 5 of FIG. 1) are configured to be energized with the same polarity as that applied to the solution. At this time, the range of the high voltage is a direct current power source, which is 1,000 to 100,000 volts.

2 illustrates a rectangular multiple nozzle 10 having a plurality of hollow needles including a sleeve.

As described above, in constructing a plurality of hollow needles, the hollow needles 9, the inner needle of which is blocked at the end of the sock end of the hollow needles arranged in a row to obtain a uniform flow of the solution when high voltage is applied 10) is configured on the nozzle body 11, respectively.

The manufacturing method of the multiple nozzle is as described above. If the outer diameter of the jig is larger than the gap between the hollow needles to be inserted, a jig having multiple holes may be used. Multi-nozzle is preferably configured to the spacing between the hollow needle 1 to 100mm. In this case, the hole arrangement may be configured in a line array, a circular array, or a plurality of grid arrays to suit the intended use. In order to control the flow of the injection solution, the installation positions of the hollow needles of the inner-closed structure respectively installed at both ends of the hollow needles arranged in a row are preferably configured to be 1 to 100 mm from the hollow teeth for discharging the adjacent solution.

The multi-nozzle according to the present invention may be provided with a sealing plug (not shown) to seal a hole not used after the hole processing. From this, it is possible to configure various arrangements and spacings between needles such as zigzag, linear, and circular shapes using one nozzle body.

When the hollow needle is replaced by clogging and damage, a means for pushing the hollow needle-coupled sleeve away from the nozzle body by using a jig having a diameter smaller than the outer diameter of the sleeve when pressing the hollow needle into the nozzle body may be provided. have.

The multi-nozzle manufacturing method can be applied to the case of manufacturing a double nozzle in which the hollow needle is composed of a double.

According to the present invention as described above, by forming a flexible polymer hollow tube on the outer side of the hollow needle can simplify the indentation and removal of the hollow needle to the nozzle body can easily produce a nozzle having a fine diameter hollow needle Can be. In addition, by constructing hollow needles each of which is blocked in the sock end of the hollow needles arranged in a line, when a high voltage is applied, the flow of the solution may be uniformly induced.

From the present invention, it is possible to easily manufacture a multi-nozzle consisting of a plurality of hollow needles that can implement a variety of spacing and arrangement between the needles. In addition, it is easy to replace the hollow needle during clogging, contamination and damage of the hollow needle.

Claims (11)

The hollow needle having a hollow tube (sleeve) on the outside is configured in the nozzle body, the hollow injection nozzles are characterized in that the hollow needles are formed in the sock end of the hollow needles arranged in a line, respectively. According to claim 1, wherein the hollow needles formed at both ends of the multi-nozzle, the hollow needle, or the whole or part of the portion protruding from the nozzle body is flat plate shape, square pin shape, or round pin shape Multi-nozzle characterized by consisting of hollow needle having a form. 2. The hollow needle of claim 1, wherein the hollow needles formed at both ends of the multi-nozzle have a width of 1 to 5 mm, a height of 1 to 50 mm, and a length of 0.5 to 10 mm longer than or equal to the length of the adjacent solution discharging hollow needles. Multi-nozzle characterized by consisting of hollow needles. The multiple nozzle according to claim 1, wherein the interval between the hollow needles constituting the multiple nozzle is 1 to 100 mm. The hollow needle of claim 1, wherein the hollow needles formed at both ends of the multi-nozzle have a structure in which any one of the inlet, the outlet, and the middle portion into which the solution is injected is blocked. The nozzle according to claim 1, wherein the hollow needles, which are energized with the same polarity as the polarity of the solution, are configured at both ends of the multi-nozzle when the high voltage is applied to the solution. The nozzle of claim 1, wherein a high voltage applied to the multi-nozzle is applied to a DC power source of 1,000 to 100,000 volts. The method of claim 1, wherein the discharge end of the hollow needle is made of a pointed end, or a blunt smooth end, wherein the corner angle of the blunt smooth end is a 90 degree angled tip, or a chamfered tip rounded corners, or Hollow needle characterized by a tapered tip tapered tip. The method of claim 1, wherein the material of the flexible hollow tube consisting of a sleeve of the hollow needle is perfluoroalkoxy alkanes [PFA (perfluoro alkoxy alkane)], polytetrafluoroethylene [PTFE (poly (tetrafluoroethylene)), fluorine-based polymer, polyether Ether ketone [PEEK (poly (etheretherketone))], polyphenylene sulfide (poly (phenylene sulfide)), polyetherimide [PEI (poly (etherimide)], polyethylene [poly (ethylene))], polypropylene [ poly (propylene))] is a hollow tube characterized by consisting of any one of the polymer materials. The nozzle according to claim 1, wherein the inner diameter tolerance between the outer diameter of the hollow needle and the sleeve is ± 0.001 to ± 0.5 mm, and the tolerance between the outer diameter of the sleeve and the hole diameter of the nozzle body is ± 0.001 to ± 0.5 mm. The inner diameter of the hollow needle is an outer diameter of 0.05 to 4 mm, an inner diameter of 0.001 to 3 mm, a length of 0.1 to 50 mm, a microscopic pipe or a microscopic tube, and the inner diameter of the sleeve is 0.05 to 4 mm, the outer diameter is 1 to 5 mm. Hollow needle comprising a sleeve characterized in that.

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