JP2016097401A - Two-fluid injector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel and improved two-fluid injector in which an injection part can be easily separated and assembled.SOLUTION: A two-fluid injector includes: a housing which is connected to a housing body and seals a second inflow space part; a head part 210 in which an upper part which is provided with a vertically penetrating hollow part and penetrates a first inflow space part and which is so coupled to an upper part of the housing body that the hollow part is communicated with the second inflow space part and a second fluid is supplied to the hollow part from the second inflow space part, an intermediate part 212 which is coupled to a lower part of the housing body and is provided with a first fluid supply hole 212a which is communicated with the first inflow space part and is so formed as to be long in a vertical direction, and a lower part are integrally formed, and by which the first fluid and the second fluid are respectively separated from the housing and are supplied; and a second injection part 220 which is separably coupled to the head part and by which the first fluid supplied to the first fluid supply hole and the second fluid supplied to the hollow part are mixed and are injected.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a two-fluid ejection device.

  Generally, the nozzle is used for spraying a liquid, and can be divided into an internal mixing spray nozzle and an external mixing spray nozzle according to a position where the sprayed liquid is mixed with air. Such nozzles are used in various fields throughout the industry.

  Recently, the use of a two-fluid injection nozzle that sprays an injection liquid mixed with a gas so that the injection surface area can be expanded as well as the injection efficiency has been gradually increasing. In such a two-fluid injection nozzle, since the injection liquid is injected into the gas in the form of smaller particles, the region to which the injection liquid is applied can be further expanded.

  In particular, the two-fluid injection nozzle is more frequently used in processes such as vapor deposition, lithography, etching, chemical / mechanical refining, cleaning, and drying when producing a semiconductor substrate.

Korean Registered Patent No. 10-1389733

  By the way, since the conventional two-fluid injection nozzle as described above has to supply the injection liquid and the gas at the same time in order to inject the injection liquid, if the hydraulic pressure for supplying any one fluid becomes larger However, there is a problem in that the fluid flows backward or the ejection of the fluid cannot be smoothly achieved.

  Further, in the conventional two-fluid injection nozzle, a housing into which a fluid flows is formed in a tube shape, and a head coupling surface is formed by cutting the housing to couple a plurality of nozzle heads to the tube-shaped housing. Further, the strength of the housing is lowered, and there is a problem that the length of the housing cannot be formed long.

  In order to improve such a problem, the present applicant prevents the strength of the portion to which the head is coupled from decreasing, and prevents the backflow of the fluid due to the hydraulic pressure difference, and the injection nozzle housing The two-fluid injection device used has been developed, and is disclosed in Korean Patent No. 10-1389733 (Invention name: injection nozzle housing and two-fluid injection device using the same). To FIG.

  The injection nozzle housing 10 disclosed in the patent includes a main body 13 having a hollow shape, and a reinforcing portion 15 that protrudes from the main body 13 and to which a head 43 that injects fluid is coupled. The fluid inflow space portions 11 are formed in the portions 15, respectively. The fluid inflow space portions 11 are formed in the first inflow space portion 11 a formed in the main body 13 by the hollow of the main body 13 and the reinforcing portion 15. The main body 13 is formed such that the reinforcing portion 15 is formed with a first reinforcing rib 15a protruding from a lower end portion of the main body 13 and the second inflow space portion 11b. The second reinforcing rib 15b is formed so as to protrude from the upper end of the second reinforcing rib 15b.

  In addition, the two-fluid ejection device using the ejection nozzle housing disclosed in the above-mentioned patent is any one of the housing 10 forming the two fluid inflow space portions 11 and the fluid inflow space portion 11. A first cover portion 20 that is coupled to the housing 10 to supply fluid to the two fluid inflow space portions 11 and covers any one of the fluid inflow space portions 11; A second cover portion 30 coupled to the housing 10 to cover the other fluid inflow space portion 11 so as to supply fluid to the other fluid inflow space portion 11, and the fluid inflow space portion 11. Each of which has a flow passage communicating therewith and is coupled to the housing 10 and includes an injection nozzle 40 for simultaneously injecting different fluids through each flow passage. The groove 10 has a hollow shape, and includes a main body 13 that forms the first inflow space portion 11a by the hollow, and a reinforcing portion 15 that protrudes from the main body 13 and forms the second inflow space portion 11b. The portion 15 includes a first reinforcing rib 15a that protrudes from the lower end portion of the main body 13 and a second reinforcing rib that protrudes from the upper end portion of the main body 13 so that the second inflow space portion 11b is formed. 15b is included.

  At this time, the ejection nozzle 40 includes a first flow path 41a, and a head 43 coupled to the housing 10 so that the first flow path 41a communicates with any one of the fluid inflow space portions 11, and a second. A connection member 45 that includes a flow path 41 b, extends from the head 43 so that the second flow path 41 b communicates with the other fluid inflow space 11, and is coupled to the housing 10 through the head 43. Consists of.

  The head 43 is integrally formed with a connecting member 45, and a head main body 43a coupled to the housing 10, an ejection part 43b coupled to an end of the head main body 43a, and the ejection part 43b are connected to the head main body 43a. The fixing portion 43c is screwed to the head body 43a so as to be fixed.

  In addition, the ejection unit 43b is connected to the head main body 43a so that the two fluids are separated while being supplied, and the separation supply cap 43b ′ and the separation supply cap 43b ′ include the head main body 43a. And a jet cap 43b ″ that covers the lower portion of the head main body 43a so that the two fluids supplied from the separation supply cap 43b ′ are mixed and jetted.

  With such a configuration, the liquid is ejected by the ejection unit 43b coupled to the head main body 43a, and after the ejection nozzle operation is stopped, the liquid remains in the ejection unit 43b in the form of droplets. Since the ejecting portion 43b is exposed to the outside, when it is not used for a long period of time and is restarted, the ejecting portion 43b may be clogged due to the liquid remaining in the ejecting portion 43b being solidified. To do. In order to remove the solidified liquid from the ejecting portion 43b for re-operation, the fixing portion 43c screwed to the head main body 43a is completely loosened, and then the ejecting portion 43b, that is, the separated supply from the head main body 43a. The cap 43b ′ and the ejection cap 43b ″ are disassembled to perform a cleaning operation to remove the solid liquid, and the head main body 43a is joined with the ejection portion 43b, that is, the separation supply cap 43b ′ and the ejection cap 43b ″ to fix the fixing portion 43c. The ejecting portion 43b is fixed to the head main body 43a so as to be screwed to the head main body 43a.

  At this time, since the ejecting portion 43b is composed of the separation supply cap 43b ′ and the ejecting cap 43b ″, the fixing portion 43c is loosened in order to disassemble or assemble the head main body 43a and the ejecting portion 43b. When tightening, there is a case where the ejection unit 43b, that is, the separation supply cap 43b ′ and the ejection cap 43b ″ are separated from the head main body 43a.

  Accordingly, when the fixing portion 43c is loosened, the separation supply cap 43b ′ and the injection cap 43b ″ are likely to be separated from the head main body 43a and lost, and when the fixing portion 43c is tightened, the separation supply cap of the injection portion 43b is lost. 43b 'and the injection cap 43b "must be tightened in a state where they are coupled to the head main body 43a. However, since the injection nozzle is mostly installed in the downward injection form, the separation supply cap 43b' and the injection cap of the injection unit 43b 43b ″ cannot maintain the state where it is coupled to the head main body 43a, and it is always dropped, so that there is a problem that assembly is not easy and the possibility of loss is great.

  At the same time, the ejection nozzle housing 10 has to drill a fluid discharge hole 13 c so that the first fluid supplied to the first inflow space 11 a through the first fluid supply line 3 is supplied to the head body 13. At this time, at least two fluid discharge holes 13c are formed around the first communication hole 13a through which the connecting member 45 passes. Such a perforation can be formed by injection, but since it is a very small portion compared to the size of the injection nozzle housing 10, the injection pressure may not be reached during injection, so the fluid discharge hole 13c can be formed correctly. Therefore, there is a greater possibility that a defect will occur in the vicinity of the fluid discharge hole 13c. In order to reduce defects during injection, the housing 10 must be injected with a very large pressure.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved two-fluid jet capable of facilitating the separation and assembly of the jet section. It is in providing an injection device.

  A first inflow space portion that is formed in a hollow through the left and right is formed, and a first inflow space portion into which the first fluid flows is formed. A housing main body in which a second inflow space portion to flow in is formed, a housing composed of a sealing block that is coupled to the projecting portion of the housing main body and seals the second inflow space portion, and a hollow portion that penetrates vertically is formed. And passing through the first inflow space at the lower portion of the housing body, the hollow portion communicating with the second inflow space, and the second fluid being supplied from the second inflow space to the hollow portion. As described above, an upper part coupled to the upper part of the housing body and a lower part of the housing body are coupled to the lower part of the housing body, and a first fluid supply hole that communicates with the first inflow space is formed vertically long Middle and bottom Are integrally formed, and are coupled to and separated from a head part that separates and supplies the first fluid and the second fluid from the housing, and a coupling part provided at a lower part of the head part. The first fluid flowing into the first inflow space and supplied to the first fluid supply hole and the second fluid flowing into the second inflow space and supplied to the hollow portion are mixed and injected. An injection device for two-fluid injection is provided.

  A first coupling hole and a second coupling hole are formed at the upper and lower outer peripheral edges of the housing body, respectively, to which the upper part and the middle part of the head part are respectively connected. You may protrude upward along the outline of the upper part.

  The second coupling hole has a long hole shape so as to prevent the middle part of the head part to be coupled from rotating, and the middle part of the head part has a cross-sectional shape corresponding to the second coupling hole. May be.

  The coupling portion of the head portion has a diameter larger than that of the intermediate portion of the head portion, and a circular accommodating portion that communicates with the first fluid supply hole and the hollow portion is formed on the inner side, and is a lower portion of the circular accommodating portion. At the lower end of the coupling portion, a locking portion is formed extending inward so as to form a long hole together with the circular accommodating portion, and the injection portion includes a flat portion that passes through the locking portion and the circular shape. An elongated hole-shaped insertion portion configured to be inserted and accommodated in the accommodation portion and in contact with an inner peripheral edge of the circular accommodation portion; a nut portion formed separately from a lower portion of the insertion portion; and a lower portion of the nut portion Integrally formed with a screw portion formed on the lower portion of the screw portion and a separation supply portion that is formed at a lower portion of the screw portion and maintains the separated state of the two fluids supplied from the head portion and is supplied to the lower portion. And the insertion portion is rotated by the rotation of the nut portion. A first fluid communication hole and a second fluid communication hole are formed from the upper part to the lower part, which are connected to the coupling part of the head part over the locking part, and communicate with the first fluid supply hole and the hollow part, respectively. An injection cap that is coupled to a lower part of the separation supply unit of the injection unit main body, accommodates the separation supply unit, and mixes and injects the two fluids supplied from the separation supply unit; And an injection cap fixing portion that is screwed to the screw portion and fixes the injection cap in a state of being connected to a lower portion of the separation supply portion of the injection portion main body.

  A sealing insertion groove is formed at the upper end of the inner peripheral edge of the circular housing portion, and is inserted into the sealing insertion groove. When the insertion portion is coupled to the circular housing portion, it is pressure-bonded and supplied to the first fluid supply hole. A first sealing for preventing the first fluid from flowing out may be further provided.

  Even if a protruding insertion portion is formed in the upper center of the insertion portion so as to protrude upward, the second fluid communication hole is formed, and a protruding insertion portion that is inserted and coupled to the hollow portion of the head portion by loose fitting is formed. Good.

  The protruding insertion portion has a ring groove formed at an intermediate portion, and is coupled to the ring groove to prevent the second fluid supplied to the hollow portion from flowing out to the first fluid supply hole. A second sealing may be provided to do so.

  An annular edge protruding upward is provided on the upper outer portion of the insertion portion so that the first sealing provided in the circular receiving portion of the head portion can be crimped when the injection portion is coupled to the head portion. Further, it may be formed.

  The lower part of the arc part forms an angle of 90 degrees with the flat part so that when the nut part is rotated 90 degrees, the locking part is seated and the injection unit main body maintains a 90 degree rotation angle. A seating groove may be formed.

  The depth of the seating groove is such that the first sealing is 100 when the locking part is seated in the seating groove by rotating the nut part 90 degrees after the insertion part is coupled to the circular housing part. The engagement portion may be kept seated in the seating groove by the elastic restoring force of the first sealing so as to be shallower than the depth at which the elastic recovery is performed.

  As described above, according to the present invention, separation and assembly of the injection unit can be facilitated.

It is a figure which shows the injection apparatus for conventional 2 fluid injection. It is a figure which shows the injection apparatus for conventional 2 fluid injection. It is a figure which shows the injection apparatus for conventional 2 fluid injection. It is a figure which shows the injection apparatus for conventional 2 fluid injection. It is a disassembled perspective view which shows the injection apparatus for 2 fluid injection by this invention. It is sectional drawing which shows the injection apparatus for 2 fluid injection by this invention. It is a perspective view which shows the head part and injection part of the injection apparatus for two fluid injection by this invention. It is a perspective view which shows the state from which the head part and injection part of the injection apparatus for 2 fluid injections by this invention were isolate | separated. It is a disassembled perspective view which shows the head part and injection part of the injection apparatus for 2 fluid injection by this invention. It is a disassembled perspective view which shows the head part and injection part of the injection apparatus for 2 fluid injection by this invention. It is sectional drawing which shows the state with which the head part and the injection part of the injection apparatus for 2 fluid injection by this invention were couple | bonded. It is sectional drawing which shows the state with which the head part and the injection part of the injection apparatus for 2 fluid injection by this invention were couple | bonded.

  Hereinafter, an injection device for two-fluid injection according to the present invention will be described with reference to the accompanying drawings.

  FIG. 5 is an exploded perspective view showing a two-fluid injection device according to the present invention, FIG. 6 is a sectional view showing a two-fluid injection device according to the present invention, and FIG. 7 is a two-fluid injection device according to the present invention. FIG. 8 is a perspective view showing a state in which the head portion and the ejection portion of the two-fluid ejection device according to the present invention are separated, and FIG. 9 and FIG. FIG. 11 is an exploded perspective view showing a head part and an ejecting part of a two-fluid ejecting injection apparatus according to the present invention, and FIGS. 11 and 12 are combined with the head part and the ejecting part of the two-fluid ejecting apparatus according to the present invention. It is sectional drawing which shows a state.

  The injection device for two-fluid injection according to the present invention includes a housing 100 and an injection nozzle 200 including a head unit 210 and an injection unit 220.

  As shown in FIGS. 5 and 6, the housing 100 includes a housing body 110 and a sealing block 120.

  The housing body 110 is formed with a first inflow space portion 111 into which a first fluid flows, and a second inflow space portion 112 into which a second fluid flows. At this time, normally, air is used as the first fluid, the second fluid is liquid, and compressed air is supplied at a predetermined pressure to the first inflow space 111 into which the first fluid flows.

  The first inflow space 111 is formed to be hollow through the housing body 110 from side to side, and the second inflow space 112 is formed at an upper portion of the first inflow space 111. Is positioned in the space formed by the protrusion 113 protruding at the upper part of the outer peripheral edge.

  In addition, a first coupling hole 114 and a second coupling hole 115 to which an upper part 211 and an intermediate part 212 of the head part 210, which will be described later, are respectively coupled are formed on the upper and lower outer peripheral edges of the housing body 110, respectively. The protrusion 113 protrudes upward along the outline of the upper peripheral edge of the housing body 110.

  The sealing block 120 is coupled to the protrusion 113 of the housing body 110 and serves to seal the second inflow space 112 formed by the protrusion 113.

  An injection nozzle 200 is coupled to the housing body 110.

  As shown in FIG. 7, the spray nozzle 200 includes a head unit 210 and a spray unit 220.

  The head unit 210 serves to supply the first fluid and the second fluid separately from the housing 100.

  As shown in FIGS. 8 to 10, in the head part 210, an upper part 211, an intermediate part 212 and a lower part 213 are integrally formed, and a hollow part 214 penetrating vertically is formed.

  The upper part 211 of the head part 210 passes through the first inflow space part 111 at the lower part of the housing main body 110, and the hollow part 214 communicates with the second inflow space part 112, thereby the second inflow space part 112. The second fluid is coupled to the upper portion of the housing body 110 so as to be supplied to the hollow portion 214 (see FIG. 6).

  The upper portion 211 of the head portion 210 is formed with an insertion coupling portion 211a that is inserted and coupled to the first coupling hole 114 formed in the upper portion of the housing body 110, and the housing body is disposed at the lower end of the insertion coupling portion 211a. A step 211b is formed so as to be in contact with the lower end of the first coupling hole 114 of 110 (see FIGS. 6, 9, and 10).

  The insertion coupling portion 211a is a hollow space penetrating the housing body 110 of the second fluid supplied to the second inflow space portion 112 so as to be fitted and coupled to the first coupling hole 114, That is, it is preferable to prevent the first inflow space 111 from flowing out.

  At this time, the second fluid supplied to the second inflow space 112 is prevented from flowing out to the left and right hollow spaces of the housing body 110, that is, the first inflow space 111 above the step 211 b. As described above, a rubber ring (not shown) coupled to the insertion coupling portion 211a may be installed.

  The intermediate part 212 of the head part 210 is coupled to the lower part of the housing body 110, and a first fluid supply hole 212 a that communicates with the first inflow space part 111 of the housing 100 is formed in the outer periphery of the hollow part 214. (See FIG. 6).

  When at least two fluid discharge holes are formed in the injection nozzle housing so that any one of the different fluids is supplied to the head body, the fluid discharge holes are much smaller than the size of the injection nozzle housing. Unlike the conventional method that requires drilling, the first fluid does not have to be drilled separately, because the injection pressure does not reach the injection pressure and there is a high risk of failure during injection. The supply hole 212 a is formed in the head part 210. Further, the first fluid supply hole 212a may be formed without forming the head part 210 when the first fluid supply hole 212a is formed, and may be formed when the head part 210 is ejected. At this time, since the head part 210 is smaller in size than the housing 100 when the head part 210 is formed so as to form the first fluid supply hole 212a, the head part 210 is also ejected at the site where the first fluid supply hole 212a is formed. Since the pressure is evenly applied, the possibility of occurrence of defects is reduced, so that it can be formed by injection that is easy to manufacture. Accordingly, when the first fluid supply hole 212a is formed, the head part 210 is not perforated separately, and can be formed by injection that is easy to manufacture, so that productivity can be improved.

  The intermediate part 212 of the head part 210 is coupled to the lower part of the housing body 110, and the intermediate part 212 of the head part 210 is inserted and coupled to the second coupling hole 115 formed in the lower part of the housing body 110. (See FIG. 6).

  At this time, the second coupling hole 115 has a long hole shape so as to prevent the rotation of the intermediate part 212 of the head part 210 to be coupled, and the intermediate part 212 of the head part 210 corresponds to the second coupling hole 115. A cross-sectional shape (ie, a long hole shape) is preferable (see FIGS. 7 and 10).

  The intermediate portion 212 of the head portion 210 is fitted and coupled to the second coupling hole 115 to prevent the first fluid supplied to the first inflow space portion 111 from flowing out of the housing body 110. It is preferable to do so.

  A step (not shown) may be formed so that the lower end of the intermediate part 212 of the head part 210 is in contact with the lower end of the second coupling hole 115 of the housing body 110, and is inserted into the intermediate part 212 of the head part 210. A rubber ring (not shown) installed at the lower end of the intermediate portion 212 is installed to prevent the first fluid supplied to the first inflow space 111 from flowing out of the housing body 110. It doesn't matter. At this time, a caulking material such as a resin can be used instead of the rubber ring to prevent the first fluid from flowing out of the housing body 110.

  The lower part 213 of the head part 210 is provided with a coupling part 215. The coupling unit 215 is coupled with an injection unit 220 described later.

  The coupling part 215 of the head part 210 has a diameter larger than that of the intermediate part 212 of the head part 210, and a circular accommodating part 215 a communicating with the first fluid supply hole 212 a and the hollow part 214 is formed on the inner side. A locking part 215b is formed at the lower end of the coupling part 215, which is the lower part of the accommodating part 215a, and is extended inward so as to form a long hole together with the circular accommodating part 215a.

  An insertion portion 221a of the injection unit 220, which will be described later, is coupled and accommodated in the circular accommodation portion 215a.

  The ejection unit 220 is coupled to the coupling unit 215 of the head unit 210 and is separable. The first fluid flows into the first inflow space 111 and is supplied to the first fluid supply hole 212a. The second fluid that flows into the second inflow space 112 and is supplied to the hollow portion 214 is mixed and ejected.

  The injection unit 220 includes an injection unit main body 221, an injection cap 222, and an injection cap fixing unit 223.

  The injection unit main body 221 includes an insertion part 221a, a nut part 221b, a screw part 221c, and a separation supply part 221d, and is integrally formed. A first fluid communication hole 221e and a second fluid communication hole 221f through which the first fluid supply hole 212a and the hollow portion 214 communicate with each other are formed in the ejection unit main body 221 from the upper part to the lower part, respectively.

  The insertion portion 221a has a length composed of a flat surface portion 221a ′ that passes through the locking portion 215b and an arc portion 221a ″ that is inserted and accommodated in the circular accommodation portion 215a and contacts the inner periphery of the circular accommodation portion 215a. It becomes a hole shape.

  The nut part 221b is spaced apart from the lower part of the insertion part 221a. The nut portion 221b can be rotated by finger force, but is rotated by a tool such as a spanner when not used for a long time. The insertion portion 221a is coupled to or separated from the circular accommodating portion 215a of the coupling portion 215 by rotating the injection portion main body 221 integrally formed with the nut portion 221b by rotation. To.

  The screw part 221c is formed below the nut part 221b. The injection cap fixing part 223 is screwed to the screw part 221c.

  The separation supply unit 221d is formed at a lower part of the screw part 221c and serves to supply the lower part of the two fluids supplied from the head part 210 while maintaining a separated state.

  A protrusion insertion portion 221g is formed at the upper center of the insertion portion 221a so as to protrude upward, and the protrusion insertion portion 221g is inserted and coupled to the hollow portion 214. At this time, the second fluid communication hole 221f is formed so as to penetrate from the upper end of the projecting insertion portion 221g to the lower end of the ejection unit main body 221, and communicate with the hollow portion 214. In addition, it is preferable that when the protruding insertion part 221g is inserted and coupled to the hollow part 214, loose fitting is achieved. This is to facilitate separation when the ejection unit 220 is separated from the head unit 210.

  A ring groove 221i is formed at an intermediate portion of the protruding insertion part 221g, and a second sealing 221h is coupled to the ring groove 221i. The second sealing 221h includes a first fluid supplied to the hollow portion 214 and flows into the first fluid supply hole 212a to be supplied to the first fluid supply hole 212a. In order to prevent mixing, the second fluid serves to prevent the second fluid from flowing out to the outside.

  In addition, as will be described later, a first sealing 217 provided in the circular accommodating portion 215a of the head portion 210 when the ejection portion 220 is coupled to the head portion 210 is disposed on the upper outer portion of the insertion portion 221a. It is preferable that an annular edge 221j protruding upward is further provided so that can be crimped.

  In FIG. 11, the injection unit body 221 is rotated by the nut portion 221b so that the arc portion 221a ″ (see FIGS. 9 and 10) of the insertion portion 221a is engaged with the locking portion 215b and the coupling portion 215 of the head portion 210. FIG. 12 is a view showing a state where the injection unit main body 221 is rotated by the nut portion 221b so that the flat portion 221a ′ (see FIGS. 9 and 10) of the insertion portion 221a is shown. FIG. 10 is a diagram illustrating a state in which it can be separated from the coupling part 215 (see FIG. 9) of the head part 210 by being released from the locking part 215b.

  In the injection unit main body 221 having the above-described configuration, the arc portion 221a ″ of the insertion portion 221a is engaged with the engaging portion 215b by the rotation of the nut portion 221b and is coupled to the coupling portion 215 of the head portion 210. In addition, when the insertion portion 221a is engaged with the engaging portion 215b and coupled to the coupling portion 215 of the head portion 210 (see FIG. 11), the first fluid supply hole 212a and the hollow portion Each of the 214 communicates with the first fluid communication hole 221e and the second fluid communication hole 221f to supply the first fluid and the second fluid, respectively, through the first fluid communication hole 221e and the second fluid communication hole 221f. The first fluid and the second fluid respectively supplied are supplied to the ejection cap 222 while maintaining a state of being separated through the separation supply unit 221d of the ejection unit body 221. That.

  On the other hand, the injection unit body 221 can be separated from the coupling part 215 of the head part 210 by releasing the flat part 221a ′ of the insertion part 221a from the locking part 215b by the rotation of the nut part 221b (see FIG. 12). ) Is a state in which only the second fluid can be supplied through the second fluid communication hole 221f. Unlike the case of FIG. 11, the first fluid is in a state where the first fluid supply hole 212a does not communicate with the first fluid communication hole 221e. .

  The first fluid and the second fluid respectively supplied through the first fluid communication hole 221e and the second fluid communication hole 221f are maintained in a state of being separated through the separation supply unit 221d of the ejection unit body 221, and the ejection cap 222 is supplied.

  The ejection cap 222 is coupled to a lower part of the separation supply unit 221d of the ejection unit main body 221, and accommodates the separation supply unit 221d so that the two fluids supplied from the separation supply unit 221d are mixed and ejected. Play a role.

  The injection cap fixing part 223 is screwed to the screw part 221c and serves to fix the injection cap 222 in a state of being connected to the lower part of the separation supply part 221d of the injection part main body 221.

  As described above, according to the present invention, when the ejection unit 220 is coupled to the head unit 210 or separated from the head unit 210, the insertion unit 221a of the ejection unit main body 221 is rotated by the nut unit 221b. The whole of the ejection unit 220 is coupled to the head unit 210 by being coupled to the circular housing unit 215a of the 215 or separated from the circular housing unit 215a of the coupling unit 215 of the head unit 210. Separation from the head unit 210 becomes possible.

  When cleaning the ejection unit 220, the entire ejection unit 220 is separated from the head unit 210, and then the separated ejection unit 220 is disassembled and cleaned by loosening the ejection cap fixing unit 223. When the cleaning of the ejection unit 220 is completed, the assembly of the ejection unit 220 is assembled to the head unit 210 after the ejection unit 220 is assembled.

  As described above, the present invention is different from the conventional method of separating the ejection unit from the head unit while disassembling the ejection unit for cleaning the ejection unit, and then separating the entire ejection unit 220 from the head unit 210. By disassembling the injection unit 220, it becomes easy to separate the injection unit 220 from the head unit 210 and to disassemble the injection unit 220. When the injection unit 220 is disassembled, the disassembled parts are lost. The fear of disappears.

  In addition, the present invention is different from the conventional method in which the ejector is coupled to the head part while assembling the disassembled ejector parts after cleaning the ejector, and the disassembled parts of the ejector 220 are separated. Is assembled first, and the whole of the assembled ejection unit 220 is coupled to the head unit 210, so that the coupling is completed. Therefore, the assembly of the ejection unit 220 and the head unit 210 of the assembled ejection unit 220 are completed. Can be easily combined.

  In addition, according to the present invention, sealing is performed to prevent leakage of the first fluid to the outside at a portion where the head unit 210 and the ejection unit 220 are joined in contact with each other. For this purpose, as shown in FIGS. 9, 11, and 12, a sealing insertion groove 216 is formed at the upper end of the inner peripheral edge of the circular accommodating portion 215a, and is inserted into the sealing insertion groove 216. When the insertion part 221a is coupled to the 215a, a first sealing 217 that prevents the first fluid supplied to the first fluid supply hole 212a from flowing out to the outside is further provided.

  At this time, the first fluid supply hole 212a of the ejection unit 220 is formed so as to be positioned inside the sealing insertion groove 216 of the circular storage unit 215a.

  In addition, according to the present invention, the second fluid supplied from the hollow portion 214 of the head unit 210 to the ejection unit 220 flows out to the outside and is supplied to the first fluid supply hole 212a of the ejection unit 220. It is preferable to prevent contact with one fluid.

  As described above, according to the present invention, by supplying different types of fluids to the injection unit so that they do not mix with each other, and by being combined and injected by the injection cap of the injection unit, the fluid does not flow back and is stably supplied. There are advantages to be made.

  In addition, when the injection unit main body 221 of the present invention is coupled and fixed to the coupling unit 215 of the head unit 210, the nut unit 221b is preferably coupled and fixed by rotating the nut unit 221b by 90 degrees. For this reason, the locking portion 215b is seated on the lower portion of the circular arc portion 221a ″ of the insertion portion 221a at an angle of 90 ° with the flat portion 221a ′ and when the nut portion 221b is rotated 90 °. A seating groove 221k (see FIG. 9) is formed so as to maintain a 90 degree rotation angle of the ejection unit main body 221. By separating the ejection unit 220 by 90 degrees, separation from the head unit 210 is performed. In addition, since the coupling to the head unit 210 is performed, there is an advantage that separation and coupling are easy.

  When the injection unit body 221 is coupled and fixed to the head unit 210, the flat surface part 221a ′ of the insertion part 221a passes between the locking parts 215b so that the arc part 221a ″ of the insertion part 221a is formed. After the nut portion 221b is rotated 90 degrees after being accommodated in the circular accommodating portion 215a, the circular arc portion 221a ″ of the insertion portion 221a is fixed on the locking portion 215b. At this time, the locking portion 215b is seated in a seating groove 221k formed in a lower portion of the circular arc portion 221a ″ of the insertion portion 221a, and the injection portion main body 221 is rotated by the rotation of the nut portion 221b. The angle of rotation will be maintained.

  At this time, the force that allows the locking portion 215 b to be seated in the seating groove 221 k is the elastic restoring force of the first sealing 217. After the insertion part 221a is coupled to the circular accommodating part 215a, the nut part 221b is rotated 90 degrees to fix the injection part main body 221 to the head part 210, but the nut part 221b is rotated. When the insertion portion 221a is coupled to the circular accommodating portion 215a from the time point, the first sealing 217 that serves to prevent the first fluid supplied to the first fluid supply hole 212a from flowing out is crimped. . Immediately before the 90 ° rotation of the nut portion 221b is almost completed, the locking portion 215b is moved to the seating groove 221k by the elastic restoring force of the first sealing 217, so that the locking portion 215b is fixed. When it comes to seat in the groove 221k and the locking portion 215b is seated in the seating groove 221k, the rotation of the nut portion 221b by 90 degrees is completed. When the 90 degree rotation of the nut part 221b is completed, the fixing of the injection part main body 221 and the head part 210 is completed. In this case, the force that keeps the locking portion 215b seated in the seating groove 221k is also the elastic restoring force of the first sealing 217. The elastic restoring force of the first sealing 217 keeps the locking portion 215b seated in the seating groove 221k.

  In this manner, the locking portion 215b is moved to the seating groove 221k just before the 90 ° rotation of the nut portion 221b is almost completed, and the locking portion 215b is seated on the seating groove 221k. In order to make the first sealing 217 have an elastic restoring force in order to be worn and to keep the locking portion 215b seated in the seating groove 221k, The height of the groove 221k and the height at which the first sealing 217 is elastically restored must have the following correlation.

  The depth of the seating groove 221k is determined when the locking part 215b is seated in the seating groove 221k by the 90 degree rotation of the nut part 221b after the insertion part 221a is coupled to the circular housing part 215a. The locking portion 215b is kept seated in the seating groove 221k by the elastic restoring force of the first sealing 217 so that the first sealing 217 is shallower than the depth at which the first sealing 217 is elastically restored. To do.

  When the locking portion 215b is seated in the seating groove 221k by rotating the nut portion 221b by 90 degrees, the first sealing 217 is elastically restored, but the depth of the seating groove 221k is the first depth. If the sealing 217 is deeper than or equal to the depth at which the sealing 217 is elastically restored, the insertion part 221a is not pushed downward by the elastic restoration of the first sealing 217, so that the locking part 215b is inserted into the seating groove. The ability to arrive at 221k cannot be provided.

  If the depth of the seating groove 221k is shallower than the depth at which the first sealing 217 is elastically restored, the insertion portion 221a is pushed downward by the elastic restoration of the first sealing 217. Therefore, the locking portion 215b provides a force for seating on the seating groove 221k, and the latching portion 215b can be maintained seated on the seating groove 221k.

  In addition, the crimping of the first sealing 217 is performed by an annular edge portion 221j protruding upward at the upper outline of the insertion portion 221a. The annular edge portion 221j protrudes upward so that the first sealing 217 provided in the circular accommodating portion 215a of the head portion 210 can be pressure-bonded when the ejection portion 220 is coupled to the head portion 210. It is formed.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Housing 110 Housing main body 111 1st inflow space part 112 2nd inflow space part 113 Projection part 114 1st coupling hole 115 2nd coupling hole 120 Sealing block 200 Injection nozzle 210 Head part 211 Upper part 211a Insertion coupling part 211b Step 212 Middle part 212a First fluid supply hole 213 Lower part 214 Hollow part 215 Joint part 215a Circular accommodating part 215b Locking part 216 Sealing insertion groove 217 First sealing 220 Injection part 221 Injection part main body 221a Insertion part 221b Nut part 221c Screw part 221d Separation supply part 221e First fluid communication hole 221f Second fluid communication hole 221g Projection insertion part 221h Second sealing 221i Ring groove 221j Annular edge 221k Seating groove 222 Injection cap 223 Injection cap fixing part

Claims (10)

A first inflow space portion that is formed to be hollow through the left and right is formed, a first inflow space portion into which the first fluid flows in is formed, a protruding portion that protrudes at an upper portion of the outer peripheral edge is formed, and the second fluid is formed above the first inflow space portion. A housing body formed with an inflowing second inflow space, and a housing made of a hermetically sealed block coupled to the protrusion of the housing body to seal the second inflow space;
A hollow portion penetrating vertically is formed, penetrates the first inflow space portion at a lower portion of the housing main body, the hollow portion communicates with the second inflow space portion, and the second fluid flows from the second inflow space portion. Is connected to the upper part of the housing main body so as to be supplied to the hollow part, and is connected to the lower part of the housing main body, and communicates with the first inflow space part in the outline of the hollow part A head part in which an intermediate part formed vertically with a hole and a lower part are integrally formed, and the first fluid and the second fluid are separately supplied from the housing;
The first fluid and the second inflow space that are coupled to and separated from a coupling portion provided at a lower portion of the head portion and that flow into the first inflow space and are supplied to the first fluid supply hole. An injecting unit that mixes and injects the second fluid that flows in and is supplied to the hollow part;
An injection device for two-fluid injection, comprising: A first coupling hole and a second coupling hole to which the upper and middle portions of the head unit are coupled are respectively formed on the upper and lower outer peripheral edges of the housing body,
2. The two-fluid ejection device according to claim 1, wherein the protruding portion protrudes upward along an outline of an upper peripheral edge of the housing body. The second coupling hole has a long hole shape so as to prevent the intermediate part of the head part to be coupled from rotating.
The two-fluid ejection device according to claim 2, wherein an intermediate portion of the head portion has a cross-sectional shape corresponding to the second coupling hole. The coupling portion of the head portion has a diameter larger than that of the intermediate portion of the head portion, and a circular accommodating portion that communicates with the first fluid supply hole and the hollow portion is formed on the inner side, and is a lower portion of the circular accommodating portion. At the lower end of the coupling portion, there is formed a locking portion extending inwardly to form a long hole shape with the circular accommodating portion,
The injection portion includes a flat hole portion that passes through the locking portion, and an elongated hole-shaped insertion portion that includes an arc portion that is inserted and accommodated in the circular accommodation portion and is in contact with an inner peripheral edge of the circular accommodation portion; A state in which two nuts formed at a lower portion of the insertion portion, a screw portion formed at the lower portion of the nut portion, and a screw portion formed at the lower portion of the screw portion and supplied from the head portion are separated. And a separate supply part that is supplied to the lower part and is integrally formed, and the insertion part is connected to the coupling part of the head part by the rotation of the nut part, and is coupled to the coupling part of the head part. A first fluid communication hole and a second fluid communication hole in which the fluid supply hole and the hollow portion communicate with each other are respectively formed from the upper part to the lower part; and a lower part of the separation supply part of the injection part body. Contains the separation supply unit and supplies from the separation supply unit An injection cap that mixes and injects the two fluids, and an injection cap fixing portion that is screwed to the screw portion to fix the injection cap to a lower portion of the separation supply portion of the injection portion main body When,
The two-fluid ejection ejecting device according to any one of claims 1 to 3, wherein A sealing insertion groove is formed at the upper end of the inner peripheral edge of the circular accommodating portion,
A first sealing that is inserted into the sealing insertion groove and that prevents the first fluid supplied to the first fluid supply hole from flowing out to the outside when the insertion portion is coupled to the circular accommodating portion; Characterized by being provided,
The injection device for two fluid injection according to claim 4.   The upper center of the insertion portion is formed to protrude upward, the second fluid communication hole is formed, and a protruding insertion portion is formed that is inserted and coupled to the hollow portion of the head portion by loose fitting. The two-fluid ejection device according to claim 4 or 5, wherein The protruding insertion part has a ring groove formed in an intermediate part,
A second sealing is provided which is coupled to the ring groove and prevents the second fluid supplied to the hollow part from flowing out to the first fluid supply hole. To
The injection device for two fluid injection according to claim 6.   An annular edge protruding upward is provided on the upper outer portion of the insertion portion so that the first sealing provided in the circular receiving portion of the head portion can be crimped when the injection portion is coupled to the head portion. 6. The two-fluid ejection device according to claim 5, further formed.   The lower part of the arc part forms an angle of 90 degrees with the flat part so that when the nut part is rotated 90 degrees, the locking part is seated and the injection unit main body maintains a 90 degree rotation angle. 6. The two-fluid ejection device according to claim 5, wherein a seating groove is formed.   The depth of the seating groove is such that the first sealing is 100 when the locking part is seated in the seating groove by rotating the nut part 90 degrees after the insertion part is coupled to the circular housing part. 10. The structure according to claim 9, wherein the engagement portion is kept seated in the seating groove by an elastic restoring force of the first sealing so as to be shallower than a depth at which the elastic recovery is performed. The two-fluid ejection device according to claim.

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