KR20110126492A - Nozzle-unified valve assembly including bypass passages - Google Patents

Abstract

PURPOSE: A nozzle integrated valve assembly is provided to reduce liquid droplet or liquid stream which is formed in the end of a nozzle by eliminating liquid which rests in inside of a conduit line of a valve. CONSTITUTION: A fluid supply means(400) is inserted into a feeding means insertion part(220). A injection nozzle(100) is inserted into a nozzle insertion part(210). A connecting channel interlinks the feeding means insertion part and the nozzle insertion part. The connecting channel flows out the fluid which is flowed from the feeding means insertion part to the nozzle insertion part. A valve body(200) comprises a bypass channel. The bypass channel is communicated with the connecting channel. An opening/closing means selectively opens and closes the bypass channel.

Description

Nozzle-unified valve assembly including bypass passages}

The present invention relates to a nozzle integrated valve assembly comprising a bypass passage.

In general, when the injection nozzle sprays the liquid pressurized by the fluid supply device, the liquid droplets or the liquid stems are often formed at the nozzle end when the injection nozzle is injected. Therefore, the conventional method has been proposed to reduce the above phenomenon by having a check valve for removing the liquid droplets or liquid stem formed on the nozzle end.

However, even with the use of the check valve as described above, it was not possible to significantly reduce the liquid condensation or the liquid stem phenomenon occurring at the nozzle end in the past, even if the fluid supply is stopped by the fluid supply device, Although it was stopped, there was a problem in that a droplet or a liquid stem phenomenon occurred at the nozzle end due to the residual pressure of the liquid remaining in the pipe.

The present invention is a nozzle integrated type that includes a bypass flow path that can effectively reduce the liquid droplets or the liquid stem formed on the nozzle end by removing the liquid remaining in the pipeline in the valve even when the fluid supply means is stopped and the fluid supply is stopped. It is an object to provide a valve assembly.

The present invention provides an injection nozzle, a supply means insertion portion into which a fluid supply means for supplying fluid is inserted, a nozzle insertion portion into which the injection nozzle is inserted, and the supply means insertion portion and the nozzle insertion portion are connected to each other so as to communicate with each other. A valve main body including a connection flow passage which flows the fluid introduced from the supply means insertion portion to the nozzle insertion portion, and a bypass flow passage communicating with the connection flow passage, provided in the valve body and supplied with power from the outside And an opening / closing means for selectively opening and closing a pass passage, wherein the opening and closing means closes the bypass passage when the fluid supply means is operated, and the liquid introduced from the fluid supply means passes through the connection passage to the injection nozzle. When the fluid supply means is discharged, the opening and closing means opens the bypass flow path and the connection flow path. Is of the liquid through the bypass channel provides a one-piece nozzle valve assembly that includes a bypass flow passage that is discharged to the outside.

Here, the valve body is formed with a closing means inserting portion is inserted into the opening and closing means on the bypass flow path, the opening and closing means, the power supply, a housing that one side is inserted into the opening and closing means insertion opening, and the housing A solenoid valve provided therein and elastically supported by an elastic member, the solenoid valve including a solenoid plunger that moves in response to an electrical signal of the power supply unit and opens or closes the bypass flow path, and is connected to the solenoid valve and the fluid supply means. It includes a control unit for controlling the solenoid valve in accordance with the operation of the fluid supply means. In this case, the supply means inserting portion, the nozzle inserting portion, and the closing means inserting portion are each formed with a thread, the fluid supply means, the injection nozzle and the opening and closing means may be screwed to the valve body, respectively. .

In addition, the bypass flow passage is in communication with the connecting passage and the opening and closing means inserting portion and the first bypass passage for flowing out the liquid in the connection flow path to the opening and closing means insertion portion, and is in communication with the opening and closing means insertion portion And a second bypass flow path for outflowing the liquid in the opening and closing means insertion portion to the outside, wherein the opening and closing means includes one end face of the solenoid plunger contacting or separating the first bypass flow path to open the first bypass flow path. It can be blocked or opened. Here, the outer circumferential end portion of the first bypass passage, in which one end surface of the solenoid plunger is in contact, may be formed to protrude from the opening and closing means insertion portion. In addition, the cross-sectional area of the bypass passage may be larger than the cross-sectional area of the connection passage.

The fluid supply means may include a receiving tank in which the liquid is accommodated, a supply line connected to the receiving tank, a pressurizing device connected to the supply line to supply the liquid in the receiving tank to the supply line, and And a pump cap connected to the supply line and having one end inserted into and coupled to the supply means insert.

The nozzle integrated valve assembly according to the present invention can effectively reduce the liquid droplets or liquid stems formed at the nozzle end by reducing the pressure area by spraying the pressurized liquid through the nozzle and minimizing the distance between the nozzle and the bypass flow path. It is good for maintenance because the nozzle is detachable and easy to fasten.

1 is an assembled perspective view of a nozzle integrated valve assembly including a bypass passage according to an exemplary embodiment of the present invention.
FIG. 2 is an exploded perspective view of the nozzle integrated valve assembly of FIG. 1. FIG.
3 is a schematic configuration diagram including a fluid supply means in the nozzle integrated valve assembly of FIG.
Figure 4 is a front sectional view showing the internal structure of the valve body of FIG.
5 is a plan sectional view of the valve body of FIG.
6 to 7b are cross-sectional views showing the flow of the liquid in the valve body according to the operation of the fluid supply means in the nozzle integrated valve assembly of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a nozzle integrated valve assembly including a bypass passage according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the nozzle integrated valve assembly of FIG. 1, and FIG. 3 is a nozzle integrated view of FIG. 1. It is a schematic block diagram showing the fluid supply means in the valve assembly. In addition, Figure 4 is a front sectional view showing the internal structure of the valve body of Figure 1, Figure 5 is a plan sectional view of the valve body of Figure 1, Figures 6 to 7b is a fluid supply means of the nozzle integrated valve assembly of Figure 1 Sectional drawing which shows the flow of the liquid in the valve body according to operation.

First, referring to FIGS. 1 and 2, the nozzle integrated valve assembly 500 including a bypass passage according to an embodiment of the present invention may include an injection nozzle 100, a valve body 200, and an opening and closing operation. And means 300.

The injection nozzle 100 is coupled to the valve body 200, the thread 120 is formed on one side outer peripheral surface coupled to the valve body 200, the nozzle pipe 110 is formed therein one side Liquid 1 introduced from the sprayed to the other side through the nozzle pipe (110). Here, the injection nozzle 100 is a conventional injection nozzle can be applied, of course, as described above can be coupled to the valve body 200 and the liquid (1) to spray or spray at high speed Any structure that can be used is possible.

The valve body 200 has a rectangular parallelepiped shape, and a supply means inserting unit 220, a nozzle inserting unit 210, and an opening and closing unit inserting unit 230 are formed on the outer surface thereof. In addition, the valve body 200 has a connection passage 240 in communication with the supply means insertion unit 220 and the nozzle insertion unit 210 therein, and a bypass passage communicating with the connection passage 240 ( 250 is formed and a detailed description thereof will be described later.

The supply means insertion unit 220 is formed on one side of the valve body 200, the fluid supply means for supplying a fluid 400 is inserted and coupled. Here, the supply means inserting portion 220 is a screw thread 222 is formed on the inner circumferential side is screwed with the pump cap 440 is formed with a screw thread 410 to be described later.

The nozzle insert 210 is formed on the other side of the valve body 200, the injection nozzle 100 is inserted and coupled. At this time, the nozzle insertion portion 210 is a screw thread 212 is formed on the inner peripheral surface is screwed through the screw thread 120 formed on one side of the injection nozzle (100).

The opening and closing means insertion unit 230 is formed on the upper surface of the valve body 200, the opening and closing means 300 is inserted and coupled. In addition, the opening and closing means insertion unit 230 has a screw thread 232 formed on the inner circumferential surface thereof and is screwed with the column portion 313 described later through the screw thread 232.

 The opening and closing means 300 is coupled to an upper portion of the valve body 200 and positioned on the bypass passage 250 to selectively open and close the bypass passage 250 by receiving power from the outside. Play a role. The opening and closing means 300 includes a power supply unit 320, a solenoid valve 310, and a control unit 330.

The power supply unit 320 (refer to FIG. 3) is dynamic to provide electric power to operate the solenoid valve 310.

The solenoid valve 310 may include a housing 312 having a magnetic force selectively by an electrical signal of the power supply unit 320, a column part 313 inserted into the housing 312, and the column part ( 313 is inserted into and elastically supported by the elastic member 315 and moves in accordance with the electrical signal of the power supply unit 320 so that the lower end of the bypass flow path 250 by non-contact or contact with the bypass flow path 250. A solenoid plunger 314 that opens or closes it.

Here, the lower surface of the solenoid plunger 314 in contact with the bypass passage 250 may be formed of a rubber material that is easy to maintain airtightness and closes the wear of the bypass passage 250 when the bypass passage 250 is closed.

On the other hand, the solenoid valve 310 has the same structure as the housing 312, the column portion 313, and the solenoid plunger 314 in the present embodiment, but the bypass flow path ( It is possible to change the configuration if it is possible to selectively open or close 250). Furthermore, in the present embodiment, the solenoid valve 310 of the above-described configuration is easy to handle opening and closing of the bypass flow path 250, and the hydraulic and pneumatic actuators and the solenoid valve 310 are provided. It can be applied to various electric actuators. In this case, reference numeral 311 denotes a cap and 3121 denotes a column inserting portion.

Referring to FIG. 3, the fluid supply means 400 includes a receiving tank 410 in which the liquid 1 is accommodated, a supply line 420 connected to the receiving tank 410, and the supply line 420. Connected to the pressurizing device 430 such as a supply pump for supplying the liquid 1 of the receiving tank 410 to the supply line 420, and the other end is connected to the supply line 420, and one end outer peripheral surface thereof. A thread 410 is formed at the upper portion, and includes a pump cap 440 screwed to the supply means inserting portion 220. Here, the fluid supply means 400 of the above configuration, as an embodiment, is coupled to the supply means insertion portion 220 of the valve body 200 and can supply the liquid (1) to the injection nozzle (100) Of course, the conventional fluid supply means 400 can be applied.

The control unit 330 is connected to the solenoid valve 310 and the fluid supply means 400 to control the solenoid valve 310 in accordance with the operation of the fluid supply means 400, PCB (printed circuit board) Alternatively, a programmable logic controller (PLC) may be used.

Here, the controller 330 controls the opening and closing means 300, that is, the solenoid valve 310 to open the bypass passage 250. In this case, the control unit 330 controls the solenoid valve to be opened and closed a plurality of times for a predetermined time after the operation of the pressurizing device is stopped so that the residual liquid can be effectively discharged, and the control time is designed. It can be set in various ways.

Here, the control unit 330 opens and closes the solenoid valve 310 in a short time immediately after the operation of the fluid supply means 400 is completed, and the liquid trapped in the connection passage (see FIG. 4). Residual liquid discharged from the connection passage 240 through the injection nozzle 100 by maintaining the pressure in the connection passage 240 at an atmospheric pressure within a short time so that 1) may exit the bypass passage 250. (1) can be reduced to a minimum. However, in this case, the pressurizing device 430 should be a structure in which the liquid 1 cannot return to the pressurizing device 430 due to a siphon phenomenon after operation.

Meanwhile, in the present embodiment, threads 222, 212, and 232 are formed in each of the supply means inserting unit 220, the nozzle inserting unit 210, and the closing means inserting unit 230, and each of the inserting units. Threads 410, 120, and 313a corresponding to the fluid supply means 400, the injection nozzle 100, and the opening and closing means 300, which are inserted into and coupled to the 210, 220, and 230, respectively, are screwed together. For this reason, in the present embodiment, the fluid supply means 400, the injection nozzle 100, and the opening and closing means 300 are not only fastened to each other but also detachable to the valve body 200, and thus easy to replace and maintain. Good water retention and assembly However, this is possible as long as it is a removable manner such as snap method, concave and convex method as one embodiment.

In addition, in the present embodiment, the supply means inserting portion 220, the nozzle inserting portion 210, and the closing means inserting portion 230 on one side, the other side, the upper surface of the valve body 200. Although each is formed, this may be different depending on the size, structure, capacity of the entire valve body 200 and the structure of the connection flow path 240 and the bypass flow path 250 formed therein.

Next, the internal structure of the valve body 200 according to the present embodiment will be described with reference to FIGS. 4 to 5.

The valve body 200 has a connection passage 240 and a bypass passage 250 formed therein.

The connection passage 240 connects the supply means inserting unit 220 and the nozzle inserting unit 210 to each other, and connects the fluid introduced from the supply means inserting unit 220 to the nozzle inserting unit 210. It acts as a passage to let out the water.

The bypass flow path 250 is formed so that one side is in communication with the connection flow path 240 and the other side penetrates to the rear or front of the valve body 200, thereby externally releasing the liquid 1 on the connection flow path 240. And the opening and closing means insertion part 230 is formed on the inner flow passage so as to be opened or closed by the opening and closing means 300.

In detail, the bypass passage 250 includes a first bypass passage 252 and a second bypass passage 254 with the opening / closing means inserting portion 230 therein. The first bypass passage 252 has one side in communication with the connection passage 240 and the other side in communication with the opening and closing means inserting portion 230 to open and close the liquid 1 in the connection passage 240. Outflow to the means insertion unit 230. The second bypass passage 254 has one side in communication with the opening and closing means insertion portion 230 and the other side in communication with the outside to flow out the liquid 1 in the opening and closing means insertion portion 230 to the outside.

Here, the opening and closing means 300 is located between the first bypass passage 252 and the second bypass passage 254, the lower surface of the solenoid plunger 314 according to the electrical signal is the first bypass The first bypass passage 252 and the second bypass passage 254 are opened or closed while being in contact with or separated from the other end of the passage passage 254.

Here, the other end of the first bypass passage 252, which is in contact with the lower surface of the solenoid plunger 314, the frictional resistance is reduced to insert the opening and closing means to smoothly open and close the operation according to the movement of the solenoid plunger 314 A protrusion 2521 is formed to protrude obliquely toward the unit 230.

On the other hand, the cross-sectional area of the bypass flow path 250 is formed larger than the cross-sectional area of the connection flow path 240. This is to increase the hydraulic pressure on the connection flow path 240 than the hydraulic pressure on the bypass flow path 250 so that the liquid 1 of the connection flow path 240 flows easily into the bypass flow path 250. . In detail, the cross-sectional area of the connection channel 240 may be 0.35 to 0.45 mm or less, and the cross-sectional area of the bypass channel 250 may be 1.5 to 2.5 mm.

6 to 7b is a view showing the liquid flow in accordance with the operation of the nozzle integrated valve assembly according to the present embodiment.

First, referring to FIG. 6, which is a front sectional view of the valve body 200, in the present embodiment, when the fluid supply means 400 operates, the opening and closing means 300 is opened in the state in which the injection nozzle 100 is opened. The bypass passage 250 is closed, and then the liquid 1 introduced from the fluid supply means 400 passes through the connection passage 240 to the injection nozzle 100 of the nozzle insert 210. Spills.

However, when the operation of the fluid supply means 400 is stopped, as shown in Figures 7a and 7b, in this embodiment, the opening and closing means 300 is bypassed in the state in which the injection nozzle 100 is open The flow path 250 is opened, and then the liquid 1 remaining on the connection flow path 240 passes through the first bypass flow path 252 and the opening and closing means insertion part 230, and then the second bypass flow path. Flow to 254 and flow out. Here, Figure 7a is a front sectional view of the valve body 200, Figure 7b is a plan sectional view of the valve body 200.

That is, according to the present embodiment, since the remaining liquid 1 on the connection flow path 240 can be removed even when the operation of the fluid supply means 400 is stopped, a liquid droplet generated at the end of the injection nozzle 100 or It can greatly reduce the liquid stem phenomenon.

In addition, the present embodiment has a structure in which the nozzle is inserted into the valve body 200, the volume of the connection flow path 240 is formed to a minimum, the connection flow path 240 is made of a hard material rather than a soft hose By forming the inside of the valve body 200, the operation of the fluid supply means 400 is interrupted until the end of pressurization of the liquid (1) until the atmospheric pressure is maintained, the expansion of the connection flow path 240 itself and the amount of compression even a small amount It is possible to reduce the liquid stem to the injection nozzle 100 end due to the liquid (1).

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100 ... Injection nozzle 110 ... Nozzle line
200 ... valve body 210 ... nozzle insert
220 ... Feed means insert 230 ... Switch insert
240 ... Connection Euro 250 ... Bypass Euro
252 ... Bypass 1 Euro 254 ... Bypass 2 Euro
300 ... opening and closing means 310 ... solenoid valve
320 ... power supply 330 ... control unit
400 ... Fluid supply means 500 ... Valve assembly

Claims (7)

Spray nozzles;
A supply means inserting portion into which a fluid supply means for supplying a fluid is inserted, a nozzle inserting portion into which the injection nozzle is inserted, and a supply means inserting portion and the nozzle inserting portion are connected to each other so as to flow in from the supply means inserting portion A valve main body including a connection flow passage which discharges the fluid to the nozzle insertion portion, and a bypass flow passage communicating with the connection flow passage; And
It is provided in the valve body, including the opening and closing means for selectively opening and closing the bypass flow path by receiving power from the outside,
When the fluid supply means is operated, the opening and closing means closes the bypass flow path so that the liquid introduced from the fluid supply means flows out to the injection nozzle through the connection flow path, and when the fluid supply means is stopped, the opening and closing means is opened. And a bypass flow passage means for opening the bypass flow passage so that the liquid in the connection flow passage flows out through the bypass flow passage. The method according to claim 1,
The valve body is provided with a closing means inserting portion is inserted into the opening and closing means on the bypass flow path,
The opening and closing means,
A solenoid valve including a power supply unit, a housing, and a solenoid plunger 314 provided in the housing and elastically supported by an elastic member and moving according to an electrical signal of the power supply unit to open or close the bypass flow path. ,
And a bypass passage including a control unit connected to the solenoid valve and the fluid supply unit to control the solenoid valve according to the operation of the fluid supply unit. The method according to claim 2,
The feed means inserting portion, the nozzle inserting portion, and the closing means inserting portion are each formed with a thread, and the bypass passage for screwing the fluid supply means, the injection nozzle and the opening and closing means to the valve body, respectively, Nozzle integral valve assembly included. The method according to claim 2 or 3,
The bypass flow path,
A first bypass passage communicating with the connection passage and the opening / closing means inserting portion to discharge the liquid in the connection passage to the opening / closing means inserting portion, and communicating with the opening / closing means inserting portion to connect the liquid in the opening / closing means inserting portion It includes a second bypass passage flowing out to the outside,
The opening and closing means,
And a bypass passage configured to block or open the first bypass passage while one end surface of the solenoid plunger is in contact with or separated from the first bypass passage. The method of claim 4,
The nozzle assembly type valve assembly of claim 1, wherein an outer circumferential end of the first bypass passage, in which one end surface of the solenoid plunger is in contact, includes a bypass passage formed to protrude from the opening and closing means insertion portion. The method according to claim 1 or 2,
And a bypass passage having a cross-sectional area of the bypass passage greater than that of the connection passage. The method according to claim 1 or 2,
The fluid supply means,
An accommodation tank in which the liquid is accommodated;
A supply line connected to the receiving tank;
A pressurizing device connected to the supply line and supplying a liquid of the accommodation tank to the supply line;
And a bypass flow passage including a pump cap connected to the supply line and having one end inserted into and coupled to the supply means insertion portion.

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