WO2013042860A1

WO2013042860A1 - Fluid pump dispenser

Info

Publication number: WO2013042860A1
Application number: PCT/KR2012/005338
Authority: WO
Inventors: 이용대
Original assignee: 주식회사 아폴로산업
Priority date: 2011-09-20
Filing date: 2012-07-05
Publication date: 2013-03-28
Also published as: KR101107519B1

Abstract

The present invention relates to a fluid pump dispenser, and the object thereof is to effectively prevent liquid from leaking after using a product by sucking the remaining fluid back to the inside of a discharging fluid path when the fluid is fully discharged and a push head rises. To this end, the fluid pump dispenser comprises: a sub-cap (210) coupled to an inlet (110) of a receptacle (100); a main cylinder (220) which is provided coaxially to the inside of the sub-cap (210) and in which a pressure chamber (221) for sucking and temporarily storing the fluid stored in the receptacle (100) is formed in the inside thereof and a suction hole (222) for sucking the fluid is prepared at a lower part thereof; a suction tube (230) having an upper end which is provided at the suction hole (222) of the main cylinder (220) to guide the suction of the fluid; a first check valve (240) which is arranged at a top part of the suction hole (222) of the main cylinder (220) and selectively opens or closes the suction hole (222) of the main cylinder (220) according to a change in the pressure of the pressure chamber (221) of the main cylinder (220); a first hollow piston shaft (250) having a lower part for coming in close contact with the inside of the main cylinder (230) and is movably received in the vertical direction, an upper end for penetrating a central part of the sub-cap (210) to extend to an upper side, and a valve seat part (252) formed at the inside of the upper end; a second check valve (260) which is provided and received at an upper end of the first piston shaft (250) and selectively opens or closes the valve seat part (252) of the first piston shaft (250) according to a change in the pressure of the pressure chamber (221) of the main cylinder (220); a sub-cylinder (270) having a lower end inserted into and coupled to an upper end of the first piston shaft (250) to be integrally moved with the first piston shaft (250), and a sub-pressure chamber (271) formed in the inside thereof; a push head (280) having a cylindrical sliding combination part (281) slidably assembled in a predetermined section from the outside of the upper end of the sub-cylinder (270) in a central part, and a discharging hole (282) for discharging the pumped fluid to the outside which extends in the lateral direction in the inside thereof; a second piston shaft (290) having an upper end inserted into and coupled to a central part of a bottom surface of the push head (280) to be connected to the discharging hole (282), and a lower end which comes in close contact with the inside of the upper end of the sub-cylinder (270) and is movably received and arranged in the vertical direction, to vary the inner volume of the sub-pressure chamber (271) of the sub-cylinder (270) according to the vertical operation of the push head (280); and a coil spring (300) having a lower end supported by an upper part of the sub-cap (210), and an upper end supported by a central part of the push head (280) to cover the upper part of the first piston shaft (250) and the outside of the sub-cylinder (270) and to elastically support the push head (280) in the upper direction.

Description

Fluid Pump Dispenser

The present invention relates to a fluid pump dispenser; More specifically, the present invention relates to a "fluid pump dispenser" mounted in a container containing a fluid (contents) and capable of inhaling / pumping the fluid and discharging it to the outside by repeatedly pressing the push head.

In general, a liquid or paste-type container or other fluid (contents) is provided with a "FLUID PUMP-DISPENCER", which can be used by discharging a certain amount of fluid through a piston mechanism.

As shown in FIG. 1, the conventional fluid pump dispenser is coupled to an inlet (not shown) of the container and has a pumping unit 10 provided with a pressure chamber 11a to suck / pump and temporarily store fluid, and the pumping unit. It is distinguished by the push head part 20 provided with the discharge port 21 for applying the pressure to the pressure chamber 11a of 10, and discharging a pumped fluid to the outside.

The pumping part 10 is provided coaxially at the inner center of the cap housing 12, which is mounted at the inlet of the container by screwing, and has a pressure chamber 11a formed therein, and the cylinder 11 The coil spring 13 provided in the pressure chamber 11a, the hollow piston shaft 14 which is elastically supported by the upper end of this coil spring 13, and the communication hole 14a is formed in one side, and is hollow inside, A cylinder cap 15 through which the piston shaft 14 slides slidably and closes the upper end thereof, and a connecting pipe 16 for connecting the outlet 21 of the push head part 20 and the upper end of the piston shaft 14. And a ball valve 17 placed on the valve seat portion 11b at the lower end of the cylinder 11.

Therefore, when the user presses the push head portion 20, the piston shaft 14 is lowered while overcoming the elastic force of the coil spring 13, whereby the fluid filled in the pressure chamber (11a) of the cylinder 11 is a communication hole 14a is discharged to the outside through the hollow part of the piston shaft 14, the connecting pipe 16, and the outlet 21. At this time, the ball valve 17 contacts the valve seat portion 11b by the lowering pressure of the fluid inside the cylinder 11 to block communication between the pressure chamber 11a and the inside of the container.

When the user releases the push head portion 20, the piston shaft 14 is raised by the elastic support force of the coil spring 13, and the communication hole 14a is closed to block the fluid discharge and at the same time the pressure of the cylinder 11 Vacuum is formed in the chamber 11a. Thus, a part of the fluid stored in the container is sucked into the pressure chamber 11a and filled up while raising the ball valve 17. By repeatedly pressing the push head portion 20, the fluid in the container is constantly discharged.

However, in the conventional fluid pump dispenser, when the fluid pumping operation is stopped, the fluid that has not been discharged remains in the flow path of the outlet 21 of the pushhead part 20 while the pushhead part 20 is kept up. . This residual fluid flows down over time irrespective of the user's intention, causing the container outer wall and the surrounding area of the product to become dirty. Recently, the viscosity tends to increase depending on the advanced / specialization of the fluid (contents) contained in the container. In the case of high viscosity fluid, it remains in the outlet 21 flow path of the pushhead part 20 and flows down later as time passes. come.

In addition, in the conventional fluid pump dispenser, since the coil spring 13 made of metal is disposed inside the cylinder 11, which is a suction path of the fluid, there is a concern that the fluid is discolored by the fluid when used for a long time and the fluid (contents) is also deteriorated. In particular, in recent years, the fluid (contents) applied to the fluid pump dispenser is gradually becoming highly functional, which may cause fluid (contents) deterioration and corrosion of metal parts.

The present invention is to solve this problem; It is an object of the present invention to provide a "fluid pump dispenser" which can effectively prevent leakage after finishing the use of the product by re-suctioning the fluid remaining inside the discharge flow path as soon as the pushhead is raised while completing the discharge of the fluid.

In addition, another object of the present invention is configured to temporarily store the re-absorbed residual fluid immediately above the cylinder and to immediately discharge the temporarily stored residual fluid to the outside when the pushhead is lowered again, to prevent leakage as well as fluid It is to provide a "fluid pump dispenser" that can improve the discharge response of the.

The present invention for achieving this object is;

A fluid pump dispenser for suction pumping a fluid stored in a container to be discharged to the outside;

The fluid pump dispenser; A large cap coupled to the inlet of the container; A main-cylinder installed coaxially inside the large cap, and having a pressure chamber in which the fluid stored in the container is sucked and temporarily stored therein, and a suction port for inhaling the fluid; A suction tube mounted at an upper end of the main-cylinder suction port to guide fluid suction; A first check valve disposed directly above the inlet of the main cylinder and selectively opening and closing the inlet of the main cylinder according to a pressure chamber pressure change of the main cylinder; A hollow first piston shaft in which the lower portion is in close contact with the inside of the main cylinder and is accommodated in a vertical movement, the upper end portion penetrates through the central portion of the large cap and is upwardly formed, and a valve seat portion is formed inside the upper portion; A second check valve accommodated in an upper end of the first piston shaft and selectively opening and closing the valve seat of the first piston shaft according to a pressure chamber pressure change of the main cylinder; A lower end portion fitted to the upper end of the first piston shaft to be integrally moved with the first piston shaft, and having a negative pressure chamber therein; A central portion is provided with a cylindrical sliding coupling portion that is slidably assembled up and down a predetermined section from the outer edge of the upper end of the sub-cylinder, the push head is formed in the discharge port for discharging the pumped fluid to the outside in the horizontal direction; An upper end is inserted into and coupled to a central portion of a bottom surface of the push head so as to communicate with the outlet, and a lower end is disposed in close contact with the inside of the upper end of the sub-cylinder so as to be movable up and down, according to the vertical operation of the push head. A hollow second piston shaft for varying the negative pressure chamber volume of the cylinder; A coil spring having a lower end supported on an upper portion of the large cap and an upper end supported on a central portion of the push head to elastically support the push head upward while surrounding an upper portion of the first piston shaft and an outer sub-cylinder; It is characterized by including.

In addition, the present invention; A valve guide having a cylindrical shape such that the first check valve is inserted into and coupled to an upper portion of the inlet of the main cylinder and has a through hole and a lifting hole through which a fluid can pass; A shaft valve disposed in the lifting hole of the valve guide through a valve shaft and having a lower end portion having a reverse truncated cone shape to directly open and close the suction port; It is characterized by including.

In addition, the present invention; The second check valve is made of a sphere; An elastic member for elastically supporting the second check valve in the direction of closing the valve seat portion is disposed on the upper end of the first piston shaft.

In addition, the present invention; A cylindrical guide wall protruding upwardly protrudes from the outside to cover the lower end of the coil spring on the upper portion of the large cap; The lower end of the push head wraps the upper end of the coil spring from the outside, when the push head is pressed, characterized in that the tubular skirt wall is formed to surround the guide wall from the outside.

In addition, the present invention; The nozzle flow path bent from the horizontal to the lower end of the discharge head of the push head is characterized in that the nozzle-tip formed therein is combined.

According to the "fluid pump dispenser" according to the present invention made of the above configuration; After the fluid is discharged, the pressing pressure applied to the push head is released, and when the second piston shaft rises upward by the elastic restoring force of the coil spring, a vacuum pressure is instantaneously formed in the negative pressure chamber of the sub-cylinder, thereby causing the second piston. The remaining fluid, which has not escaped to the outlet of the shaft and the pushhead, is reabsorbed into the negative pressure chamber side of the sub-cylinder. As a result, the fluid remaining on the outlet side of the push head is sucked into the negative pressure chamber of the sub-cylinder in the state where the second piston shaft is raised together with the push head after use, thereby preventing the leakage phenomenon.

Furthermore, according to the "fluid pump dispenser" according to the present invention; The first check valve disposed at the inlet of the main cylinder comprises a valve guide having a perforated hole, and an axis valve which opens and closes the inlet while raising and lowering in the axial direction to the lifting hole of the valve guide. According to the operation there is an advantage that the inlet opening and closing is made immediately.

Furthermore, according to the "fluid pump dispenser" according to the present invention; Since the second check valve made of a sphere is supported by the elastic member, there is an advantage in that the response of opening and closing the valve seat of the first piston shaft is improved.

Furthermore, according to the "fluid pump dispenser" according to the present invention; Since the coil spring made of metal is arranged to surround the outer periphery of the first piston shaft and the sub-cylinder, there is no fear of corrosion due to not being in direct contact with the discharge fluid, and the fluid is also free from deterioration.

Furthermore, according to the "fluid pump dispenser" according to the present invention; The nozzle tip formed so that the nozzle flow path is bent downward from the horizontal is mounted at the tip of the outlet of the pushhead, so that the fluid can be accurately discharged downward.

1 is a schematic cross-sectional view of a conventional fluid pump dispenser.

2 is a cross-sectional view showing a state in which the fluid pump dispenser according to the present invention is mounted on the container.

3 is a cross-sectional view showing the internal structure of the fluid pump dispenser according to the present invention.

4 and 5 show a first check valve applied to the fluid pump dispenser according to the present invention; Figure 4 is an exploded perspective view of the first check valve, Figure 5 is a perspective view showing a coupling state of the first check valve.

6 and 7 show the fluid discharge process of the fluid pump dispenser according to the present invention as the push head is lowered.

8 and 9 illustrate the fluid suction process of the fluid pump dispenser according to the present invention as the push head is raised.

100. Container 110. Inlet 200. Fluid pump dispenser

210. Large cap 213. Guide wall 220 Main cylinder

221 Pressure chamber 222 Inlet 230 Suction tube

240 .. First check valve 250. First piston shaft 260. Second check valve

270 .. Sub-cylinder 271. Negative pressure chamber 280. Push head

290. Second piston shaft 284. Nozzle-tip 290. Second piston shaft

300. Coil Spring

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. {Briefly describe the attached drawings; 2 to 5 show the configuration of the fluid pump dispenser according to the present invention, Figures 6 to 9 show the operating state of the fluid pump dispenser according to the present invention.

2; The fluid container 100 to which the present invention is applied contains a fluid (contents), and the inlet 110 of the container 100 allows the fluid pump dispenser 200 to inhale / pump the fluid by a user's manual operation and discharge it to the outside. Is equipped. The container 100 to which the present invention is applied is an example of an airless type in which the piston 120 gradually descends as the fluid contents are pulled out.

The fluid pump dispenser 200 according to the present invention prevents fluid leakage by re-suctioning the remaining fluid in the discharge passage the moment the pushhead 280 rises again after the pushhead 280 is pressed and the fluid is discharged. 2 and 3, a large cap 210 mounted to the inlet 110 of the container 100 and a large cap 210 installed coaxially with the large cap 210 are provided with a fluid suction at the bottom thereof. A main cylinder 220 having a suction port 222 provided therein, a first check valve 240 selectively opening and closing the suction port 222 of the main cylinder 220, and a main cylinder 220 inside the main cylinder 220. The upper and lower ends are disposed to be movable, and the upper end is accommodated at the upper end of the first piston shaft 250 extending upwardly through the central portion of the large cap 210, and the valve seat portion 252. The second check valve 260 to selectively open and close the axial direction at the upper end of the first piston shaft 250 A sub-cylinder 270 coupled to be long and forming a negative pressure chamber 271 therein, and a push that is slidably coupled up and down a predetermined section at an upper end of the sub-cylinder 270 and has an outlet 282 formed therein. The head 280, the second piston shaft 290 which is disposed in the center of the bottom surface of the push head 280, the lower end is in close contact with the inside of the upper end of the sub-cylinder 270, and moves up and down, the large cap 210 and push The coil spring 300 is disposed between the heads 280 to restore the push heads 280.

Each of the components constituting the fluid pump dispenser 200 according to the present invention are mostly molded by injection molding except the coil spring 300 and the second check valve 260, and then assembled. It explains in detail individually.

First, the large cap 210 is to be mounted to the inlet 110 of the container 100 made of a male screw, for this purpose, the female screw 211 is formed on the inner circumference of the large cap 210. The upper surface of the large cap 210 is provided with a spring-mounted portion 212 in a ring shape so that the lower end of the coil spring 300 can be seated, and the coil spring 300 outside the spring-seated portion 212 is provided. The cylindrical guide wall 213 protruding upward to surround the lower end is provided to protrude upward. The guide wall 213 not only surrounds the coil spring 300 but is also configured to stably guide the lifting / lowering operation of the push head 280.

Main-cylinder 220 is installed coaxially inside the large cap 210, the inside thereof is provided with a pressure chamber 221 for sucking and temporarily storing the fluid, the lower inlet 222 for the fluid intake Is formed. A suction tube 230 extending to the bottom of the container 100 containing the fluid is fitted into the suction port 222 of the main-cylinder 220 to guide the fluid suction.

In addition, the first check valve 240 is disposed directly above the inlet 222 of the main cylinder 220, and selectively selects the inlet 222 according to the pressure change of the pressure chamber 221 of the main cylinder 220. It will open and close. In the embodiment of the present invention, as shown in FIGS. 4 and 5, the first check valve 240 is formed in a cylindrical shape so as to be fitted into and coupled to the upper portion of the inlet 222 of the main-cylinder 220. The valve guide 241 is provided with a through hole 241a and a lifting hole 241b through which the valve can pass, and the lifting hole 241b of the valve guide 241 can be lifted up and down through the valve shaft 242a. It is disposed and consists of a shaft valve 242 for directly opening and closing the inlet 222 is made of a reverse conical shape of the lower end. Therefore, when the pressure in the pressure chamber 221 is lowered due to the lifting and lowering of the first piston shaft 250, the shaft valve 242 is lifted upward and the fluid in the container 100 is inlet 222 of the main-cylinder 220. And through the through hole (241a) of the valve guide 241 is up and filled in the pressure chamber 221.

The first piston shaft 250 is made of a hollow hollow hollow body, the lower end thereof is provided with a close contact portion 251 is in close contact with the inner wall of the main-cylinder 220 main-cylinder 220 to move up and down Is accommodated in. The upper end of the first piston shaft 250 extends upward through the central portion of the large cap 210 and has a valve seat portion 252 formed therein. The valve seat portion 252 is formed of a hollow hole having a tapered shape in which the inner diameter gradually decreases from the upper side to the lower side, in order to open and close the second check valve 260 to be described later.

The second check valve 260 selectively opens and closes the upper end of the first piston shaft 250 according to the pressure change of the pressure chamber 221 of the main cylinder 220. In the embodiment of the present invention, the second check valve 260 is composed of spheres (steel balls) placed on the valve seat portion 252 of the first piston shaft 250, and when the valve seat portion 252 is seated, the fluid therethrough. Movement is completely blocked. In addition, in the embodiment of the present invention, an elastic member 261 that elastically supports the second check valve 260 in the direction of closing the valve seat 252 is additionally installed at the upper end of the first piston shaft 250. This is to improve the response of the second check valve 260. The elastic member 261 is made of a synthetic resin and made of a coil spring type.

And the sub-cylinder 270 is formed in a cylindrical shape of the upper and lower parts, the lower end is coupled to the upper end of the first piston shaft 250 in a coaxially coarse fitting manner is raised and lowered together with this. An open upper side of the sub-cylinder 270 is slidably coupled to the push head 280 up and down a predetermined section, and a negative pressure chamber 271 that temporarily stores the fluid is formed therein.

On the other hand, the push head 280 is provided with a cylindrical sliding coupling portion 281 in the central portion to be assembled so as to be slidably up and down a predetermined section outside the upper end of the sub-cylinder 270, the push head 280 In the interior of the discharge port 282 for discharging the fluid to be pumped to the outside is formed extending in the horizontal direction. In addition, the push head 280 wraps the sub-cylinder 270 together with the upper end of the coil spring 300 from the outside, and when the push head 280 is pressed, a tub that surrounds the guide wall 213 of the large cap 210 from the outside. A skirt wall 283 having a shape is provided, which allows the push head 280 to be pressed and operated easily and accurately. In addition, the tip of the outlet 282 of the push head 280 is equipped with a nozzle-tip 284 formed in such a way that the nozzle passage 284a is bent from the horizontal to the lower side in communication with the outlet 282, through which the user desired direction Fluid can be discharged.

In addition, the second piston shaft 290 is made of a hollow cylindrical shape, the piston portion for varying the volume of the negative pressure chamber 271 is coupled to the inside of the upper end of the sub-cylinder 270 so as to be slidable. 291 and an axial coupling portion 292 that is inserted into and coupled with the outlet 282 in the central portion of the push head 280.

The coil spring 300 is a kind of compression spring made by spirally winding a steel wire, and a lower end thereof is supported by a spring-receiving portion 212 formed at an upper portion of the large cap 210, and an upper end thereof is a push head 280. Support is placed on the bottom of the. Accordingly, the push head 280, the sub-cylinder 270, and the first piston shaft 250 are always elastically supported upward by the coil spring 300. The coil spring 300 is disposed between the large cap 210 and the push head 280 does not directly contact the discharged fluid.

Next, the operation of the fluid pump dispenser according to the present invention configured as described above and the effects thereof will be described with reference to FIGS. 6 to 9.

First, in the initial state of the fluid pumping dispenser 200, the first piston shaft 250 and the second piston shaft 290 are raised together with the push head 280 by the elastic support force of the coil spring 300. The fluid is sucked through the suction tube 230 and stored in the pressure chamber 221 of the main-cylinder 220 (see FIG. 2).

In this state, as shown in FIG. 6, the user presses the pushhead 280 slightly (see arrow A direction in FIG. 6); The push head 280 slides down the upper end of the sub-cylinder 270 for a predetermined period while the elastic spring force of the coil spring 300 is overcome. At the same time, the second piston shaft 290 presses the pressure of the sub-cylinder 270. The thread 221 slides down.

Subsequently, as shown in FIG. 7, the pushhead 280 is further pressed (see arrow A direction in FIG. 7); The first piston shaft 250 descends together with the sub-cylinder 270. Therefore, the fluid filled in the pressure chamber 221 of the main-cylinder 220 lifts the second check valve 260 upward, and the valve seat portion 252 → sub-cylinder 270 of the first piston shaft 250. → the second piston shaft 290 → the outlet 282 of the pushhead 280 → is discharged to the outside through the nozzle-tip 284 (see dotted arrow direction in FIG. 7). At this time, the first check valve 240 disposed at the inlet 222 of the main cylinder 220 is in close contact with the inlet 222 by the fluid dropping pressure in the pressure chamber 221, and thus the pressure chamber 221 and the container ( The communication with the inside of the 1000 is blocked. The closing operation of the first check valve 240 is performed from the moment when the first piston shaft 250 descends because the fluid is also filled in the first piston shaft 250. That is, at the moment when the first piston shaft 250 descends together with the push head 280, the fluid filled in the pressure chamber 221 presses down on the first check valve 2400, and thus the main cylinder 220. The inlet 222 is securely closed so that there is no pressure loss during the pumping operation, and the outlet 282 and the nozzle-tip 284 of the pushhead 280 in the state where the pushhead 280 is lowered to the maximum. In the fluid, fluid that could not be discharged remains.

And as shown in FIGS. 8 and 9, when the user releases the pushhead 280; By the restoring force of the coil spring 300, the push head 280 and the second piston shaft 290 together with the first piston shaft 250 momentarily rise (see arrow B direction), whereby the pressure chamber 221 The vacuum chamber is simultaneously applied to the overpressure chamber 271.

That is, as shown in FIG. 8, the second piston shaft 290 along with the push head 280 is moved by the elastic restoring force of the coil spring 300 at the moment of placing the push head 280. At the same time, the second check valve 260 is seated and closed on the valve seat 252 and the vacuum pressure is applied to the negative pressure chamber 271 of the sub-cylinder 270. This causes the fluid remaining in the nozzle-tip 284 and the outlet 282 of the pushhead 280 to be re-absorbed into the negative pressure chamber 271 of the sub-cylinder 270 (see the dashed arrow direction in FIG. 8).

In addition, as shown in FIG. 9, as the first piston shaft 250 is raised (see arrow B direction), a vacuum pressure is formed in the pressure chamber 221 of the main-cylinder 220, so that the first check valve ( The shaft valve 242 of the 240 is slightly lifted from the inlet 222, which causes the inlet 222 to be opened so that the fluid in the container 100 is sucked into the pressure chamber 221 through the suction tube 230. In addition, the piston 120 is lowered by the volume in the container 100 in which the fluid is partially removed, and the fluid pump dispenser 200 according to the present invention is maintained in an initial state. By repeating this series of processes, the fluid contained in the container through the fluid pump dispenser 200 in the present invention can be used by suction pumping.

As such, in the state in which the first piston shaft 250 is raised together with the push head 280, fluid does not remain in the nozzle tip 284 and the outlet 282 of the push head 280. Leakage does not occur even if left unattended. Therefore, the fluid pump dispenser 200 according to the present invention can be applied to a container product containing a high viscosity fluid. In addition, the push head 280 is pressed accurately without twisting through the guide wall 213 and the skirt wall 283 of the large cap 210, the fluid is discharged through the nozzle-tip 284 in the desired direction and the proper discharge Discharged under pressure.

The present invention can be widely used in the field of fluid pump dispensers which inhale / pump and discharge fluid (contents) contained in a container by repeatedly pressing the pushhead.

Claims

A fluid pump dispenser for suction pumping a fluid stored in the container 100 to be discharged to the outside;

The fluid pump dispenser 200;

A large cap 210 coupled to the inlet 110 of the container 100;

It is installed coaxially on the inside of the large cap 210, the pressure chamber 221 is formed therein is a fluid is stored in the container 100 is temporarily stored therein, the inlet 222 for the fluid suction A main cylinder 220 provided;

A suction tube 230 having an upper end mounted on the suction port 222 of the main-cylinder 220 to guide the fluid suction;

Is disposed directly above the inlet 222 of the main-cylinder 220 and selectively opening and closing the inlet 222 of the main-cylinder 220 according to the pressure change of the pressure chamber 221 of the main-cylinder 220. A first check valve 240;

The lower part is in close contact with the inside of the main-cylinder 230 so that the upper and lower movements are accommodated, and the upper end portion penetrates through the central portion of the large cap 210 and is extended upward, and the valve seat part 252 is formed inside the upper part. A hollow first piston shaft 250;

It is disposed at the upper end of the first piston shaft 250 and selectively opens and closes the valve seat 252 of the first piston shaft 250 according to the pressure change of the pressure chamber 221 of the main cylinder 220. A second check valve 260;

A sub-cylinder 270 having a lower end fitted to an upper end of the first piston shaft 250 to be integrally moved with the first piston shaft 250 and having a negative pressure chamber 271 formed therein;

The central portion is provided with a cylindrical sliding coupling portion 281 that is slidably assembled up and down a predetermined section outside the upper end of the sub-cylinder 270, the discharge port 282 for discharging the pumped fluid to the outside Push head 280 is formed to extend in the horizontal direction;

The upper end of the push head 280 is inserted into the upper end is coupled to communicate with the outlet 282, the lower end is in close contact with the inside of the upper end of the sub-cylinder 270 is disposed to accommodate the vertical movement, the A hollow second piston shaft 290 for varying the contents of the negative pressure chamber 271 of the sub-cylinder 270 according to the vertical operation of the push head 280;

A lower end is supported on an upper portion of the large cap 210 and an upper end is supported on a central portion of the push head 280 to surround the upper portion of the first piston shaft 250 and the outer portion of the sub-cylinder 270. A coil spring 300 that elastically supports 280 upwardly; Fluid pump dispenser characterized in that it comprises.
The method of claim 1,

The first check valve 240,

The valve guide 241 is formed in a cylindrical shape to be coupled to the upper portion of the inlet 222 of the main-cylinder 220, and has a through hole 241a and a lifting hole 241b through which a fluid can pass. ;

An axial valve 242 disposed in the elevating hole 241b of the valve guide 241 through a valve shaft 242a to move up and down and having a lower end portion having an inverted truncated cone shape to directly open and close the suction port 222; Fluid pump dispenser characterized in that it comprises.
The method of claim 1,

The second check valve 260 is made of a sphere;

And an elastic member (261) elastically supporting the second check valve (260) in the direction of closing the valve seat (252) at the upper end of the first piston shaft (250).
The method of claim 1,

The upper portion of the large cap 210 is provided with a cylindrical guide wall 213 protruding upward to surround the lower end of the coil spring 300 from the outside;

The bottom of the push head 280 wraps the upper end portion of the coil spring 300 from the outside, and when the push head 280 is pressed, a cylindrical skirt wall 283 wrapping the guide wall 213 from the outside is provided. Fluid pump dispenser, characterized in that formed.
The method of claim 1,

A fluid pump dispenser, characterized in that the nozzle-tip (284) formed inside the nozzle flow path (284a) bent from the horizontal to the lower end of the push head (280) is fitted.