KR100999932B1 - A fluid pumping-dispenser - Google Patents

Abstract

PURPOSE: A fluid pumping dispenser is provided to prevent the fluid remaining behind in the outlet side of the push head is inhaled in the state where the exhaust guide is risen with the push head to the negative pressure chamber of the negative pressure formation member and the leakage phenomenon is not created. CONSTITUTION: A fluid pumping dispenser includes a large cap(210), a cylinder(220), a first check valve(230), a hollow piston(240), a second check valve(250), an exhaust guide(270), a coil spring(280), and a push head(290). The large cap installs to the entrance of the container to the screw coupling method. The cylinder is installed in the inner side of the large cap on coaxial. And while the pressure chamber in which the fluid is inhaled in inside and which is temporarily stored is formed, the inlet prepares in the lower part for the fluid suction. The first check valve selectively opens and closes the inlet of cylinder according to the pressure chamber pressure gradient of cylinder while being arranged in the inlet direct image part of cylinder.

Description

Fluid Pumping Dispenser {A FLUID PUMPING-DISPENSER}

The present invention relates to a fluid pumping dispenser, and more particularly, to a fluid pumping dispenser mounted in a container containing a fluid (contents) and capable of suction pumping and discharging the fluid by repeatedly pressing the pushhead.

In general, a fluid pumping dispenser (FLUID PUMPING-DISPENCER) is installed in a container for storing a liquid or paste in a cosmetic or other fluid (contents) so that the fluid can be discharged by a predetermined amount by air pressure.

As shown in FIG. 1, the conventional fluid pumping dispenser is coupled to an inlet (not shown) of the container and has a pumping unit 10 provided with a pressure chamber 11a to temporarily store and inhale / pump the fluid, and the pumping unit. The pressure is applied to the pressure chamber 11a of the part 10 and is divided into a push head part 20 provided with a discharge port 21 for discharging the 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 14 elastically supported at the upper end of the coil spring 13, and having a through hole 14a formed at one side thereof, and the hollow piston 14 are slidable. The cylinder cap 15 penetrates and closes the upper end thereof, the connecting pipe 16 for connecting the outlet 21 of the push head part 20 and the upper end of the hollow piston 14, and the lower end of the cylinder 11. A ball valve 17 placed on the valve seat portion 11b is provided.

Therefore, when the user presses the push head portion 20, the hollow piston 14 descends while overcoming the elastic force of the coil spring 13, whereby the fluid filled in the pressure chamber 11a of the cylinder 11 is passed through 14a) → the hollow part of the hollow piston 14 → is discharged to the outside through the connection pipe 16 → the discharge port (21). At this time, the ball valve 17 abuts against 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 hollow piston 14 is raised by the elastic support force of the coil spring 13, and the through hole 14a is closed to block the fluid discharge and at the same time the pressure chamber of the cylinder 11. A vacuum is formed at 11a. Therefore, the fluid stored in the container is sucked and filled in the pressure chamber 11a 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 pumping dispenser, when the fluid pumping operation is stopped, the fluid that has not been discharged remains in the flow path of the discharge port 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. In recent years, the viscosity tends to increase depending on the high / predefinition of the fluid (contents) contained in the container. In the case of high viscosity fluid, the fluid remains in the discharge port 21 of the push head portion 20 and flows down later. Come.

In addition, in the conventional fluid pumping dispenser, since the coil spring 13 made of metal and the ball valve 17 made of steel are disposed inside the cylinder 11, which is a suction flow path of the fluid, they are discolored by the fluid when used for a long time. (Contents) There is also a risk of deterioration. In particular, in recent years, the fluid (contents) applied to the fluid pumping 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; An object of the present invention is to provide a fluid pumping dispenser that can effectively prevent the fluid leakage phenomenon after finishing the use of the product by re-suctioning the remaining fluid inside the pushhead at the moment when the pushhead is raised while finishing the fluid discharge.

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

The present invention for achieving the above object is a fluid pumping dispenser for suction pumping the fluid stored in the container to discharge to the outside;

The fluid pumping dispenser; A large cap mounted to the inlet of the container by a screw coupling method; A cylinder which is installed coaxially inside the large cap and has a pressure chamber in which fluid is sucked and temporarily stored therein and a suction port is provided at a lower portion of the cap; A first check valve disposed directly above the inlet of the cylinder and selectively opening and closing the inlet of the cylinder according to a pressure chamber pressure change of the cylinder; A hollow piston having a lower end in the cylinder so as to be movable upward and downward, an upper end extending upward through a central part of the large cap, and having an outlet at a center of an upper end thereof; A second check valve positioned above the hollow piston and selectively opening and closing the outlet of the hollow piston according to a pressure chamber pressure change of the cylinder; A lower pressure part is inserted into and coupled to an upper end of the hollow piston, and a negative pressure forming member which forms a negative pressure chamber therein by being provided with an outward flange-type locking jaw formed on the outside of the open top and a circular lip seal on the inside of the open top; A lower end portion is disposed to be slidable up and down outside the upper end portion of the negative pressure forming member, and the lower inner side has a cylindrical wall surface portion provided with a release preventing jaw so as to be prevented from being caught by the locking jaw during maximum elevation, and in the center of the cylindrical wall surface portion in the axial direction. A discharge guide having a lower end portion in close contact with the circular lip seal of the negative pressure forming member and configured to be in communication with the negative pressure chamber; A lower end is supported on an upper portion of the large cap and an upper end is supported on an upper end of a cylindrical wall surface portion of the discharge guide to elastically support the hollow piston upwardly with the discharge guide; A push head having a central portion connected to an upper end of the discharge passage of the discharge guide and having a discharge hole for discharging the fluid pumped through the discharge passage to the outside; .

The present invention also provides A valve rod having a cross-shaped cross-section so that the second check valve can be lifted and lowered at an outlet of the hollow piston and allow fluid discharge; A valve head provided integrally with an upper end of the valve rod and opening / closing an outlet of the hollow piston at an upper portion as the valve rod moves up and down; A locking step provided to protrude outward from a lower end of the valve rod so that the valve rod does not escape from the outlet of the hollow piston; .

The present invention also provides The outlet of the hollow piston is made of a tapered hollow hole that gradually narrows from the top to the bottom of the inner diameter; The valve head of the valve rod is characterized in that it is received and closed in the outlet of the hollow piston.

The present invention also provides A cylindrical guide wall surface protruding upward to surround the lower end of the coil spring on an upper portion of the large cap is provided to protrude upward; The push head surrounds the discharge guide together with the upper end of the coil spring from the outside, and when the push head is pressed, a skirt wall surface surrounding the guide wall surface is formed.

The present invention also provides The push head is provided so as to communicate with the discharge port is provided with a discharge bay to guide the discharge fluid to the lower side.

According to the fluid pumping dispenser according to the present invention made of the above configuration; After the fluid is discharged, the pressure applied to the push head is released, and when the discharge guide rises upward by the elastic restoring force of the coil spring, a vacuum pressure is instantaneously formed in the negative pressure chamber of the negative pressure forming member, which causes the discharge flow path of the discharge guide. And the remaining fluid which has not escaped to the outlet of the pushhead is re-sucked into the negative pressure chamber side of the negative pressure forming member. As a result, in the state in which the discharge guide is raised together with the push head after the use of the product, the fluid remaining at the discharge port side of the push head is sucked into the negative pressure chamber of the negative pressure forming member, so that the leakage phenomenon does not occur.

Further, according to the fluid pumping dispenser according to the present invention; The second check valve provided inside the negative pressure forming member is of a plate type that immediately opens and closes the outlet of the hollow piston in accordance with the pressure chamber pressure change, and re-suctions residual fluid at the moment when the discharge guide moves upward with the push head. There is also an immediate advantage.

Further, according to the fluid pumping dispenser according to the present invention; As the coil spring made of metal is disposed between the large cap and the discharge guide, there is no fear of corrosion because the coil spring is not in direct contact with the discharge fluid.

Further, according to the fluid pumping dispenser according to the present invention; Through the guide wall surface of the large cap and the skirt wall surface of the push head, there is an advantage in that the push head can be pushed easily and accurately.

Further, according to the fluid pumping dispenser according to the present invention; Through the discharge rod mounted on the push head there is an advantage that the user can accurately discharge the fluid in the desired direction.

1 is a schematic cross-sectional view of a conventional fluid pumping dispenser.
Figure 2 shows a state in which the fluid pumping dispenser according to the invention mounted on the container.
3 is a cross-sectional view showing the internal structure of the fluid pumping dispenser according to the present invention.
Figure 4 is a perspective view showing a first check valve applied to the fluid pumping dispenser according to the present invention.
5 is a perspective view showing a second check valve applied to a fluid pumping dispenser according to the present invention.
6 and 7 show the fluid pumping dispenser fluid discharge process of the present invention as the push head is lowered.
8 and 9 illustrate the fluid pumping dispenser fluid suction process of the present invention as the push head is raised.
10 shows another embodiment of the first check valve according to the present invention.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. {Brief description of the accompanying drawings, Figures 2 to 5 show the configuration of the fluid pumping dispenser according to the invention, Figures 6 to 9 shows the operating state of the fluid pumping dispenser according to the present invention, Figure 10 Another embodiment of the first check valve according to the present invention is shown.

2; A fluid 120 (contents) is contained in the container 100 to which the present invention is applied, and the inlet 110 of the container 100 sucks / pumps the fluid contained by a user's manual operation to discharge the fluid to the outside. The pumping dispenser 200 is mounted.

<Description of Configuration of Fluid Pumping Dispenser According to the Present Invention>

The fluid pumping dispenser 200 according to the present invention re-suctions the fluid 120 remaining in the discharge passage at the moment when the pushhead 290 rises again after the fluid is discharged while the pushhead 290 is pressed. To prevent leakage of the fluid 120; 2 and 3, the cap 100 is mounted to the inlet 110 of the container 100, and is installed coaxially inside the large cap 210 and for sucking the fluid 120 at the bottom The cylinder 220 provided with the inlet 221, the first check valve 230 for selectively opening and closing the inlet 221 of the cylinder 220, and the upper and lower sides of the cylinder 220 are disposed to be movable upwards. Is a hollow piston 240 extending upward through the central portion of the large cap 210 and having a discharge port 241, and a second check valve positioned at an upper end of the hollow piston 240 to selectively open and close the discharge port 241. 250 and the hollow piston 240 is coupled to the upper end of the open upper end of the engaging jaw 261 is formed and the inner lip seal 262 is formed to form a negative pressure chamber 263 therein The negative pressure forming member 260 and the upper portion of the negative pressure forming member 260 are disposed to be slidable up and down and have a central portion. A discharge guide 270 having a discharge flow path 271 disposed therebetween, and disposed between the discharge guide 270 and the large cap 210 to elastically support the hollow piston 240 upward with the discharge guide 270. The coil spring 280 is assembled to communicate with the upper end of the discharge flow path part 271 of the discharge guide 270 and is provided with a discharge hole 291 for discharging the fluid pumped through the discharge flow path part 271 to the outside. It has a pushhead 290.

Each of the components constituting the fluid pumping dispenser 200 according to the present invention is assembled by injection molding through a synthetic resin, except for the coil spring 280. Hereinafter, each component will be described in detail.

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, a female screw 211 is formed on the inner circumference of the large cap 210. And the upper surface of the large cap 211 is provided with a spring-mounted portion 212 in the form of a ring so that the lower end of the coil spring 280 is mounted, the coil spring 280 to the outside of the spring-mounted portion 212 The cylindrical guide wall surface 213 protruding upward to surround the lower end of the upper surface is provided to protrude upward. The guide wall surface 213 not only surrounds the coil spring 280, but also stably guides the lifting / lowering operation of the push head 290.

The cylinder 220 is installed coaxially inside the large cap 210, and a pressure chamber 223 for sucking and temporarily storing the fluid 120 is provided therein, and a fluid 120 below the cylinder 220. A suction port 221 is provided for suction. The inlet 221 of the cylinder 220 has a valve seat 222 for seating the first check valve 230, and also includes a suction tube extending to the bottom of the container 100 in which the fluid 120 is contained. 224 is fitted and coupled to guide fluid 120 suction. Reference numeral 225 denotes a negative pressure hole perforated on the upper wall of the cylinder 220, and as the fluid 120 in the container 100 exits, external air flows through the negative pressure hole 225 to fill an empty space. It is intended to be.

In addition, the first check valve 230 is disposed in the valve seat 222 provided at the inlet 221 of the cylinder 220, and the inlet 221 is changed in accordance with the pressure change of the pressure chamber 223 of the cylinder 220. It is selectively opened and closed. In the first embodiment of the present invention, as shown in FIG. 4, the first check valve 230 is a circular body 231 fitted to and coupled to an upper portion of the inlet 221 of the cylinder 220, and the circular body ( A valve plate 232 provided inside the 231 to open and close the inlet 221 of the cylinder 220, and a connecting bridge for integrally connecting the edge of the valve plate 232 to the inner wall of the circular body 231. 233). Circular body 231 is made of a donut shape so as to be fitted to be arranged in the interference fitting method on the lower inner wall of the cylinder (220). The valve plate 232 is formed of a circular plate having a predetermined diameter so as to cover the inlet 221 of the cylinder 220 at the upper part with a margin to open and close it, and the edge of the valve plate 232 is a circular body 231. It is configured to form a constant gap (S) with the inner wall of. The valve plate 232 is integrally connected to the inner wall of the circular body 231 through the "S" shaped connection-bridges 233 having elastic restoring force. That is, one end of the "S" -shaped connection bridge 233 is connected to the edge of the valve plate 232, the other end thereof is connected to the inner wall of the circular body 231, the valve plate 232 is up and down direction ( A slight movement is possible with reference to the arrow direction of FIG. 4). Therefore, when the pressure in the pressure chamber 223 is lowered due to the lifting and lowering of the hollow piston 240, the valve plate 232 is lifted upwards and the fluid 120 in the container 100 is connected to the inlet 221 of the cylinder 220. Up through the gap (S) between the valve plate 232 and the circular body 231 is filled in the pressure chamber 223. In the embodiment of the present invention, by configuring three connection-bridges 233 at 120 degree intervals, the resistance received when the fluid 120 exits is minimized.

Hollow piston 240 is made of a hollow hollow hollow body, the lower portion thereof is provided with a close contact portion 242 is in close contact with the inner wall of the cylinder 220, the shandong (see the arrow direction in Figure 3) to enable the cylinder 220 Is accommodated). And the upper end portion of the hollow piston 240 extends upward through the central portion of the large cap 210, the outlet 241 is formed in the center of the top surface. The outlet 241 is made up of a hollow hole of a tapered shape gradually narrower from the upper side to the lower side, so that the valve head 253 of the second check valve 250, which will be described later, is accommodated so as to be closed securely. To do this.

Negative pressure forming member 260 is formed in a cylindrical shape of the upper and lower parts and the lower end is coupled to the upper end of the hollow piston 240 in a coaxial coercive manner. Outwardly open upper end of the negative pressure forming member 260 is formed with an outward flange-shaped locking jaw 261, which is to allow the lower end of the discharge guide 270 to slide up and down a predetermined section without being separated. . That is, a sliding section is formed on the upper outer wall of the negative pressure forming member 260 from the locking step 261 to the lower side of the predetermined section. In addition, a circular lip seal 262 is provided inside the open upper end of the negative pressure forming member 260 to form a negative pressure chamber 263 in a space between the upper end of the hollow piston 240. As described above, the negative pressure forming member 260 is coupled to the upper end of the hollow piston 240 by an interference fit method, thereby moving up and down integrally with the hollow piston 240.

The second check valve 250 selectively opens and closes the outlet 241 of the hollow piston 240 according to the pressure change of the pressure chamber 223 of the cylinder 220. In the embodiment of the present invention, as shown in FIGS. 3 and 5, the second check valve 250 includes a valve rod 251 which is disposed to be lowered and lowered at an outlet 241 of the hollow piston 240. The valve rod 251 is integrally provided with the valve head 253 which is integrally provided to open and close the outlet 241 of the hollow piston 240 from above. The valve rod 251 is configured to have a cross-shaped cross section to allow the fluid 120 to be discharged while freely descending from the outlet 241 of the hollow piston 240, the lower end of the locking projection 252 to protrude outwards It is provided so that the valve rod 251 is not separated upward from the outlet 241 of the hollow piston 240. In addition, the valve head 253 is opened and closed with the valve rod 251 to open and close the outlet 241 of the hollow piston 240 from above, and its appearance corresponds to the shape of the outlet 241 of the hollow piston 240. It consists of. Accordingly, when the valve head 253 of the second check valve 250 is seated at the outlet 241 of the hollow piston 240, the movement of the fluid 120 through it is completely blocked.

On the other hand, the discharge guide 270, as shown in Figures 2 and 3, the cylindrical wall surface portion 272 that is slidably mounted to the outside of the upper end of the negative pressure forming member 260, and the cylindrical wall surface portion 272 of It is formed through a synthetic resin so as to have a discharge passage portion 271 provided in the center in the axial direction and penetrating the circular lip seal 262 of the negative pressure forming member 260. Cylindrical wall portion 271 is disposed so that the lower end is slidable up and down outside the upper end of the negative pressure forming member 260, the lower inner side of the cylindrical wall is caught by the locking jaw 261 of the negative pressure forming member 260 at the time of maximum lift. A departure prevention jaw 273 is provided to prevent it. In addition, the top of the cylindrical wall surface portion 272 is provided with a spring-supporting portion 274 of the outward flange form to support the top of the coil spring 280. The discharge flow path part 271 is provided in the center of the cylindrical wall surface part 272 in the axial direction, and the lower pressure part is in close contact with the circular lip seal 262 of the negative pressure forming member 260 and the negative pressure chamber of the negative pressure forming member 260. 263 is communicated with.

In addition, the coil spring 280 is a kind of compression spring made by winding a steel wire spirally, the lower end of which is supported by a spring-receiving portion 212 provided at an upper portion of the large cap 210, the upper end of which is a discharge guide ( It is arranged to be supported by the spring-supporting portion 274 provided on the upper end of the cylindrical wall surface portion 272 of 270. Therefore, the hollow piston 240 together with the discharge guide 270 is always elastically supported in the upward direction by the coil spring 280. The coil spring 280 is disposed between the large cap 210 and the discharge guide 270 does not directly contact the discharged fluid 120, there is no fear of deterioration of the fluid 120.

And the push head 290 is assembled so that the central portion in direct communication with the top of the discharge flow path (271) of the discharge guide 270, the inside of the fluid 120 pumped through the discharge flow path (271) outside Discharge openings 291 for discharging the air are formed in the horizontal direction. Therefore, the user may press the push head 290 directly to lower the hollow piston 240 together with the discharge guide 270 while compressing the coil spring 280. The push head 290 wraps the discharge guide 270 with the upper end of the coil spring 280 from the outside, and when the push head 290 is pressed, a skirt wall surface for wrapping the guide wall surface 213 of the large cap 210 from the outside ( 292 is formed in a cylindrical shape, through which the push head 290 can be pressed and operated easily and accurately. have. In addition, the push head 290 is provided with a discharge container 300 in the form of a tube inserted to communicate with the discharge port 291 to guide the discharge fluid 120 inclined downward, through which the fluid 120 in the direction desired by the user Can be discharged.

<Description of the operation of the fluid pumping dispenser according to the present invention>

Next, the operation of the fluid pumping 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 discharge guide 270 and the hollow piston 240 are raised together with the push head 290 by the elastic support force of the coil spring 280, and the cylinder 220. In the pressure chamber 223 of the fluid 120 is sucked through the suction tube 224 is stored (see Fig. 2).

In this state, the user presses the pushhead 290 slightly as shown in FIG. 6 (see arrow A direction in FIG. 6); The discharge guide 270 slides along the outside of the upper end of the negative pressure forming member 260 while overcoming the elastic supporting force of the coil spring 280 so that the upper surface of the discharge guide 270 is in contact with the upper end of the negative pressure forming member 260. At this time, the lower end of the discharge passage portion 271 of the discharge guide 270 is maintained therebetween so as not to interfere with the opening and closing operation of the second check valve 250.

7, the user further pushes the pushhead 290 (see arrow A direction in FIG. 7); The negative pressure forming member 260 and the hollow piston 240 descend together with the discharge guide 270. Accordingly, the fluid 120 filled in the pressure chamber 223 of the cylinder 220 lifts the second check valve 250 upwardly, and then discharges 241 of the hollow piston 240 → negative pressure forming member 260 → discharge guide. 270 is discharged to the outside through the discharge passage 271 → the discharge port 291 of the push head 290 → the discharge container 300 (see the dotted arrow direction in Fig. 7). At this time, the first check valve 230 disposed at the inlet 221 of the cylinder 220 is in close contact with the valve seat 222 by the lower pressure of the fluid 120 in the pressure chamber 223 and thus the pressure chamber 223. Blocks communication with the inside of the container 100. The closing operation of the first check valve 230 is performed from the moment when the hollow piston 240 descends because the fluid 120 is filled in the hollow piston 240. That is, the fluid 120 filled in the pressure chamber 223 at the moment when the hollow piston 240 descends together with the push head 290 pressurizes the first check valve 230 downward, and thus the cylinder 220. The suction port 221 is firmly closed so that there is no pressure loss during the pumping operation. In addition, in the state where the push head 290 is lowered to the maximum, the fluid 120 that has not been discharged may remain in the discharge port 291 and the discharge container 300 of the push head 290.

8 and 9, when the user releases the push head 290; the discharge guide 270 and the push head 290 together with the hollow piston 240 by the restoring force of the coil spring 280 As soon as it rises (refer to arrow B direction), vacuum pressure is simultaneously applied to the pressure chamber 223 and the negative pressure chamber 263 by this.

That is, as shown in FIG. 8, the moment of releasing the push head 290 until the discharge guide 270 is caught by the latching jaw 261 of the negative pressure forming member 260 by the elastic restoring force of the coil spring 280. At the same time, the second check valve 250 closes the outlet 241 of the hollow piston 240, and a vacuum pressure is applied to the negative pressure chamber 263 of the negative pressure forming member 260. The fluid 120 remaining in the discharge port 291 of the push head 290 and 300 is re-sucked into the negative pressure chamber 263 (see the dotted arrow direction in FIG. 8).

In addition, as shown in FIG. 9, as the hollow piston 240 is raised (see arrow B direction), a vacuum pressure is formed in the pressure chamber 223 of the cylinder 220, so that a valve of the first check valve 230 is provided. The plate 232 (see FIG. 4) is slightly lifted from the valve seat portion 222, which causes the inlet 221 to be opened so that a portion of the fluid 120 in the container 100 may open the inlet tube 224 and the inlet 221. Through the pressure chamber 223. In addition, the container 100 in which a part of the fluid 120 is removed is filled with external air by the volume through the negative pressure hole 225, and the fluid pumping dispenser 200 according to the present invention is maintained in an initial state.

By repeating such a series of processes, the fluid 120 contained in the container 100 may be suction pumped through the fluid pumping dispenser 200 according to the present invention.

As such, in the state in which the hollow piston 240 is raised together with the push head 290, the fluid 120 does not remain in the discharge container 300 and the discharge port 291 of the push head 290. Leakage does not occur even if left unattended. Therefore, the fluid pumping dispenser 200 according to the present invention can be applied to a container product containing a high viscosity fluid. In addition, the push head 290 is pressed and operated accurately without distortion through the guide wall surface 213 and the skirt wall surface 292 of the large cap 210, the fluid 120 is discharged through the 300 and the direction desired by the user It is discharged at an appropriate discharge pressure.

Meanwhile, in the embodiment of the present invention, although the first check valve 230 is applied as a plate type, as shown in FIG. 10, the first check valve 230A is a rod type provided with a reverse conical valve body at a lower end thereof. It may be arranged so that the valve seat portion 222 of the suction port 221 can be selectively opened and closed by the pressure change of the pressure chamber 223. In addition, although not shown, the first check valve 230 may be configured as a ball valve (steel ball).

100 .. Container 120. Fluid 200. Fluid pumping dispenser
210. Large cap 220 Cylinder 221 Inlet
223 Pressure chamber 230 First check valve 240 Hollow piston
241 .. outlet 250. second check valve 260. negative pressure forming member
270. Ejection guide 280 Coil spring 290 Pushhead
300. Discharge Long

Claims (5)

In the fluid pumping dispenser for suction pumping the fluid 120 stored in the container 100 to discharge to the outside,
The fluid pumping dispenser 200 is;
A large cap 210 mounted on the inlet 110 of the container 100 by screwing;
The cylinder is installed coaxially on the inside of the large cap 210, the pressure chamber 223 is formed therein for the fluid 120 is sucked and temporarily stored therein, the lower cylinder is provided with the inlet 221 for suction of the fluid 120 220;
A first check valve disposed at an upper portion of the inlet 221 of the cylinder 220 and selectively opening and closing the inlet 221 of the cylinder 220 according to a pressure change of the pressure chamber 223 of the cylinder 220; 230;
A hollow piston 240 having a lower end in the cylinder 220 so as to be movable upward and downward, an upper end extending upward through a central part of the large cap 210, and having an outlet 241 formed at the center of the upper end thereof;
A second check valve 250 positioned above the hollow piston 240 to selectively open and close the outlet 241 of the hollow piston 240 according to a pressure change in the pressure chamber 223 of the cylinder 220; ;
The lower end is coupled to the upper end of the hollow piston 240, the outer side of the open top is formed with a latching jaw 261 of the outward flange form and the open upper inner circular lip seal 262 is provided inside the negative pressure chamber A negative pressure forming member 260 forming 263;
Cylindrical wall surface portion 272 is provided with a lower end is arranged to be slidable up and down outside the upper end of the negative pressure forming member 260, the separation prevention jaw (273) is provided on the lower inner side so as to be prevented from being caught by the locking jaw (261) at the maximum lift. And an outlet flow path portion 271 provided in the center of the cylindrical wall surface portion 272 in the axial direction and having a lower end in close contact with the circular lip seal 262 of the negative pressure forming member 260 and communicating with the negative pressure chamber 263. A discharge guide 270 formed of;
The lower end is supported on the upper portion of the large cap 210 and the upper end is supported on the upper end of the cylindrical wall surface portion 272 of the discharge guide 270 to elastically the hollow piston 240 with the discharge guide 270 in an upward direction. Supporting coil springs 280;
A center portion is assembled to communicate with the upper end of the discharge flow path portion 271 of the discharge guide 270, the inside of the push head provided with a discharge port 291 for discharging the fluid pumped through the discharge flow path portion 271 to the outside 290; Fluid pumping dispenser characterized in that it comprises. The method of claim 1,
The second check valve 250 is;
A valve rod 251 disposed on the outlet 241 of the hollow piston 240 and having a cross-shaped cross section to allow fluid discharge;
A valve head 253 integrally provided at an upper end of the valve rod 251 and opening / closing an outlet 241 of the hollow piston 240 at an upper portion thereof in accordance with a lifting and lowering movement of the valve rod 251;
A catching jaw 252 provided to protrude outward from a lower end of the valve rod 251 so that the valve rod 251 is not separated from the outlet 241 of the hollow piston 240; Fluid pumping dispenser characterized in that it comprises. The method of claim 2,
The discharge port 241 of the hollow piston 240 is made of a hollow hole of the tapered shape gradually narrower from the upper side to the lower side;
The valve head 253 of the valve rod 250 is accommodated in the outlet 241 of the hollow piston 240, characterized in that the fluid pumping dispenser. The method of claim 1,
The upper portion of the large cap 210 is provided with a cylindrical guide wall surface 213 protruding upward to surround the lower end of the coil spring 280 is projected upward;
The push head 290 surrounds the discharge guide 270 with the upper end of the coil spring 280 from the outside, and when the push head 290 is pressed, a skirt wall surface 292 surrounding the guide wall surface 213 from the outside. Fluid pumping dispenser characterized in that formed. The method of claim 1,
The push head (290) is a fluid pumping dispenser, characterized in that provided in the discharge port 291 is connected to communicate with the discharge barrel 300 to guide the discharge fluid 120 to the lower side.

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