WO2012077854A1

WO2012077854A1 - Foaming pump assembly for a liquid vessel

Info

Publication number: WO2012077854A1
Application number: PCT/KR2011/000254
Authority: WO
Inventors: 이용대
Original assignee: 주식회사 아폴로산업
Priority date: 2010-12-10
Filing date: 2011-01-13
Publication date: 2012-06-14
Also published as: KR20100137407A

Abstract

The present invention relates to a foaming pump assembly for a liquid vessel, and has the object of improving the arranged structure of a spring and the structure of an inlet valve in order to prevent the spoilage of the contents, and also to improve product responsiveness. With the foaming pump assembly for a liquid vessel according to the present invention, a coil spring (290) formed of metal is installed vertically at the center of an air cylinder (222) so as to enclose the outer periphery of a solution piston unit (280), in order for a push head (240), an air piston (270), and a liquid piston unit (280) to not be disposed eccentrically, but to be operated in the proper position so as to improve the responsiveness of the product to the user, as well as to not have the metal coil spring (290) come into contact with the liquid contents so as to enable the product to be used for a long time without discoloration or the spoiling of the contents. Further, the inlet valve (230) which opens and closes an inlet (223) is manufactured of a synthetic resin so as to impart an inherent resilient elasticity thereto and to not be prone to corrosion upon coming into contact with the liquid contents, thereby contributing to enhance product reliability. In addition, the vertical movement of the liquid piston unit (280) is guided and accurately disposed by means of a bushing (226) disposed at the upper portion of a solution cylinder (224) in order to further improve product responsiveness. Moreover, when the descending movement of the push head (240) is restricted by a stopper (300), even if external force is exerted on the product during the shelf life of the product, leakage of the liquid contents can be prevented.

Description

Foaming pump assembly for liquid containers

The present invention relates to a foaming pump assembly, and more particularly, to a foaming pump assembly for a liquid container that pumps the liquid contents stored in the liquid container while mixing air to generate bubbles and ejects them to the outside.

In general, the foaming pump assembly (FOAMING PUMP ASSEMBLY) is widely used in mousse, face cream, liquid soap, body shower shampoo, dishwashing detergent, etc. to set the hairstyle, and mixes the appropriate amount of gas with liquid contents It is used in the form of extrusion to generate bubbles. However, in the product to which the conventional forming pump assembly is applied, since the compressed gas must be filled in the container, there is a considerable technical difficulty in manufacturing, and there is an inconvenience to shake every use. In addition, in the inclined state of the product container there is a disadvantage that only the compressed gas is injected without blowing the filling liquid into the foam state.

In order to solve this drawback, recently, a forming pump assembly that adequately mixes external air and liquid contents and blows it into bubbles without filling or shaking it is disclosed in Korean Registered Utility Model Publication No. 20-0169773. Air valve device of the bubble generator).

The forming pump assembly disclosed in Korean Utility Model Publication No. 20-016773 has a cap (1) coupled to the neck of the container (A) in which the contents (liquid) is stored, as shown in FIG. The long cylindrical liquid cylinder 2c fixed inside the cap 1 and having an air cylinder 2a with a matching hole 2b bored therein and the contents (liquid) entering the lower center of the air cylinder 2a integrally A nozzle (3) having a formed cylinder body (2), an outlet (3a) supported by a cap (1) so that one end of the cylinder body (2) enters and exits, and a bubble is injected, and the nozzle (3) inner circumference The upper part is fixed at the upper part and the lower outer periphery is installed in close contact with the inner cylinder of the air cylinder (2a) of the cylinder body (2) and presses the air cylinder (2a) when pressing the nozzle (3) and expands the upper part and , Between the coil spring (5) and the air piston (4) provided under the solution cylinder (2c) of the cylinder body (2) A liquid piston (6) installed at the bottom of the liquid cylinder (2c) of the cylinder body (2), which is installed to elastically support the nozzle (3) upward and guide the compressed air and contents to the upper portion of the air piston (4). A ball 8 for selectively opening and closing the suction port 7 is provided. And inside the nozzle 3, a sieve 9 for filtering bubbles is arranged.

In this conventional forming pump assembly, by repeatedly pressing the nozzle (3), the contents (liquid) filled in the container (A) is sucked / pumped through the liquid cylinder (2c) and at the same time the air in the air cylinder (2a) is mixed while blowing Then, it is blown out through the outlet 3a of the nozzle 3 while passing through the sieve 9 and being filtered by the even foam.

However, in the conventional forming pump assembly, since the coil spring 5 and the ball 8 made of metal are arranged inside the liquid cylinder 2c, which is a suction flow path of the liquid contents, the coil spring is formed by the liquid contents when used for a long time. Of course, the color (5) and the ball (8) is discolored, and the liquid contents may also be deteriorated.

In particular, in recent years, the contents of the product to which the forming pump assembly is applied are gradually becoming more functional, and since the metal coil springs 5 and the balls 8 are always in contact with the contents inside the liquid cylinder 2c, corrosion may proceed. There is a problem that can be.

The present invention is to solve this problem; It is an object of the present invention to improve the arrangement of the spring and the inlet valve structure to prevent the deterioration of the contents as well as to provide a forming pump assembly for a liquid container that can further improve product responsiveness.

In addition, another object of the present invention is to provide a foaming pump assembly for a liquid container in which the contents and external air are efficiently and stably mixed to facilitate the ejection of the contents in the form of bubbles.

In addition, another object of the present invention is to provide a foaming pump assembly for a liquid container that can be used in a stable product by adding a stopper structure to the push head, and can prevent leakage during distribution.

The present invention for achieving this object is; A foaming-pump assembly for a liquid container, which is mounted to a container in which liquid contents are contained, and mixes external air while pumping the liquid contents to eject the bubbles.

The forming-pump assembly for the liquid container; A cap attached to the neck of the container by screwing and having a through hole formed in the center of the upper surface thereof; The air cylinder is installed coaxially inside the cap and is temporarily stored by the intake of external air, and has a negative pressure hole perforated on the upper wall, and extends downward from the bottom of the air cylinder. A cylinder body having a liquid cylinder provided with an inlet for suction of liquid contents; According to the internal pressure of the liquid cylinder while maintaining a constant gap with the inner wall of the circular body through a plurality of connecting bridges having elastic restoring force inside the circular body and coupled to the cylindrical body fitted directly above the liquid cylinder inlet of the cylinder body A suction valve in which a valve plate for selectively opening and closing the suction port is integrally provided through a synthetic resin; A cylindrical guide portion for passing up and down the air cylinder upper space of the cylinder body through the through hole of the cap, a vertical discharge passage provided in the axial direction inside the guide portion, and horizontally from the upper end of the vertical discharge passage A push head having a spout extending in a direction; The cylindrical part is inserted into the lower end by the vertical discharge of the push head and the piston-coupling part is formed integrally with the lower edge of the cylindrical part. A piston shaft which is drilled and is formed at an edge of the piston coupling portion to form an air passage for inflow of external air, and moves up and down together with the push head; A filtering member formed of a cylindrical shape in which a lower end is fitted into and coupled to an upper end of the cylindrical portion of the piston-shaft, and a filtering net is provided on upper and lower surfaces thereof; A central portion is coupled to the piston-coupling portion of the piston shaft to selectively open and close the aeration passage, and an edge thereof is in close contact with an inner wall of the air cylinder of the cylinder body to pressurize the air inside the air cylinder when the push head is lowered, so that the piston An air piston pumped to the inlet side of the shaft and perforated with an air hole to allow external air to flow into the air cylinder during the lifting movement; It is made of a hollow body having a solution flow path in the longitudinal direction therein, the upper end is received in the center portion of the air piston is coupled in communication with the center of the piston-axis and the lower end is movable up and down inside the solution cylinder of the cylinder body A piston-rod disposed to be coupled to surround a communication hole drilled at a lower end of the piston-rod, which is in close contact with the inner wall of the solution cylinder, and selectively opens and closes the communication hole according to the pressure of the solution cylinder, and lowers the push head. A solution piston unit comprising a piston for applying pressure to the solution cylinder to pump liquid contents through the communication hole toward the solution flow path; The upper end is supported in contact with the outward flange portion provided in the piston-rod upper portion of the solution piston unit, the lower end is supported by seating on the bottom of the air cylinder of the cylinder body, the coil spring for restoring the solution piston unit and the air piston and push head ; It is characterized by including.

In addition, the present invention; A cylindrical bush is disposed at the upper end of the solution cylinder of the cylinder body to guide the shank movement of the solution piston unit piston-rod.

In addition, the present invention; The liquid container-forming pump assembly is provided with a locking portion detachably coupled to the guide portion of the push head exposed to the upper portion of the cap so as not to move the push head up and down, and protrudes at the tip of the locking portion. A stopper including a cover part covering a tip of the jet port of the push head; It is characterized by further comprising.

According to the forming pump assembly for a liquid container according to the present invention made of a configuration as described above; The coil spring made of metal is installed in the center of the air cylinder so as to surround the outside of the solution piston unit, so that the push head, the air piston and the solution piston unit operate in the right position without being eccentric, thereby improving the use response of the product. Since the metal coil spring does not come into contact with the liquid contents, there is an advantage that the discoloration or contents are not changed even when the product is used for a long time.

In addition, according to the present invention; The suction valve to open and close the suction port is also made of synthetic resin and operates by its elastic restoring force, so that there is no fear of corrosion even when contacted with liquid contents, thereby improving product reliability.

In addition, according to the present invention; Since the shandong copper of the solution piston unit is accurately made while being guided through the bush disposed on the upper portion of the solution cylinder, there is an advantage that the product responsiveness is further improved.

In addition, according to the present invention; By limiting the downward movement of the push head through the stopper, even if an external force is applied during the distribution of the product, there is an effect that the leakage of liquid contents does not occur.

Figure 1 schematically shows a forming pump assembly for a conventional liquid container.

2 shows a state in which the forming pump assembly according to the present invention is mounted in a liquid container.

Figure 3 shows an enlarged internal structure of the forming pump assembly for a liquid container according to the present invention.

Figure 4 shows an enlarged state of the suction valve mounting state of the forming pump assembly for a liquid container according to the present invention.

Figure 5 is a bottom perspective view showing a suction valve of the forming pump assembly for a liquid container according to the present invention.

Figure 6 is an enlarged view showing the arrangement of the piston-axis and the air piston of the forming pump assembly for a liquid container according to the present invention.

7 and 8 show the operating state of the forming pump assembly for a liquid container according to the invention; Figure 7 shows the contents ejection process, Figure 8 shows the restoration process to the initial state after the contents ejection.

9 and 10 show the structure and the locking state of the stopper applied to the forming pump assembly for a liquid container according to the present invention.

100. Container 110. Neck 200. Forming pump assembly

210. Cap 211. Through hole 220. Cylinder body

221..Negative pressure hole 222.Air cylinder 223.Intake

224 Liquid cylinder 226 Bush 230 Suction valve

240. Push head 250. Piston shaft 260 Filter member

270 Air Piston 280 Solution Piston Unit Coil Spring

300..stopper

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Briefly, the accompanying drawings, Figures 2 to 6 are for explaining the configuration of the foaming pump assembly for a liquid container according to the present invention, Figures 7 and 8 illustrate the operating state of the foaming pump assembly for a liquid container in the present invention It is seen. 9 and 10 show the stopper structure of the forming pump assembly for a liquid container and the state of use thereof.

2 and 3; The forming pump assembly 200 for a liquid container according to the present invention is mounted on the container 100 in which the liquid contents are contained, and mixes air while pumping the contents to generate bubbles and ejects them to the outside; Cap 210 mounted on the neck 110 of the container 100, the air cylinder 222 is installed coaxially in the interior of the cap 210 and temporarily stored in the outside air and the liquid contents are temporarily stored A cylinder body 220 having a solution cylinder 224, a suction valve 230 selectively opening and closing the inlet port 223 provided at the bottom of the solution cylinder 224 of the cylinder body 220, and a user presses and operates the cylinder body 220. A piston disposed at an upper portion of the cap 210 and provided with a contents ejection opening 243, mounted at a lower portion of the push head 240, and having a filtering member 260 therein. A shaft 250, an air piston 270 disposed below the piston-axis 250 and pressurized by the air inside the air cylinder 222 to pump to the push head 240 when descending, and a solution cylinder 224. A solution piston unit 280 for pumping the internal solution of the pump to the push head 240 and the solution piston oil It is equipped with a coil spring 290 for restoring 280 and air piston 270 and the push head 240. Each component constituting the liquid pump forming pump assembly 200 is formed of a synthetic resin as a raw material except for the coil spring 290, and their detailed structure is as follows.

First, the cap 210 is formed in a circular threaded manner to the neck 110 of the container 100 in which the liquid contents are formed in a circular shape, for which the female thread is processed on the inner wall of the cap 210. In addition, the through hole 211 is drilled in the center of the upper surface of the cap 210 so that the lower end of the push head 240 may be lifted and lowered.

The cylinder body 220 is installed coaxially inside the cap 210, and is temporarily stored by intake of external air, and has an air cylinder 222 having a negative pressure hole 221 perforated on an upper wall thereof, and the cylinder of the air cylinder 222. It is defined as a liquid cylinder 224 provided concentrically from the bottom and extending downwards, wherein the liquid contents are temporarily stored for inhalation. The negative pressure hole 221 is intended to smoothly discharge the contents by filling the outside air as the liquid contents stored in the container 100 escapes. In addition, the bottom of the liquid cylinder 224 is provided with a suction port 223 for suction of the liquid contents, the suction tube 120 extending to the bottom of the container 100 is coupled to the lower side of the suction port 223 in communication. In addition, a cylindrical bush 226 is fixedly disposed on the upper portion of the liquid cylinder 224 to guide the shanghai of the piston rod 281 of the solution piston unit 280 described later.

Intake valve 230 for selectively opening and closing the inlet 223 of the solution cylinder 224, as shown in Figures 4 and 5; The inner wall of the circular body 231 through a circular body 231 is inserted into the upper portion of the inlet 223 of the solution cylinder 224 and coupled to, and a plurality of connecting bridges 232 having elastic restoring force inside the circular body 231. It is defined as a valve plate 233 to substantially open and close the inlet 223 in accordance with the internal pressure of the liquid cylinder 224 while maintaining a constant gap (G). Accordingly, when the suction valve 230 is completely pushed into the bottom of the solution cylinder 224, the valve plate 233 covers the upper portion of the suction port 223 with sufficient margin. The circular body 231 and the plurality of connection bridges 232 and the valve plate 233 constituting the intake valve 230 are integrally formed through a synthetic resin, which opens and closes the inlet 223 with its elastic restoring force. Of course, this is to prevent the deterioration even in contact with the liquid contents.

Pushhead 240 is actually pressed by the user to operate, as shown in Figures 2 and 3; A cylindrical guide portion 241 which passes through the through hole 211 of the cap 210 and enters the upper space of the air cylinder 222 of the cylinder body 220 up and down, and the shaft inside the guide portion 241. A vertical discharge path 242 provided in the direction, and a jet port 243 extending in the horizontal direction from the upper end of the vertical discharge path 242. Accordingly, the push head 240 is assembled such that the guide part 241 is movable up and down while passing through the through hole 211 of the cap 210.

The piston-shaft 250 is as shown in FIGS. 3 and 6; Mixing space is secured to move up and down with the push head 240 and the liquid contents and the air is injected therein, the cylindrical portion 251 is fitted to the bottom of the vertical discharge passage 242 of the push head 240 And, the outer periphery of the lower end of the cylindrical portion 251 is provided with a piston-coupling portion 252 integrally. In the center of the bottom surface of the cylindrical portion 251 of the piston-shaft 250, an inlet 253 through which liquid contents are introduced is drilled, and at the edge of the piston-coupled portion 252, a vent for inflow of external air is provided. 254 is formed. In addition, a filter member 260 for evenly blowing bubbles is disposed at the upper end of the cylindrical portion 251 of the piston shaft 250. The filtering member 260 is formed in a cylindrical shape having two steps so that the lower end is inserted into the upper end of the cylindrical portion 251 by a forced fitting method, and the filtering nets 261 and 262 are provided on the upper and lower surfaces thereof. Therefore, the pressurized air and the liquid contents introduced through the inlet 253 of the piston shaft 250 are mixed into the even bubbles through the filtering member 260.

In addition, the air piston 270 descends together with the push head 240 to pressurize the air inside the air cylinder 222 to export to the inlet 253 side of the piston-shaft 250, and form a diaphragm through a soft synthetic resin. The center portion is coupled to the piston coupling portion 252 of the piston shaft 250 to selectively open and close the aeration passage 254 and the edge closely adheres to the inner wall of the air cylinder 222 of the cylinder body 220. Consists of. Therefore, when the push head 240 descends, the air cylinder 222 is pressurized to pump the air to the inlet 253 side of the piston-shaft 250. In addition, the air hole 271 is perforated in the middle of the air piston 270 so that external air flows into the air cylinder 222 through the air passage 254 during the lifting movement (in the restoration process).

In addition, the solution piston unit 280 is for lowering with the push head 240 to pressurize the liquid contents inside the solution cylinder 224 to export to the inlet 253 side of the piston-axis 250, Figure 2 and Figure As shown in 3; It consists of a hollow body having a solution flow path 282 secured in the longitudinal direction therein, the upper end is received in the center portion of the air piston 270 is coupled in communication with the center (inlet; 253) of the piston-axis 250 and the lower end of the cylinder The piston-rod 281 is disposed to move up and down inside the solution cylinder 224 of the body 220, and is coupled to surround the communication hole 283 perforated at the lower end of the piston-rod 281, The piston 284 is in close contact with the inner wall of the cylinder 224 and selectively opens and closes the communication hole 283 according to the internal pressure of the solution cylinder 224. Accordingly, when the solution piston unit 280 is lowered together with the push head 240, pressure is applied to the solution cylinder 224 to pump the liquid contents through the communication hole 283 toward the solution flow path 282. The piston-rod 281 raising and lowering movement of the solution piston unit 280 is made without distortion through the bush 226 as described above.

The coil spring 290 is for restoring the push head 240 and the air piston 270 and the solution piston unit 280 to an initial state; In the center of the air cylinder 222 to be filled with the outside air is placed upright to surround the outer portion of the solution piston unit 280. That is, the upper end 291 of the metal coil spring 290 is supported on the upper portion of the solution piston unit 280, and the lower end 292 thereof is seated and supported on the bottom surface 225 of the air cylinder 222. In order to install the coil spring 290, an outward flange portion 285 is formed on the piston rod 281 of the solution piston unit 280 and has a spring-supporting jaw (not shown). .

Next will be described with reference to Figures 2 and 7 and 8 the operation and the effects of the forming pump assembly for a liquid container according to the present invention configured as described above.

First, as shown in FIG. 2, in the initial state of the forming pump assembly 200 for a liquid container, the push head 240, the air piston 270, and the solution piston unit 280 are moved upward by the coil spring 290. The air cylinder 222 is filled with air, and a small amount of liquid content sucked through the suction tube 120 is stored in the air cylinder 222.

In this state, as shown in FIG. 7; When the user pushes the push head 240 downward, the coil spring 290 is compressed and the air piston 270 and the solution piston unit 280 descend. As the air piston 270 descends, the air inside the air cylinder 222 is pressurized and continues to exit the center of the piston shaft 250, that is, the inlet port 253. In addition, when the solution piston unit 280 is lowered while being supported by the bush 226, the liquid contents in the solution cylinder 224 are inside the piston rod 281, that is, the solution flow path 282, through the communication hole 283. Is pumped to the inlet 253 side of the piston-shaft 250. Accordingly, the inlet 253 of the piston-shaft 250 forms bubbles by mixing the pumped liquid contents and the pressurized air, and these bubbles pass through the filter member 260 through the outlet 243 of the push head 240. Eject evenly. As the internal pressure of the air cylinder 222 is increased by the lowering of the air piston 270 in the process of ejecting the liquid contents, the air passage 254 into which external air is introduced is closed, and the solution cylinder is lowered by the lowering of the solution piston unit 280. As the internal pressure increases, the suction valve 230 is maintained in a closed state.

And when the user releases the pushhead 240, as shown in FIG. 8; The air piston 270 and the solution piston unit 280 are returned to the upper portion by the coil spring 290 elastic restoring force. At this time, the air cylinder 222 is filled with the outside air through the air passage 254 and the air hole 271, and the liquid contents in the container 100 in the solution cylinder 224 is also intake valve 120 Inflowing while opening.

That is, when the push head 240, the air piston 270, and the solution piston unit 280 are gradually raised by the restoring force of the coil spring 290, a vacuum pressure is applied to the air cylinder 222 and the solution cylinder 224. Therefore, the outside air is introduced into the air cylinder 222 through the air passage 254 and the air hole 271 is maintained in the initial state. Then, the inlet 223 is opened while the valve plate 233 of the intake valve 230 is slightly lifted up, and the liquid contents in the container 100 are introduced into the solution cylinder 224 through the intake tube 120 and the inlet 223. Is inhaled. At this time, the liquid contents are easily sucked while being radially dispersed through the gap G between the cylindrical body 231 of the suction valve 230 and the valve plate 233. In addition, the inside of the container 100 in which a small amount of the liquid content is discharged into the outside air by the volume through the negative pressure hole 221, the forming pump assembly 200 is maintained in the initial state. By repeating the push head 240 pressing operation, the liquid contents contained in the container 100 can be pumped and used in the form of bubbles.

As such, in the forming pump assembly 200 for a liquid container according to the present invention, the coil spring 290 is disposed to surround the solution piston unit 280 in the air cylinder 222, thereby pushing the push head 240 and air. The piston 270 and the solution piston unit 280 are not eccentric but operate correctly in the correct position. In addition, since the metal coil spring 290 is disposed inside the air cylinder 222 filled with air without contacting the liquid contents, there is no fear of discoloration or deterioration of the contents even when the product is used for a long time. In addition, the inlet valve 230 for opening and closing the inlet 223 also opens and closes the inlet 223 with its elastic restoring force, and is made of synthetic resin so that there is no chemical reaction and no discoloration even if it comes into contact with the liquid contents.

On the other hand, the foaming pump assembly 200 for a liquid container according to the present invention as shown in Figure 9 and 10; A stopper 300 may be mounted to prevent a push operation of the push head 240.

That is, the stopper 300 according to the present invention, as shown in Figure 9, the locking portion 310 is detachably coupled to the guide portion 241 outside of the push head 240 exposed to the upper portion of the cap 210. And a cover part 320 protruding from the tip of the locking part 310 to cover the tip of the ejection opening 243 of the push head 240. The locking portion 310 is formed in a substantially cylindrical shape so as to wrap the outer portion of the guide portion 241 while the rear portion is cut and elastically deformed. Accordingly, as shown in FIG. 10, when the locking part 310 is inserted outside the guide part 241 of the push head 240, the cover part 320 covers the tip of the ejection opening 243 of the push head 240. By being coupled so that, even if the user pushes the push head 240, the pressing operation is not made.

As a result, since the pushing operation of the push head 240 is not performed in the state in which the stopper 300 is mounted, even if an external force is applied to the push head 240 during product distribution, leakage of contents leaking may be prevented. It is possible to prevent foreign matter from flowing into the ejection opening 243. In addition, when the push head 240 is locked through the stopper 300, a child, for example, lacking attention cannot operate the push head 240 without permission.

Claims

A foaming pump assembly for a liquid container, which is mounted to a container in which liquid contents are contained, and mixes external air while pumping liquid contents to eject bubbles.

The forming pump assembly 200 for the liquid container;

A cap 210 mounted on the neck 110 of the container 100 by a screw coupling method and having a through hole 211 formed in the center of the upper surface thereof;

The air cylinder 222 is installed coaxially in the cap 210 and the external air is sucked and temporarily stored, and the negative pressure hole 221 is perforated on the upper wall and the lower side of the air cylinder 222 from below. A cylinder body 220 having a liquid cylinder 224 which extends and has a liquid contents stored therein temporarily for suction and has a suction port 223 provided at a bottom thereof for suction of the liquid contents;

The circular body 231 is inserted into the liquid cylinder 224 of the inlet 223 of the cylinder body 220 and coupled to the upper portion, and the plurality of connection bridges 232 having elastic restoring force inside the circular body 231. The valve plate 233 which selectively opens and closes the suction port 223 according to the internal pressure of the liquid cylinder 224 while maintaining a constant gap G with the inner wall of the circular body 231 is integrally provided through a synthetic resin. Valve 230;

The cylindrical guide portion 241 and the guide portion 241 of passing through the through hole 211 of the cap 210 up and down the upper space of the air cylinder 222 of the cylinder body 220, A push head 240 having a vertical discharge path 242 provided in the axial direction therein and a jet port 243 extending in a horizontal direction from an upper end of the vertical discharge path 242;

The cylindrical portion 251 is inserted into the lower end of the vertical discharge passage 242 of the push head 240 and the piston-coupled portion 252 is formed integrally with the lower edge of the cylindrical portion 251, Inlet 253 through which the liquid contents are introduced into the center of the bottom surface of the cylindrical portion 251 is drilled, and an aeration passage 254 for inflow of external air is formed at the edge of the piston-coupled portion 252. A piston shaft 250 which moves up and down together with the push head 240;

A filtering member 260 formed of a cylindrical shape in which a lower end is fitted into and coupled to an upper end of a cylindrical portion 251 of the piston-shaft 250 and provided with a filtering nets 261 and 262 on upper and lower surfaces thereof;

The central portion is coupled to the piston coupling portion 252 of the piston shaft 250 to selectively open and close the aeration passage 254 and the edge is in close contact with the inner wall of the air cylinder 222 of the cylinder body 220. When the push head 240 descends, the air cylinder 222 pressurizes the internal air to pump to the inlet 253 side of the piston shaft 250, and when the lifting movement moves the external air through the aeration passage 254. An air piston 270 in which an air hole 271 is perforated to flow into the air cylinder 222;

It is made of a hollow body having a solution flow path 282 secured in the longitudinal direction therein, the upper end is received in the center portion of the air piston 270 is coupled in communication with the center of the piston shaft 250 and the lower end of the cylinder body The solution is coupled to surround the piston-rod (281) and the communication hole (283) perforated in the lower end of the piston-rod (281) arranged to move up and down inside the solution cylinder 224 of (220) It is in close contact with the inner wall of the cylinder 224 to selectively open and close the communication hole (283) in accordance with the internal pressure of the solution cylinder 224, the liquid contents by applying pressure to the solution cylinder 224 when the push head 240 is lowered Solution piston unit 280 consisting of a piston (284) for pumping to the solution flow path (282) through the communication hole (283);

The top 291 is supported in contact with the outward flange portion 285 provided on the piston-rod 281 of the solution piston unit 280, the bottom 292 is the bottom of the air cylinder 222 of the cylinder body 220 A coil spring 290 seated and supported at 225 to restore the solution piston unit 280, the air piston 270, and the push head 240; Forming pump assembly for a liquid container comprising a.
The method of claim 1,

The upper end of the solution cylinder 224 of the cylinder body 220;

Forming pump assembly for a liquid container, characterized in that the cylindrical bush (226) is arranged to guide the shangdong of the solution piston unit (280) piston-rod (281).
The method of claim 1,

The forming pump assembly 200 for the liquid container;

The locking portion 310 detachably coupled to the outer portion of the guide portion 241 of the push head 240 exposed to the upper portion of the cap 210 so that the vertical movement of the push head 240 is not made, and the locking A stopper 300 provided to protrude at the tip of the part 310 and including a cover part 320 covering the tip of the jet port 242 of the push head 240; Forming pump assembly for a liquid container characterized in that it further comprises.