KR101322257B1 - Connector structure - Google Patents

Abstract

Provided is a connector structure capable of minimizing the amount of remaining liquid in a container. In the connector structure which is attached to the opening part 2 of the container 1, and is equipped with the siphon pipe 11 which discharges the liquid in the container 1 by the pressure of the gas introduce | transduced in the container 1, gas is introduce | transduced. The gas flow passage 12 and the liquid flow passage 13 for discharging the liquid are formed by the connection between the plug portion 40 and the socket portion 20, and the axis Cs of the siphon tube 11 and the container 1 are formed. The desired inclination angle θ is formed between the axes Cv of.

Connector structure

Description

CONNECTOR STRUCTURE

The present invention relates to a connector structure used for discharging a liquid from a container containing a liquid such as a chemical liquid, for example.

Generally, liquids, such as semiconductor high purity chemicals and general chemicals, are filled in containers, such as a glass bottle and a tank, at a production plant, and are shipped with the lid attached to the opening part formed in this container. In order to discharge the liquid accommodated in such a container, the siphon tube system which introduces gas, such as air, inside and discharges a liquid out of a container by the pressure is known.

In this system, after releasing the lid attached to the opening of the container, a plug having a siphon tube and a gas flow path serving as a liquid flow path is attached to the opening of the container. Then, by connecting the socket for connecting the tube for discharging the liquid and the tube for introducing the gas to the plug, the plug and the socket attached to the opening of the container are used for discharging the liquid. A negative flow path for introducing a flow path and a gas is formed.

In the above-described socket and plug, a connecting device (connector structure) capable of connecting the socket to the plug by one touch is known.

Moreover, an annular flow path is formed between them in the state which the socket and the plug couple | engaged, and it is comprised so that the flow path of a socket side and the flow path of a plug side may communicate at arbitrary twisted angles through this annular flow path, for example A connecting device is disclosed which realizes an improvement in work efficiency by easily connecting different types of fluid flow paths in an opening of a container, such as a liquid and a gas. (See Patent Document 1, for example.)

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-192099

However, in the above-described conventional connector structure, since the siphon tube inserted from the opening portion substantially coincides with the axis of the vessel, a gap for discharging the liquid is formed between the lower end portion of the siphon tube and the bottom of the vessel. When the remaining amount of liquid decreases and the lower end of the siphon tube is exposed, it becomes difficult to discharge the liquid. For this reason, it becomes impossible to discharge | emit, and the amount of residual liquid which remains over the substantially flat whole bottom area | region in a container generate | occur | produces, and there exists a problem that the liquid in a container cannot be used without waste. In particular, when the liquid to be handled is, for example, an expensive drug such as a resist or the like, it is desired that the liquid remaining in the container be kept to a minimum and effectively used in view of its high impact on the cost.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a connector structure capable of minimizing the amount of residual liquid in a container.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention employ | adopted the following means.

That is, the connector structure in this invention is attached to the opening part of a container, In the connector structure provided with the siphon pipe for discharging the liquid in a container by the pressure of the gas introduced in the container,

The flow path for introducing the gas and the flow path for discharging the liquid are formed by the connection between the plug portion and the socket portion, and a desired inclination angle is formed between the axis of the siphon tube and the axis of the vessel. will be.

According to such a connector structure, a flow path for introducing gas and a flow path for discharging liquid are formed by the connection between the plug portion and the socket portion, and a desired inclination angle is formed between the axis of the siphon tube and the axis of the container. The siphon tube can be inserted approximately vertically into the container in the inclined state, and the liquid can be discharged in a state where the liquid is collected at the bottom of the container.

In the above connector structure, the inclination angle is an angle between the axis of the siphon tube that is made vertical and the axis of the vessel that is inclined so that the lower end of the siphon tube is positioned near the lowest bottom in the container. Preferably, the liquid in the container can be collected near the bottom of the lowest bottom in the inclined container so that approximately all of the liquid can be discharged.

In the above connector structure, it is preferable to include a height adjusting means for adjusting the fixed position of the siphon tube in the vertical direction, whereby the siphon tube is inserted in response to the individual difference of each container. By adjusting the amount (insertion height), the lower end of the siphon tube can be fixed so as to be closest to the lowest surface in the container.

In the connector structure described above, the socket portion is preferably fixed to the opening of the container by opening the concave portion into which the plug portion is inserted upward. We can accept from wealth.

In this case, an intermediate connector may be arranged between the socket portion and the plug portion, and the intermediate connector may be connected to the socket portion by opening up a recess into which the plug portion is inserted.

According to the present invention described above, since the siphon tube can be inserted into the container in the inclined state substantially vertically to discharge the liquid, the amount of remaining liquid remaining in the container can be minimized by discharging the liquid in the container. It can be used effectively without waste. In particular, when the liquid to be handled is an expensive medicine or the like, the manufacturing cost can be reduced by reducing the remaining amount.

1 is a cross-sectional view showing a first embodiment of a connector structure in the present invention.

Fig. 2 is an enlarged view of a main portion showing the height adjusting means provided in the connector structure of Fig. 1.

3 is an enlarged sectional view of a main portion showing the gas path around the seal nut in the connector structure of FIG. 1;

4 is a cross-sectional view showing a configuration example of a quick connector used in the first embodiment.

Fig. 5 is a sectional view showing a second embodiment of the connector structure in the present invention.

Fig. 6A is a plan view showing a configuration example of a quick connector used in the second embodiment, with a part as a cross section.

Fig. 6B is a cross sectional view showing a configuration example of a quick connector used in the second embodiment, showing the internal structure of the plug portion.

Fig. 7 is a sectional view showing a third embodiment of the connector structure in the present invention.

<Code description>

One … Vessel

2 … Opening

2a. Top side

2b. External thread

10, 10A, 10B... connector

11. Siphon tube

12... Gas flow path

13. Liquid flow path

20, 20A... Socket

21, 21A, 71... Recess

30. Bottle cap

40, 40A, 40B... Plug section

43. Height adjustment recess (height adjustment means)

50…. Adjust nut

60, 60A, 60B. Quick connectors

70... Middle connector

[theta]. Angle of inclination

Cs, Cv... Axis

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of the connector structure in this invention is described along drawing.

In the first embodiment shown in Figs. 1 to 4, a container (for example, a glass bottle or a resin tank) 1 for filling liquids such as chemicals is an opening 2 for filling and discharging provided at the upper portion. Equipped with. In the case where the liquid is discharged from the inside of the container 1, for example, as shown in FIG. 1, the siphon tube 11 of the connector 10 provided in the opening 2 is located near the bottom surface of the container 1. The siphon tube method which is inserted into and used is adopted. The siphon tube system presses the surface of the liquid by gas pressure such as air or gas introduced into the vessel 1 and discharges the liquid in the vessel 1 from the opening provided in the lower end of the siphon tube 11. Consists of.

The connector 10 is provided with the socket part 20 and the plug part 40 in addition to the siphon pipe 11 mentioned above. And the socket part 20 provided in the opening part 2 of the container 1 and the plug part 40 which supported the siphon pipe 11 are integrally connected, and the gas in the container 1 is connected. A gas flow passage 12 for introducing the gas and a liquid flow passage 13 for discharging the liquid from the inside of the container 1 are formed.

The socket part 20 is a substantially cylindrical member which is detachably attached to the opening part 2 of the container 1, and since the upper end surface and the lower end surface are in parallel with each other, the inclination angle θ which will be described later It becomes the shape which missed by.

In the upper end surface of the socket part 20, the recessed part 21 for connecting the plug part 40 is formed in the vicinity of the center of a shaft. The said recessed part 21 is a substantially cylindrical space formed along the axis line Cs orthogonal to an upper end surface, and in the state which provided the socket part 20 in the opening part 2 of the container 1, the axis line The inclination angle θ is deflected from the axis Cv of the container 1. In the socket portion 20, a through hole 22 having a circular cross section penetrating along the above-described axis line Cs is formed from the center of the bottom face of the recess portion 21 to the bottom face side. Since the through hole 22 serves as a passage for passing the siphon tube 11 into the container 1, the above-described axis Cs is common to the recess 21 and the siphon tube 11. Become an axis.

In addition, the plug portion 40 is formed in the socket portion 20 by the insertion convex portion 23 formed so as to protrude to the lower end surface corresponding to the cross-sectional shape of the opening portion 2 and the adjust nut 50 described later. In order to connect and fix, the outer thread part 24 formed in the upper outer peripheral surface is provided.

The insertion protrusion 23 is a protruding portion of a circular cross section inserted into the opening 2 of the container 1. The insertion convex portion 23 is inclined at an angle θ from the axis Cs and at a diameter smaller than the outer diameter of the main body of the socket portion 20. As a result, the step surface 25 which faces toward the outer side of the horizontal direction is formed in the upper end part of the insertion convex part 23. As shown in FIG. In addition, the code | symbol 26 in the figure has shown the flange part which protruded toward the outer side from the outer peripheral surface of the socket part 20, and 27 is the packing part provided in the vicinity of the upper end part of the insertion convex part 23. As shown in FIG.

The plug portion 40 is a member that is bent in a substantially L-shape in which independent gas flow passages 12 and liquid flow passages 13 are formed, respectively. The plug portion 40, one end of the siphon tube 11 is connected to the socket portion 20, the other end is connected to the quick connector 60 is removable.

The siphon pipe 11 is sealed and supported at one end side (socket 20 side) of the liquid flow passage 13 by sealing the connecting portions with each other using the ring 14 and the seal nut 15. That is, in this embodiment, the general connection structure of tubes, such as the copper pipe which uses the resin tube for the siphon pipe 11 and uses the ring 14 and the seal nut 15, is employ | adopted.

The other end of the plug portion 40 is, for example, a convex portion 41 fitted into the recess 61 of the quick connector 60 shown in FIG. 4. The convex portion 41 is provided with a fixed concave portion 42 for maintaining the engaged state of the quick connector 60.

The plug portion 40 is fixed to the socket portion 20 using the adjust nut 50. The adjust nut 50 includes an inner thread portion 51 for screwing into an outer thread portion 24 of the socket portion 20 penetrating the center portion, and a recess for adjusting the height of the small diameter portion formed in the plug portion 40 ( 43 is provided with a flange-shaped fixing portion 52 fixed thereto. The fixing portion 52 functions as a height adjusting means described later in cooperation with the adjustment recess 43 described above. Reference numeral 53 in the drawing denotes a ferrule that functions as a seal member.

In this way, the socket part 20 integrated with the plug part 40 is equipped with the bottle cap 30 for screwing the connector 10 to the container 1 in the outer side of the flange part 26. As shown in FIG. The bottle cap 30 is a substantially cylindrical member, and at the lower end side of the hollow inner surface 31, an inner thread portion 31a is formed to screw with the outer thread 2b of the container 1. Moreover, the upper end side of the hollow inner surface 31 becomes a space which can accommodate the socket part 20 and the flange part 26, and the inside diameter is set to the value larger than the internal thread part 31a.

The socket portion 20 integrated with the siphon tube 11 and the plug portion 40 is in a state where the siphon tube 11 penetrates the hollow inner surface 31 of the bottle cap 30. The cap ring 32 covered is fixed with a plurality of cap screws 33 so as not to be pulled out. As a result, the socket part 20 is the hollow inner surface 31 of the bottle cap 30 in the state which the flange part 26 slidable between the cap ring 32 in the upper part of the internal thread part 31a. It is housed in the space inside and integrated).

For example, as shown in FIG. 4, the quick connector 60 is inserted into the fixed recess 42 by the convex portion 41 and the recessed portion 61 of the plug portion 40 in a predetermined engagement state. A fixing member 62 for preventing the movement in the axial direction is provided. Since the fixing member 62 is provided with a coil spring 63 which is held upward in a fixed state, the fixing member 62 is pushed down to compress the coil spring 63 against this force, so that the fixing member 62 is lowered. By moving to the fixed state with the fixed recess 42 can be released. As a result, the quick connector 60 in the engaged state can be released from the plug portion 40 and separated from each other. In addition, when the quick connector 60 is coupled to the plug portion 40, the inclined surface is formed at the tip of the fixing member 62 so that the fixing member 62 is pushed down with the insertion to automatically fix the state. do.

The quick connector 60 mentioned above is provided with the gas supply connection port 64 which introduces a pressurizing gas from an external supply source, and guides it to the gas flow path 12. In addition, a pipe 3 is connected to the quick connector 60 by a nut 4 to guide the liquid discharged from the inside of the container 1 to the use place. In addition, the reference numeral 66,67 in the figure is a sealing O-ring provided in order to separate between the gas flow path 12 and the liquid flow path 13.

The connector 10 having the above-described configuration will be described together with the operation of attaching and detaching the container 1 and discharging the liquid.

First, the lid (not shown) provided in the opening part 2 of the container 1 is removed, and the connector 10 is installed. At this time, since the socket 10 and the plug 40 are integrated by the adjust nut 50, the connector 10 inserts the siphon tube 11 into the inside of the container 1 so that the bottle cap ( The inner thread part 31a of 30 is screwed to the outer thread part 2b of the opening part 2, and is fixed. As a result, the insertion convex part 23 of the socket part 20 is inserted and positioned in the opening part 2, and the packing part 27 is pressed against the upper end surface 2a of the opening part 2, and the container 1 is carried out. Seal the inside of it.

The connector 10 provided in this way has the axis Cs of the siphon tube 11 deviated by the inclination angle θ from the axis Cv of the container 1, so that the siphon tube 11 is substantially vertical. The lower surface of the container 1 is inclined. Therefore, after keeping the container 1 inclined from the vertical by the inclination angle θ by using a suitable fixing means (not shown), the tightening of the adjust nut 50 is released to reduce the siphon tube 11. ), The lower end of the siphon tube 11 is positioned near the lowest bottom position of the inclined container 1 by performing the height adjustment within the range of the adjustment dimension L (see FIG. 2). It can be opened. That is, insertion of the siphon pipe 11 is carried out by sliding the plug part 40 integrated with the siphon pipe 11 up and down with respect to the position of the bottom face which differs with each individual difference of the container 1 up and down. It is a height adjustment means that can be optimized by adjusting the amount.

In addition, after adjusting the insertion amount of the siphon tube 11, when the adjust nut 50 is fastened to the socket part 20 and the plug part 40 is fixed, the ferrule 53 is compressed and exhibits a sealing function. do.

Next, with respect to the connector 10 provided in the opening part 2 of the container 1, the quick connector 60 is connected in a horizontal direction. Such a structure capable of connecting in the horizontal direction is effective when there is a limit in the upper space of the container 1. By the connection of the quick connector 60, since the preparation for discharging the liquid in the container 1 is completed, the valve of the gas supply source (not shown) is opened to start the gas supply.

When the gas supply is started, the gas for pressurizing the surface of the liquid is introduced into the gas flow passage 12 of the quick connector 60 from the gas supply connection port 64. This gas passes through the gas flow passage 12 in the plug portion 40 connected to the quick connector 60 and, for example, as shown in FIG. 3, a recess passage formed in the upper end surface of the seal nut 15. Induced by (16). The recess passage 16 is formed in the entire outer circumference of the siphon tube 11 plastically deformed by the connection using the seal nut 15.

In addition, at a suitable place of the seal nut 15, at least one through hole 17 penetrating in the up and down directions is formed. Therefore, the gas introduced into the recess passage 16 flows through the through hole 17 and flows toward the lower surface side of the seal nut 15, as indicated by the arrow g in the figure. The gas is formed between the lower surface of the seal nut 15 and the recess 21 of the socket part 20, and the space formed between the siphon tube 11 and the through hole 22. Using as a gas flow path, it leads to the space formed on the surface of the liquid in the container 1.

In this way, when the pressure in the container 1 rises, the liquid to which the surface of the liquid was pressed is pushed up from the lower end of the siphon tube 11 to the inside of the siphon tube, and flows upward as shown by the white arrow in the figure, It flows into the liquid passage 13 of the plug portion 40. This liquid is again passed through the liquid passage 13 and the pipe 3 of the quick connector 60 and supplied to the desired use place.

In the operation of discharging the liquid, when the remaining amount of liquid in the container 1 decreases, the container 1 is kept inclined by the angle θ so that the liquid collects at the lowest position on the bottom of the container. And since the lower end part of the siphon tube 11 is opened in the vicinity of the lowest bottom position in the container 1, the siphon tube system will not be used until the surface of a liquid will go down to the position lower than the opening of the siphon tube 11. The liquid can be easily and reliably discharged by this.

That is, by using the connector 10 mentioned above, the siphon tube system which discharges the liquid in the container 1 through the siphon tube 11 WHEREIN: The container 1 is kept in the inclined state, and is substantially vertical The siphon tube 11 can be inserted in the direction, and the liquid can be discharged by collecting the liquid near the lowest bottom position of the inclined container, so that the remaining amount of the liquid in the container 1 can be minimized.

&Lt; Second Embodiment >

Next, a second embodiment of the present invention will be described with reference to FIGS. 5, 6A, and 6B. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

In the connector 10A of this embodiment, the substantially L-shaped plug portion 40A is inserted from above and connected to the recessed portion 21A of the socket portion 20A opening upward.

In this case, the siphon tube 11 adopts the same configuration as that of the first embodiment provided in the plug portion 40 using the ring 14 and the seal nut 15, and directly with respect to the socket portion 20A. It is installed. In this case, the axis Cs deviates from the axis Cv of the container 1 by the inclination angle θ as in the first embodiment described above.

The concave portion 21A opening to the upper portion of the socket portion 20A has a form in which the convex portion 41A of the plug portion 40A is inserted into and engaged with each other, and the inner circumferential surface separates the gas flow passage from the liquid flow passage. O-rings 44 and 45 are provided as seal members for the purpose of sealing. Moreover, the gas flow path 12 which communicates between the recessed part 21A and the recessed passage 16 formed in the upper end surface of the seal nut 15 is formed in the said socket part 20A. In addition, the flow of the gas guide | induced from the recessed passage 16 into the container 1 becomes the same path | route as 1st Embodiment mentioned above (refer FIG. 3).

On the other hand, the plug portion 40A has a gas flow passage 12 and a liquid flow passage 13 formed therein, and a pipe 3 for discharging liquid is provided on the other end side of the convex portion 41A in the horizontal direction. Connected by 4). The plug portion 40A is provided with a pair of gas supply connecting ports 46 for introducing a pressurized gas from an external supply source to guide the gas flow passage 12 to both left and right sides. Since the gas supply connection port 46 communicates internally, one of the pipes connected to the supply source can be selected and used easily, and the other end can be closed by a man plug or the like. The plug portion 40A configured as described above functions as a quick connector that is substantially the same as the first embodiment described above. In the following description, the plug portion 40A including the pipe 3 is collectively referred to as a quick connector 60A. Let's call it.

Hereinafter, the connector 10A having the above-described configuration will be described with the operation of attaching and detaching and discharging the container 1.

In this case, since the socket part 20A which provided the siphon pipe 11 is integrated with the bottle cap 30 by the cap ring 32, the siphon pipe 11 in the container 1 from the opening 2 is carried out. ), And then, the bottle cap 30 is screwed into the outer thread 2b of the opening 2 to fix it. Then, in order to connect the quick connector 60A to the socket portion 20A, the convex portion 41A of the plug portion 40A is inserted into the recessed portion 21A and engaged.

As a result, since the gas flow passage 12 and the liquid flow passage 13 passing through the socket portion 20A from the plug portion 40A are formed, the liquid inside is supplied to the vessel 1 by supplying gas into the vessel 1. Extruded into the liquid flow path 13 through 11.

After the liquid discharge operation is completed, for example, the quick connector 60A is removed for the purpose of exchanging the container 1 or the like, the liquid remaining in the liquid flow passage 13 is discharged from the convex portion 41A. There is a possibility of dripping from the lower end. However, since the plug portion 40A is pulled upward from the socket portion 20A and separated, the falling liquid can be received in the recessed portion 21A, so that the plug portion 40A can be prevented from flowing out.

&Lt; Third Embodiment >

Subsequently, a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same member as 1st and 2nd embodiment mentioned above, and the detailed description is abbreviate | omitted.

In the connector 10B of this embodiment, the intermediate connector 70 which supported the siphon pipe 11 is provided between the socket part 20 and the plug part 40B of the quick connector 60B. The intermediate connector 70 includes a gas flow passage 12 for introducing gas into the container 1 and a liquid flow passage 13 for discharging liquid from the inside of the container 1, and further includes a plug portion ( The concave portion 71 for inserting and connecting 40B is opened upward, and the lower end side is inserted into the socket portion 20 so as to be connected.

Specifically, the intermediate connector 70 has the same configuration as the plug portion 40 shown in FIG. 1 at the lower end portion connected to the socket portion 20. On the other hand, the upper end side of the intermediate connector 70 into which the plug portion 40B of the quick connector 60B is inserted is configured such that the concave portion 71 opens upward, similar to the socket portion 20A shown in FIG. 5. have.

In addition, in the intermediate connector 70, in order to keep the plug portion 40B coupled to the recess portion 71 in the vicinity of the recess portion 71, the fixing recess of the plug portion 40B in a predetermined engagement state. The fixing member 72 inserted into the part 42B is arrange | positioned as needed. The fixing member 72 has a configuration substantially the same as that of the fixing member 62 shown in FIG. 4, and is held so that the coil spring 73 is added to the center direction of the shaft. In addition, 74 and 75 in the figure are O-rings for separating between the gas flow path and the liquid flow path.

Hereinafter, the attachment / detachment operation to the container 1 and the discharge operation with respect to the connector 10B of the structure mentioned above are demonstrated with an effect.

First, the lid (not shown) provided in the opening part 2 of the container 1 is removed, and the connector 10B is attached. At this time, since the connector 10B is in a state in which the socket portion 20 and the intermediate connector 70 are integrated by the adjust nut 50, the siphon tube 11 is inserted into the container 1 so that the bottle cap is removed. The inner thread part 31a of the 30 is screwed to the outer thread part 2b of the opening part 2, and is fixed. As a result, the insertion convex part 23 of the socket part 20 is inserted and positioned in the opening part 2, and the packing part 27 is pressed by the upper end surface 2a of the opening part 2, and the container 1 is carried out. Seal the inside of it.

The connector 10B provided in this manner has the axis Cs of the siphon tube 11 deviated by the inclination angle θ from the axis Cv of the container 1, so that the siphon tube 11 is substantially vertical. The lower surface of the container 1 is inclined. Then, when the container 1 is kept inclined by the inclination angle θ from vertical, the tightening of the adjust nut 50 is released to adjust the height of the siphon tube 11, the inclined container 1 The lower end of the siphon tube 11 can be positioned and opened in the vicinity of the lowest bottom position. In addition, after adjusting the insertion amount of the siphon tube 11, when the adjust nut 50 is fastened to the socket part 20 and the intermediate connector 70 is fixed, the ferrule 53 is compressed and exhibits a sealing function. do.

Next, the quick connector 60B is connected from above with respect to the connector 10B provided in the opening part 2 of the container 1. At this time, the fixing member 72 is inserted into the fixing recess 42B of the plug portion 40B, whereby the connection of the quick connector 60B is securely maintained and the preparation for discharging the liquid in the container 1 is completed. do.

As a result, the gas flow passage 12 and the liquid flow passage 13 passing through the socket portion 20 by the intermediate connector 70 from the plug portion 40B of the quick connector 60B are formed. By supplying gas into the container 1 through the same path as in the embodiment, the liquid inside the container passes through the siphon tube 11 and is extruded into the liquid flow path 13.

After the liquid discharge operation is completed, for example, the quick connector 60B is disconnected for the purpose of replacing the container 1, the liquid remaining in the liquid flow path 13 of the quick connector 60B is discharged. There is a possibility of dropping from the lower end of the plug portion 40B. However, since the plug portion 40B is pulled upward from the recess portion 71 of the intermediate connector 70 and separated, the plug portion 40B can receive the dropped liquid into the recess portion 71 to prevent leakage to the outside. .

As described above, according to the connector structure of the present invention, since the siphon tube 11 can be inserted into the container 1 in the inclined state substantially vertically, the liquid can be discharged, so that the discharge is impossible and remains in the container 1. The amount of remaining liquid can be minimized, and the liquid in the container can be effectively used without waste. In particular, in case of expensive chemicals and the like, the manufacturing cost can be reduced by reducing the amount of remaining liquid.

In addition, this invention is not limited to embodiment mentioned above, A suitable change is possible within the range which does not deviate from the summary of this invention.

Claims (5)

A connector structure mounted to an opening of a container, and having a siphon tube for discharging liquid in the container at a pressure of a gas introduced into the container, A flow path for introducing the gas and a flow path for discharging the liquid are formed by the connection between the plug portion and the socket portion, and form a desired inclination angle between the axis of the siphon tube and the axis of the vessel, The socket portion is fixed to the opening of the container by opening upwardly a recess for inserting the plug portion, An intermediate connector is disposed between the socket portion and the plug portion, and the intermediate connector is connected to the socket portion by opening up a recess for inserting the plug portion upward. The method of claim 1, And the inclination angle is an angle between the axis of the siphon pipe that is vertical and the axis of the container which is inclined so that the lower end of the siphon pipe is positioned near the lowest bottom in the container. The method according to claim 1 or 2, And a height adjusting means for adjusting the fixed position of the siphon tube in the vertical direction. delete delete

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