JP3121929U - Dispensing head - Google Patents

Abstract

A dispense head is provided with a function of extracting a beverage staying in a beverage supply path between a dispense head and a cooling device by a simple operation when the store is closed.
A branch pipe communicates with a pipe wall of an outer pipe, a gas pressure is applied between the outer pipe and the inner pipe through the branch pipe, and the gas pressure is supplied to a beverage container through a small diameter portion formed in the inner pipe. In the dispensing head having a structure in which the beverage is extracted from the beverage container through the siphon tube by this gas pressure and poured into the container, the branch pipe is provided with an actuator that is displaced in accordance with the irregular shape of the inner tube, and the actuator has a small diameter formed on the inner tube. The actuator is made to function as a minute amount opening means in a state of facing the portion, and the beverage staying between the dispensing head and the cooling device is discharged by the minute amount of gas.
[Selection] Figure 1

Description

  This device is provided at the beer spout of a container containing beer, for example, and maintains a state in which the beer is supplied to the cooling device during the store operation and has a function of switching to the non-delivery state when the store is closed. About.

For beer or carbonated beverages, it is necessary to apply a gas pressure in the container to suppress release of gaseous components from the beverage. For this reason, a dispensing head is provided at the beverage outlet of the beverage container, a gas pressure is applied to the beverage container from the outside via the dispensing head, the beverage is poured out of the container by the gas pressure, and the dispensed beverage is dispensed with a dispenser. A form in which the beverage is fed to a so-called cooling device and the beverage cooled by the cooling device is poured into a cup or the like is sold. In this way, the state in which the gas pressure is constantly applied to the beverage container from the outside is maintained.
This is shown in FIG. In the figure, 10 is a gas cylinder, 20 is a beverage container, 30 is a dispensing head attached to the mouth of the beverage container 20, and 40 is a cooling device. The gas cylinder 10 is generally filled with carbon dioxide gas. The carbon dioxide gas is applied to the dispense head 30 through the pressure reducing valve 11, and the carbon dioxide gas is applied to the beverage container 20 by the operation of the dispense head 30 and the non-application state. Be controlled.

The dispensing head 30 is connected to the upper end of the siphon tube 21 attached to the beverage container 20. A control valve for switching between a state in which the gas pressure is applied toward the beverage container 20 and a state in which the gas pressure is not applied is provided. The control valve is operated by a lever and maintains a state in which gas pressure is applied from the gas cylinder 10 to the beverage container 20 during the opening of the store, and whenever the dispensing cock 41 provided in the cooling device 40 is opened, the beverage container 20 is opened. Then, the beverage is pushed up by gas pressure and poured into a container 42 such as a mug.
During the store operation, the dispensing head 30 is always kept open, and the gas pressure in the beverage container 20 is maintained at a constant value.

  While the store is open, the dispense head 30 is kept open as described above and the gas pressure from the gas cylinder 10 is applied to the beverage container 20, but when the store is closed, the dispense head 30 is closed. The gas pressure from the gas cylinder 10 is cut off. In this state, the inside of the beverage container 20 is maintained at the atmospheric pressure given from the gas cylinder 10 by the valve of the dispense head 30 and the siphon tube opening / closing valve provided at the upper end of the siphon tube 21. When opening the store the next day, by operating the valve of the dispensing head 30 again, the gas pressure is applied from the gas cylinder 10 to the beverage container 20 to return to the state where the beverage can be poured out.

  Here, the structure of the conventionally used dispense head 30 and the siphon tube connected to the dispense head 30 will be briefly described. As shown in FIG. 6, the dispensing head 30 has a double structure including an outer tube 31 and an inner tube 32. O-rings 33A and 33B are mounted between the inner tube 32 and the outer tube 31, and a region sandwiched between the O-rings 33A and 33B is kept airtight. A small-diameter portion 32 </ b> A is formed on the peripheral surface of the inner tube 32 at this airtight portion. A branch pipe 31A communicating with the outside is provided in the outer pipe 31 so as to face the small diameter portion 32A, and a gas pressure is applied from the gas cylinder 10 to the branch pipe 31A.

In a state where the small diameter portion 32A is disposed at a position surrounded by the O-rings 33A and 33B, the gas applied through the branch pipe 31A is maintained in a state where it does not leak into any of them. On the other hand, when the inner tube 32 moves downward by the operation of the lever 34 and the small diameter portion 32A moves below the lower O-ring 33B, the gas applied to the branch tube 31A is separated from the outer tube 31. It is ejected downward through a gap between the inner tube 32 and applied to the beverage container 20. Accordingly, the pair of O-rings 33A and 33B and the small diameter portion 32A constitute a beverage dispensing control valve BEN1.
Next, the structure of the siphon tube 21 will be described. As shown in FIG. 7, the siphon tube 21 includes a first valve 22 and a second valve 23. The first valve 22 and the second valve 23 are always biased upward by springs 22A and 23A, and are closed. The state is maintained (see FIG. 7A).

The first valve 22 is engaged with the lower end of the inner tube 32 provided in the dispensing head 30 shown in FIG. 6, and when the inner tube 32 moves downward by the operation of the lever 34, the first valve 22 moves downward from the inner tube 32. The first valve 22 is moved downward against the biasing force of the spring 22A. By this movement, a first gap 24 (see FIG. 7B) is formed between the first valve 22 and the second valve 23, and a flow path for beverages is formed by the first gap 24.
On the other hand, when the downward movement of the inner pipe 32 further proceeds, the first rubber packing 35 (see FIG. 6) covering the outer side of the inner pipe 32 is engaged with the step portion 23B (see FIG. 7B) of the second valve 23. Then, the beverage flow path and the gas flow path are blocked.

  When the movement of the inner pipe 32 further proceeds, the second valve 23 starts to move downward against the biasing force of the spring 23 </ b> A, and a second gap 26 is formed between the second valve 23 and the holder 25 ( (See FIG. 7C). The second gap 26 acts as a gas flow path, and the gas ejected from the dispensing head 30 is applied to the inside of the beverage container 20 through the hole 27 (FIG. 7C). The dispense head 30 is provided with a second rubber packing 36 at the lower end of the outer tube 31, and the second rubber packing 36 is in pressure contact with the step portion 25 </ b> A of the holder 25 of the siphon tube 21, so Shield between. When the gas pressure ejected from the dispensing head 30 is applied to the inside of the beverage container 20, the beverage in the beverage container 20 rises through the siphon tube 21, squirts through the first gap 24, and the notch 32 </ b> B shown in FIG. 6. Is injected into the hollow portion of the inner pipe 32, rises upward in the hollow portion, and is carried to the cooling device 40 through the hose 37 (FIG. 6).

  The holder 25 and the dispense head 30 are engaged by a bayonet mechanism constituted by a claw 25B (FIG. 7B) provided on the inner periphery of the holder 25 and a claw 31C (see FIG. 6) provided on the outer periphery of the outer tube 31 of the dispense head 30. Stopped. The upper end portion of the inner pipe 32 is used as a beverage feeding port, and a hose 37 leading to the cooling device 40 is connected thereto. As is clear from the above description, the hollow portion of the inner tube 32 acts as a beverage pouring path, and the gap between the outer tube 31 and the inner tube 32 acts as a gas pressure application passage. The small-diameter portion 32A formed in 32 and the O-ring 33B act as a beverage outlet control valve BEN1 that opens and closes the gas pressure application passage, and the first valve 22 and the second valve 23 provided on the upper part of the siphon pipe 21 are Acts as siphon tube opening / closing valve BEN2.

As described above, in this type of beverage dispensing device, the beverage staying in the pipe line from the dispensing head 30 through the cooling device 40 to the dispensing cock 41 is left in a state where no gas pressure is applied during closing. Although there is no portion that comes into contact with air in the pipe line between the dispensing head 30 and the dispensing cock 41, the pressure of the beverage staying in this portion is left low, and the carbonic acid or gas component contained in the beverage is vaporized. It will be in a so-called unintentional state. For this reason, at the beginning of the store opening, the beverage staying in the cooling device 40 must be discarded, resulting in waste.
In addition, in a store where summer or heating is good, there is a risk that the beverage staying during closing will be altered. For this reason, as a regular handling method, the dispense head 30 is replaced with a washing barrel containing washing water when the store is closed, and the washing water is poured out from the washing barrel using gas pressure, and the washing water is cooled by the cooling device 40 through the hose 37. The beverage remaining in the hose 37 and the pipeline in the cooling device 40 is discharged with washing water, and the operation of washing the pipeline with washing water is required.

The pipe for cooling in the cooling device 40 is relatively long, and therefore, the amount of beverage that is wasted is large, which is about one full of a mug. When this amount of beverage is discarded at a large number of restaurants, the total amount becomes large and wasteful.
In order to eliminate the inconveniences as described above, the present applicant has proposed a dispensing head disclosed in Japanese Patent Application Laid-Open No. H10-228707. As shown in FIG. 8, the previously proposed dispense head includes a notch that functions as a minute amount opening means 32 </ b> C in the vicinity of the inner diameter portion 32 </ b> A of the inner tube 32. By providing the minute opening means 32C, the gas supplied from the branch pipe 31A immediately before returning the dispensing head 30 to the closed position (in this state, the valve on the siphon pipe side is already closed) is used. The flow is reduced to a very small flow rate, and a very small amount of gas is supplied to the connecting portion between the outer tube 31 and the siphon tube 21, and the beverage from the dispense head 30 to the beverage dispensing cock 41 of the cooling device 40 by the small amount of gas. The beverage staying in the passage can be discharged from the beverage dispensing cock 41.

Therefore, by using the previously proposed dispense head, it is possible to draw out the beverage stagnant in the pipe line between the dispense head 30 and the beverage dispensing cock 41 when the store is closed, and the drawn beverage is useless because it is fresh. There is an advantage that it can be used effectively without the need for disposal.
Utility Model Registration No. 311844

Since the dispense head proposed earlier has the minute amount opening means 32C disposed in the vicinity of the beverage dispensing valve BEN1 for controlling whether or not to supply the gas pressure to the siphon tube 21, there is a possibility that the beverage may flow backward in this portion. is there. When the beverage comes into contact with the minute amount opening means 32C, the components contained in the beverage gradually accumulate in the cutout portions constituting the minute amount opening means 32C, which causes a disadvantage that clogging occurs.
The purpose of this device is to eliminate the disadvantages of the previously proposed dispense head and to propose a dispense head that operates stably over a long period of time.

In this device, a minute amount opening means is installed in a branch pipe with a low rate of contact with beverage as much as possible in the dispensing head, and a check valve is provided between the minute amount opening means and the outer pipe. Propose structure.
Specifically, the dispensing head according to the present invention includes a branch pipe that leads from the outside into the pipe, and an outer pipe that is connected to a siphon pipe that is supported by being suspended from the beverage outlet of the beverage container toward the bottom of the beverage container. And an inner tube having a small diameter portion opposed to the branching position of the branch pipe provided in the outer pipe, and supported in the pipe direction of the outer pipe, and provided in the outer pipe. The inner tube is displaced in a direction away from the connection portion between the outer tube and the siphon tube, and is configured by a pair of O-rings provided on the inner wall of the outer tube on one side and the other side across the position of the branch tube formed. Then, a pair of O-rings contact other than the small-diameter portion provided in the inner tube, and a space between the pair of O-rings including the small-diameter portion is maintained airtight, and the inner tube is a connection portion between the outer tube and the siphon tube. A pair of O-rings with displacement in the direction approaching The O-ring on the side close to the siphon tube is opposed to the small-diameter portion, the gas pressure supplied from the branch tube is applied to the beverage container, and the beverage is extracted from the beverage container through the siphon tube by applying this gas pressure. When the tube is displaced in a direction away from the siphon tube, the o-ring on the side close to the siphon tube comes into contact with a position other than the small-diameter portion, cuts off the application of gas pressure, and controls the beverage extraction control valve. In the pipe of the branch pipe, it is supported so as to be movable in the direction of the branch pipe, protrudes in the pipe axis direction of the outer pipe by the biasing force of the spring, the tip is elastically pressed against the outer peripheral surface of the inner pipe, and the tip is Actuator whose position in the branch pipe is displaced by contact between the small diameter part and other than the small diameter part, and a minute opening that suppresses the amount of gas supplied from the branch pipe to the outer pipe with the tip of this actuator pressed against the small diameter part Means Characterized in that it obtain.

  The present invention further includes a branch pipe communicating from the outside into the pipe, and an outer pipe connected to a siphon pipe whose one end is suspended and supported from the beverage outlet of the beverage container toward the bottom of the beverage container, In the pipe, the inner pipe having a small-diameter portion opposed to the branching position of the branch pipe provided in the outer pipe and supported by the axial direction of the outer pipe in the axial direction, and the position of the branch pipe provided in the outer pipe A pair of O-rings are provided on the inner wall of the outer tube on one side and the other side, and the pair of O-rings is inner when the inner tube is displaced away from the connecting portion between the outer tube and the siphon tube. A state in which the space between the pair of O-rings including the small-diameter portion is kept airtight and the inner tube is displaced in a direction approaching the connecting portion between the outer tube and the siphon tube. Auri on the side near the siphon tube in the pair of O-rings The gas pressure supplied from the branch pipe is applied to the beverage container, the beverage is extracted from the beverage container through the siphon tube, and the inner tube is displaced in a direction away from the siphon tube. Then, the O-ring on the side close to the siphon tube comes into contact with a position other than the small-diameter portion, cuts off the application of gas pressure, and controls the beverage extraction control valve that controls beverage extraction, It is supported so as to be able to thrust in the tube axis direction of the tube, protrudes in the tube axis direction of the outer tube by the biasing force of the spring, the tip elastically presses against the outer peripheral surface of the inner tube, and the tip is a small diameter portion and a portion other than the small diameter portion. An actuator whose position in the branch pipe is displaced by contact, and a minute opening means for suppressing the amount of gas supplied from the branch pipe to the outer pipe in a state where the tip of the actuator faces the small diameter portion and the tip is free; Position of the minute opening means Mounted on the outer periphery of the actuator at the location of Risotokan side, the gas to the outer pipe side, characterized in that it comprises a check valve to prevent the beverage from flowing back to the small amount opening means.

  The dispensing head according to the present invention is further supported by a hollow portion of a tubular body mounted on a branch pipe, and the hollow portion has a different inner diameter with a thick gas supply side and a thin outer tube side. A step portion is formed at a boundary position of different inner diameters, a step portion formed on the actuator is joined to the step portion, and a minute amount opening means is constituted by joining the step portions to each other.

According to the dispensing head according to the present invention, since the minute opening means is provided in the branch pipe closest to the gas supply source in the dispensing head, the probability of contact with this portion is low. As a result, various components of the beverage are deposited on the minute amount opening means, and the rate of clogging of the minute amount opening means is small, and can operate stably over a long period of time.
However, since the present invention also proposes a structure in which a check valve is provided at a position closer to the outer pipe than the installation position of the minute amount opening means, when the check valve is provided, the rate at which the beverage contacts the further minute amount opening means. As a result, a highly reliable dispensing head can be provided.

The dispensing head according to the present invention includes an actuator in the branch pipe. The actuator is pressed against the outer peripheral surface of the inner tube from the branch tube through the outer tube by the biasing force of the spring. By operating the inner pipe up and down, the tip of the actuator faces the part with a different diameter between the large-diameter part and the small-diameter part of the inner pipe, and the axial direction of the branch pipe inside the branch pipe according to the difference in diameter Move to. In a state where the tip of the actuator is in pressure contact with the large diameter portion of the inner tube, the actuator is displaced to a position farthest from the outer tube, and in this state, the gas cross-sectional area is maximized and the beverage can be dispensed.
When the inner pipe is moved upward from a beverage ready state, the small diameter part approaches the branch position of the branch pipe, the tip of the actuator approaches the small diameter part, and presses against the tapered surface from the large diameter part to the small diameter part The cross-sectional area of the gas flow path by the actuator is gradually reduced, and it starts functioning as a minute amount opening means. Since the siphon pipe valve is closed by the upward movement of the inner pipe while this state is reached, the amount of gas leaking through the minute amount opening means will ensure that the beverage stagnating in the pipe line from the dispense head to the beverage dispensing cock is appropriate. Can be discharged at a high speed (a speed at which the beverage pouring cock can be closed). In other words, if the amount of gas is not sufficiently reduced by the very small opening means, the gas is ejected from the beverage dispensing cock at the end of the beverage, and the beverage dispensed into the cup by the ejection is scattered around. Happens.

  An embodiment of the present invention will be described with reference to FIGS. In FIGS. 1 to 4, parts corresponding to those in FIGS. 6 and 8 are denoted by the same reference numerals. The dispensing head shown in FIGS. 1 to 3 shows a half portion with the center line of the outer tube 31 and the inner tube 32 as a boundary. The structure is the same as the structure of the dispense head described with reference to FIGS. 6 and 8, and the inner tube 32 is supported in the hollow hole of the outer tube 31 so as to be able to move freely. A pair of O-rings 33A and 33B are arranged on the inner wall of the outer pipe 31, and the branch pipe 31A communicates with the position between the pair of O-rings 33A and 33B. Apply to the gap between 31 and the inner tube 32. FIG. 1 shows a state in which a beverage can be dispensed. That is, in this state, the inner tube 32 is pushed to the lowest position by the operation of the lever 34. For this reason, the small diameter portion 32A is arranged at a position facing the lower O-ring 33B, and the sealing performance of the O-ring 33B is removed. Accordingly, the gas pressure applied through the branch pipe 31A is applied through the small diameter portion 32A to the connection portion with the siphon tube 21 shown in FIG. Since the first valve 22 and the second valve 23 provided in the siphon pipe 21 shown in FIG. 7 are operated to open because the inner pipe 31 is pushed down to the lowermost position shown in FIG. The gas pressure applied from 31 A is applied to the beverage container 20, and the beverage is pushed out through the siphon tube 21 and fed to the cooling device 40 through the beverage feed port 38 through the inner tube 32. Therefore, in the state shown in FIG. 1, a cold beverage can be poured out by opening the beverage dispensing cock 41 (see FIG. 5) provided in the cooling device 40.

FIG. 3 shows a beverage dispensing stopped state. That is, in this state, the small diameter portion 32A formed in the inner tube 32 is disposed at a position between the pair of O-rings 33A and 33B, and both the O-rings 33A and 33B are in contact with the large diameter portion of the inner tube 32. Accordingly, the gas pressure applied from the branch pipe 31A is applied to the gap formed by the small diameter portion 32A, but is sealed by the O-rings 33A and 33B and does not leak out.
The above is the same as the conventional technique. The feature of this device is the structure of the actuator 50 attached to the branch pipe 31A. In this embodiment, the hollow hole of the branch pipe 31A is formed to be thicker than the diameter of the hole shown in FIGS. 6 and 8, and a cylindrical body 51 that functions as an auxiliary holder is inserted into this thick diameter part. An O-ring 52 is attached to the peripheral surface of the cylinder 51 to seal between the outer periphery of the cylinder 51 and the inner wall surface of the branch pipe 31A. For example, a rubber cylinder 53 is fitted to the rear end portion (end on the gas pressure supply side) of the cylinder 51. The cylinder 53 acts as a spring receiver, and a spring 54 is inserted between the cylinder 53 and the actuator 50, and the tip of the actuator 50 is pressed against the peripheral surface of the inner tube 32 by the biasing force of the spring 54.

  The actuator 50 has a cylindrical portion 50A having a relatively small diameter on the tip side. The tip of the actuator 50 has an antispherical shape, and smoothly slides with respect to the peripheral surface of the inner tube 32. A check valve 60 formed of a flexible material such as rubber is attached to the rear end side of the cylindrical portion 50A as necessary. The check valve 60 includes a cylindrical portion 61 that fits into the cylindrical portion 50 </ b> A, and a valve portion 62 that projects from the rear end side of the cylindrical portion 61 so as to expand toward the end. The protruding end of the valve portion 62 contacts the inner wall surface of the cylinder 51 and allows the gas to pass without resistance to the gas pressure applied from the gas supply side (arrow A), but from the hollow portion of the outer tube 31. The valve portion 62 expands against the reverse flow and prevents the reverse flow.

Note that the check valve 60 may be provided when high reliability is required, and is not necessarily required.
The cylindrical body 51 includes a first diameter portion 55 and a second diameter portion 56, and a first step portion 57 formed at a boundary position between the first diameter portion 55 and the second diameter portion 56. In this embodiment, the first diameter portion 55 is disposed on the side closer to the outer tube 31, and the second diameter portion 56 is disposed on the gas inflow side from the first diameter portion 55. Accordingly, when the inner diameter of the first diameter portion 55 is R1, and the inner diameter of the second diameter portion 56 is R2, the magnitude relationship between these is selected as R1 <R2. A first step portion 57 is formed at a boundary portion between the first diameter portion 55 and the second diameter portion 56. This 1st step part 57 shows the case where it is set as the taper surface which has about 45 degrees inclination with respect to the axial center of the cylinder 51. As shown in FIG.

  The diameter of the actuator 50 at the portion facing the first diameter portion 55 is selected to be smaller than the diameter R1 of the first diameter portion 55, and a gap is formed between the inner wall surface of the first diameter portion 55 and the actuator 50, Gas flows through this gap. A second step portion 58 is formed in the actuator 50. Similarly to the first step portion 57, the second step portion 58 has a tapered surface having an inclination of about 45 ° with respect to the axis of the cylindrical body 51, and the actuator 50 protrudes most toward the axis of the outer tube 31. When the position is moved, the first step portion 57 and the second step portion 58 are joined to each other. In this joined state, the gas flow is interrupted. However, a minute amount opening means 59 is formed in either the first step portion 57 or the second step portion 58 as shown in FIG. 4, and a slight gas flow is passed through the minute amount opening means 59 through the hollow portion of the outer tube 31. To send. In the example shown in FIG. 4, the minute amount opening means 59 is formed by forming a kerf in the second step portion 58 formed in the actuator 50, and the minute amount opening means 59 is configured by this kerf. One or more kerfs may be formed.

A flange portion F protruding outward is formed at the rear end of the actuator 50. As shown in FIG. 4, the flange portion F has a hexagonal shape as viewed from the axial direction. Accordingly, a gap is formed between each hexagonal flat portion and the inner wall of the cylinder 51, and gas flows through the gap.
As is clear from the above description, the actuator 50 is elastically pressed and biased toward the peripheral surface of the inner tube 32 by the biasing force of the spring 54. Thereby, the actuator 50 moves along the axial center of the branch pipe 31 </ b> A according to the shape of the peripheral surface of the inner pipe 32. In other words, when the inner tube 32 is in the most depressed position, the tip of the actuator 50 faces the large diameter portion of the inner tube 32. In this state, the actuator 50 is located farthest from the axis of the inner tube 32. Move to.

FIG. 1 shows this state. In the state shown in FIG. 1, the first step portion 57 and the second step portion 58 face each other at the farthest position, and in this state, the gas is supplied to the hollow portion of the outer tube 31 without resistance. At this time, since the O-ring 33B faces the small-diameter portion 32A, the gas pressure blows downward through the gap between the O-ring 33B and the O-ring 33B and is applied to the beverage container 20 shown in FIG. Therefore, when the beverage pouring cock 41 shown in FIG. 5 is opened, the beverage is pushed out of the beverage container 20 through the siphon tube 21 and fed to the cooling device 40 through the inner tube 32.
When the inner pipe 32 is moved upward from the state shown in FIG. 1 and set to the position shown in FIG. 2 (position where the actuator 50 faces the inner diameter portion 32A), the actuator 50 is positioned most at the axis of the inner pipe 32 in this state. Move to the closest position. By this movement, the first step portion 57 and the second step portion 58 are joined, the gas flow is shut off, and a minute amount gas is supplied through the minute amount opening means 59. In this state, the valve provided in the siphon tube 21 is closed, and the O-ring 33B is slightly opened facing a part of the small diameter portion 32A as shown in FIG. When the outlet cock 41 is opened, the beverage remaining in the upper part of the siphon tube 21 is pushed out toward the cooling device 40 by the slightly supplied gas. That is, all the beverages staying in the beverage supply path between the dispense head 30 and the cooling device 40 in the state shown in FIG. 2 can be discharged.

After the beverage is discharged, when the inner tube 32 is moved to the highest position as shown in FIG. 3, the O-ring 33B contacts the large diameter portion of the inner tube 32, and the gas flow is completely blocked. That is, it becomes a drink dispensing stop state.
As described above, in the dispense head, since the minute amount opening means 59 is provided in the branch pipe 31A as a gas supply source, the rate at which the beverage flows back to the branch pipe 31A is low. Therefore, the rate at which the beverage comes into contact with the minute amount opening means 59 is low, and the rate at which the minute amount opening means 59 is clogged by the accumulation of components contained in the beverage can be lowered.

  When high reliability is required, a check valve 60 may be provided on the tip side of the actuator 50. When the check valve 60 is provided, even if the beverage flows back into the branch pipe 31A, the probability that the beverage reaches the minute opening means 59 can be reduced. As a result, a dispensing head that can be used stably over a long period of time and has high reliability can be provided.

  The dispensing head according to this device is used for beer sales in restaurants.

Sectional drawing for demonstrating the drink extraction state of the dispense head by this device. Sectional drawing for demonstrating the very small amount open state of the dispensing head by this invention. Sectional drawing for demonstrating the dispensing stop state of the dispense head by this invention. The front view for demonstrating an example of the very small amount opening means used for this invention. The arrangement | positioning figure for demonstrating background art. Sectional drawing for demonstrating the structure of the conventional dispensing head. The side view which makes a part the cross section for demonstrating the structure of the siphon tube with which a drink container is mounted | worn. Sectional drawing for demonstrating the structure of the dispensing head proposed previously.

Explanation of symbols

31 Outer pipe 52 O-ring 31A Branch pipe 53 Tube part
32 Inner tube 54 Spring 32A Small diameter portion 55 First diameter portion 33A, 33B O-ring 56 Second diameter portion
34 Lever 57 First step
50 Actuator 58 Second stage
51 Cylinder 59 Small amount opening means
60 Check valve

Claims (3)

An outer pipe connected to a siphon pipe supported by being supported by being suspended from the beverage outlet of the beverage container toward the bottom of the beverage container.
In this outer pipe, an inner pipe that is supported so as to be able to move in the axial direction of the outer pipe and has a small diameter portion against the branching position of the branch pipe provided in the outer pipe,
Consists of a pair of O-rings provided on the inner wall of the outer pipe on one side and the other side across the position of the branch pipe provided on the outer pipe, and the inner pipe is connected to the outer pipe and the siphon pipe In a state displaced in the direction away from the portion, the pair of O-rings contacts other than the small diameter portion provided in the inner tube, and the space sandwiched between the pair of O rings including the small diameter portion is maintained airtight, In a state where the inner tube is displaced in a direction approaching the connecting portion between the outer tube and the siphon tube, an o-ring on the side close to the siphon tube in the pair of o-rings faces the small diameter portion, and the branch tube When the gas pressure supplied from is applied to the beverage container, the beverage is extracted from the beverage container through the siphon tube by applying the gas pressure, and the inner tube is displaced in a direction away from the siphon tube, the siphon Close to the tube O-ring side is in contact at a position other than the small-diameter portion, blocks the application of gas pressure, and the beverage extraction control valve for controlling the extraction of the beverage,
In the pipe of the branch pipe, it is supported so as to be movable in the direction of the branch pipe, protrudes in the pipe axial direction of the outer pipe by the biasing force of the spring, and the tip is elastically pressed against the outer peripheral surface of the inner pipe. An actuator whose position in the branch pipe is displaced by contact of the tip with the small diameter portion and other than the small diameter portion;
A minute amount opening means for suppressing the amount of gas supplied from the branch pipe to the outer pipe in a state where the tip of the actuator is in pressure contact with the small diameter portion;
A dispensing head comprising: An outer pipe connected to a siphon pipe supported by being supported by being suspended from the beverage outlet of the beverage container toward the bottom of the beverage container.
In this outer pipe, an inner pipe that is supported so as to be able to move in the axial direction of the outer pipe and has a small diameter portion against the branching position of the branch pipe provided in the outer pipe,
Consists of a pair of O-rings provided on the inner wall of the outer pipe on one side and the other side across the position of the branch pipe provided on the outer pipe, and the inner pipe is connected to the outer pipe and the siphon pipe In a state displaced in the direction away from the portion, the pair of O-rings contacts other than the small diameter portion provided in the inner tube, and the space sandwiched between the pair of O rings including the small diameter portion is maintained airtight, In a state where the inner tube is displaced in a direction approaching the connecting portion between the outer tube and the siphon tube, an o-ring on the side close to the siphon tube in the pair of o-rings faces the small diameter portion, and the branch tube When the gas pressure supplied from is applied to the beverage container, the beverage is extracted from the beverage container through the siphon tube by applying the gas pressure, and the inner tube is displaced in a direction away from the siphon tube, the siphon Close to the tube O-ring side is in contact at a position other than the small-diameter portion, blocks the application of gas pressure, and the beverage extraction control valve for controlling the extraction of the beverage,
In the pipe of the branch pipe, it is supported so as to be able to move in the pipe axis direction of the branch pipe, protrudes in the pipe axis direction of the outer pipe by the biasing force of the spring, and the tip elastically extends to the outer peripheral surface of the inner pipe An actuator that is in pressure contact, and whose tip is displaced in the branch pipe by contact between the small diameter portion and a portion other than the small diameter portion;
A minute amount opening means for suppressing the amount of gas supplied from the branch pipe to the outer pipe in a state where the tip of the actuator is in pressure contact with the small diameter portion;
A check valve mounted on the outer periphery of the actuator at a position closer to the outer tube than the position of the minute amount opening means, and preventing gas or beverage from flowing back to the minute amount opening means from the outer tube side;
A dispensing head comprising:   3. The dispensing head according to claim 1, wherein the actuator is supported by a hollow portion of a tubular body attached to a pipe line of the branch pipe, and the gas supply side is thick in the hollow part, and the outer pipe side is A thin part having different inner diameters, a step part is formed at a boundary position where the inner diameters are different, a step part formed on the actuator is joined to this step part, and a minute amount releasing means is configured by mutual joining of the step parts. Dispensing head characterized by that.

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