JPH1133512A - Method and device for washing beer barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To well wash both sides of the inner surface of a beer barrel and the outer surface of a downtube for delivery of beer. SOLUTION: The method for washing a beer barrel is performed by prewashing, main washing, hot water washing and rinsing washing in a state in which the beer barrel 1 is inverted. The main washing is performed by both spout washing and bubbling washing. In spout washing, a detergent liquid is spouted into the barrel through the downtube 5 of a beer delivery valve 3 fitted to the mouthpiece 2 of the beer barrel 1. Thereby, the inner surface of the barrel and the outer surface of the downtube are washed by the detergent liquid flowing along the inner surface of the barrel and the outer surface of the downtube. In bubbling washing, the barrel is filled with a detergent liquid and air is sent into the detergent liquid through a gas supply path of the beer delivery valve 3. Then, a sent air becomes bubbles (b) and rises in the detergent liquid. The outer surface of the downtube and the inner surface of the barrel are washed by bubbling of the detergent liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cleaning beer barrels for discharging beer by gas pressure.

[0002]

2. Description of the Related Art A beer barrel for discharging beer by gas pressure has a base in the center of the upper surface of the barrel, a gas supply path communicating with the base at the base of the base, and a base in the barrel. A beer discharge valve having a down tube for beer delivery that is suspended near the bottom of the barrel and communicates with the inside of the barrel is mounted.

[0003] This beer barrel is filled with draft beer in a barrel and shipped from a beer factory, and an empty barrel where beer has been consumed in a beer hall or the like is collected in the beer factory and the beer discharging valve is sealed. After the test and the cleaning of the exposed part and the residual pressure test in the keg, the inside of the keg is washed and filled with draft beer before shipment.

[0006] The internal cleaning of the collected beer barrels is generally performed in the order of discharge of residual beer in the barrels, pre-washing, main cleaning, hot water cleaning, rinsing and steam sterilization. Conventionally, in each of the washings from the pre-washing to the rinsing, the washing liquid is ejected into the barrel through the down tube of the beer outlet valve while the beer barrel is inverted, and the washing liquid accumulated in the barrel is poured into the beer barrel. By discharging the gas from the gas supply path of the outlet valve, the washing is performed by jet cleaning in which the inner surface of the barrel and the outer surface of the down tube are washed with a cleaning liquid which is ejected from the tip of the down tube and flows along the inner surface of the barrel and the outer surface of the down tube. In addition,
The washing liquid used in each of the above washings is water in the prewashing,
In the main cleaning, a detergent solution in which detergent is dissolved in hot water or water is used. In hot water cleaning, warm water is used. In rinsing, hot water or water is used.

[0005]

However, according to the conventional cleaning method in which each cleaning from pre-cleaning to rinsing is performed by the above-mentioned jet cleaning, the inside of the barrel can be cleaned well, but the cleaning effect on the outer surface of the down tube is not sufficient. No, for that,
Beer residue adhering to the outer surface of the down tube remains without being completely removed.

[0006] Although this beer residue is not harmful, it is gradually deposited on the outer surface of the down tube every time the beer filling, beer pouring and washing in the barrel are repeated, and may be peeled off by some trigger such as vibration. Therefore, when the beer flakes are peeled off after washing, the beer flakes may be mixed into the filled beer and may be discharged together with the beer when the beer is discharged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of cleaning a beer barrel that can satisfactorily clean both the inner surface of the barrel and the outer surface of the down tube, and to provide a cleaning apparatus therefor. Things.

[0008]

According to the method for cleaning a beer barrel of the present invention, a base is provided at the center of the upper surface of the barrel, and the base is provided with a gas supply passage communicating with the inside of the barrel at the base of the base. Prewashing performed in a state in which a beer barrel with a beer discharge valve having a down tube for beer delivery, which is suspended in the barrel near the bottom of the barrel and communicates with the inside of the barrel, is mounted upside down,
Among the main washing, warm water washing and rinsing washing, the main washing is performed by ejecting the detergent liquid into the barrel via the down tube of the beer discharging valve and discharging the detergent liquid accumulated in the barrel into the beer injection. While discharging from the gas supply path of the outlet valve, jet cleaning for cleaning the inner surface of the barrel and the outer surface of the down tube with a detergent liquid ejected from the tip of the down tube and flowing along the inner surface of the barrel and the outer surface of the down tube; While discharging via the down tube of the beer discharging valve, the detergent liquid is injected into the barrel from the gas supply path of the beer discharging valve to fill the barrel with the detergent liquid. While feeding air into the detergent liquid and discharging air accumulated in the space above the detergent liquid level in the barrel via the down tube, the air is sent from the gas supply path. Filled-in air is characterized in that performed by both the bubbling cleaning for cleaning the down tube outer surface and barrel inner surface by foaming of the detergent liquid by rising as bubbles detergent solution.

That is, in the cleaning method of the present invention, the main cleaning in the beer barrel is performed by both the jet cleaning and the bubbling cleaning.
Although the cleaning effect on the outer surface of the down tube is not sufficient,
Since the cleaning effect on the inner surface of the barrel is high, the inner surface of the barrel is cleaned well.

On the other hand, in the bubbling cleaning, air bubbles sent into the detergent liquid from a gas supply passage communicating with the inside of the beer barrel at the base of the base of the beer barrel mainly rise around the down tube, and the detergent is washed. The liquid foams more vigorously around the down tube. Therefore, although the cleaning effect on the inner surface of the barrel is not sufficient, the cleaning effect on the outer surface of the down tube is high, so that the outer surface of the down tube is well cleaned. Therefore, according to this cleaning method, both the inner surface of the barrel and the outer surface of the down tube can be satisfactorily cleaned.

[0011] Further, the beer barrel cleaning apparatus of the present invention comprises:
A cleaning head connected to a beer discharge valve of the beer barrel, and a supply / discharge unit for supplying a detergent liquid, air, etc., wherein the cleaning head is connected to a gas supply path of the beer discharge valve. A flow path, a second flow path leading into the down tube of the beer discharge valve, and two supply-side and discharge-side ports communicating with the first flow path; A supply side and a discharge side that are in communication with a passage, and the supply / discharge unit is configured to supply a detergent to a supply side port that communicates with a second flow path of the cleaning head during the jet cleaning. The cleaning liquid is discharged from the discharge side port communicating with the first flow path while supplying the liquid, and the detergent liquid is supplied to the supply side port communicating with the first flow path of the cleaning head during the bubbling cleaning. To the second flow path The gas in the barrel is discharged from the discharge side port through which the gas flows, and thereafter, the detergent liquid is supplied to the supply side port communicating with the first flow path and the discharge side port communicates with the second flow path. It is characterized by discharging air.

That is, the cleaning apparatus of the present invention has a beer outlet valve of a beer barrel having first and second flow paths respectively connected to a gas supply path and a down tube of the beer outlet valve. The cleaning head provided with two ports each connected to the flow path of the cleaning head is connected, and in this state, the supply side port communicating with the second flow path of the cleaning head by the supply / discharge means. Performing the jet washing by discharging the detergent liquid from a discharge side opening communicating with the first flow path while supplying the detergent liquid to the first flow path;
Further, the supply / discharge means supplies the detergent liquid to a supply side port communicating with the first flow path of the cleaning head and discharges the gas in the barrel from a discharge side port communicating with the second flow path. Thereafter, the bubbling cleaning is performed by supplying a detergent liquid to a supply side port communicating with the first flow path and discharging air from a discharge side port communicating with the second flow path. According to this cleaning apparatus, the jet cleaning and the bubbling cleaning can be performed continuously.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, in the method for cleaning a beer barrel of the present invention, the main cleaning of the beer barrel is performed by jet cleaning having a high cleaning effect on the inner surface of the barrel and bubbling cleaning having a high cleaning effect on the outer surface of the down tube. By doing so, both the inner surface of the barrel and the outer surface of the down tube are effectively cleaned.

In this cleaning method, it is desirable that air is mixed into the detergent liquid supplied to the down tube of the beer discharging valve when the jet cleaning is performed. In this case, the detergent liquid jetted into the barrel is preferably used. Can be enhanced by the mixed air to enhance the cleaning effect on the inner surface of the barrel by the jet cleaning and the cleaning effect on the outer surface of the down tube to some extent.

Further, the apparatus for cleaning a beer keg according to the present invention comprises:
As described above, there are the first and second flow paths respectively connected to the gas supply path and the down tube of the beer discharge valve of the beer barrel, and two ports each communicating with these flow paths are provided. The cleaning head provided is connected to the beer discharge valve, and the supply and discharge means supplies a detergent liquid or air to a predetermined opening of the cleaning head and a predetermined opening. The jet cleaning and the bubbling cleaning can be continuously performed in an arbitrary order by discharging the detergent liquid or the gas and the air in the barrel from the apparatus.

In the cleaning apparatus, it is preferable that the supply / discharge means includes a means for mixing air into a detergent liquid supplied to a supply-side port communicating with the second flow path of the cleaning head. By doing so, air is mixed into the detergent liquid supplied to the down tube of the beer discharge valve at the time of the jet washing, and the washing effect of the inner surface of the barrel by the jet washing is further enhanced, and the washing effect of the outer surface of the down tube is also somewhat improved Can be enhanced.

In this cleaning apparatus, it is desirable to provide a valve for opening and closing each of the two ports communicating with the first and second flow paths of the cleaning head. With this configuration, the flow path between each opening of the cleaning head and the supply / discharge unit is selectively shut off at the opening, and the supply side opening of the cleaning head is supplied from the supply system of the supply / discharge unit. Preventing a portion of the detergent liquid or air supplied to the outlet side of the supply / discharge means from the discharge side port communicating with the first or second flow path communicating with the port thereof, The detergent liquid or air supplied to the cleaning head can be efficiently introduced into the barrel.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a configuration diagram of a beer barrel cleaning device,
FIG. 2 is a cross-sectional view of the cleaning head, and FIG.
FIG. 4 is a sectional view of a beer barrel to be cleaned, FIG. 5 is an enlarged sectional view of a beer discharging valve of the beer barrel, and FIG. 6 is a state in which the cleaning head is connected to the beer discharging valve. 7 is a cross-sectional view of a beer barrel cleaning process, and FIGS.
FIG. 10 is a flow chart in each washing process of the beer barrel.

First, the beer barrel 1 shown in FIG. 4 will be described. The beer barrel 1 is made of stainless steel, and a base 2 is provided at the center of the upper surface of the barrel. An injection valve 3 is provided.

The beer discharge valve 3 includes an outer cylinder 4 having an annular bottom screwed into the inside of the base 2 with a bottom part projecting slightly into the beer barrel 1, and a beer barrel from the outer cylinder 4. 1 and a down tube 5 for sending out beer.

The down tube 5 is a stainless steel tube having a length reaching the vicinity of the barrel bottom of the beer barrel 1, and the base end of the down tube 5 is inserted into the outer cylinder 4. It is vertically movably supported by the outer cylinder 4 via a coil spring 6 which is loosely fitted to the outer periphery thereof and is interposed in a compressed state between the flange portion at the base end of the tube and the annular bottom of the outer cylinder 4. I have.

As shown in FIG. 5, a plurality of openings 7 are formed on the peripheral surface of the portion of the outer cylinder 4 projecting into the beer barrel 1 at intervals in the circumferential direction, and the upper edge thereof is formed. The beer barrel 1 is provided so as to be flush with the inner surface of the barrel of the mouth portion of the beer barrel 1 or at a height higher than the inner surface of the barrel and into the base 2.

The space between the inner peripheral surface of the outer cylinder 4 and the outer peripheral surface on the base end side of the down tube 5 is provided with a gas supply passage 8 for supplying the beer delivery gas into the beer barrel 1. The gas supply path 8 communicates with the beer barrel 1 through the plurality of openings 7 provided in the outer cylinder 4 near the base of the base 2.

An annular valve seat 9 protrudes from the inner peripheral surface of the outer cylinder 4 to face the base end of the down tube 5 from above. A ring member 10 having an annular valve portion projecting outward from the down tube 5 at the upper portion and a tubular valve seat portion projecting inside the down tube 5 at the lower portion is fitted. A gas valve V1 for opening and closing the gas supply passage 8 is constituted by the flange-shaped valve portion and the annular valve seat portion 9 on the inner peripheral surface of the outer cylinder.

Further, the base end side of the down tube 5 is formed to have a slightly larger diameter than the other portion, and a valve member 11 having a notched beer passage is accommodated in the large diameter portion so as to be vertically movable. Further, a coil spring 12 for pressing the valve member 11 upward is provided.
And the cylindrical valve seat at the lower part of the ring member 10 fitted to the base end of the down tube 5,
A beer valve V2 that opens and closes a beer delivery path made of beer.

The beer barrel 1 is filled with draft beer in a barrel and shipped from a beer manufacturing factory, and an empty barrel in which beer is consumed in a beer hall or the like is collected by the beer manufacturing factory and a beer discharging valve 3 is provided. After performing the seal test, cleaning of the exposed portion and the residual pressure test in the barrel, the inside of the barrel is cleaned, and the draft beer is filled again and shipped.

The internal cleaning of the collected beer barrel 1 will be described.
1 in a state where is turned upside down (the base 2 is turned down).
The cleaning is performed by the cleaning device having the structure shown in FIG. This cleaning device comprises a cleaning head 13 connected to the beer discharge valve 3 of the beer barrel 1 turned upside down, and a supply and discharge means 40 for supplying detergent liquid and air.

First, the cleaning head 13 will be described. In FIGS. 2 and 3, a member denoted by reference numeral 14 is a head main body that stands vertically on the cleaning table A. At the tip (upper end), a bottomed rod guide hole 15 is provided vertically, and in the middle of the rod guide hole 15, a cylinder chamber 16 formed by increasing the inner diameter of the portion is provided. A pair of air supply / exhaust passages 17, one end of which is open at both end surfaces of the cylinder chamber 16 and the other end is open at the outer surface of the head body 14.
a and 17b are provided.

A hollow piston rod 18 having a piston 19 accommodated in the cylinder chamber 16 is provided in the rod guide hole 15 of the head body 14 with the inner peripheral surface of the rod guide hole 15 and the cylinder chamber 16. The space between them is hermetically sealed by a seal ring (not shown) and is slidably inserted.

The front end of the rod guide hole 15 of the head main body 14, that is, the portion that opens to the front end of the head main body 14, is formed to have a diameter slightly larger than that of the rod guide hole 15. The space between the inner peripheral surface of the diameter portion and the outer peripheral surface of the piston rod 18 is connected to the gas supply path 8 of the beer discharge valve 3 of the beer barrel 1 by the first flow path 2.
It is 0.

On the other hand, the space in the piston rod 18 is a second flow path 21 connected to the beer delivery down tube 5 of the beer discharge valve 3. The second flow path 21 has a base end, that is, the piston rod 1
At the base end (lower end) 8, the head body 14 communicates with the base end of the rod guide hole 15. A small-diameter projection 18a is provided at the distal end (upper end) of the piston rod 18 to enter the ring member 10 fitted to the base end of the down tube 5 of the beer discharging valve 3. An opening 22 for communicating the second flow path 21 into the down tube 5 is provided at a corner between the distal end surface and the peripheral surface of the protruding portion 18a.

Further, a packing ring 23 is provided at the periphery of the tip end surface of the head main body 14 so as to be in close contact with the base 2 of the beer barrel 1 and the end surface of the outer cylinder 4 of the beer discharging valve 3. On the stepped surface around the protruding portion 18a at the tip of the piston rod 18, a packing ring 24 that is in close contact with the end surface of the ring member 10 fitted to the base end of the down tube 5 of the beer discharge valve 3 is provided. Have been.

That is, the cleaning head 13 is connected to the beer discharging valve 3 of the beer barrel 1 through the packing rings 23 and 24, and the connection is made by turning the beer barrel 1 upside down. The head body 1 of the cleaning head 13 is fixed to the end face of the base 2 and the outer cylinder 4 of the beer discharge valve 3
4 against the packing ring 23 on the tip surface,
This is performed by pushing the piston rod 18 of the cleaning head 13.

Before the piston rod 18 is connected to the beer discharge valve 3, the piston rod 18 is retracted to the position shown by the solid line in FIG. 2 and the space below the cylinder chamber 16 of the cleaning head 13 (below the piston 19). One of the air supply and exhaust passages 1)
7a and the cylinder chamber 1
2 is discharged from the other air supply / exhaust passage 17b by discharging the air in the upper space (space above the piston 19) of FIG.
And pressurized air is sent from the other air supply / exhaust passage 17b into the upper space of the cylinder chamber 16 and air in the lower space of the cylinder chamber 16 is sent out from the one air supply / exhaust passage 17a. It is drawn back to its original position by discharging.

The end face of the base 2 of the beer barrel 1 and the end surface of the outer cylinder 4 of the beer discharging valve 3 are pressed by, for example, the beer barrel 1 from above by a barrel holding mechanism (not shown, for example, an air cylinder). The air supply / exhaust from the air supply / exhaust passages 17a and 17b is pressed against the cleaning head 13,
The supply and exhaust to and from the supply and exhaust hoses 34a and 34b connected to the supply and exhaust passages 17a and 17b are controlled and controlled by a control device (not shown).

As described above, the beer barrel 1 is turned upside down, and the base 2 and the end surface of the outer cylinder 4 of the beer discharging valve 3 are pressed against the packing ring 23 on the end surface of the head body 14 of the cleaning head 13. The cleaning head 13 in the state
When the piston rod 18 is pushed out, first, the projecting portion 18a at the tip of the piston rod 18 is fitted with the ring member 1 fitted to the base end of the down tube 5 of the beer discharging valve 3.
0 into the valve member 11 in the down tube 5.
The valve member 11 is pushed up while compressing the coil spring 12, and the beer valve V2 of the beer discharge valve 3 is opened as shown in FIG.

When the piston rod 18 is pushed out to a certain extent, the packing ring 23 provided on the stepped surface at the distal end of the piston rod 18 comes into close contact with the end surface of the ring member 10 at the base end of the down tube 5. When the piston rod 18 is further pushed out, the ring member 10 is pushed up while compressing the coil spring 12, and the gas valve V1 of the beer discharge valve 3 is opened as shown in FIG.

Therefore, in the cleaning head 13, the first flow path 20 is communicated with the gas supply path 8 of the beer discharge valve 3, and the second flow path 21 is connected to the opening 22 at the tip of the piston rod 18. Is connected to the beer discharge valve 3 while communicating with the down tube 5 of the beer discharge valve 3 via the.

The cleaning head 13 is provided with the first
Two openings 20a and 20b communicating with the second flow path 20 and two openings 21a and 21b communicating with the second flow path 21
And

These mouths 20a, 20b and 21
Reference numerals a and 21b denote screw holes formed on both the side surfaces on the distal side and the base side of the head body 14, respectively, and the opening portions 20a and 20b on the distal side are the first flow paths 20a and 20b, respectively. The opening 21a, 21b on the base end side is opened at the base end of the rod guide hole 15, and communicates with the second flow path 21 through the base end of the rod guide hole 15. Communicating.

Each of the mouths 20a, 20b and 21a,
21b, one opening 2 communicating with the first flow path 20
0a and one opening 21a communicating with the second flow path 21 are supply-side openings, respectively, and communicate with the other opening 20b communicating with the first flow path 20 and the second flow path 21. The other ports 21b are discharge side ports, respectively.

The two openings 20a and 20b communicating with the first and second flow paths of the cleaning head 13 are provided.
And 21a, 21b are provided with valves 25a, 25b, 25c, 25d for opening and closing their mouths, respectively.

Each of the valves 25a, 25b, 25c, 2
Reference numeral 5d denotes a pneumatic opening / closing valve having the same structure, and has, at one end, openings 20a, 20b, 21a, 21 of the cleaning head 13.
A piston valve 32 that moves by air pressure is provided in a valve body 26 that has a threaded portion for b and a connection portion of a supply pipe or a discharge pipe of a supply / discharge means 40 described later at the other end. .

The valve main body 26 is formed of a cylindrical member having through holes 27 opened at both ends thereof. In the valve main body 26, the inside diameter of the portion is increased in the middle of the through hole 27. And a pair of supply / exhaust passages 29a and 29b each having one end opened to both end surfaces of the cylinder chamber 28 and the other end opened to the outer surface of the valve body 26.

Further, in the valve body 26, the openings 20a, 20b, 21a, 21 of the cleaning head 13 are provided.
A valve chamber 30 formed by increasing the inner diameter of the through hole 27 at that portion is provided in a portion near the end portion on the side that is screwed and connected to b. In this valve chamber 30, a fixed valve seat 31 is provided. ,
It is installed with a circulation gap around it.

The piston valve 32 has a piston 33 housed in the cylinder chamber 28 of the valve body 26 formed on the outer periphery of an intermediate portion of a tubular member whose both ends are open. The end on the side is a valve portion that comes into contact with and separates from the valve seat 31 in the valve chamber 30.

The piston valve 32 is hermetically sealed by a seal ring (not shown) between the through hole 27 of the valve body 26 and the inner peripheral surface of the cylinder chamber 28, and can slide into the valve body 26. Has been inserted.

That is, the valves 25a, 25b, 2
5c and 25d are cylinder chambers 28 of the valve body 26.
It is opened and closed by the supply and exhaust of air to the cylinder chamber. The pressurized gas is sent from one supply / exhaust passage 29a to the cleaning head side space of the cylinder chamber 28 (the space on the cleaning head 13 side from the piston 33). When the gas in the space on the opposite side of the cylinder chamber 28 is exhausted from the other air supply / exhaust passage 29b, the piston valve 32 moves in a direction away from the valve seat 31 and becomes open, and the space on the opposite side of the cylinder chamber 28 is opened. When the pressurized gas is sent from the other supply / exhaust passage 29b to the air and the air in the cleaning head side space is exhausted from the one supply / exhaust passage 29a, the piston valve 32
1 and comes into a closed state.

The supply and exhaust from the supply and exhaust passages 29a and 29b are controlled by a controller (not shown) which controls supply and exhaust to supply and exhaust hoses (not shown) connected to the supply and exhaust passages 29a and 29b. Do.

The two opening portions 20a and 20b communicating with the first and second flow paths of the cleaning head 13 are provided.
And the valves 2 provided in each of 21a and 21b
5a, 25b, 25c, and 25d are provided with supply / discharge means 40.
Supply pipe or discharge pipe is connected.

The supply / discharge means 40 discharges residual beer,
In the internal washing of the beer barrel 1 performed in the order of pre-washing, main washing, warm water washing, rinsing washing, and steam sterilization, the washing liquid, air and steam are supplied to each of the mouths 20a, 20b, 21a and 21b of the washing head 13. Two mouths 2
0a and 21a, and the detergent liquid and air or steam are supplied to the other two openings 20a and 21a.
b and 21b.

In this embodiment, the pre-washing, the main washing, the warm water washing, and the rinsing washing are performed as washing liquids, which are water for pre-washing, a detergent solution obtained by dissolving a detergent in warm water for the main washing, and a warm water washing. Uses recovered hot water (hereinafter, referred to as first hot water) in the next rinsing, and uses new hot water (hereinafter, referred to as second hot water) for rinsing.

The supply / discharge means 40 will now be described. As shown in FIG. 1, the supply / discharge means 40 includes sterilizing air, pre-wash water, detergent liquid used for main cleaning, first hot water used for hot water cleaning, rinse cleaning. Supply pipes 41, 42, which supply the second warm water and the sterilizing steam, respectively, used for the
43, 44, 45 and 46 are provided. In addition, a main valve (in this embodiment, an electromagnetic valve) 47 that is always kept open during the operation of the cleaning device is provided at each of the inlets of these pipes.

The sterilizing air, pre-wash water, second warm water and steam are supplied from a supply source (not shown) to respective supply pipes 4.
1, 42, 45, 46, the detergent liquid is supplied from a detergent liquid tank 48 to a detergent liquid supply pipe 43 by a pump 48a, and the first hot water is supplied from a first hot water tank 49 to a pump 49a.
a to the first hot water supply pipe 44.

Each of the supply pipes 41, 42, 43, 44,
Reference numerals 45 and 46 denote supply control valves provided at the outlets of the respective pipes (in this embodiment, pneumatic opening / closing valves having substantially the same structure as the valves provided at the openings 20a, 20b, 21a and 21b of the cleaning head 13). ) 51, 52, 53, 5
4, 55 and 56 are connected to the supply relay section 50.

The supply relay section 50 is connected to each of the supply pipes 4.
1, 42, 43, 44, 45, and 46 are formed of a tube material having substantially the same diameter as that of the supply relay portion 50, and a connection pipe 57 to the cleaning head 13 is led out.

The cleaning head connection pipe 57 is branched into two pipes 57a and 57b, and one of the branch pipes 57a is connected to the first flow path (beer barrel 1) of the cleaning head 13.
Flow path connected to gas supply path 8 of beer discharge valve 3)
20 is connected to the supply side port 20a of the two ports 20a and 20b through the open / close valve 25a, and the other branch pipe 57b is connected to the second flow path of the cleaning head 13 (the beer). Down tube 5 of injection valve 3
Two mouths 21a communicating with the flow passage 21);
The opening / closing valve 25 is provided at the supply side port 21a of the
c.

The supply pipes 41, 42, 4
3, 44, 45, 46 and supply control valves 51, 52, 53, 54, 55, 56 provided at the outlets of these pipes.
A supply side port 20a communicating with the first flow path 20 of the cleaning head 13; and a supply side port communicating with the second flow path 21 of the cleaning head 13. Opening / closing valves 25a, 2 provided in the section 21a, respectively.
5c constitutes a supply system of the supply and discharge means 40.

That is, this supply system uses the sterilizing air, pre-wash water, detergent solution, first hot water, second hot water, and steam supplied from the supply pipes 41, 42, 43, 44, 45, and 46, respectively. The supply control valves 51, 52, 53, 54, 55, 56 provided at the outlets of these pipes are selectively opened / closed to the supply relay section 50, and the introduced fluid is passed through the cleaning head connection pipe 57. And the cleaning head 13
The fluid supplied to the cleaning head 13 is supplied to one of the supply port 20a communicating with the first flow path 20 and the supply port 21a communicating with the second flow path 21. By opening one of the open / close valves 25a, 25c of each of the supply-side ports 20a, 21a, the liquid is supplied to the ports.

The supply / discharge means 40 is provided with a detergent liquid discharge pipe 58 for discharging the discharged detergent liquid out of the discharged fluid from the beer barrel 1, and a rinse drain (a drain of the second warm water used for the rinse cleaning). ) And a common discharge pipe 60 for discharging other discharge fluids, that is, pre-wash water, first warm water, steam and the like.

The inflow sides of these discharge pipes 58, 59, 60 are provided with discharge control valves (pneumatic opening / closing valves in this embodiment) 62, 63, 6 provided at the inlets of the respective pipes.
The outlet of the detergent liquid discharge pipe 58 among the discharge pipes opens into the detergent liquid tank 48, and the outlet of the rinse drain discharge pipe 59 is connected to the Opened in the first hot water tank 49, the outlet of the common discharge pipe 60 faces the waste liquid drain 61.

The discharge relay section 65 is connected to each of the discharge pipes 5.
8, 59, 60, the discharge relay portion 56 has a connection pipe 6 for connecting to the cleaning head 13.
7 has been derived.

The cleaning head connection pipe 67 is branched into two pipes 67a and 67b, and one of the branch pipes 67a is connected to the first flow path (beer barrel 1) of the cleaning head 13.
Flow path connected to gas supply path 8 of beer discharge valve 3)
20 is connected to the discharge port 20b of the two ports 20a and 20b through the open / close valve 25b, and the other branch pipe 67b is connected to the second flow path of the cleaning head 13 (the beer). Down tube 5 of injection valve 3
Two mouths 21a communicating with the flow passage 21);
The opening / closing valve 25 is provided on the discharge side port 21b of the outlet 21b.
d.

The discharge pipes 58, 59, 60
And a discharge control valve 6 provided at the inlet of these pipes.
2, 63, 64, the discharge relay section 65, the cleaning head connection pipe 67, the discharge side opening 20 b communicating with the first flow path 20 of the cleaning head 13, and the second flow path 21.
The opening and closing valves 25b and 25d respectively provided at the discharge side opening 21b communicating with the supply and discharge means 4b.
0 discharge system is configured.

That is, in this discharge system, the discharge fluid from the beer barrel 1 is opened by opening one of the open / close valves 25 of the discharge side ports 20a and 21a of the cleaning head 13. And the fluid is introduced into the discharge relay section 65 via the cleaning head connection pipe 67, and the fluid is supplied to one of the supply pipes 58, 59, and 60 at the discharge port provided at the respective inlet. Control valve 6
2, 63 and 64 are selectively opened and closed to be discharged.

Next, the internal cleaning of the beer barrel 1 performed by the above-described cleaning apparatus will be described. This beer barrel 1
The beer barrel 1 to be washed is turned upside down,
And a packing ring 23 on the end face of the head body 14 of the cleaning head 13 with the end face of the outer cylinder 4 of the beer discharge valve 3.
6 by pushing the piston rod 18 of the cleaning head 13 to open the beer valve V2 and the gas valve V1 of the beer discharge valve 3 as shown in FIG. The first flow path 20 and the second flow path 21 are communicated with the gas supply path 8 and the down tube 5 of the beer discharge valve 3 respectively.

Then, the internal cleaning of the beer barrel 1 is performed in the order of discharge of residual beer → pre-cleaning → main cleaning → warm water cleaning → rinse → steam sterilization as in the cleaning step shown in FIG. Each of these cleaning operations is performed by supplying and discharging air, a cleaning liquid, and the like through the flow paths shown in FIGS. 8 to 10, among the branch pipes 57a, 57b and 67a, 67b of the cleaning head connection pipes 57 and 67 of the supply and discharge means 40, the pipe selected as the supply and discharge flow path is indicated by a solid line. The non-selected pipes are shown by broken lines.

FIGS. 8A and 8B are flow charts for the remaining beer discharge and the pre-washing, respectively. FIG. 8A shows the flow path for the remaining beer discharge, and FIG. 8B shows the flow path for the pre-washing. The remaining beer discharge is controlled by the supply control valves 51 of the supply / discharge unit 40.
And the discharge control valves 62 to 64, the supply control valve 51 of the air supply pipe 41, and the common discharge pipe 60.
And the opening / closing valves 25a, 25b, 25c, 2 at the respective openings of the cleaning head 13 are opened.
5d, the inflow-side opening 21a communicating with the second flow path 21
The opening and closing valve 25c of the outflow side port 20b communicating with the first flow path 20 is opened.

Each of the valves 51, 64, 25c, 25b
Is opened, sterilization air supplied from a supply source (not shown) is supplied to the air supply pipe 41, the supply relay section 50, the cleaning head connection pipe 57, and the second flow path 21 of the cleaning head 13.
Is supplied into the down tube 5 of the beer discharge valve 3 through the end of the down tube 5 in FIG.
The beer barrel 1 is supplied into the beer barrel 1 as indicated by an arrow, and the remaining beer A in the beer barrel 1 flows into the gas supply path 8 of the beer discharge valve 3 from the opening 7 of the outer cylinder 4 by the air pressure. Then, the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60
Through the drain 61.

The pre-washing is performed by the supply control valve 51 of the air supply pipe 41 and the supply control valve 52 of the pre-wash water supply pipe 42, and the discharge control valve 64 of the common discharge pipe 60.
The opening and closing valve 25c of the inflow side port 21a communicating with the second flow path 21 of the cleaning head 13 and the opening and closing valve 25b of the outflow side port 20b communicating with the first flow path 20 are opened.

Each of the valves 51, 52, 64, 25c,
When 25b is opened, the pre-wash water supplied from a supply source (not shown) is supplied to the supply relay section 50 via the pre-wash water supply pipe 42, and the sterilizing air is supplied to the supply relay section 50 via the air supply pipe 41. And the supply relay unit 5
Air is mixed into the pre-wash water within 0, and the pre-wash water containing bubbles is supplied from the supply relay unit 50 to the beer injection via the cleaning head connection pipe 57 and the second flow path 21 of the cleaning head 13. It is supplied into the down tube 5 of the outlet valve 3.

Then, the pre-wash water supplied into the down tube 5 is jetted into the beer barrel 1 from the tip of the down tube 5, and as shown by an arrow in FIG. It flows down the outer surface of the tube.

The pre-wash water accumulated in the beer barrel 1 is supplied to the gas supply path 8 of the beer discharge valve 3 through the opening 7 of the outer cylinder 4.
And is discharged to the drain 61 through the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60.

That is, in the prewashing, the prewash water is jetted into the beer barrel 1 through the down tube 5 of the beer discharge valve 3 and the prewash water accumulated in the barrel is supplied to the gas supply passage 8 of the beer discharge valve 3. By jetting water from the down tube 5, the inside of the barrel and the outer surface of the down tube are washed by pre-wash water which is jetted from the tip of the down tube 5 and flows along the inner surface of the barrel and the outer surface of the down tube.
In this embodiment, since air is mixed into the pre-wash water, effective pre-wash can be performed by the pre-wash water containing bubbles.

FIG. 9 is a flow chart showing the main cleaning after the pre-washing, which is performed at the time of jet cleaning, at the time of injection of the detergent solution, and at the time of bubbling cleaning. (C) is supplied into the beer barrel 1 by jet flow cleaning, and then the detergent liquid is filled in the beer barrel 1 through the flow path shown in FIG. 9 (d). Fig. 9
(E) is supplied into the beer barrel 1 through the flow path shown in FIG.

The jet cleaning in the main cleaning includes a supply control valve 51 of the air supply pipe 41 and a supply control valve 53 of the detergent liquid supply pipe 43, a discharge control valve 62 of the detergent liquid discharge pipe 58, and a cleaning control of the cleaning head 13. Second flow path 21
Opening / closing valve 25c of the inflow side port 21a communicating with the first flow path 20, and opening / closing valve 2 of the outflow side port 20b communicating with the first flow path 20.
5b.

Each of the valves 51, 53, 62, 25c,
When 25b is opened, the detergent liquid B sent from the detergent liquid tank 48 by the pump 48a is supplied to the supply relay section 50 via the detergent liquid supply pipe 43, and the sterilizing air is supplied through the air supply pipe 41 The detergent is supplied to the supply relay unit 50, and air is mixed into the detergent liquid in the supply relay unit 50, and the detergent liquid containing bubbles is supplied to the supply relay unit 50.
From the cleaning head connection pipe 57 and the cleaning head 1
The beer is supplied into the down tube 5 of the beer discharge valve 3 through the second flow path 21.

Then, the detergent liquid supplied into the down tube 5 is jetted into the beer barrel 1 from the tip of the down tube 5, and as shown by an arrow in FIG. It flows down the outer surface of the tube.

The detergent liquid accumulated in the beer barrel 1 is supplied to the gas supply passage 8 of the beer discharge valve 3 through the opening 7 of the outer cylinder 4.
Through the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the detergent liquid discharge pipe 58, and is returned to the detergent liquid tank 48.

That is, in this cleaning, the detergent liquid is jetted into the beer barrel 1 via the down tube 5 of the beer discharge valve 3 and the detergent liquid accumulated in the barrel is supplied to the gas supply passage 8 of the beer discharge valve 3. The jet cleaning is a jet washing in which the inner surface of the barrel and the outer surface of the down tube are washed with a detergent liquid ejected from the tip of the down tube 5 and flowing along the inner surface of the barrel and the outer surface of the down tube.

In this jet cleaning, as described in the section of [Problems to be Solved by the Invention], the down tube 5
Although the cleaning effect on the outer surface of the barrel is not sufficient, the cleaning effect on the inner surface of the barrel is high, so that the inner surface of the barrel is well cleaned.

In this embodiment, since air is mixed in the detergent liquid, foaming of the detergent liquid jetted into the beer barrel 1 is assisted by the mixed air to clean the inner surface of the barrel by the jet washing. The effect can be enhanced, and the effect of cleaning the outer surface of the down tube can be enhanced to some extent.

Next, the bubbling cleaning after the jet cleaning with the detergent liquid will be described. In the bubbling cleaning, first, the detergent liquid is poured into the beer barrel 1 as shown in FIG. First, the beer barrel 1 is filled with the detergent liquid B to a level near the tip of the down tube 5, and then air is fed into the detergent liquid B in the barrel as shown in FIG. 9 (e).

In this bubbling cleaning, beer barrel 1
The supply of the detergent liquid B into the inside is performed by the supply control valve 53 of the detergent liquid supply pipe 43 and the discharge control valve 6 of the common discharge pipe 60.
4, the opening and closing valve 25a of the inflow side port 20a communicating with the first flow path 20 of the cleaning head 13 and the opening and closing valve 25d of the outflow side port 21b communicating with the second flow path 21 are opened.

Each of the valves 53, 64, 25a, 25d
Is opened, the detergent liquid B sent out from the detergent liquid tank 48 by the pump 48a is supplied to the detergent liquid supply pipe 43 and the supply relay section 5.
0, cleaning head connection pipe 57 and cleaning head 13
Is supplied to the gas supply path 8 of the beer discharge valve 3 through the first flow path 20 of the above, and the detergent liquid is shown by an arrow in FIG. 9D from the opening 7 of the outer cylinder 4 of the gas supply path 8. As described above, the gas (residual air) in the beer barrel 1 flows into the down tube 5 from the tip thereof due to a rise in the barrel internal pressure accompanying the injection of the detergent liquid, and the cleaning head 13 The gas is discharged from the outlet of the discharge pipe 60 through the two flow paths 21, the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60.

The supply of air into the detergent liquid B filled in the beer barrel 1 is controlled by the supply control valve 51 of the air supply pipe 41 and the discharge control valve 6 of the common discharge pipe 60.
4, the opening and closing valve 25a of the inflow side port 20a communicating with the first flow path 20 of the cleaning head 13 and the opening and closing valve 25d of the outflow side port 21b communicating with the second flow path 21 are opened.

Each of the valves 51, 64, 25a, 25d
Is opened, the sterilized air is supplied to the gas supply path 8 of the beer discharge valve 3 through the air supply pipe 41, the supply relay section 50, the cleaning head connection pipe 57, and the first flow path 20 of the cleaning head 13. The air is supplied to the gas supply path 8
Flows into the detergent liquid B in the beer barrel 1 from the opening 7 of the outer cylinder 4.

Then, the air sent into the detergent solution B rises as bubbles b in the detergent solution B as shown in FIG. 9E, and the detergent solution B foams thereby. The outer surface of the down tube 5 and the inner surface of the barrel are subjected to bubbling cleaning.

The air that has risen as bubbles b in the detergent liquid B accumulates in the space above the detergent liquid level in the barrel, and the air has a reduced internal pressure due to the supply of air into the detergent liquid B. As a result of the ascent, it flows into the down tube 5 from its tip, and the second flow path 21 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60
Through the outlet of the discharge pipe 60.

That is, in the bubbling cleaning, the detergent liquid B is introduced into the beer barrel 1 from the gas supply path 8 of the beer discharging valve 3 while discharging the gas in the barrel through the down tube 5 of the beer discharging valve 3. Pour the detergent liquid B into the barrel
, And then the detergent solution B
The air sent from the gas supply path 8 becomes bubbles in the detergent liquid B while sending air into the barrel and discharging air remaining in the space above the detergent liquid level in the barrel via the down tube 5. The outer surface of the down tube 5 and the inner surface of the barrel are cleaned by the bubbling of the detergent liquid B caused by the rising.

In this bubbling cleaning, the gas supply path 8 of the beer discharge valve 3 communicates with the beer barrel 1 at the base of the base 2 of the beer barrel 1 through the opening 7 of the outer cylinder 4. Air bubbles sent into the detergent liquid B in the beer barrel 1 from the supply path 8 mainly rise around the down tube 5, and the detergent liquid B foams more vigorously around the down tube 5.

Therefore, this bubbling cleaning does not have a sufficient cleaning effect on the inner surface of the barrel, but since the cleaning effect on the outer surface of the down tube 5 is high, the outer surface of the down tube is well cleaned.

In the main cleaning, since the inside of the beer barrel 1 is cleaned by both the jet cleaning having a high cleaning effect on the inner surface of the barrel and the bubbling cleaning having a high cleaning effect on the outer surface of the down tube, the inner surface of the barrel is down. Both the outer surface of the tube 5 and the outer surface can be cleaned well.

After performing the bubbling cleaning, the supply control valve 51 of the air supply pipe 41 and the discharge control valve 62 of the detergent liquid discharge pipe 58 are opened and the communication with the second flow path 21 of the cleaning head 13 is performed. Inflow side port 21a
And the opening / closing valve 25b of the outlet 20b communicating with the first flow path 20 are opened, and the detergent liquid B in the beer barrel 1 is discharged.

Although the flow path for discharging the detergent liquid is not shown, only the discharge flow path for the detergent liquid is different from the above-described flow path for discharging the residual beer, and the supply flow path for the sterilizing air is set for discharging the residual beer. The sterilized air is supplied to the down tube 5 of the beer discharge valve 3 through the air supply pipe 41, the supply relay section 50, the cleaning head connection pipe 57, and the second flow path 21 of the cleaning head 13. The beer barrel 1 is supplied from the tip of the down tube 5 into the beer barrel 1, and the detergent B in the beer barrel 1 is supplied to the gas supply path 8 of the beer discharge valve 3 by the air pressure. The liquid flows into the opening 7 and flows through the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the detergent liquid discharge pipe 58.
, And is returned to the detergent liquid tank 48.

The detergent solution B in the detergent solution tank 48 is
The liquid temperature, detergent concentration and degree of contamination are continuously measured,
The liquid temperature and the detergent concentration are adjusted so as to be substantially constant by a temperature control device and a concentration adjusting device (not shown), and are replaced with a fresh detergent solution every time the degree of contamination reaches a predetermined level.

After the main cleaning by the jet cleaning and the bubbling cleaning is performed, and after the detergent liquid B in the beer barrel 1 after the bubbling cleaning is discharged, the hot water cleaning, the rinsing cleaning, and the steam sterilization are sequentially performed by the jet cleaning. Perform by washing.

FIGS. 10A and 10B are flow charts for hot water washing, rinsing washing, and steam sterilization, respectively. FIG. 10F shows a flow path for hot water washing, and FIG. 10G shows a flow path for rinsing washing. (H) shows the flow path at the time of steam sterilization.

The hot water washing is performed by the supply control valve 51 of the air supply pipe 41, the supply control valve 54 of the first hot water supply pipe 44, and the discharge control valve 6 of the common discharge pipe 60.
4, the opening / closing valve 25c of the inflow side port 21a communicating with the second flow path 21 of the cleaning head 13 and the opening / closing valve of the outflow side port 20b communicating with the first flow path 20 are opened.

Each of the valves 51, 54, 64, 25c,
When 25b is opened, the first hot water C sent from the first hot water tank 49 by the pump 49a is supplied to the supply relay section 50 via the first hot water supply pipe 44, and the sterilizing air is supplied to the air supply pipe 41. The air is mixed into the first hot water in the supply relay unit 50 through the supply relay unit 50, and the first hot water containing air bubbles is supplied from the supply relay unit 50 to the cleaning head connection. The beer is supplied into the down tube 5 of the beer discharge valve 3 through the pipe 57 and the second flow path 21 of the cleaning head 13.

Then, the first warm water supplied into the down tube 5 is blown out into the beer barrel 1 from the tip of the down tube 5, and as shown by an arrow in FIG. It flows down the tube outer surface to clean the barrel inner surface and the down tube outer surface. In this case, in this embodiment, since air is mixed into the first hot water, it is possible to perform effective hot water cleaning using hot water containing air bubbles.

The first warm water stored in the beer barrel 1 is
The gas flows into the gas supply path 8 of the beer discharge valve 3 from the opening 7 of the outer cylinder 4, and flows through the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60. Then, it is discharged to the drain 61.

The rinsing is performed by the supply control valve 51 of the air supply pipe 41 and the supply control valve 55 of the second hot water supply pipe 45, the discharge control valve 63 of the rinse drain discharge pipe 59, and the second control of the cleaning head 13. The opening / closing valve 25c of the inflow side port 21a communicating with the flow path 21 and the opening / closing valve of the outflow side port 20b communicating with the first flow path 20 are opened.

Each of the valves 51, 55, 63, 25c,
When 25b is opened, second hot water (rinse water), which is fresh hot water supplied from a supply source (not shown), is supplied to the supply relay unit 50 via the second hot water supply pipe 45, and
Bactericidal air is supplied to the supply relay unit 50 via the air supply pipe 41, and air is mixed with the pre-wash water in the supply relay unit 50, and the second hot water containing bubbles is
The beer is supplied from the supply relay section 50 into the down tube 5 of the beer discharge valve 3 through the cleaning head connection pipe 57 and the second flow path 21 of the cleaning head 13.

Then, the second hot water supplied into the down tube 5 is jetted into the beer barrel 1 from the tip of the down tube 5, and as shown by an arrow in FIG. It flows down the tube outer surface to clean the barrel inner surface and the down tube outer surface. In this case, in this embodiment, since air is mixed into the second warm water, it is possible to perform effective rinsing with warm water containing air bubbles.

Further, the second warm water, ie, the rinsing waste water accumulated in the beer barrel 1 is supplied to the gas supply passage 8 of the beer discharge valve 3.
Into the first hot water tank 49 through the first flow path 20 of the cleaning head 13, the cleaning head connection pipe 67, the discharge relay section 65, and the rinse drain discharge pipe 59. The first warm water C discharged and used for the warm water washing
It is stored as. The temperature of the first hot water C stored in the first hot water tank 49 is continuously measured and adjusted by a temperature control device (not shown) so that the temperature is substantially constant.

[0107] The steam sterilization is performed by the steam supply pipe 4
6, the discharge control valve 64 of the common discharge pipe 60, the open / close valve 25c of the inflow-side port 21a communicating with the second flow path 21 of the cleaning head 13, and the first flow path 20. Opening / closing valve 25b of the outlet side port 20b
And open.

Each of the valves 56, 64, 25c, 25b
Is opened, steam supplied from a supply source (not shown) is supplied to the steam supply pipe 46, the supply relay section 50, the cleaning head connection pipe 57, and the second flow path 2 of the cleaning head 13.
1, the steam is supplied into the down tube 5 of the beer discharge valve 3, and the steam is ejected from the tip of the down tube 5 into the beer barrel 1, and as shown by an arrow in FIG. 1 and the entire barrel is steam sterilized, including the outer surface of the downtube.

The steam spouted into the beer barrel 1 flows into the gas supply passage 8 of the beer discharge valve 3 from the opening 7 of the outer cylinder 4 together with the hot water dripped by the temperature drop and accumulated in the barrel. The first flow path 20 of the cleaning head 13,
The liquid is discharged to the drain 61 through the cleaning head connection pipe 67, the discharge relay section 65, and the common discharge pipe 60.

After performing the above-mentioned steam sterilization,
Although not shown, sterilizing air is supplied into the beer barrel 1 in the same manner as the above-described residual beer discharge, and the residual steam and hot water in the barrel are discharged, and the cleaning of the beer barrel 1 is completed.

The washed beer barrel 1 is conveyed to a beer filling line of a beer manufacturing factory, where the barrel is filled with draft beer and shipped. This beer filling is not shown, but the beer barrel 1 is turned upside down and the mouthpiece 2 is directed downward, and the beer discharge valve 3 is connected to the gas supply path 8 and the down tube 5 with the exhaust path and the beer supply path, respectively. A beer filling head having a beer is connected to open the gas valve and the beer valve of the beer discharge valve 3, and in this state, the gas in the keg is discharged from the down tube 5 of the beer discharge valve 3 and the filling. Draft beer is supplied to the beer supply path of the filling head while being discharged through the exhaust path of the head, and the beer is injected into the barrel from the gas supply path of the beer discharge valve 3.

In addition, although not shown, the beer barrel 1 is placed with the base 2 facing upward and the draft beer is poured out from the beer barrel 1 into a beer hall.
A gas supply path connected to the gas supply path 8 and the down tube 5 are connected to a discharging head having a beer flow path, respectively, and the gas valve and the beer valve of the beer discharging valve 3 are opened. The beer delivery gas is supplied to the gas flow path of the pouring head, and the gas is supplied to the space above the beer in the keg via the gas supply path of the beer discharging valve 3, and the gas pressure is applied. It is performed by letting out the beer in the keg through the down tube 5 of the beer discharging valve 3 and the beer flow path of the discharging head.

A gas cylinder is connected to the gas flow path of the pouring head via a gas hose. When the pouring head is connected to the beer pouring valve of the beer barrel, the valve of the gas cylinder is opened. When opened, the beer delivery gas (carbon dioxide gas) is supplied to the space above the beer in the barrel via the gas flow path of the pouring head and the gas supply path of the beer pouring valve. In addition, a beer outlet pipe connected to a beer outlet cock through a beer cooler is connected to the beer flow path of the head for outlet, and when the beer outlet cock is opened, the beer in the barrel is opened. The gas flows into the down tube 5 of the beer discharging valve 3 by gas pressure, and is discharged from the cock through the beer flow path and the beer discharging pipe of the discharging head.

As described above, the beer barrel cleaning method according to the above-described embodiment includes pre-washing performed in a state where the beer barrel 1 is inverted,
Among the main washing, hot water washing, and rinsing washing, the main washing is performed by spraying a detergent liquid into the barrel via the down tube 5 of the beer discharge valve 3 of the beer barrel 1 and collecting the detergent in the barrel. While the liquid is being discharged from the gas supply passage 8 of the beer discharge valve 5, the inner surface of the barrel and the outer surface of the down tube are washed with a detergent liquid ejected from the tip of the down tube 5 and flowing along the inner surface of the barrel and the outer surface of the down tube. Jet washing and injecting a detergent liquid into the keg from the gas supply path 8 of the beer discharge valve 3 while discharging gas in the keg through the down tube 3 of the beer discharge valve 3 and adding the detergent into the keg. After the liquid is filled, air is sent into the detergent liquid from the gas supply path 8 and air collected in the space above the detergent liquid in the barrel is discharged through the down tube 5. However, the air supplied from the gas supply path 8 rises as bubbles in the detergent solution and rises as bubbles, so that the detergent solution foams and the bubbling washing for washing the outer surface of the down tube and the inner surface of the barrel is performed. .

According to this cleaning method, the main cleaning in the beer barrel 1 is not sufficiently effective in cleaning the outer surface of the down tube, but the jet cleaning in which the cleaning effect on the inner surface of the barrel is high and the cleaning effect on the inner surface of the barrel are sufficient. Although it is not always possible to clean the outer surface of the down tube, it is performed by performing both the bubbling and cleaning, which has a high effect of cleaning the outer surface of the down tube.

Further, in the cleaning method of the above embodiment, since air is mixed in the detergent liquid supplied to the down tube 5 of the beer discharge valve 3 in the jet cleaning, the detergent liquid jetted into the barrel is used. Can be enhanced by the mixed air to enhance the cleaning effect on the inner surface of the barrel by the jet cleaning and the cleaning effect on the outer surface of the down tube to some extent.

Further, the beer barrel cleaning device of the above embodiment is
The beer discharge valve 3 of the beer barrel 1 has first and second flow paths 20 and 21 respectively connected to the gas supply path 8 and the down tube 5 of the beer discharge valve 3 and these flow paths 20. , 21 are connected to the cleaning head 13 having two openings 20a, 20b and 21a, 21b, respectively, and in this state, the second flow of the cleaning head 13 is Jet cleaning is performed by supplying a detergent liquid to a supply port 21a communicating with the passage 21 and discharging the detergent liquid from a discharge port 20b communicating with the first flow path 20. 40, the first cleaning head 13
The detergent liquid is supplied to the supply-side port 20a communicating with the flow path 20 of the first and the discharge-side ports 21 communicating with the second flow path 21.
b, the gas in the barrel is discharged, and then the first flow path 20
The bubbling cleaning is performed by supplying air to a supply side opening 20a communicating with the second passage 21 and discharging the air from a discharge side opening 21b communicating with the second flow path 21. If this is the case, the jet cleaning and the bubbling cleaning can be performed continuously.

Further, in the cleaning apparatus of the above embodiment, air is mixed into the supply / discharge means 40 into the detergent liquid supplied to the supply port 21a communicating with the second flow path 21 of the cleaning head 13. Means (in the above embodiment, the supply relay unit 50
In which the supply air from the air supply pipe 41 is mixed with the detergent liquid supplied from the detergent liquid supply pipe 43), the detergent supplied to the down tube 5 of the beer discharge valve 3 during the jet washing described above. By mixing air into the liquid, the effect of cleaning the inner surface of the barrel by jet cleaning can be enhanced, and the effect of cleaning the outer surface of the down tube can be enhanced to some extent.

Further, in the cleaning apparatus of the above embodiment, the first and second flow paths 2 of the cleaning head 13 are provided.
Two mouths 20a, 20b, 2 each communicating with 0, 21
Valves 1a and 21b for opening and closing their mouths, respectively
5a, 25b, 25c, and 25d, each opening 20a, 20b, 21a, 21b of the cleaning head 13 is provided.
The flow path between the liquid and the supply / discharge means 40 is selectively shut off at the port, and the detergent liquid supplied from the supply system of the supply / discharge means 40 to the supply side ports 20a and 21a of the cleaning head or A discharge side port 20 in which a part of the air communicates with the first or second flow path 20, 21 whose port communicates.
The detergent liquid or air supplied to the cleaning head 13 can be efficiently introduced into the beer barrel 1 by preventing the detergent liquid or air supplied to the cleaning head 13 from leaking from the b and 21b to the discharge system side of the supply and discharge means 40.

In the cleaning method of the above embodiment, the main cleaning of the beer barrel 1 is performed in the order of bubbling cleaning after jet cleaning, but the main cleaning may be performed in the order of jet cleaning after bubbling cleaning. Good.

[0121]

According to the method for cleaning a beer barrel of the present invention, the main cleaning of a beer barrel is performed by jet cleaning having a high cleaning effect on the inner surface of the barrel.
By performing both the bubbling cleaning, which has a high cleaning effect on the outer surface of the down tube, the inner surface of the barrel and the outer surface of the down tube are effectively cleaned. Both can be washed well.

Further, in the cleaning method of the present invention, when air is mixed into the detergent liquid supplied to the down tube of the beer discharging valve in the jet cleaning,
Bubbling of the detergent liquid jetted into the barrel can be promoted by the mixed air to enhance the cleaning effect on the inner surface of the barrel by the jet cleaning and also enhance the cleaning effect on the outer surface of the down tube to some extent.

The beer keg cleaning apparatus of the present invention comprises:
A cleaning head having first and second flow paths respectively connected to a gas supply path and a down tube of a beer discharge valve of a beer barrel and having two mouths respectively communicating with these flow paths. The cleaning head is connected to the beer discharge valve, and a supply or discharge means supplies a detergent liquid or air to a predetermined opening of the cleaning head and a detergent liquid or barrel from a predetermined opening. Since the internal gas and air are discharged, the jet cleaning and the bubbling cleaning can be performed continuously.

In the cleaning apparatus of the present invention, the supply / discharge means may be provided with a means for mixing air into a detergent liquid supplied to a supply side port communicating with the second flow path of the cleaning head. In addition, air is mixed into the detergent liquid supplied to the down tube of the beer discharge valve at the time of the jet washing, whereby the washing effect of the inner surface of the barrel by the jet washing and the washing effect of the outer surface of the down tube can be enhanced to some extent.

Further, in this cleaning apparatus, if each of two ports communicating with the first and second flow paths of the cleaning head is provided with a valve for opening and closing the port,
Detergent supplied to the supply-side opening of the cleaning head from the supply system of the supply / discharge means by selectively blocking the flow path between each opening of the cleaning head and the supply / discharge means at the opening. A part of the liquid or air is prevented from leaking from the discharge side port communicating with the first or second flow path with which the port communicates to the discharge system side of the supply / discharge means, and supplied to the cleaning head. The used detergent liquid or air can be efficiently introduced into the barrel.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a beer keg cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of a cleaning head of the beer barrel cleaning device.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view of a beer barrel to be washed.

FIG. 5 is an enlarged sectional view of a beer discharging valve of the beer barrel.

FIG. 6 is a sectional view showing a state where the cleaning head is connected to the beer discharging valve.

FIG. 7 is a diagram showing a washing process of a beer barrel.

FIG. 8 is a flow chart of each of the remaining beer discharge and the pre-wash.

FIG. 9 is a flow chart of the jet cleaning, the detergent liquid injection, and the bubbling cleaning in the main cleaning.

FIG. 10 is a flow chart for each of hot water washing, rinsing washing, and steam sterilization.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Beer barrel 2 ... Base 3 ... Beer discharge valve 5 ... Beer delivery down tube 8 ... Gas supply path 13 ... Cleaning head 20 ... 1st flow path 21 ... 2nd flow path 20a, 21a ... Supply side Mouth portions 20b, 21b: discharge side mouth portion 40: supply / discharge means

Claims (5)

[Claims] A base is provided at the center of the upper surface of the barrel, and the base is provided with a gas supply passage communicating with the inside of the barrel at the base of the base, and is connected to the inside of the barrel at a position near the bottom of the barrel. A method for cleaning the inside of a beer barrel equipped with a beer discharge valve having a beer delivery down tube and a pre-wash, main cleaning performed in a state where the beer barrel is inverted,
Among the washings of hot water washing and rinsing washing, the main washing is performed by discharging the detergent liquid into the barrel via the down tube of the beer discharging valve and discharging the detergent liquid in the barrel to the beer discharging valve. A jet cleaning method for cleaning the inner surface of the barrel and the outer surface of the down tube with a detergent liquid ejected from the tip of the down tube and flowing along the inner surface of the barrel and the outer surface of the down tube while discharging from the gas supply path; Filling the barrel with the detergent liquid by injecting the detergent liquid into the barrel from the gas supply path of the beer discharge valve while discharging through the down tube of the discharge valve,
Thereafter, air sent from the gas supply path is supplied to the detergent solution while air is supplied into the detergent liquid from the gas supply path and air collected in a space above the detergent liquid level in the barrel is discharged through the down tube. A method of cleaning a beer barrel, comprising performing both bubbling cleaning for cleaning the outer surface of the down tube and the inner surface of the barrel by bubbling of the detergent liquid by rising as bubbles in the liquid. 2. The method for cleaning a beer barrel according to claim 1, wherein air is mixed into the detergent liquid supplied to the down tube during the jet cleaning. 3. An apparatus for cleaning the interior of a beer barrel by the cleaning method according to claim 1, wherein the cleaning head is connected to a beer discharging valve of the beer barrel, a detergent liquid, air, and the like. Wherein the cleaning head includes a first flow path connected to a gas supply path of the beer discharge valve, and a second flow path connected to a down tube of the beer discharge valve. And a supply side and a discharge side, which communicate with the first flow path.
And two outlets on the supply side and the discharge side communicating with the second flow path. The supply / discharge means comprises: a second flow path of the cleaning head during the jet cleaning. The detergent liquid is supplied to the supply side port communicating with the
Discharging the detergent solution from a discharge side opening communicating with the flow path of the first cleaning head;
Supplying the detergent liquid to the supply-side port communicating with the flow path of the above, discharging the gas in the barrel from the discharge-side port communicating with the second flow path, and thereafter supplying the detergent liquid to the first flow path An apparatus for cleaning a beer barrel, wherein a detergent liquid is supplied to a mouth and air is discharged from a discharge-side mouth communicating with the second flow path. 4. A cleaning apparatus according to claim 1, wherein said supply / discharge means includes means for mixing air into a detergent liquid supplied to a supply side port communicating with a second flow path of said cleaning head. 4. The apparatus for cleaning beer barrels according to 3. 5. The cleaning head according to claim 3, wherein each of two openings communicating with the first and second flow paths is provided with a valve for opening and closing the opening.
The beer keg cleaning apparatus according to claim 1.