JP6467162B2 - Beer barrel - Google Patents

Description

  The present invention relates to a beer barrel provided with a siphon tube.

  A beer barrel mainly used as a beer filling container includes a siphon tube for pouring beer in the barrel by gas pressure. 4 is an external view showing an example of a beer barrel, FIG. 5 is a sectional view of a siphon tube mounting portion in a conventional beer barrel, and FIG. 6 is an enlarged view of a part of FIG.

  As shown in FIGS. 4 and 5, the siphon tube 20 is inserted into the barrel body 1 from the neck portion 10 provided at the center of the upper surface 2 of the barrel body 1 and is attached to the neck portion 10 by screw engagement. ing.

  The neck portion 10 is composed of a cylindrical member 11 arranged in a posture standing vertically to the center portion of the upper surface 2 of the barrel body 1, and has a lower end at an opening provided in the center portion of the upper surface 2 of the barrel body 1. The perimeter of it is welded. An internal thread 12 is formed on the inner peripheral surface of the neck portion 10 from the upper end to a predetermined depth, and the inner peripheral surface is positioned at a position lower than the lower end of the internal thread 12, for example, the lower end portion of the neck portion 10. An annular seal material receiver 13 protruding from the surface is formed.

  As shown in FIGS. 5 and 6, the siphon tube 20 is lowered to a neck engaging member 21 that is attached to the neck portion 10 by screw engagement, and from the neck engaging member 21 to the vicinity of the barrel bottom in the barrel body 1. Tube member 22 formed.

  The neck engaging member 21 is a cylindrical member having a height larger than the height of the neck portion 10, and a lower end side portion of the neck engaging member 21 is protruded below the neck portion 10 into the neck portion 10. Arranged.

  The neck engaging member 21 is provided with a male screw 23 that engages with the female screw 12 of the neck portion 10 on the outer peripheral surface of the upper end portion, and on the outer periphery near the intermediate portion in the height direction, An annular seal material contact surface 24 is formed between the seal material receiver 13 of the neck portion 10 and a seal material 34 made of a rubber ring.

  Further, inside the upper end portion of the neck engaging member 21 is formed a head connecting portion 25 for selectively connecting the respective heads for filling, washing, dispensing, etc. (not shown). A gas valve seat 26 is formed below the head connecting portion 25. A plurality of vent holes 27 are provided on the peripheral surface of the neck engaging member 21 that protrudes downward from the neck portion 10.

  The tube member 22 is made of a pipe material, and is arranged by inserting the upper end side portion into the neck engaging member 21 from the lower end side. An annular gas valve member 28 that is in contact with the gas valve seat 26 of the neck engaging member 21 is fitted to the upper end of the tube member 22. The gas valve member 28 is pressed against the gas valve seat 26 by a coil spring 29 interposed between the lower end portion of the neck engaging member 21 and the upper end portion of the tube member 22.

  Further, a downward beer valve seat 30 is formed on the gas valve member 28, and a beer valve member 31 abutting on the beer valve seat 30 is vertically located inside the upper end portion of the tube member 22. Is inserted to be movable. The beer valve member 31 is pressed against the beer valve seat 30 by a coil spring 32 disposed in the tube member 22.

  The siphon tube 20 is mounted by inserting a tube member 22 into the barrel body 1 from the neck portion 10, and engaging the neck engaging member 21 with the neck portion 10 and engaging the male screw 23 with the female screw 12. .

  When the siphon tube 20 is mounted by screwing the neck engaging member 21 into the neck portion 10, the sealing material 34 is interposed between the sealing material receiver 13 of the neck portion 10 and the sealing material contact surface 24 of the neck engaging member 21. A compression force is applied between the neck portion 10 and the neck engaging member 21 and the neck engaging member 21 is sealed by the repelling force of the sealing member 34 as shown in FIG. The upward thread surface of the male thread 21 of 21 is pressed against the downward thread surface of the female thread 12 of the neck portion 10, and the mounting state of the siphon tube 20 is maintained by the frictional force of both thread surfaces.

  The head connecting portion 25 of the neck engaging member 21 is provided with locking projections 33 for the heads at a plurality of locations on the peripheral surface, for example, two locations facing each other. The engagement member 21 is screwed by a screwing tool (not shown) having a contact portion with the side surface of the head locking projection 33.

  The beer is poured out from the beer barrel by connecting the beer pouring head to the head connecting portion 25 of the siphon tube 20. The beer pouring head has a plurality of convex portions corresponding to the head locking projections 33, and is fitted into the head connecting portion 25 and rotated in the circumferential direction so that the convex portions are used for head locking. By entering the lower surface of the projection 33, the projection 33 is locked while being connected to the head connection portion 25.

  The beer pouring head includes a gas supply path for sending carbon dioxide gas from a gas cylinder into the siphon tube 20, and a beer feeding path for supplying beer poured from the beer barrel via the siphon tube 20 to the beer server. The gas valve opening means for pushing the gas valve member 28 of the siphon tube 20 and the beer valve opening means for pushing the beer valve member 31 of the siphon tube 20 are provided.

  When the gas valve is opened by pushing the gas valve member 28, the carbon dioxide gas from the gas cylinder is barreled between the beer pouring head, the neck engaging member 21 and the tube member 22, and the vent 27. It is supplied into the main body 1. When the beer valve is opened by pushing the beer valve member 31, beer that has flowed into the siphon tube 20 due to gas pressure is supplied to the beer server via the beer dispensing head.

  In addition, empty beer barrels that have consumed the internal beer are collected and sent to a beer filling factory, and after washing and steam sterilization are performed by connecting a washing head to the head connection portion 25 of the siphon tube 20. The beer filling head is connected to the head connection portion 25 of the siphon tube 20, and the barrel body 1 is refilled with beer.

Japanese Patent No. 3920414

  By the way, in the beer barrel, the sealing material 34 sandwiched between the sealing material receiver 13 of the neck portion 10 and the sealing material contact surface 24 of the siphon tube 20 is subjected to permanent deformation caused by a compressive force applied continuously. The material gradually deteriorates due to repeated heating at the time of steam sterilization, and the repulsive force of the sealing material 34 becomes weak accordingly.

  In the conventional beer barrel, the mounting state of the siphon tube 20 is held by pressing the screw surfaces of the female screw 12 of the neck portion 10 and the male screw 23 of the neck engaging member 21 by the repulsive force of the sealing material 34. When the repulsive force of the sealing material 34 is weakened, not only the sealing effect by the sealing material 34 is lowered, but also the pressing force between the thread surfaces is lowered, and the siphon tube 20 is loosely attached.

  This reduction in the repulsive force of the sealing material 34 can be compensated by performing additional tightening to increase the screwing force of the neck engaging member 21 to the neck portion 10, but if additional tightening of the siphon tube 20 is performed, The sealing material 34 is more strongly compressed, and the deterioration of the sealing material 34 further proceeds. For this reason, in the conventional beer barrel, the sealing material 34 is likely to deteriorate, and the sealing material 34 has to be frequently replaced.

  The present invention provides a beer barrel that can maintain the mounting state of a siphon tube without depending on the repulsive force of the sealing material, reduce the load applied to the sealing material, and suppress the progress of the deterioration of the sealing material. It is intended to do.

The beer barrel of this invention
Provided on the upper surface of the barrel main body, on the inner peripheral surface, a female thread is provided over a predetermined depth from the upper end, and a neck portion in which a seal material receiver is formed below the lower end of the female screw,
A first male screw that engages with the female screw of the neck portion is provided, and is opposed to the seal material receptacle of the neck portion from above, and a seal material holder that sandwiches the seal material between the seal material receptacle. A siphon tube having a neck engaging member formed with a contact surface, and screwed into the neck portion of the neck engaging member;
A second male screw that engages with the female screw of the neck portion on the outer peripheral surface, and a locking member that is screwed into the neck portion and pressed against the upper surface of the neck engaging member;
Equipped with a,
A head connecting portion for inserting a beer extraction head is formed on the inner peripheral side by overlapping the neck engaging member and the locking member .

  According to the beer barrel of this invention, the mounting state of the siphon tube to the neck portion is maintained without depending on the repulsive force of the sealing material, the load applied to the sealing material is reduced, and the deterioration of the sealing material is progressed. Can be suppressed.

Sectional drawing of the siphon tube mounting part of the beer barrel which shows one Example of this invention. FIG. 2 is an enlarged view of a part of FIG. 1. The schematic diagram which shows the locking principle of the neck engaging member by a locking member. The external view which shows an example of a beer barrel. Sectional drawing of the siphon tube mounting part in the conventional beer barrel. FIG. 6 is an enlarged view of a part of FIG. 5.

  An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, the same reference numerals are given to the components corresponding to the respective parts of the conventional beer barrel shown in FIGS. 5 and 6, and the description of the same components is omitted.

  In the beer barrel of this embodiment, the neck portion 10 is composed of a cylindrical member 11 that is the same general-purpose product as that used in a conventional beer barrel, and extends from the upper end to a predetermined depth on the inner peripheral surface. A female screw 12 is provided, and a seal material receiver 13 is formed at a position below the lower end of the female screw 12.

  On the other hand, the siphon tube 20a is provided on the outer peripheral surface with a first male screw 23a that engages with the female screw 12 of the neck portion 10, and is opposed to the sealing material receiver 13 of the neck portion 10 from above, and the sealing material It has a neck engaging member 21a formed with a sealing material abutting surface 24 for sandwiching the sealing material 34 between the receiving member 13 and a tube member 22 lowered from the neck engaging member 21a.

  In the siphon tube 20 a, the neck engaging member 21 a has a height smaller than that of the neck engaging member 21 of the conventional siphon tube 20. That is, the neck engaging member 21a is such that the height of the portion on the upper end side of the seal material abutting surface 24 is smaller than that of the conventional neck engaging member 21, and the first male screw 23a is the neck engaging member. From the upper end of the member 21a, it is provided over about half the height of the portion of the neck portion 10 where the female screw 12 is provided.

  Further, inside the upper end portion of the neck engaging member 21a, a head receiving portion 25a for selectively connecting respective heads for filling, cleaning, dispensing, etc. (not shown) is provided. The depth is about half the depth of the head connecting portion of the combined member.

  The other part of the neck engaging member 21a is the same as that of the conventional neck engaging member 21, and the other components of the siphon tube 20a, that is, the tube member 22, gas and beer valves. These components are the same general-purpose products as those of the conventional siphon tube 20.

  In the beer barrel of this embodiment, the siphon tube 20a is configured such that the tube member 22 is inserted into the barrel body 1 from the neck portion 10, the neck engaging member 21a is engaged with the neck portion 10, and the male screw 23a is engaged with the female screw 12. It is installed by screwing.

  The neck engaging member 21a is provided with screwing tool engaging portions 35 formed of convex portions or concave portions at a plurality of locations on the inner peripheral surface (the peripheral surface of the head receiving portion 25a), for example, two locations facing each other. The neck engaging member 21a is screwed into the neck portion 10 with a screwing tool (not shown).

  Further, when the neck engaging member 21a is screwed into the neck portion 10, a compressive force that can exert a sufficient sealing effect is applied to the sealing material 34 between the sealing material receiver 13 and the sealing material contact surface 24. Use a screwing force like this.

  Furthermore, the beer barrel of this embodiment has a second male screw 37 that engages with the female screw 12 of the neck portion 10 on the outer peripheral surface, and a second male screw 36 that engages with the female screw 12 within the neck portion 10. The locking member 36 is pressed against the upper surface of the neck engaging member 21a by being screwed.

  The locking member 36 is a ring-shaped member having the same height as the difference in height between the neck engaging member 21a and the conventional neck engaging member 21. A second male screw 37 is formed throughout.

Also, the space in the locking member 36 is an insertion portion 38 of the head to be inserted into the head receiving portion 25a of the neck engaging member 21a, by the receiving portion 25 a and a head insertion portion 38 of the head The connecting portion of each head is formed.

  Further, on the peripheral surface of the head insertion portion 38 (inner peripheral surface of the locking member 36), a head locking projection 39 having the same shape as the conventional head locking projection 33 is formed at a plurality of locations, for example, two locations facing each other. Is provided.

Then, the screwing of the locking member 36 to the neck portion 10 is performed using a screwing tool (not shown) similarly to the screwing of the conventional neck engaging member 21. Each of the heads has a plurality of convex portions corresponding to the head locking projections 39, and is fitted into a head connection portion formed by the head receiving portion 25a and the head insertion portion 38 to surround the head. By rotating the projection in the direction and entering the lower surface of the projection 39 for locking the head, the projection is locked while being connected to the head connection portion.

  As described above, the beer barrel of this embodiment is provided on the upper surface of the barrel main body 1, and the internal thread 12 is provided on the inner peripheral surface from the upper end to a predetermined depth, and below the lower end of the female screw 12. A neck portion 10 on which a seal material receiver 13 is formed, and a first male screw 23a that engages with the female screw 12 of the neck portion 10 are provided, and is opposed to the seal material receiver 13 of the neck portion 10 from above. It has a neck engaging member 21a formed with a sealing material abutting surface 24 for sandwiching a sealing material 34 between the sealing material receiver 13 and this neck engaging member 21a is screwed into the neck portion 10 and mounted. A siphon tube 20a and a second male screw 37 that engages with the female screw 12 of the neck portion 10 are provided on the outer peripheral surface. The second male screw 37 is screwed into the neck portion 10 and pushed onto the upper surface of the neck engaging member 21a. And a locking member 36 which kicked.

  Therefore, according to this beer barrel, the mounting state of the siphon tube 20a is maintained without depending on the repulsive force of the sealing material 34, the load applied to the sealing material 34 is reduced, and the progress of deterioration of the sealing material 34 is suppressed. can do.

That is, FIG. 3 (a) shows an engagement state of the female screw 12 and the first male screw 23a when screwed neck engaging member 21a to the neck portion 10, this time, the repulsive force of the seal member 34 The upward thread surface of the first male screw 23a of the neck engaging member 21a is pressed against the downward thread surface of the female thread 12 of the neck portion 10 by P1.

  However, after the neck engaging member 21a is screwed into the neck portion 10, when the locking member 36 is further screwed, the locking member 36 is pressed against the upper surface of the neck engaging member 21a.

FIG. 3 (b) shows an engagement state between the female thread 12 and the second external thread 37 and our first male screw 23a of After screwing the locking member 36, locking member 36 is neck engaging member 21a The neck engaging member 21a is pressed downward with a force P2 stronger than the repulsive force P1 of the sealing material 34, and the downward thread surface of the first male screw 23a of the neck engaging member 21a is together are pressed against the upward threaded surface of the female screw 12 of, by its repulsive force P 3, upward thread surface of the second external thread 37 of the locking member 36, the downward thread surface of the internal thread 12 of neck portion 10 Pressed.

  Further, when the neck engaging member 21a is pressed downward by screwing of the locking member 36, the compressive force applied to the sealing material 34 is slightly increased, and the sealing effect by the sealing material 34 is improved.

  The increase in the compressive force applied to the sealing material 34 corresponds to a slight push-down amount of the neck engaging member 21a until the downward thread surface of the first male screw 23a is pressed against the upward thread surface of the female screw 12. When the thread surfaces of the first male screw 23a and the female screw 12 come into contact with each other, an increase in compressive force applied to the sealing material 34 is eliminated, and the sealing effect is kept constant.

  When the locking member 36 is strongly pressed against the neck engaging member 21a, the frictional force between the downward thread surface of the first male screw 23a and the upward thread surface of the female screw 12 and the upward force of the second male screw 37 are increased. Since the neck engaging member 21a and the locking member 36 are locked in a state where they are screwed into the neck portion 10 due to the frictional force between the thread surface and the downward thread surface of the female screw 12, the mounting state of the siphon tube 20a is changed. It can be held without depending on the repulsive force of the sealing material 34.

  Therefore, it is necessary to apply a compressive force that can provide a sufficiently strong repulsive force to the sealing material 34, as in the case of a conventional beer barrel that holds the mounting state of the siphon tube 20 by the repelling force of the sealing material 34 Therefore, the load applied to the sealing material 34 can be reduced, and the progress of the deterioration of the sealing material 34 can be suppressed.

  In addition, according to this beer barrel, the compressive force applied to the sealing material 34 after the downward thread surface of the first male screw 23a of the neck engaging member 21a is pressed against the upward thread surface of the female thread 12 of the neck portion 10. Therefore, an excessive compressive force is not applied to the sealing material 34, and therefore the progress of deterioration of the sealing material 34 can be more effectively suppressed.

  Further, in the beer barrel, the neck engaging member 21a and the locking member 36 are provided with frictional forces between the first male screw 23a and the female screw 12 and the screw surfaces of the second male screw 37 and the female screw 12. Due to the frictional force, the siphon tube 20a is not loosened because it is locked in a state of being screwed into the neck portion 10, and therefore, there is almost no need to retighten like a conventional beer barrel.

  In addition, this beer barrel newly produces two parts, that is, a neck engaging member 21a and a loosening prevention member 36 among the parts constituting the siphon tube 20a, and other components and necks of the siphon tube 20a. Since the part 10 can be manufactured using the same general-purpose product as that used in a conventional beer barrel, it can be obtained at low cost.

  In the above embodiment, the locking member 36 is directly pressed against the upper surface of the neck engaging member 21a. However, the locking member 36 may be pressed against the neck engaging member 21a via a washer member.

  Moreover, the beer barrel of this invention can be utilized not only for beer but also as a filling container for other beverages such as happoshu.

  DESCRIPTION OF SYMBOLS 1 ... Barrel main body, 2 ... Upper surface of barrel, 10 ... Neck part, 12 ... Female screw, 13 ... Sealing material receiver, 20a ... Siphon tube, 21a ... Neck engagement member, 22 ... Tube member, 23a ... First male screw, 24 ... Sealing material contact surface, 25a ... Head connecting portion, 34 ... Sealing material, 35 ... Screwing tool engaging portion, 36 ... Loosening prevention member, 37 ... Second male screw, 38 ... Head insertion portion, 39 ... Head engagement Stop projection

Claims (1)

Provided on the upper surface of the barrel main body, on the inner peripheral surface, a female thread is provided over a predetermined depth from the upper end, and a neck portion in which a seal material receiver is formed below the lower end of the female screw,
A first male screw that engages with the female screw of the neck portion is provided, and is opposed to the seal material receiver of the neck portion from above, and a seal material holder that sandwiches the seal material with the seal material receptacle. A siphon tube having a neck engaging member formed with a contact surface, and screwed into the neck portion of the neck engaging member;
A second male screw that engages with the female screw of the neck portion on the outer peripheral surface, and a locking member that is screwed into the neck portion and pressed against the upper surface of the neck engaging member;
Equipped with a,
A beer barrel in which a head connecting portion for inserting a beer extraction head is formed on an inner peripheral side of the neck engaging member and the locking member that overlap with each other .

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