JP6738615B2 - Fitting maintenance device and fitting maintenance method - Google Patents

Description

The present invention relates to a fitting maintenance device and a fitting maintenance method which are attached to a cap of a barrel container.

A fitting for sending out the beverage from the barrel container is attached to the mouthpiece of the barrel container that stores the beverage such as draft beer (for example, refer to Patent Document 1).

The fitting is a bush that is screwed into the base, a down tube that is arranged inside the bush and extends to the bottom of the barrel container, a gas valve that is arranged between the valve seat and the down tube formed in the bush, and a down tube. Between the beverage valve arranged in the tube, the retaining disc removably attached to the claw portion formed at the lower end of the bush by rotating with respect to the bush, and the gas valve and the retaining disc. And a compression spring that presses the gas valve against the valve seat and presses the retaining disk against the pawl. In the fitting configured in this way, when the gas valve is opened, carbon dioxide gas is sent from the gas flow path between the bush and the down tube into the barrel container, and when the beverage valve is opened, the liquid flow in the down tube is increased. The beverage in the barrel container is delivered from the road.

JP, 09-207994, A

By the way, the gas valve needs to be regularly maintained. Maintenance includes replacement of consumable gas valves and cleaning of parts. To perform such maintenance, it is necessary to disassemble and assemble the fitting. However, since the retaining disc is pressed against the claw portion by the compression spring, the retaining disc cannot be rotated with respect to the bush unless the retaining disc is pressed toward the valve seat side by using a dedicated jig or the like. ..

Since the structure of the fitting differs for each manufacturing company, one fitting maintenance device cannot disassemble and assemble the fittings of a plurality of manufacturing companies for maintenance.

Therefore, an object of the present invention is to provide a fitting maintenance device and a fitting maintenance method that enable maintenance of a plurality of types of fittings.

The inventors analyzed the structure of each fitting manufactured by multiple manufacturing companies and found that the amount of pushing the retaining disc toward the valve seat side in order to allow the retaining disc to rotate with respect to the bush between each fitting. We obtained the knowledge that the height position of pushing in is different.

Therefore, the fitting maintenance device according to the present invention is arranged between a bush screwed to the mouthpiece of a barrel container, a down tube provided inside the bush, and a valve seat and a down tube formed on the bush. A gas valve, and a retaining disc that is detachably attached to a claw formed at the lower end of the bush by rotating the gas valve, and the retaining valve is disposed between the gas valve and the retaining disc. Is a compression spring that presses the retaining disc against the valve seat and the retaining disc against the claw portion, and is a maintenance device for the fitting, which includes a pressing portion that presses the retaining disc toward the valve seat side, and a retaining portion using the pressing portion. And an adjusting unit for adjusting the pressing amount of the disc.

In the fitting maintenance device according to the present invention, when the retaining disc is pushed toward the valve seat side by the pushing portion, the retaining disc is pushed toward the valve seat side, so that the pressing force of the retaining disc against the claw portion by the compression spring is increased. Canceled or relaxed. As a result, the retaining disc can be released from the bush by rotating the retaining disc with respect to the bush and releasing the locking of the retaining disc by the claw portion. Here, as described above, the fitting discs manufactured by a plurality of manufacturing companies differ in the amount of pushing the retaining disc toward the valve seat side so that the retaining disc can rotate with respect to the bush. However, by adjusting the amount of pressing of the retaining disc by the pressing unit for each manufacturing company by the adjusting unit, for each Fitting manufactured by multiple manufacturing companies, the retaining disc is pushed toward the valve seat side and You can rotate the retaining disc to remove it from the pawl.

The pressing part has a fitting on which the fitting is placed so that the claw part faces upward with respect to the valve seat, and an elevating part that elevates and lowers the fitting, and a fitting that is arranged above the elevating part and is elevated by the elevating part. The adjusting unit may adjust the rising height of the fitting by the elevating unit, the head unit contacting only the retaining disc. In this fitting maintenance device, when the fitting which is placed so that the claws face upward with respect to the valve seat is raised by the elevating part, the head part contacts only the retaining disc among the fittings. This prevents the retaining disc from rising. Then, the retaining disc is pushed toward the valve seat side, and the pressing force of the retaining disc against the pawl portion by the compression spring is released or relieved. As a result, the retaining disc can be rotated with respect to the claw portion to remove the retaining disc from the bush. Then, the adjusting unit adjusts the rising height of the fitting by the elevating unit. With this, for each fitting that is manufactured by a plurality of manufacturing companies, the retaining disc can be pushed toward the valve seat side, the retaining disc can be rotated with respect to the pawl portion, and the retaining disc can be removed from the pawl portion.

The elevating unit may include a cylinder fixed to the base and a rod that moves up and down with respect to the cylinder by gas pressure. In this fitting maintenance device, the fitting can be raised and lowered easily and reliably by raising and lowering the rod by gas pressure with respect to the cylinder fixed to the base.

The adjusting unit may include a base-side fixing unit fixed to the base and a rod-side fixing unit fixed to the rod and stopping the rising of the rod by colliding with the base-side fixing unit. .. In the maintenance device for this fitting, the rod-side fixing portion fixed to the rod collides with the base-side fixing portion fixed to the base to stop the rod from rising. Thereby, the rising height of the fitting can be accurately defined. Moreover, since the rod rises due to the gas pressure, it is possible to suppress the impact generated on the base-side fixing portion and the rod-side fixing portion to be small.

Either one of the rod-side fixing portion or the base-side fixing portion may be expandable/contractible toward the other side of the rod-side fixing portion or the base-side fixing portion. In this fitting maintenance device, the rod-side fixing part collides with the base-side fixing part to stop the lifting of the rod, so either one of the rod-side fixing part and the base-side fixing part is fixed on the rod-side. Part or the base-side fixed part is expanded or contracted toward the other side to expand or contract the distance between the rod-side fixed part and the base-side fixed part to easily and reliably adjust the rising height of the fitting. be able to.

In addition, the inventors analyzed the structure of each fitting manufactured by a plurality of manufacturing companies, and found that the positions where the retaining disc was pushed in were different between the respective fittings, and that there were obstacles around the retaining disc. I got the knowledge that there is also. Therefore, in the fitting maintenance device described above, the head portion may include a plurality of protrusions that extend in a rod shape toward the elevating portion and contact the retaining disc. In this fitting maintenance device, since a plurality of bar-shaped projections that extend toward the elevating part are brought into contact with the retaining disc, the head part is disassembled when disassembling or assembling each fitting manufactured by a plurality of manufacturing companies. It becomes easier to make contact with only the retaining disc.

In addition, the head portion may further include a cylindrical cylindrical portion centered on the central axis of the rod, and the plurality of protrusions may extend from the cylindrical portion. In this fitting maintenance device, since the plurality of protrusions extend from the cylindrical portion centering on the center axis of the rod, the wall thickness of the cylindrical portion is reduced, so that the space between the bush and the down tube is reduced. Even if there is another obstacle, the head portion can be prevented from coming into contact with the obstacle.

The elevating part may raise and lower the gas valve. In this fitting maintenance device, when the gas valve is moved up and down by the elevating part, the retaining disc is pushed toward the valve seat by the head part and the gas valve is pushed toward the retaining disc side by the elevating part. As a result, not only the pressing force of the retaining disk on the pawl portion by the compression spring is released or alleviated, but also the pressing force of the gas valve on the valve seat by the compression spring is released or alleviated. This makes it easier to rotate the retaining disc with respect to the claw portion.

Further, the elevating unit may raise and lower the bush. In this fitting maintenance device, when the lifting portion raises and lowers the bush, the head portion pushes the retaining disc toward the valve seat side, releasing or relieving the pressing force of the retaining disc against the pawl portion by the compression spring. To be done. This makes it easier to rotate the retaining disc with respect to the claw portion.

The elevating part may further include a rotating part that rotates the retaining disc with respect to the bush. In this fitting maintenance device, the rotating disc rotates the retaining disc with respect to the bush, whereby the retaining disc can be easily attached to and detached from the bush.

A maintenance method for fittings according to the present invention is a gas valve arranged between a bush screwed into a cap of a barrel container, a down tube provided inside the bush, and a valve seat and a down tube formed on the bush. And a retaining disc that is detachably attached to a claw formed at the lower end of the bush by rotating the bush relative to the bush, and is arranged between the gas valve and the retaining disc. A method of maintaining a fitting including a compression spring that presses a retaining disc against a seat and a retaining disc against a claw portion, and includes a pressing step of pressing the retaining disc toward the valve seat side, and a retaining disc of the retaining step. An adjusting step of adjusting the pressing amount.

In the fitting maintenance method according to the present invention, when the retaining disc is pushed toward the valve seat by the pushing step, the retaining disc is pushed toward the valve seat, so that the pressing force of the retaining disc against the claw portion by the compression spring is increased. Canceled or relaxed. Accordingly, the retaining disc can be released from the bush by rotating the retaining disc with respect to the bush and unlocking the retaining disc from the claw portion. Here, as described above, the fitting discs manufactured by a plurality of manufacturing companies differ in the amount of pushing the retaining disc toward the valve seat side so that the retaining disc can rotate with respect to the bush. However, by adjusting the pressing amount of the retaining disc by the pressing part for each manufacturing company in the adjusting step, for each fitting made by multiple manufacturing companies, the retaining disc is pushed toward the valve seat side and You can rotate the retaining disc to remove it from the pawl.

In the pressing step, the fitting is arranged so that the claw part faces upward with respect to the valve seat, and the fitting is raised, and at the same time, it is prevented from rising above the set height of the retaining disc. The rising height of may be adjusted. In this fitting maintenance method, in the pressing step, when the fitting mounted so that the claw portion faces upward with respect to the valve seat is raised, the fitting disc is prevented from rising above the set height of the taining disc. .. Then, the retaining disc is pushed toward the valve seat side, and the pressing force of the retaining disc against the pawl portion by the compression spring is released or relieved. As a result, the retaining disc can be rotated with respect to the claw portion to remove the retaining disc from the bush. Then, in the adjusting step, the rising height of the fitting in the pressing step is adjusted. With this, for each fitting that is manufactured by a plurality of manufacturing companies, the retaining disc can be pushed toward the valve seat side, the retaining disc can be rotated with respect to the pawl portion, and the retaining disc can be removed from the pawl portion.

According to the present invention, a plurality of types of fittings can be maintained.

It is sectional drawing of the fitting attached to the base of a barrel container. It is a top view of fitting. It is a bottom view of fitting. It is the perspective view which looked at the mounting part of a retaining disc from the lower part. It is the perspective view which looked at the retaining disc from the lower part. It is sectional drawing in the VI-VI line shown in FIG. It is a sectional view showing the state where the retaining disc was pushed in to the valve seat side. FIG. 7 is a cross-sectional view showing a state in which the retaining disc is pushed toward the valve seat side and the gas valve is pushed toward the retaining disc side. It is a transition sectional view in the same cross section as FIG. It is a front view showing a maintenance device of a fitting concerning a first embodiment. It is a front view which shows the state which attached the fitting to the maintenance apparatus of the fitting shown in FIG. It is a front view which shows the state which raised the rod of the raising/lowering part in the maintenance apparatus of the fitting shown in FIG. It is a figure which shows a rotating part, (a) is a top view, (b) is a side view, (c) is a perspective view. It is a figure which shows a head, (a) is a side view, (b) is a front view, (c) is a bottom view. It is a figure which shows an adjustment part, (a) is a top view, (b) is sectional drawing. It is an exploded view of an adjustment part, (a) is a sectional view of a rod side fixed part, (b) is a sectional view of a pedestal side fixed part. It is sectional drawing of other fittings. It is sectional drawing of other fittings. It is sectional drawing of other fittings. It is a front view which shows the maintenance apparatus of the fitting which concerns on 2nd embodiment. It is a front view which shows the state which attached the fitting to the maintenance apparatus of the fitting shown in FIG. FIG. 22 is a front view showing a state in which a rod of an elevating part is raised in the maintenance device for the fitting shown in FIG. 21. It is a figure which shows a rotating part, (a) is a top view, (b) is a side view, (c) is a perspective view.

Hereinafter, preferred embodiments of a fitting maintenance device and a fitting maintenance method according to the present invention will be described in detail with reference to the drawings. In all the drawings, the same or corresponding parts are designated by the same reference numerals. Further, the "fitting maintenance device" and the "fitting maintenance method" are also referred to as "maintenance device" and "maintenance method", respectively.

[First embodiment]
A fitting maintenance device and a fitting maintenance method according to the present embodiment are devices for performing maintenance by disassembling and assembling a fitting for delivering a beverage from a barrel container, which is attached to a mouthpiece of a barrel container that stores a beverage such as draft beer. And method. Therefore, first, the fitting structure will be described.

[Structure of fitting]
FIG. 1 is a sectional view showing a state in which a fitting is attached to the mouthpiece of a barrel container. FIG. 2 is a plan view of the fitting. FIG. 3 is a bottom view of the fitting. FIG. 4 is a perspective view of the mounting portion of the retaining disc as viewed from below. As shown in FIGS. 1 to 4, the fitting 1 is attached to the mouthpiece 101 of the barrel container 100 and is for delivering the beverage from the barrel container. The upward and downward directions of the fitting 1 refer to the upward and downward directions when the fitting is attached to the base 101.

The fitting 1 mainly includes a bush 2, a down tube 3, a beverage valve 4, a liquid passage compression spring 5, a gas valve 6, a stopper 7, a retaining disc 8, and a compression spring 9. Prepare

The bush 2 is a member that is screwed into the base 101. The bush 2 is formed in a cylindrical shape, and a male screw to be screwed into the base 101 is engraved on the outer peripheral surface of the bush 2. On the inner peripheral surface of the bush 2, a pair of locking pieces 2a extending inward in the radial direction at the upper end of the bush 2 in the vertical direction, and a valve seat 2b extending inward in the radial direction at an intermediate portion in the vertical direction of the bush 2. A plurality of claw portions 2c extending inward in the radial direction are formed at the lower end of the bush 2 in the vertical direction. The lower end portion of the bush 2 means not only the lower end of the bush 2 but also the vicinity of the lower end of the bush 2. The pair of locking pieces 2a are arranged at positions facing each other. The valve seat 2b is a portion where the gas valve 6 is pressed, and is formed on the entire inner peripheral surface of the bush 2. The valve seat 2b is directed toward the lower end side of the bush 2 on which the claw portion 2c is formed and the radially inner side of the bush 2. The claw portion 2c is a portion to which the retaining disc 8 is attached. The claw portion 2c is formed in an arc shape along the inner peripheral surface of the bush 2. In the present embodiment, it is assumed that the bush 2 is formed with three claw portions 2c.

The down tube 3 is a member that sends out the beverage in the barrel container 100. The down tube 3 is formed in a linear tube shape that extends linearly. The down tube 3 is arranged inside the bush 2 and extends from the bush 2 to the bottom of the barrel container. The space between the bush 2 and the down tube 3 serves as a gas flow path G for feeding gas into the barrel container 100. The inner space of the down tube 3 serves as a liquid flow path L through which the beverage is delivered from the barrel container 100. An upper end flange portion 3a is formed at an upper end portion in the up-down direction of the down tube 3 and extends outward in the radial direction. A step portion 3b having a smaller inner diameter in the lower portion than in the upper portion is formed in an intermediate portion in the up-down direction of the down tube 3. The step portion 3b is located below the beverage valve 4.

The beverage valve 4 is a member that functions as a valve that opens and closes the liquid flow path L in the down tube 3. The beverage valve 4 is formed in a substantially circular cross section and arranged in the down tube 3.

The liquid channel compression spring 5 is a member that biases the beverage valve 4 upward. The liquid channel compression spring 5 is arranged between the step portion 3 b of the down tube 3 and the beverage valve 4. The liquid flow path compression spring 5 is locked to the step portion 3b to bias the beverage valve 4 upward with respect to the down tube 3.

The gas valve 6 is a member that functions as a valve that opens and closes the gas flow path G between the bush 2 and the down tube 3. The gas valve 6 is formed in an annular shape and is attached to the upper end flange portion 3 a of the down tube 3. It is arranged between the valve seat 2 b and the down tube 3, and is arranged between the down tube 3 and the beverage valve 4.

The gas valve 6 includes a core metal 6a having a shape retaining function of the gas valve 6, and a valve portion 6b having a function as a valve body that opens and closes the gas flow passage G and the liquid flow passage L. The core metal 6a is made of a hard material such as metal. The valve portion 6b is made of a soft material such as rubber. Then, the upper end flange portion 3a is biased upward by the compression spring 9 and the valve portion 6b is pressed against the valve seat 2b, so that the gas passage G is closed. Further, the beverage valve 4 is biased upward by the liquid passage compression spring 5 and the beverage valve 4 is pressed against the valve portion 6b, whereby the liquid passage L is closed.

The stopper 7 is a member that prevents the fitting 1 from coming off the base 101. The stopper 7 includes a fixed portion 7a fixed between the upper end flange portion 3a of the down tube 3 and the gas valve 6, and a protruding portion 7b extending downward from the fixed portion 7a and protruding from the side surface opening 2d of the bush 2. Prepare Therefore, in a normal state, the protruding portion 7b protrudes from the side surface opening 2d, so that the fitting 1 does not come off from the base 101. On the other hand, when the gas valve 6 is pushed down, the protruding portion 7b is retracted into the bush 2 through the side surface opening 2d, and the fitting 1 can be pulled out from the base 101.

FIG. 5 is a perspective view of the retaining disc as seen from below. FIG. 6 is a cross-sectional view taken along line VI-VI shown in FIG. As shown in FIGS. 1 to 6, the retaining disk 8 is a member mounted on the claw portion 2 c of the bush 2. The retaining disc 8 is formed in a disc shape having an opening in the center, and is rotated with respect to the bush 2 to be detachably attached to the claw portion 2c. The direction in which the retaining disc 8 is rotated with respect to the bush 2 in order to attach/detach the retaining disc 8 to/from the claw portion 2c is referred to as a rotation direction A (see FIG. 3).

The retaining disk 8 includes a flat plate portion 8a, a locking recess 8b that is recessed on one side of the flat plate portion 8a with respect to the flat plate portion 8a, and another side surface of the flat plate portion 8a with respect to the flat plate portion 8a. And a release piece portion 8c that is rolled up. The locking recesses 8b and the release pieces 8c are arranged alternately in the circumferential direction of the retaining disc 8 with the flat plate portion 8a interposed therebetween. The locking concave portion 8b is a portion into which the claw portion 2c of the bush 2 is fitted. The releasing piece portion 8c extends so as to be separated from the flat plate portion 8a, and a space 8d through which the claw portion 2c passes is formed between the flat plate portion 8a and the releasing piece portion 8c in a side view. Therefore, by rotating the retaining disc 8 with respect to the bush 2, the retaining disc 8 can be detachably attached to the claw portion 2c. More specifically, when the pawl portion 2c is passed through the space 8d and fitted into the lower surface side (upper side of FIGS. 4 and 5) of the locking concave portion 8b, the locking concave portion 8b is locked by the pawl portion 2c. The retaining disk 8 can be attached to the claw portion 2c. On the other hand, when the pawl portion 2c is passed through the space 8d and sunk into the upper surface side (the lower side of FIGS. 4 and 5) of the release piece portion 8c, the retaining disk 8 is released from the locking by the pawl portion 2c. The retaining disc 8 can be removed from the bush 2.

The compression spring 9 is a member that presses the gas valve 6 against the valve seat 2b and presses the retaining disk 8 against the claw 2c. The compression spring 9 is arranged between the gas valve 6 and the retaining disc 8. One end of the compression spring 9 is locked to the upper flange portion 3 a of the down tube 3. The other end of the compression spring 9 is locked in the locking recess 8b of the retaining disk 8. As a result, the compression spring 9 urges the gas valve 6 upward toward the valve seat 2b, and urges the locking recess 8b of the retaining disc 8 downward toward the pawl 2c. Due to the biasing force of the compression spring 9 as described above, the gas valve 6 is pressed against the valve seat 2b and the retaining disk 8 is pressed against the claw portion 2c. As a result, the state where the retaining disc 8 is attached to the claw portion 2c is maintained.

FIG. 7 is a cross-sectional view showing a state in which the retaining disc is pushed into the valve seat side. FIG. 9 is a transition sectional view in the same section as FIG. As shown in FIGS. 7 and 9, when the retaining disk 8 is pushed toward the valve seat 2b side against the biasing force of the compression spring 9 (see FIG. 9B), the claw portion 2c formed by the compression spring 9 is pressed. The pressing force of the retaining disc 8 with respect to is released or relieved. As a result, the retaining disc 8 can be rotated with respect to the bush 2. Then, in this state, by rotating the retaining disc 8 with respect to the bush 2 (see (c) of FIG. 9), the retaining disc 8 is unlocked by the claw portion 2c, and the retaining disc 8 is retained. The disk 8 can be removed.

FIG. 8 is a sectional view showing a state in which the retaining disc is pushed toward the valve seat and the gas valve is pushed toward the retaining disc. As shown in FIG. 8, the retaining disc 8 is pushed toward the valve seat 2b side against the biasing force of the compression spring 9 (see FIG. 9B), and the gas valve 6 is pushed toward the retaining disc 8 side. Then, the pressing force of the retaining disk 8 against the claw portion 2c by the compression spring 9 is released or relaxed, and the pressing force of the gas valve 6 against the valve seat 2b by the compression spring 9 is also released or relaxed. As a result, the retaining disc 8 can be rotated with respect to the bush 2. Then, in this state, by rotating the retaining disc 8 with respect to the bush 2 (see (c) of FIG. 9), the retaining disc 8 is unlocked by the claw portion 2c, and the retaining disc 8 is retained. The disk 8 can be removed.

[Maintenance equipment for fittings]
Next, a maintenance device for fitting will be described.

FIG. 10 is a front view showing the maintenance device for the fitting according to the first embodiment. FIG. 11 is a front view showing a state in which the fitting is attached to the maintenance device for the fitting shown in FIG. FIG. 12 is a front view showing a state where the rod of the elevating part is raised in the maintenance device for the fitting shown in FIG. 11. As shown in FIGS. 10 to 12, the fitting maintenance device 10 includes a pressing portion 12 that presses the retaining disk 8 toward the valve seat 2b, and a pressing portion 12 on a base 11 that is erected on the installation surface. An adjusting unit 13 for adjusting the pressing amount of the retaining disk 8 is attached.

The pressing part 12 is arranged above the elevating part 21 and the elevating part 21 on which the fitting 1 is placed so that the claw part 2c faces upward with respect to the valve seat 2b, and which raises and lowers the fitting 1. Of the fittings 1 raised by the elevating part 21, a head part 22 that comes into contact with only the retaining disc 8 is provided.

The elevating unit 21 includes a cylindrical cylinder 23 fixed to the base 11, a cylindrical rod 24 that moves up and down with respect to the cylinder 23 by gas pressure, and a rotating unit 25 attached to the upper end of the rod 24. And The cylinder 23 can be fixed to the base 11 by bolting, for example.

13A and 13B are views showing the rotating portion, where FIG. 13A is a plan view, FIG. 13B is a side view, and FIG. 13C is a perspective view. As shown in FIGS. 10 to 13, the rotating portion 25 is a member that rotates the retaining disk 8 with respect to the bush 2. The rotating portion 25 includes a rotating base portion 26 attached to the upper end portion of the rod 24, a handle portion 27 extending from the rotating base portion 26, a locking portion 28 into which the bush 2 is fitted, and a bush 2 into the locking portion 28. In this case, the tip pressing portion 29 that comes into contact with the gas valve 6 is provided.

The rotation base portion 26 is formed in a cylindrical shape, and when attached to the upper end portion of the rod 24, can rotate about the central axis B of the rod 24 relative to the rod 24.

The handle portion 27 extends outward in the radial direction of the rotation base portion 26, and rotates the handle portion 27 around the central axis B of the rod 24 to rotate the rotating portion 25 around the central axis B of the rod 24. Is possible.

The locking portion 28 projects in a cylindrical shape from the upper surface of the rotation base portion 26, and can cover the bush 2. A concave portion 30 into which the claw portion 2c is inserted is formed on the outer peripheral surface of the locking portion 28. Therefore, when the locking portion 28 is covered with the bush 2, the claw portion 2c is inserted into the recess 30 so that the claw portion 2c is locked in the recess 30 in the rotation direction A.

The tip pressing portion 29 projects in a cylindrical shape from the upper surface of the locking portion 28, and can be brought into contact with only the gas valve 6 when the locking portion 28 is covered with the bush 2. That is, the outer diameter of the tip pressing portion 29 is smaller than the outer diameter of the gas valve 6 exposed from the bush 2 in plan view and larger than the inner diameter of the gas valve 6. Therefore, when the locking portion 28 is covered with the bush 2, the tip pressing portion 29 is not in contact with the bush 2 but is in contact with only the gas valve 6. Then, when the rod 24 is raised with respect to the cylinder 23, the tip pressing portion 29 raises the gas valve 6, so that the fitting 1 is raised.

14A and 14B are views showing the head, where FIG. 14A is a side view, FIG. 14B is a front view, and FIG. 14C is a bottom view. As shown in FIGS. 10 to 12 and 14, the head portion 22 includes a fixed portion 32 fixed to the base 11, a head main body portion 33 arranged vertically above the rotating portion 25, a fixed portion 32, and a head. And a connecting portion 34 that connects the main body portion 33. The fixing portion 32 can be fixed to the base 11 by bolting, for example.

A groove 35 is formed in the head body 33 to support the down tube 3 of the fitting 1 placed on the rotating unit 25. The groove 35 is formed in a circular cross section centered on the central axis B of the rod 24, and extends linearly in the vertical direction from the upper end to the lower end of the head body 33. The inner diameter of the groove 35 is slightly larger than the outer diameter of the down tube 3. In addition, the head main body portion 33 includes a base portion 36 connected to the connecting portion 34, a cylindrical portion 37 that extends in a cylindrical shape from the lower end of the base portion 36 toward the elevating portion 21 (rotating portion 25), and A plurality of protrusions 38 extending in a rod shape toward the elevating part 21 (rotating part 25) are provided.

The groove 35 is a groove for temporarily fixing the fitting 1 by inserting the down tube 3 of the fitting 1 placed on the rotating portion 25, and penetrates the base portion 36, the cylindrical portion 37, and the protruding portion 38. ing. The cylindrical portion 37 is formed in a cylindrical shape having the groove 35 as an inner peripheral surface. The wall thickness of the cylindrical portion 37 is smaller than the gap size between the bush 2 and the down tube 3. The protruding portion 38 is a portion that comes into contact with the retaining disc 8 of the fitting 1 when the fitting 1 is raised by the elevating/lowering portion 21. The protruding portion 38 is arranged so as to surround the groove 35 so as to contact only the retaining disc 8. In addition, in the present embodiment, the head main body 33 will be described as including three protrusions 38. The length of the protruding portion 38 is such that the cylindrical portion 37 and the base portion 36 do not contact the fitting 1 when the rod 24 is raised with respect to the cylinder 23.

15A and 15B are views showing the adjusting unit, where FIG. 15A is a plan view and FIG. 15B is a sectional view. 16A and 16B are exploded views of the adjusting unit, FIG. 16A is a cross-sectional view of the rod-side fixing unit, and FIG. 16B is a cross-sectional view of the base-side fixing unit. As shown in FIGS. 10 to 12, 15, and 16, the adjusting unit 13 adjusts the rising height of the fitting 1 by the elevating unit 21. The adjusting unit 13 includes a base-side fixing unit 40 fixed to the base 11 and a rod-side fixing unit 41 fixed to the rod 24.

The base-side fixing portion 40 is formed in a cylindrical shape, and the rod 24 is inserted into the inner peripheral surface side thereof. That is, the base-side fixing portion 40 is arranged so as to cover the entire circumference of the rod 24. The base-side fixing portion 40 is separated from the rod 24, and the rod 24 can move up and down without being interfered by the base-side fixing portion 40. The base-side fixing portion 40 can be fixed to the base 11 by bolting, for example.

The rod-side fixing portion 41 is arranged below the base-side fixing portion 40, and collides with the base-side fixing portion 40 to stop the rod 24 from rising. Further, the rod-side fixing portion 41 is capable of expanding and contracting toward the base-side fixing portion 40 side, and by colliding with the base-side fixing portion 40, the rising height of the rod 24 can be adjusted. The rod-side fixing portion 41 includes a base portion 42, a stretchable portion 43 that is stretchable with respect to the base portion 42, a handle portion 44 that extends from the stretchable portion 43, and a latch portion 45 that temporarily latches the handle portion 44. ..

The base portion 42 is formed in a cylindrical shape, and the rod 24 is inserted into the inner peripheral surface side thereof. The base portion 42 is fixed to the rod 24 at its lower end portion. The base portion 42 can be fixed to the rod 24 by, for example, screwing. A flange portion 46 is formed at an upper end portion of the base portion 42 and extends outward in the radial direction of the base portion 42. A female screw 47 is engraved on the inner peripheral surface of the upper portion of the base portion 42.

The expandable part 43 is formed in a cylindrical shape, and the rod 24 is inserted into the inner peripheral surface side thereof. It should be noted that it is separated from the expandable portion 43 and the rod 24. The expansion/contraction part 43 overlaps with the base-side fixing part 40 when viewed from the direction of the central axis B of the rod 24. Therefore, when the rod 24 is raised with respect to the cylinder 23, the expandable portion 43 collides with the base-side fixed portion 40. As a result, the lifting of the rod 24 is stopped.

A male screw 48 is engraved on the outer peripheral surface of the expandable portion 43, and is rotatably engaged with a female screw 47 engraved on the inner peripheral surface of the base portion 42. Therefore, by rotating the expansion/contraction part 43 with respect to the base part 42, the expansion/contraction part 43 can be moved in the vertical direction with respect to the base part 42. Then, the height of the rod 24 when the expandable part 43 collides with the base-side fixed part 40 can be changed by moving the expandable part 43 in the vertical direction with respect to the base part 42. In other words, when the telescopic portion 43 is rotated and moved upward with respect to the base portion 42, the stroke of the rod 24 until the telescopic portion 43 collides with the base-side fixed portion 40 is shortened, so that the telescopic portion 43 is mounted on the base portion. The height of the rod 24 when it collides with the side fixing portion 40 becomes low. On the other hand, when the expanding/contracting part 43 is rotated and moved downward with respect to the base part 42, the stroke of the rod 24 until the expanding/contracting part 43 collides with the base-side fixed part 40 becomes long, so that the expandable part 43 is attached to the base part. The height of the rod 24 when it collides with the side fixing portion 40 increases.

The handle portion 44 extends outward in the radial direction of the telescopic portion 43, and by rotating the handle portion 44 around the central axis B of the rod 24, the telescopic portion 43 can be rotated with respect to the base portion 42. Has become.

The latch portion 45 is provided on the flange portion 46 of the base portion 42. The latch portion 45 is a member that temporarily latches the handle portion 44 at a predetermined rotation position. The latch portions 45 are provided at a plurality of locations on the flange portion 46, and the handle portion 44 can be temporarily latched at a plurality of rotational positions. The latching of the latch portion 45 with respect to the handle portion 44 can be performed, for example, by fitting the tip of the latch portion 45 into a recess provided in the handle portion 44.

[How to maintain fittings]
Next, a method of maintaining the fitting 1 by the maintenance device 10 will be described.

This maintenance method includes a pressing step of pressing the retaining disk 8 toward the valve seat 2b and an adjusting step of adjusting the pressing amount of the retaining disk 8 by the pressing step.

In the pressing step, first, the fitting 1 is arranged so that the claw portion 2c faces upward with respect to the valve seat 2b. That is, by covering the locking portion 28 of the rotating portion 25 with a bush, the fitting 1 is mounted on the elevating portion 21 so that the claw portion 2c faces upward with respect to the valve seat 2b. Then, the claw portion 2c is inserted into the concave portion 30 to be locked in the concave portion 30 in the rotation direction A. The tip pressing portion 29 does not contact the bush 2 but contacts only the gas valve 6.

In the pressing step, next, the fitting 1 is raised and the raising of the retaining disc 8 above the set height is prevented. The fitting 1 is raised by raising the rod 24 with respect to the cylinder 23. When the rod 24 is raised with respect to the cylinder 23, the tip pressing portion 29 raises the gas valve 6, whereby the fitting 1 rises. On the other hand, when the retaining disc 8 contacts the plurality of protrusions 38 of the head portion 22, the retaining disc 8 is prevented from rising above the set height. Then, like the fitting 1 shown in FIG. 8, the retaining disc 8 is pushed toward the valve seat 2b side, and the gas valve 6 is pushed toward the retaining disc 8 side. As a result, the pressing force of the retaining disk 8 on the pawl portion 2c by the compression spring 9 is released or alleviated, and the pressing force of the gas valve 6 on the valve seat 2b by the compression spring 9 is also released or alleviated. Then, by rotating the handle portion 27 of the rotating portion 25, the retaining disc 8 is rotated with respect to the claw portion 2c, and the retaining disc 8 is removed from the bush 2. At this time, the retaining disc 8 may be manually rotated with respect to the claw portion 2c without rotating the handle portion 27 of the rotating portion 25.

In the adjusting step, the handle 44 of the adjusting unit 13 is rotated to adjust the rising height of the fitting in the pressing step. That is, when the handle portion 44 is rotated to rotate the telescopic portion 43 with respect to the base portion 42, the telescopic portion 43 is moved in the vertical direction with respect to the base portion 42, and the telescopic portion 43 collides with the base-side fixed portion 40. The height of the rod 24 when changing is changed. Therefore, the distance from the contact of the retaining disk 8 to the plurality of protrusions 38 to the stop of the ascending of the rod 24 due to the collapsible portion 43 colliding with the base-side fixed portion 40 is relative to the bush 2. The telescopic portion 43 is rotated with respect to the base portion 42 so as to match the pushing amount of the retaining disc 8 with respect to the valve seat 2b so that the retaining disc 8 can rotate. As a result, when the expansion/contraction part 43 collides with the base-side fixed part 40 to stop the rising of the rod 24, the pressing force of the retaining disc 8 against the pawl part 2c by the compression spring 9 is released or relieved, The retaining disc 8 can be rotated with respect to the claw portion 2c.

After that, the fitting 1 is lowered by lowering the rod 24 with respect to the cylinder 23, and the parts of the fitting 1 are separated, whereby the disassembly of the fitting 1 is completed. Then, the fitting 1 is maintained. The contents of maintenance include replacement of the consumable gas valve 6 and cleaning of parts. The assembly of the fitting 1 may be performed by reversing the disassembling procedure of the fitting 1.

[Maintenance of other fittings]
As mentioned above, the structure of the fitting varies from manufacturer to manufacturer. Therefore, a fitting having a structure different from that of the fitting 1 will be described with reference to FIGS. 17 to 19 are sectional views of other fittings. In the following, only the part different from the fitting 1 will be described.

The fitting 1A shown in FIG. 17 is basically similar to the fitting 1, but the amount of pushing the retaining disk 8A toward the valve seat 2b side when disassembling and assembling the fitting 1A is larger than that of the fitting 1. .. When disassembling and assembling the fitting 1A as described above, in the adjusting step, the height of the rod 24 when the expansion portion 43 collides with the base-side fixing portion 40 becomes lower than in the case of the fitting 1. Then, the expansion/contraction part 43 is rotated with respect to the base part 42.

The fitting 1B shown in FIG. 18 is basically the same as the fitting 1, but the amount of pushing the retaining disc 8B toward the valve seat 2b side when disassembling and assembling the fitting 1B is smaller than that of the fitting 1. .. Further, the claw portion 2cB is formed at a position slightly displaced upward from the lower end portion of the bush 2, and most of the retaining disc 8B is recessed on the inner peripheral surface side of the bush 2. When disassembling and assembling the fitting 1B as described above, the height of the rod 24 when the expansion portion 43 collides with the base-side fixing portion 40 becomes higher in the adjusting step than in the case of the fitting 1. Then, the expansion/contraction part 43 is rotated with respect to the base part 42. It should be noted that the fitting 1 is in contact with a plurality of rod-shaped protruding portions 38, and these protruding portions 38 extend from a cylindrical portion 37 having a cylindrical shape centered on the central axis B of the rod 24. Therefore, the retaining disc 8B can be pushed into the valve seat 2b side without being interfered with by other members such as the bush 2.

The fitting 1C shown in FIG. 19 is basically the same as the fitting 1, but the arm portion 7cC of the stopper 7C projects from the hole formed in the claw portion 2cC. Even when the fitting 1C is disassembled and assembled as described above, the plurality of protrusions 38 which are brought into contact with the fitting 1C extend in a rod shape from the cylindrical portion 37 having the center axis B of the rod 24 as a center. Therefore, the retaining disc 8 can be pushed toward the valve seat 2b without being interfered by the arm portion 7cC.

As described above, in the fitting maintenance device 10 and the maintenance method according to the present embodiment, when the retaining disk 8 is pressed toward the valve seat 2b by the pressing portion 12, the retaining disk 8 is pressed toward the valve seat 2b side. The pressing force of the retaining disk 8 against the claw portion 2c by the compression spring 9 is released or relieved. As a result, the retaining disc 8 can be rotated with respect to the bush 2 and the retaining disc 8 can be unlocked by the claw portion 2c, so that the retaining disc 8 can be removed from the bush 2. Here, as described above, the amount of pushing the retaining disc 8 toward the valve seat 2b side is different between the fittings manufactured by a plurality of manufacturing companies so that the retaining disc 8 can be rotated with respect to the bush 2. .. However, by adjusting the pressing amount of the retaining disc 8 by the pressing unit 12 by the adjusting unit 13 for each manufacturing company, the retaining disc 8 is pushed to the valve seat 2b side for each fitting made by a plurality of manufacturing companies. The retaining disk 8 can be removed from the claw 2c by rotating the retaining disk 8 with respect to the claw 2c.

Further, when the lifting portion 21 raises the fitting 1 placed so that the claw portion 2c faces upward with respect to the valve seat 2b, the head portion 22 contacts only the retaining disc 8 of the fitting 1. As a result, the lifting of the retaining disc 8 is prevented. Then, the retaining disc 8 is pushed toward the valve seat 2b side, and the pressing force of the retaining disc 8 against the pawl portion 2c by the compression spring 9 is released or relieved. Thereby, the retaining disc 8 can be removed from the bush 2 by rotating the retaining disc 8 with respect to the claw portion 2c. Then, the adjusting unit 13 adjusts the rising height of the fitting 1 by the elevating unit 21. As a result, for each fitting that is manufactured by a plurality of manufacturing companies, the retaining disc 8 is pushed toward the valve seat 2b side, the retaining disc 8 is rotated with respect to the pawl portion 2c, and the retaining disc 8 is moved from the pawl portion 2c. It can be removed.

Further, the fitting 1 can be easily and reliably raised and lowered by raising and lowering the rod 24 with respect to the cylinder 23 fixed to the base 11 by gas pressure.

Further, the rod-side fixing portion 41 fixed to the rod 24 collides with the base-side fixing portion 40 fixed to the base 11 to stop the rising of the rod 24. Thereby, the rising height of the fitting 1 can be accurately defined. Moreover, since the rod 24 rises due to the gas pressure, the impact generated on the base-side fixing portion 40 and the rod-side fixing portion 41 can be suppressed to a small level.

Further, since the rod-side fixing portion 41 collides with the base-side fixing portion 40 to stop the rising of the rod 24, the rod-side fixing portion 41 is expanded/contracted toward the base-side fixing portion 40, and the base is fixed. The rising height of the fitting 1 can be adjusted easily and reliably by expanding and contracting the space between the base-side fixing portion 40 and the rod-side fixing portion 41.

Further, since the plurality of protruding portions 38 extending in a rod shape toward the elevating portion 21 are brought into contact with the retaining disc 8, the head portion 22 is not attached when disassembling and assembling the fittings manufactured by a plurality of manufacturing companies. It becomes easy to contact only the retaining disk 8.

In addition, since the plurality of protrusions 38 extend from the cylindrical portion 37 having a cylindrical shape centered on the central axis B of the rod 24, by reducing the wall thickness of the cylindrical portion 37, the bush 2 and the down tube 3 can be formed. Even if there is another obstacle in between, it is possible to prevent the head portion 22 from coming into contact with the obstacle.

When the gas valve 6 is moved up and down by the elevating part 21, the retaining disc 8 is pushed toward the valve seat 2b by the head part 22 and the gas valve 6 is pushed toward the retaining disc 8 side by the elevating part 21. As a result, not only the pressing force of the retaining disk 8 by the compression spring 9 against the claw portion 2c is released or alleviated, but also the pressing force of the gas valve 6 by the compression spring 9 against the valve seat 2b is released or alleviated. This makes it easier to rotate the retaining disc 8 with respect to the claw portion 2c.

Further, by rotating the retaining disc 8 with respect to the bush 2 by the rotating portion 25, the retaining disc 8 can be easily attached to and detached from the bush 2.

[Second embodiment]
Next, a second embodiment will be described. The second embodiment is basically the same as the first embodiment, but only the structure of the rotating portion is different from the first embodiment. Therefore, hereinafter, only matters different from the first embodiment will be described, and explanations of matters similar to the first embodiment will be omitted.

FIG. 20 is a front view showing a maintenance device for fittings according to the second embodiment. FIG. 21 is a front view showing a state in which a fitting is attached to the fitting maintenance device shown in FIG. 22 is a front view showing a state in which the rod of the elevating part is raised in the fitting maintenance device shown in FIG. 23A and 23B are views showing the rotating portion, where FIG. 23A is a plan view, FIG. 23B is a side view, and FIG. 23C is a perspective view. As shown in FIGS. 20 to 23, in the fitting maintenance device 10A according to the second embodiment, the rotating portion 25A is a member that rotates the retaining disk 8 with respect to the bush 2. The rotating portion 25A includes a rotating base portion 51 attached to the upper end portion of the rod 24, a handle portion 52 extending from the rotating base portion 51, and a locking portion 53 into which the bush 2 is fitted.

The rotation base 51 is formed in a cylindrical shape, and when attached to the upper end of the rod 24, can rotate with respect to the rod 24 about the central axis B of the rod 24. The outer diameter of the rotating base 51 is larger than the inner diameter of the bush 2.

The handle portion 52 extends outward in the radial direction of the rotation base portion 51, and rotates the handle portion 52 around the central axis B of the rod 24 to rotate the rotating portion 25A around the central axis B of the rod 24. Is possible.

The locking portion 53 projects in a cylindrical shape from the upper surface of the rotation base portion 51, and can cover the bush 2. The bush 2 covered by the locking portion 53 is in contact with the upper surface of the rotation base 51 at the lower end surface thereof. Then, when the rod 24 is raised with respect to the cylinder 23, the rotation base 51 raises the bush 2 and the fitting 1 is raised.

A recess 54 into which the claw 2c is inserted is formed in the locking portion 53. Therefore, when the engaging portion 53 is covered with the bush 2, the pawl portion 2c is inserted into the concave portion 54, so that the pawl portion 2c is locked in the concave portion 54 in the rotation direction A. The recess 54 is formed by cutting out the locking portion 53, and the locking portion 53 has an intermittent cylindrical shape with the recess 54 sandwiched therebetween.

Next, a method of maintaining the fitting 1 by the maintenance device 10A will be described.

This maintenance method is basically the same as that of the first embodiment, and differs from the first embodiment only in the mechanism of pressing the retaining disc 8 toward the valve seat 2b in the pressing step.

In the pressing step, first, the fitting 1 is arranged so that the claw portion 2c faces upward with respect to the valve seat 2b. That is, by covering the locking portion 53 of the rotating portion 25A with a bush, the fitting 1 is placed on the elevating portion 21 such that the claw portion 2c faces upward with respect to the valve seat 2b. Then, the claw portion 2c is inserted into the concave portion 54 to be locked in the concave portion 54 in the rotation direction A. Further, the bush 2 is brought into contact with the upper surface of the rotation base 51.

In the pressing step, next, the fitting 1 is raised and the raising of the retaining disc 8 above the set height is prevented. The fitting 1 is raised by raising the rod 24 with respect to the cylinder 23. When the rod 24 is raised with respect to the cylinder 23, the rotary base 51 raises the gas valve 6 and the fitting 1 is raised. On the other hand, when the retaining disc 8 contacts the plurality of protrusions 38 of the head portion 22, the retaining disc 8 is prevented from rising above the set height. Then, like the fitting 1 shown in FIG. 7, the retaining disc 8 is pushed toward the valve seat 2b side. As a result, the pressing force of the retaining disk 8 against the claw portion 2c by the compression spring 9 is released or relieved. Then, by rotating the handle portion 52 of the rotating portion 25A, the retaining disc 8 is rotated with respect to the claw portion 2c, and the retaining disc 8 is removed from the bush 2. In the second embodiment, since the pressing force of the gas valve 6 against the valve seat 2b by the compression spring 9 is not released or relieved, it is difficult to manually rotate the retaining disk 8 with respect to the claw portion 2c.

The adjustment step and other methods are the same as those in the first embodiment.

As described above, in the fitting maintenance device 10A and the maintenance method according to the present embodiment, when the bush 2 is raised and lowered by the rotating base portion 51 of the elevating portion 21, the head portion 22 moves the retaining disc 8 to the valve seat 2b side. By being pushed in, the pressing force of the retaining disc 8 against the claw portion 2c by the compression spring 9 is released or relieved. This makes it easier to rotate the retaining disk 8 with respect to the claw portion 2c.

Further, by rotating the retaining disk 8 with respect to the bush 2 by the rotating portion 25A, even if the pressing force of the gas valve 6 against the valve seat 2b by the compression spring 9 is not released, the retaining disk 8 is retained. The disk 8 can be easily attached and detached.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the specific forms of the pressing portion and the adjusting portion have been described, but any of them may be substituted as long as they have the functions to be performed by each. Further, in the above embodiment, the rod-side fixing portion is described as being expandable and contractable toward the base-side fixing portion side, but the base-side fixing portion is expandable and contractable toward the rod-side fixing portion side. May be Further, in the above embodiment, the maintenance device and the maintenance method have been described as performing the disassembly and assembly of the fitting, but the maintenance device and the maintenance method may be a device and a method that only disassemble the fitting. It may be an apparatus and method for performing only assembly.

1, 1A, 1B, 1C... Fitting, 2... Bush, 2a... Locking piece, 2b... Valve seat, 2c, 2cB, 2cC... Claw portion, 2d... Side opening, 3... Down tube, 3a... Top flange portion, 3b... step portion, 4... beverage valve, 5... liquid passage compression spring, 6... gas valve, 6a... core metal, 6b... valve portion, 7, 7C... stopper, 7a... fixed portion, 7b... protruding portion, 7cC ... Arm part, 8, 8A, 8B... Retaining disk, 8a... Flat plate part, 8b... Locking concave part, 8c... Release piece part, 8d... Space, 9... Compression spring, 10, 10A... Maintenance device, 11... Base Table, 12... Pressing part, 13... Adjusting part, 21... Lifting part, 22... Head part, 23... Cylinder, 24... Rod, 25, 25A... Rotating part, 26... Rotating base part, 27... Handle part, 28... Engagement Stop portion, 29... Tip pressing portion, 30... Recessed portion, 32... Fixed portion, 33... Head main body portion, 34... Connection portion, 35... Groove, 36... Base portion, 37... Cylindrical portion, 38... Projection portion, 40... Base Base side fixing part, 41... Rod side fixing part, 42... Base part, 43... Stretching part, 44... Handle part, 45... Latch part, 46... Flange part, 47... Female screw, 48... Male screw, 51... Rotating base part , 52... Handle part, 53... Locking part, 54... Recessed part, 100... Barrel container, 101... Mouth, A... Rotation direction, B... Central axis line, G... Gas channel, L... Liquid channel.

Claims (12)

A bush that is screwed into the mouthpiece of the barrel container, a down tube provided inside the bush, a gas valve arranged between the valve seat formed in the bush and the down tube, and the bush The retaining valve is disposed between the gas valve and the retaining disc, which is removably attached to the claw portion formed at the lower end of the bush by rotating, and the gas valve is disposed between the retaining valve and the retaining disc. A maintenance device for fitting, comprising: a compression spring that presses the retaining disk against the claw portion while pressing
A pressing portion that presses the retaining disk toward the valve seat,
An adjusting unit that adjusts a pressing amount of the retaining disc by the pressing unit,
Maintenance equipment for fittings. The pressing portion is
An ascending/descending unit for mounting the fitting so that the claw portion faces upward with respect to the valve seat, and ascending and descending the fitting;
A head part that is disposed above the elevating part and abuts only on the retaining disc of the fitting that is elevated by the elevating part,
The adjustment unit adjusts a rising height of the fitting by the lifting unit,
The maintenance device for a fitting according to claim 1. The lifting unit is
A cylinder fixed to the base,
A rod that moves up and down with respect to the cylinder by gas pressure,
The maintenance device for the fitting according to claim 2. The adjustment unit,
A base-side fixing portion fixed to the base,
A rod-side fixing portion that is fixed to the rod and that stops rising of the rod by colliding with the base-side fixing portion.
The maintenance device for the fitting according to claim 3. Any one of the rod-side fixing portion or the base-side fixing portion is extendable toward either the other side of the rod-side fixing portion or the base-side fixing portion,
The maintenance device for the fitting according to claim 4. The head portion includes a plurality of protrusions that extend in a rod shape toward the elevating portion and abut on the retaining disc.
The maintenance device for the fitting according to any one of claims 3 to 5. The head portion further includes a cylindrical cylindrical portion centered on the central axis of the rod,
The plurality of protrusions extend from the cylindrical portion,
7. The fitting maintenance device according to claim 6. The elevating part raises and lowers the gas valve,
The maintenance device for the fitting according to any one of claims 2 to 7. The elevating part raises and lowers the bush,
The maintenance device for the fitting according to any one of claims 2 to 7. The elevating unit further includes a rotating unit that rotates the retaining disc with respect to the bush.
The maintenance device for a fitting according to any one of claims 2 to 9. A bush that is screwed into the mouthpiece of the barrel container, a down tube provided inside the bush, a gas valve arranged between the valve seat formed in the bush and the down tube, and the bush The retaining valve is disposed between the gas valve and the retaining disc, which is removably attached to the claw portion formed at the lower end of the bush by rotating, and the gas valve is disposed between the retaining valve and the retaining disc. And a compression spring that presses the retaining disc against the claw portion while pressing the
A pressing step of pressing the retaining disc toward the valve seat,
An adjusting step of adjusting the pressing amount of the retaining disc by the pressing step,
How to maintain fittings. In the pressing step, the fitting is arranged so that the claw portion faces upward with respect to the valve seat, the fitting is raised, and the rising of the retaining disc or more is prevented from rising.
In the adjusting step, the rising height of the fitting in the pressing step is adjusted,
The fitting maintenance method according to claim 11.

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