JP2018188927A - Machino style base cap for piping equipment and air valve using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a useful Machino style base cap and a pneumatic valve using it which can make desorption of the Machino style base cap extremely easily by obtaining a large movable torque by using common push rings, when mounting/dismounting the Machino style base cap to piping equipment such as air valves.SOLUTION: In a base cap used for a piping equipment, the base cap comprises a tubular insertion metal fitting, a push ring rotatably and vertically movably provided on an outer periphery of the insertion metal fitting, and a tubular body fixed to the lower part of the insertion metal fitting. In a Machino style base cap for a piping equipment, the tubular body and an opening of the piping equipment are attached in a sealed state, and in a state in which the tubular body and the push ring are locked via locking means, the turning force of the push ring is interlocked with the tubular body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a Machino-type base for piping equipment and an air valve using the same, and in particular, a Machino-type base for piping equipment that secures easy and reliable detachability even in the case of a large diameter, and the same. It relates to the air valve.

  Machino type caps are used for connecting fire hydrants to fire hydrants, and can be attached to and detached from valves such as air valves, short pipes, fire hydrant female screws, or other piping equipment, such as washing pipes, temporary water inlets, water pressure Used for measurement. In particular, there is a need for the Machino-type base to be easily attachable / detachable to / from the piping equipment. In general, the base is detachably provided at an opening of the piping equipment by appropriate means. Among these, a screw-type base is disclosed in Patent Document 1, for example.

  In the same document 1, a cap receiver is shown in which a metal fitting with a push ring fitted thereto can be fixed with a female screw. The base is a short cylindrical metal fitting, the outer periphery of the upper part is extended outward to form a nut-like collar part, and the outer peripheral surface of the lower part is formed with a male screw. By rotating the collar with a tool, this male screw can be attached to and detached from the female screw of the valve box. Further, the base receiver is screwed to the inner peripheral side of the upper end portion of the valve box with a packing interposed therebetween, and the packing is compressed from above and below by the valve box and the base receiver.

  By the way, the following examples are already known in the case where a Machino type base is attached to and detached from an opening of a valve box of an air valve, for example. That is, the Machino-type base (attachment) of Patent Document 2 has an arm engagement piece projectingly formed on the side surface of the detachable lid as a fixing means for fixing the detachable lid (base) to the upper opening of the valve box. Correspondingly, a notch-shaped guide part is provided on the valve box side, and the arm engagement piece is aligned with this guide part while inserting the detachable lid so that the arm engagement piece is engaged with the stopper. By rotating a predetermined angle and engaging the lock pin and the arm engagement piece, the detachable lid can be fixed and held on the valve box very easily by hand. In addition, a fitting portion with a reduced diameter is formed in the opening above the valve box, and the detachable lid can be fitted into the fitting portion, and is formed at the top of the fitting portion when fitted. The packing mounted in the annular groove has a structure for sealing the fluid.

  Further, the Machino-type base of Patent Document 3 shows a structure that can be attached and detached by lever operation. That is, FIG. 10 of the same document 2 shows a plug-type (machino-type) base and two levers, and the base is formed with an engagement groove similar to the concave engagement groove of the lid. The state in which the engaging portion of the lever of the valve box is pressed against the engaging groove from both sides and the base is firmly coupled to the valve box is shown. In this coupled state, the lower end surface of the base is an annular sealing surface, and according to this, the fluid is sealed in close contact with an annular sealing member provided in the lid receiving portion of the valve box.

  Furthermore, although not shown in the prior art document, in order to make the air valve usable as an emergency water supply port, a dedicated ball presser that pushes down the floating valve body and the float valve body against the opening of the valve box of the air valve. There is also known a structure of a base that can be attached to and detached from an air valve by attaching a screw with a screw, and allowing a Machino-type base to be freely attached to and detached from the opening.

Japanese Patent Laid-Open No. 11-173438 Japanese Patent Laying-Open No. 2015-117827 JP 2012-255550 A

  However, the Machino-type base of Patent Document 2 normally holds the base (insertion bracket) and applies rotational torque to the detachable lid at the time of detachment. In addition to the structure that is difficult to convey, the hand may be slippery due to water or the like adhering to the base. In such a peripheral surface sealing structure, the sealing member (or a sealing surface such as a metal touch) is sealed. When it is in a fixed state with the detachable lid (cylindrical body), particularly large torque is required. In particular, in the case of a large diameter, for example, Φ75 specification, the seal area between the cylindrical body fitted to the fitting portion and the seal member (seal surface) becomes large, and the crimping of the seal part is continued. Even if the metal fitting is turned by hand, the torque for rotating the cylindrical body tends to be insufficient, and the base may not be easily removed. This is the same in that there is a possibility that sufficient torque cannot be secured even when the base is attached.

  Further, since the Machino-type base of Patent Document 3 has a detachable structure by lever operation, it is necessary to ensure a movable space for rotating the lever with a margin, and thus an unnecessary increase in the size of the air valve can be avoided. There is also a possibility that work cannot be performed in the air valve BOX. In addition, since the base is pressed against the valve box by the large force amplified by the principle of the lever, there is a possibility that the lower end face of the base is in close contact with the seal member and it becomes difficult to remove the base. When the lower end surface of the base is close to the fulcrum of the lever, or when the lever handle that is the power point is far from the fulcrum, the pressing force increases depending on the structure of the lever, and the base becomes easy to firmly adhere. Such a problem that the sealing member and the base are too close to each other and are difficult to be removed also occurs in the structure of Patent Document 1 in which the sealing member is fastened by the end face seal. Further, similarly to Patent Document 2, since the sealing area becomes large when the diameter of the air valve is large, this problem has to be more remarkable.

  Furthermore, even in the case of a structure in which a dedicated ball presser is attached to and detached from the air valve by screw fastening, in the case of a large diameter such as Φ75 specification, particularly large torque is required, and the base may not be easily removed. is there. Further, as in the case of the following Patent Document 1, a separate tool is indispensable.

  In the base of Patent Document 1, since a large torque is required for tightening the screw, a predetermined tool such as a spanner or a lever handle is indispensable when attaching and detaching. For this reason, when attaching and detaching the base of the document 1 to the piping equipment, it is necessary to always bring a predetermined tool to work, and the convenience of the base as an adapter such as carrying and parts management is impaired. In addition, fire hydrants and air valves installed in water mains are usually stored compactly in a narrow space that is secured to a minimum. Difficult work using tools will be forced, and workability will be extremely poor compared to manual work.

  As described above, the base as an adapter structure used for piping equipment such as a fire hydrant and an air valve is not only a simple and compact structure, but also requires manual operation without any tools regardless of the diameter or sealing structure of the piping equipment. There is a need for both good workability that can be easily attached and detached, and good connectivity such as sealability and strength, but no proposal of a conventional technique that solves such a problem has been made yet.

  Therefore, the present invention has been developed to solve the above-mentioned problems, and the object of the present invention is to use a push ring when attaching and detaching a Machino-type base to piping equipment such as an air valve. It is an object of the present invention to provide a useful Machino-type base that can move and remove the Machino-type base very easily by obtaining a movable torque, and an air valve using the same.

  In order to achieve the above object, the invention according to claim 1 is a base used for piping equipment, and the base includes a cylindrical fitting and a pusher provided on the outer periphery of the fitting so as to be rotatable and vertically movable. And a cylindrical body fixed to the lower part of the metal fitting. The cylindrical body and the opening of the piping equipment are attached in a sealed state, and the cylindrical body and the push ring are connected via a locking means. This is a Machino-type base for piping equipment in which the rotational force of the push ring is interlocked with the tubular body in a locked state.

  According to a second aspect of the present invention, the locking means is a town equipment type base for piping equipment in which the side portion of the engaging protrusion provided on the cylindrical body and the side piece of the collar portion of the push ring are locked.

  According to a third aspect of the present invention, the locking means includes an annular recess formed on the upper surface of the cylindrical body, and the locking recess locked with the press ring and the collar of the press ring in the lowered state. It is a formula base.

  The invention according to claim 4 is the Machino-type base for piping equipment in which the piping equipment is an air valve or a short pipe.

  The invention according to claim 5 is an air valve in which the piping equipment is an air valve, and a cylindrical body of a pipe-type base for piping equipment is detachably fixed to the opening of the valve box of the air valve. is there.

  According to a sixth aspect of the present invention, in the air valve, the float valve body and the floating valve body are housed in the guide body in the valve box, the cylindrical body of the base is used as the detachable lid of the air valve, and the detachable lid is used as the valve box The air valve is engaged and fixed to the opening in a rotating state.

  According to a seventh aspect of the present invention, in the air valve described above, the float valve body and the floating valve body are housed in the guide body in the valve box, the cylindrical body of the base is used as the detachable lid of the air valve, and the detachable lid is used as the valve. It is an air valve fixed to the opening of the box via a fixing means.

  According to an eighth aspect of the present invention, there are provided a Machino-type base for piping equipment in which the Machino-type base is used for cleaning, maintenance or a fire hydrant in a pipe, and an air valve using the same.

  According to the first aspect of the present invention, in the base composed of the metal fitting, the push ring, and the cylindrical body, the rotation of the push ring is performed while the cylindrical body and the push ring are locked via the locking means. Since the power is linked to the cylindrical body, even if the cylindrical body is in close contact with the opening of the piping equipment by simply turning the push ring, it can be easily rotated with sufficient torque. The base can be attached and detached reliably. In addition, since the push ring is rotated, it is not difficult to rotate or slip easily in the gripped state as in the case of grasping and turning the insert, so that the attaching / detaching work is facilitated and the attachment to the insert directly. Since no torque is applied, the fixing between the metal fitting and the cylindrical body is not damaged. Moreover, a push ring can be used when attaching the base, and the structure of the Machino-type base can be used to the maximum.

  According to the invention described in claim 2, since the locking means locks the side portion of the engagement protrusion provided on the cylindrical body and the side piece of the collar portion of the push ring, it is extremely simple but strong. With a compact structure, it can exert a positive locking force and transmit the torque of the push ring to the cylindrical body. In addition, when the side piece of the hook part with which the side part of the engaging protrusion is engaged is located on the rotation center side, on the other hand, when the position to apply torque to the hook part is closer to the outside, the principle of the lever is It is also possible to transmit a large torque with a small turning force. Furthermore, the structure of the base does not increase in size or complexity.

  According to the third aspect of the present invention, when the push ring is rotated in an appropriate direction, the push ring is fitted into the locking recess formed at least one on the upper surface of the cylindrical body while the base portion of the collar portion is lowered. Since the base of the collar is locked to the end of the locking recess while being fitted in the annular recess, the push ring is securely locked to the cylindrical body. Therefore, the cylindrical body can be easily rotated with a large rotational torque and the Machino-type base can be easily attached and detached.

  According to the invention described in claim 4, since the piping equipment is an air valve or a short pipe, it is possible to provide a Machino-type base that is highly convenient in a water main having an air valve or a short pipe.

  According to the invention described in claim 5, since the piping equipment is an air valve, and the cylindrical body of the base is detachably fixed to the opening of the valve box of the air valve via the seal member, the base can be attached and detached. The workability is extremely good because it can be easily and reliably performed. In addition to this cap, the air valve can also be used as a fire hydrant. A highly versatile air valve that can be used as a piping part that can be used for various purposes, such as a temporary water supply port, or an entrance / exit of various survey equipment for water pressure measurement, etc. Can be provided.

  According to the invention of claim 6, in the air valve, the float valve body and the floating valve body are housed in the guide body in the valve box, and the cylindrical body of the base is used as a removable lid (cylindrical body) of the air valve, Since this detachable lid is engaged and fixed to the opening of the valve box in a rotating state, while having a function as an air valve, it can be used for various applications without requiring a separate adapter (base), It is possible to provide an air valve capable of easily attaching and detaching the base simply by engaging and fixing the detachable lid (cylindrical body) to the opening in a rotating state.

  According to the invention described in claim 7, in the air valve, the float valve body and the floating valve body are housed in the guide body in the valve box, and the cylindrical body of the base is used as a removable lid (cylindrical body) of the air valve, Since this detachable lid is fixed to the opening of the valve box via a fixing means, it has a function as an air valve and can be used for various applications without requiring a separate adapter (base). It is possible to provide an air valve that can be reliably attached and detached by the fixing means.

  According to the invention described in claim 8, since the Machino type cap is used for cleaning, maintenance or a fire hydrant in the pipe, it can be easily applied to these uses by arranging the base and the air valve in the pipe. It becomes a piping part that can be used as a dual-use pipe, and its utility value is extremely high.

It is a longitudinal cross-sectional view which shows 1st Embodiment of the Machino type base for piping equipment of this invention. It is the sectional view on the AA line in FIG. It is a side view which shows 2nd Embodiment of the Machino type base for piping equipment of this invention. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is the longitudinal cross-sectional view which showed the state which connected the example of the Machino type coupling to the Machino type cap for piping equipment of 1st Embodiment of this invention shown in FIG. It is the P section enlarged view of FIG. It is the longitudinal cross-sectional view which showed an example which used the machino type | mold base for piping equipment of 1st Embodiment of this invention shown in FIG. 1 as the attachment / detachment cover of an air valve. It is a longitudinal cross-sectional view of the air valve provided with the conventional Machino type nozzle for piping equipment. In FIG. 8, it is a longitudinal cross-sectional view which shows the state which removed the internal component.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of a first embodiment of a Machino-type base for piping equipment according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. Moreover, FIG. 3 is a longitudinal cross-sectional view of 2nd Embodiment of the Machino type base for piping equipment of this invention, FIG. 4 is BB sectional drawing of FIG.

  First, the structure of the embodiment of the base of the present invention will be described. As shown in FIGS. 1 to 4, the Machino-type base for piping equipment according to the present invention is a base 1 used for piping equipment to be described later. The base 1 includes a cylindrical insertion fitting 2 and the insertion fitting 2. A push ring 4 provided on the outer periphery 3 so as to be rotatable and movable up and down, and a cylindrical body 6 fixed to a lower portion 5 of the metal fitting 2. The diameter of the metal fitting 2 is set to φ40, 50, 65, 75, for example.

  1 and 2 show the structure of the first embodiment of the Machino-type base 1 for piping equipment according to the present invention.

  In FIG. 1, the cylindrical insertion fitting 2 of this example is made of SUS304, and a hook-like locking portion 7 having a stepped portion 7 a is formed at the upper end portion. It is fixed to a fixing portion 9 on the inner peripheral surface side of the upper part of the cylindrical body 6 through an O-ring 8 as a use. In the present embodiment, the male screw of the lower portion 5 and the female screw of the fixing portion 9 are screwed together, and an adhesive for preventing loosening is applied to the screw portion of the male screw and the female screw so that they are firmly fixed. Yes. In addition to the above-mentioned form, the fixing means can be selected according to the implementation, such as fitting and fixing the lower part 5 to the fixing part 9, or omitting the O-ring 8 and adhesively sealing with an adhesive. The insert fitting 2 and the cylindrical body 6 may be formed integrally instead of separate members. However, even when integrally formed, it is necessary to configure at least so that it can function as a Machino-type base (insert).

  As shown in FIGS. 1 and 2, the push ring 4 of this example is made of SCS13, and has a short cylindrical portion 10 and a wing-shaped flange portion 11 protruding in a direction perpendicular to the axial direction of the cylindrical portion 10. Are formed integrally symmetrically, and the cylindrical portion 10 is fitted in the loosely fitting state with a slight play with respect to the outer peripheral surface portion 3a of the metal fitting 2. In the same figure, since the lower part 5 of the metal fitting 2 is fixed to the fixing part 9, the push ring 4 (cylindrical part 10) is rotatable with respect to the outer peripheral surface part 3a of the metal fitting 2, and a cylindrical body. 6 is movable up and down from the upper end surface 12 to the locking portion 7 of the metal fitting 2. As will be described later, this rotation and vertical movement allow the push ring 4 to remove the Machino-type coupling and to engage the locking means of the present invention.

  In FIG. 1, the cylindrical body 6 of this example is made of CAC406, the upper side is a small diameter portion 13 (neck portion) formed in a small diameter according to a predetermined standard, and the lower side is large according to large-diameter piping equipment. Since the large-diameter portion 14 is formed in the diameter, the whole is a cylindrical member having a substantially trumpet shape. In FIG. 2, as will be described later, an arm engagement piece 15 is provided to be detachable by rotating engagement with piping equipment. The arm engagement pieces 15 are integrally formed on the side surface of the cylindrical body 6 so as to protrude at equal intervals (three at intervals of 120 degrees), and are provided so as to be in contact with a stepped portion 45 described later. Are formed at different inclination angles, and a gently inclined surface 15a is formed on one side and a steeply inclined surface 15b is formed on the other side. Furthermore, the display unit 16 for alignment is also provided uniformly (three at intervals of 120 degrees).

  As shown in FIGS. 1 and 2, the engagement protrusion 17 as the locking means of the present embodiment has a small diameter on the outer peripheral side of the inclined surface 18 between the large diameter portion 14 and the small diameter portion 13 of the cylindrical body 6. The portion 13 is formed in a bar shape integrally with the small diameter portion 13 so as to extend along the portion 13, and the portion protruding upward from the upper end surface 12 has a substantially cylindrical shape. As will be described later, the side portion 17a of the engaging protrusion 17 protruding above the upper end surface 12 can be engaged with the side piece 11a of the pivotable flange portion 11. In addition, although the number of such engagement protrusions 17 is one in this example, two or more engagement protrusions 17 may be provided, and the number of engagement protrusions that can function as described above as locking means is provided. The position, shape, etc. can be arbitrarily selected according to implementation.

  3 and 4 show the structure of the second embodiment of the Machino-type base 20 for piping equipment according to the present invention. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, an annular recess 21 as a locking means is formed on the upper surface 22 of the small diameter portion 13. Specifically, as shown in FIG. 4, the small-diameter portion 13 is formed to be slightly thicker and the outer diameter of the smaller-diameter portion 13 is set to be slightly outside the outer diameter of the push ring 4 (tubular portion 10). In addition, the inner diameter side of the upper surface 22 of the small-diameter portion 13 is cut into an L-shaped cross section with a width slightly larger than the thickness of the cylindrical portion 10 so that the cylindrical portion 10 can be freely fitted. The annular recess 21 is formed, and the upper surface 22 is notched so as to be connected from the bottom surface of the annular recess 21 to the outer peripheral surface side of the small diameter portion 13 to form the stepped portion 23a. A locking recess 23 adapted to the shape is formed. As will be described later, the annular recess 21 formed in this way is configured such that when the position of the flange portion 11 of the push ring 4 coincides with the locking recess 23, the push ring 4 (cylinder portion 10) is formed in the annular recess 21. Simultaneously with the fitting, the flange 11 is fitted in the locking recess 23 so that the rotation of the push ring 4 can be locked to the cylindrical body 6.

  Next, the operation of the embodiment of the base of the present invention will be described. In the base of the present invention, the rotational force of the push ring 4 is interlocked with the tubular body 6 in a state where the tubular body 6 and the push ring 4 are locked via the locking means. Such a locking means can be arbitrarily selected according to the implementation without any particular limitation, but is usually applied to the push ring 4 by physically engaging the push ring 4 and the cylindrical body 6. This means is capable of transmitting the rotational force to the cylindrical body 6 and may be provided on either the push wheel 4 side or the cylindrical body 6 side, and may be provided separately from these. .

  The locking means in the base 1 of the first embodiment of the present invention shown in FIGS. 1 and 2 is a side piece 17 a of the engaging projection 17 provided on the cylindrical body 6 and a side piece of the flange 11 of the push ring 4. 11a is locked. Specifically, as shown by solid lines in FIGS. 1 and 2, the pusher wheel 4 is placed in contact with the upper end surface 12 of the small-diameter portion 13 so that the lower end surface of the cylindrical portion 10 is in contact with its own weight. When the push wheel 4 is rotated in the direction of the arrow shown in FIG. 2, the height of the side piece 11 a of the flange 11 is lower than the height of the engaging projection 17 as shown by a two-dot chain line in FIG. Since it can be applied to the side portion 17a of the engaging protrusion 17, the rotation of the flange portion 11 can be locked. Therefore, by further rotating the push wheel 4 in the direction of the arrow in this locked state, the rotational force can be transmitted to the cylindrical body 6 via the engagement protrusion 17, and the cylindrical body 6 can be easily operated. It becomes possible to turn to.

  On the other hand, the locking means in the base 20 of the second embodiment of the present invention shown in FIGS. Are locked in a lowered state. Specifically, as indicated by solid lines in FIGS. 3 and 4, when the positions of the flange portion 11 and the locking recess 23 do not match, the push ring 4 is in surface contact with the upper surface 22 of the small diameter portion 13 by its own weight. If the push wheel 4 is rotated in the direction of the arrow shown in FIG. 4, the position of the collar 11 is set to the locking recess 23 as shown by a two-dot chain line in FIG. When the heel portion 11 is lowered and fitted into the locking recess 23, the cylinder portion 10 is also lowered and fitted into the annular recess 21, so that the entire push wheel 4 is lowered by one step. It becomes the state that did. In this lowered state, since the position / shape of the locking recess 23 matches the position / shape of the collar as described above, the collar 11 can be easily fitted or fitted to the locking recess 23. Although it can be released, the collar portion 11 is substantially restricted by the step portion 23a of the locking recess 23 in the rotating direction, and therefore, the rotation of the push wheel 4 is locked. Therefore, by rotating the push wheel 4 in the direction of the arrow in this locked state, the rotational force can be transmitted to the cylindrical body 6 via the step portion 23a of the locking recess 23, and the cylindrical body 6 can be easily turned.

  As described above, the base (1, 20) of the present example directly pushes the push ring 4 that provides the rotational force to the locking means provided on the tubular body 6, so that the push ring 4, the tubular body 6, Are rotated together. Therefore, an operator who performs an operation of attaching and detaching the base of the present invention normally holds the push wheel 4 while holding the collar 11 of the push wheel 4 and maintaining the state in which the push wheel 4 and the locking means are engaged. As long as the force is applied, a reliable torque can be applied to the tubular body 6 only by turning. Even if the tubular body 6 is tightly coupled to the sealing member of the piping equipment, the diameter of the piping equipment is large and sealed. Even when the frictional force with the member is strong, there is no possibility that the base will be hindered from being removed (or attached). Further, as the Machino type, the attaching / detaching operation can be completed only by an easy operation of handling the collar portion 11 (the push wheel 4) originally provided as a handle for gripping by hand. 2 and 4, the rotation direction of the push wheel 4 is illustrated, but is not particularly limited to this direction, and is rotated in the opposite direction to the illustrated direction so as to be engaged with the locking means. Also good.

  Then, the case where the Machino type base for piping equipment of this invention and a Machino type coupling are connected is demonstrated. FIG. 5 shows an example of the structure of the Machino type coupling, and a longitudinal section showing a state in which the connection between the Machino type coupling 25 and the base 1 of the first embodiment of the present invention shown in FIGS. FIG. 6 is a partially enlarged cross-sectional view in which a P portion in FIG. 5 is enlarged. FIG. 5 shows a state in which the lower surface of the collar portion 10 of the push wheel 4 is on the upper end surface 17 b of the engagement protrusion 17. Of course, this connection state is the same in the structure of the second embodiment.

  In FIG. 5, the Machino-type coupling 25 is provided with a fastening ring 27 having a rubber band 26 on the outer periphery and a receiving metal fitting 28 fitted and fixed to the fastening ring 27 with a set screw or the like at the distal end. It is a coupling that serves as a receptacle for the Machino-type base, and the figure shows an example in which an on-off valve 29 is connected to the receptacle 28, but in addition to this, for example, a hose for fire fighting, Various pipes, valves, short pipes such as elbows and straights, various measuring equipment such as pressure gauges for water pressure measurement, emergency water supply equipment, and various in-pipe inspection equipment such as cables and endoscope cameras, etc. It is arbitrarily selected according to implementation without limitation.

  The fastening ring 27 is formed in a ring-shaped appearance having an L-shaped cross section, and has a tip end surface 27a of the Machino-type coupling 25 and an inner diameter substantially equal to the outer diameter of the cylindrical portion 10 of the base 1 on the tip end surface 27a. An opening 30 is provided, and a claw portion 32 is provided on the inner peripheral side via a claw seat 31 between the receiving metal fitting 28 and the claw seat 31. The claw portion 32 is ejected toward the inner peripheral side by a claw spring 33 and can protrude. The metal fitting 28 has an opening 34 that is substantially equal to the outer diameter of the locking portion 7 of the base 20, and a rubber packing 35 is provided on the back side of the opening 34. A receiving surface 36 that can be brought into contact with the front end surface of the locking portion 7 is formed.

  As shown in FIG. 5, in the state where the connection between the Machino-type coupling 25 and the base 1 shown in FIGS. 1 and 2 is completed, the depth from the opening 34 of the metal fitting 28 to the receiving surface 36 is small. Since it is provided so as to match the length of the locking portion 7 at the tip of the metal fitting 2, the locking portion 7 is inserted into the receiving metal 28, and in this state, the step portion 7a of the locking portion 7 is inserted. Since the position matches the position of the claw portion 32, the claw portion 32 can protrude and engage with the stepped portion 7a. Further, the outer peripheral surface of the locking portion 7 is in close contact with the rubber packing 35 so that the fluid can be hermetically sealed. Therefore, at the time of connection, as the metal fitting 2 is inserted into the opening 30 of the fastening ring 27, the inclined surface of the claw portion 32 is slid by the outer peripheral surface of the locking portion 7 in the immersion direction. The nail | claw part 32 in which the position of the step part 7a and the nail | claw part 32 corresponded and was intruded protrudes in the position where insertion is latched as the front end surface of the latching | locking part 7 hits the receiving surface 36 Engaging with the stepped portion 7a, the fitting 2 is prevented from coming off by this engagement, and the connection between the base 1 and the Machino coupling 25 is completed.

  To cancel the connection of the Machino type coupling 25 in the figure, although not shown, for example, as shown in Japanese Utility Model Publication No. 38-3959, the push ring 4 is moved by the operation of the collar part 11. This is done by moving to the 25th side. Specifically, when the cylinder portion 10 is pushed in against the impact of the claw portion 32 engaged with the step portion 7a, the claw portion 32 is slid and urged to engage with the step portion 7a. As a result, the retaining of the Machino-type coupling 25 is released, so that in this state, there is no restriction for pulling out the Machino-style coupling 25, so that it can be pulled out as it is and the connection can be removed.

  As shown in FIG. 5, the height of the engaging protrusion 17 in the first embodiment is set so that about 3 to 4 mm protrudes upward from the upper end surface 12 of the cylindrical body 6 in a substantially cylindrical shape. doing. By setting the height to this level without being too high, the height of the flange portion 11 is between the height of the distal end surface 27a of the connected Machino-type coupling 25 and the height of the engaging projection 17. A sufficient space greater than the thickness is ensured, and as shown in FIG. 6, even when the collar portion 10 is on the upper end surface 17 b, there is an interval of play between the claw portion 32 and the upper surface 10 a of the tube portion 10. Since h can be provided, the push wheel 4 can freely move over the engaging protrusion 17 without being restricted by the engaging protrusion 17 or the claw 32. Further, when the Machino-type coupling 25 is to be connected to the base 1, even if the flange portion 11 of the push ring 4 is connected in a state of riding on the upper end surface 17 b of the engagement protrusion 17, the distal end surface 27 a is As shown in FIG. 6, the upper surface 10a of the cylinder portion 10 does not reach the claw portion 32. Therefore, the coupling connection is hindered regardless of the posture and state of the push ring 4. Will not occur. The advantage that the coupling can be connected without any problem regardless of the state of the push ring 4 is the same in the second embodiment.

  Next, an embodiment in which the Machino-type base of the present invention is used for piping equipment will be described. The base of the present invention attaches the cylindrical body 6 and the opening 37 of the piping equipment in a sealed state via a sealing member (U packing 44). In this embodiment, the piping equipment is an air valve 38. Then, the cylindrical body 6 of the base is detachably fixed to the opening 37 of the valve box 39 of the air valve 38 through a sealing member. However, in addition to the air valve 38 as piping equipment, although not shown, various valves and short pipes are not particularly limited and can be arbitrarily selected according to the implementation. Further, in this example, the U packing 44 is used as the sealing means. However, a sealing form having no sealing member such as a sealing surface formed by metal touch may be used.

  FIG. 7 shows an example of the structure of the valve box 39 of the air valve 38 as piping equipment, and the base 1 of the first embodiment of the present invention shown in FIGS. It is the longitudinal cross-sectional view which showed the state fixed to. Of course, the second embodiment can also be connected to the opening 37 of the valve box 39 of the air valve 38 in the same manner. Since the valve box 39 in the figure is for a large diameter, the structure is slightly different from the valve box 39 for a small diameter shown in FIGS. The air valve 38 is provided, for example, in a pipe line of a water main (not shown), and is provided so as to be able to discharge air due to air bubbles or air pools contained in tap water. Particularly preferred locations for installing the air valve 38 include the topmost portion when the laying gradient of the pipeline changes, the central portion of the water pipeline at regular intervals (for example, 300 to 500 m) with respect to the straight horizontal pipeline, There are places where air supply and exhaust are required before and after the main valve of the pipeline. The target fluid may be a liquid other than tap water, and excess air contained in the liquid can be discharged. The air valve 38 is suitable for, for example, washing tube work, pressure measurement, temporary water supply, and the like.

  In FIG. 7, the valve box 39 is made of, for example, ductile cast iron. In the valve box 39, a resin float valve element such as ebonite and a resin idle valve element such as polypropylene are not shown. A guide body made of a resin such as ABS resin can be disposed in the same manner as the air valve 101 in FIGS. 8 and 9 described later, and an opening 37 is formed above the valve box 39. Has been. In this opening portion 37, a metal cylindrical body 6 such as CAC 406 can be temporarily fixed via an appropriate fixing means. Therefore, the base 1 can be attached to and detached from the air valve 38 as an option. Goods. As will be described later, the air valve 38 is a state in which the cylindrical body 6 and the guide body containing the float valve body and the floating valve body are taken out from the opening 37 of the valve box 39 as necessary. The cylindrical body 6 is fixed to the opening 37 of the valve box 39.

  Although not shown, a large air hole valve seat having an appropriate structure is provided on the lower end surface of the cylindrical body 6, and this cylindrical body 6 is used as a lid that can be attached to and detached from the opening 37. It is also possible to adopt a form in which 1 is always fixed and built in the air valve 38.

  The valve box 39 has a substantially cylindrical shape (tea cup shape) in which a constricted portion 41 is formed in the lower portion, and an opening portion 37 is provided in the upper portion and an inflow port 69 is provided in the lower portion. Provided. A fitting portion 42 having a diameter smaller than that of the opening portion 37 is formed on the opening portion 37 side of the valve box 39, and an annular groove 44 a is formed in the upper portion of the fitting portion 42. A U-packing 44 (seal member) made of, for example, a cylinder material is mounted in the annular groove 44a. A step 45 is provided between the opening 37 and the fitting portion 42, and a thrust ring 46 is attached to the step 45, and a screw of the bolt member 47 is screwed onto the upper surface of the opening 37. A female screw 48 is provided at a plurality of locations by centering.

  The inlet 69 at the lower part of the valve box 39 is provided so as to ensure a predetermined inflow area, and a flange 49 is provided on the outer periphery of the lower part, and a repair valve (not shown) or the like (for example, not shown) A ball valve whose ball diameter is substantially the same as that of the internal flow path of the air valve 38 and which can be opened and closed by turning the stem by 90 degrees is detachably provided. The storage chamber 43 is provided with an inner diameter capable of storing the guide body, and a guide pedestal 50 for placing the guide body is formed in the lower portion of the storage chamber 43 so as to protrude inward. A plurality of side guides 51 project from the inner peripheral side of the storage chamber 43, and the side guides 51 can be guided to the guide body in a centered state at an appropriate height that can contact the outer periphery of the guide body. Provided.

  As a structure for attaching and detaching the base 1 of this example to the air valve 38, the float body and the floating valve body are housed in the guide body in the valve box 39, while the cylindrical body 6 (removable lid) is attached to the valve box 39. A structure is adopted in which the opening 37 is engaged and fixed in a rotating state. Thereby, the nozzle | cap | die 1 is attached to the valve box 39 via the cylindrical body 6, and is attached or detached as needed in the case of cleaning or inspection of internal components. A guide body (float valve body, floating valve body) housed in the air valve 38 shown in FIG. 7 is not shown, but a guide body 52 (float valve body 53, floating valve body) described later in FIGS. A configuration similar to the configuration of 54) can be used.

  The fixing lid 55 is provided so as to be attachable to the upper surface 39a of the valve box 39 so that the cylindrical body 6 can be positioned and fixed. A hole 56 is formed at the center of the fixed lid 55, and the cylindrical body 6 can be inserted into the hole 56. A through hole 57 is formed in the fixed lid 55 at a position corresponding to the female screw 48. A notch-shaped guide portion 58 through which the arm engagement piece 15 passes is formed in a part of the hole portion 56, and a stopper (not shown) protruding downward is formed following the guide portion 58. Thus, the rotation range of the cylindrical body 6 is set. The fixing lid 55 is placed on the valve box upper surface 39 a, and the bolt member 47 is fixed to the valve box 39 by screwing the screw into the female screw 48 from the through hole 57. In this case, since the female screw 48 is centered, the fixing lid 55 is fixed in a state in which the misalignment is prevented.

  The lock pin 59 is attached to the fixed lid 55, and is provided so as to be engaged with the cylindrical body 6 by a biasing force of a spring (not shown) so that the cylindrical body 6 can be mounted in a predetermined positioning state. The lock pin 59 is grasped with a finger and pulled outward to unlock the tubular body 6, and the tubular body 6 can be detached from the valve box 39 by rotating the detachable lid 40 in this state. It has become.

  In FIG. 7, when the cylindrical body 6 is attached to the valve box 39 when functioning as an air valve, first, the float valve body and the floating valve body are accommodated in the guide body, and this guide body is opened from the opening 37. After the insertion, the cylindrical body 6 is covered from above the valve box 39, the cylindrical body 6 is inserted while aligning the positions of the arm engagement piece 15 and the guide portion 58, and the arm engagement piece with respect to a stopper (not shown). The cylindrical body 6 is rotated by a predetermined angle in the direction in which 15 is engaged. By this rotation, the lock pin 59 is automatically moved in the immersion direction by the gently inclined surface 15 a of the arm engagement piece 15. When the cylindrical body 6 reaches the set position, the steeply inclined surface 15b reaches the position of the lock pin 59, so that the lock pin 59 protrudes by the urging force of the spring and engages with the steeply inclined surface 15b. At this time, since the gently inclined surface 15a collides with the side surface portion of the stopper, the arm engagement piece 15 is sandwiched and held from both sides.

When removing the cylindrical body 6, the cylindrical body 6 is rotated by a predetermined angle in the take-out direction while grasping and pulling the lock pin 59 to release the locking to the steeply inclined surface 15b. In this case, the arm engagement piece 15 is supported by the thrust ring 46 in a state where the arm engagement piece 15 is in contact with the stepped portion 45, so that the rotation is smooth. When the steeply inclined surface 15b of the arm engaging piece 15 comes into contact with the stopper of the fixed lid 55, it can be extracted by pulling up the cylindrical body 6. At this time, since the guide body 52 can move up and down in the storage chamber 43, the cylindrical body 6 can be easily attached and detached.

  Further, although not shown, the cylindrical body 6 can be fixed to the opening 37 of the valve box 39 through fixing means having a configuration different from the above-described configuration by the arm engagement piece 15. Specifically, for example, an integral detachable lid having a concave engagement groove, an engagement portion engageable with the engagement groove, and a valve box having a rotatable lever having an operation portion are provided. With the detachable lid temporarily attached to the box, the lever is rotated to engage the engaging portion with the engaging groove in the press contact state, or the lever is rotated from this state to separate the engagement from the engaging groove. Thus, the detachable lid on which the guide body containing the float valve element and the idle valve element is temporarily attached can be attached to and detached from the valve box.

  As described above, the air valve 38 of the present invention shown in FIG. 7 has a large-diameter specification such as Φ75 when used as a temporary fire hydrant requiring urgent, for example, the U packing 44 and the cylindrical body 6. Even when a large torque is required to remove the cylindrical body 6 due to a large frictional force in the seal and a tight seal on the peripheral surface, etc., a separate part is provided at the place where the air valve 38 is installed. The cylindrical body 6 can be rotated easily and quickly without carrying the air, so that the air valve 38 can be easily switched to a fire hydrant and the convenience of the air valve 38 can be greatly enhanced.

  In particular, a U-packing is used for the peripheral surface seal of the Machino-type base used for air valves and the like because of its sealing performance. Although this seal maintains good sealing performance and suppresses sliding resistance, When the diameter is large, the rotational torque is likely to increase with an increase in the seal area, and the base is difficult to remove from the valve box. On the other hand, since the base of the present invention is provided with a locking means and transmits a reliable torque easily, quickly and safely, the base can be removed or attached securely, so that its usefulness Is extremely expensive.

  8 and 9 are longitudinal sectional views of an air valve 101 provided with a conventional Machino type mouthpiece 100, which is similar to the air valve disclosed in the above-mentioned Patent Document 2 by the applicant of the present application, and is for a small bore. Although the structure of the valve box shown in FIG. 7 is slightly different, the same parts as those of the valve box 39 shown in FIG. In the base 100, the removable cover 102 having a large air hole (large air hole valve seat portion 104) corresponds to the cylindrical body 6 and can be fixed to the air valve 101 at all times.

  In FIG. 8, the guide body 52 has an upper portion disposed on the lower surface of the detachable lid 102 and a lower portion provided so as to be able to be placed on the guide pedestal 50 so as to be sandwiched between the guide pedestal 50 and the lower surface of the detachable lid 102. While being stored in the storage chamber 43, it is mounted with play between the detachable lid 102 and the guide base 50. A plurality of communicating portions 61 for communicating fluid are formed in the upper portion of the guide body 52, and a hole 62 having a predetermined diameter is provided at a substantially central position on the bottom surface side. The communication part 61 is provided at equal intervals by a plurality of notch parts, and the area when the fluid passes is determined by the communication part 61.

  Both the float valve body 53 and the floating valve body 54 are provided in a short cylindrical shape and in a flat shape, and are detachable in a state where the floating valve body 54 is disposed above the float valve body 53 inside the guide body 52. Provided. A small air hole 63 penetrating vertically is formed at an eccentric position of the floating valve body 54, and air can move from the small air hole 63 of the eccentric structure. On the upper surface side of the floating valve body 54, a seal ring 64 is mounted that can contact and seal the lower surface of the detachable lid 102 when the floating valve body 54 floats. The float valve body 53 and the floating valve body 54 receive buoyancy in accordance with the water level in the valve box 39 and are guided by the guide body 52 and can move smoothly up and down. It is discharged outside the air valve.

  8 and 9, the metal fitting 2 and the push ring 4 of the base 100 are configured in the same manner as those provided in the bases 1 and 20 of the present invention described above, but the detachable lid 102 is for a small diameter such as Φ25. Therefore, the configuration is slightly different, and it is formed in a straight short cylindrical shape having no large diameter portion and a small diameter portion as in the structure of the present invention, and the diameter is smaller than the opening portion of the guide body 52. The reduced diameter portion 103 has a large air port. In addition, the configuration such as fixing to the arm engagement piece 15 and the metal fitting 2 is the same as that of the detachable lid 40 of the present invention. Further, although not shown in the figure, the attaching / detaching lid 102 may be appropriately provided with a locking means for the push wheel 4 similarly to the structure of the attaching / detaching lid 40 in the present invention.

  Also, as shown in FIGS. 8 and 9, a cover body 65 is attached to the upper portion of the valve box 39. The cover body 65 is made of, for example, a metal such as stainless steel, is formed in a shape that can surround the upper portion of the valve box 39, and is attached to the detachable lid 102 so as to cover the large air hole of the detachable lid 102 and the atmosphere. Or the valve box 39 is detachably provided. Although not shown, a bolt hole portion into which the head portion 66a of the fixing bolt 66 can be inserted and removed is formed on the top surface of the cover body 65, and a bolt hole that can lock the head portion 66a is formed following this bolt hole portion. A slot-shaped guide hole that is narrower than the portion is formed. The cover body 65 is fixed to the valve box 39 and placed on a bolt member 47 that becomes a support column, and a fixing bolt 66 is screwed into a female screw portion 47a formed on the bolt member 47 through a guide hole portion. It is attached by doing. Thus, when the detachable lid 102 is used as an air valve, the cover body 65 is in a state in which the guide body 52, the float valve body 53, and the floating valve body 54 are disposed in the lower portion and communicates with the large air hole and the outside air. Is covered.

  Further, although not shown, an open / close cock that communicates with the inside may be provided on the side surface of the valve box 39 in order to release residual pressure when the air valve 101 is disassembled.

  Although not shown in FIG. 7, as described above, the guide body 52 shown in FIG. 8 and the components housed therein are also shown in the valve box 39 of the air valve 38 shown in FIG. The guide body (not shown) housed in the valve box 39 in FIG. 7 can also disassemble the air valve 38 in the same manner as shown in FIG. Can be taken out easily.

  In the air valve 101 shown in FIGS. 8 and 9, this disassembly will be described in detail. First, the flow path from the water flow path to the air valve 101 is shut off. At this time, since there is residual pressure in the air valve 101, the detachable lid 102 is pushed up and brought into close contact with the bottom surface side of the fixed lid 55, and the rotation is prevented. If a cock (not shown) provided in the valve box 39 is opened from this state, the residual pressure in the air valve 101 is released, and the push-up force to the detachable lid 102 is released, so that disassembly is possible.

  Next, the cover body 65 is removed from the valve box 39. In this case, after loosening the fixing bolt 66 and loosening the cover body 65, the cover body 65 is rotated so that the bolt hole is aligned with the position of the head 66a of the fixing bolt 66, and the cover body 65 is moved in this state. It can be removed by pulling upward. FIG. 9 shows a state where the air valve 101 of FIG. 8 is disassembled in this way.

  8 and 9, temporary attachment portions 67 and 68 are provided on the removable cover 102 and the guide body 52, respectively. That is, temporary connection portions 67 and 68 made of, for example, uneven portions that can be temporarily fixed to each other are provided at the lower portion of the detachable lid 102 having a large air hole and the upper portion of the guide body 52. The removable cover 102 and the guide body 52 are detachably connected to each other. Then, as shown in FIG. 9, when the detachable lid 102 is taken out from the valve box 39, the guide body 52 and the detachable lid 102 are simultaneously pulled out in a connected state by this connection.

  Thus, by providing the detachable lid 102 and the guide body 52 so that they can be taken out at the same time, the guide valve 52, the float valve body 53, and the floating valve body 54 can be easily attached and detached, and the float valve body 53 and the floating valve body 54 can be used. The function of the air valve can be demonstrated. In this case, the provisional connection between the temporary connection portions 67 and 68 (fitting of the concavo-convex portions) secures a temporarily fixed state between the guide body 52 of the detachable lid 102 and the center of the detachable lid 102 and the guide body 52 is displaced. By not having the large air hole, the diameter of the large air hole can be increased, and the pressure loss when the float valve body 53, the floating valve body 54, and the guide body 52 are taken out to exhibit a water passing function such as a fire hydrant can be further reduced. Therefore, when the cylindrical body 6 shown in FIG. 7 is also provided with a valve seat for a large air hole and is used as a detachable lid that can be fixed to the air valve at all times, the temporary connecting portion provided in the guide body A temporary connection part (convex part) can also be formed in a form corresponding to the (recessed part).

  Moreover, as shown in FIGS. 6-9, since the nozzle | cap | die of this invention is easy to attach or detach with respect to a Machino type coupling 25, and also to an air valve (piping equipment) easily, In addition to being able to use the base and the air valve as a temporary fire hydrant, it is possible to clean and maintain the inside of the piping through the base and the air valve.

  Furthermore, the present invention is not limited to the description of the above-described embodiment, including materials and the like, and various modifications can be made without departing from the spirit of the invention described in the claims of the present invention. Is.

1 and 20 Base 2 Insert metal fitting 3 Outer circumference 4 Push ring 5 Lower part 6 Tubular body (detachable lid)
11 flange part 11a side piece 17 engagement protrusion (locking means)
17a side 22 upper surface 21 annular recess (locking means)
37 Opening 38 Air valve (Piping equipment)
39 Valve box

Claims (8)

  A base used for piping equipment, the base including a cylindrical insert, a push ring provided on the outer periphery of the insert so as to be rotatable and movable up and down, and a cylindrical body fixed to a lower portion of the insert The cylindrical body and the opening of the piping device are attached in a sealed state, and the pusher wheel is rotated in a state where the cylindrical body and the push ring are locked via a locking means. A Machino type base for piping equipment, characterized in that power is linked to the cylindrical body.   The locking means according to claim 1 is a town equipment type base for piping equipment in which a side portion of an engaging protrusion provided on the cylindrical body and a side piece of a flange portion of the push ring are locked.   The locking means according to claim 1 is an Mino field-type cap for piping equipment in which the annular recess formed on the upper surface of the tubular body and the retaining ring are engaged with the retaining ring in a lowered state. .   The said piping equipment is an air valve or a short pipe, The Machino type base for piping equipment according to any one of claims 1 to 3.   The said piping equipment is an air valve, and the cylindrical body of the Machino type base for piping equipment according to any one of claims 1 to 4 is detachably sealed in an opening of a valve box of the air valve. Air valve fixed with.   6. The air valve according to claim 5, wherein a float valve body and an idle valve body are housed in a guide body in the valve box, the cylindrical body of the base is used as a detachable lid for the air valve, and the detachable lid is used as a valve box. An air valve engaged and fixed in the rotating state in the opening.   6. The air valve according to claim 5, wherein a float valve body and an idle valve body are housed in a guide body in the valve box, the cylindrical body of the base is used as a detachable lid for the air valve, and the detachable lid is used as a valve box. An air valve fixed to the opening of the door through fixing means.   A Machino-type base that uses the Machino-type base for piping equipment according to any one of claims 1 to 7 for cleaning, maintenance, or a fire hydrant in a pipe, and an air valve using the same.

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