JP2019060097A - Anti-freezing liquid draining plug - Google Patents

Abstract

To provide an anti-freezing liquid draining plug of a simple structure allowing further easy and appropriate maintenance work when re-inserting a nozzle for opening/closing a water passage.SOLUTION: In an anti-freezing liquid draining plug, a water cut-off valve 40 which can open/close a water passage 11 and a water draining passage 17, and closes a flow-in communication port 16 communicating a vertical opening 15 with a flow-in water passage 12 when a nozzle 20 is drawn out for maintenance, is arranged in the flow-in water passage 12. The nozzle 20 has an outer diameter part 20a formed to open the flow-in communication port 16 by pushing away the water cut-off valve 40 by a part downstream a water passing on-off valve 21 having a ring packing 30, against the pressure of the flow-in water, and has a constricted part 23 reduced to a small diameter on the nozzle 20 to displace the water cut-off valve 40 to close the flow-in communication port 16 to stop water, when the ring packing 30 at the time of re-insertion of the nozzle 20 is displaced downward and seals the vertical opening 15.SELECTED DRAWING: Figure 1

Description

  The present invention comprises a main body forming a continuous water flow path from an inflow water channel section provided on one side to an outflow water channel section provided on the other side, and is inserted and arranged from above the main body The present invention relates to an antifreeze tap for opening and closing the water flow passage and opening and closing a water removal passage by operating a nozzle up and down.

  2. Description of the Related Art Conventionally, in water supply systems in cold regions, various types of antifreeze for preventing freezing (antifreeze water removal) connected to a water pipe have been proposed variously. For example, a valve opening / closing device for driving the operating rod up and down is attached to the upper portion of the water removal plug, and the valve opening / closing device is connected to the operation rod inside the water removal via a connection joint, and the valve opening / closing By operating the device, the operating rod is provided to be pushed down or pulled up, and when the operating rod is pushed down to the lowermost position, the inlet and the outlet communicate with each other through the water passage, In the water (open) state, when the operating rod is pulled upward, the water passage is first blocked by the packing attached to the valve located below the operating rod and the water passage is stopped (closed) . Further, when the operating rod is pulled up to the uppermost position, the water draining water flow path from the outlet which was blocked by the ring packing located above the valve to the drain port opens, and the water of the secondary side pipe connected to the outlet [0003] A water removal plug is proposed which is drained from the outlet through a drain channel and drained from a drain port (see [0002] of Patent Document 1 and FIG. 10).

  Further, in this water removal plug, the plug unit portion has a check valve main body having a drain port and an outlet provided on the rotary barrel, and a cylindrical main body fixed to the lower end of the outer cylinder, and the lower end of the main body It is attached to, and consists of an elbow which has an inflow port, and the stop valve which stops the flow of the water to a water flow path is provided in the inside of an inflow port (refer to [0003] of patent document 1, FIG. 10).

  Furthermore, as a conventional water draining plug, it comprises a plug unit part for interrupting the flow of water, an operating rod for operating the plug unit part, and an opening / closing device of a valve for driving the operating rod up and down. The unit portion is attached to an inlet formed on the side of the unit body, an outlet, a water passage provided between the inlet and the outlet, and a nozzle connected to the operation rod and moving up and down A valve for closing the water flow passage, a water shut off valve housed in the unit body so as to be disposed under the nozzle, and having a first ring packing at the top, and a pressure receiving pressure from the first ring packing The second ring packing which is small in area and in contact with the lower part of the water shut off valve, and housed in the unit main body so as to be disposed under the water shut off valve, and after removing the nozzle at the time of repair Said stop Drain tap, characterized in that a means pushing for blocking the passage pushes up the valve (claim 1 of Patent Document 1) has been proposed by the applicant.

  In these ring packing type water drain plugs, the ring packing needs to be replaced as appropriate because of its structure, and in such packing replacement, it is necessary to withdraw a set including the nozzle connected to the operating rod. And since water of a water flow spouts if it does not stop by water stop valve etc. at the time of such exchange, a stop valve etc. are built in beforehand, and a mechanism using water pressure and a mechanism using means to push up In order to be able to stop water temporarily by

  However, in these drainage taps, during maintenance where a nozzle connected to the operating rod and displaced up and down is reinserted, the ring packing of the on-off valve for water passage is displaced from above, When the upper and lower openings are sealed in a watertight manner, none of the water shut off valves block the inflow communication port, and the pressure of the inflow water is applied to the ring packing on the whole. For this reason, the pressure of the inflow water causes great resistance to insert the nozzle, and the ring packing fitted and attached to the nozzle may be detached.

Patent No. 3731880 ([Claim 1], [0002], [0003], [0005], FIG. 1, FIG. 10)

  The problem to be solved with regard to antifreeze water removal and removal is that, in the above-described conventional configuration, the operation of inserting the nozzle by the pressure of the inflowing water at the time of maintenance where the nozzle for opening and closing the water passage is reinserted. It is difficult to do it more easily and properly.

  Therefore, it is an object of the present invention to provide a simple configuration, but at the time of maintenance where a nozzle for opening and closing a water passage is reinserted, the operation of inserting the nozzle can be performed more easily and properly. It is to provide frozen water removal.

The present invention comprises the following configuration to achieve the above object.
According to one aspect of the antifreeze water decanter according to the present invention, the main body is provided with a main body forming a continuous water flow path from the inflow water passage portion provided on one side to the outflow water passage portion provided on the other side; Opening and closing the water flow passage and opening and closing the water drainage passage can be performed by operating the nozzle inserted and disposed from the upper side of the main body up and down in the middle portion of the water flow passage An upper and lower opening is provided such that the inner peripheral surface is a seal peripheral surface, and the nozzle is inserted from above from the upper and lower opening and disposed so as to be vertically displaceable, and the upper and lower opening of the nozzle is A ring packing for watertight sealing by being in sliding contact with the peripheral surface of the seal is fitted to the corresponding portion, whereby a water on-off valve is configured, and the nozzle is withdrawn for maintenance. The upper and lower openings and the lower front of the upper and lower openings A water shut-off valve for closing the inflow communication port provided so as to communicate with the inflow water channel section is displaced inward by the pressure of the inflow water so that the inflow communication port can be blocked. In a state where the lower end portion of the nozzle is sealed on the inner peripheral surface of the lower end side inserted portion formed lower than the inflow communication port of the main body at the time of water passing and draining. , Antifreeze water decanter provided vertically displaceable,
When the nozzle is displaced downward, the required portion below the on-off valve for water flow pushes the water shut-off valve outward against the pressure of the inflow water, thereby the inflow communication port And the ring packing of the on-off valve for water flow is displaced from above when the nozzle is withdrawn and reinserted for maintenance. When the upper and lower openings are sealed in a watertight manner, the water shut-off valve can be displaced in the inward direction in order to close the water inlet communication port so as to close the water inlet, In the middle part, a constricted part having a shape narrowed to a small diameter is formed.

  Further, according to one aspect of the antifreeze water decanter according to the present invention, the downward conical surface portion and the downward conical surface so that the constriction portion is provided with a conical slope as a guide surface on both upper and lower sides. It can be characterized in that it is formed in a V-shaped circumferential groove shape by an upward conical surface-like portion continuously formed below the planar portion.

  Further, according to one aspect of the antifreeze water decanter pertaining to the present invention, a convex portion that protrudes so that a portion abutting on the nozzle so as to be pushed away by the nozzle of the water blocking valve has a conical slope. Can be characterized.

  Further, according to one aspect of the antifreeze-water decanter according to the present invention, the nozzle is provided in a spool valve shape, and the inner diameter of the inner peripheral surface of the upper and lower opening and the inner peripheral surface of the lower end insertion portion And the inner diameter of the same may be characterized by the same size.

  Further, according to one aspect of the antifreeze water decanter according to the present invention, a water drain passage communicating with the outflow water channel portion and communicating with the outside is provided on the side above the upper and lower opening of the main body. The on-off valve for draining water, which opens and closes the draining passage, is configured by fitting a ring packing on a portion above the nozzle with respect to a portion constituting the on-off valve for water flow. It can be done.

  According to the antifreeze water decanter according to the present invention, in the simple configuration, the nozzle for opening and closing the water flow passage can be inserted again and more easily and properly in the operation of inserting the nozzle. It has the special advantage of being able to

It is sectional drawing which shows the state at the time of inserting the nozzle of the embodiment of the antifreeze water tap according to the present invention. It is sectional drawing which shows the state at the time of water flow concerning the embodiment of FIG. It is sectional drawing which shows the state at the time of draining concerning embodiment of FIG. It is sectional drawing which shows the state (The state in the middle of the insertion of a nozzle, or the state in the middle of extraction of a nozzle) which the nozzle concerning the form of FIG. 1 is displaced upward.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the antifreeze water decanter according to the present invention will be described in detail based on the attached drawings (FIGS. 1 to 4). In this nonfreezing water removal plug, a ring packing 30 is fitted to the nozzle 20 and a water on-off valve 21 provided in a spool valve shape opens and closes the water passage 11, and the ring packing 30 is periodically used. As a result, it is necessary to pull out the ring packing 30 together with the nozzle 20 and to insert it again.

  This antifreeze drainer comprises a main body 10 forming a water passage 11 continuous from an inflow water passage portion 12 provided in one side portion 10a to an outflow water passage portion 13 provided in the other side portion 10b, Opening and closing the water passage 11 and opening and closing the drainage passage 17 can be performed by vertically operating the nozzle 20 inserted and disposed from above the 10. This antifreeze drain is mainly connected to the water pipe, the inflow water passage 12 is connected to the piping on the water main side, and the outflow water passage 13 is connected to the piping on the water tap It has become.

  An upper and lower opening 15 is provided in the middle of the water flow passage 11 so that the inner peripheral surface is the seal circumferential surface 15a, and the nozzle 20 is inserted from above into the upper and lower opening 15 And the ring packing 30 for watertight sealing by being in sliding contact with the seal circumferential surface 15a is fitted to a portion corresponding to the upper and lower openings 15 of the nozzle 20. An on-off valve 21 for water is configured. In the present embodiment, the ring packing 30 is an O-ring, and is fitted in a circumferential groove provided in the middle of the nozzle 20.

  Further, when the nozzle 20 is pulled out for maintenance, the upper and lower openings 15 and the inflow water passage 12 located below the upper and lower openings 15 are closed in communication with the inflow communication port 16. A water stop valve 40 is disposed in the inflow water passage portion 12 so that the inflow communication port 16 can be closed by being displaced inward by the pressure of the inflow water. On the inner surface of the inflow water passage portion 12, as shown in the respective drawings, a plurality of horizontal streak-like linear guide portions 12 a that guide the displacement of the water shutoff valve 40 so as not to resist the flow of inflow water (FIGS. ) Are formed at radial positions.

  Further, the ring packing 32 is formed on the inner peripheral surface 19 a of the lower end side inserted portion 19 formed lower than the inflow communication port 16 of the main body 10 when the lower end portion 25 of the nozzle 20 is used during water flow and draining. In a vertically sealed state. Since the nozzle 20 is a rod-shaped member extending vertically, the lower end portion 25 of the nozzle 20 and the on-off valve 21 for water flow move up and down together (simultaneously and at the same distance). It will be.

  Further, when the nozzle 20 is displaced downward as shown in FIGS. 2 and 3, a required portion below the water on-off valve 21 resists the water shut-off valve 40 against the pressure of the inflow water. It is formed in the outer diameter part 20a which can open the inflow communication port 16 by pushing away outward.

  And, as shown in FIG. 1, the nozzle 20 according to the present invention is when the nozzle 20 is withdrawn and reinserted for maintenance, and the ring packing 30 of the on-off valve 21 for water flow is from above From the on-off valve 21 for water flow of the nozzle so that the water shut-off valve 40 can be displaced in the inward direction to close the inflow communication port 16 and shut off water when sealing the upper and lower opening 15 by sealing. In the lower middle part, a constricted part 23 of a shape narrowed to a small diameter is formed.

  According to the antifreeze water decanter according to the present invention, the nozzle 20 for performing the opening and closing operation of the water passage 11 is again inserted while maintaining the simple configuration, and the maintenance of the opening and closing valve 21 for water flow is possible. When the ring packing 30 is displaced from above to seal the upper and lower openings 15 in a watertight manner, the water shutoff valve 40 closes the inflow communication port 16 and the pressure of the inflowing water is not applied to the ring packing 30. . Therefore, the nozzle 20 can be easily inserted when the ring packing 30 is inserted so as to make a watertight seal, and the ring packing 30 fitted and mounted to the nozzle 20 may be detached by water pressure due to the inflow water It also disappears. Therefore, there is a special advantage that the operation of inserting the nozzle 20 can be performed more easily and properly.

  Further, in the present embodiment, the downward conical surface portion 23a and the downward conical surface portion 23a are arranged such that the narrow portion 23 of the nozzle 20 is provided with conical slopes as guide surfaces on both upper and lower sides. Are formed in the form of a circumferential groove having a V-shaped cross section by the upward conical surface portion 23b formed continuously. Furthermore, in the present embodiment, the downward taper surface portion 25a is formed on the lower end portion 25 which is the tip end portion of the nozzle 20 so as to have a conical slope as a guide surface.

  According to this, the inflow communication port 16 can be smoothly opened and closed by the water stop valve 40. That is, at the time of maintenance in which the nozzle 20 is reinserted, when the ring packing 30 of the on-off valve 21 for water flow is displaced from above to seal the upper and lower openings 15 by watertight sealing, When the nozzle 20 is displaced downward from the state shown in FIG. 1 displaced inward so as to close the inflow communication port 16, the water shut off valve 40 is gradually pushed outward by the slope of the downward conical surface portion 23a. To be displaced. By this, the inflow communication port 16 is opened, and it is possible to smoothly shift to the water flowing state shown in FIG. 2 and the usage state in the water draining state shown in FIG. 3. Further, between the state shown in FIG. 1 and the state shown in FIG. 4 in which the nozzle 20 is displaced upward (in the middle of insertion or in the middle of extraction), the upward conical surface portion 23b and the downward tapered surface The displacement of the water shutoff valve 40 can be guided by the slope with the portion 25a, and the displacement of the state can be smoothly performed.

  Further, in the present embodiment, in the water shutoff valve 40, the portion that abuts against the nozzle 20 so as to be pushed away by the nozzle 20 is a convex portion 41 that protrudes so as to have a conical slope. The circumferential edge portion 42 a (see FIG. 1) of the root portion of the convex portion 41 is a ring-shaped portion that contacts the valve seat portion 16 a of the inflow communication port 16 to close the inflow communication port 16. Furthermore, in the present embodiment, the side opposite to the convex portion 41 is also provided with a slope having a conical surface shape, which is a conical surface receiving surface 43 (see FIG. 1) that receives water flow and water pressure. That is, the part which protruded so that a conical-surface-like slope may be provided in the left-right direction (both sides of the horizontal direction) of the water stop valve 40 of this example of a form is provided with the intermediate part 42 cylindrically.

  According to the water stop valve 40, the convex portion 41 is shaped so as to be easily guided by the constriction portion 23. Further, according to the convex part 41 of the water shutoff valve 40 and the conical receiving face 43, the resistance of the water flow can be reduced, and the water pressure can be easily received evenly. Can be smoothly displaced, and the response can be improved. Reference numeral 12 b denotes a spring ring, which is disposed as a stopper of the water shut off valve 40 so that the water shut off valve 40 stays in the inflow passage 12.

  Further, in the present embodiment, the nozzle 20 is provided in the shape of a spool valve, and the inner diameter of the inner peripheral surface (the seal peripheral surface 15a) of the upper and lower opening 15 and the inner peripheral surface 19a of the lower end inserted portion 19 The inner diameter is set to the same size. That is, the main body 10 of the present embodiment is formed with a vertical hole in a state of being opened in the vertical direction corresponding to the cylindrical hole of the sleeve of the spool valve system. The parts are provided at the same diameter.

  According to this, pressure is uniformly applied on both sides in the axial direction of the nozzle 20, and the nozzle 20 can be positioned in a neutral position in pressure. Therefore, when the nozzle 20 is operated to be displaced, it can be lightly operated without any large resistance. Therefore, operability can be improved.

In addition, 20b is a relief communication path, and when the lower end 25 of the nozzle 20 is displaced so as to be pushed into the lower end inserted portion 19, it becomes a passage for releasing the fluid present in the lower end inserted portion 19 ing.
Reference numeral 33 denotes a ring packing, which is fitted to the upper portion of the nozzle 20, and the nozzle 20 is displaced downward, and water (fluid) is used in flowing and draining. The upper end portion of the nozzle 20 is sealed so as not to leak to the operation unit 50 side.

  Further, in the present embodiment, a water drain passage 17 communicating with the outflow water channel portion 13 and communicating with the outside is provided in the side portion 10 c above the upper and lower opening 15 of the main body 10, and the water drain passage 17 is opened and closed. The on-off valve 22 for draining is constituted by the ring packing 31 being fitted in the upper part of the nozzle 20 rather than the part which comprises the on-off valve 21 for water flow.

  This configuration is equivalent to that of the prior art (for example, the water draining mechanism described in Patent Document 1 of the prior art document), and preferably has the on-off valve 22 for water draining in the nozzle 20 having a spool valve shape. It can be configured, and the drainage function can be provided simply and properly.

  The operation unit 50 of this embodiment is a lever mechanism 51 and is connected to the nozzle 20 via the operation lot 52. The lever mechanism 51 is equivalent to that disclosed in FIGS. 6 to 9 of Patent Document 1 (Japanese Patent No. 3731880) of the prior art document, and the description thereof is omitted.

  Note that the operation unit 50 is not limited to the lever mechanism 51 as in this embodiment, and a well-known operation mechanism is appropriately selected as long as the operation mechanism can be displaced and moved in the vertical direction and held. Of course, it can be adopted, for example, the mechanism of the up and down movement by the thrust lock mechanism and the mechanism of the up and down movement utilizing the retention by the hook mechanism can be adopted.

  As mentioned above, although the present invention has been variously described by citing preferred embodiments, the present invention is not limited to the above embodiments, and many modifications can be made without departing from the spirit of the present invention. Of course.

DESCRIPTION OF REFERENCE NUMERALS 10 main body 10 a one side 10 b other side 10 c upper side 11 water passage 12 inflow water passage 12 a streak guide portion 12 b spring ring 13 outflow water passage 15 upper and lower opening 15 a seal peripheral surface 16 inflow communication port 16 a valve Seat portion 17 drainage passage 19 lower end side inserted portion 19a inner circumferential surface 20 nozzle 20a outer diameter portion 20b relief communication passage 21 opening / closing valve for water flow 22 opening / closing valve for drainage 23 waist portion 23a downward conical surface portion 23b Upward conical surface 25 Lower end 25a Downward tapered surface 30 Ring packing (constitutes an on-off valve for water flow)
31 Ring packing (constitutes an on-off valve for draining)
32 Ring packing (seals the lower end of the nozzle)
33 Ring packing (seals the upper end of the nozzle)
DESCRIPTION OF SYMBOLS 40 Water stop valve 41 Convex part 42 Middle part 42a Circular peripheral part 43 Conical surface shaped receiving surface 50 Operation part 51 Lever mechanism 52 Operation lot

Claims (5)

It has a main body which forms a continuous water flow path from the inflow water channel part provided on one side to the outflow water channel part provided on the other side, and the nozzles inserted from above the main body are arranged up and down By operation, opening and closing of the water passage and opening and closing of the water drain passage can be performed, and in the middle portion of the water passage, upper and lower opening portions are provided which open vertically and whose inner peripheral surface becomes a seal peripheral surface. The nozzle is inserted into the upper and lower opening from above and is displaceable in the vertical direction, and the seal circumferential surface is in sliding contact with a portion corresponding to the upper and lower opening of the nozzle to form a watertight seal. The ring packing that performs the opening and closing is configured to form an on-off valve for water flow, and the inflow located below the upper and lower openings and the upper and lower openings when the nozzle is withdrawn for maintenance It was provided to communicate with the water channel A water stop valve for closing the inlet communication port is disposed in the inlet water passage portion so that the inlet communication port can be closed by being displaced inward by the pressure of the inflow water, and the lower end portion of the nozzle is And anti-freeze provided so as to be vertically displaceable in the state of being sealed on the inner peripheral surface of the lower end side inserted portion formed lower than the inflow communication port of the main body at the time of use at the time of draining In draining water,
When the nozzle is displaced downward, the required portion below the on-off valve for water flow pushes the water shut-off valve outward against the pressure of the inflow water, thereby the inflow communication port And the ring packing of the on-off valve for water flow is displaced from above when the nozzle is withdrawn and reinserted for maintenance. When the upper and lower openings are sealed in a watertight manner, the water shut-off valve can be displaced in the inward direction in order to close the water inlet communication port so as to close the water communication, the nozzle is below the on-off valve for water flow A non-freezing water removal plug characterized in that a constricted part having a shape narrowed to a small diameter is formed in an intermediate part.   A downward conical surface-like portion and an upward conical surface-like portion continuously formed under the downward conical surface-like portion so that the constriction portion includes a conical surface-like inclined surface as a guide surface on both upper and lower sides The antifreeze water decanter according to claim 1, wherein the cross section is formed in a V-shaped circumferential groove shape.   The said water stop valve WHEREIN: The site | part which contact | abuts to this nozzle so that it may be pushed away by the said nozzle is the convex part which protruded so that a conical-surface-like slope may be provided. Antifreeze drainer.   The nozzle is provided in the shape of a spool valve, and the inner diameter of the inner peripheral surface of the upper and lower opening and the inner diameter of the inner peripheral surface of the lower end inserted portion are the same size. The antifreeze water tap according to any one of Items 1 to 3.   In the side above the upper and lower opening of the main body, there is provided a water draining passage communicating with the outflow water channel portion and communicating with the outside, and a water draining on-off valve for opening and closing the water draining passage is The antifreeze water decanter according to any one of claims 1 to 4, characterized in that the ring packing is fitted to a portion above the nozzle rather than a portion constituting an on-off valve for water flow. .

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