Post hydrant, method of using post hydrant, and water discharge port cap with hole

Abstract

To provide a post hydrant capable of efficiently draining water in a fire hydrant, a method for using the post hydrant, and a water discharge port cap with a hole.SOLUTION: The ground type fire hydrant 1 comprises a fire hydrant body 2, a valve rod 3 arranged along the axial direction of the fire hydrant body 2 and provided with a main valve cap 6 at one end and a valve body 3a at the other end, a valve box 4 in which the valve body 3a is arranged and the valve body 3a opens and closes a flow passage by the rotation of the main valve cap 6, a plurality of water discharge ports 5, 5 to which a water discharge hose for discharging water flowing from a water pipe through the fire hydrant body 2 is connected, and a water discharge valve 7 for discharging water remaining in the fire hydrant body 2 to the outside after water discharge.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an above-ground fire hydrant, a method for using an above-ground fire hydrant, and a perforated outlet cap. [Background technology]

[0002] Aboveground fire hydrants are connected to water pipes buried underground and can supply water needed for firefighting above ground. For example, the aboveground fire hydrant described in Patent Document 1 includes a hydrant body, a water outlet, and a drain valve. The hydrant body includes a valve stem inserted into the hydrant body, a valve element attached to one end of the valve stem and tightly fitting against the inner periphery of the hydrant body to stop water flow, and a main valve cap attached to the other end of the valve stem that, when rotated, moves the valve stem and valve element in the same direction as the axial direction. Rotating the main valve cap opens and closes the flow path. The water outlet is an opening to which a water discharge hose is connected to discharge the water needed for firefighting. The drain valve discharges water remaining inside the hydrant body after discharge to the outside. The drain valve prevents the aboveground fire hydrant from freezing or rusting.

[0003] Some fire hydrants with multiple outlets, such as above-ground double-port fire hydrants and heavy snow fire hydrants, have outlet valves at each outlet to open and close the flow path. However, outlet valves have a large number of parts and take time to assemble, which increases manufacturing costs. On the other hand, a water outlet cap that covers the water outlet is known as a means for opening and closing the flow path of the water outlet. Because the water outlet can be opened and closed by removing the water outlet cap, the water outlet cap requires less assembly time and can reduce manufacturing costs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-314958 Summary of the Invention [Problem to be solved by the invention]

[0005] When a discharge cap is attached to the outlet after discharging water, air is prevented from entering the inside of the hydrant body, making it difficult for water to drain from the hydrant body to the outside through the drain valve. If the discharge cap is to be attached after the water inside the hydrant body is drained after discharging water, it is necessary to wait until all the water has been drained from the hydrant body before attaching the discharge cap, which makes the draining process cumbersome. In addition, there is no way to detect whether all the water has been drained from inside the hydrant body, making it difficult to know when to attach the discharge cap.

[0006] In light of these issues, the present invention aims to provide an above-ground fire hydrant that can efficiently drain water from the hydrant, a method for using the above-ground fire hydrant, and a perforated water outlet cap. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides an above-ground fire hydrant having a fire hydrant main body that is connected to a water pipe and rises from underground to above ground, a valve rod that has a main valve cap at one end and a valve body at the other end and is arranged along the axial direction of the fire hydrant main body, a valve box in which the valve body is arranged and which opens and closes with respect to the flow path by rotating the main valve cap, a plurality of water outlets that are arranged in a part of the fire hydrant main body that is exposed above ground and to which discharge hoses are connected that discharge water that flows in from the water pipe through the fire hydrant main body, and a drain valve that drains water remaining in the fire hydrant main body to the outside after discharging water, and is characterized by comprising: a non-hole water outlet cap that is attached to the water outlet and stops the water from flowing in; and a perforated water outlet cap that is attached to the water outlet and has air holes that pass through in the direction of water discharge.

[0008] According to the present invention, the perforated outlet cap has air holes for air to flow in, allowing air to be drawn into the interior of the hydrant body. This allows the air to push out any water remaining in the hydrant body, allowing it to be efficiently drained through the drain valve, even when the perforated outlet cap is attached immediately after discharging water. Furthermore, a non-perforated outlet cap is attached to outlets that are not connected to a water discharge hose during water discharge, preventing water from leaking from unused outlets during water discharge.

[0009] Furthermore, the present invention preferably provides a method for using an above-ground fire hydrant, comprising a confirmation step of confirming the type of water outlet cap attached to the water outlet, a water stopping step of attaching the non-perforated water outlet cap to a water outlet among the plurality of water outlets to which the water outlet hose is not connected, a preparation step of removing the perforated water outlet cap from the water outlet to be used for water discharge, a water discharge step of discharging water, and a cap attachment step of removing the water discharge hose and attaching the perforated water outlet cap to the water outlet after the water discharge step is completed.

[0010] According to the present invention, after the confirmation process, a non-hole outlet cap is attached to the outlet to which the water discharge hose is not connected. This prevents water from leaking from the unused outlet when discharging water. Furthermore, after the water discharge process is completed, a hole outlet cap is attached to the outlet from which the water discharge hose has been removed, allowing air to be drawn into the fire hydrant, allowing for efficient drainage.

[0011] The present invention also provides a perforated water outlet cap that is attached to the water outlet of an above-ground fire hydrant, comprising: a cap main body that closes the water outlet; a water stop member that stops water flowing in from the above-ground fire hydrant; a water stop member storage section that is provided in the cap main body and has a hollow section that stores the water stop member; an air hole that connects the water stop member storage section to the outside; and a through hole that allows water flowing in from the above-ground fire hydrant to flow into the water stop member storage section, wherein water flows into the water stop member storage section, bringing the water stop member into close contact with the air hole and sealing the air hole.

[0012] The present invention also provides an above-ground fire hydrant having a fire hydrant body that communicates with a water pipe and rises from underground to above ground, a valve rod that is disposed along the axial direction of the fire hydrant body and has a main valve cap at one end and a valve body at the other end, a valve box in which the valve body is disposed and which opens and closes with respect to a flow path by rotation of the main valve cap, a plurality of water discharge ports that are disposed in a part of the fire hydrant body that is exposed above ground and to which discharge hoses are connected that discharge water that flows in from the water pipe through the fire hydrant body, and a drain valve that drains water remaining in the fire hydrant body to the outside after water discharge. and a perforated water outlet cap that is attached to the water outlet and has an air hole that penetrates in the water discharge direction, wherein the perforated water outlet cap comprises a cap main body that closes the water outlet, a water stop member that stops water flowing in from the fire hydrant main body, a water stop member storage section that is provided in the cap main body and has a hollow section that stores the water stop member, an air hole that connects the water stop member storage section to the outside, and a through hole that allows water to flow into the water stop member storage section, and is characterized in that when water flows into the water stop member storage section, the water stop member is brought into close contact with the air hole and the air hole is sealed.

[0013] According to the present invention, the perforated water outlet cap is formed with air holes through which air can flow in, allowing air to be drawn into the interior of the hydrant body. This allows the air to push out any water remaining inside the hydrant body, even if the perforated water outlet cap is attached immediately after water discharge, allowing it to be efficiently drained through the drain valve. Furthermore, when water enters the water-stopping member storage compartment due to water discharge, the force of the water flow causes the water-stopping member to tightly contact the air hole, thereby stopping the water. Furthermore, once water discharge is complete, the water-stopping member moves away from the air hole, allowing air to circulate. Therefore, only one type of water outlet cap is required to be attached to the water outlet, eliminating the need for the hassle of replacing water outlet caps.

[0014] Furthermore, it is preferable that the water-stopping member is spherical and has an attachment member with a through hole communicating with the water-stopping member storage section, and that by attaching the attachment member to the cap main body section, the water-stopping member is positioned within the water-stopping member storage section while allowing water and air to circulate.

[0015] According to the present invention, the water outlet can be watertight using a water-stopping member with a simple structure.

[0016] It is also preferable that the plurality of water outlets are arranged at different heights in the portion of the fire hydrant body that is exposed above ground.

[0017] According to the present invention, when there is a lot of snow, the water discharge hose can be connected to a water discharge outlet at a higher position, and when there is little snow, the water discharge hose can be connected to a water discharge outlet at a lower position.

[0018] It is also preferable that the perforated water outlet caps are attached to all of the water outlets.

[0019] According to the present invention, only one type of water discharge cap is required to be attached to the water discharge outlet, eliminating the need to replace the water discharge cap. [Effects of the Invention]

[0020] According to the above-ground fire hydrant, the method of using the above-ground fire hydrant, and the perforated outlet cap of the present invention, water inside the fire hydrant can be efficiently drained. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a side cross-sectional view (half cross-section) showing a ground-type fire hydrant according to a first embodiment of the present invention. [Figure 2] 1 is a cross-sectional view showing a holeless water outlet cap according to a first embodiment of the present invention. [Figure 3] 1 is a perspective view showing a perforated water outlet cap according to a first embodiment of the present invention. FIG. [Figure 4] 1 is a cross-sectional view showing a perforated water outlet cap according to a first embodiment of the present invention. FIG. [Figure 5] FIG. 2 is a flowchart showing a method for using the ground-type fire hydrant according to the first embodiment of the present invention. [Figure 6] FIG. 10 is a side cross-sectional view showing a perforated water outlet cap according to a second embodiment of the present invention. [Figure 7] FIG. 10 is an enlarged cross-sectional view showing a perforated water outlet cap according to a second embodiment of the present invention. [Figure 8] FIG. 10 is a cross-sectional view showing a water-stopping state of a perforated water outlet cap according to a second embodiment of the present invention. [Figure 9] FIG. 10 is a cross-sectional view showing a modified example of the water-stopping member storage section according to the second embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view showing a modified example of the water-stopping member storage section according to the second embodiment of the present invention. [Figure 11] FIG. 10 is a cross-sectional view showing a modified example of the water-stopping member storage section according to the second embodiment of the present invention. [Figure 12] FIG. 10 is a side view showing a ground-type fire hydrant according to a third embodiment of the present invention. [Figure 13] FIG. 10 is a side view showing a state in which a part of a ground-type fire hydrant according to a third embodiment of the present invention is buried in snow. DETAILED DESCRIPTION OF THE INVENTION

[0022] First Embodiment Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals, and duplicated descriptions will be omitted as appropriate.

[0023] As shown in Figure 1, the ground-type fire hydrant 1 of this embodiment includes a fire hydrant main body 2, a valve stem 3, a valve box 4, water outlets 5, 5, a main valve cap 6, a drain valve 7, a water outlet cap 10 without a hole, and a water outlet cap 20 with a hole.

[0024] The hydrant main body 2 comprises an upper main body (upper body) 2a that is exposed above ground level GL, and a lower main body (straight pipe) 2b that extends from the upper main body 2a and is buried underground. The upper main body (upper body) 2a and the lower main body (straight pipe) 2b are connected via a connecting member. The interior of the hydrant main body 2 is hollow, and a valve stem 3 is arranged inside the hydrant main body 2 along its axial direction. The hydrant main body 2 according to this embodiment is structured with a knockdown safety device that prevents water leakage in the event of a collision with a car or the like, but as this is a well-known configuration, detailed description thereof will be omitted.

[0025] The valve stem 3 has a main valve cap 6 at one end (above ground) and a valve body 3a at the other end (underground). The main valve cap 6 is located on top of the hydrant main body 2. The main valve cap 6 is formed with an opener mounting shaft 6a that engages with an opener (not shown) used to open and close the flow path. By rotating the opener mounting shaft 6a with the opener, the valve stem 3 and valve body 3a can be rotated.

[0026] The valve box 4 is a component that forms a flow path and has one end connected to the bottom of the lower main body portion (straight pipe) 2b and the other end connected to a water pipe (not shown). Inside the valve box 4, there is provided a valve box valve seat 4a with which the valve element 3a is in close contact or spaced apart. At the other end of the valve box 4, there is provided a flange 4b ​​that is connected to the water pipe (not shown).

[0027] The water outlet 5 is provided on the upper side of the upper main body portion 2a and is an opening to which a water discharge hose (not shown) is connected, which discharges water flowing in from a water pipe through the hydrant main body portion 2. The above-ground fire hydrant 1 of this embodiment is a double-port above-ground fire hydrant with two water discharge outlets 5, 5 formed. The two water discharge outlets 5, 5 open in opposite directions and are provided at the same height. A water discharge outlet fitting 5a is attached to the water outlet 5. Water can be discharged by connecting a water discharge hose to the water discharge outlet 5 via the water discharge outlet fitting 5a. When water is not being discharged, a non-hole water discharge outlet cap 10 is attached to one of the water discharge outlets 5, and a perforated water discharge outlet cap 20 is attached to the other.

[0028] The drain valve 7 is a valve that drains water remaining in the hydrant main body 2 to the outside after water discharge. In this embodiment, by rotating the main valve cap 6 in a direction that closes the flow path, the lever of the drain valve (not shown) is pushed down, opening the drain valve 7. In other words, by closing the main valve cap 6 after water discharge is complete, the water remaining in the hydrant main body 2 is automatically drained.

[0029] (Holeless outlet cap) The holeless water outlet cap 10 is a water outlet cap with water-stopping properties that is attached to one side of the water outlet 5. The holeless water outlet cap 10 is connected to the upper main body part (upper trunk) 2a via a chain C. As shown in FIG. 2, the holeless water outlet cap 10 includes a cap main body part 11, a protrusion part 12, and an insertion part 13.

[0030] The cap body 11 has a generally truncated cone shape and is hollow inside. The cap body 11 is the part that covers the outer periphery of the water outlet fitting 5a. A convex portion 12 that protrudes from the cap body 11 is formed in the center of the cap body 11. The convex portion 12 has a quadrangular pyramid shape and is solid inside. A cylindrical insertion portion 13 that protrudes into the hollow interior of the cap body 11 is formed in the hollow interior of the cap body 11. A thread groove that screws into the water outlet fitting 5a is formed on the outer periphery of the insertion portion 13. A ring-shaped waterproofing member such as rubber may be provided on the radially outer side of the insertion portion 13.

[0031] (Perforated outlet cap) The perforated water outlet cap 20 is a water outlet cap that is attached to the other water outlet 5. The perforated water outlet cap 20 is connected to the upper main body portion (upper trunk) 2a via a chain C. As shown in Figures 3 and 4, the perforated water outlet cap 20 includes a cap main body portion 21, a protrusion 22, an insertion portion 23, and an air hole 24.

[0032] The cap main body 21 has a generally truncated cone shape and is hollow inside. The cap main body 21 covers the outer periphery of the water outlet fitting 5a. The protrusion 22 has a quadrangular pyramid shape and protrudes from the cap main body 21. As shown in FIG. 4, the perforated water outlet cap 20 is formed so that it is hollow from the cap main body 21 to the protrusion 22. A cylindrical insertion part 23 that protrudes into the hollow interior of the cap main body 21 is formed inside the hollow. A thread groove that screws into the water outlet fitting 5a is formed on the outer periphery of the insertion part 23.

[0033] The convex portion 22 has an air hole 24 formed therein, penetrating inward and outward in the direction of water discharge. The air hole 24 is a hole for taking in air from the outside. In other words, the air hole 24 is connected to the water discharge port 5. Therefore, air flowing in from the air hole 24 passes through the hollow interior of the convex portion 22 and the cap main body 21 and enters the hydrant main body 2. The air that flows into the hydrant main body 2 is discharged together with water from the drain valve 7. The shape of the air hole 24 may be any shape, and it is fine enough to take in only air. In this embodiment, the inner diameter of the air hole 24 is approximately 1 / 6 the diameter of the tip of the convex portion 22.

[0034] (How to use ground-type fire hydrants) Next, a method for using the above-ground fire hydrant of this embodiment will be described. As shown in Fig. 5, the method for using the above-ground fire hydrant of this embodiment involves a confirmation step S1, a water stopping step S2, a preparation step S3, a water discharge step S4, and an installation step S5. Note that this embodiment illustrates a case where a water discharge hose is connected to only one of the two water discharge ports 5.

[0035] In the confirmation step S1, the type of water discharge cap attached to the water discharge outlet 5 to which no water discharge hose is attached is confirmed. In other words, it is confirmed whether the water discharge cap of the water discharge outlet 5 to which no water discharge hose is attached is the holeless water discharge outlet cap 10. If the holeless water discharge outlet cap 10 is attached to the water discharge outlet 5 to which no water discharge hose is attached, the process proceeds to the preparation step S3.

[0036] If a holeless water outlet cap 10 is not attached to a water outlet 5 to which a water discharge hose is not attached, that is, if a holed water outlet cap 20 is attached, the holeless water outlet cap 10 is attached to the water outlet 5 to which a water discharge hose is not attached (water stopping process S2).

[0037] In the preparation step S3, the perforated water outlet cap 20 is removed from the water outlet 5 to which the water discharge hose is to be attached, and the water discharge hose is connected. Once the water discharge hose has been connected, the process proceeds to the water discharge step S4. In the water discharge step S4, the opener mounting shaft 6a is rotated forward using an opener (not shown) to open the valve and discharge water. When water discharge is complete, the opener mounting shaft 6a is rotated backward using an opener (not shown) to close the valve. This valve closing operation drains any water remaining in the hydrant main body 2 from the drain valve 7.

[0038] In the attachment step S5, the perforated water outlet cap 20 is attached to the water outlet 5 from which the water discharge hose has been removed. Once the perforated water outlet cap 20 is attached to the water outlet 5, the work is completed.

[0039] In the above-ground fire hydrant 1 of this embodiment described above, a perforated outlet cap 20 is attached to the outlet 5 to which a discharge hose is connected. The perforated outlet cap 20 has air holes 24 formed therein that penetrate in the direction of water discharge, allowing air to be drawn into the interior of the hydrant main body 2. As a result, even if the perforated outlet cap 20 is attached immediately after water is discharged, the air drawn into the interior of the hydrant main body 2 through the air holes 24 pushes out any water remaining in the hydrant main body 2, allowing efficient drainage through the drain valve 7. In addition, an unperforated outlet cap 10 that seals the outlet 5 is attached to the outlet 5 to which no discharge hose is connected, preventing water from leaking from the hydrant main body 2 while water is being discharged.

[0040] Furthermore, the shape of the air hole 24 is very small compared to the water outlet 5. Therefore, by attaching the perforated water outlet cap 20 to the water outlet 5 after water is discharged, it is possible to allow air to flow in through the air hole 24 while preventing dust, foreign matter, etc. from entering the water outlet.

[0041] The method of using an above-ground fire hydrant involves a confirmation step S1, followed by a water-stopping step S2 in which a non-perforated water outlet cap 10 is attached to the water outlet 5 to which the water discharge hose is not connected. A preparation step S3 is then performed in which a perforated water outlet cap 20 is removed from the water outlet 5 to be used for water discharge, followed by a water discharge step S4. This prevents water from leaking from the hydrant main body 2 during water discharge. After the water discharge step S4 is completed, an attachment step S5 is performed in which a perforated water outlet cap 20 is attached to the water outlet from which the water discharge hose has been removed, allowing air to be drawn into the hydrant main body 2, enabling efficient drainage.

[0042] In this embodiment, a case where a water discharge hose is connected to only one of the water discharge ports 5, 5 has been described, but water discharge hoses may be connected to both. Even in this case, after water is discharged, the water discharge ports 5, 5 are closed by the non-perforated water discharge port cap 10 and the perforated water discharge port cap 20, respectively. This allows air to enter the fire hydrant main body 2 through the perforated water discharge port cap 20 attached to one of the water discharge ports 5, allowing for efficient drainage.

[0043] Second Embodiment Next, a ground-type fire hydrant according to a second embodiment will be described. The ground-type fire hydrant according to this embodiment uses two perforated outlet caps 30. That is, a perforated outlet cap 30 is attached to each of the outlets 5, 5.

[0044] 6 and 7, the perforated water outlet cap 30 includes a cap body 31, a protrusion 32, an air hole 34, a water stop member 35, a water stop member storage section 36, and an attachment member 40. The perforated water outlet cap 30 is of a plug-in type (Machino type) that is fitted to the water outlet 5.

[0045] The cap body 31 is cylindrical and hollow. The protrusion 32 is a portion that protrudes from the center of the cap body 31. The protrusion 32 has an air hole 34 that penetrates inward and outward in the direction of water discharge. The air hole 34 is a hole for taking in air from the outside, and is connected to a hollow water-stopping member storage section 36 formed inside the cap body 31 and the protrusion 32.

[0046] The water-stopping member 35 of this embodiment is formed from a spherical metal material. The water-stopping member 35 is formed with a diameter larger than the inner diameter of the air hole 34, and is a member that seals (stops water from entering) the air hole 34 by coming into close contact with the air hole 34. The shape and material of the water-stopping member 35 may be any as long as it can stop water. The water-stopping member 35 can be formed from, for example, metal, rubber, resin, etc., but is preferably formed from stainless steel, which is resistant to rust.

[0047] The water-stopping member storage section 36 is a hollow section extending from the cap body 31 to the protrusion 32. The water-stopping member storage section 36 includes a small-diameter section 36a and a large-diameter section 36b. The small-diameter section 36a is a section formed continuously from the air hole 34 and is a section for accommodating the water-stopping member 35. The small-diameter section 36a is formed larger than the water-stopping member 35 to allow the water-stopping member 35 to move freely. The large-diameter section 36b is a section formed continuously from the small-diameter section 36a and is formed with a larger diameter than the small-diameter section 36a. The rear end (on the water outlet 5 side) of the large-diameter section 36b is open and communicates with the water outlet 5. The shape of the water-stopping member storage section 36 is not limited to that of the present embodiment and may be appropriately set, for example, to a shape formed with a uniform inner diameter throughout (see FIG. 9), a shape that tapers toward the air hole 34 (see FIG. 10), or a spherical shape (see FIG. 11).

[0048] The mounting member 40 has a thread on the side (not shown). The mounting member 40 is attached to the rear end of the large diameter portion 36b (waterstopping member storage portion 36) and is connected to the cap main body 31 by screwing into the thread on the inner surface of the large diameter portion 36b. Attaching the mounting member 40 prevents the waterstopping member 35 from being ejected from the waterstopping member storage portion 36.

[0049] The mounting member 40 has a through hole 41 formed therein that penetrates in the water discharge direction. The through hole 41 is a hole that communicates with the fire hydrant main body 2. The through hole 41 is formed to have a smaller diameter than the water-stopping member 35. Water flowing from the fire hydrant main body 2 passes through the through hole 41 and flows into the water-stopping member storage section 36.

[0050] Next, the effects of this embodiment will be described. As shown in Fig. 8, when water is discharged, water flows into the through-hole 41 of the perforated water discharge cap 30 and the water-stopping member storage section 36. The water that has flowed into the through-hole 41 of the perforated water discharge cap 30 and the water-stopping member storage section 36 moves the water-stopping member 35 from the water discharge outlet 5 toward the air hole 34. The force of the flow brings the water-stopping member 35 into close contact with the air hole 34, and the air hole 34 is watertight (sealed). This makes it possible to prevent water from leaking to the outside from the perforated water discharge cap 30 when water is discharged.

[0051] After water discharge has finished, water-stopping member 35 moves away from air hole 34 under its own weight, leaving air hole 34 in a communicating state. As a result, even if perforated water outlet cap 30 is attached to water outlet 5 immediately after water discharge, the air taken into hydrant main body 2 through air hole 34 pushes out the water accumulated inside hydrant main body 2, allowing it to be efficiently drained from drain valve 7.

[0052] The water-stopping member 35 is spherical and has an attachment member 40 with a through-hole 41 that communicates with the water-stopping member storage section 36. This allows the water-stopping member 35 to be held within the water-stopping member storage section 36 without impeding air circulation. Furthermore, the spherical water-stopping member 35 is not limited in the direction or angle at which it can stop water, so it can reliably stop water when a water discharge occurs. The attachment member 40 makes it easy to form the water-stopping member storage section 36 and enables the water-stopping member 35 to be replaced.

[0053] Furthermore, the water-stopping member storage section 36 has a small diameter section 36a and a large diameter section 36b. As a result, when air flows into the air hole 34, the water-stopping member 35 moves toward the large diameter section 36b, so that the water-stopping member 35 does not come into close contact with the through-hole 41, and air can be taken in efficiently.

[0054] Furthermore, in this embodiment, the perforated water outlet caps 30, 30 can be attached to all of the water outlets 5 (water outlets 5, 5). That is, in this embodiment, one perforated water outlet cap 30 can serve both to stop water and to take in air. Therefore, only one type of water outlet cap, the perforated water outlet cap 30, needs to be attached, eliminating the need to replace water outlet caps and the hassle of doing so.

[0055] For example, in this embodiment, the perforated water outlet caps 30, 30 are attached to both of the water outlets 5, 5, but the perforated water outlet cap 30 may be attached to one and the non-perforated water outlet cap 10 to the other. Also, in this embodiment, the mounting member 40 is screwed onto the large diameter portion 36b, but the mounting member 40 may be welded to the large diameter portion 36b. Instead of the mounting member 40, the water stop member storage section 36 may be formed by integrally molding the rear end of the large diameter portion 36b so that its diameter is smaller than that of the water stop member 35.

[0056] Third Embodiment Next, a third embodiment of the present invention will be described with reference to Figures 12 and 13. The structure of the portion buried underground is the same as that of the first embodiment (see Figure 1), so the drawings and description will be omitted. The third embodiment will be described mainly with respect to the differences from the first embodiment. Figure 12 shows the case where there is little snow S, and Figure 13 shows the case where there is much snow S.

[0057] The above-ground fire hydrant 1A of this embodiment is the same as the first embodiment in that it has two water outlets, but differs from the first embodiment in that the height positions of the water outlets are different. That is, the water outlets of the above-ground fire hydrant of this embodiment include a first water outlet 51 that is located at a high position and a second water outlet 52 that is located at a low position. The above-ground fire hydrant 1A is a above-ground fire hydrant installed in areas with heavy snowfall, and the position of the water outlet to be used is selected depending on the amount of snowfall.

[0058] Perforated outlet caps 30 (FIG. 6) are attached to the first outlet 51 and the second outlet 52. The height positions of the first outlet 51 and the second outlet 52 can be set as appropriate, but for example, the first outlet 51 is provided at a position about 2 m above ground level, and the second outlet 52 is provided at a position about 0.5 m above ground level.

[0059] A gear shaft cap 61 covered by a protective cap 60 is provided between the first water outlet 51 and the second water outlet 52. The gear shaft cap 61 is engaged with the valve stem 3 via a gear. By removing the protective cap 60 connected to the chain C and rotating the gear shaft cap 61 with a valve opener (not shown), the valve body 3a can be rotated and the flow path can be opened or closed.

[0060] In the above-ground fire hydrant 1A of this embodiment, when the amount of snowfall is small, as shown in Figure 12, the height to the main valve cap 6 is large (more than 2 m), making it difficult to rotate the main valve cap 6 with a cap opener. Therefore, by providing a gear shaft cap 61 near the middle position, it becomes possible to open and close the flow path even when the amount of snowfall is small. Note that if the height of the entire fire hydrant is low, that is, if the main valve cap 6 is at a height that allows easy access, the gear shaft cap 61 may be omitted.

[0061] Next, how to use the above-ground fire hydrant 1A when the amount of snowfall is small (FIG. 12) and when the amount of snowfall is large (FIG. 13) will be described.

[0062] As shown in Figure 12, when the amount of snowfall is small, snow S does not accumulate up to the height of second water outlet 52, so the perforated water outlet cap 30 attached to second water outlet 52 is removed and a water outlet hose is attached to discharge water. Because the perforated water outlet cap 30 is attached to first water outlet 51, which does not have a water discharge hose attached, the water stop member 35 moves and comes into close contact with air hole 34 during water discharge, as shown in Figure 8, thereby stopping the water. After water discharge is complete, the water discharge hose is removed and the perforated water outlet cap 30 is attached to second water outlet 52. This allows air to flow in through air hole 34 in perforated water outlet cap 30, allowing it to be efficiently drained via drain valve 7 (see Figure 1).

[0063] As shown in Figure 13, when there is a heavy snowfall, snow S accumulates up to the height of second water outlet 52, making it impossible to use second water outlet 52. Therefore, perforated water outlet cap 30 attached to first water outlet 51 is removed and a water outlet hose is attached to discharge water. Since perforated water outlet cap 30 is attached to second water outlet 52 to which no water discharge hose is attached, water stop member 35 moves and fits tightly to air hole 34 during water discharge, as shown in Figure 8, thereby stopping water. After water discharge is complete, the water discharge hose is removed and perforated water outlet cap 30 is attached to first water outlet 51. This allows air to flow in through air hole 34 in perforated water outlet cap 30, allowing it to be efficiently drained via drain valve 7 (see Figure 1).

[0064] The above-described above-ground fire hydrant 1A can achieve substantially the same effects as the first embodiment. Furthermore, in this embodiment, only one type of outlet cap, the perforated outlet cap 30, is required, eliminating the need for replacing the outlet cap. Furthermore, the multiple outlets are located at different heights in the portion of the hydrant body 2 that is exposed above ground. That is, the above-ground fire hydrant 1A includes a first outlet 51 located at a higher position and a second outlet 52 located at a lower position. This allows the first outlet 51, located at a higher position, to be used even if the second outlet 52, located at a lower position, is buried in snow S, for example.

[0065] Although the embodiments of the present invention have been described above, appropriate design changes are possible within the scope of the invention. For example, the above-mentioned above-mentioned above-ground fire hydrant has two outlets 5, but it may have three or more outlets and be fitted with perforated outlet caps 20, 30. [Explanation of symbols]

[0066] 1. Ground-mounted fire hydrant 2. Fire hydrant body 3 Valve stem 4 Valve box 5. Water outlet 6 Main valve cap 7. Drain valve 10. Holeless outlet cap 20 Perforated outlet cap 24 air vents 30 Perforated outlet cap 34 Air vent 35 Water-stopping material 40 Mounting material

Claims

1. a fire hydrant body that is connected to a water pipe and rises above ground; A valve rod having a main valve cap at one end and a valve body at the other end, the valve rod being arranged along the axial direction of the fire hydrant body; a valve body in which the valve element is disposed and in which the valve element opens and closes relative to the flow path by rotation of the main valve cap; A plurality of water outlets are provided in a portion of the fire hydrant main body exposed above ground, and to which water discharge hoses are connected to discharge water flowing in from the water pipe through the fire hydrant main body; A ground-type fire hydrant having a drain valve that drains water remaining in the fire hydrant body to the outside after water discharge, A holeless water outlet cap attached to the water outlet to stop water from entering the water outlet; A ground-type fire hydrant comprising: a perforated water outlet cap attached to the water outlet and having air holes passing through in the water discharge direction.

2. A method for using the above-ground fire hydrant according to claim 1, a confirmation step of confirming the type of water outlet cap attached to the water outlet; a water stopping step of attaching the holeless water outlet cap to the water outlet to which the water discharge hose is not connected, among the plurality of water outlets; a preparation step of removing the perforated water outlet cap from the water outlet to be used for water discharge; a water discharge process for discharging water; a cap attachment step of removing the water discharge hose and attaching the perforated water discharge cap to the water discharge outlet after the water discharge step is completed.

3. A perforated outlet cap attached to the outlet of an above-ground fire hydrant, a cap body that closes the water outlet; A water-stopping member that stops water flowing in from the above-ground fire hydrant; a water-stopping member storage section provided in the cap body section and including a hollow section for storing the water-stopping member; an air hole that connects the water-stopping member storage section to the outside; a through hole through which water flowing in from the above-ground fire hydrant flows into the water-stopping member storage section, A perforated water outlet cap characterized in that water flows into the water-stopping member storage portion, causing the water-stopping member to come into tight contact with the air hole, thereby sealing the air hole.

4. The water-stopping member has a spherical shape, a mounting member having the through hole communicating with the water-stopping member storage portion; The perforated water outlet cap according to claim 3, characterized in that by attaching the mounting member to the cap body, the water-stopping member is positioned within the water-stopping member storage section while allowing water and air to circulate.

5. a fire hydrant body that is connected to a water pipe and rises above ground from underground; A valve rod having a main valve cap at one end and a valve body at the other end, the valve rod being arranged along the axial direction of the fire hydrant body; a valve body in which the valve element is disposed and in which the valve element opens and closes relative to the flow path by rotation of the main valve cap; A plurality of water outlets are provided in a portion of the fire hydrant body that is exposed above ground, and to which water discharge hoses are connected to discharge water that flows in from the water pipe through the fire hydrant body; A ground-type fire hydrant having a drain valve that drains water remaining in the fire hydrant body to the outside after water discharge, a perforated water outlet cap attached to the water outlet and having air holes passing through in the water discharge direction; The perforated water outlet cap is a cap body portion that closes the water outlet; A water-stopping member that stops water flowing in from the fire hydrant main body; a water-stopping member storage section provided in the cap body section and including a hollow section for storing the water-stopping member; an air hole that connects the water-stopping member storage section to the outside; a through hole for allowing water to flow into the waterstop member storage section, A ground-type fire hydrant, characterized in that water flows into the water-stopping member storage portion, causing the water-stopping member to come into tight contact with the air hole and sealing the air hole.

6. The above-ground fire hydrant according to claim 5, wherein the plurality of water outlets are arranged at different heights in the portion of the fire hydrant body exposed above ground.

7. 6. The above-ground fire hydrant according to claim 5, wherein the perforated outlet caps are attached to all of the outlets.

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