JP5858214B2 - Air intake valve for water supply device and water supply device - Google Patents

Description

  The present invention relates to an air intake valve for a water supply device and a water supply device that are used in a water supply device that sucks up water stored in a water tank into a pipeline and supplies the water.

  Normally, when water is supplied for watering a plant planted in a garden or a planter, a hose is connected to a water tap and the water is supplied from the tip of the hose. A valve with a timer that is operated by a timer is attached in the middle of a faucet or a hose so that water can be automatically sprayed at a desired time for a desired time (for example, see Patent Document 1).

  On the other hand, when supplying water for watering plants planted in planters or flowerpots on a veranda without a water tap nearby, carry water supply containers such as rain dew that contain water to the veranda etc., and water each plant. Like to do. However, such watering methods require labor to carry heavy water, especially when many plants are planted, because only a small amount of water can be carried at a time. Cost.

  When there is no faucet that can supply water in this way, as a means of supplying water for watering without carrying the water, the water stored in the water tank is sucked up to the pipe such as a hose by a pump. A water supply device for supplying water from the tip of a pipe line is known.

Japanese Patent No. 4359937

  The water supply device that sucks up the water stored in the water tank and supplies it to the pipe with a pump can supply water easily even when there is no tap faucet that can supply water. If the open tip is lower than the water level of the water tank, even if the pump is stopped, the water in the water tank is sucked up into the pipeline by the siphon action, and the water supply from the tip of the pipeline cannot be stopped. is there.

  In order to stop water supply from the tip of the pipe line due to the siphon action of sucking up water in the water tank into the pipe line, it is conceivable to provide a valve such as an electromagnetic valve in the middle of the pipe line. When an automatic valve such as this is used, the water supply device becomes expensive. When using an inexpensive manual valve, it takes extra time to open and close the valve. In addition, when a pump with a timer that operates with a timer is used so that water can be automatically supplied for a desired time at a desired time, a manual valve cannot be used. It is necessary to interlock with the attached pump, and the water supply device becomes more expensive.

  Accordingly, an object of the present invention is a water supply device that sucks up water stored in a water tank into a pipeline and supplies the water, and automatically stops water supply from the tip of the pipeline with an inexpensive configuration when the pump is stopped. Is to be able to.

In order to solve the above-described problem, an air intake valve for a water supply apparatus according to the present invention is used in a water supply apparatus that sucks up water stored in a water tank into a pipe line using a pump and supplies water from the tip of the pipe line, In the air intake valve for a water supply device , which is provided in the middle of the pipe and draws air into the pipe when the pump stops, the pipe is placed on one of the side part of the cylindrical valve box and one bottom part. A water supply port connected to the upstream side of the passage is provided, a drainage port connected to the downstream side of the pipeline is provided on the other side, an air hole is provided on the bottom of the other side, and the valve body housed in the valve box is When the pressure of water supplied from the water supply port is moved to the other bottom side and pressed against the valve seat around the air hole, when the pump stops and the water pressure in the valve box disappears, One bottom side so that the valve body draws air from the air hole It is assumed to move, and is provided in a valve shaft that is inserted into the air hole of the valve box and slides in the cylinder axis direction of the valve box. The valve body is provided on the valve shaft, and is inserted into the valve box. A shield plate that covers the cross-section of the cylindrical valve box is provided at the end of the valve shaft, and the shield plate is moved in the cylinder axis direction together with the valve shaft, and is provided on the one bottom portion. The structure which attached the filter which has the convex part which prevents the said shielding board to obstruct | occlude the said water supply port or the said water discharge port to the said water supply port or the said water discharge port was employ | adopted.

  In other words, an air intake valve that draws air into the pipe when the pump stops is provided in the middle of the pipe of the water supply device that sucks up water stored in the water tank into the pipe using the pump and supplies water from the tip of the pipe As a result, the air drawn in the middle of the pipeline blocks the siphon action that sucks up the water in the tank into the pipeline, and water supply from the tip of the pipeline can be automatically stopped with an inexpensive configuration. .

When the pump stops and the water pressure in the valve box disappears, the water in the valve box flows out of the water supply port and drainage port by gravity, and the valve body separates from the valve seat so as to draw air from the air hole. The external air is drawn into the valve box from the air hole, the watertight state in the valve box is eliminated, and the siphon action is naturally cut off. Water supply from the tip of the can be automatically stopped with an inexpensive configuration.

A valve shaft that is fitted into the air hole of the valve box and slides in the cylinder axis direction of the valve box is provided, and by providing the valve body on the valve shaft, the movement of the valve body can be guided smoothly. In addition, it is possible to suppress entry of foreign matter from the air hole into the valve box. In addition, when the pump starts operating, the water pressure from the water supply port is received by the shielding plate, and the valve body of the valve shaft is pressed against the valve seat quickly to suppress water leakage from the air hole and when the pump is stopped. The shield plate can be moved to the opposite side of the air hole on the water flowing out of the valve box by gravity, and the valve body of the valve shaft can be quickly detached from the valve seat. Further, the other bottom portion is provided at the top of the valve box, and a weight is mounted on the valve shaft so as to promote the lowering of the valve shaft due to gravity.

  Since the valve body is an O-ring that is externally fitted to the valve shaft, it can be obtained at a low cost and can be attached to the valve shaft without using an adhesive or the like, so that the valve body can be easily formed. . A generally available sealing member such as a rubber packing may be used as the valve body.

  By providing the shield plate with through holes penetrating the front and back, the shield plate can be moved more quickly to the opposite side of the air hole when the pump is stopped. The reason for this is that immediately after the pump is stopped, the water in the valve box exists on both sides of the shielding plate, but the water flow when the water present on the air hole side escapes to the outflow side through this through hole is shielded. This is to promote the movement of the board. If this through hole is too large, there is no effect, and when the diameter is in the range of 1.5 to 2.5 mm, the effect of accelerating the movement of the shielding plate is maximized, and air is more quickly introduced into the valve box. You can pull in.

  By providing means for restricting the movement position of the shielding plate to the one bottom side to the position on the other bottom side of the water supply port, when the pump is operated again, the water pressure from the water supply port is reduced. The shielding plate can be quickly moved to the bottom side where the air holes are provided, and water leakage from the air holes can be suppressed.

  Moreover, the water supply apparatus which concerns on this invention employ | adopted the structure using one of the air intake valves for water supply apparatuses mentioned above.

  The air intake valve for a water supply apparatus according to the present invention is configured such that when the pump stops in the middle of a water supply apparatus pipe that sucks up water stored in a water tank into a pipe line and supplies water from the tip of the pipe line. Since air is drawn into the passage, the siphon action of sucking up the water in the water tank to the pipeline can be cut off, and water supply from the tip of the pipeline can be automatically stopped with an inexpensive configuration.

The block diagram which shows typically the water supply apparatus of 1st Embodiment Longitudinal sectional view showing the vicinity of the water tank of FIG. (A) is a longitudinal sectional view showing the air intake valve of FIG. 2, (b) is a sectional view taken along line IIIb-IIIb of (a). 3 is a longitudinal sectional view showing a state where the air hole of FIG. The longitudinal cross-sectional view which shows the vicinity of the water tank of the water supply apparatus of 2nd Embodiment (A) is a longitudinal sectional view showing the air intake valve of FIG. 5, (b) is a longitudinal sectional view showing a state in which the air hole of (a) is opened. The longitudinal cross-sectional view which shows the modification of the air drawing valve of FIG. 6, (b) is a longitudinal cross-sectional view which shows the state which open | released the air hole of (a) The longitudinal cross-sectional view which shows the vicinity of the water tank of the water supply apparatus of 3rd Embodiment (A) is a longitudinal sectional view showing the air intake valve of FIG. 8, (b) is a longitudinal sectional view showing a state in which the air hole of (a) is opened.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment. This water supply device is for sprinkling water on a plant planted on a veranda planter or the like, and as shown in FIG. It is sucked up by the hose 3 and sprinkled from the hose 3. A plurality of branch hoses 3a are connected to the hose 3 by branch pipe joints 4, and a plurality of water sprinkling nozzles 5a to be inserted into the soil of the planter P are attached to the tips of the branch hoses 3a. A hand-held water spray nozzle 5b can also be attached to the tip of one branch hose 3a. The tip of each insertion sprinkling nozzle 5 a opens at a position lower than the water level of the water tank 1.

  As shown in FIG. 2, the pump 2 includes a timer 2a, and the operation time and operation time can be arbitrarily set. Therefore, by setting the timer 2a, the pump 2 can be operated at a desired time for a desired time, and water can be automatically sprayed even during absence. Further, a locking tool 6 for locking the hose 3 is attached to the upper end edge of the water tank 1, and an air intake valve 10 in which a valve box 11 to be described later is placed vertically is mounted on the locking portion of the hose 3. The hose 3 is attached in the middle. The upstream hose 3 hung in the water tank 1 is connected to the bottom of the valve box 11 and the downstream hose 3 hung out of the water tank 1 is connected to the side of the valve box 11. ing. Note that the locking tool 6 may be omitted, and the hose 3 on the upstream side and the downstream side of the air intake valve 10 may be hung in and out of the water tank 1.

  As shown in FIGS. 3 (a) and 3 (b), the air intake valve 10 is provided with a water supply port 11a to which an upstream hose 3 is connected at a bottom part facing downward, and a downstream hose 3 at a side part. A vertically installed cylindrical valve box 11 provided with a drainage port 11b to be connected, a valve lid 12 that covers an upward bottom of the valve box 11 and has an air hole 12a in the center, and a vertical direction in the air hole 12a. A valve shaft 13 that is slidably inserted into the valve shaft 13, and an O-ring 14 that is externally fitted to the valve shaft 13 and that moves up and down together with the valve shaft 13 and is pressed against the valve seat 12 b around the air hole 12 a. And basically consists of. The valve box 11, the valve lid 12, and the valve shaft 13 are all formed of a synthetic resin such as vinyl chloride resin.

  The water supply port 11a at the bottom of the valve box 11 is attached to open downward, and the drainage port 11b at the side is attached to open in the horizontal direction. Further, a stainless steel mesh filter 15 for preventing entry of foreign matter into the valve box 11 is attached to the water supply port 11a at the bottom. The mesh filter 15 has a shape in which an upward convex portion 15a is formed at the center.

  The valve shaft 13 is inserted into the air hole 12 a with a gap that allows sliding movement, and a shielding plate 16 that covers the transverse section of the valve box 11 at the lower end inserted into the valve box 11. Are integrally formed. A gap that allows sliding movement is also formed between the shielding plate 16 and the inner peripheral surface of the valve box 11. These gaps are slight gaps that cannot be distinguished on the drawing. Further, the valve shaft 13 is provided with a groove 13a for air drawing extending in the axial direction, and a flange portion 13b for covering the air hole 12a when lowered, as will be described later. On the upper side, a weight 17 for promoting the lowering of the valve shaft 13 due to gravity is mounted.

  The shielding plate 16 is provided with a through hole 16a penetrating vertically, and chamfered 16b is provided on the upper and lower surfaces of the outer peripheral portion in order to smoothly move up and down. The diameter of the through hole 16a is 1.5 to 2.5 mm, and promotes the lowering of the valve shaft 13 integrally formed with the shielding plate 16 when the pump 2 described later is stopped.

  The O-ring 14 is fitted and fitted into an annular groove 13d so as to be in contact with a large-diameter portion 13c formed on the upper side of the shielding plate 16 of the valve shaft 13. The valve seat 12b is a tapered surface with a narrowed hole diameter formed at the hole edge of the air hole 12a, and the taper angle is set in the range of 10 to 20 °. This is because if the taper angle is less than 10 °, the O-ring 14 may be too hard to come off and be difficult to separate, and if the taper angle exceeds 20 °, the sealing performance may be deteriorated.

  When the pump 2 is operated, the water sucked up from the water tank 1 to the hose 3 flows into the valve box 11 from the water supply port 11a and is loaded below the shielding plate 16 as shown in FIG. The O-ring 14 is pushed up together with the valve shaft 13 by the water pressure from the pump 2, and the air hole 12a is closed by the O-ring 14 pressed against the valve seat 12b. Accordingly, the water flowing into the valve box 11 is discharged as it is from the drain port 11b to the hose 3 on the downstream side, and sprinkled from each of the watering nozzles 5a or from the watering nozzles 5a and 5b. The shielding plate 16 suppresses water leakage from the water flowing into the valve box 11 through the air holes 12a before the O-ring 14 is pressed against the valve seat 12b.

  FIG. 4 shows a state where the pump 2 is stopped. When the water pressure in the valve box 11 disappears due to the stop of the pump 2, the water in the valve box 11 mainly flows out from the water supply port 11 a that opens downward and is returned to the water tank 1. As the water flows out, the shielding plate 16 descends, the O-ring 14 descending together with the valve shaft 13 is detached from the valve seat 12b, and external air is drawn into the valve box 11 from the air hole 12a. Therefore, the watertight state in the valve box 11 is eliminated, the siphon action is naturally cut off, and watering is automatically stopped. At this time, the shielding plate 16 descends to near the bottom of the valve box 11 and is locked to the convex portion 15a of the mesh filter 15 attached to the water supply port 11a. For this reason, the water supply port 11 a from which water flows out is not blocked by the shielding plate 16. Further, since the air hole 12a is covered with the flange 13a at the upper end portion of the valve shaft 13 protruding from the valve lid 12, there is no possibility that foreign matter enters from the air hole 12a. Note that the flange 13b may be locked to the valve lid 12 so that the lowering position of the shielding plate 16 is regulated near the bottom of the valve box 11.

  When the pump 2 is actuated again, as shown in FIG. 3A, the O-ring 14 that rises together with the shielding plate 16 by water pressure is pressed against the valve seat 12b, and watering is started again. Since the air intake valve 10 of the first embodiment can be used in the up / down stroke region of the shielding plate 16 to the bottom of the valve box 11, the height dimension of the valve box 11 is higher than that of the second embodiment described later. Can be designed compactly.

  5 and 6 show a second embodiment. This water supply device is also for watering similar to that of the first embodiment. As shown in FIG. 5, as shown in FIG. 5, the upstream hose 3 is locked by a locking tool 6 and hung in the water tank 1. Is connected to the side of the vertical valve box 11 of the air intake valve 10, and the downstream hose 3 hung out of the water tank 1 is connected to the bottom of the valve box 11 facing downward.

  As shown in FIG. 6 (a), this air intake valve 10 is provided with a water supply port 11a to which an upstream hose 3 is connected at a side portion of a vertically installed cylindrical valve box 11, and a downstream side at a downstream side. A shielding plate is provided on the inner peripheral surface of the valve box 11 as a restricting means for regulating the lowering position of the shielding plate 16 above the side water supply port 11a and the point where the drainage port 11b to which the hose 3 is connected is provided. The height of the valve box 11 is different from that of the first embodiment in that a step portion 11c is formed to lock the outer periphery of 16 directly above the side water supply port 11a. It is higher than that of the form. The other parts are the same as those of the first embodiment. The valve lid 12 is provided with an air hole 12a. The valve shaft 13 is slidably inserted into the air hole 12a. When the pump 2 is operated, the O-ring 14 is pressed against the valve seat 12b around the air hole 12a by the water pressure of water flowing from the water supply port 11a. The shielding plate 16 is provided with a through hole 16a, and the valve shaft 13 is provided with a concave groove 13a and a flange portion 13b, and a weight 17 is attached thereto.

  As shown in FIG. 6B, in this embodiment, when the water pressure in the valve box 11 disappears due to the stop of the pump 2, the water in the valve box 11 flows out of the water supply port 11a and the drain port 11b by gravity, The shielding plate 16 descends to a position directly above the water supply port 11a, and external air is drawn into the valve box 11 from the air hole 12a from which the O-ring 14 is detached, the siphon action is cut off, and water spraying is automatically stopped. .

  7A and 7B show a modification of the air intake valve 10 of the second embodiment. In this modification, the flange 13b provided at the upper end of the valve shaft 13 is locked to the upper surface of the valve lid 12 as a means for regulating the lowered position of the shielding plate 16 above the water supply port 11a. Is different. Other portions are the same as those of the second embodiment, and a weight 17 is mounted on the upper side of the flange portion 13b. As a means for regulating the descending position of the shielding plate 16, a means for attaching a retaining ring such as an E ring or C ring to the upper part of the valve shaft 13 and locking the retaining ring to the upper surface of the valve lid 12 is adopted. You can also

  In the first and second embodiments described above, the weight 17 is attached to the valve shaft 13 and the through hole 16a having a diameter of 1.5 to 2.5 mm is provided in the shielding plate 16. Even if the hole 16a is omitted or the diameter of the through hole 16a is out of the range of 1.5 to 2.5 mm, the valve shaft 13 is lowered when the pump 2 is stopped, and the air hole 12a is moved into the valve box 11. Air can be drawn in.

  8 and 9 show a third embodiment. This water supply device is also for watering. As shown in FIG. 8, the upstream hose 3 which is locked by the locking tool 6 and is suspended in the water tank 1 is a horizontal valve of the air intake valve 10. A downstream hose 3 connected to one bottom of the box 11 and hung out of the water tank 1 is connected downward to the side of the valve box 11.

  As shown in FIG. 9 (a), the air intake valve 10 has a water supply port that is open in a horizontal direction in which a valve box 11 has a horizontal cylindrical shape and an upstream hose 3 is connected to one bottom portion. 11a is attached, and a drain port 11b that opens downward is connected to the downstream side of the hose 3 on the downstream side, and an air hole 12a is provided in the center of the valve lid 12 that covers the other bottom. . A stainless steel mesh filter 15 having a convex portion 15a protruding inward of the valve box 11 is attached to the water supply port 11a.

  A valve shaft 13 is fitted in the air hole 12a so as to be slidable in the left-right direction, and an O-ring 14 pressed against the valve seat 12b around the air hole 12a is fitted on the valve shaft 13. The valve shaft 13 is inserted into the air hole 12a with a gap that allows sliding movement, and a shielding plate 16 that covers the transverse section of the valve box 11 is provided at the tip inserted into the valve box 11. A flange 13b that is integrally formed and that covers the air hole 12a when the base end protrudes from the valve lid 12 moves to one bottom side as will be described later. Further, the valve shaft 13 is provided with a concave groove 13a for air drawing extending in the axial direction, and the shielding plate 16 is provided with a through hole 16a having a diameter of 1.5 to 2.5 mm. Further, a chamfer 16b is provided.

  The O-ring 14 is fitted and fitted in the annular groove 13d so as to be in contact with the large-diameter portion 13c formed beside the shielding plate 16 of the valve shaft 13. The valve seat 12b is a tapered surface with a narrowed hole diameter formed at the hole edge of the air hole 12a, and the taper angle is set in the range of 10 to 20 °.

  When the pump 2 is operated, water sucked from the water tank 1 to the hose 3 flows into the valve box 11 from the water supply port 11a and is loaded on the left side of the shielding plate 16 as shown in FIG. Due to the water pressure from the pump 2, the O-ring 14 moves to the right together with the valve shaft 13, and the air hole 12a is closed by the O-ring 14 pressed against the valve seat 12b. Therefore, the water flowing into the valve box 11 is discharged as it is from the drain port 11b to the hose 3 on the downstream side, and water spraying is started. The shielding plate 16 suppresses water leakage from the water flowing into the valve box 11 through the air holes 12a before the O-ring 14 is pressed against the valve seat 12b.

    FIG. 9B shows a state where the pump 2 is stopped. When the water pressure in the valve box 11 disappears due to the pump 2 being stopped, the water in the valve box 11 flows out of the water supply port 11a and the drain port 11b by gravity, and the shielding plate 16 moves to the left along with the outflow of this water. Then, the O-ring 14 is detached from the valve seat 12b, and external air is drawn into the valve box 11 from the air hole 12a. Therefore, the watertight state in the valve box 11 is eliminated, the siphon action is naturally cut off, and watering is automatically stopped. At this time, the shielding plate 16 moves to the vicinity of the water supply port 11a of the valve box 11 and is locked to the convex portion 15a of the mesh filter 15 attached to the water supply port 11a. For this reason, the water supply port 11 a from which water flows out is not blocked by the shielding plate 16. Further, since the air hole 12a is covered with the flange portion 13b of the valve shaft 13, there is no possibility that foreign matter enters from the air hole 12a.

  In each embodiment mentioned above, although the groove 13a for air drawing was provided in the valve shaft 13, these concave grooves 13a can also be abbreviate | omitted. In this case, air is drawn only from the gap between the valve shaft 13 and the air hole 12a.

  In each of the above-described embodiments, the valve box of the air intake valve is cylindrical, and the water supply port and the drain port are separately provided at the bottom and the side. However, the valve box can also be a polygonal cylinder. Both the water supply port and the water discharge port can be provided at the bottom or the side. In addition, both the water supply port and the drain port are opened horizontally or downward, but one or both of them are opened upward than the horizontal direction. Air can be drawn from.

  In each of the above-described embodiments, the pump is a throw-in type with a timer, but the pump may be an external type that is placed outside the aquarium, and may be manually turned on and off. .

  In each of the above-described embodiments, the water supply device is for watering plants, but the water supply device according to the present invention is not limited to that for watering, for example, a campsite without a water tap In addition, it is possible to supply water for various purposes in a place where water has been shut down for a long time due to a disaster or the like.

DESCRIPTION OF SYMBOLS 1 Water tank 2 Pump 2a Timer 3 Hose 3a Branch hose 4 Branch pipe joint 5a, 5b Watering nozzle 6 Locking tool 10 Air drawing valve 11 Valve box 11a Water supply port 11b Drain port 11c Step part 12 Valve cover 12a Air hole 12b Valve seat 13 Valve shaft 13a Concave groove 13b Groove part 13c Large diameter part 13d Annular groove 14 O-ring 15 Mesh filter 15a Convex part 16 Shield plate 16a Through hole 16b Chamfer 17 Weight

Claims (6)

Used in a water supply device that sucks up water stored in a water tank into a pipe line and supplies water from the tip of the pipe line, provided in the middle of the pipe line, when the pump stops, to the pipe line In the air intake valve for water supply equipment that draws air ,
A water supply port connected to the upstream side of the pipe line is provided on one of the side part and one bottom part of the cylindrical valve box, and a drain port connected to the downstream side of the pipe line is provided on the other side. The valve body housed in the valve box is moved to the other bottom side with the pressure of water supplied from the water supply port, and pressed against the valve seat around the air hole, When the pump stops and the water pressure in the valve box disappears, the valve body moves to the one bottom side so as to draw air from the air hole,
The valve shaft is inserted into the air hole of the valve box and slides in the cylinder axis direction of the valve box, and the valve body is provided on the valve shaft.
Provided at the end of the valve shaft inserted into the valve box is a shielding plate that covers the cross section of the cylindrical valve box, and moves the shielding plate in the cylinder axis direction together with the valve shaft. West,
An air intake valve for a water supply apparatus, wherein a filter having a convex portion for preventing the shielding plate from closing the water supply port or the drainage port is attached to the water supply port or the drainage port provided in the one bottom portion . 2. The air intake valve for a water supply apparatus according to claim 1 , wherein the other bottom portion is provided at an upper portion of the valve box, and a weight is mounted on the valve shaft to promote the lowering of the valve shaft due to gravity . The air intake valve for water supply apparatus according to claim 1 or 2 , wherein the valve body is an O-ring externally fitted to the valve shaft. The air intake valve for water supply apparatus according to any one of claims 1 to 3, wherein the shielding plate is provided with a through-hole penetrating the front and back. The water supply device air according to any one of claims 1 to 4, further comprising means for restricting a position of the shielding plate to the one bottom side to a position on the other bottom side of the water supply port. Retraction valve. Water supply apparatus using the air lead-valve water supply device according to any one of claims 1 to 5.

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