JP2006043520A - Sprinkling nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprinkling nozzle which has excellent practicability, being capable of preventing wasteful sprinkling, a possible cause of high costs, and reducing the risk of freezing of the road surface by leaked water by preventing leakage of water. <P>SOLUTION: The nozzle has the first valve portion 8 communicating with a water-supplying pipe 6 and opened or closed with the first opening and closing valve and a sprinkling hole 9 communicating with the first valve portion 8 arranged in the upper part of the nozzle and embedded so that the sprinkling hole 9 is exposed to the road surface. A control space 1 is formed between the first valve section 8 and the water-supplying pipe 6: the downstream side of the control space 1 communicates with the first valve portion 8, and the upstream side communicates with the water-supplying pipe 6 through the second valve portion 2 opened or closed with the second opening and closing valve. The second valve is structured so as to open the second valve portion 2 when a specified water pressure is applied to its upstream side. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water spray nozzle for removing snow from a road surface.

  Conventionally, a water spray nozzle for snow removal on a road surface has a valve chamber having a valve port with an opening / closing valve, and has a water spray hole in the upper part, and a branch pipe standing on a water pipe buried in the lower part of the road surface The groundwater is pumped to the valve chamber via the valve, and the flow rate is controlled by the open / close valve to spray water from the water spray hole.

  By the way, for example, in the case where a plurality of watering nozzles are provided in the same water supply pipe, when the road surface is inclined, the watering pressure increases as the watering nozzle provided at a lower position increases the amount of watering. The water spray nozzles provided in the lower positions are made smaller in the valve opening amounts of the valve ports, and the water spray amounts of the plurality of water spray nozzles are made uniform.

  However, dust such as sand may get caught in the valve opening that adjusts the amount of water spray, and in particular, the double pipe structure is used to rotate the inner pipe to adjust the valve opening amount. In this case, when the opening amount of the valve port is reduced as described above, dust such as sand is very easily caught, and when the valve port is clogged with dust in this way, the valve port is closed and watering stops. For example, there is a problem that water is not sprayed as adjusted, resulting in uneven watering.

  In addition, once the valve opening amount is set, it is not adjusted again frequently. For example, when the road surface is inclined, when the water supply in the water supply pipe is stopped, the remaining amount in the water supply pipe is not adjusted. There is a problem that the accumulated water leaks from the watering nozzle (particularly, it leaks from the watering nozzle provided at a low position).

  This water leak wets the road surface and causes the road surface to freeze, which is very dangerous and wasteful watering causes high costs.

  In particular, when a chemical leak such as sodium chloride is mixed with groundwater and sprayed with a chemical solution, the chemical solution is wasted and is very expensive and extremely inefficient.

  Therefore, when water supply in the water supply pipe is stopped, the valve ports of the watering nozzles must be closed, which is extremely troublesome.

  This invention is completed in view of the said problem, Comprising: When the watering nozzle which concerns on this invention is provided in the water pipe buried in the inclined road surface as mentioned above, the water supply in a water pipe stops Even if this is done, there will be no water leakage, which eliminates unnecessary water sprinkling and is extremely economical. Furthermore, road surface freezing can be reliably prevented and safety is improved, and two on-off valves are provided. It is possible to adjust the sprinkling amount step by step with these two on-off valves, so there is no need to extremely reduce the opening amount of the valve opening, and therefore it is due to clogging of dust The present invention provides an epoch-making watering nozzle that is extremely practical, such as preventing watering failure.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A first valve portion 8 that communicates with the water supply pipe 6 and is opened and closed by a first on-off valve is provided, and a watering hole 9 that communicates with the first valve portion 8 is provided at an upper portion so that the watering hole 9 is exposed to the road surface. The control space 1 is provided between the first valve portion 8 and the water supply pipe 6, and the control space 1 communicates with the first valve portion 8 on the downstream side, and on the upstream side. The second on-off valve is communicated with the water supply pipe 6 via the second valve portion 2 opened and closed by the second on-off valve, and the second on-off valve has a second valve portion when a predetermined water pressure is applied from the upstream side of the second on-off valve. It is related with the watering nozzle characterized by being comprised so that 2 may be opened.

  The watering nozzle according to claim 1, wherein the second on-off valve is configured to open when a predetermined water supply pressure is applied from the water supply pipe 6. It is related to.

  Further, in the watering nozzle according to any one of claims 1 and 2, the second on-off valve is provided with an urging body 3 for urging the second on-off valve to a closed state. It concerns the watering nozzle which is characterized.

  Further, in the watering nozzle according to claim 3, when the water supply in the water supply pipe 6 is stopped, the urging force of the urging body 3 closes the second valve portion, and the water supply pipe 6 The water spray nozzle is characterized in that it is set so that the second valve portion is opened when water is being fed inside.

  Since the present invention is configured as described above, not only can watering be performed well, but even if water supply in the water supply pipe is stopped, the second valve portion is closed by the second on-off valve. Residual water can be prevented from leaking, wasteful sprinkling, which has been a cause of high costs, can be prevented, and water leakage that has also caused road surface freezing can be reliably prevented. It is a revolutionary and highly commercial watering nozzle with excellent practicality that can reliably eliminate unevenness.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The control space 1 provided between the first valve portion 8 opened and closed by the first on-off valve and the water supply pipe 6 is opened and closed by the second on-off valve on the upstream side of the control space 1. When water is supplied from the water supply pipe 6 via the second valve part 2, the second valve part 2 is opened by the water supply pressure from the water supply pipe 6, and water is sprayed from the watering holes 9.

  When the water supply from the water supply pipe 6 is stopped, the water supply pressure from the water supply pipe 6 decreases, the water pressure applied to the second on-off valve from the upstream side becomes low, and the second valve portion 2 is closed, Watering from the watering hole 9 stops.

  Therefore, for example, if the water nozzle 6 according to the present invention is provided in the water pipe 6 embedded in the inclined road surface, and the opening / closing operation of the second on-off valve is set to a predetermined value, that is, water supply in the water pipe 6 is stopped. At this time, if the valve is set so as not to open due to the water pressure due to the residual water in the water supply pipe 6, leakage is prevented even in the water nozzle in the low position, and the water spray is surely stopped.

  Further, if the opening / closing operation of the second opening / closing valve is set so as to be opened only when a predetermined water pressure is applied in consideration of the inclination of the road surface, the first valve portion 8 does not need to be throttled so much by the first opening / closing valve. However, uniform water spraying is possible, so that clogging of dust in the first valve portion 8 is reliably prevented.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, a first valve portion 8 that communicates with the water supply pipe 6 and opens and closes by a first on-off valve is provided, and a watering hole 9 that communicates with the first valve portion 8 is provided at the upper portion. A watering nozzle that is buried so as to be exposed on the road surface, and a control space 1 is provided between the first valve portion 8 and the water supply pipe 6, and the downstream side of the control space 1 is the first valve portion 8. Is communicated with the water supply pipe 6 through the second valve portion 2 that is opened and closed by the second opening / closing valve, and the second opening / closing valve is subjected to a predetermined water pressure from the upstream side of the second opening / closing valve. The second valve portion 2 is configured to open.

  Further, the watering nozzle according to the present embodiment is embedded with the upper surface provided with the watering holes 9 being substantially flush with the paved road surface, and the branch pipe formed upright on the water supply pipe 6 embedded in the lower part. 5 is used as a water spray nozzle for snow removal on the road surface, which sprays ground water or the like supplied from the water pipe 6 onto the pavement road surface and removes snow on the pavement road surface.

  Specifically, as shown in FIG. 1, a rectifying chamber 12 is provided at the top of the main body 10, and a water spray hole 9 communicating with the rectifying chamber 12 is formed at the top of the main body 10. A receiving hole 11 connected to the branch pipe 5 connected in a standing state to the water supply pipe 6 is provided at a lower part of the water supply pipe 6, and the control space 1 communicating with the receiving hole 11 is the second in the center of the main body 10. The control space 1 communicates with the rectifying chamber 12 via a first valve portion 8 with a first on-off valve provided at the upper center of the main body portion 10. It is the composition which is.

  The water spray holes 9 are formed at four positions at intervals of about 90 ° with the center position of the top of the main body 10 in the plan view.

  The water supply from the water supply pipe 6 is sprinkled on the road surface from the branch pipe 5, the second valve part 2, the control space 1, the first valve part 8, the rectifying chamber 12, and the water spray hole 9.

  Further, as shown in FIG. 1, the first valve unit 8 is provided in the valve cylinder 15 by inserting a valve cylinder 15 into a water passage 13 provided in the center of the main body 10 and communicating with the control space 1. The amount of water is adjusted by matching the movable hole 14 and the fixed hole 18 provided in the main body 10.

  As shown in FIG. 3, the movable hole 14 and the fixed hole 18 are communicated with each other to open the valve, and as shown in FIG. 4, the movable hole 14 is rotated to rotate the movable hole 14 and the fixed hole 18. If they do not overlap, the valve is closed.

  Reference numeral 17 denotes a tool engaging portion, and a water amount is adjusted by rotating a valve cylinder 15 by engaging a screwdriver or the like with the tool engaging portion 17.

  The valve structure of the first valve portion 8 is not limited to this. For example, as shown in FIG. 5, a valve rod 16 is vertically suspended at the center of the valve port, and the valve rod 16 By raising and lowering, the facing interval between the opening edge 19 and the valve slope 16 'of the valve rod 16 may be widened and narrowed, and a valve structure configured to adjust water flow, water stoppage and water flow rate may be adopted. In addition, any valve structure may be used as long as the characteristics of the present embodiment can be exhibited.

  A control space 1 is provided between the first valve port 8 and the water supply pipe 6.

  In the control space 1, the downstream side communicates with the water passage 13, and the second valve portion 2 that communicates with the branch pipe 5 of the water supply pipe 6 is provided on the upstream side.

  This 2nd valve part 2 opens and closes the opening part 4 (valve port) of the lower part of the control space 1 by the raising / lowering body 7 (2nd on-off valve).

  In addition, as shown in FIG. 1, the lifting body 7 is provided with a biasing body 3 that biases the lifting body 7 toward the opening 4. The opening 4 is configured to be biased in the closing direction.

  The urging force of the urging body 3 opens the opening 4 when the water supply in the water supply pipe 6 is performed, and opens the opening 4 when the water supply in the water supply pipe 6 is stopped. Is set so that the lifting body 7 is closed.

  Further, the biasing body 3 employs an anti-compression spring.

  Moreover, the raising / lowering body 7 is the structure formed with the synthetic resin member which has appropriate flexibility.

  In addition, the raising / lowering body 7 is not restricted to the above-mentioned structure, For example, what can close the opening part 4, such as a spherical body with a diameter larger than the opening part 4, may be sufficient.

  Since the present embodiment is configured as described above, the following operational effects are exhibited.

  A screwdriver is engaged with the tool engaging portion 17 on the upper portion of the valve cylinder 15 of the first valve port 8 to rotate the valve cylinder 15, and the movable hole 14 and the fixed hole 18 of the valve cylinder 15 are overlapped, The valve is opened, and water is supplied from the water supply pipe 6 through the opening 4 to the upstream side of the control space 1. When the water supply pressure from the water supply pipe 6 is a predetermined water pressure, the second on-off valve (elevating body 7) resists the urging force of the urging body 3 (anti-compression spring) and moves upward in FIG. The groundwater moved to (opening direction of the opening 4) and opened in the valve state as shown in FIG. 2 and fed from the water pipe 6 flows into the control space 1, and downstream of the control space 1. Water is introduced into the rectifying chamber 12 through the first valve portion 8 and is sprinkled on the road surface from the sprinkling holes 12 formed in the top of the rectifying chamber 12 at the top of the rectifying chamber 12.

  Further, when the water supply from the water supply pipe 6 is stopped, the water supply pressure from the water supply pipe 6 is reduced, the water pressure applied to the second on-off valve from the upstream side is reduced, and the second on-off valve is the urging body 3. The opening 4 is closed by the urging, and water spraying is reliably stopped.

  Specifically, a general water spraying nozzle for road surface snow removal is provided with a plurality of water spray nozzles connected to the same water pipe 6, and therefore provided at a low position when the road surface is inclined. Since the watering pressure increases and the watering amount increases, the watering nozzle provided at the lower position and the valve opening amount are made smaller, and the watering amounts of these watering nozzles are made uniform.

  However, as described above, in the case where the road surface is inclined, in the watering nozzle having the configuration in which only the conventional first valve portion is provided, even if the water supply from the water supply pipe 6 is stopped, the first valve portion Since the valve remains open (the first valve portion is not adjusted frequently once set), the residual water in the water supply pipe 6 leaks from the watering nozzle provided particularly at a low position for a predetermined time. After the lapse of time, almost all residual water in the water pipe 6 flows out to the road surface.

  That is, in the conventional watering nozzle, even if the water supply of the water supply pipe 6 is stopped, most of the residual water in the water supply pipe 6 leaks and is sprinkled unnecessarily, which causes a high cost. If the chemical solution is mixed with sodium chloride or other chemicals, the cost will be very high, the efficiency will be extremely low, and the leaked groundwater or chemical will cause the road surface to freeze. There is also a problem in terms of safety, and when water spraying is started, after the groundwater that has leaked is replenished in the water pipe 6, finally from all the water nozzles communicated with the water pipe 6 Since water will be sprayed, the speed of snow-melting work will be reduced accordingly.

  In this respect, in the watering nozzle according to the present embodiment, as described above, even when the water supply in the water supply pipe 6 is stopped when the road surface is inclined, the water supply pipe is caused by the urging force of the urging body 3. When the water supply from 6 is stopped, the opening 4 is configured to be closed by the second on-off valve, so that the water can be reliably stopped by closing the opening 4 by the second on-off valve, Watering will stop reliably.

  Therefore, in this embodiment, not only can the watering be performed satisfactorily, but also when the water supply pipe 6 is stopped, the second valve portion is automatically closed, so that the watering nozzle according to this embodiment is used. However, even if it is installed on a water pipe buried in an inclined road surface, it is possible to reliably stop the water spray and prevent leakage of residual water in the water pipe. It is possible to prevent the water leakage that has caused the road surface freezing, and it is excellent in safety, and the water pipe 6 is always filled with underground water. At the start of watering, watering starts immediately from all the watering nozzles communicated with the water pipe 6, so that it is excellent in workability and has an innovative and high commercial value watering nozzle. Become.

  In addition, since the second on-off valve is made of a synthetic resin member having appropriate flexibility, when the opening 4 is closed, the flexible second on-off valve opens the opening 4. The opening 4 can be reliably closed by tightly adhering to the edge, and watering can be stopped more reliably when watering is stopped.

  In addition, as described above, when the road surface is inclined, the opening amount of the first valve portion is made smaller as the watering nozzle provided at the lower position, and the watering amounts of these watering nozzles are made uniform. However, in the conventional watering nozzle, since the watering amount is adjusted only by the valve opening amount of the first valve portion, the watering nozzle in the lower position will throttle the valve opening amount extremely small. This could cause clogging of sand and other dust in the valve, making it easy to clog.Therefore, with the conventional watering nozzle, the first valve is clogged with dust, reducing the amount of water spraying, and stopping watering. Sprinkling failure often occurs when water is not sprayed at the street.

  In this regard, in the present embodiment, the second valve portion is provided, and an anti-contraction spring is provided as the urging body 3 for urging the second valve portion in the closing direction, and the urging force is set as described above. Therefore, it is possible to adjust the water spray from the water sprinkling hole 9 without reducing the opening amount of the first valve portion so much, so that it is difficult to clog the dust and the water sprinkling failure can be prevented and the water spraying work can be performed efficiently. In this respect, it is extremely practical.

  Further, for example, a plurality of types of anti-contraction springs having different spring coefficients are adopted, and the urging body 3 having a large spring coefficient is provided for the water nozzle provided at the low position, and the spring coefficient is provided for the water nozzle provided at the high position. By providing the small urging bodies 3 respectively, the water amount is simply adjusted by the second on-off valve, and the water amount adjustment is performed by the first on-off valve. Since it can be performed step by step with the second on-off valve, it is inevitably necessary to reduce the opening amount of the first on-off valve extremely small.

  In addition, it is good also as a structure which adjusts the spring coefficient of the anti-compression spring as the said urging body 3 suitably, and performs the said water quantity adjustment only by a 2nd on-off valve. In this case, since it is not necessary to adjust the water amount of the watering nozzles according to the plurality of embodiments according to the opening amount of the first on-off valve, it is possible to further improve the workability.

It is explanatory drawing sectional drawing of the watering nozzle which concerns on a present Example. It is a front sectional view of the 2nd valve part of the watering nozzle which concerns on a present Example. It is a front sectional view of the 1st valve part of the watering nozzle concerning this example. It is a front sectional view of the 1st valve part of the watering nozzle concerning this example. It is front sectional drawing of another example of the 1st valve part of the watering nozzle which concerns on a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control space 2 2nd valve part 3 Energizing body 6 Water supply pipe 8 1st valve part 9 Sprinkling hole

Claims (4)

  A first valve portion that communicates with the water supply pipe and is opened and closed by a first on-off valve is provided, and a water spray hole that communicates with the first valve portion is provided at an upper portion, and the water spray is buried so that the water spray hole is exposed on the road surface. A nozzle, wherein a control space is provided between the first valve portion and the water supply pipe, and the control space is a second valve whose downstream side communicates with the first valve portion and whose upstream side is opened and closed by a second opening / closing valve. The second open / close valve is configured to open the second valve portion when a predetermined water pressure is applied from the upstream side of the second open / close valve. Sprinkling nozzle that features.   The watering nozzle according to claim 1, wherein the second on-off valve is configured to open when a predetermined water supply pressure is applied from the water supply pipe.   The watering nozzle according to any one of claims 1 and 2, wherein the second on-off valve is provided with a biasing body that biases the second on-off valve to a closed state. Watering nozzle. 4. The watering nozzle according to claim 3, wherein the urging force of the urging body is such that when the water supply in the water supply pipe is stopped, the second valve portion is closed, and the water supply in the water supply pipe is performed. The watering nozzle is set so that the second valve portion is opened when it is closed.

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