JP4636985B2 - Pollution prevention device - Google Patents

Description

  The present invention relates to a pollution control device that is installed in a dam, a lake, a river, a harbor, etc. to prevent the inflow of muddy water or to prevent the expansion of a contaminated water area. And an anti-contamination film that hangs down in water, and a part of the float is related to an anti-contamination device that is of a floating type that can float and sink by taking in and out of air.

  Various types of pollution control devices have been put into practical use so far, and are mainly used for preventing turbidity of stored water in dams and lakes, and for preventing diffusion of polluted water caused by river construction and port construction. ing.

  In general, the pollution control device mainly comprises an elongated tube-like float floating on the water surface and a pollution prevention film that hangs on the float and separates the contaminated water area from the non-contaminated water area. Floats have a buoyancy body inside, a fixed type that contains foamed polystyrene, etc., and is always floating on the surface of the water, and a floating type that floats and sinks by filling the inside with air and taking this filled air in and out .

  Floating floats can lower the buoyancy by evacuating the internal air and submerge it in the water, so if you use a float float that is part of a float that consists of fixed floats, It is convenient because the upper layer water can be easily circulated and the work vessel can be passed through (see, for example, Patent Document 1).

  On the other hand, when the floating float is lowered, even the end of the connected fixed float may be drawn into the water and submerged, and the stored buoyant body such as polystyrene foam is crushed by water pressure. Accordingly, there is a problem that the buoyancy of the fixed float is weakened due to the reduction, and that a failure of a device such as a flow valve attached to a connecting portion between the fixed float and the float / sink float is likely to occur.

Therefore, the fixed float may be increased in diameter to increase the volume of the internal buoyant body, thereby increasing the buoyancy of the fixed float itself to prevent submergence.
Japanese Patent Laying-Open No. 2005-120582 (pages 3, 4 and 3)

  However, since it becomes difficult to handle when the diameter of the fixed float is increased, it takes effort to expand and collect the pollution control device. Also, for storage after collection, a large storage space is required because the collected fixed float is bulky. Become.

  Therefore, an object of the present invention is to provide a convenient pollution control device that can prevent submersion without increasing the buoyancy of the fixed float.

In order to solve the above problem, the pollution prevention device according to claim 1 includes a float floating on a water surface, and a pollution prevention film attached with a weight to prevent rising and suspended from the float, and at least a part of the float Is a floatation type float that can float and sink by taking in and out of air, and a fixed float that is always floated on the water surface is connected to both ends of the float and sink float, respectively. A forced sinking weight is disposed at one end of the float / float type float at a position close to the middle in the longitudinal direction by a predetermined distance from the end of the end, and exhaust for exhausting internal air to the other end. mouth been arranged, the allowed to settle in a state sunken said force and the subsidence for weight provided moiety most by the discharge of air from the exhaust port, wherein the discharge stop of the air from the exhaust port floating and sinking Is characterized by being configured to be in a state of leaving air in said one end and the other end of the floating.

  According to the pollution prevention device of claim 1, when the air is discharged from the exhaust port, the buoyancy float decreases in buoyancy and starts to sink in water due to its own weight or the weight of the pollution prevention film. It sinks with the part where the weight is provided sinking most. If it does so, the air between the said weight for forced subsidence and the said edge part terminal end of the said float-sink type float will remain without being discharged | emitted, and an air pool will arise.

  On the other hand, the float-float type float sinks in a state where the portion where the forced sinking weight is provided sinks most, i.e., in a state where the space from the forced sinking weight to the other end is inclined obliquely, Air escape from the exhaust port provided at the other end is good, and air hardly remains in the middle. Then, if air is left at the other end of the float / sink type float and the discharge port is closed to stop the air discharge, an air pool is also generated at the other end.

  The air pools at both ends of the float / float type float thus provided prevent the both ends from being submerged even if the float / float float sinks. Therefore, the end of the fixed float connected to the float / float type float. The part will not submerge in the water.

  The pollution control device according to claim 2, wherein another forced settlement weight is provided on the pollution prevention film suspended by the floating float, and the separate forced weight is disposed below the forced settlement weight of the floating float. It arrange | positions so that it may be located in.

  According to the pollution preventing apparatus of claim 2, by providing the other forced sinking weight below the forced sinking weight of the floating float, the sinking of the floating float is further promoted and the sinking speed is increased. You can speed up.

The pollution control device according to claim 3 includes a float that floats on the water surface, and a pollution prevention film that is fitted with a weight that prevents dripping and is suspended from the float, and at least a part of the float can float and sink by taking in and out air. It is a pollution prevention device in which fixed floats that are always floating on the water surface are connected to both ends of the float floats, respectively, and are suspended by the float floats. A forced sinking weight is disposed at a position closer to the intermediate portion in the width direction by a predetermined distance from the end of the same side end at the one side end of the pollution prevention film. Write the opposite end of the sink-float type float and were disposed an exhaust port for discharging the inside air in a state sunken part provided with the forced subsidence for weight and most by the discharge of air from the exhaust port Was made, is characterized by being configured to be in a state of leaving air in said one end and other end of the sink-float type float by the discharge stop of the air from the exhaust port.

  According to the pollution prevention apparatus of Claim 3, when air is discharged from the float / float type float to reduce buoyancy, the float / float float is a portion located above the forced sinking weight provided in the pollution prevention film. Therefore, the same action as that of the pollution control device according to claim 1 can be produced. That is, it is possible to prevent the submerged float connected to the float / sink float from being submerged by creating an air pool at both ends of the float / float float so as not to sink in water.

  According to a fourth aspect of the present invention, there is provided an ups and downs pollution prevention device, wherein the exhaust port is provided at a position closer to the middle in the longitudinal direction by a predetermined distance from the end of the end of the arranged float type sink. In this way, an air reservoir can be automatically created between the exhaust port and the end of the float / float type float.

That is, when the exhaust port is opened and air is discharged from the float / float type float, the float / float float is reduced in buoyancy and sinks with its own weight or weight for forced settlement. At this time, since the forced sinking weight of the float-sink type floats from the end to the end of the float, the air between the forcibly sinking weight and the discharge port is discharged because the sink is inclined obliquely with the end facing up. Then, the discharge of air naturally stops, and air remains from the discharge port to the end, and an air pool is formed. Therefore, it is possible to save the trouble of monitoring the sinking state of the float / float type float.

  The pollution control device of the present invention made by the means as described above can prevent submergence without increasing the size of the fixed float, so that a small fixed float can be used, and the expansion and recovery work can be performed. In addition to being easy, it can be stored in a small space since it is not bulky after being collected. Further, since the amount of air to be taken in and out of the float / float type float is small as much as the air reservoir is provided, the time required for air supply / exhaust can be shortened and the float float / sink operation can be performed in a short time.

  Hereinafter, an embodiment of a pollution control device according to the present invention will be described with reference to FIGS. The anti-pollution device 1 shown in FIG. 1 is for preventing turbidity of dam reservoir water. Both ends are fixed to the right bank and the left bank on the upstream side of the dam body, and the stored water is divided into the upstream side and the downstream side. It is stretched in the state.

  The pollution prevention device 1 is composed of a float 2 having a substantially circular cross section in which a buoyant body can be accommodated, and a pollution prevention film 3 suspended along the entire length of the float 2.

  The float 2 has a floating float 4 disposed between the fixed floats 5 and is anchored by connecting the ends of the fixed floats 5 at both ends to a land anchor with a rope (not shown).

  This fixed type float 5 is one in which tarpaulin is sewn in a tube shape and foamed polystyrene F is accommodated therein, and the float-float type float 4 is formed in a tube shape so that air can be taken in and out.

  Further, the float / float type float 4 is constituted by three floats, and the short floats 6 and 6 are respectively connected to both ends of one long float 7 to form one float. As shown in FIG. 2, the short floats 6 and 6 and the long floats 7 are connected by connecting the connection portions 6 a and 7 a provided at the respective ends with a connector c. FIG. 2 shows a partially enlarged view of part A in FIG.

  The vent pipes 6b and 7b provided in the respective connecting portions 6a and 7a are connected by the pipe joint 8 so that the inside of the short floats 6 and 6 and the inside of the long floats 7 are communicated.

  On the other hand, the connection between the floating float 4 and the fixed float 5 shown in FIG. 1B, that is, the connection between the short float 6 and the fixed float 5 is the connection of the short float 6 as shown in FIG. This is done by connecting the part 6a and the connecting part 5a of the fixed float 5 with a connector c.

  Similarly, the connection between the opposite float / float type float 4 and the fixed float 5 shown in part C of FIG. 1 is made by connecting the connecting part 6a of the short float 6a and the connecting part 5a of the fixed float 5 to the connector c. The three-way valve 11 for taking in and out the air of the floating float 4 is fixed to the connector c (see FIG. 4).

  As shown in FIG. 5, the three-way valve 11 is connected with an air supply hose 12 extended from a compressor (not shown) installed on land, and an air supply / exhaust pipe for supplying and exhausting the float / float type float 4. One end of 13 is connected.

  The three-way valve 11 is provided with an operation portion 11a for switching the valve, and an air supply hose 14 for supplying operating air is connected to the operation portion 11a. And by operating the operation part 11a and switching the valve, the air in the air supply hose 12 can be supplied into the float / float type float 4 or the air in the float / float type float 4 can be discharged from the exhaust port 11b. .

  The other end of the air supply / exhaust pipe 13 is extended along the short float 6a. As shown in FIG. 6, a pipe joint 8 connecting the vent pipe 6b of the short float 6 and the vent pipe 7a of the long float 7 is connected. It is connected to the.

  Then, at the end opposite to the one where the three-way valve 11 of the float / sink type float 4 is provided, as shown in FIG. 7, a forced sink weight W for promoting the sink of the float / sink type float 4 is provided. This forced sinking weight W is composed of a plurality of weight blocks Wa, Wa..., And is attached at the lower end of the short float 6 and the long float 7 and at a position close to the connector c with a predetermined interval. It has been.

  By the way, the pollution prevention film 3 is a polyester sheet formed in a horizontally long rectangular shape, and sews the reinforcing belt 3a in a lattice shape, and attaches a weight chain Wb for preventing rolling up along the edge of the lower end. The upper edge is connected to the lower end of the float 2 and is suspended in water (see FIGS. 1, 4 and 7).

  Further, similarly to the weight chain Wb, the pollution prevention film 3 is provided with an intermediate weight Wc for preventing the rising due to the water flow at the entire length of the intermediate portion in the depth direction. The intermediate weight Wc is a small block and is fixed at a substantially constant interval. The pollution prevention film 3 can be divided for each of the float / sink type float 4 and the fixed type float 5, and is connected by a connection fitting 9 and a binding string 10 at the division part.

  Next, the effect | action of the pollution prevention apparatus 1 is demonstrated.

  The pollution control device 1 in FIG. 8A shows a state in which the inside of the float / float type float 4 is filled with air and floated on the water surface. Then, the floating float 4 is sunk when the work ship is passed or only clear upper water out of the inflow water from the upstream river is circulated to the dam body side.

  In order to sink the float / float type float 4, air is supplied from the air supply hose 14 to the operation portion 11 a of the three-way valve 11 to switch to the exhaust side, and the filled air is supplied via the air supply / exhaust pipe 13. To discharge from. Then, the buoyancy type float 4 has a reduced buoyancy and gradually sinks due to its own weight and the weight of the pollution prevention film 3 (see FIGS. 1 and 5) including the weight chain Wb and the intermediate block Wc.

  At this time, as shown in FIGS. 8 (b) to 8 (d), the float / float type float 4 is sequentially set so that the portion where the forced sinking weight W is provided is most depressed and the other portions follow it. Since it sinks, a part of the air remains without being discharged inside the short float 6 to which the weight block Wa is fixed, and an air pool X is generated.

On the other hand, the long float 7 sinks in order from the end where the weight block Wa is provided. At that time, the long float 7 sinks obliquely with the short float 6 close to the three-way valve 11 facing upward. . When a part of the long float 7 and the short float 6 that have sunk is crushed by the water pressure, the discharge of air stops, and an air reservoir X ′ of air that has not been discharged into the short float 6 is generated. Arise.

  In this way, as shown in FIG. 7 (e), the float / float type float 4 is in a state of being submerged in water except for the ends of the short floats 6 and 6 having the air reservoirs X and X '. It is possible to distribute upper-layer water and to pass work boats from the position. Further, the fixed float 5 is in a state where the connecting portion between the short floats 6 and 6 and the fixed floats 5 and 5 is not submerged and floats on the water surface, so that the entire length can be maintained on the water surface. it can.

  In order to float the sinking float 4 again on the surface of the water, the three-way valve 11 is switched to the supply side by supplying air to the operating portion 11a, and the air in the supply hose 12 is supplied to and exhausted from the float and sink type float 4 Feed through tube 13. At this time, the air sent from the air supply / exhaust pipe 13 to the pipe joint 8 is supplied to the long float 7 and one short float 6 and also to the other short float 6 via the long float 7. Is done. In this way, the float / sink type float 4 to which air is supplied has buoyancy, and therefore floats again on the water surface.

  In the above embodiment, the air supply / exhaust pipe 13 is extended along the short float 6 and connected to the pipe joint 8 between the long float 7 and the short float 6. However, as shown in FIG. It is also possible to connect to the vent pipe 6b. In such a case, if the three-way valve 11 is left on the exhaust side, the air in the air pool X ′ of the float / float type float 4 will escape, so the three-way valve 11 is operated while confirming the sinking state of the float / float type float 4. However, since the amount of air to be discharged can be adjusted, there is an advantage that the length of the float / sink type float 4 to be sunk can be appropriately adjusted.

  In addition, although air supply and exhaust of the float / float type float 4 are performed by the air supply / exhaust pipe 13, an air supply port and an exhaust port can be provided separately to change the supply position and the exhaust position. . In that case, the air supply port may be provided anywhere on the floating float 4, but the exhaust port extends from the position of the forced sinking weight W to the end opposite to the side where the forced sinking weight W is located. To be provided.

  Then, the forced sinking weight W is attached to the float / float type float 4, but it may be attached to the side end of the pollution prevention film 3. When the weight W for forced settlement is attached to the pollution prevention film 3, when the buoyancy of the float / float type float 4 is lowered, the part to which the weight W for forced settlement is attached sinks most and is pulled by this part. Since a part of the float / float type float 4 positioned above the forced sinking weight W sinks in a state where it is lower than the other parts, the same effect as the above embodiment can be obtained. Note that the forced sinking weight W can be attached to both the float / float type float 4 and the pollution prevention film 3. In this case, air discharge is promoted and the sink rate of the float / float type float 4 is increased. You can quickly work on ships.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a portion provided with a float / float type float, showing an embodiment of the float / flood type pollution control apparatus according to the present invention. It is the elements on larger scale of the A section in FIG. It is the elements on larger scale of the B section in FIG. It is the elements on larger scale of the C section in FIG. FIG. 2 is an enlarged plan view of a portion C in FIG. 1 and shows a mounted state of a three-way valve. It is the elements on larger scale of the connection part of a long float and a short float, and has shown the connection state of an air supply / exhaust pipe. It is the elements on larger scale including the circumference | surroundings of A part in FIG. 1, and has shown the attachment state of the weight for forced settlement. (A)-(e) is explanatory drawing which shows the state in which the float / float type float of the float / flood type pollution prevention apparatus of FIG. 1 sinks. FIG. 5 is a partially enlarged view showing another embodiment of the floating and sinking pollution control device according to the present invention and showing the connection state of the air supply and exhaust pipes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floating / pollution prevention device 2 Float 3 Pollution prevention film 4 Floating / floating float 5 Fixed float 6 Short float 7 Long float 11 Three-way valve 11b Exhaust port 13 Exhaust port W Force weight for subsidence Wa Weight block Wb Weight chain

Claims (4)

A float that floats on the water surface, and a pollution prevention film that is attached to a weight that prevents dripping and is suspended from the float. Each end of the float-float type float is a pollution prevention device in which a fixed float that is always floating on the water surface is connected,
A forced sinking weight is disposed at one end of the float / float type float at a position closer to the middle in the longitudinal direction by a predetermined distance from the end of the float and the internal air is discharged to the other end. The exhaust is located ,
The portion provided with the weight for forced subsidence is sunk in the most depressed state due to the discharge of air from the exhaust port, and the one end and the other end of the float-float type float are stopped by the discharge of air from the exhaust port. An anti-contamination device, characterized in that air is left at the end . Another forced settlement weight is provided on the anti-contamination film suspended by the float / float type float, and the separate forced sink weight is located below the forced settlement weight of the float / float type float. pollution prevention device according to claim 1, characterized in that it is arranged. A float that floats on the water surface and a pollution prevention film that is attached to a weight that prevents dripping and is suspended from the float, and at least a part of the float is a float-float type float that can float and sink by taking in and out of the air. Each end of the float-float type float is a pollution prevention device in which a fixed float that is always floating on the water surface is connected,
A forced sinking weight is disposed at a position closer to the middle in the longitudinal direction by a predetermined distance from the end of the same side end at one side end of the antifouling film suspended from the floatation type float, At the end of the float-float type float opposite to the one where the forced sinking weight is disposed, an exhaust port for discharging the internal air is disposed ,
The portion provided with the weight for forced settlement by sinking air from the exhaust port sinks in the most sinked state, and the one end and the other end of the float-float type float by stopping the discharge of air from the exhaust port An anti-contamination device, characterized in that air is left at the end .   The said exhaust port is provided in the position close | similar to a longitudinal direction intermediate part only a predetermined distance from the terminal of the edge part of the said float / float type | mold float to which it has been arrange | positioned. Pollution prevention equipment.

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