JP2003014176A - Movable bent connector pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable bent connector pipe capable of shifting a position of piping as connected, to solve the problem in a current flange fastening method that the flange part is perfectly fixed, and then it is difficult to shift the position of piping in a device with the structure that a suction piping and a transfer piping are connected to a pump. SOLUTION: A plurality of bent pipes 2, in which two or more projection parts 2c annularly standing with an equal space in the circumferential direction and a narrow and long hole 2d having a dimension possible to pass a bolt through are arranged, are used. A sliding member having a small friction resistance value is adhered to an annular space between the projection parts 2c and 2c, and the flange parts 2b and 2b are made to abut on each other, and connected to each other by a bolt and a nut. The bent pipe can be moved through the sliding member and the long and narrow hole 2d. At least three or more movable joint parts are provided to move the movable bent connector pipe in the three-dimensional direction, and this bent pipe is appropriately connected to an end or an intermediate part of the suction piping and the transfer piping to enable the position shifting or the piping.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the mixing of a liquid with a solid having a small particle size such as water, water and the like, in a process of recovering sediment from the bottom of a lake or a river. If the body is to be suction-transferred using a device that connects the suction pipe and the transfer pipe to the pump, and if the position of the suction pipe or the transfer pipe needs to be moved, place it at the end or the middle of the suction pipe or the transfer pipe. The present invention relates to a movable connection bending pipe that can move the position of a suction pipe or a transfer pipe by being connected appropriately. [0002] In recent years, in a dam, the accumulation of sediment in a water storage portion has progressed to such an extent that the significance of the dam is questioned, and the process of collecting the sediment has become an urgent issue. At the same time, the accumulation of sediments is rapidly progressing in rivers, lakes, and the like, and similar measures for recovery processing are urgently required. Various countermeasures have been already attempted to solve the above-mentioned problems, but sufficient conditions have not been found due to the different conditions attached to each target case. It is thought that the reality is that they are trying to advance the task. As a main recovery method of sediment on the bottom of the water at the present time, for example, there is a method of combining a dredge ship and a barge ship, collecting sediment on the bottom of the water by a dredge ship, and transferring the sediment by a barge ship,
As another example, a method of incorporating a swivel-like bucket-like device into a collecting device portion for collecting sediment at the bottom of the water to expand the recoverable range, and transferring the sediment by a fixed connection pipe or the like. There is. However, in the method of combining the dredger and the barge ship, it is necessary to devise a method of transferring and processing the sediment collected from the barge ship, and to increase the efficiency of the sediment collection process by increasing the scale. It is necessary to increase the amount of collection by increasing the size.In addition, in the method of incorporating a device similar to a pivotable bucket in the collection device portion, there is a facility similar to a relay tank between the device and the transfer pipe. These methods tend to increase the scale of equipment and related equipment due to the necessity and need to increase the scale, and these methods can be used in large rivers and lakes, and are useful and useful. However, it is difficult to install equipment and related equipment in dam reservoirs or small rivers and lakes in steep places. For, it is inferred as it is difficult to use the method described above. Also, in the reservoir of the dam, it is difficult to use the above-described method, and in many cases, a gate for discharging sediment is provided near the bottom of the dam in advance. When attempting to discharge sediment using the gate, the water pressure near the gate is large and the amount of discharged water is very large, and the efficiency of the treatment of sediment is not as high as the amount of water. In addition to waste, polluted water has a negative effect on the downstream basin, and there have been cases in which attempts have been made to cause social problems, and in fact the precious gates are not used much. For this purpose, as an alternative method, a method of excavating and collecting sediment appearing in the vicinity of the water surface during the drought period using an excavator has been used, but in this method, the recovery range is limited, and furthermore, while worrying about rainfall, As well as excavation, many of the dams are often used for drinking water, which can pollute precious stored water during the drought season. For this reason, in the reservoirs of steep dams or in small rivers and lakes, effective measures for sediment recovery have not been taken, and sediment recovery has been slow. There is no actual situation. For this reason, there is a demand for a proposal of a measure that can easily collect and process the sediment. A device in which a suction pipe and a transfer pipe are connected to a pump is a very useful device as means for sucking and transferring a liquid or a mixture of a liquid and a solid having a small particle diameter. However, in the above-mentioned apparatus, there is a problem that there is a limit in sucking a solid having a large particle diameter, and there is a problem that a pump function may be deteriorated or impossible if sucked intentionally. When connecting the suction pipe and the transfer pipe, it is difficult to move the position of the pipe because the flange is completely fixed. There is also a problem that it is difficult to move the position. However, the sediments on the bottom of the reservoir, such as dam reservoirs and lakes and rivers, have various particle sizes and need to be moved to the collection position. It is thought that an apparatus in which a suction pipe and a transfer pipe are connected to each other may not be a promising candidate as an apparatus for collecting and processing the sediment. However, if the above-mentioned problems of the device can be solved, unlike the method of combining a dredger and a barge ship having a very large scale as described above and the method of incorporating a device similar to a swingable bucket, It is expected that the scale of equipment and facilities can be reduced, and the limitation of the recovery range, which is the issue of the method of excavating and collecting sediment that appeared on the water during the drought season, should be eased and there is a need to worry about rainfall It can be expected that contamination of precious stored water during the drought period can be avoided without any possibility, so that it can be a powerful candidate as an apparatus for sediment recovery processing. SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and is very useful as a means for sucking and transferring a liquid or a mixture of a liquid and a solid having a small particle diameter. When the suction pipe and the transfer pipe are connected by the conventional method of fastening the flange, which is one of the problems of the apparatus in which the suction pipe and the transfer pipe are connected to the pump which is a useful apparatus, the flange portion is completely fixed. It is difficult to move the position of the pipe, and it is difficult to move the pipe in conjunction with the movement of the suction position in the process of collecting the sediment at the bottom of the water, and it is difficult to move the pipe. Another problem in this case is that the pump mechanism has a limit in sucking solids having a large particle size, and if sucked, the pump function may be reduced or disabled. For example, the present inventors have already filed a “pump solid substance blockage countermeasure device (Japanese Patent Application No. 2001-1337).
38)), a device for controlling the particle size of the suctioned solid is attached to the suction port of the suction pipe, or the countermeasure using a separate device for controlling the particle size of the suctioned solid is performed. The suction pipe and the transfer pipe connected to the dam are easily used as a device for collecting and processing small-sized solids such as sediment on the sediment at the bottom of the dam or rivers and lakes. It is intended to contribute to the urgent issues of sediment collection processing and the urgent sediment collection processing in rivers and lakes. [0005] In order to achieve the above-mentioned object, a movable connecting bending pipe according to the present invention uses a device in which a suction pipe and a transfer pipe are connected to a pump, and has a small solid particle size. When a mixture of liquid and liquid is to be transferred by suction, a bending pipe that enables the position of the suction pipe or the transfer pipe to be moved by connecting the suction pipe or the transfer pipe to an end portion or an intermediate portion as appropriate is provided. A plurality of connected movable connection bending pipes, wherein the connection bending pipe has a flange portion having a plurality of holes through which bolts for connection can be inserted at both ends, and at least one end has a flange portion. Has two or more circumferentially uniform dimensions, has a protruding portion that stands up in an annular shape, and has an elongated shape in which holes through which bolts can be inserted are extended while maintaining dimensions that allow bolts to be inserted in the circumferential direction. hand I have. The connecting portion to which the bending pipe is connected has a flange portion, which has a symmetrical shape at the joining surface, fastened by a bolt and a nut, and a space formed annularly between the projecting portions has a frictional resistance. A sliding member for contributing to the sliding of the bending tube is provided with a material having a small value, and the bending tube is made movable by an elongated hole through which the sliding member and the bolt can be inserted, and the bending tube is bent. It is characterized in that a plurality of pipes are connected to each other and at least three or more movable connection parts are provided so that the whole movable connection bending pipe can be moved in a three-dimensional direction. By appropriately connecting, the position of the suction pipe and the transfer pipe can be moved. Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the examples described below unless departing from the gist. The application of the present invention is applicable only to a case where a suction pipe and a transfer pipe are connected to a pump for collecting and processing small-sized solids such as sediment on the bottom of a water reservoir or a river, a lake, or a marsh. The present invention is applied not only to a device but also to a general device in which a mixture of a solid having a small particle size and a liquid is connected to a pump by a suction pipe and a transfer pipe. FIG. 1 is a schematic perspective view showing an example of a bending pipe having a protruding portion which is annularly upright at flange portions at both ends, which is a main constituent member of a movable connection bending pipe of the present invention, and FIG. 2 is a bending view shown in FIG. It is sectional drawing of a pipe. FIG. 3 is a schematic perspective view showing an example of a bent pipe having a protruding portion which is annularly upright on a flange portion of only one end used for a section connected to a suction pipe or a transfer pipe of a pump main body. FIG. 4 is a sectional view of the bending pipe shown in FIG. FIG. 5 is a schematic perspective view of a connecting straight pipe used instead of the bent pipe of FIG.
FIG. 6 is a sectional view of the straight pipe of FIG. 5. FIG. 7 is a front view in the case where there are five bolt holes on the flange portion side having a protruding portion that stands up in an annular shape. FIG. 8 is a cross-sectional view of a case where flange portions having a protruding portion that stands up in an annular shape are fastened to each other.
FIG. 9 is a perspective view of the sliding member provided in the annular space between the projecting portions of the flange portion. FIG. 10 is a plan view or an elevation view showing an example in which four bending pipes are connected and five movable parts are incorporated. A movable connecting bending pipe 1 according to the present invention is shown in FIG.
2, two or more circumferentially uniform protrusions 2 are formed on the flange portions 2b at both ends in an annularly upright manner.
The bent pipe 2 having a plurality of holes 2d through which the bolts for connection with the plug c can be inserted and a reinforcing portion 2e for reinforcing the strength of the flange portion 2b in the vicinity of the outermost peripheral portion is used as a main constituent member. 3 and 4 in order to arrange two or more pieces in the middle part as appropriate, and to connect the connected both ends of the bending pipe 2 to a direct connection pipe or a suction pipe or a transfer pipe of the pump body.
As shown in FIG. 3, the flange portion 3b at one end only has two or more circumferentially uniform dimensions in the circumferential direction, and the protrusion portion 3 stands up in an annular shape.
c, a plurality of holes 3d through which bolts for connection can be inserted, and a reinforcing portion 3e for reinforcing the strength of the flange portion 3b near the outermost peripheral portion. Alternatively, a bent pipe 3 having a flange portion 3f for connection with a flange portion on the transfer pipe side and a hole 3g through which a connection bolt can be inserted into the flange portion 3f, or one end side as shown in FIGS. Only flange part 4b
And a plurality of holes 4d through which a connecting bolt can be inserted, and a plurality of holes 4d through which connecting bolts can be inserted, and a flange portion 4b provided near the outermost peripheral portion for reinforcing the strength of the flange portion 4b. A flange portion 4f for connecting to a directly connected pipe of the pump body or a flange portion on a suction pipe or a transfer pipe side, and a bolt for connection can be fitted through the flange portion 4f. This is a movable connection bending pipe formed by connecting straight pipes 4 having holes 4g.
Then, as shown in FIG. 8, the movable connecting portion 6 abuts and connects two or more flange portions 2 b having a projecting portion 2 c that stands up in an annular shape while maintaining uniform dimensions in the circumferential direction,
FIG. 9 shows an annular space formed between the projections 2c and 2c.
As shown in FIG. 1, an annular sliding member 5 made of a material having a small frictional resistance is provided, and is fastened by bolts and nuts 7. The connection with the bending pipe 3 or the straight pipe 4 is also made in accordance with the above. Further, it is preferable to use a nut having a loosening prevention function such as a double nut or a lock nut. Further, it is preferable that the surface of the washer 8 attached to the bolt / nut 7 has a small frictional resistance according to the sliding member 5, and the surface of the body of the bolt is processed to reduce the frictional resistance. preferable. As shown in FIG. 10, the movable connection bending pipe 1 is used by being connected to a directly connected pipe of a pump body or a flange portion on the suction pipe or transfer pipe 9 side by bolts and nuts. Hereinafter, the main parts will be described in detail. The bending tube 2 is made of a metal, a hard plastic having a strength capable of achieving the object of the present invention, or a composite material thereof. In the shape, as shown in FIGS. 1 and 2, a pipe portion 2 a having a curved portion at an intermediate portion and flange portions 2 at both ends.
b, a plurality of holes 2d through which a connecting bolt can be inserted, and a plurality of holes 2d through which a connecting bolt can be inserted, and a plurality of holes 2d in the vicinity of the outermost peripheral portion. Has a reinforcing portion 2e for reinforcing the strength of the above. The pipe portion 2a has a curved portion at an intermediate portion, and the diameter is appropriately set according to the diameter of the directly connected pipe or the suction pipe or the transfer pipe of the connected pump body, and the bending angle of the curved portion is usually 90 degrees. Set, but approximately 90 depending on the situation
The bending radius is appropriately set in the range of up to 120 degrees, and the bending radius is appropriately set in consideration of the diameter of the pipe so that pressure loss does not significantly occur.
The dimension of the straight pipe part of the pipe part 2a is the same as that of the flange part 2b.
The dimensions are set within a range that does not cause any inconvenience in the fastening operation of the bolts and nuts in the connection. The flange portion 2b
As shown in FIG. 9, the width is set to a size that allows the proper arrangement of the protruding portion 2c, the hole 2d, and the reinforcing portion 2e, and the thickness is set to a thickness according to the pipe portion 2a. One of the protruding portions 2c is disposed in contact with an extended portion of the inner surface of the tube portion 2a, and the other is disposed with an interval at which an annular sliding member is mounted and the function thereof can be exhibited. . The thickness is the tube part 2a.
The thickness of the protrusion is appropriately set in consideration of the thickness of the sliding member. The hole 2d has a shape that is elongated in the circumferential direction except for a part that secures the strength of the flange part 2b while maintaining a width that allows the connection bolt to pass therethrough,
FIG. 7 shows an example in which the number of holes is five, but the holes are evenly arranged according to the number of holes arranged in the range of 4 to 6. The reinforcing portion 2e has a cross-sectional shape similar to that of the protruding portion 2c, and is preferably an annular shape. However, a portion of the annular shape may be deleted as long as the reinforcing effect is not reduced. The material of the bent tube 3 is the same as that of the bent tube 2,
In terms of the shape, a tube portion 3a having a curved portion at an intermediate portion conforming to the specifications of the bent tube 2a, a flange portion 3b having the same shape as the flange portion 2b at one end, and a portion 2c is provided at the flange portion 3b. , Two or more circumferentially uniform protrusions 3c having the same shape as the parts 2d and 2e, and a plurality of holes 3d into which a connecting bolt can be inserted and a plurality of holes 3d through which a connecting bolt can be inserted, and the vicinity of the outermost peripheral part. It has a reinforcing portion 3e for reinforcing the strength of the flange portion 3b. On the other end side, a flange portion 3f for connecting to a direct connection tube of the pump body or a flange portion on the suction pipe or transfer pipe side.
And a hole 3g through which a connecting bolt can be inserted into the flange portion 3f. The specifications of the parts 3b, 3c, 3d, and 3e are set according to the specifications of the parts 2b, 2c, 2d, and 2e. And
The flange portion 3f and the hole 3g are set in accordance with the specifications of the flange portion and the bolt hole on the side of the direct connection pipe or the suction pipe or the transfer pipe connected to the pump body. The straight pipe 4 is made of the same material as the bent pipe 2 and has the same shape as the straight pipe section 4a and the flange section 2b at one end. A flange portion 4b and a portion 2
c, two or more circumferentially uniform projections 4c having the same shape as the part 2d and the part 2e, and a plurality of holes 4d through which a connecting bolt can be inserted, and a plurality of holes 4d through which connection bolts can be inserted, and the vicinity of the outermost peripheral part. Reinforcement part 4 for reinforcing the strength of the flange part 4b
e. The other end has a flange portion 4f for connecting to a flange portion of the pump body directly connected to the suction pipe or the suction pipe or the transfer pipe side, and a hole 4g through which a connection bolt can be inserted. are doing. The length of the straight pipe part 4a is the same as the length of the flange part 4b, 4
The dimension is set within a range that does not cause any inconvenience in the fastening operation of the bolt and nut in the connection of f. And the part 4b,
The specifications of the part 4c, the part 4d, and the part 4e
b, the part 2c, the part 2d, and the part 2e are set according to the specifications. The flange portion 4f and the hole 4g are set in accordance with the specifications of the flange portion and the bolt hole on the side of the directly connected pipe or the suction pipe or the transfer pipe connected to the pump body. The sliding member 5 is connected to the flange portion 2 to be connected.
b, 3b, and 4b are made of a material having a small frictional resistance value that is movable, and the frictional resistance value is selected based on a numerical value of about 0.1 to 0.8 as a coefficient of friction. For example, polyamide, polyoxymethylene, polyphenylene sulfide, polyether ether ketone, polybutylene terephthalate, polyimide, plastic such as ultra-high-molecular-weight polyethylene, or polytetrafluoroethylene, fluororesin fine powder, graphite, It is conceivable that a material obtained by mixing molybdenum sulfide or the like with another hard plastic material and molding the material is used, but a composite material in which a material having elasticity such as rubber is disposed in an intermediate portion using the above material in the surface layer may be used. Even if it is made of a material other than the material, it slides with strength enough to withstand the connection strength to achieve the object of the present invention. Without limitation as long as the small material having frictional resistance to enable sliding in position. The shape of the sliding member 5 is formed in a ring shape, and the dimension setting is set in conjunction with the dimension setting of the protruding portions of the connected flange portions 2b, 3b, 4b. As a result of the connection, the dimensions are set such that a gap of approximately 1 to 5 mm can be secured between the protruding portions to be abutted. According to the present invention, the conventional flange fastening method, which is a problem in using an apparatus in which a suction pipe and a transfer pipe are connected to a pump, is completely fixed because the flange is completely fixed. It is possible to solve the problem that it is difficult to move the position of the pipes and to move the pipes in conjunction with the movement of the suction position due to the collection of sediment on the bottom of the water, such as rivers and lakes, etc. Another problem, which is limited in sucking a solid having a large particle size, is, for example, a “pump solid matter blocking device (Japanese Patent Application No. 2001-1337
38)), a device for controlling the particle size of the suctioned solid is attached to the suction port of the suction pipe, and the problem is entrusted to a countermeasure using a separate particle size control device for the suctioned solid. In recent years, the recovery of sediments in the reservoirs of dams and the sediments at the bottom of rivers, lakes, and marshes, which have become an urgent issue and have become an urgent issue, has been As a device, it is possible to easily use a device in which a suction pipe and a transfer pipe are connected to a pump, and it is expected that the scale of the device and equipment can be suppressed, and the collected sediment is transferred to a place far away. Can be expected, and
There is no need to work too much to be a pump device,
Since it will be possible to operate using nighttime electric power, etc., the scale of equipment and related equipment tends to be very large.Therefore, in the reservoir of a dam in a steep place or in a small river or lake, etc. There is a problem that it is difficult to use it.A method of combining a dredger and a barge ship, a method of incorporating a swivel-like bucket-like device in the recovery unit, and a very large amount of discharged water is required. The wastewater is not efficient, and wastewater is discharged in the vicinity of the lower bottom of the dam, which has the problem that not only waste water but also polluted water has a negative effect on the downstream area and causes social problems. If you try to discharge sediment with a gate provided in advance, or you will be excavating while worrying about rainfall due to the limited recovery range, and use it for drinking water Instead of using excavators to excavate and recover sediments that appeared on the water during the drought period, where there is a problem that water pollution may occur, there is a risk of polluting. It can not only contribute to breaking the present situation where effective measures for sediment recovery treatment in lakes and marshes are not enough, but also can be used for suction and transfer of a mixture of solids and liquids with a wide range of small particle sizes. And contribute to the improvement of environmental and industrial activities.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing an example of a bending pipe having a projecting portion which is annularly upright at flange portions at both ends, which is a main component of a movable connection bending pipe of the present invention. FIG. 2 is a sectional view of the bending tube shown in FIG. FIG. 3 is a schematic perspective view showing an example of a bent pipe having a protruding portion that is annularly upright on a flange portion of only one end used for a section connected to a suction pipe or a transfer pipe of a pump body. FIG. 4 is a sectional view of the bending tube shown in FIG. 3; FIG. 5 is a schematic perspective view of a straight pipe used instead of the bent pipe of FIG. 3; FIG. 6 is a sectional view of the straight pipe of FIG. 5; FIG. 7 is a front view in a case where there are five bolt holes in a flange portion having a protruding portion that stands up in an annular shape. FIG. 8 is a cross-sectional view in a case where flange portions having a protruding portion that stands up in an annular shape are fastened to each other. FIG. 9 is a perspective view of a sliding member provided in an annular space between projecting portions of a flange portion. FIG. 10 is a plan view or an elevation view showing an example in which four bending pipes are connected and five movable parts are incorporated. DESCRIPTION OF THE SYMBOLS 1; movable connecting bending pipe 2 of the present invention; bending pipe 2a having two or more circumferentially uniform protrusions at flange portions at both ends and a ring-shaped upright projection; A pipe portion 2b having a curved portion; a flange portion 2c; a protruding portion 2d that stands up in an annular shape while maintaining two or more circumferentially uniform dimensions; a hole 2e through which a connecting bolt can be inserted; a strength reinforcement of the flange portion 2b. Bending tube 3a having a flange portion at both ends and a protruding portion which is annularly upright at a flange portion at one end thereof; a tube portion 3b having a curved portion at an intermediate portion; two or more circumferences A flange portion 3c having a protruding portion or the like erecting annularly while maintaining uniform dimensions in the direction; a protruding portion 3d erecting annularly while maintaining uniform dimensions in two or more circumferential directions; disposed on the flange portion 3b. Connection bolt fits Hole 3e that can pass through; Reinforcing part 3f for reinforcing the strength of flange part 3b; Flange part 3g for connecting to the direct connection pipe or suction pipe or transfer pipe side of the pump body; For connection provided in flange part 3f A hole 4 through which a bolt can be inserted; a straight tube 4a having a flange portion at both ends and a protruding portion or the like protruding annularly at one end of the flange portion; a straight tube portion 4b; Flange portion 4c having a protruding portion or the like that erects in an annular shape while maintaining dimensions; protruding portion 4d that erects in an annular shape while maintaining two or more circumferentially uniform dimensions; connecting bolts provided in flange portion 4b A hole 4e through which can be inserted; a reinforcing portion 4f for reinforcing the strength of the flange portion 4b; a flange portion 4g for connecting to a direct connection pipe or a suction pipe or a transfer pipe side of the pump body; Hole 5 through which connecting bolts provided in the part 4f can be inserted; sliding member 6; movable connecting portion 7; bolts and nuts 8; washers 9;

Claims (1)

Claims: 1. A suction pipe or a transfer pipe when a mixture of a solid and a liquid having a small particle diameter is to be transferred by suction using an apparatus in which a suction pipe and a transfer pipe are connected to a pump. A movable connecting bending pipe in which a plurality of bending pipes that can move a suction pipe or a transfer pipe by being appropriately connected to an end or an intermediate section are connected, and the connected bending pipes are connected. At each end, there is a flange portion having a plurality of holes through which bolts for inserting bolts can be inserted, and at least one of the flange portions has two or more circumferentially uniform dimensions and an annular upright protruding portion. And a hole into which the bolt can be inserted has an elongated shape which is extended while maintaining a dimension in which the bolt can be inserted in the circumferential direction. The connecting portion to which the bending pipe is connected has a flange portion, which has a symmetrical shape at the joining surface, fastened by a bolt and a nut, and a space formed annularly between the projecting portions has a frictional resistance. A sliding member for contributing to the sliding of the bending tube is provided with a material having a small value, and the bending tube is made movable by an elongated hole through which the sliding member and the bolt can be inserted, and the bending tube is bent. A movable connection bending pipe characterized in that a plurality of pipes are connected to each other and at least three or more movable connection portions are provided to make the entire movable connection bending pipe movable in a three-dimensional direction.