JP2011021323A - Water sampling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water sampling device which has a simple structure constituted by combining a water sealing rod and a water sampling pipe together, without use of structurally-complicated inner and outer pipes, and which can perform continuous water sampling at each depth. <P>SOLUTION: This water sampling device includes the plurality of connectable/disconnectable water sealing rods 1 which are vertically connected together and lowered into water, and the plurality of connectable/disconnectable water sampling pipes 2 which are vertically connected together through the water sealing rods 1 and lowered into the water. An upper connecting implement 9 is fixed to an upper end of the water sealing rod 1; a lower connecting implement 10 is fixed to a lower end thereof; the lower and upper connecting implements 10 and 9 are connectably formed; an O-ring 13, which seals the water by coming into contact with an inner peripheral surface of a lower portion of the water sampling pipe 2, is attached to the outer periphery of the lower connecting implement 10; a bottom cover 3 for supporting the water sampling pipe, which supports the water sampling pipe 2, is attached to the lower connecting implement 10 of the lowermost water sealing rod 1; and a pin insertion hole 15 for inserting a fall prevention pin 14 for supporting the water sealing rod 1 is formed in the upper connecting implement 9. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water sampling apparatus that can drop water into a borehole, a well, a sea, a river, or the like to collect water at various depths at a time.

  In order to grasp the groundwater contamination by volatile organic compounds, heavy metals, agricultural chemicals, oils, etc., the water sampling device is dropped into the water such as a borehole, and the pollutant and concentration are analyzed. The same is true for marine pollution, especially in eutrophication studies in closed waters close to large cities and water quality studies affecting river ecosystems.

  In the conventional water sampling device, most of the water sampling devices are only at one place at a predetermined depth, and no device that can continuously sample water at every depth was found. Therefore, it took time to sample water at each depth.

  In view of this, the present applicant has proposed a groundwater sampling apparatus that can drop groundwater into a borehole or well and collect groundwater at each depth in a single process (see Patent Document 1).

  The groundwater sampling apparatus described in Patent Document 1 is a vertical groundwater sampling apparatus that drops in a borehole and collects groundwater at various depths, and first drops the groundwater in the borehole. Bottomed inner pipes that can be connected / separated in the direction and outer pipes that can be connected / separated in the vertical direction surrounding the inner pipes after groundwater is sampled in each connected inner pipe and lowered into the borehole Become. The inner tube has an outer tube supporting flange that supports the lowermost outer tube at the lower end of the inner tube, and the upper portion of the inner tube is inserted into the boring hole of the inner tube and pulled up. In order to prevent the inner pipe from falling, a pin insertion hole for inserting a fall prevention pin supported by an annular opening collar surrounding the opening of the boring hole is formed oppositely, and groundwater A water flow opening for inflow and outflow is provided, and the outer pipe is attached with an O-ring having a width in contact with the outer circumference of the inner pipe, surrounding each inner pipe within the boring hole so as to be sealed with water. ing.

Japanese Patent No. 4187226

  The water sampling device of Patent Document 1 is composed of an inner tube and an outer tube, and the inner tube has slits, holes, meshes, etc. through which groundwater passes through the outer periphery of a bottomed cylindrical container with an open top. In order to provide a water passage opening and connect the inner pipes by screwing, it is necessary to form an outer screw on the outer periphery of the upper end and an inner screw on the inner periphery of the lower end. Further, the outer tube needs to have an outer screw on the outer periphery of the upper end and an inner screw on the inner periphery of the lower end, a stepped portion on the inner periphery of the lower end, and an O-ring attached. For this reason, both the inner tube and the outer tube are complicated in shape and structure, and it takes time and effort to manufacture the inner tube and the outer tube.

  The O-ring provided at the tip of the outer tube must be fixed by adjusting the degree of contact with the inner tube by tightening the outer and inner screws of the upper and lower outer tubes in order to prevent water leakage. The setting by tightening took time and effort.

  In view of this, the present invention continuously collects each depth with a simple structure in which a water sealing rod and a water sampling tube are combined without using an inner tube having a complicated shape or an outer tube having an O-ring. A water sampling apparatus capable of water is provided.

  The water sampling apparatus of the present invention includes a plurality of connectable / separable water sealing rods that are connected in the vertical direction and lowered into the water, and a plurality of connection / separations that are connected in the vertical direction through the water sealing rods and lowered into the water. It is a water sampling device that is made up of a possible water sampling pipe and collects water at every depth by being dropped into the water, and the water sealing rod has an upper connector fixed to the upper end and a lower end to the lower end. The lower connector is fixed, and in the upper and lower water seal rods to be connected, the lower connector of the upper water seal rod and the upper connector of the lower water seal rod are formed to be connectable, An O-ring is attached to the outer periphery of the lower connector so as to be in contact with the inner peripheral surface of the lower part of the water sampling pipe and sealed, and the lowermost water sampling pipe is attached to the lower connector of the lowest water sealing rod. A bottom cover for supporting the water sampling pipe is attached, and the upper connector is Wherein the pin insertion hole for inserting a drop prevention pin for supporting the water sealing rod for preventing falling of the water sealing rod at the time and pulling down of the sealing rod is formed.

  The water sampling apparatus of the present invention is a combination of a water sealing rod and a water sampling pipe having a shape with a small number of processed parts without using the inner and outer pipes having a complicated structure described in Patent Document 1 of the related art. Since the lower part is sealed with water, the structure is simple and it is possible to easily assemble and collect water without taking time and effort. Moreover, since there are few process parts compared with the water sampling apparatus using an inner tube and an outer tube, manufacture is also easy and cost can be reduced.

  In the conventional Patent Document 1, it takes time to set the outer tube by tightening the outer tubes to adjust the degree of contact with the inner tube by the O-ring. Since an O-ring that is in contact with the inner peripheral surface of the lower part of the water sampling pipe is attached, adjustment of the O-ring becomes unnecessary and setting is not time-consuming.

  In the water sampling apparatus of the present invention, the water sampling pipe is an independent water-sealed water sampling device with a specified length when pulled up, so that ground water at a predetermined depth can be reliably sampled.

  In the water sampling apparatus of the present invention, the water sealing rod and the water sampling pipe can be freely extended and shortened by connecting the screws, so that it is possible to cope with any depth.

  The water sampling device of the present invention has a simple structure in which the water sealing rods and the water sampling pipes are connected with screws, so that when the depth is shallow, it is light and can be operated by one person with a simple operation while being held by hand. It is.

It is a schematic diagram which shows the state which set the water sampling apparatus of this invention to the boring hole. It is a disassembled perspective view which shows the water collection pipe | tube and water sealing rod of the water sampling apparatus of this invention. (A) is sectional drawing which connected the upper and lower water sampling pipe, (b) is sectional drawing which isolate | separated the water sampling pipe and shows the state which set the fall prevention pin to the pin insertion hole. It is a top view which shows an example of the water sampling pipe holder used when taking down the water sampling pipe of the water sampling apparatus of this invention. It is a figure which shows the state which connects the rod for water sealing of the water sampling apparatus of this invention. It is a figure which shows the state which connected the rod for water sealing of the water sampling apparatus of this invention, and was lowered | hung to the bottom of the boring hole. It is explanatory drawing of the procedure which connects the water sampling pipe | tube of the water sampling apparatus of this invention. It is explanatory drawing which shows the state which dropped the water sampling pipe | tube of the water sampling apparatus of this invention, and sampled water. It is explanatory drawing of the sample water sampling procedure for every pulling-up depth of the water sampling pipe | tube of the water sampling apparatus of this invention.

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

  In FIG. 1, in the water sampling apparatus of the present invention, a plurality of water sealing rods 1 are connected in the vertical direction, and the water sampling pipes 2 are connected in the vertical direction by being surrounded by the water sealing rods 1. The water sampling tube 2 is supported by the water sampling tube supporting bottom cover 3 of the lowest water sealing rod 1a. The connected water sealing rod 1 and the water sampling pipe 2 are hung on the hook connector 4 attached to the upper part of the uppermost water sealing rod 1 and hooked with the wire 6 from the tower 7 to the borehole 8 or well. It is hung inside and set. When collecting water in the sea or river, set up a tower in the water or fix a guide tube with a strainer on the carriage, and connect the water seal rod 1 and the water sampling tube 2 connected in the water Suspend on and set.

  1 to 3, the water sealing rod 1 is a pipe or bar having a circular cross section, and is made of a material that does not change chemically, such as stainless steel. The water sealing rod 1 is determined by the unit depth of water sampling, and for example, the water sealing rod 1 has a length of about 1 m and samples water every about 1 m.

  An upper connector 9 is fixed to the upper end of the water sealing rod 1, and a lower connector 10 is fixed to the lower end. A screw rod 11 having an outer thread formed on the outer periphery is provided on the upper surface of the upper connector 9, and a screw hole 12 having an inner screw formed on the inner periphery is provided on the lower surface of the lower connector 10. The sealing rod 1 is such that the upper connector 9 and the lower connector 10 face each other, and can be connected or separated by the screw rod 11 and the screw hole 12.

  An O-ring 13 in contact with the inner peripheral surface of the lower part of the water sampling pipe 2 is attached to the outer periphery of the lower connector 9. The O-ring 13 is made of elastic silicon rubber that does not change chemically. When the water sealing rod 1 is passed through the water sampling tube 2, the O-ring 13 in contact with the inner peripheral surface of the water sampling tube 2 is pressed to seal the lower part of the water sampling tube 2, and separation at each water sampling depth is performed. Water leakage can be prevented at the time of water transfer on the ground after the water collection pipe 2 is pulled up.

  Among the lower connectors 10, the lower connector 10 of the lowest water sealing rod 1a further supports the lowermost water sampling tube 2a, so that the bottom cover for supporting the water sampling tube projecting from the outer periphery of the lower connector 10 is used. 3 is attached. The bottom cover 3 for supporting a water sampling tube may be formed integrally with the lower connector 10 or may be attached by forming a screw at the lower end of the lower connector 10 and screwing it.

  A drop prevention pin 14 (FIG. 3) that supports the water sealing rod 1 is inserted into the upper connector 9 in order to prevent the water sealing rod 1 from dropping when the water sealing rod 1 is lowered and pulled up. The pin insertion hole 15 penetrates in the horizontal direction. As shown in FIG. 3A, the pin insertion hole 15 is surrounded by the upper water sampling pipe 2 in a state where the upper and lower water sampling pipes 2 are connected, and the upper water sampling pipe 2 is loosened and the upper sampling pipe 2 is loosened. When the water pipe 2 is separated, the water pipe 2 is formed at a position appearing between the upper and lower water sampling pipes 2 as shown in FIG. The fall prevention pin 14 inserted into the pin insertion hole is supported by a pin support base 16 installed surrounding the water sampling pipe 2.

  The water sampling tube 2 is formed of a cylindrical tube that is open at the top and bottom. In order to join the upper and lower water sampling pipes 2 with screws, the water sampling pipes 2 are formed with external screws 17 or internal screws 18 at their upper and lower ends, and are connected by screwing the external screws 17 and the internal screws 18 together. The water sampling tube 2 is made of a material that does not change chemically, such as stainless steel. The water sampling tube 2 is pressed by an O-ring 13 attached to the outer periphery of the lower connector 10 being in contact with the inner peripheral surface of the lower portion of the water sampling tube 2, so that the lower portion is closed and a water-sealed state.

  In FIG. 4, the water sampling tube holder 19 used when lowering the water sampling tube 2 is divided into two elastic members 20 such as silicon rubber packing that are opposed to each other so as to surround the water sampling tube 2. The holding body 21 is tightened by a wing nut 22 and held with the water sampling pipe 2 interposed therebetween, and is supported by a pin support 16 installed so as to surround the water sampling pipe 2.

  Next, the use procedure of the groundwater sampling apparatus of the present invention will be described with reference to FIGS.

(1) Connection of water sealing rod
5 and 6, the fall prevention pin 14 is inserted into the pin insertion hole 15 formed in the upper connector 9 of the lowermost water sealing rod 1 a having the bottom cover 3 for supporting the sampling tube at the lower end, The water sealing rod 1 is supported by a pin support 16 installed around the opening of the boring hole 8.

  After positioning the second water sealing rod 1 connected on the lowest water sealing rod 1a supported by the fall prevention pin 14, the second water sealing rod 1 is rotated to rotate the lower connector 10. The screw hole 12 and the screw rod 11 of the upper connector 9 of the lowermost water sealing rod 1 are screwed together to be connected.

  When the connection of the upper and lower water sealing rods 1 is completed, the hook connector 4 is attached to the upper connector 9 of the second water sealing rod 1 to which the hook connector 4 is connected, and the hook of the wire 6 is attached to the hook connector 4. 5, the fall prevention pin 14 is removed from the pin insertion hole 15 of the lower water sealing rod 1, and the connected water sealing rod 1 is lowered.

  Thereafter, the pin 14 is supported by the pin support 16 through the pin 14 for the second water sealing rod 1 connected to the pin insertion hole 15 through the fall prevention pin 14. When the depth of the connected water sealing rod 1 is shallow, it is light and can be lowered while being held by hand. However, when the depth is deep, in order to prevent an accidental drop when descending, The hook connector 4 is attached to the water sealing rod 1, and the hook 5 is hung and lowered so that the pin insertion hole 15 of the water sealing rod 1 is passed through the fall prevention pin 14 and supported on the pin support 16.

  As described above, the water sealing rod 1 is connected by repeating the steps of supporting the water sealing rod 1 with the fall prevention pins 14, connecting the water sealing rods 1, and lowering the connected water sealing rods 1. I will do it. This connection operation is repeated until the lowest water sealing rod 1 reaches the bottom of the borehole 8.

(2) Connection of water sampling tube In order to sample water at each depth, the water sampling tube 2 is set in a state of being water sealed with each water sealing rod 1.

 7 and 8, first, the water sealing rod is placed in the water sampling tube in a state where the water sampling tube holder 19 shown in FIG. 4 is clamped and held in the lowest water sampling tube 2a surrounding the lowest water sealing rod 1. 1, the water sampling tube 2 is lowered into the borehole 8, and the water sampling tube holder 19 is supported by the pin support 16 at the opening of the borehole 8.

  Next, the second water sampling pipe 2 connected to the lowest water sampling pipe 2a is connected by screwing screws 17 and 18 formed on the water sampling pipe. When the connection of the second water sampling pipe 2 is completed, after attaching the water sampling pipe holder 19 to the second water sampling pipe 2, the water sampling pipe holder 19 attached to the lowest connected water sampling pipe 2a is removed. Then, the second sampling pipe 2 connected is slowly lowered by loosening the wire 6 so that the groundwater in the borehole 8 is not disturbed.

  In the same procedure, the third sampling pipe 2 is screwed into the second sampling pipe 2 and lowered.

  Thus, the attachment of the water sampling pipe holder 19 to the water sampling pipe 2 to be connected, the support of the water sampling pipe 2 by the water sampling pipe holder 19 to the pin support 16 of the boring hole 8, the connection of the water sampling pipes 2, the connected sampling Mounting of the water sampling pipe holder 19 to the water pipe 2 and removal of the water sampling pipe holder 19 in the previous stroke, lowering of the connected water sampling pipe 2, support of the water sampling pipe 2 to the pin support 16 by the water sampling pipe holder 19 Repeat the procedure to connect the water sampling pipe 2 and slowly lower it so as not to disturb the water. This connection operation is performed until the lowest water sampling tube 2 reaches the water tube supporting bottom cover 3 of the water sealing rod 1.

  Thus, each water sealing rod 1 is surrounded by each water sampling tube 2, and the inner peripheral surface of each water sampling tube 2 is pressed by contact with the O-ring 13 fixed to the lower connector 10 of the water sealing rod, respectively. A water seal structure is formed, and water in each depth is sampled and held in the water sampling pipe 2.

(3) Pulling up the water seal rod and the water sampling tube In FIG. 9, the hook connector 4 is attached to the upper connector 9 of the uppermost water seal rod 1b, the hook 5 is hooked on the hook connector 4, and the wire 6 is attached. The water sealing rod 1a is pulled up by pulling. Along with this pulling up, the water sampling tube 2 supported by the water sampling tube supporting bottom cover 7 of the water sealing rod 1 is also lifted.

  Next, when the uppermost water sampling pipe 2b is rotated and separated from the second highest water sampling pipe 2, the pin insertion hole 15 of the upper connector 9 of the second water sealing rod 1 from the uppermost position is raised. Therefore, the fall prevention pin 14 is inserted into the pin insertion hole 15 and supported by the pin support 16, and the second and lower water sealing rods 1 and the water sampling pipe 2 are supported and dropped. To prevent.

  In this state, the uppermost water seal rod 1b is rotated to remove the screw connection by the lower connector 10 and the upper connector 9, and is separated from the second water seal rod 1. Since the hook 5 is attached to the hook connector 4 so as to be able to rotate, the wire 6 is not twisted by the rotation of the water sealing rod 1.

  Since the lower end of the uppermost water sampling pipe 2b is in a water-sealed state in contact with the O-ring 9 of the lower connector 10, it is possible to suppress leakage of ground water sampled.

  The separated water sealing rod 1 and the water sampling tube 2 are taken out, and the water in the water sampling tube 2 is transferred to a sample container for analysis.

  As described above, after separating the water sampling tube from the water sampling tube below it and supporting the water sealing rod by inserting the fall prevention pin into the pin insertion hole, the upper water sealing rod is used for water sealing below it. By repeating the procedure of separating from the rod and transferring the separated water in the water collection tube to the sample container for analysis, water at each depth can be collected in sequence.

  After collecting the water, the water sealing rod 1 and the water sampling tube 2 are carefully washed with water or a neutral detergent using a brush, towel, etc. in preparation for the next water sampling so that no contaminated water remains. To do.

1: Rod for water sealing 1a: Rod for water sealing at the lowest level 1b: Rod for water sealing at the highest level 2: Water sampling tube 2a: Water sampling tube at the lowest level 2b: Water sampling tube at the highest level 3: Bottom cover for supporting the water sampling tube 4: Hook connector 5: Hook 6: Wire 7: Rooster 8: Boring hole 9: Upper connector 10: Lower connector 11: Screw rod 12: Screw hole 13: O-ring 14: Fall prevention pin 15: Pin insertion Hole 16: Pin support 17: External screw 18: Internal screw 19: Sampling pipe holder 20: Elastic material 21: Elastic body holder 22: Wing nut

Claims (2)

It consists of a plurality of connectable / separable water sealing rods that are connected in the vertical direction and taken down in the water, and a plurality of connectable / separable water sampling tubes that are connected in the vertical direction through the water sealing rods and taken down in the water, A water sampling device that drops water into the water and collects water at each depth,
The water sealing rod has an upper connector fixed to the upper end and a lower connector fixed to the lower end, and the lower connection of the upper water sealing rod in the upper and lower water sealing rods to be connected. A tool and the upper connector of the water sealing rod underneath are formed to be connectable,
An O-ring is attached to the outer periphery of the lower connector so as to be in contact with the inner peripheral surface of the lower portion of the water sampling tube and sealed, and the lowermost water sampling tube is connected to the lower connector of the lowest water sealing rod. A bottom cover for supporting the water sampling tube is attached,
The upper connector is provided with a pin insertion hole for inserting a fall prevention pin for supporting the water seal rod that prevents the water seal rod from dropping when the water seal rod is lowered and pulled up. Water sampling device characterized by.   The water sampling apparatus according to claim 1, wherein the upper connector is connectable with a hook connector for hanging a hook for hanging a water sealing rod.

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