JP5041336B2 - Water sampling structure - Google Patents

Description

  The present invention relates to a water sampling structure for a water sampling pipe that collects sewage from a sewage tank and feeds the sewage to an adjustment tank for water quality measurement.

As a conventional water sampling pipe, there is one that attaches a strainer to the tip thereof to remove impurities and feeds water to a water quality measuring adjustment tank (see, for example, Patent Document 1).
In addition, there are some which remove a contaminant by attaching a filter such as a wire mesh to the water sampling pipe.
FIG. 5 is a side sectional view showing a state in which a water sampling pipe is attached to a sewage tank in which sewage is stored. The detail of the part by which the water sampling pipe 3 was attached to the wall 1a of the sewage tank 1 is shown in FIG. In the figure, 2 is a water stop member and 4 is a water intake. The water intake unit 4 includes a water conduit 41 and a filter 46 provided at the end thereof. This filter 46 is made of a mesh-like wire mesh.
The sewage in the sewage tank 1 is removed from the contaminants by the filter 46, passes through the water guide pipe 41, and is sent from the main body 3 a of the water sampling pipe 3 to the adjustment tank for water quality measurement.
Thus, the conventional water sampling pipe is attached with a mesh-like wire net to remove contaminated portions in the sewage.
Japanese Patent Publication No. 6-50309

Since the conventional water sampling pipe has a structure in which a mesh-like wire net is attached to remove impurities in the sewage, there is a problem in that dust adheres to the wire net and cannot be collected.
In addition, when contaminants adhere, the flow in the pipe becomes turbulent, and gas inflow and generation occur, resulting in a smooth flow and a small-diameter water sampling pipe may have insufficient flow.
The present invention has been made in view of such problems, and an object of the present invention is to provide a water sampling tube that can prevent the adhesion of impurities and can smoothly collect water without inflow or generation of gas. To do.

In order to solve the above-described problem , according to one aspect of the present invention, a water guide pipe that guides water in a tank to a water sampling pipe, and an inner diameter that is larger than the outer diameter of the water guide pipe, one end is blocked. A sheath tube formed so as to be able to accommodate a part of the water conduit from the other end side that opens , a fixing member that fixes the water conduit substantially vertically to the inner wall of the tank, and the water conduit And a fixing screw for fixing the sheath tube, a water control opening having a gap is provided between the other end of the sheath tube and the fixing member, and an inner periphery of the sheath tube By providing a laminar flow part having a substantially parallel gap in the overlapping part with the outer periphery of the water conduit, the water in the tank passes through the water control opening and the laminar flow part, is configured to be guided to the water conduit, it is adopted water structure applied.
Further, one of the water conduits may be housed inside the sheath tube, and the other of the water conduits may be formed to penetrate the fixing member and the wall of the tank and protrude outside. Good .
Further, the water conduit is composed of a water conduit that leads to the water sampling tube, and a second water conduit that has an inner diameter that is larger than the outer shape and that can accommodate one of the water conduits that leads to the water sampling tube, And by connecting with a mounting screw so as to have a gap substantially parallel to the overlapping portion of the inner periphery of the second conduit and the outer periphery of the conduit leading to the water sampling tube, the water in the tank is The other of the water guide pipes formed so as to be able to pass water from the inside of the second water pipe to the inside of the water pipe leading to the water sampling pipe, and the closed surface of one end of the sheath pipe And may be formed so as to protrude outside the sheath tube.
Further, the distance of the gap between the water control openings may be changed by moving the sheath pipe substantially parallel to the water guide pipe.
Further, a chamfered portion may be provided on the outer periphery of the end portion on the opening side of the sheath tube.
The chamfered portion of the sheath tube may be covered with copper or gold.
Further, between gap of the system water opening may be from 1 in the range of 5 mm.
Further, the ratio of the opening area of the water control opening , the water flow area of the laminar flow part, and the water flow area of the water conduit is 1: 1.0 to 1.2: 1.0 to 3. .0 may be set.
The length of the sheath tube, said from the end of the conduit may be 1.1 to 1.3 times the length of the to the surface of the wall or fixed member of the sewage tank.

According to the present invention, by providing the water control aperture, since it is running water at the stationary portion, preventing the inflow of contaminating portions, so that contaminants do not adhere.
Also, more of that the flow of electric water pipe in laminar flow, the air inlet and discharge is eliminated.
In addition, since the second water guide pipe fixed to the fixing member is provided between the water guide pipe leading to the water sampling pipe and the sheath pipe, there is no need to provide a hole for installing the water sampling pipe in the wall of the sewage tank. A sampling pipe can be installed inside .
Moreover, since the chamfered portion is provided, the flow becomes smooth, and sludge and contaminants are difficult to adhere.

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

A first embodiment of the present invention is shown in FIG. FIG. 1 is a side sectional view of a water sampling pipe. In the figure, the water intake section 4 includes a water guide pipe 41, a sheath pipe 42, a fixing member 43, a water control opening 44, and an attachment screw 45. FIG. 2 is a partially enlarged cross-sectional view showing details of the water control opening 44.
The present invention is different from the prior art in that a sheath tube 42 and a water control opening 44 are provided.

The sheath pipe 42 is attached so as to cover the water guide pipe 41 at the water intake, and has a structure in which the width of the water control opening 44 can be adjusted by an attachment screw 45. And the distance of the water control opening 44, ie, the fixing member 43 currently fixed to the wall 1a, and the edge part of the sheath pipe 42 is set to 1-5 mm. Furthermore, the ratio of the length Ls of the sheath tube to the length Ld of the water conduit 41 is set to be 1.1 to 1.3 times. By adopting such a structure, it is possible to greatly limit the contamination that flows into the water sampling pipe.
Further, the ratio of the opening area of the water control opening 44, the water flow area of the laminar flow part 41a, and the water flow area of the water guide pipe 41 is 1: 1 so that the inside of the water guide pipe 41 has a laminar flow. 0.0 to 1.2: 1.0 to 3.0. These ratios are obtained by various experiments, and in this range, the inside of the pipe becomes a laminar flow, so that inflow and generation of gas can be prevented. However, if these ratios are out of the range, the laminar flow part 41 and the water guide pipe 41 become turbulent, or the water control opening 44 becomes closed and water intake becomes difficult.
Further, the ratio of the length Ls of the sheath tube to the length Ld of the water conduit 41 is set to be 1.1 to 1.3 times. By adopting such a structure, it is possible to greatly limit the contamination that flows into the water sampling pipe. As shown in FIG. 2, the flow of sewage is vertical in the water control opening 44, but in the laminar flow portion 41a, it changes at right angles to the horizontal direction (arrows in the figure). Since it suddenly slows, it is thought that the adhesion of impurities is less likely to occur. Further, when the length ratio is 1 or less, a necessary amount of collected water cannot be obtained, and when the length ratio is 1.3 or more, impurities are mixed into the laminar flow part 41a or clogged.

FIG. 3 is an enlarged cross-sectional view of a sheath tube 42 showing Embodiment 2 of the present invention. In the present embodiment, the chamfered portion (B portion in the figure) is provided on the opening side of the sheath tube 42 by cutting the outer corner of the end portion. The chamfered portion of the sheath tube is covered with copper or gold plating.
Since the chamfered portion is provided, the flow becomes smooth and sludge and impurities are less likely to adhere.
The difference between the present embodiment and the first embodiment is that a chamfered portion is provided.

FIG. 4 is a side cross-sectional view of a water sampling structure showing Example 3 of the present invention. In the figure, 411 is a second water conduit. In the present embodiment, a fixing member 43 in which one end of the second conduit 411 is fixed by welding is attached to the inner wall of the sewage tank, and the sheath tube 42 having a larger diameter than the second conduit 411 and closed at one end is connected to the other end. The water guide pipe 41 is inserted through an insertion hole provided at one end of the sheath pipe 42 and assembled.
The water control opening 44 is composed of the sheath tube 42 and the fixing member 43 as in the first embodiment, and the laminar flow portion is composed of the sheath tube 42 and the second water conduit.
By adopting such a structure in which the water intake is provided inside the sewage tank, it is not necessary to provide a hole for installing a water sampling pipe in the wall of the sewage tank in addition to the effects of the first embodiment, and the water sampling pipe can be installed in a short time. There is also an effect.

Side sectional view of a water sampling pipe showing Example 1 of the present invention Partially enlarged side sectional view of FIG. The expanded sectional view of the sheath pipe which shows Example 2 of this invention Side sectional view of a water sampling structure showing Example 3 of the present invention Side sectional view of a sewage tank with a conventional water sampling pipe installed Side sectional view showing a conventional water sampling pipe

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sewage tank 1a Wall 2 Water stop member 3 Water intake pipe 4 Water intake part 41 Water transfer pipe 411 Second water transfer pipe 42 Sheath pipe 43 Fixing member 44 Opening part 45 Mounting screw 46 Filter

Claims (9)

A water conduit that guides the water in the tank to the water sampling pipe;
A sheath tube having an inner diameter larger than the outer diameter of the water conduit, one end is formed to be closed, and formed to be able to accommodate a part of the water conduit from the other end side opened;
A fixing member for fixing the water conduit to the inner wall of the tank substantially perpendicularly;
A mounting screw for fixing the water conduit and the sheath tube,
A water control opening having a gap is provided between the other end of the sheath tube and the fixing member, and is substantially parallel to the overlapping portion of the inner periphery of the sheath tube and the outer periphery of the conduit tube. By providing a laminar flow part having a gap,
The water sampling structure is configured such that the water in the tank is guided to the water conduit after passing through the water control opening and the laminar flow portion.   One of the water conduits is housed inside the sheath tube, and the other of the water conduits is formed so as to penetrate the fixing member and the wall of the tank and protrude outside. The water sampling structure according to Item 1. The water conduit is composed of a water conduit that leads to the water sampling tube, and a second water conduit that has an inner diameter larger than the outer shape and that can accommodate one of the water conduits that leads to the water sampling tube, and By connecting with an attachment screw so as to have a gap substantially parallel to an overlapping portion between the inner periphery of the second conduit and the outer periphery of the conduit leading to the water sampling tube, the water in the tank is Formed to be able to pass water from the inside of the second conduit to the inside of the conduit that leads to the sampling tube, and
2. The water sampling structure according to claim 1, wherein the other of the water guide pipes leading to the water sampling pipe is formed so as to penetrate the closed surface of one end of the sheath pipe and protrude outside the sheath pipe.   The water sampling structure according to any one of claims 1 to 3, wherein a distance of the gap between the water control openings can be changed by moving the sheath pipe substantially parallel to the water guide pipe. Outer circumference of the end portion of the opening side of the front Kisayakan are those chamfered portions are provided, water sampling structure according to any one of claims 1 to 4. The chamfered portion of the front Kisayakan, those coated with copper or gold, water sampling structure according to claim 5. The gap before Symbol system water opening, is obtained from 1 in the range of 5 mm, water sampling structure according to any one of claims 1 to 6. The ratio of the opening area before Symbol system water opening, a water flow area of the laminar flow section, the water passage area of the water conduit is 1: 1.0 to 1.2: 1.0 to 3. The water sampling structure according to claim 1, wherein the water sampling structure is set to zero. The length before Kisayakan, in which the end of the conduit was 1.1 to 1.3 times the length of the to the surface of the wall or the fixing member of the sewage tank, according to claim 1 The water sampling structure according to any one of 6.

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