JP2017161015A - Fluid monitoring transparent pipe unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid monitoring transparent pipe unit capable of preventing occurrence of deformation or damage at the transparent pipe caused by extension or retraction by variation in temperature and capable of assuring a sufficient strength or durability in view of its structure.SOLUTION: There are provided a straight pipe cylindrical transparent pipe 10; a pair of flanges 20 for the transparent pipe arranged as flanges so as to be outward fitted at each of both ends of the transparent pipe 10; each of O-rings for sealing between an outer periphery of each of the end parts of the transparent pipe 10 and an inner periphery of each of a pair of flanges 20 for the transparent pipe; a pair of piping flanges 30 arranged to enable the pipings to be connected in correspondence with each of both ends of the transparent pipe 10; flange space holding and fixing means 40 having an inclusion member [a bolt 41] present between a pair of flanges 30 for the piping and fixing members [nuts 42, 43] for fixing the pair of flanges 30 for the piping and the pair of flanges 20 for the transparent pipe in regard to the inclusion member [the bolt 41] to a state in which their flanges are kept to be sealed by a packing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transparent tube unit for fluid monitoring used for monitoring the transparency of a fluid flowing in a pipe of a pipe in a device for processing fluid such as a water treatment device using filtered sand.

  Conventionally, as a water treatment apparatus using filtration sand to which a transparent pipe unit for fluid monitoring is mounted, for example, a filtration sand having a cylindrical filtration tank in which filtration sand for removing contaminated water is accumulated and stored is provided. When the adsorbing power of the filter tank decreases, the backwashing process is performed to purify the contaminated filtered sand, and the water channel for discharging the backwash water when the filtered sand is purified by the backwashing process is provided in the filter tank. Provided with the pipe inserted into the inside of the filtration tank at the top, and provided with a pipe opening having a pipe opening opened on the upper side, around the pipe opening and in the upper part of the filtration tank The present applicant has proposed a space partitioning means that partitions the upper inner peripheral space and restricts water flow (see Patent Document 1).

In this water treatment device using filtration sand, a conduit with a larger inner diameter of water flow than the preceding and succeeding conduits can be accurately detected in the middle of the drainage conduit for backwash water. And the transparent expansion pipe part provided with the transparent pipe | tube is provided (refer patent document 1). According to this transparent magnifying tube part, since the pipe is thick and the distance for transmitting light is long, the contamination of the backwash water is emphasized and the contamination state of the backwash water is accurately determined. It can be detected well.
In addition, this transparent expansion pipe part is in the form of a normal connection pipe with flanges fixed at both ends by screwing, and is composed entirely of a resin material, so that the structural strength is sufficient depending on the use conditions There was a possibility that problems such as inability to secure could occur.

Japanese Patent Laying-Open No. 2015-13222 (first page)

  The problem to be solved regarding the transparent tube unit for fluid monitoring is a configuration including a transparent tube, so it is necessary to use a transparent material such as a resin material or a glass material, but in the case of a resin material or a glass material, The strength and durability, such as deformation and breakage due to expansion and contraction (thermal expansion) due to temperature changes, or impact resistance, are often inferior to those made of metal materials.

  Therefore, an object of the present invention is to provide a transparent tube unit for fluid monitoring that can prevent the transparent tube from being deformed or damaged due to expansion and contraction due to temperature change, and can ensure sufficient structural strength and durability. There is to do.

The present invention has the following configuration in order to achieve the above object.
According to one aspect of the transparent tube unit for fluid monitoring according to the present invention, a straight tube-shaped transparent tube and a pair of transparent tubes arranged as flanges so as to be fitted around both ends of the transparent tube. A flange, each O-ring sealing between the outer periphery of each end of the transparent tube and the inner periphery of each of the pair of transparent tube flanges, and a pipe corresponding to each of both ends of the transparent tube A pair of piping flanges arranged so that they can be connected, and an interposition member interposed between the pair of piping flanges so that the interval between the pair of piping flanges is held and fixed at a required interval; And a flange interval holding fixing means including a fixing member for fixing the pair of flanges for piping and the pair of flanges for transparent pipe to the interposed member in a state sealed with packing.

Moreover, according to one form of the transparent tube unit for fluid monitoring concerning this invention, the said transparent tube can be formed with the resin material, It can be characterized by the above-mentioned.
Moreover, according to one form of the transparent tube unit for fluid monitoring concerning this invention, the said interposition member of the said flange space | interval holding | maintenance fixing means is a some volt | bolt, Comprising: The said fixing member of the said flange space | interval holding | maintenance fixing means is plural. It can be characterized by being a nut.

Moreover, according to one form of the transparent tube unit for fluid monitoring concerning this invention, piping connected to the said transparent tube can be the piping of the processing apparatus of a liquid.
Further, according to one embodiment of the transparent pipe unit for fluid monitoring according to the present invention, the pipe of the liquid processing apparatus has filtration sand that adsorbs and removes contaminants of water to be treated accumulated and stored therein. A cylindrical filtration tank is provided, and contaminated water to be treated is introduced from the upper part of the filtration tank into the filtration tank, and the water to be treated adsorbed and filtered by the filtration sand is introduced from the lower part of the filtration tank to the outside. When the filtration and purification process is performed, and when the adsorbing power of the filtration sand is reduced, the filter is contaminated by performing a backwash process using a flow upward from the lower part of the filtration tank in a direction opposite to the flow of the water to be treated. It can be characterized by being a drain pipe of a water treatment device using filtration sand which purifies the filtered sand.

  According to the transparent tube unit for fluid monitoring according to the present invention, it is possible to prevent the transparent tube from being deformed or damaged due to expansion / contraction due to a temperature change, and to ensure sufficient strength and durability structurally. There is an advantageous effect.

It is a perspective view which shows the example of the form of the transparent tube unit for fluid monitoring which concerns on this invention. It is sectional drawing of the example of a form of FIG. It is an exploded view of the example of a form of FIG. It is a front view which shows the example of a form of the water treatment apparatus using the filtration sand with which the example of FIG. 1 is mounted | worn.

  Hereinafter, an example of a transparent tube unit 1 for fluid monitoring according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 3). The transparent tube unit 1 for fluid monitoring can be connected to a pipeline because it is used for monitoring the transparency of the fluid flowing in the tube.

Reference numeral 10 denotes a straight tube-shaped transparent tube. In this embodiment, the tube 10 is formed entirely of a resin material and is provided so as to constitute a cylindrical conduit having both ends opened. More specifically, the transparent tube 10 of the present embodiment is formed of a polycarbonate pipe.
Reference numeral 20 denotes a flange for a transparent tube, and a pair is arranged as a flange so as to be fitted around each of both end portions 11 and 11 of the transparent tube 10, and in this embodiment, a versatile metal material ( For example, it is provided with standard parts of stainless steel and is formed in a circular donut shape. The transparent tube flange 20 may be made of a resin material.

  Reference numeral 15 denotes an O-ring, which is arranged to seal between the outer periphery 12 of each end 11 of the transparent tube 10 and the inner periphery 22 of each of the pair of transparent tube flanges 20 and 20. The O-ring 15 of this embodiment is fitted and held in a ring-shaped groove 13 formed on the outer diameter (outer periphery 12) of each end portion 11 of the transparent tube 10, and the inner diameter (inner periphery of the transparent tube flange 20). 22) is slidably contacted and inserted to seal between the transparent tube 10 and the transparent tube flange 20.

  30 is a flange for piping, and a pair is arranged so that piping can be connected corresponding to each of the both ends of the transparent tube 10. In this embodiment, it is constituted by a standard part (for example, stainless steel) of a general metal material. Further, the inner diameter (inner circumference 22) of the pipe flange 30 is a female thread portion 31 for pipe connection so that the pipe is attached by screw connection.

  Reference numeral 40 denotes a flange interval holding and fixing means, and an intervening member interposed between the pair of piping flanges 30 and 30 so that the interval between the pair of piping flanges 30 and 30 is held and fixed at a predetermined interval. , And a pair of piping flanges 30 and 30 and a pair of transparent tube flanges 20 and 20 with respect to the interposition member.

  According to this, in this embodiment, the transparent tube 10 is made of a resin material. However, the transparent tube 10 is composed of a pair of flanges 30 and 30 for piping and a flange interval holding and fixing means 40 made of a metal material. The transparent tube unit 1 for fluid monitoring can be provided with sufficient strength, and deformation and breakage of the transparent tube 10 can be prevented. In particular, even if the transparent tube 10 expands due to thermal expansion due to temperature changes, both ends 11 and 11 of the transparent tube 10 are merely fixed to the pair of transparent tube flanges 20 and 20 and are not fixed. The force can be released, and problems such as sealing failure and breakage due to deformation of the transparent tube 10 can be prevented. That is, according to the transparent tube unit 1 for fluid monitoring according to the present invention, the transparent tube 10 can be prevented from being deformed or damaged, and structurally sufficient strength and durability can be secured.

In this embodiment, as shown in FIG. 2, the length of the transparent tube 10 is set so as not to protrude from both ends of the pair of transparent tube flanges 20 and 20 including the case where the transparent tube 10 is extended by thermal expansion. ing. According to this, it can be effectively adapted and used for applications in which the transparent tube 10 expands and contracts due to a large temperature change such as a device that handles hot water.
Further, the workability of assembly in which both end portions 11 and 11 of the transparent tube 10 are fitted into the pair of transparent tube flanges 20 and 20 and sealed by the O-ring 15 is compared with the seal by screwing or fixing by welding. It can be performed very easily and workability can be improved.

  In the flange interval holding and fixing means 40 according to this embodiment, the interposed member is constituted by a plurality of bolts 41, and the fixing member is constituted by a plurality of nuts (nuts 42, cap nuts 43). The nuts 42 arranged on the inner side to define the distance between the pair of transparent tube flanges 20 and 20 are screwed so as to become double nuts 42 and 42 for each bolt 41, thereby improving the locking prevention and positioning accuracy. There is an effect to make. Reference numeral 44 denotes a washer, which constitutes a fastening means together with the bolt 41, the nut 42, and the cap nut 43. Since these members can use general-purpose parts, they can be configured easily and at low cost.

In this embodiment, four bolts 41 are connected to a pair of transparent tube flanges 20, 20 through bolt insertion holes 23, a packing 25 bolt insertion hole 25 a, and a pair of piping flanges 30, 30 bolt insertion holes 32. It is configured to be inserted and fixed to. The positions of the bolt insertion holes 23, 25a, 32 are provided at positions where the circles are equally divided in the flanges 20, 30 and the packing 25, so that a field of view for visually recognizing the transparent tube 10 can be suitably secured. The bolt 41 is located.
The number of bolts 41 is not particularly limited as long as it is a plurality, but considering the sealing property, when the diameter of the transparent tube 10 is increased, the number of bolts 41 may be increased.

  Further, the flange interval holding and fixing means 40 according to the present invention is not limited to this embodiment. For example, male screw portions are provided at both ends, and diameter-expanded ring-shaped step portions are provided in the middle of both sides. A bolt may be provided. According to this, the stepped portion in the form of an enlarged ring serves as a stopper for restricting the inward movement to position the pair of transparent tube flanges 20 and 20 at a required interval, and the nuts 42 ( In the present embodiment, the double nuts 42 and 42) are not necessary, so that the double nuts 42 and 42 need not be positioned or tightened, and can be assembled more easily.

In this embodiment, the pipe communicated with the transparent pipe 10 is a pipe of a liquid treatment apparatus, and more specifically, a drain pipe of a water treatment apparatus using filter sand. According to this, the transparency etc. of the to-be-processed water (drainage at the time of backwashing, etc.) of the water treatment apparatus using filter sand can be monitored appropriately.
In addition, the transparent tube unit 1 for fluid monitoring according to the present invention is not limited to being connected to a pipe of a device for handling liquid typified by such water treatment, and handles a gas such as air. It can be used by being connected to the piping of the apparatus. That is, the transparent tube unit 1 for fluid monitoring according to the present invention has a configuration that can be widely used for monitoring the flow of fluid that is a fluid material.

  Next, a detailed description will be given of an embodiment of a water treatment apparatus using filtration sand to which the transparent pipe unit 1 for fluid monitoring according to the present invention is attached, based on the attached drawing (FIG. 4). The water treatment apparatus using the filtration sand includes a cylindrical filtration tank 50 in which filtration sand that adsorbs and removes contaminants of water to be treated is accumulated and stored. This embodiment is an example of a water treatment device for circulating and using hot water cleaning water mixed with a cleaning liquid. In this embodiment, the temperature of the hot water is set to about 70 ° C.

  According to the water treatment device using the filter sand, contaminated water to be treated is introduced from the upper part of the filtration tank 50 into the filtration tank 50, and the water to be treated (purified) that has been adsorbed and filtered by the filter sand. When the filtration purification process is performed to discharge the treated water) from the lower part of the filtration tank 50 to the outside, when the adsorption power of the filtration sand is reduced, the flow from the lower part of the filtration tank 50 to the upper direction is opposite to the flow of the water to be treated. The contaminated filter sand is purified by performing a backwashing process.

  The filtration tank 50 of this embodiment is formed in a cylindrical shape. In the filtration purification process, the water to be treated supplied from above passes through the filtration sand and passes through the lower part of the filtration tank 50 through the supporting gravel and the strainer. It comes to be discharged from the water part. In addition, although a strainer does not let filtration sand and support gravel pass, it has a structure which can pass to-be-processed water (purified treated water) and backwash water with a small water resistance. Further, the upper end surface of the filtration tank 50 is closed by the upper end lid 51 of the filtration tank, and a pressure gauge and an automatic air vent valve are mounted on the upper end cover 51 of the filtration tank.

  In the water treatment apparatus using the filtration sand, the raw water supply pipe 60 connected to supply the water to be treated to the upper part of the filtration tank 50, the drain pipe 70 for discharging backwash water, the raw water supply pipe 60, A switching valve 61 for opening and closing the drain pipe 70 and the like is provided. Note that the pipes 60 and 70 of this embodiment can be made of stainless steel.

  In this embodiment, the transparent pipe unit 1 for fluid monitoring according to the present invention is connected to the middle part of the drain pipe 70 for backwash water so that the contamination state of the backwash water can be detected with high accuracy. Yes. According to the transparent tube unit 1 for fluid monitoring, the situation of the backwashing process can be appropriately visually observed. In addition, if an optical sensor is attached to the transparent tube 10 of the transparent tube unit 1 for fluid monitoring, monitoring of the backwashing process status can be automated, and the backwashing process can be completed at an optimal timing. It can be managed accurately.

  As described above, the present invention has been variously described with reference to preferred embodiments. However, the present invention is not limited to the above embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

DESCRIPTION OF SYMBOLS 1 Transparent pipe unit for fluid monitoring 10 Transparent pipe 11 End part 12 Outer circumference 13 Ring-shaped groove 15 O-ring 20 Transparent pipe flange 22 Inner circumference 23 Bolt insertion hole 25 Packing 25a Bolt insertion hole 30 Piping flange 31 For pipe connection Female thread portion 32 Bolt insertion hole 40 Flange interval holding and fixing means 41 Bolt 42 Nut 43 Cap nut 44 Washer 50 Filtration tank 51 Filtration tank upper end cover 60 Raw water supply pipe 61 Switching valve 70 Drainage pipe

Claims (5)

A straight tube-shaped transparent tube,
A pair of flanges for transparent tubes arranged as flanges so as to be fitted on both ends of the transparent tube;
Each O-ring sealing between the outer periphery of each end of the transparent tube and the inner periphery of each of the pair of transparent tube flanges;
A pair of piping flanges arranged so as to be able to connect piping corresponding to each of both ends of the transparent tube;
An interposition member interposed between the pair of pipe flanges, and the pair of pipe flanges with respect to the interposition member, such that the gap between the pair of pipe flanges is held and fixed at a predetermined interval; A transparent tube unit for fluid monitoring, comprising: a flange interval holding and fixing unit including a fixing member for fixing the pair of transparent tube flanges in a state sealed with packing.   2. The fluid monitoring transparent tube unit according to claim 1, wherein the transparent tube is formed of a resin material.   3. The fluid monitoring device according to claim 1, wherein the interposition member of the flange interval holding and fixing unit is a plurality of bolts, and the fixing member of the flange interval holding and fixing unit is a plurality of nuts. Transparent tube unit.   4. The transparent tube unit for fluid monitoring according to claim 1, wherein the pipe communicated with the transparent pipe is a pipe of a liquid processing apparatus.   The pipe of the liquid treatment apparatus includes a cylindrical filtration tank in which filtration sand that adsorbs and removes contaminants of the water to be treated is accumulated and stored therein, and the contaminated water to be treated is disposed above the filtration tank. Is introduced into the inside of the filtration tank, and a filtration purification step is performed to discharge the treated water adsorbed and filtered by the filtration sand from the lower part of the filtration tank to the outside, and when the adsorption power of the filtration sand is reduced, It is a drain pipe of a water treatment device using filtration sand that purifies contaminated filtration sand by performing a backwashing process by a flow upward from the lower part of the filtration tank in a direction opposite to the flow of the water to be treated. The transparent tube unit for fluid monitoring according to claim 4.

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