JP2006320317A - Filtering device for liquid spray system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filtering device that surely catches foreign matters such as sand, mud, etc., contained in a liquid for liquid spray and hardly causes filter clogging by these foreign matters and a liquid spray system equipped with the filtering device. <P>SOLUTION: The liquid spray system is equipped with the filtering device 10 in the middle of a water supply flow channel. The filtering device 10 has a water inlet chamber 12 into which agricultural water drawn up from a well or a river flows and a filter 30 is attached to the upper end of the water inlet chamber. The filter 30 is obtained by knitting warps and wefts composed of filaments to give a cloth and sewing the cloth into a bag-like form and covers the opening of the upper end of the water inlet chamber 12. Since the filter 30 is composed of a cloth made by knitting filaments, the filter hardly causes clogging by foreign matters such as sand, mud, etc., contained in agricultural water. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a filtration device employed in a spill system.

  Conventionally, in the cultivation of crops such as vegetables and fruits, liquids such as liquid tubes and sprinklers as disclosed in Patent Document 1 and Patent Document 2 below were laid on farmland and pumped from rivers and wells. A soaking system for soaking water or the like is employed. The tube for liquid smoke like patent documents 1 and 2 below is a long tubular body, in which a large number of small holes are perforated.

JP-A-9-252670 JP 2000-176319 A

  As described above, the liquid-discharging tube as disclosed in Patent Documents 1 and 2 is provided with a small hole. In addition, soot liquids such as sprinklers are often provided with small holes for spraying the liquid. For this reason, if foreign matter such as sand or mud is mixed in the liquid supplied to the liquid such as a liquid tube, these foreign substances are clogged in the small holes for liquid and cannot be successfully liquidated. End up. Therefore, it is desirable that the liquid to be supplied to the liquid crystal tube is not mixed with foreign substances such as sand and mud that block the small holes for liquid liquid.

  However, water drawn from wells and rivers excavated for irrigation often contains foreign substances such as sand and mud. For this reason, in the conventional liquid spill system, a filtration device including a filter capable of trapping foreign matters such as sand is disposed between a pump for pumping the liquid and a liquid spill such as a liquid sap tube.

  Many of the filtration devices employed in the prior art are formed by bundling a large number of fibers in order to remove fine sand or the like that closes the small holes of the dripping liquid such as the dripping tube from the liquid. It uses a filter that weaves what is called a multifilament. Therefore, in the conventional dripping system, the small holes of the dripping liquid are not easily blocked by foreign matters such as sand contained in the liquid, and can be suitably drowned in farmland.

  As described above, in the prior art liquid spill system, foreign matter is captured by a filtration device including a filter using a multifilament in which a large number of fibers are bundled. For this reason, in the filtration apparatus employed in the prior art, foreign substances can be accurately captured, but foreign substances such as sand and mud enter between the multifilament fibers constituting the filter, thereby clogging. There was a problem that it was easy to wake up.

  Further, since this type of filter is further knitted with a combination of many fibers, it is difficult to remove the foreign matter once the foreign matter has entered between the fibers. Therefore, in the prior art, there has been a problem that maintenance such as cleaning and replacement of the filter must be frequently performed.

  In view of the above-described problems, the present invention can reliably capture foreign substances such as sand and mud contained in the liquid for liquid filtration, and can be used for a filtration apparatus for a liquid filtration system in which filter clogging due to these foreign substances hardly occurs. For the purpose of provision.

  Accordingly, the invention according to claim 1 provided to solve the above-mentioned problem is a filtration device for a spill system for filtering a liquid to be supplied to a dispersed liquid used in the sap, which is externally provided. A treatment liquid inflow portion into which the liquid flows, a filtering means for blocking foreign substances contained in the liquid that has flowed into the treatment liquid inflow portion, and a feed for sending the liquid that has passed through the filtration means toward the soot liquid. A filtration device for a spill system, wherein the filtration means is constituted by a single fiber.

  The filtration means employed in the filtration device for a phlegm system of the present invention is composed of a single fiber. Therefore, in the filtration device of the present invention, foreign matter does not enter between the fibers. More specifically, when a filtering means constituted by what is called a multifilament in which a large number of fibers are bundled as in a conventional filtering device is adopted, foreign matter forms a multifilament with each other. It will not be able to come in between and become clogged. On the other hand, since the filtration means employed in the filtration device of the present invention is composed of single fibers, there is no room for foreign matter to enter the fibers. Therefore, in the filtration device of the present invention, foreign matter does not accumulate in the fibers, and the filtration means is not easily clogged. Therefore, according to the present invention, the maintenance frequency of the filtration device for the liquid smoke system can be significantly reduced.

  In addition, as described above, in the filtration device for a phlegm system according to the present invention, the filtration means is constituted by a single fiber, so that even if the filtration means is clogged with sand or other foreign matter, it is easy to see. Clogging can be eliminated. Therefore, the filtration device for a phlegm system of the present invention is easy to maintain.

  The filtration device for a phlegm system of the present invention can easily eliminate clogging of the filtration means, and therefore, the filtration means can be reused many times if maintenance is performed. Therefore, according to the filtration device for a phlegm system of the present invention, the replacement frequency of the filtration means can be reduced and the running cost can be suppressed.

  According to a second aspect of the present invention, the treatment liquid inflow portion is constituted by a cylindrical body into which a liquid can be introduced from the outside, and the outlet for discharging the liquid to the downstream side in the flow direction of the liquid flowing into the cylindrical body And the filtering means filters the liquid flowing out from the outlet, and foreign matter blocked by the filtering means is accumulated upstream of the outlet in the flow direction of the liquid flowing into the cylinder. 2. The filtration device for a septic system according to claim 1, wherein a collecting portion is provided, and a foreign matter discharge port for discharging foreign matter is provided in the collecting portion.

  According to such a configuration, the foreign matter separated from the liquid by the filtering means can be easily removed from the processing liquid inflow portion.

  Invention of Claim 3 is comprised by the cylindrical body which can introduce | transduce a liquid from the outside in the process liquid inflow part, and has an outflow port which flows out the liquid introduce | transduced into the cylindrical body in the upper end side, The filtering means is mounted so as to cover the outlet on the upper end side of the processing liquid inflow portion, and filters out the liquid flowing out from the outlet, and the passage at the lower end side of the processing liquid inflow portion is blocked by the filtering means. 2. The filtration device for a phlegm system according to claim 1, wherein a collecting part for collecting foreign substances is provided, and a foreign substance discharge port for discharging foreign substances is provided in the collecting part. is there.

  As described above, in the filtration device for a phlegm system of the present invention, foreign matter hardly enters the mesh of the filtration means. Since the filtration device for a phlegm system of the present invention is mounted so as to cover the filtration means on the outlet formed on the upper end side of the treatment liquid inflow portion, when the water entering the treatment liquid inflow portion stops, The foreign matter separated from the liquid by the filtering means settles and accumulates in the accumulation portion provided on the lower end side of the treatment liquid inflow portion. Therefore, the filtration device for a phlegm system of the present invention can take out the foreign matter separated by the filtration means through the foreign matter discharge port, and can maintain the filtration means much more easily than the conventional filtration device. .

  The invention according to claim 4 is characterized in that a skeleton structure portion is provided on the downstream side in the flow direction of the liquid flowing inside the cylindrical body, and a filtering means is mounted on the skeleton structure portion. It is a filtration apparatus for the dripping system of Claim 2 or 3.

  Since the filtration device for the phlegm system of the present invention has a skeleton structure part for mounting the filtration means, the filtration means is maintained in a stretched state even when the liquid passage is stopped after completion of the filtration operation. . Therefore, in the filtering device of the present invention, when water flow stops when the filtration is completed, foreign matters such as sand and mud captured by the filtering means are smoothly peeled off from the filtering means. Therefore, the filtering device of the present invention is less likely to clog the filtering means.

  Further, in the filtration device for a dripping system according to any one of claims 1 to 4, a protective member is provided on the outside of the filtration means, and the filtration means is provided from the inside to the outside of the treatment liquid inflow portion. It is desirable that a part or all of the filtering means stick to the inner wall surface of the protective member when the liquid flows out in the direction of the heading.

  According to such a configuration, it is possible to relieve the pressure acting on the filtering means when the liquid passes, and to suppress the deterioration of the filtering means to a minimum.

  The invention described in claim 6 is characterized in that spraying means capable of spraying liquid in the direction from the outside to the inside of the treatment liquid inflow portion with respect to the filtering means is provided. It is a filtration apparatus for the phlegm system described in the above.

  The filtration device for a slag system of the present invention can spray liquid in the direction from the outside to the inside of the treatment liquid inflow portion with respect to the filtration means, that is, in the direction opposite to the liquid flow direction generated during the liquid filtration operation. It has a spraying means. Therefore, the filtering device of the present invention drops sand and mud adhering to the filtering means by the jet generated by operating the spraying means, even if the filtering means is clogged by filtration operation, The clogging of the filtering means can be eliminated.

  The invention described in claim 7 has a purifying liquid inflow part inside the processing liquid inflow part, and a filtering means is mounted on the outside of the purifying liquid inflow part to treat the liquid flowing into the processing liquid inflow part. The liquid can be filtered by passing the filtering means from the liquid inflow portion side and flowing into the purification liquid inflow portion side, and the liquid flowing into the processing liquid inflow portion is arranged outside the purification liquid inflow portion. 2. The filtration device for a spill system according to claim 1, further comprising a swirl flow generating unit capable of forming a swirl flow flowing along the filtering unit.

  The filtration device of the present invention has a swirl flow generator and can make the liquid flowing into the treatment liquid inflow portion from the outside into a swirl flow that flows along the filtration means, and the liquid is filtered substantially uniformly in the entire filtration means. can do. Therefore, in the filtration device of the present invention, there is a low possibility that the liquid flowing in from outside flows intensively to a part of the filtering means, or foreign substances such as sand and mud concentrate on a part of the filtering means. Therefore, according to the filtering device of the present invention, agricultural water can be filtered substantially uniformly by the entire filtering means, and the entire filtering means can be effectively used for liquid filtration. In addition, according to the filtration device of the present invention, foreign matters such as sand and mud are not concentrated on a part, so that the frequency of maintenance such as cleaning and replacement of the filtration means can be minimized.

  Further, in the filtration device for a septic system according to the seventh aspect, the purification liquid inflow portion is cylindrical and has a large number of openings on the outer periphery, and the size of the openings is included in the liquid. It may be the size which can prevent the passage of a foreign object existing (claim 8).

  In the filtration device of the present invention, the purification liquid inflow portion is provided with a large number of openings on the outer periphery with a size capable of preventing the passage of foreign matters, so that the purification liquid inflow portion itself serves as a filter for removing foreign matters. The function of can be demonstrated. That is, the filtering device of the present invention functions as a filter in addition to the filtering means arranged outside the purifying liquid inflow portion as well as the purifying liquid inflow portion. Therefore, according to this invention, the foreign material contained in the liquid can be caught still more reliably, and the filtration apparatus excellent in the filtration capability can be provided.

  Further, in the filtration device of the present invention, since the filtering means is mounted outside the purification liquid inflow portion, it is assumed that a very small amount of foreign matter passes through the filtration means and is captured in the purification liquid inflow portion. . That is, in the filtering device of the present invention, most of the foreign matter contained in the liquid is captured by the filtering means that can remove the captured foreign matter relatively easily. There is a low possibility that the purified liquid inflow portion will be clogged by biting. Therefore, according to the present invention, it is possible to minimize the frequency of maintenance related to the purified liquid inflow portion, such as cleaning and replacement of the purified liquid inflow portion.

  The invention according to claim 9 is characterized in that the filtering means is knitted so that the warp and the weft composed of single fibers are slidable with respect to each other. It is a filtration apparatus for the described liquid-smoke system.

  In the filtration device for a phlegm system of the present invention, the filtering means employs a knitted warp and weft composed of single fibers, but the warp and weft are slidable with each other. Even if foreign matter such as sand or mud is caught in the mesh formed by warp and weft, it will easily fall off. Therefore, the filtration device of the present invention is less likely to cause clogging of the filtering means and a reduction in filtration capacity due to clogging.

  10. The filtration device for a phlegm system according to any one of claims 1 to 9, wherein the filtration means has a mesh shape in which warp yarns and weft yarns composed of single fibers intersect, and the mesh opening is 50 μm or more and 100 μm. It is desirable that (Claim 10)

  The filtration device according to any one of claims 1 to 10 includes a soot liquid capable of pouring liquid from a small hole for soot, and the filtration device is located upstream of the soot liquid in the liquid flow direction. It can be used in a liquid-liquid system characterized by being arranged.

  In the soot liquid system having such a configuration, the liquid from which foreign matters such as sand and mud have been removed by the filtration device according to any of the above claims is supplied to the soot liquid such as the soot tube. Clogging of small holes for liquid does not occur. Therefore, according to the dripping system having the above-described configuration, the dripping liquid can be uniformly drowned on the farmland where the dripping liquid is installed.

  In addition, when the filtration device according to any one of claims 1 to 10 is employed in the phlegm system, the filtration means has a mesh shape in which warp yarns and weft yarns constituted by single fibers intersect, and the filtration device It is desirable that the size of the opening of the means is smaller than the opening diameter of the small hole for liquid smoke. According to such a configuration, it is possible to reliably prevent foreign substances such as sand and mud from flowing into the soot liquid such as the soot tube and the sprinkler, which cause clogging of the small holes for soot.

  ADVANTAGE OF THE INVENTION According to this invention, the filtration apparatus for the dripping system which can suppress clogging of a filtration means to the minimum and can maintain easily can be provided.

  Next, the liquid smoke system and the filtration device according to an embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a liquid smelting system according to this embodiment. The drowning system 1 is roughly divided into an irrigation channel 2 for irrigating the farmland F, a water supply channel 3 for pumping water from a water source such as a river or an agricultural well and supplying the irrigation channel 2 with water. It is composed of

  As shown in FIG. 1, the irrigation flow path 2 is composed of a plurality of liquid-fed tubes 5 arranged on the farmland F. For example, a tube represented by the trade name “Sumisan Sui R Open Space Wide” manufactured by Sumika Agricultural Materials Co., Ltd. is used as the liquid smoke tube 5. The liquid smoke tube 5 has a structure in which small holes 8 are provided at predetermined intervals in the longitudinal direction. Agricultural water flowing through the inside of the liquid smoke tube 5 is discharged from the small holes 8 to the farmland F.

  The water supply flow path 3 is a flow path for supplying agricultural water pumped up from an agricultural well excavated at a position adjacent to the farmland F to each of the liquid smoke tubes 5 through the distribution pipe 6. In the middle of the water supply flow path 3, a pump 9 and a filtration device 10 are provided.

  The filtration device 10 functions as a trap that captures foreign matters such as sand and mud contained in agricultural water flowing through the water supply flow path 3. As shown in FIGS. 3 and 4, the filtration device 10 has a water inlet chamber (treatment liquid inflow portion) 12 formed by a cylindrical body 23 disposed inside the capsule-shaped main body 11, and the upper side of the water inlet chamber 12. The filter 30 is attached to the opening. As shown in FIG. 2 and FIG. 3, the main body 11 is composed of a lower main body 13 and an upper main body 15 and can be divided into upper and lower parts. The cylindrical body 23 constituting the water inlet chamber 12 penetrates the substantially central portion of the lower main body portion 13 vertically.

  The lower main body 13 is a bowl-shaped member having an upper end opened as shown in FIGS. 2 and 3. The lower main body 13 has a flange 16 extending radially outward on the upper end side, and a water outlet 17 is provided on the side. The water outlet 17 communicates with the internal space of the lower main body 13, and is used to feed agricultural water in the purified water inflow chamber 36, which will be described later, toward the dripping tube 5. It is connected to the. The lower main body 13 can be installed on the ground in a posture in which the upper end side is directed upward by a leg member 14 provided on the outer periphery.

  The cylindrical body 23 constituting the water inlet chamber 12 protrudes downward from a substantially central portion of the bottom surface of the lower main body 13 and is fixed so as to be watertight with respect to the lower main body 13. The cylindrical body 23 is a cylindrical body that is open at the upper end side and closed at the lower end side. In the cylindrical body 23, a water inlet 18 for introducing agricultural water from an external water source is provided on the side of a portion protruding downward from the bottom surface of the lower main body portion 13. That is, the filtration device 10 is connected to the water supply flow path 3 through the water inlet 18. Moreover, the site | part of the obstruction | occlusion part vicinity of the lower end side of the cylinder 23 functions as the accumulation | storage part 19 in which foreign materials, such as sand and mud which did not pass the filter 30 mentioned later accumulate. A discharge portion 20 for discharging sand, mud and the like accumulated in the accumulation portion 19 is provided at a substantially central portion on the lower end side of the cylindrical body 23. Although the discharge unit 20 is normally closed by the lid 20a, the lid 20a can be removed as necessary, and foreign matter such as sand and mud collected in the accumulation unit 19 can be discharged.

  A filter support (skeleton structure portion) 21 is fixed to the opening portion on the upper end side of the cylindrical body 23 constituting the water inlet chamber 12 according to the shape of the filter 30. In this embodiment, the filter support 21 is a skeletal structure configured by combining two support members 22 such as reinforcing bars and pipes bent in a substantially “U” shape, as shown in FIGS. 2 and 3. ing. The support member 22 includes extending portions 22 a and 22 a that extend in the axial direction of the cylindrical body 23, and a transverse portion 22 b that crosses the opening portion of the cylindrical body 23. In the support members 22 and 22, end portions of the extending portions 22 a and 22 a are fixed to the upper end portion of the cylindrical body 23 constituting the water inlet chamber 12, and the transverse portions 22 b and 22 b are substantially orthogonal to each other.

  A filter 30 is attached to the filter support 21 so as to cover the opening on the upper end side of the water inlet chamber 12 as shown in FIGS. As shown in FIG. 5 (b), the filter 30 has a cloth 31 formed by knitting warps 31a and wefts 31b composed of single fibers in a double bag shape as shown in FIG. 5 (c). It is what was sewn.

  More specifically, the filter 30 is obtained by sewing a double pile of cloths 31 formed by knitting single-fiber synthetic fibers into a bag shape. The fibers of the cloth 31 constituting the filter 30 can be made of, for example, a polyamide-based polymer compound such as nylon, a polyvinyl alcohol-based synthetic fiber such as polyester, polyethylene, polypropylene, and vinylon. The cloth 31 may be one selected from the above-described synthetic fibers and knitted, or may be one selected from two or more synthetic fibers and knitted. In consideration of ease of sewing and high tensile strength, it is desirable that the cloth 31 is made of a single fiber made of polyethylene.

  The cloth 31 can be composed of a nonwoven fabric or a woven fabric sheet. When the cloth 31 is made of a woven fabric, the intersecting portion 31c between the warp 31a and the weft 31b may be fixed by a technique such as adhesion, but it is more preferable that the intersecting portion 31c is not fixed. If the warp 31a and the weft 31b are not fixed at the intersecting portion 31c, even if a foreign matter such as sand or mud is caught in the mesh formed by the warp 31a and the weft 31b, the foreign matter easily falls off. Moreover, since the cloth 31 is shaken by the passage of agricultural water, the foreign matter captured on the surface of the cloth 31 is easily shaken off. Therefore, the filter 30 is unlikely to be clogged or to reduce the filtering ability.

  The cloth 31 constituting the filter 30 preferably has an opening of 50 [μm] or more and 200 [μm] or less, and more preferably 50 [μm] or more and 100 [μm] or less. The opening of the cloth 31 can be adjusted as appropriate according to the quality of agricultural water supplied from a water supply source such as a well, and the particle size of foreign matter typified by sand or mud flowing in the agricultural water. it can.

  The filter 30 is sewn in a bag shape having a size covering the filter support 21. The open end of the filter 30 is firmly fixed to the upper end portion of the cylindrical body 23 by a belt-like fixture 32 as shown in FIG. As a result, the filter 30 spreads along the support member 22 of the filter support 21 and is stretched.

  The upper main body 15 is a substantially cylindrical member whose upper end is closed and whose lower end is opened, as shown in FIGS. The upper main body 15 has a flange 35 on the lower end side. As shown in FIG. 3, the upper main body portion 15 is mounted so as to cover the upper portion of the lower main body portion 13 by abutting the flange 35 with the flange 16 of the lower main body portion 13 and screwing them together. A water inflow chamber 36 is formed. The purified water inflow chamber 36 communicates with the outside through the water outlet 17 provided on the side of the lower main body 13. In addition, a buffer device 37 (pressure regulating valve) for buffering the internal pressure in the purified water inflow chamber 36 is attached to the top of the upper main body portion 15.

  Then, operation | movement of the liquid-salt system 1 of this embodiment is demonstrated centering on operation | movement of the filtration apparatus 10. FIG. The liquid smoke system 1 starts operation by starting a pump 9 provided in the middle of the water supply flow path 3. When the pump 9 is activated, agricultural water existing in an agricultural well or river (not shown) is pumped into the water supply channel 3. Agricultural water flows from the water inlet 18 into the water inlet chamber 12 of the filtration device 10 provided on the upstream side of the water supply channel 3.

  Agricultural water that has flowed into the water inlet chamber 12 passes through the filter 30 mounted on the upper end side of the cylindrical body 23, that is, downstream in the flow direction of the agricultural water that has flowed into the water inlet chamber 12, and flows into the purified water inflow chamber 36. To do. At this time, foreign substances such as sand and mud mixed in the agricultural water are captured by the filter 30. Therefore, the agricultural water that has flowed into the purified water inflow chamber 36 is hardly mixed with foreign matters such as sand and mud.

  The clean agricultural water that has flowed into the purified water inflow chamber 36 is sent further downstream through the water supply flow path 3 connected to the outlet 17 and flows into each of the liquid smoke tubes 5 connected to the distribution pipe 6. . When agricultural water flows into the smoky tube 5, the smoky tube 5 that was flat as shown in FIG. 2 (a) expands as shown in FIG. 2 (b), and the inside becomes high pressure. Therefore, agricultural water flowing through the liquid smoke tube 5 is ejected from the small hole 8.

  When the drowning to the farmland F is completed as described above, the pump 9 is stopped and the internal pressure of the filtration device 10 is reduced. Here, as described above, the filter 30 is formed by the cloth 31 in which the warp 31a and the weft 31b made of single fibers are knitted, and the warp 31a and the weft 31b can freely slide. For this reason, even if foreign matter such as sand or mud is caught in the mesh of the cloth 31, the foreign substance easily falls off the cloth 31. Furthermore, in the filtration device 10 of the present embodiment, when agricultural water passes through the filter 30, the filter 30 is swung, and thereby foreign matter is shaken off. Therefore, when the pump 9 is stopped, foreign matters such as sand and mud adhering to the filter 30 due to the water pressure during the dripping to the farmland F are located on the lower end side of the cylindrical body 23, that is, upstream of the agricultural water flow in the water inlet chamber 12. It settles in the accumulation part 19 located on the side. When the lid 20a of the discharge part 20 is opened after the pump 9 is stopped, the foreign matter settled in the accumulation part 19 is discharged together with the agricultural water remaining in the cylindrical body 23.

  As described above, in the liquid-salt system 1 of the present embodiment, the agricultural water pumped up from the water supply source is filtered by the filtration device 10 provided in the middle of the water supply flow path 3 and supplied to the liquid-living tube 5. For this reason, there is almost no defect in the liquid due to the foreign matter such as sand or mud blocking the small holes 8 of the liquid-liquid tube 5.

  Moreover, since the filtration apparatus 10 employ | adopted in the said embodiment employ | adopts the filter 30 comprised using the cloth 31 consisting of a single fiber as a raw material, even if it does not perform maintenance, such as cleaning very frequently, sand or Mud is difficult to accumulate on the filter 30. Furthermore, the filter 30 is a so-called multifilament formed by bundling a large number of fibers even if clogging occurs even if clogging occurs, because the warp 31a and the weft 31b made of single fibers are knitted. Foreign matter can be easily removed as compared with the case where a filter constituted by things is employed. In addition to this, in the filtering device 10, when agricultural water passes through the filter 30, the filter 30 swings and foreign matter is shaken off. Furthermore, since the warp 31a and the weft 31b can freely slide, the cloth 31 constituting the filter 30 easily falls off the cloth 31 even if a foreign matter is caught in the mesh of the cloth 31. Therefore, the filter 30 is not easily clogged. Therefore, the filtration device 10 does not require time and labor for maintenance of the filter 30.

  As described above, the filter 30 can easily remove foreign substances such as sand and mud, and therefore can be used repeatedly for many years. Therefore, the filtration device 10 and the liquid smelting system 1 that employs the filtration device 10 can reduce the replacement frequency of the filter 30 and can reduce the running cost accordingly.

  Further, in the filtering device 10, an opening (outlet) through which agricultural water can flow out to the purified water inflow chamber 36 side is formed on the upper end side of the cylindrical body 23 constituting the water entering chamber 12. It is mounted so as to cover the opening on the upper end side. Therefore, when the pump 9 is stopped and the filtration operation of agricultural water is completed, foreign matter such as sand and mud settles in the accumulation portion 19 provided on the lower end side of the water inlet chamber 12, and the lid 20a of the discharge portion 20 is opened. Thus, foreign matter can be discharged to the outside of the filtration device 10. Therefore, the filtration device 10 can take out the foreign matter captured by the filter 30 without disassembling the main body 11 and can perform maintenance much more easily.

  The filtering device 10 is configured to attach the filter 30 to the filter support 21 provided on the upper end side of the cylindrical water inlet chamber 12, and the cloth 31 constituting the filter 30 is stretched. Therefore, even if water flow stops after the filtration operation is completed, the filter device 10 maintains the filter 30 in a stretched state, and the filters 30 do not overlap each other. Therefore, when the water flow is stopped when the filtration is completed, the filtering device 10 smoothly removes foreign matters such as sand and mud trapped by the filter 30 and settles down.

  As described above, the filter 30 employed in the filtration device 10 is less likely to be clogged with sand or mud contained in agricultural water. However, the agricultural water may contain iron dissolved in the agricultural water, scales, organic microorganisms, etc. in addition to foreign matters such as sand and mud. When such an agricultural water is used for a long period of time, the iron or scale dissolved in the agricultural water is deposited on the filter, or the iron oxide formed by oxidizing the iron in the agricultural water or organic Slime generated by microorganisms may form a film and clog the filter 30.

  When such a situation is assumed, it is desirable to provide the upper main body 15 with a spraying means such as a shower that can spray the filter 30. In the case of such a configuration, for example, a spraying means 41 as shown in FIGS. 6 and 7 can be employed. More specifically, when the spraying means 41 is provided in the filtering device 10, a spray water inlet 45 is provided at the top of the upper main body 15. A branch pipe 43b that is branched in the middle of the water inlet pipe 43a for introducing agricultural water into the water inlet chamber 12 is connected to the water inlet 45 for spraying.

  A shower head 50 is connected to the end portion (downstream end side) of the branch pipe 43b. A filtration device 47 and a spray valve 48 are provided in the middle of the branch pipe 43b. The filtration device 47 is for filtering agricultural water that goes to the shower head 50. The shower head 50 is installed on the inner side of the upper main body 15, and is for ejecting water toward the filter 30.

  A water inlet valve 49 is provided in the middle of the water inlet pipe 43a and at a position downstream of the branching portion with the branch pipe 43b in the flow direction of agricultural water (on the main body 11 side). Therefore, when the pump 9 is started with the water inlet valve 49 closed and the spray valve 48 opened to pump up agricultural water from a water supply source such as a well, the agricultural water flows through the branch pipe 43b and reaches the shower head 50. It is sprayed on the filter 30 installed in the part 11. As a result, foreign matters such as sand and mud adhering to the filter 30 and foreign matters such as iron, scale, iron oxide, and slime generated by organic microorganisms are washed away, and the filter 30 gradually becomes clean.

  When the filter 30 is washed as described above, foreign matters such as sand and mud adhering to the filter 30 are collected in the accumulation portion 19 on the lower end side of the water inlet chamber 12. That is, the adhering matter adhering to the filter 30 or the foreign matter clogged in the filter 30 is jetted from the outside of the filter 30 (purified water inflow chamber 36 side) to the inside of the cylindrical body 23 (incoming water chamber 12 side). Is pushed away from the upper end side of the water inlet chamber 12 to the lower end side. Therefore, when the spraying means 41 is operated for a certain period of time, the filter 30 becomes clean and clogging of the filter 30 can be eliminated. Further, while the filter 30 is washed by operating the spray means 41 or after washing, the lid 20a of the discharge part 20 is removed and the water collected in the accumulation part 19 is discharged as shown in FIG. Foreign matters and the like can be completely discharged to the outside of the filtration device 10.

  In addition, when providing the above-mentioned spraying means 41, the filtration device 47 provided in the middle of the pipe 46 may have the same configuration as a conventionally known filtration device, but the filter used in the filtration device 10 If the same filter as 30 is built in, the maintenance of the filtration device 47 can be simplified.

  The filtration device 10 described above purifies agricultural water by introducing agricultural water pumped from a well or river from below the water inlet chamber 12 and passing the filter 30 provided on the upper end side of the water inlet chamber 12. However, the present invention is not limited to this, and the vertical relationship in the filtration device 10 may be reversed. That is, as shown in FIG. 8, the water inlet 18 may be provided on the upper end side of the water inlet chamber 12 and the filter 30 may be provided on the lower end side of the water inlet chamber 12. In such a configuration, since the foreign matter captured by the filter 30 remains on the filter 30, it is necessary to disassemble the main body 11 in order to remove this foreign matter. Compared to a known filtration device, the labor required for maintenance such as cleaning of the filter 30 can be reduced.

  Further, as described above, the filtering device 10 has a structure in which agricultural water is passed in the vertical direction in the water inlet chamber 12, but the present invention is not limited to this, and for example, as shown in FIG. It is good also as a structure which installs so that it may be in a horizontal state or an inclined state, and allows agricultural water to flow in the horizontal direction. When the filter device 10 is installed in an inclined state, the foreign matter captured by the filter 30 when the water flow to the water entering chamber 12 accompanying the filtration operation is completed as in the case where the filter device 10 is erected as described above. Therefore, the foreign matter removed from the agricultural water can be easily discharged to the outside by providing the discharge portion 20 in accordance with the settling position of the foreign matter. In addition, when the filtering device 10 is placed horizontally, it is assumed that the foreign matter captured by the filter 30 settles in the vicinity of the filter 30 when the filtering operation is completed. Therefore, when the filtration device 10 is placed horizontally, a portion where foreign substances captured by the filter 30 are gathered when the filtration operation is completed is the accumulation portion 19, and a separate discharge portion is provided in the vicinity thereof. It is desirable.

  In the above embodiment, the filter 30 is obtained by sewing the cloth 31 into a bag shape. However, the present invention is not limited to this, and for example, a so-called seamless process is employed, for example, a seamless shape. It is also possible to use. If the filter 30 has no or almost no seam portion in this way, it is possible to prevent sand and mud from accumulating at the seam portion, and to prevent the filter 30 from being filtered over time.

  In addition, the above-described filter 30 is a double-layered cloth 31 that is sewn in a bag shape, but the present invention is not limited to this, and is a multilayered structure. Alternatively, it may be a single layer. In addition, the filtering device 10 is provided with the support member 22 for mounting the filter 30 in a stretched state. For example, the filter device 10 has a configuration in which the bag-like filter 30 is mounted without providing the support member 22, The cloth 31 may be stretched so as to close the opening on the upper end side of the water inlet chamber 12 without providing the support member 22.

  The cloth 31 constituting the filter 30 is a knitted monofilament warp 31a and a weft 31b made of synthetic fibers. However, at the time of the warp 31a or the weft 31b before knitting as the cloth 31, or At the time when the cloth 31 is knitted, a surface treatment is performed by attaching a substance to which foreign matter such as sand and mud such as polytetrafluoroethylene resin (PTFE), water scale, iron oxide, slime generated by organic microorganisms, etc. are difficult to adhere. It may be applied. According to such a configuration, clogging of the filter 30 can be more reliably prevented.

  Here, the filtration device 10 illustrated in the above embodiment has a structure in which the filter 30 is covered from the outside of the support member 22 and fixed to the cylindrical body 23 by the fixture 32 as shown in FIG. Therefore, if water pressure is applied to the filter 30 during the filtering operation, the filter 30 is pulled and stress is concentrated on a fixing portion or the like by the fixture 32, and the life of the filter 30 may be shortened.

  Therefore, based on such knowledge, the filtering device 10 disposes the filter 30 by disposing a protective member 53 including a protective cylinder 55 and a pressing member 56 on the outer periphery of the filter 30 as shown in FIGS. 10 and 11. A protected configuration may be used. More specifically, the filtering device 10 is mounted with a cylindrical protective cylinder 55 having liquid permeability so as to be in close contact with the outer periphery of the filter 30 and fixed by pressing the protective cylinder 55 from above with a pressing member 56. It is good also as the structure which carried out.

  More specifically, the protective cylinder 55 is made of a punching metal (perforated plate), a metal mesh, or the like, and has an outer diameter that is substantially the same as that of the cylinder body 23 on the lower body 13 side, and an upper end side and a lower end side are opened. It is a thin cylinder. As shown in FIG. 10, the protection cylinder 55 is attached along the outer periphery of the filter 30 attached to the filter support 21 so that the lower end portion abuts against the bottom surface of the lower main body portion 13.

  As shown in FIGS. 10 and 11, a pressing member 56 is attached to the opening portion on the upper end side of the protective cylinder 55. As shown in FIG. 11, the pressing member 56 is roughly divided into a closing portion 57 that closes the opening portion on the upper end side of the protective cylinder 55 and a support piece 58. The closing part 57 has a disk shape, and is roughly divided into a cover part 57a that fits inside the protective cylinder 55 and closes the opening of the protective cylinder 55, and a flange part 57b that projects outward from the cover part 57a. . The lid portion 57 a protrudes on the opposite side with respect to the support piece 58. Further, the flange portion 57 b has a slightly larger outer diameter than the outer diameter of the protective cylinder 55. Therefore, when the lid portion 57a is fitted into the opening portion on the upper end side of the protective cylinder 55, the flange portion 57b comes into contact with the edge of the protective cylinder 55 as shown in FIG.

  As shown in FIGS. 10 and 11, the support piece 58 is a thin plate-like member protruding in the direction opposite to the lid portion 57 a. In the present embodiment, four support pieces 58 are integrated with the closing portion 57. The support pieces 58 are radially arranged at substantially the center of the closing portion 57, and are arranged at equal intervals in the circumferential direction of the closing portion 57. The support piece 58 is integrated with the lower main body portion 13 by covering the upper main body portion 15 from above with the lid portion 57a fitted into the upper end portion of the protective cylinder 55, so that the inner end of the upper main body portion 15 is integrated. The shape hits the wall. For this reason, when the protective cylinder 55 is attached to the outside of the filter 30 and the lower main body portion 13 and the upper main body portion 15 are integrated with the pressing member 56 being attached to the upper end portion thereof, the protective cylinder 55 is attached to the lower main body portion 13. It is sandwiched between the pressing members 56, becomes incapable of moving in the vertical direction in the posture shown in FIGS. 10 and 11, and is firmly supported.

  When the filter device 10 is configured as shown in FIGS. 10 and 11, the protective cylinder 55 and the pressing member 56 are arranged along the filter 30. Therefore, if the protection cylinder 55 or the like is provided, the filter 30 is stuck to the inner wall surface of the protection cylinder 55 or the lid portion 57a of the pressing member 56 even if water pressure is applied to the filter 30 during the filtering operation. Thus, the pulling force hardly acts on the filter 30. Further, in the case of the configuration as described above, since the protective cylinder 55 is made of a porous structure such as a punching metal or a wire netting, the filtration capacity does not decrease even if the filter 30 sticks to the protective cylinder 55. . Therefore, the filtration device 10 can be configured to have a configuration as shown in FIGS. 10 and 11 to prevent excessive stress from acting on the filter 30 and to suppress damage to the filter 30 to a minimum. The protective cylinder 55 is not necessarily made of metal, and may be formed of a resin or the like.

  As described above, in the case of the configuration shown in FIG. 10 or FIG. 11, when the water pressure is applied to the filter 30, the filter 30 is stuck to the lid 57 a in addition to the protective cylinder 55. There is a possibility. Therefore, it is desirable that the lid portion 57a is also made of a punching metal, a wire net, or the like, like the protective cylinder 55.

  A conventionally known tube can be used as the liquid-fusing tube 5 employed in the liquid-fusing system 1 described above, but it can be bent freely, and even if it is repeatedly bent or a load is applied, cracks or the like occur. It is preferable that the material has excellent mechanical strength and has excellent weather resistance, chemical resistance, swelling resistance, heat resistance, cold resistance, tear resistance, impact resistance, and the like. More specifically, the liquid-repelling tube 5 is made of a material selected from, for example, thermoplastic resins such as polyethylene, polyvinyl chloride, polyvinylidene chloride, polyamide, and polyester, natural rubber, synthetic rubber, or elastomer. Or can be produced by appropriately combining these materials. Moreover, in addition to the above-mentioned raw material, the tube 5 for liquid smoke may contain an ultraviolet-ray inhibitor, an antioxidant, a coloring agent, and other additives as needed. Moreover, it is desirable that the liquid-repelling tube 5 be bent to such an extent that it can be wound up so that it can be easily handled when stored, transported or the like.

  Although the drowning system 1 of the said embodiment was what filtered the agricultural water pumped up from the well and the river with the filtration apparatus 10, and sprayed to the farmland F from the dripping tube 5, This invention is limited to this. It is good also as a structure which mixes liquid fertilizer etc. in agricultural water in the middle of the water supply flow path 3, for example. In other words, the liquid that passes through the phlegm system 1 and the filtration device 10 is not limited to agricultural water (water), and may be a liquid in which other substances are mixed or dissolved.

  As shown in FIG. 2, FIG. 6, FIG. 11, etc., the above-described filtration device 10 has a flat bottom end portion of the accumulating portion 19, but the present invention is not limited to this, and the discharging portion 20 It is good also as the shape of a slope which attached the downward slope toward. According to such a configuration, foreign matters such as sand and mud remaining in the accumulation unit 19 and residues such as agricultural water can be smoothly discharged from the discharge unit 20.

  Moreover, although the filtration apparatus 10 of the said embodiment was different in the height (position of an up-down direction) in which the water outlet 17 and the water inlet 18 were provided, this invention is not limited to this, For example, as shown in FIGS. 12 and 13, it is possible to have a structure in which the water inlet 18 penetrates from the side of the main body 11 and communicates with the water inlet chamber 12 provided inside the main body 11. With this configuration, the height of the water supply flow path 3 connected to the filtration device 10 can be made uniform, and the connection between the filtration device 10 and the water supply flow path 3 can be easily performed.

  The filter device 10 is merely an embodiment of the present invention, and the filter device of the present invention may be, for example, a filter device 70 shown in FIG. Hereinafter, the structure of the filtration device 70 will be described in detail with reference to the drawings. In addition, in the filtration apparatus 70, about the part which has the same structure as the filtration apparatus 10, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The main part of the filtering device 70 is constituted by a main body 71, and the main body 71 is supported by a gantry 95. As shown in FIG. 15, the filtering device 70 has a cylindrical filter cylinder 72 attached to the inside of the upper main body 73 constituting the main body 71, and has been described in the above embodiment from the outside of the filter cylinder 72. The filter 30 is attached. That is, the filter device 70 has the same configuration as the filter device 10 described above, but a filter cylinder 72 is provided in place of the filter support member 22 provided in the main body 11, and the filter cylinder 72 is provided in the filter cylinder 72. On the other hand, the filter 30 is mounted.

  More specifically, as shown in FIGS. 15 and 16, the main body 71 has a substantially capsule-shaped appearance and can be divided into an upper main body 73 and a lower main body 75. It has become. A cylindrical portion 76 into which the filter cylinder 72 is inserted is provided at the center of the upper main body 73. On the side surface of the upper main body 73, there are cylindrical portions that function as the water outlet 77 and the water inlet 78. The water outlet 77 penetrates the side surface of the upper main body portion 73 and communicates with the internal space of the cylindrical portion 76. Further, the water inlet 78 communicates with the space 80 inside the upper body portion 73 and outside the cylindrical portion 76.

  As shown in FIGS. 15 and 16, a discharge port 81 that communicates with a space 80 formed outside the cylindrical portion 76 is provided at the bottom of the lower main body portion 75. The discharge port 81 is attached with a removable cover as necessary, and is normally closed.

  The filter cylinder 72 has a structure in which a large number of filter rings 86 are stacked on a cylindrical and bowl-shaped filter cylinder main body 85 and are sandwiched between flanges 87 and 88 of the filter cylinder main body 85. The filter ring 86 is made of resin, and is a donut-shaped flat member as shown in FIG. The filter ring 86 is provided with a large number of grooves 86a radially. Therefore, when a large number of filter rings 86 are stacked and brought into close contact with each other as shown in FIGS. 15 and 16, a small opening 90 formed by the groove 86a is formed on the entire circumference of the filter cylinder 72 as shown in FIG. Formed over. The size of the opening 90 is such a size that foreign matter such as sand and mud that cause the clogging of the liquid smoke tube 5 cannot pass.

  The filter cylinder 72 is inserted into and connected to the cylindrical portion 76 of the upper main body 73. Thereby, the filter cylinder 72 and the space formed inside the cylindrical portion 76 communicate with each other, and the purified water inflow chamber 91 is formed. The purified water inflow chamber 91 is a space formed by communicating the internal space of the filter cylinder 72 and the internal space of the cylindrical portion 76, and communicates with the water outlet 77.

  As shown in FIGS. 15 and 17, the filter cylinder 72 is covered with and fixed to the filter cylinder 72. Therefore, the filtration device 70 is configured such that agricultural water passes through the two filters of the filter 30 and the filter cylinder 72. Moreover, the filter apparatus 70 has the filter cylinder 72 in the purified water inflow chamber 91 side, and the filter 30 in the water inlet chamber 92 side mentioned later.

  As described above, the filtering device 70 has the filter cylinder 72 attached to the upper body 73 and the filter 30 attached to the filter cylinder 72, and then the lower body below the upper body 73. Part 75 is attached. When the upper main body portion 73 and the lower main body portion 75 are integrated, a water entry chamber 92 is formed outside the filter cylinder 72 and the cylindrical portion 76. The water inlet chamber 92 is a space formed by integrating a space 80 formed outside the cylindrical portion 76 and an inner space of the lower main body portion 75, and communicates with the water inlet 78.

  The filtration device 70 is connected to the middle of the water supply flow path 3 in the same manner as the filtration device 10 described above. That is, the upstream side (water supply source side) of the water supply channel 3 is connected to the water inlet 78 and the downstream side of the water supply channel 3 is connected to the water outlet 77. Therefore, the pump 9 provided in the middle of the water supply flow path 3 operates, and the agricultural water pumped up from the water supply source such as a well flows into the water inlet chamber 92 from the water inlet 78 as shown by an arrow in FIG.

  The agricultural water flowing into the water inlet chamber 92 passes through the filter 30 placed on the filter cylinder 72 and flows into the filter cylinder 72 side. At this time, most of the foreign matter such as sand and mud contained in the agricultural water is captured on the surface of the filter 30. The foreign matter captured by the filter 30 settles in a water inlet chamber 92 provided below from the surface of the filter 30.

  On the other hand, the agricultural water that has passed through the filter 30 flows into the purified water inflow chamber 91 through a large number of openings 90 provided on the outer periphery of the filter cylinder 72. At this time, even if foreign matter that could not be captured by the filter 30 remains in the agricultural water that has passed through the filter 30, the foreign matter cannot pass through the opening 90 and flows into the purified water inflow chamber 91. Can not. Therefore, the agricultural water that has flowed into the purified water inflow chamber 91 contains almost no foreign matter that causes clogging of the liquid smoke tube 5 such as sand and mud. The clean agricultural water that has flowed into the purified water inflow chamber 91 is sent out toward the liquid smoke tube 5 through the water outlet 77.

  The foreign matter captured by the filter 30 can be discharged by removing the lid attached to the discharge port 81 provided at the bottom of the lower main body 75. Further, the foreign matter captured by the filter cylinder 72 can be removed by removing the lower main body 75 and the filter 30.

  As described above, the above-described filtration device 70 is configured to include the filter cylinder 72 configured by stacking the filter ring 86 in addition to the filter 30 and includes two filters. Therefore, according to the filtering device 70, the agricultural water can be supplied to the liquid-saloping tube 5 in a more clean state, and clogging of the liquid-saloping tube 5 can be reliably prevented.

  The above-described filtering devices 10 and 70 are merely examples of an embodiment of the present invention, and may be, for example, the filtering device 100 shown in FIG. Hereinafter, the structure of the filtration device 100 will be described in detail with reference to the drawings. In addition, since most of the configurations of the filtration device 100 are the same as those of the filtration device 70 described above, common portions are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 19, the filtration device 100 has a main body 101 having a capsule shape similar to the main body 71 described above, and a connecting member 103 and a swirl flow generating member 105 are disposed therein, A filter cylinder 72 is connected to the connection member 103. The main body 101 is configured to be divided into a main body constituent member 106 and a main body constituent member 107.

  More specifically, the main body constituting member 106 is a bottomed, cylindrical member, and is configured such that connection pipes 108 and 109 are provided on the outer peripheral portion thereof. Both the connecting pipes 108 and 109 communicate with the internal space of the main body constituting member 106. Each of the connecting pipes 108 and 109 protrudes toward the outside of the main body constituting member 106 and can be connected to the water supply flow path 3 by piping.

  Inside the main body constituting member 106, a step portion 106a for arranging a connecting member 103 described later is provided. The step portion 106a protrudes toward the inside in the radial direction of the main body constituting portion 106.

  As shown in FIG. 19, the bottom portion 106 b of the main body constituting portion 106 has a shape that is inclined so as to have a downward slope toward the substantially central portion in the installed state of the filtration device 100. A discharge port 106c is provided in a substantially central portion of the bottom portion 106b. A valve 106d such as a ball valve is attached to the discharge port 106c.

  The main body constituting member 107 is a cylindrical member having a hemispherical top portion. The main body constituting member 107 is configured to be watertightly connectable to the main body constituting member 106. When the main body constituting member 107 is connected to the main body constituting member 106, a water inlet chamber 110 (treatment liquid inflow portion) into which agricultural water can be introduced from the outside through the connection pipe 108 is formed.

  As shown in FIG. 22, the connecting member 103 includes a seat portion 111, a filter tube connecting portion 112, and a water outlet 113. The seat portion 111 has a disk shape whose outer diameter is substantially the same as the inner diameter of the main body constituting member 106, and has a plurality of communication holes 111a on the outer peripheral portion thereof.

  The filter tube connection portion 112 is a cylindrical portion that rises substantially perpendicularly to the seat portion 111 from a substantially central portion of the seat portion 111, and the bottom portion is closed by the seat portion 111. The end of the filter cylinder main body 85 constituting the filter cylinder 72 is inserted into the opening of the filter cylinder connection portion 112 and connected so as to be in a watertight state. Thereby, the purified water inflow chamber 114 is formed inside the filter cylinder 85.

  As shown in FIG. 21, a ring-shaped filter medium fastening member 102 a having a groove on the outer periphery is attached to the upper end side and the lower end side of the filter cylinder 72. A cylindrical filter 104 as shown in FIG. 20 is placed on the filter cylinder 72 so as to surround the outer periphery of the filter cylinder 72. As shown in FIG. 19, the filter 104 is fixed by being sandwiched by band-shaped or ring-shaped fixtures 102b attached so that the upper end side and lower end side portions fit into the grooves of the filter medium fastening member 102a.

  The filter 104 is made of the same material as the filter 30 described above, and has the same filtration performance. Therefore, the filtration device 100 causes sand, mud, and the like contained in the agricultural water by flowing agricultural water in a direction from the water inlet chamber 110 formed outside the filter cylinder 72 toward the purified water inflow chamber 114. It is the structure which can catch the foreign material.

  The water outlet 113 is a cylindrical portion that communicates with the outer peripheral surface of the filter cylinder connecting portion 112. The end surface 113 a of the water outlet 113 is curved so as to follow the outer periphery of the seat portion 111.

  As shown in FIG. 19, the connecting member 103 is arranged inside the main body constituting member 106 so that the filter connecting portion 112 protrudes upward (in a direction opposite to the bottom portion 106 b). When the connection member 103 is arranged inside the main body constituting member 106, the seat portion 111 is caught by the step portion 106a, and a space is formed. The space formed below the seat portion 111 functions as an accumulation portion 115 where sand and mud collected by filtering agricultural water are collected, like the accumulation portion 19 of the filtration device 10 described above. The accumulation portion 115 communicates with a space 119 above the seat portion 111 through a communication hole 111 a provided in the seat portion 111.

  Further, the connection member 103 is disposed so that the opening of the water outlet 113 communicates with the connection pipe 109 provided in the main body constituting member 106. Therefore, in the filtering device 100, the connecting pipe 109 communicates with the inside of the filter tube connecting portion 112 of the connecting member 103.

  As shown in FIG. 23, the swirl flow generating member 105 has an inner ring part 116 having a substantially circular shape in plan view, and an outer ring part 117 having a larger diameter than the inner ring part 116, and a plurality of blades 118 are attached therebetween. It is said that. The inner ring portion 116 has an inner diameter that is substantially the same as the outer diameter of the filter cylinder 112 of the connecting member 103 described above, and is arranged so that the center of the inner ring portion 117 and the outer ring portion 117 substantially coincide with each other. Further, the outer ring portion 117 has an outer diameter substantially the same as the inner diameter of the main body constituting member 106.

  The blade 118 is a plate-like member and is attached to the inner ring portion 116 and the outer ring portion 117 in a spiral shape. In the space formed between the inner ring portion 116 and the outer ring portion 117, a plurality of inner ring portions 116 are attached in the circumferential direction and arranged at substantially equal intervals in the circumferential direction. As shown in FIG. 19 and FIG. 24, the swirling flow generating member 105 is attached in a state where the filter tube connecting portion 112 of the connecting member 103 is inserted into the inner ring portion 116. Therefore, the blade 118 forms a spiral surface inclined with respect to the axis L assuming an axis L extending in the extending direction of the filter cylinder 72 in a state where the filter cylinder 72 is connected to the connection member 103.

  In a state where the swirling flow generating member 105 is attached to the connecting member 103, the above-described connecting pipe 108 is in an open state in a space 119 formed between the seat portion 111 of the connecting member 103 and the swirling flow generating member 105. . Therefore, as shown by an arrow in FIG. 25, when agricultural water is introduced into the space 119 from the outside via the connecting pipe 108, the agricultural water turns upward from below the swirl flow generating member 105 and flows along the blades 118. The water can flow into the water inlet chamber 110 as a flow.

  The filtration device 100 of the present embodiment is used by being connected to the middle of the water supply flow path 3 in the same manner as the filtration devices 10 and 70 described above. More specifically, the pipe on the upstream side (water supply source side) of the water supply flow path 3 is connected to the connection pipe 108 and the downstream pipe is connected to the connection pipe 109.

  When the pump 9 is operated with the filtering device 100 connected to the water supply flow path 3, the agricultural water pumped up from the water supply source such as a well is swirled through the connection pipe 108 as shown by the arrow in FIG. It flows into a space 119 formed between the member 105 and the seat 111 of the connecting member 103. The agricultural water that has flowed into the space 119 flows along the blades 118 provided in the swirl flow generating member 105 and flows into the water inlet chamber 110. At this time, the agricultural water flowing into the water entering chamber 110 becomes a swirling flow that flows along the filter cylinder 72 and the filter 104 mounted on the outside thereof.

  When agricultural water flows into the water inlet chamber 110, it passes through the filter 104 placed on the filter cylinder 72 and flows into the purified water inlet chamber 114 formed inside the filter cylinder 72. At this time, most of the foreign matter such as sand and mud contained in the agricultural water is captured on the surface of the filter 104. Since the foreign matter captured by the filter 104 circulates around the filter 104 by the water flow of agricultural water flowing into the water inlet chamber 110 as a swirling flow, there is a low possibility that the foreign matter is caught or adhered to the mesh of the filter 104. That is, in the present embodiment, the filter 104 is formed by foreign matter biting into or adhering to the mesh of the filter 104 due to the flow of agricultural water flowing into the water inlet chamber 110 and turning into the swirl flow and flowing outside the filter cylinder 72 and the filter 104. Can alleviate clogging.

  The agricultural water that has passed through the filter 104 is further filtered and purified when it flows into the purified water inflow chamber 114 through a plurality of openings 90 provided on the outer periphery of the filter cylinder 72. Therefore, when the agricultural water flows into the purified water inflow chamber 114, it is in a clean state that hardly contains foreign matters such as sand and mud. The agricultural water that has flowed into the purified water inflow chamber 114 is taken out to the outside of the filtration device 100 via the connecting pipe 109. And this agricultural water is supplied to each liquid-solution tube 5 through the water supply flow path 3 and the distribution pipe 6 connected to this.

  On the other hand, when the pump 9 is stopped and the supply of agricultural water to the filtration device 100 is stopped, the flow of agricultural water in the water inlet chamber 110 stops, and the filter 104 flows into the purified water inflow chamber 114 side during the filtration of agricultural water. The foreign matter that has been prevented from dropping falls together with the agricultural water remaining in the water entering chamber 110. Thereby, agricultural water containing foreign matter flows into the accumulation portion 115 via the communication hole 111 a provided in the seat portion 111.

  Foreign matter and agricultural water flowing into the accumulating portion 115 can be discharged to the outside by opening the valve 106d provided on the bottom portion 106b of the main body constituting member 106 regardless of whether the pump 9 is operating or stopped. In the present embodiment, the configuration in which the valve 106d is provided in the bottom discharge port 106c is illustrated, but a configuration may be adopted in which a cover member or the like is provided in place of the valve 106d and the agricultural water or foreign matter can be discharged by opening the cover member. Good.

  As described above, the filtering device 100 is configured such that the filter 104 is put on the outside of the cylindrical filter cylinder 72 that constitutes the purified water inflow chamber 114, and when agricultural water flows into the water inlet chamber 110, the agricultural water is A swirling flow that flows along the filter 104 and the filter cylinder 72, and reaches the entire surface of the filter 104. Therefore, when the agricultural water becomes a swirl flow like the filtration device 100, the water flow of agricultural water is concentrated on a part of the filter 104 and only a part of the filter is clogged. It is difficult for problems to occur, and the agricultural water can be filtered substantially uniformly throughout the filter 104. That is, in the filtration device 100, the entire filter 104 can be effectively used for the filtration of agricultural water.

  The filtration device 100 is used by covering the filter cylinder 72 having a large number of openings 90 on the outer periphery with the filter 104 in the same manner as the filtration device 70 described above. Therefore, in addition to the filter 104, the filter device 100 of the present embodiment also functions as a filter for filtering agricultural water with respect to the filter cylinder 72. Therefore, as with the filtering device 70, the filtering device 100 can reliably capture foreign substances contained in the liquid.

  As with the filtering device 70, the filtering device 100 is configured such that agricultural water flows from the filter 104 side toward the filter cylinder 72 side during the filtration of agricultural water. For this reason, foreign matter contained in the agricultural water is first captured by the filter 104, and a very small amount of foreign matter flows into the filter cylinder 72 side, or the opening 90 provided in the filter cylinder 72 or a liquid crystal tube. 5 is assumed to have a very small particle diameter that does not cause clogging of the small holes 8. Therefore, the filtration device 100 has a very low possibility of clogging the opening 90 of the filter cylinder 72 and the small hole 8 of the filtrate tube 5, and minimizes the frequency of maintenance such as cleaning and replacement of the filter cylinder 72. Can be suppressed.

  The filtration device 100 described above has a filter cylinder 72 as with the filtration device 70, and covers the filter 104 with respect to the filter cylinder 72. Although it was the thing of the structure which generate | occur | produces the swirling flow of water, this invention is not limited to this. More specifically, instead of the filter cylinder 72, for example, the filter 30 or the filter 104 is used for a structure in which the support member 22 is combined to form a skeleton structure like the filter support 21 shown in the above-described filtration device 10. It is good also as a covered structure.

  The filtration device 100 described above has a configuration in which the connection member 103 is arranged inside the main body constituting member 106 and the swirl flow generating member 105 is attached thereto. However, the present invention is not limited to this, and FIG. It is also possible to adopt a configuration such as the filtering device 130 shown in FIG. Hereinafter, the configuration of the filtration device 130 will be described. The filtering device 130 has a configuration that is mostly similar to the filtering device 100 described above, and therefore, detailed description of common portions is omitted.

  In the filtering device 130, a portion corresponding to the main body constituting member 107 of the above-described filtering device 100 is constituted by a main body constituting member 131 as shown in FIG. 28, but a portion corresponding to the main body constituting member 106 is constituted by the main body constituting member 132. 133, and the configuration is different from the above-described filtering device 100 in that the main body constituting members 132 and 133 can be divided into upper and lower parts as necessary.

  More specifically, the main body constituting member 132 corresponds to the cylindrical body portion constituting the main body constituting portion 106 described above, and screw grooves 132a and 132b are provided on the upper end side and the lower end side as shown in FIG. The lower end portion of the main body constituting member 131 and the upper end portion of the main body constituting member 132 can be screwed together. Connection pipes 135 and 136 are provided on the outer peripheral portion of the main body constituting member 132, and the pipes can be connected to the water supply flow path 3 through the connection pipes 135 and 136.

  The main body constituting member 132 is characterized in that a portion corresponding to the connecting member 103 in the filtration device 100 is integrally provided therein. That is, a seat portion 137 and a filter tube connecting portion 138 are provided inside the main body constituting member 132. The seat portion 137 corresponds to the seat portion 111 of the connection member 103 described above, and the filter tube connection portion 138 corresponds to the filter tube connection portion 112. The filter tube connection portion 138 communicates with the connection pipe 136 described above. The seat 137 is provided with a number of openings 139.

  The main body constituting member 133 corresponds to a portion on the bottom side of the main body constituting portion 106 described above, and has a bowl shape as shown in FIG. A thread groove 133a is provided on the upper end side of the main body constituent member 133, and is configured to be detachable from the main body constituent member 132 through this. A discharge port 133b is provided at the bottom of the main body constituting member 132, and is normally closed by a lid member 133c.

  As shown in FIG. 27, the filter device 130 has a filter cylinder 72 and a swirl flow generating means 105 mounted in a water inlet chamber 140 (treatment liquid inflow portion) formed inside by integrating main body constituting members 131 to 133. The filter 104 is mounted on the filter cylinder 72. More specifically, the filter cylinder 72 is inserted into and fixed to the filter cylinder connecting portion 138 of the main body constituting member 132. Thereby, the purification liquid inflow chamber 141 is formed inside the filter cylinder 72. Further, as shown in FIG. 27, the swirling flow generating means 105 is arranged so as to be sandwiched between the seat portion 137 of the main body constituting member 132 and the bottom side of the filter cylinder 72. The filter 104 is mounted so as to cover the filter cylinder 72 as in the case of the filter device 100 described above, and the upper and lower ends of the filter cylinder 72 are sandwiched between the filter medium fastening member 102a and the fixture 102b. It is fixed.

  The filtration device 130 is also used in the same manner as the filtration device 100 described above. That is, in the filtering device 130, the upstream portion of the water supply flow path 3 is connected to the connection pipe 135, and the downstream portion of the water supply flow path 3 is connected to the connection pipe 136. When the pump 9 is operated with the pipe connected in this way, the agricultural water pumped up from the well or the like as shown by the arrow in FIG. It flows in as a swirl flow that flows along 104.

  The agricultural water that has flowed into the water entry chamber 140 passes through the filter 104 and the filter cylinder 72 and flows into the purified water inflow chamber 114. At this time, most of the foreign matters such as sand and mud contained in the agricultural water are once captured by the surface of the filter 104, but the agricultural water flowing as a swirling flow on the surface of the filter 104 is large. Since the portion is removed, the filter 104 is not bitten or attached to the mesh. The agricultural water that has passed through the openings 90 provided on the outer periphery of the filter 104 and the filter cylinder 72 and flows into the purified water inflow chamber 114 and is purified is taken out of the filter device 130 through the connection pipe 136, It is supplied to each tube 5 for liquid smoke.

  When the filtration device 130 stops the supply of agricultural water by stopping the pump 9, the flow of agricultural water in the water entry chamber 140 stops and falls in the water entry chamber 140. Along with this, the foreign matter adhering to the water entering chamber 140 and the filter 104 falls together with the agricultural water falling in the water entering chamber 140, and the main body constituent member 133 side through the opening 139 provided at the bottom of the main body constituent member 132. Fall into. Thereby, agricultural water containing foreign matter is collected in the main body constituting member 133. Therefore, if the main body constituting member 133 is detached from the main body constituting member 132 after the pump 9 is stopped, the foreign matter removed by filtration can be discharged to the outside.

  Also, the filtering device 130 may be configured such that a discharge port is provided at the bottom of the main body constituent member 133 and a valve such as a ball valve is attached to the filtering device 130 as in the above-described filtering device 100. In such a configuration, foreign matter and agricultural water collected in the main body constituting member 133 can be discharged to the outside by opening the valve described above regardless of whether the pump 9 is operating.

  The filtration device 130 is configured to be a swirling flow that flows along the filter 104 and the filter cylinder 72 when the agricultural water is introduced in the same manner as the filtration device 100. For this reason, the filtration device 130 can prevent the agricultural water containing the foreign matter to be filtered from reaching the entire filter 104 substantially equally as the filtration device 100, and the filter 104 can be prevented from being clogged with foreign matter by only a part. The frequency of maintenance such as replacement and cleaning of the filter 104 can be minimized.

  Moreover, since the filtration apparatus 130 is the structure which integrated and integrated the part corresponded to the connection member 103 of the above-mentioned filtration apparatus 100 in the main body structural member 131, the number of parts can be reduced and manufacturing cost can be made low. In addition, the positioning accuracy of the portion corresponding to the connection member 103, the filter cylinder 72 attached thereto, and the swirl flow generating member 105 is high even under the influence of the water flow. Therefore, if it is set as the filtration apparatus 130, the stable filtration performance can be exhibited irrespective of the magnitude of a water flow.

  In the filtering device 130, the main body constituting members 132 and 133 are screw-fitted, and when the filtration is finished by disassembling both, the agricultural water remaining inside and the supplemented foreign matter can be discharged at once. it can. Therefore, the filtration device 130 is easy to maintain after completion of filtration.

Examples of the present invention will be described below.
FIG. 31 is a conceptual diagram schematically showing a test method for the relationship between the material of the filter 30 used in the filtration device 10 and the filtration capacity, with respect to the spill system 1 according to one embodiment of the present invention. Table 1 shows the result of the liquid-salt test performed by changing the material of the filter of the filtration device 10 in the liquid-salt system 1 shown in the above embodiment.

  As shown in FIG. 31, the drowning system 1 has an irrigation channel 2 for irrigating the farmland F and an irrigation channel by pumping water corresponding to agricultural water pumped up from a river or an agricultural well from a water supply source W. 2 and a water supply flow path 3 for supplying water. The irrigation flow path 2 was configured by arranging the four liquid-fed tubes 5 in parallel with the farmland F over 30 [m]. As the liquid smoke tube 5, a trade name “Sumisansui R-House Wide” (tube folding diameter 62 [mm], equivalent diameter 34 [mm]) manufactured by Sumika Agricultural Materials Co., Ltd. was adopted. Each of the four liquid smoke tubes 5 was connected to the water supply flow path 3 via a distribution pipe 6.

  In this example, in the above-described liquid spill system 1, the water pumped from the water supply source W was water containing 0.05 [wt%] of clay mineral having a particle size distribution of 50 to 200 [μm]. In this example, as the filter 30 of the filtration device 10, a single fiber cloth (sample A) knitted from the single fiber warp 31a and the weft 31b exemplified in the above embodiment is used, and a non-woven fabric (sample B). ) And wire mesh (sample C). The openings of samples A to C were unified to 100 [μm].

  In the present embodiment, the water supply amount is adjusted so that the total water supply amount is 164 [liters / minute], that is, the water supply amount for each of the liquid smoke tubes 5 is 41 [liters / minute · main], under the above-described apparatus configuration. Then, an experiment in which water was sprayed four times for 15 minutes per day was conducted for two weeks. Moreover, the cover 20a of the discharge part 20 of the filtration apparatus 10 was opened every two days in a non-water-permeable state, and collected matter such as mud and sand collected in the accumulation part 19 was discharged.

  Hereinafter, the results of the liquid smoke test under the above-described conditions will be described with reference to Table 1. As shown in Table 1, in this example, samples A to C are employed as the filter 30 to calculate the weight difference of the filter 30 before and after performing the above-described liquid test, and to filter after the liquid test The cleanliness of 30 was confirmed visually. Moreover, about the change of the liquid-immersion state during a liquid-immersion test, the discharge state of the water in the tube 5 for liquid-immersion and the wet state of the farmland F after liquid-immersion were confirmed visually.

  As a result of the above-described slag test, as shown in Table 1, when a cloth (sample A) knitted with nylon single fibers was used as the filter 30, the weight of the filter 30 increased by 3.0 [g]. Even when the filter 30 after the phlegm test was visually observed, foreign matter such as mud and sand was hardly bitten. Moreover, the tube 5 for a phlegm was not clogged at all over the test | inspection period of a phlegm test | inspection, the watering distribution and the amount of watering were appropriate, and the state of liquid pouring was very favorable.

  On the other hand, when a non-woven fabric (sample B) was employed as the filter 30, the weight of the filter 30 increased by 420 [g] before and after the sag test. Further, when the filter 30 after the phlegm test was visually observed, foreign matters such as mud and sand were caught between the complicated fibers, and the cleanliness was the lowest among the samples A to C. Moreover, the tube 5 for liquid smoke was completely clogged on the 8th day from the start of the liquid liquid test, and was in a state in which liquid injection was impossible.

  Further, when a wire mesh (sample C) was adopted as the filter 30, the weight of the filter 30 increased by 60 [g] before and after the slag test. Further, when the filter 30 after the phlegm test was visually observed, foreign matter such as mud and sand was caught in some of the meshes, and the cleanliness was lower than that of the sample A using a single fiber cloth as the filter 30. Moreover, the amount of the liquid in the liquid tube 5 gradually decreased from the start of the liquid test. Therefore, when two weeks passed from the start date of the phlegm test, a defective liquefaction point where the farmland F dried was generated when one hour had passed since the end of the phlegm test over 15 minutes.

  By adopting a cloth (sample A) knitted with a single fiber as the filter 30 by the above-described liquid-soaking test, the filter 30 can be compared with a case where a nonwoven fabric (sample B) or a wire mesh (sample C) is employed as the filter 30. Clogging was reliably prevented. Accordingly, it has been found that the cloth 30 (sample A) in which the single fibers are knitted is optimal as the filter 30 by the above-described phlegm test.

It is a perspective view which shows notionally the dripping system which is one Embodiment of this invention. It is a disassembled perspective view which shows the filtration apparatus employ | adopted in the liquid-salt system shown in FIG. It is sectional drawing which shows the filtration apparatus shown in FIG. (A) is an A direction arrow directional view of FIG. 3, (b) is a B direction arrow directional view of FIG. (A) is a perspective view which shows the filter employ | adopted in the filtration apparatus shown in FIG. 2, (b) is the A section enlarged view of (a), (c) is a B direction arrow view of (a). is there. It is sectional drawing which shows the modification of the filtration apparatus shown in FIG. It is sectional drawing which shows the filtration apparatus shown in FIG. It is sectional drawing which shows another modification of the filtration apparatus shown in FIG. It is sectional drawing which shows another modification of the filtration apparatus shown in FIG. It is sectional drawing which shows the modification of the filtration apparatus shown in FIG. It is an exploded view of the filtration apparatus shown in FIG. It is a figure which shows another modification of the filtration apparatus shown in FIG. 2, (a) is a top view of the said filtration apparatus, (b) is a front view of the said filtration apparatus. It is sectional drawing of the filtration apparatus shown in FIG. It is a front view which shows another modification of the filtration apparatus shown in FIG. It is an exploded view of the filtration apparatus shown in FIG. It is sectional drawing which shows the main-body part which comprises the filtration apparatus shown in FIG. It is sectional drawing of the filtration apparatus shown in FIG. (A) is a front view which shows the filter ring employ | adopted in the filtration apparatus shown in FIG. 14, (b) is the A section enlarged view of FIG. It is sectional drawing which shows the filtration apparatus concerning one Embodiment of this invention. It is a perspective view which shows the filter employ | adopted with the filtration apparatus shown in FIG. (A) is a front view which shows the filter-medium fastening member employ | adopted with the filtration apparatus shown in FIG. 19, (b) is AA sectional drawing of (a), (c) is a side view of (a), (D) is sectional drawing which shows the attachment state of the filter by the filter-medium fastening member and fixing tool shown to (a). It is a perspective view which shows the connection member employ | adopted with the filtration apparatus shown in FIG. (A) is a front view which shows the swirl | flow-flow generation member employ | adopted with the filtration apparatus shown in FIG. 19, (b), (c) is a side view of (a), (d) is A of (a). -A sectional drawing, (e) is a perspective view of (a), (f) is a back view of (a). It is a perspective view which shows the state which assembled | attached the connection member and the turning flow generation member with respect to the main body structural member employ | adopted with the filtration apparatus shown in FIG. It is a perspective view which shows the flow of the water flow which generate | occur | produces in the filtration apparatus shown in FIG. It is a perspective view which shows the filtration apparatus concerning the modification of embodiment shown in FIG. It is sectional drawing which shows the internal structure of the filtration apparatus shown in FIG. (A) is a top view of the main-body-part structural member employ | adopted by FIG. 26, (b) is AA sectional drawing of (a). (A) is a perspective view of the main body part constituting member adopted in FIG. 26, (b) is a side view of (a), (c) is a sectional view of (a), and (d) is (a). FIG. (A) is a top view of the main-body-part structural member employ | adopted by FIG. 26, (b) is a top view of (a), (c) is AA sectional drawing of (b), (d). FIG. 4B is a sectional view taken along line BB in FIG. It is a conceptual diagram which shows the outline of the test method of the filtration apparatus concerning the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Smoke system 5 Smoke tube 10,70,100,130 Filtration apparatus 11,71,101 Main-body part 12,92,110,140 Water entering chamber (treatment liquid inflow chamber)
13, 73 Lower body part 15, 75 Upper body part 19, 115 Accumulation part 20 Discharge part 21 Filter support (skeleton structure part)
30, 104 Filter 31 Cloth 31a Warp 31b Weft 31c Crossing portion 36, 114, 140 Purified liquid inflow chamber 41 Spray means 50 Shower head 53 Protective member 55 Protective cylinder 56 Pressing members 106, 107, 131, 132, 133 Main body constituting member 105 Swirling flow generating member 118 blade

Claims (10)

A filtration device for a phlegm system for filtering a liquid to be supplied to a scattered liquid used for the clarification liquid,
A treatment liquid inflow portion from which liquid flows in from the outside;
Filtering means for preventing the passage of foreign substances contained in the liquid flowing into the treatment liquid inflow section;
A liquid-feeding section that feeds the liquid that has passed through the filtering means toward the soot liquid,
The filtration device for a dripping system, wherein the filtration means is constituted by a single fiber. The treatment liquid inflow part is composed of a cylinder that can introduce liquid from the outside,
On the downstream side in the flow direction of the liquid flowing into the cylindrical body, there is an outlet for flowing out the liquid,
The filtering means filters the liquid flowing out from the outlet,
On the upstream side in the flow direction of the liquid flowing into the cylindrical body from the outlet, there is provided an accumulating portion in which foreign matter blocked from passing by the filtering means is collected, and the foreign matter is discharged to the accumulating portion. 2. The filtration device for a spill system according to claim 1, wherein a foreign matter discharge port is provided. The treatment liquid inflow portion is constituted by a cylinder capable of introducing liquid from the outside, and has an outlet for flowing out the liquid introduced into the cylinder on the upper end side,
The filtration means is mounted so as to cover the outlet on the upper end side of the processing liquid inflow portion, and filters the liquid flowing out from the outlet,
On the lower end side of the processing liquid inflow portion, an accumulation portion is provided for collecting foreign matter blocked by the filtering means, and the accumulation portion is provided with a foreign matter discharge port for discharging foreign matter. The filtration device for a spill system according to claim 1.   4. The bag according to claim 2, wherein a skeleton structure portion is provided on the downstream side in the flow direction of the liquid flowing inside the cylindrical body, and a filtering means is attached to the skeleton structure portion. Filtration device for liquid systems.   A protective member is provided outside the filtering means, and the liquid flows out in the direction from the inside to the outside of the treatment liquid inflow portion with respect to the filtering means, so that part or all of the filtering means is the inner wall surface of the protective member. The filtration apparatus for a spill system according to any one of claims 1 to 4, wherein the filtration apparatus is attached to the liquid.   6. The spray system according to claim 1, further comprising spray means capable of spraying liquid in a direction from the outside to the inside of the treatment liquid inflow portion with respect to the filtration means. Filtration device. It has a purifying liquid inflow part inside the processing liquid inflow part,
A filtration means is attached to the outside of the purification liquid inflow portion,
The liquid that has flowed into the processing liquid inflow portion can be filtered by passing the filtering means from the processing liquid inflow portion side and flowing into the purification liquid inflow portion side,
The swirl flow generating means capable of turning the liquid flowing into the treatment liquid inflow portion into a swirl flow that flows along the filtering means disposed outside the purifying liquid inflow portion. Filtration device for the liquid spill system. The purification liquid inflow portion is cylindrical, and has a large number of openings on the outer periphery.
8. The filtration device for a phlegm system according to claim 7, wherein the size of the opening is a size capable of preventing the passage of a foreign substance contained in the liquid.   The filtration means for a spill system according to any one of claims 1 to 8, wherein the filtering means is knitted so that warp yarns and weft yarns composed of single fibers are slidable from each other. apparatus.   10. The cocoon according to claim 1, wherein the filtering means has a mesh shape in which warp yarns and weft yarns composed of single fibers intersect, and the mesh opening is 50 μm or more and 100 μm or less. Filtration device for liquid systems.

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