Suction and collection device

Abstract

To provide a suction and collection device capable of suctioning a collection target without significantly reducing suction power and separation performance even when a certain amount or more of the collection target is suctioned.SOLUTION: A suction and collection device 1 comprises a box-shaped rigid container part 2 and a bag body 3 having a mesh and accommodated in the rigid container part 2. The rigid container part 2 includes a container lid part 22 and a container main body part 21. The container main body part 21 has a discharge port 212 at its lower portion, connected to suction means via a pipe, and an inlet port 211, 221 at the upper portion of the container main body part 21 and / or the container lid part 22, to which a pipe can be connected. The holes of the mesh are blocked at the upper part of the bag body 3 having the mesh.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an apparatus for sucking and collecting objects to be collected.

Background Art

[0002] There is a demand for a technique for efficiently sucking and collecting waste discharged from agricultural land, manufacturing factories, etc., such as sludge, dust and cake deposited in ducts, and waste in the sea, rivers, etc., such as garbage, sand and gravel. For example, sludge is a mixture of solids such as soil and liquids such as water, and in order to efficiently collect and dispose of such a mixture, it is preferable that these solids and liquids be separated as much as possible.

[0003] To solve the above problems, the applicant has invented the invention according to Patent Document 1 and obtained a patent. Patent Document 1 is a suction and collection device including a box-shaped rigid container part and a bag body having a mesh accommodated in the rigid container part, the rigid container part being composed of a container lid part and a container body part, and in the container body part, at its lower part, having an outlet connected to a suction means via a pipe, and having an inlet capable of connecting a pipe in the upper part of the container body part and / or the container lid part. The above invention enables efficient and easy collection without moving to the site where waste such as sludge is generated and without giving adverse effects such as dirt and bad odor to workers and the working environment, and can efficiently separate liquid and solid, and obtain the effect of easily reducing the volume of the object to be collected on site.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Although the invention of Patent Document 1 achieved certain effects, there were cases where the effects could not be fully exerted depending on the collection target. For example, when the collection target was sludge with high viscosity, if a certain amount or more of sludge was collected, the suction force would decrease, and it might be difficult to suck more sludge than that amount. In particular, such a tendency was more prominent as the capacity of the container main body increased. Therefore, a technology that could solve such problems was desired.

Means for Solving the Problems

[0006] As a result of intensive studies by the present inventor, it was found that the above problems could be solved by making the suction and collection device have a specific structure, and thus the present invention was achieved. That is, the present invention is [1] A suction and collection device including a box-shaped rigid container part and a bag body having a mesh accommodated in the rigid container part, The rigid container part is composed of a container lid part and a container main body part, In the container main body part, at its lower part, it has an outlet connected to a suction means via a pipe, In the upper part of the container main body part and / or the container lid part, it has an inlet to which a pipe can be connected, The holes of the mesh are blocked at the upper part of the bag body having a mesh, A suction and collection device, characterized by the above, [2] The bag body is a flexible container bag, and the holes of the mesh are blocked by a gas-impermeable film provided at the upper inner part of the flexible container bag. The suction and collection device according to [1], [3] Further, a spacer for preventing the bottom of the bag body from contacting the bottom surface of the container main body is provided on the inner bottom surface of the container main body. The suction and collection device according to [1], and [4] The spacer includes at least two legs and a ladder part spanning the legs. The suction and collection device according to [3], relates to.

Effects of the Invention

[0007] According to the present invention, even when a collection target of a certain amount or more is sucked, the collection target can be sucked without significantly reducing the suction force and the separation ability.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0009] Preferred embodiments of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to the following embodiments and modes, and various modifications are possible within the technical scope of the present invention. Also, "up and down", "front and back", and "left and right" in the text mean the directions shown in each drawing.

[0010] 1. The device of the present invention As described above, the suction and collection device 1 of the present invention includes a box-shaped rigid container portion 2 and a bag body 3 having a mesh accommodated in the rigid container portion 2. The rigid container portion 2 is composed of a container lid portion 22 and a container main body portion 21. In the container main body portion 21, an outlet 212 connected to a suction means via a pipe is provided at its lower part, and an inlet (211 or 221) to which a pipe can be connected is provided in the upper part of the container main body portion 21 and / or the container lid portion 22. The holes of the mesh are blocked at the upper part of the bag body 3 having a mesh. The bag body 3 is accommodated with its opening facing upward. The rigid container portion 2 of the present invention is sucked by a suction means to suck and collect a collection object into the bag body 3 in the rigid container portion 2, and in some cases, separation is performed through the mesh of the bag body 3. Note that the number of bag bodies 3 accommodated in the rigid container portion 2 may be only one, or two or more bag bodies can be stacked and inserted. The number of bag bodies 3 accommodated in the rigid container portion 2 can be appropriately changed based on the type of collection object, the size of the grains, etc. Hereinafter, the rigid container portion 2 and the bag body 3 will be described in detail.

[0011] (1) Rigid container portion 2 The rigid container portion 2 of the present invention is a box-shaped container made of a rigid material. Since the rigid container portion 2 is box-shaped, it is possible to easily move the rigid container portion 2 by placing it on the loading platform of a truck or the like, and perform suction and collection operations at the site where the collection object is generated. As described above, since the rigid container portion 2 of the present invention is sucked by a suction means, a decompression load is applied inside it. Therefore, the rigid container portion 2 is preferably manufactured from a rigid material that can resist such a decompression load. Specific examples of such rigid materials include metal materials such as iron, steel, and stainless steel, and synthetic resin materials. From the viewpoints of ease of processing and durability, the rigid container portion 2 is more preferably manufactured from iron and / or steel.

[0012] The rigid container part 2 of the present invention is composed of a container main body part 21 and a container lid part 22 (see Fig. 1(a)). The container lid part 22 may be structured to be completely removable from the container main body part 21. Also, the container lid part 22 may be connected to the container main body part 21 using a hinge or the like. As described above, by sucking the inside of the rigid container part 2 with the sucking means, sucking and collecting of the object to be collected are performed. Therefore, it is preferable that the container main body part 21 is closed by the container lid part 22 and has a structure in which air does not easily leak from the contact surface between the container main body part 21 and the container lid part 22. For example, it is preferable to fix the container main body part 21 and the container lid part 22 with fixing means 23. By using such fixing means 23, it is possible to prevent air from easily leaking from the contact surface between the container main body part 21 and the container lid part 22. Also, by using the fixing means 23, the container main body part 21 and the container lid part 22 are firmly fixed, and the resistance to the reduced pressure applied to the inside of the rigid container part 2 by suction can be increased. Further, by using the fixing means 23, the bag body 3 described later can be held inside the suction and collection device 1 by sandwiching the bag body 3 between the container main body part 21 and the container lid part 22. As a specific example of such fixing means 23, for example, screw fastening with a bolt 232 and a nut 231 as shown in Fig. 1(b) can be mentioned. When using the bolt 232 and the nut 231, a hole for passing the bolt 232 may be made in the bag body 3, or when sandwiching the bag body 3 between the container main body part 21 and the container lid part 22, the bag body 3 may be sandwiched avoiding the bolt 232.

[0013] The container main body part 21 has an outlet 212 connected to the sucking means via a pipe at its lower part. By operating the sucking means connected via the pipe, for example, a pump, the air inside the container main body part 21 and the substances that have passed through the mesh of the bag body 3, such as fine particles and liquid, are discharged through the outlet 212. Since the outlet 212 is provided at the lower part of the container main body part 21, even when the object to be collected contains substances that can pass through the mesh of the bag body 3, such as fine particles and liquid, these substances can be efficiently sucked out from the container main body part 21.

[0014] In the upper part of the container main body 21 and / or the container lid 22, an inlet 211 and / or 221 to which a pipe can be connected is provided. These inlets 211 and 221 are inlets for sucking a collection target, for example, sludge, through the hard container part 2 and collecting the sludge in a bag body 3 described later. As shown in Fig. 1(a), the inlet may be provided in the container lid 22, or as shown in Fig. 1(c), it may be provided in the upper part of the container main body 21, or it may be provided in both the container lid 22 and the upper part of the container main body 21 (not shown). When the inlet 221 is provided in the container lid 22, the position of the inlet 221 in the container lid 22 is not particularly limited as long as the collection target sucked from the inlet 221 and collected in the bag body 3 can be filled in the bag body 3. However, in order to easily and surely fill the collection target in the bag body 3, it is preferable to provide the inlet 221 at approximately the center of the container lid 22 as shown in Fig. 1(a).

[0015] As shown in Fig. 1(c), when the upper part of the container main body 21 is provided with the inlet 211, it is preferable to provide a guiding pipe 211a for transporting the collection target from the inlet 211 to the bag body 3 (see Fig. 1(d)). However, as will be described later, when performing the suction and collection operation using the device of the present invention, when the bag body 3 is filled with a collection target, for example, sludge, the container lid 22 is opened, the bag body 3 containing the sludge is taken out from the container main body 21, and a new bag body 3 is put into the container main body 21. Depending on the working environment and the type of the collection target, etc., this operation needs to be performed frequently. Therefore, if the guiding pipe 211a is provided in the container main body 21, there is a risk of interfering with the replacement operation of the bag body 3. Therefore, it is more preferable that the inlet is provided only in the container lid 22 in order to perform the replacement of the bag body 3 more smoothly. Note that the outlet 212, the inlets 221 and 211 can be subjected to any processing conventionally used, such as threading, for connecting a pipe.

[0016] Note that the shape of the rigid container portion 2 is not particularly limited, and it may be cylindrical as shown in FIGS. 1(a) and 1(c), or may be a polygonal column such as a quadrangular column (see FIG. 1(e)), a pentagonal column (not shown), a hexagonal column (not shown), etc. However, as described above, a decompression load is applied to the rigid container portion 2 by being sucked through the outlet 212. Therefore, the shape of the rigid container portion 2 is more preferably cylindrical so that it can withstand the load. Hereinafter, taking as an example the rigid container portion 2 in which the outlet 212 is provided at the lower part of the container body portion 21, the inlet 221 is provided at substantially the center of the container lid portion 22, and its shape is cylindrical, the container body portion 21 and the container lid portion 22 will be described.

[0017] (1-1) Container body portion 21 A typical structure of the container body portion 21 is shown in FIG. 2(a). As described above, the outlet 212 is provided at the lower part of the container body portion 21. The outlet 212 can be connected to a pipe and is connected to the suction means via the pipe. When the container body portion 21 and the container lid portion 22 are fastened by fixing means 23, for example, bolts 232 and nuts 231, for example, a contact portion 213 with the container lid portion 22 may be provided at the upper end of the container body portion 21, and a screw hole 214 may be formed in the contact portion 213 (see FIG. 2(b)). The container body portion 21 has a cavity 215 for accommodating the bag body 3 described later (see FIG. 2(c)). On the inner side wall of the container body portion 21, hooks or the like for fixing the bag body 3 may be provided as necessary (not shown). In addition, in order to make the pipe connection work proceed more smoothly, an outlet pipe 216 may be provided in the outlet 212 in advance (see FIG. 2(d)). The outlet pipe 216 can be subjected to any processing conventionally used, such as threading, for connecting the pipe. Note that the internal capacity of the container body portion 21 can be appropriately adjusted according to the collection target or the like. For example, by setting the internal capacity of the container body portion 21 to 1000 l or more, specifically 1000 to 2000 l, a larger amount of collection target can be collected.

[0018] The container main body 21 may have at least one protrusion 217 on its inner wall as required (see Fig. 3(a)). The protrusion 217 has at least one hole 217a passing through the protrusion 217 (see, for example, Fig. 3(b)). The size and number of the protrusions 217, the position on the inner wall of the container main body 21, and the size and number of the holes 217a, etc. can be appropriately changed based on the size of the container main body 21, the type and size of the bag body 3 accommodated in the container main body 21, the type of the object to be collected, etc. By providing the protrusions 217, as shown in Fig. 3(c), the protrusions 217 prevent the bag body 3 from sticking to the inner wall of the container main body 21 and create a gap 218 between the bag body 3 and the inner wall of the container main body 21. The gap 218 communicates through the holes 217a of the protrusions 217. Therefore, due to the gap 218 formed around the protrusions 217, a filtration area is ensured, so that sludge with high viscosity can be sucked and collected with higher efficiency compared to the case where the protrusions 217 are not provided.

[0019] Note that, as shown in Fig. 4(a), the protrusion 217 may form a ring along the inner wall shape of the container body 21. The shape of the ring is the shape along the shape of the rigid container part 2. For example, when the protrusion 217 forms a ring and the shape of the rigid container part 2 is cylindrical, the shape of the protrusion 217 is a circular ring (see Fig. 4(a)). Also, when the protrusion 217 forms a ring and the shape of the rigid container part 2 is polygonal columnar, for example, quadrangular columnar, the shape of the protrusion 217 is a quadrangular ring (not shown). Further, as shown in Fig. 4(b), a plurality of annular protrusions 217 may be provided. By increasing the number of the annular protrusions 217 in this way, while creating more gaps 218 to prevent a decrease in filtration efficiency (see Fig. 4(c)), it is possible to further improve the durability of the rigid container part 2. Also, when a plurality of annular protrusions 217 are provided, since the durability of the rigid container part 2 can be further improved, it is more preferable that each protrusion is in a substantially horizontal direction (for example, each protrusion 217 is substantially perpendicular to the inner wall of the container body 21 and substantially parallel to the bottom surface of the container body 21), and each protrusion 217 is substantially parallel to each other. Note that when the protrusion 217 is in the shape of a ring, the number of rings, the thickness and width of the ring, the size of the holes 217a formed in the protrusion 217, and the number of the holes 217a, etc. can be appropriately changed based on the size of the container body 21, the type of the object to be collected, the type and size of the bag body 3 accommodated in the container body 21, the durability required for the container body 21, etc.

[0020] The protrusion 217 can be manufactured, for example, from a metal material such as iron, steel, stainless steel, or a synthetic resin material. There is no particular limitation on the method of providing the protrusion 217 inside the container main body 21. For example, it can be fixed by any conventional fixing method such as welding, adhesion using an adhesive, etc., and screwing. However, as described above, it is preferable that the rigid container part 2 is sealed as much as possible. Further, it is preferable that the protrusion 217 can surely create the gap 218 and is more firmly fixed so as to have a higher resistance to the reduced pressure. Therefore, for example, when the rigid container part 2 is made of iron and / or steel, it is more preferable to fix the protrusion 217 made of a metal material to the inner wall of the container main body 21 by welding.

[0021] The container main body 21 preferably has a barrier 219 against the bag body 3 in front of the outlet 212 inside it as needed (see FIGS. 5(a) and (b)). The barrier 219 can be manufactured from, for example, a metal material such as iron, steel, stainless steel, or a synthetic resin material. There is no particular limitation on the method of fixing the barrier 219 to the container main body 21. For example, it can be fixed by any conventional fixing method such as welding, adhesion using an adhesive, etc., and screwing. However, as described above, it is preferable that the rigid container part 2 is sealed as much as possible, and it is preferable that the barrier 219 is firmly fixed so as to surely resist the pressure from the bag body 3. Therefore, for example, when the rigid container part 2 is made of iron and / or steel, it is more preferable to fix the barrier 219 made of a metal material to the inner wall of the container main body 21 by welding. Also, as shown in FIG. 5(e), the barrier 219 can be more firmly fixed inside the container main body 21 by supporting the upper part of the barrier 219 with the protrusion 217 provided on the side wall of the container main body 21.

[0022] Furthermore, a spacer 24 may be provided on the inner bottom surface of the container body portion 21 of the harder container portion 2 to prevent the bottom portion of the bag body 3 from contacting the bottom surface of the container body portion 21. As a specific form of the spacer 24, for example, as shown in FIGS. 6(a) to 6(c), it may include at least two leg portions 241, 241 extending in the vertical direction from the bottom surface of the container body portion 21 and a mesh portion 242 installed on the leg portions 241, 241. For example, when collecting an object to be collected such as sludge containing liquid is suctioned, the bottom portion of the bag body 3 may contact and stick to the bottom portion of the container body portion 21, causing the mesh at the bottom of the bag body 3 to be blocked, and the filtration area of the bag body 3 to decrease, resulting in a decrease in the suction efficiency. By providing the spacer 24 as described above, it is possible to prevent the bottom portion of the bag body 3 from directly contacting the bottom surface of the container body portion 21, and at the same time, the mesh of the mesh portion 242 does not excessively reduce the filtration area of the bag body 3.

[0023] However, when the amount of the object to be suctioned is large, for example, when it reaches the level of several hundred kilograms to several tons, the spacer 24 as described above may not be able to withstand such a large mass in some cases. In such a case, as shown in FIGS. 6(d) to 6(f), it is more preferable that the spacer 24 includes at least two leg portions 241, 241 and a ladder portion 243 spanned across the leg portions 241, 241. By configuring the spacer 24 as described above, even when the mass of the object to be collected collected in the bag body 3 increases, the ladder structure of the ladder portion 243 can withstand the mass without excessively reducing the filtration area.

[0024] The spacer 24 as described above can be manufactured, for example, from a metal material such as iron, steel, stainless steel, or a synthetic resin material. Also, the spacer 24 as described above may be provided only one on the bottom of the container body portion 21, or two or more may be provided.

[0025] (1-2) Container lid portion 22 FIG. 7 is a drawing showing one form of the container lid portion 22. As described above, in this form, an inlet 221 capable of connecting a pipe is provided at approximately the center of the container lid portion 22. By the suction force through the outlet 212, the object to be collected can be suctioned and collected using the pipe connected to the inlet 221. A viewing window 222 may be provided in the container lid portion 22. The viewing window 222 is, for example, a transparent window made of glass or resin provided in a part of the container lid portion 22. By providing such a viewing window 222, the amount of the object to be collected filled in the bag body 3 can be visually confirmed without removing the container lid portion 22 from the container main body portion 21. When it is visually confirmed that the bag body 3 is full of the object to be collected, the suction and collection operation can be temporarily interrupted, the container lid portion 22 can be removed from the container main body portion 21, and the bag body 3 filled with the object to be collected can be replaced with a new bag body 3.

[0026] An air wiper 223 may be provided near the viewing window 222. The air wiper 223 is composed of a pipe 223a extending from the surface of the container lid portion 22 to the back surface of the viewing window 222, an opening / closing valve 223b provided in the pipe, and a cock 223c (see FIGS. 7(a) to 7(c)). A pressure gauge 224 may be provided in the container lid portion 22. Further, when the container main body portion 21 and the container lid portion 22 are fastened by fixing means 23, for example, bolts 232 and nuts 231, it is preferable to form screw holes 226 in the container lid portion 22, for example. In addition, in order to make the pipe connection work proceed more smoothly, an inlet pipe 227 may be provided in the inlet 221 in advance (see FIG. 7(d)). The inlet pipe 227 can be subjected to any processing conventionally used, such as threading, for connecting the pipe.

[0027] As described above, it is preferable that the container body portion 21 and the container lid portion 22 can be sealed as tightly as possible. Therefore, it is preferable that a packing made of an elastic material is provided on the surfaces where the container body portion 21 and the container lid portion 22 come into contact. Examples of the elastic material include natural rubber, synthetic rubber, and the like. The packing can be provided only on the container body portion 21 side, only on the container lid portion 22 side, or on both the container body portion 21 side and the container lid portion 22 side.

[0028] (2) Bag body 3 The bag body 3 of the present invention is a bag body having a mesh and is used by being housed inside the rigid container portion 2. The bag body 3 has an opening for receiving the object to be collected sucked through the inlet 221. The size of the opening can be appropriately changed based on the size of the rigid container portion 2, the type of the object to be collected, and the like. In the present invention, "mesh" means holes in a sheet such as cloth through which liquids such as air and water and fine particles can pass. Therefore, the "mesh" in the present invention includes not only the meshes formed when threads, cloth, shredded resin sheets, etc. are woven together, but also the gaps between the entangled fibers in non-woven fabrics. The size of the mesh can be appropriately changed based on the type of the object to be collected, the size of the particles contained in the object to be collected, and the like. The material of the bag body 3 may be any material as long as it can withstand the weight of the object to be collected housed therein. Examples of these materials include not only natural materials such as cotton and hemp, but also synthetic resin materials such as polypropylene and polyethylene.

[0029] Also, the bag body 3 is preferably flexible. Since the bag body 3 is flexible, it can be stored compactly before using the bag body 3. Also, since the bag body 3 is flexible, it can be handled more easily when transporting the bag body 3 filled with the object to be collected. Furthermore, by using the flexible bag body 3 and the container body portion 21 provided with the protrusion 217 together, the gap 218 can be created more easily, so that the efficiency of the suction / collection operation can be further increased.

[0030] As a preferable example of the bag body 3, for example, a flexible container bag can be mentioned. The flexible container bag is a bag body mainly made of a mesh fabric of a synthetic resin material. Further, it is generally easily available, and many of them are provided with handles or the like for hanging with a crane or the like. Furthermore, the flexible container bag has appropriate flexibility suitable for use as the bag body 3 of the present invention. Therefore, the flexible container bag is suitable for use as the bag body 3 of the present invention.

[0031] The mesh holes of the bag body 3 of the present invention are blocked at its upper part. Here, the "upper part of the bag body 3" means at least a part of the upper side of the bag body 3 that is housed in the container main body part 21. Specifically, for example, as shown in Fig. 8(a), when the bag body 3 is housed in the container main body part 21 and its upper side is sandwiched and held between the container main body part 21 and the container lid part 22, at least the upper part of the bag body 3 housed inside the container main body part 21 from the location in contact with the container main body part 21 (the region indicated by the thick line of the bag body 3 in Fig. 8(a)) is referred to. In this case, for example, about 10 to 50% of the upper part at the height (h in Fig. 8(a)) of the bag body 3 housed in the container main body part 21 serves as a guide for the above-mentioned "upper part".

[0032] By blocking the holes of the mesh at the upper part of the bag body 3, the following effects are produced. When using the bag body 3 with the upper holes not blocked as described above and sucking, for example, sludge having a viscosity of a certain level or more containing liquid, when a certain amount or more of sludge P is sucked as shown in Fig. 8(b), the part where the sludge P is accommodated is in a state where the mesh of the bag body 3 is filled, and the suction pressure generated by sucking from the outlet 212 becomes weak. On the other hand, since the upper part of the bag body 3 where the sludge P is not accommodated is held in a state where the holes of the mesh are open, more suction pressure leaks from the upper part of the bag body 3, and the force to filter and suck the liquid from the sludge P becomes weaker (refer to the dotted arrow in Fig. 8(b)). As described above, by blocking the holes of the mesh at the upper part of the bag body 3, even when a certain amount or more of sludge P is sucked, it is possible to avoid the generation of pressure loss from the upper part of the bag body 3 as much as possible, and the efficiency of sucking and filtering the liquid from the sucked collection target can be further increased (refer to Fig. 8(c)). Means for blocking the holes include, for example, applying and drying an adhesive or paint containing resin.

[0033] Further, when the bag body 3 is a flexible container bag, the holes of the mesh may be blocked by a gas-impermeable film 35 provided at the upper inner part of the flexible container bag. Examples of such a film 35 include, for example, a film made of synthetic resin, such as a film made of vinyl chloride or nylon. As a method of providing the film 35, for example, the upper end of the strip-shaped film 35 and the upper end of the bag body 3 may be connected with an adhesive or the like, and the film 35 may be provided by hanging it like a curtain inside the bag body 3 (refer to Fig. 8(d)). By providing the film 35 in this way, the holes at the upper part of the bag body 3 can be simply blocked. Also, even when the film 35 is damaged and the suction efficiency decreases, the damage of the film 35 can be easily confirmed visually, and the above-mentioned function can be easily restored by replacing the film 35 with a new one.

[0034] 2. Suction and Collection System By combining the suction and collection device 1 of the present invention with a suction means, a suction and collection system can be constructed. Fig. 9 shows an example of the suction and collection system. In the suction and collection system of Fig. 9, a collection pipe 4 used by an operator when collecting an object to be collected is connected to the inlet 221 of the suction and collection device 1 of the present invention. A suction pipe 5 for connecting the vacuum car 6, which is a suction means, and the suction and collection device 1 is connected to the outlet 212 of the suction and collection device 1. The suction and collection system described in Fig. 9 is suitable, for example, not only when sucking and collecting solids that do not contain liquid, such as gravel or powder, but also when sucking and collecting a mixture of liquid and solid, such as sludge.

[0035] The specific operation is as follows. By operating the vacuum car 6, the vacuum car 6 sucks the inside of the suction and collection device 1 through the suction pipe 5. Due to the suction force through the suction and collection device 1, the object to be collected is sucked from the inlet 41 of the collection pipe 4. The object to be collected sucked by the collection pipe 4 reaches the bag body 3 arranged inside through the inlet 221 of the suction and collection device 1. The air and / or liquid contained in the object to be collected (in some cases, a mixture of fine particles that have passed through the mesh and liquid) is filtered by the mesh of the bag body 3 and sucked out from the outlet 212. The sucked air and / or liquid (in some cases, a mixture of fine particles that have passed through the mesh and liquid) is collected by the vacuum car 6 through the suction pipe 5. Therefore, only the solid object to be collected remains inside the bag body 3. When the bag body 3 is filled with the object to be collected, the container lid part 22 is removed from the container main body part 21, and the bag body 3 filled with the object to be collected is taken out from the container main body part 21. Then, a new bag body 3 is put into the container main body part 21, and the collection work is restarted. By doing so, the collection of the object to be collected can be continuously carried out with very high efficiency.

[0036] Hereinafter, the present invention will be described in more detail with reference to examples. Needless to say, the examples do not affect the scope of the present invention.

Examples

[0037] 1. Equipment used in the test (1) A suction and collection device made of steel (inner diameter × height of the container body part: 140 × 105 cm, capacity 1615 l) with three annular protrusions inside and two spacers 24 shown in FIGS. 6(d) to (f) on the bottom surface of the container body part (see FIG. 10). (2) Absorbent sponges (soft urethane foam manufactured by Fuji Rubber Industry Co., Ltd., 31 cm × 20 cm × 2.5 cm: 50 pieces, 31 cm × 15 cm × 5.5 cm: 330 pieces) (3) 200 l drum cans (4) Vacuum cleaner truck (manufactured by Mitsubishi Fuso Truck and Bus Corporation, model: PDG - FK71R) (5) Flexible container bag (manufactured by Fujii Shokai Co., Ltd., product name TG - 001A, inner diameter × height: 140 cm × 140 cm) (6) Nylon resin sheet (manufactured by Tochisen Kasei Kogyo Co., Ltd., polyethylene bag 0.08 mm × 2200 mm × 1600 mm)

[0038] 2. Adjustment before the test Two flexible container bags were prepared. One was used as it was. A nylon resin sheet cut to a size of length × width: 40 × 460 cm was adhered to the other flexible container bag, and a skirt was attached to close the hole at the upper part of the flexible container bag (40 cm from the contact point between the container body part and the flexible container bag) (see FIG. 11). (Hereinafter, the flexible container bag with the skirt is simply referred to as "skirt - attached").

[0039] 3. Test method (1) A flexible container bag was placed inside the container body part of the suction and collection device, and a drum can was installed at its center. (2) A total of 380 absorbent sponges were stacked around the drum can (see FIG. 12). (3) With the outlet of the container body part closed, 730 liters of water was put into the container body part and left standing for 20 minutes. (4) After standing, the outlet was opened and natural drainage was carried out for 60 minutes. (5) After natural drainage, connect the pipe of the vacuum cleaner to the outlet, and perform suction for a predetermined time (10 minutes, 20 minutes, or 30 minutes) to adjust the initial amount of water (suction pressure -0.005 mPa) (hereinafter referred to as "the first suction"). (6) After performing the first suction for a predetermined time, drain the water and perform the main suction (suction pressure -0.005 mPa). The main suction time was the same as the time for the first suction (that is, if the suction time for the first suction was 10 minutes, the main suction time was also 10 minutes). (7) After the main suction, measure the amount of water sucked into the tank of the vacuum cleaner. (8) The above tests were repeated 4 times each for the case of using a normal flexible container bag and the case with a skirt, and the average values were calculated.

[0040] 4. Test Results The results of the above tests are shown in Table 1 below. Table 1 shows the amount of water sucked in each case of with a skirt (Example) and without a skirt (Comparative Example).

Table 1

[0041] As shown in Table 1 above and Figure 13 which is a graph of Table 1, compared with a normal flexible container bag without a skirt, about twice as much water was sucked in the case with a skirt which is the example. From the above test results, it became clear that even when the volume of the suction and collection device is very large, a higher suction effect can be achieved by closing the hole at the upper part of the bag body.

Industrial Applicability

[0042] According to the present invention, there is provided a suction and collection device that can efficiently suck a large volume of water and separate moisture even when the suction target has a higher viscosity.

Explanation of Signs

[0043] 1: Suction and Collection Device 2: Rigid Container Part 21: Container main body, 211: Inlet, 211a: Induction pipe, 212: Outlet, 213: Contact part with the container lid, 214: Threaded hole, 215: Cavity, 216: Outlet pipe, 217: Protrusion, 217a: Hole in the protrusion, 218: Gap, 219: Barrier, 219a: Hole in the barrier 22: Container lid, 221: Inlet, 222: Peephole, 223: Air wiper, 223a: Pipe, 223b: On-off valve, 223c: Cock, 224: Pressure gauge, 226: Threaded hole, 227: Inlet pipe 23: Fixing means, 231: Nut, 232: Bolt 24: Spacer, 241: Leg part, 242: Mesh part, 243: Ladder part 3: Bag body 4: Collection pipe 5: Suction pipe 6: Vacuum car

Claims

1. A suction and collection device including a box-shaped rigid container part and a bag body having a mesh and accommodated in the rigid container part, wherein the rigid container part consists of a container lid part and a container main body part, in the container main body part, at its lower part, it has an outlet connected to a suction means via a pipe, in the upper part of the container main body part and / or the container lid part, it has an inlet to which a pipe can be connected, the holes of the mesh are blocked at the upper part of the bag body having a mesh, characterized in that it is a suction and collection device.

2. The suction and collection device according to claim 1, wherein the bag body is a flexible container bag, and the holes of the mesh are blocked by a gas-impermeable film provided at the upper inner part of the flexible container bag.

3. Furthermore, a spacer for preventing the bottom of the bag body from contacting the bottom surface of the container main body part is provided on the inner bottom surface of the container main body part, according to the suction and collection device of claim 1.

4. The suction and collection device according to claim 3, wherein the spacer includes at least two legs and a ladder part spanning the legs.

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