Work device

Abstract

To provide a work device capable of performing various operations by inserting various functional parts into a housing in an uninterrupted flow state.SOLUTION: A work device 1 has at least a housing 3 that is externally fitted onto a fluid pipe 2 in a sealed manner, a passage communicating the inside of the housing 3 with the outside, a valve body 4c that can open and close the passage, a gate valve device 4 having a ball 22, a work ball valve 20, and work members 47A to 47E as functional parts that can enter the housing 3 through the passage, and has sealed storage parts 4Sa, 4Sb in the passage located outside the valve body, where the work members 47A to 47E can wait.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a working device having at least a housing that hermetically fits a fluid pipe, a passage connecting the inside of the housing to the outside, a valve having a valve body that can open and close the passage, and a functional part that can enter the housing through the passage. [Background technology]

[0002] Conventionally, when performing work such as connecting an existing flow path through which water, gas, etc. flows with another flow path, for example, a housing is attached to the existing fluid pipe in a sealed manner, and a working valve device that can open and close the inside is attached to the tip of the housing. A drilling machine having a cutter and a drive unit is installed on the working valve device, and with the working valve open, the cutter is advanced by the drive unit to drill a part of the fluid pipe inside the housing under an uninterrupted flow condition.

[0003] When such a drilling machine is used to drill a portion of an existing fluid pipe, a chip collection device having a discharge pipe for discharging chips generated during drilling is attached in place of the drilling machine attached to the tip of the working valve device, and then the working valve is opened and the discharge pipe is inserted into the inside of the working valve device and the housing, so that chips scattered inside can be sucked in through a suction port formed at the lower end and discharged to the outside together with the fluid (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 2535896 (Pages 2 and 3, Figures 1 to 3) Summary of the Invention [Problem to be solved by the invention]

[0005] In the chip collection device described in Patent Document 1, chips scattered inside the housing are sucked in from the suction port of the discharge pipe inserted inside the housing, but depending on various conditions such as the cutting method of the fluid pipe and the type of fluid in the pipe, the chips may be scattered widely inside the housing, or may be concentrated in specific places such as the seat surface that has a large effect on sealing performance, or in specific places such as corners inside the housing, and the like. In such cases, in addition to the task of sucking in the chips, other tasks such as cleaning specific places and visually checking the inside of the housing may also be required.

[0006] However, when the flow is uninterrupted, the work that can be performed inside the housing is limited to a single process of suctioning the chips through the discharge pipe to the outside, which creates the problem that it is not possible to perform various tasks depending on the state of the remaining chips.

[0007] The present invention has been made in response to such problems, and aims to provide a working device that allows various functional parts to be inserted inside a casing in an uninterrupted flow state to perform a variety of tasks. [Means for solving the problem]

[0008] In order to solve the above problems, the working device of the present invention is A working device having at least a housing that hermetically fits a fluid pipe, a passage that connects the inside of the housing to the outside, a valve having a valve body that can open and close the passage, and a functional part that can enter the housing through the passage, The valve has a passage located outside the valve body, and is characterized in that it has a sealed container in which the functional part can wait. According to this feature, the functional part is stored in a storage section outside the valve body of the valve and kept waiting while maintained in a sealed state, and in this state the passage can be opened and the functional part can be inserted into the housing, so that various functional parts can be inserted inside the housing in an uninterrupted flow state to perform various tasks.

[0009] The housing has an extension portion that extends into the housing and has a tip at which the functional portion can be attached and detached, and the storage portion has a sealing portion that seals the extension portion so that it can be advanced and retreated. According to this feature, leakage of fluid from between the extending portion that moves back and forth and the housing portion can be prevented.

[0010] The housing has an extension portion at its tip which extends into the housing and to which the functional portion can be detached, and the accommodating portion is configured to be able to accommodate the tip of the extension portion and the functional portion in a sealed manner. According to this feature, the tip of the extension portion can be hermetically accommodated in the accommodation portion together with the functional portion, so that when the passage is opened, the functional portion can be inserted into the housing via the extension portion.

[0011] The valve is an operating valve having a valve body that movably houses the valve element, and the housing portion is formed within the valve body. According to this feature, it is easy to form the accommodation portion by utilizing the internal space of the valve body that accommodates the valve body of the operating valve.

[0012] The valve body is characterized in that an opening capable of opening and closing the accommodation portion is formed in the valve body. According to this feature, the housing portion can be opened widely, making it easier to access the functional portion housed in the housing portion.

[0013] The device is characterized in that a lid capable of closing the opening is provided, and a hole that can be opened and closed is provided in the lid. According to this feature, it is possible to visually check the condition inside the housing by opening the hole without removing the lid.

[0014] The cover portion is provided with an opening / closing valve through which the tip of the extension portion and the functional portion are removably inserted, and a passage located outside the valve body of the opening / closing valve has a sealed second storage portion in which the functional portion can wait. According to this feature, the tip of the extension portion is disposed in the housing portion outside the on-off valve, making it possible to attach and detach the functional portion.

[0015] The valve body has a flat upper surface. According to this feature, the functional part can be attached and detached by utilizing the upper surface of the valve body which is formed into a flat surface.

[0016] The valve is an on-off valve having a main body with the valve element rotatably mounted thereon, and the accommodating portion is formed outside the valve element of the on-off valve. According to this feature, it is possible to store the functional part in the storage part outside the on-off valve and keep it on standby.

[0017] The valve is an operating valve having a valve body that movably houses the valve element, and the housing portion is formed within a working cylinder that communicates with the valve body. According to this feature, since the accommodation portion can be formed in a working cylinder separate from the valve box, the size of the accommodation space can be set with a high degree of freedom.

[0018] The container is characterized in that an air vent is formed in the container. According to this feature, air can be easily removed when filling the container with fluid. [Brief description of the drawings]

[0019] [Figure 1] A partially cutaway front view showing a housing attached to a predetermined location on a fluid pipe, a gate valve device connected to the housing, and a drilling machine connected to the gate valve device. [Diagram 2] 2 is a partially cutaway front view showing a working device to which a work control unit is attached. FIG. [Diagram 3] FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG. 2. [Figure 4] 4 is a partially cutaway front view showing the working device in a state in which the working member of the discharge pipe is housed in the housing portion. FIG. [Diagram 5] 5 is an enlarged, partially cutaway view showing the main part of FIG. 4. [Figure 6]13 is a partially cutaway front view showing the working device during a discharge operation performed by the work control unit. FIG. [Figure 7] 13 is a partially cutaway front view showing the working device with the working member pulled up and accommodated in the accommodation section. FIG. [Figure 8] FIG. 4 is a partially cutaway front view showing the working device with the support pipe and the discharge pipe removed. [Figure 9] FIG. 1A shows the state in which the replaced working part is accommodated in the accommodation section and the support tube is attached to the upper connecting tube, and FIG. 1B shows the state in which the accommodation section is filled with fluid and air is being removed. [Figure 10] 1(a) to (e) are diagrams showing various working members. [Figure 11] FIG. 1A is a diagram showing a state in which the working member is removed from the discharge pipe, and FIG. 1B is a diagram showing a state in which a new working member is attached to the discharge pipe. [Figure 12] 1 is a partially cutaway front view showing the working device in a state in which the working lid has been removed from the valve body and a working member has been attached. FIG. [Figure 13] 13 is a cross-sectional view, partly cut away, showing the working device in a state in which the working member shown in FIG. 12 is performing an operation. [Figure 14] FIG. 2 is a diagram showing a low pressure suction unit. [Figure 15] 1 is a partially cutaway cross-sectional view showing a working device performing a discharge operation using a hose while checking with an imaging device serving as a working member. FIG. [Figure 16] FIG. 11 is a schematic diagram showing a working device as a modified example of the present invention. [Figure 17] FIG. 11 is a schematic diagram showing a working device as another modified example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A working device according to the present invention will be described below with reference to the following embodiments. EXAMPLES

[0021] A working apparatus 1 according to an embodiment of the present invention will be described with reference to Figures 1 to 13. In the following description, the near side of Figure 1 will be referred to as the front side (front face) of the working apparatus, and the far side will be referred to as the rear side (rear face).

[0022] An operating device 1 as an embodiment of the present invention is mainly composed of a housing 3 that hermetically fits over a specified portion of a fluid pipe 2 shown in Figure 1, a gate valve device 4 that can open and close a passage connecting the inside of the housing 3 with the outside, and an operation control unit 5 that controls the operation inside the housing 3 as shown in Figure 2, and is made into an apparatus capable of performing various operations associated with drilling the fluid pipe 2, such as discharging foreign matter C (see Figure 2) such as cuttings and rust generated by the drilling operation in which a drilling machine 7 drills a specified portion of the fluid pipe 2 covered by the housing 3, and inspecting the inside of the housing 3 with a camera or the like after the drilling operation.

[0023] In the following, a series of work steps are described in which, using a housing 3 and a gate valve device 4 which constitute part of the above-mentioned work apparatus 1, and a drilling machine 7 attached to the upper part of the gate valve device 4, a predetermined location of an existing fluid pipe 2, which is a pipeline component, is drilled inside the housing 3 under an uninterrupted flow condition, and then, using a work control unit 5, foreign matter C such as cutting chips and rust scattered inside the housing 3 as a result of the drilling is discharged to the outside of the housing 3.

[0024] In this embodiment, the fluid in the fluid pipe 2 is clean water, but it may be, for example, industrial water, agricultural water, sewage, or other liquid other than water, or may be gas or a gas-liquid mixture of gas and liquid. The fluid pipe 2 is a ductile cast iron pipe formed into a straight pipe having a substantially circular cross section. In this embodiment, the pipe direction of the fluid pipe 2 is disposed substantially horizontally. The fluid pipe according to the present invention may be made of other metals such as cast iron and steel, or made of concrete, vinyl chloride, polyethylene, polyolefin, or the like. Furthermore, the inner peripheral surface of the fluid pipe may be covered with an epoxy resin layer, mortar, plating, or the like, or the inner peripheral surface of the fluid pipe may be covered with an appropriate material by powder coating.

[0025] When performing drilling work on the fluid pipe 2, first, the housing 3 is attached to a predetermined location of the fluid pipe 2 in a hermetically sealed manner via a seal member (not shown). The housing 3 is composed of a lower housing 3a disposed at the bottom of the fluid pipe 2 and an upper housing 3b disposed at the top of the fluid pipe 2. The lower housing 3a is formed in a substantially T-shape when viewed from the front, having a bottomed cylindrical body 13a extending downward and curved plate-like half-split arm portions 14a, 14a that extend laterally and are substantially perpendicular to the body portion 13a and are curved in a semicircular arc when viewed from the axial direction of the fluid pipe 2, and hermetically covers the lower outer periphery of the fluid pipe 2 via a seal member (not shown). The upper housing 3b is formed in a substantially T-shape in front view, with a bottomed cylindrical body 13b extending upward, and curved plate-like half-split arms 14b, 14b extending laterally and substantially perpendicular to the body 13b, and curved in a semicircular arc shape as viewed in the axial direction of the fluid pipe 2, and hermetically covers the lower outer periphery of the fluid pipe 2 via a seal member (not shown). A flange 13c protruding in the outer diameter direction is formed on the periphery of the upper opening of the body 13b.

[0026] The housing 3 may be divided, for example, in the front-rear direction, or may be divided into a predetermined number of parts, such as three or more. In this embodiment, the divided parts are joined together in a sealed state by a plurality of fastening members (not shown) made of bolts and nuts, but the present invention is not limited to this and may be joined by welding, for example.

[0027] After the housing 3 is attached to the fluid pipe 2, the gate valve device 4 is connected in a sealed manner to the upper end opening of the body 13b. The gate valve device 4 has a cylindrical valve box 4a that penetrates in the vertical direction, a valve cover 4b that is formed so as to protrude rearward (toward the back of Fig. 1) from the valve box 4a and is connected to the valve box 4a via a communication port formed on the inner peripheral surface, a valve body 4c that is provided between the valve box 4a and the valve cover 4b so as to be movable in a substantially horizontal direction and has a flat upper surface, and a groove portion 4d that serves as a valve seat for receiving the valve body 4c. The groove portion 4d is capable of sealingly contacting the valve body 4c via a seal member 4g (see Fig. 5).

[0028] In addition, flanges 4e, 4f protruding in the outer diameter direction are formed on the upper and lower opening peripheries of the valve box 4a, and the lower flange 4e is fastened to the flange 13c of the body 13b with a plurality of fastening members 91 consisting of bolts and nuts arranged in the circumferential direction, thereby hermetically connecting the valve box 4a to the upper open end (opening) of the body 13b via a seal member (not shown). In addition, although not particularly shown, the end of a valve stem that is screwed with the valve element 4c inside the valve lid 4b protrudes from the tip of the valve cover 4b, and an operating handle is provided at the end of this valve stem, and the inside of the housing 3 can be opened and closed by rotating the operating handle to move the valve element 4c between the valve box 4a and the valve cover 4b.

[0029] In addition, an accommodation section 4Sa capable of accommodating working members 47A to 47E as functional sections described later is provided between the valve body 4c and the upper opening end of the valve box 4a. The inner diameter of the opening of the valve box 4a is approximately the same as the inner diameter of the opening of the housing 3.

[0030] Next, the drilling machine 7 is connected to the upper open end of the valve box 4a in a sealed state. The drilling machine 7 is mainly composed of a mounting flange tube 71, a cutter 72 for drilling the fluid pipe 2, a drive motor 74 for rotating the cutter 72 in the mounting flange tube 71, and an advance / retract mechanism 73 for moving the cutter 72 up and down. The cutter 72 is formed in a cylindrical shape with a larger diameter than the fluid pipe 2, and is composed of a hole saw 72a with a cutting blade along the circumferential direction at its tip (lower end in the figure), and a center drill 72b arranged coaxially with the rotating shaft 72c of the hole saw 72a and protruding beyond the cutting blade. The cutter 72 is arranged concentrically with the upper open end of the body 13b of the housing 3, and is inserted into the body 13b from the upper open end, and can advance at least to a position where it penetrates the pipe wall of the fluid pipe 2.

[0031] A flange 71a protruding in the outward radial direction is formed on the periphery of the lower opening of the mounting flange tube 71, and by fastening the flange 71a to the flange 4f of the valve box 4a with a plurality of fastening members 92 consisting of bolts and nuts arranged in the circumferential direction, the drilling machine 7 is hermetically connected to the upper opening end of the valve box 4a via a sealing member (not shown).

[0032] Furthermore, the order of connecting the gate valve device 4 to the upper opening end of the body 13b of the casing 3 and the operation of connecting the drilling machine 7 to the upper opening end of the valve box 4a is not necessarily limited to the order described above. The operation of connecting the drilling machine 7 may be performed after the operation of connecting the gate valve device 4, or these connection operations may be performed simultaneously in parallel, or the upper casing 3b, with the gate valve device 4 and the drilling machine 7 already connected, may be connected to the lower casing 3a.

[0033] (Drilling process of fluid pipes using a drilling machine) Next, a brief description will be given of the process of drilling the fluid pipe 2 by the drilling machine 7. As shown in Fig. 1, first, the valve body 4c of the gate valve device 4 is moved toward the valve cover 4b to open the inside of the housing 3. Next, while releasing air from an air release valve (not shown) provided at a predetermined location on the peripheral wall of the housing 3, the housing 3 is filled with fluid and water pressure approximately equal to that in the fluid pipe 2 is applied to check for leakage, and then, after confirming that the air in the housing 3 has been released, the air release valve (not shown) is closed.

[0034] Next, the cutter 72 is rotated around the rotation axis 72c by the drive motor 74 of the drilling machine 7, and the cutter 72 is advanced downward by the advance / retract mechanism 73, so as to drill a hole in the upper part of the peripheral wall of the fluid pipe 2 without interrupting the flow. This drilling generates foreign matter C such as cutting chips of the fluid pipe 2 and rust peeled off from the inner peripheral surface of the fluid pipe 2, which are scattered inside the housing 3 filled with fluid. Note that drilling may be performed by cutting or dividing a part of the pipe in the axial direction with a cutter 72 or the like having a larger diameter than the fluid pipe 2, as in this embodiment, or may be performed by forming a hole in the pipe wall with a cutter or the like having a smaller diameter than the fluid pipe 2.

[0035] When the fluid pipe 2 is perforated by the cutter 72, a cut piece (not shown) cut off from the fluid pipe 2 is held in the hole saw 72a. Thereafter, the cutter 72 is retracted into the mounting flange tube 71 together with the cut piece (not shown) by the advance / retract mechanism 73, and the valve body 4c of the gate valve device 4 is moved toward the recessed groove portion 4d to close the inside of the valve box 4a.

[0036] Foreign matter C produced by drilling is scattered in the fluid in the housing 3 near the cut portion, and then some of it is discharged by water pressure together with the fluid in the pipe from a drain port (not shown) provided at the bottom of the housing 3, but the rest gradually sinks by gravity over time and falls to the bottom of the housing 3, where it remains (see FIG. 2). Since there is a risk that the foreign matter C that has remained at the bottom of the housing 3 in this way will flow into the fluid pipe 2 due to the movement of the fluid, the mounting flange tube 71 is removed from the valve box 4a and the drilling machine 7 is removed, the operation control unit 5 is attached to the valve box 4a, and the operation control unit 5 is used to perform a discharge operation to discharge the foreign matter C to the outside.

[0037] (Work Control Unit) Next, the configuration of the operation control unit 5 will be described with reference to FIGS.

[0038] As shown in Figure 2, the work cover 31, the flexible pipe joint 37, the connecting pipe 15 including the work ball valve 20, the support pipe 41, and the discharge pipe 42 constitute an operation control unit 5 that controls the discharge operation of foreign matter C inside the housing 3, and the housing 3, the gate valve device 4 and the operation control unit 5 constitute the operation device 1.

[0039] After the drilling operation by the drilling machine 7 is completed, the work cover 31 as a cover is fastened to the flange 4f of the valve box 4a by a plurality of fastening members 93 consisting of bolts and nuts arranged in the circumferential direction, so that the upper open end of the valve box 4a is hermetically closed via the seal member 4h (see FIG. 5). The work control unit 5, which is an example of a working tool for discharging the foreign matter C, is hermetically connected to the upper part of the valve box 4a via the work cover 31. In addition, by closing the upper open end of the valve box 4a with the work cover 31, a storage section 4Sa is formed between the valve body 4c in the valve box 4a and the work cover 31, that is, below the work cover 31.

[0040] The work cover 31 is formed in a disk shape as shown in Fig. 3, and a circular insertion hole 32 is formed at the center thereof, penetrating vertically. A plurality of (four in this example) confirmation windows 33a to 33d are formed around the insertion hole 32 at equal intervals in the circumferential direction as circular holes penetrating vertically and having a slightly smaller diameter than the insertion hole 32. A light-transmitting acrylic plate 35 is hermetically attached to each confirmation window 33a to 33d via a sealing member (not shown), and the confirmation windows 33a to 33d are closed so that the inside of the valve box 4a can be visually observed through the acrylic plate 35. The acrylic plate 35 is detachably attached to the confirmation windows 33a to 33d.

[0041] Further, a plurality of small holes 34a to 34d (four in this example) are formed between the respective check windows 33a to 33d, penetrating vertically. The small holes 34a to 34d are used for injecting fluid into the valve box 4a and for providing an air vent valve 36 for venting air when injecting water.

[0042] 2, a rubber flexible pipe joint 37 is hermetically connected to the center of the upper surface of the working lid 31 via a seal member (not shown), and communicates with the inside of the valve box 4a via an insertion hole 32. Flanges 37a, 37b protruding in the outer diameter direction are formed on the upper and lower opening peripheries of the flexible pipe joint 37, and the lower flange 37a is fastened to the working lid 31 by a plurality of fastening members 94 consisting of bolts and nuts arranged in the circumferential direction, whereby the flexible pipe joint 37 is hermetically connected to the working lid 31 via the seal member (not shown).

[0043] Above the flexible pipe joint 37, the connecting pipe 15 is connected in a hermetically sealed manner via a seal member (not shown) and communicates with the inside of the flexible pipe joint 37. Flanges 15a, 15b protruding in the outward radial direction are formed on the upper and lower opening peripheries of the connecting pipe 15, and the lower flange 15a is fastened to the upper flange 37b of the flexible pipe joint 37 with a plurality of fastening members 95 consisting of bolts and nuts arranged in the circumferential direction, whereby the connecting pipe 15 is hermetically connected to the flexible pipe joint 37 via the seal member (not shown).

[0044] As shown in FIG. 5, the connecting pipe 15 is composed of a lower connecting pipe 15c, an upper connecting pipe 15d, and a work ball valve 20 as an opening / closing valve that is connected in a sealed manner between the lower connecting pipe 15c and the upper connecting pipe 15d via a seal member (not shown). The work ball valve 20 mainly includes a main body 21 having a through passage 21a penetrating in the vertical direction, a ball 22 as a valve body rotatably supported in the main body 21, an operating handle 23 for opening and closing the ball 22, and a nipple 24 screwed into the lower end of the main body 21. The inner diameter dimension L5 of the through passage 21a of the work ball valve 20 is smaller than the inner diameter dimensions of the openings of the housing 3 and the valve box 4a. FIG. 2 shows the work ball valve 20 in a closed state, and FIG. 5 shows the work ball valve 20 in an open state.

[0045] 2, above the connecting pipe 15, the support pipe 41 is hermetically connected via a seal member (not shown) and communicates with the inside of the connecting pipe 15. A flange 41a protruding in the outward radial direction is formed on the periphery of the lower opening of the support pipe 41, and by fastening the flange 41a to the upper flange 15b of the connecting pipe 15 with a plurality of fastening members 96 consisting of bolts and nuts arranged in the circumferential direction, the support pipe 41 is hermetically connected to the connecting pipe 15 via a gasket 25 (see FIG. 5).

[0046] A discharge pipe 42 serving as an extension made of a metal material extending in the vertical direction is inserted inside the support pipe 41 in a movable manner and sealed state via an O-ring 26 provided on the inner peripheral surface of the flange 41a (see FIG. 5). A ball valve 43 is provided at the upper end of the discharge pipe 42. A flexible hose 48 is connected to the tip of the ball valve 43. A reel 45 is attached to the lower part of the support pipe 41 for winding up a wire rope 44, one end of which is fastened to the upper part of the discharge pipe 42, and a handle 46 for gripping the discharge pipe 42 is attached to the upper part of the discharge pipe 42.

[0047] A working member 47A, which serves as a functional part having a generally cylindrical shape and a suction port 47a (see FIG. 5) for sucking in foreign matter C, is removably attached to the lower end of the discharge pipe 42. As shown in FIG. 10(a), the working member 47A is formed in a cylindrical shape, and semicircular cutouts 47h, 47h are formed on the front and rear sides of the tip (lower end). The suction port 47a of the working member 47A has a tip that is concavely curved in a front view (left view of FIG. 10(a)) and flat in a side view (right view of FIG. 10(a)).

[0048] If the tip of the cylindrical working member 47A is flat, the lower end opening becomes the suction port 47a, and as described below, when the tip is brought close to foreign matter C accumulated (stacked) on the bottom of the housing 3, the suction port 47a may become narrow and blocked depending on the inclination of the tip, making it difficult to move the discharge pipe 42 or preventing the suction of large granular foreign matter C. Therefore, by providing notches 47h, 47h on the circumferential surface as in the working member 47A to ensure a large suction port 47a, when the tip of the working member 47A is brought close to the bottom of the housing 3, suction can be performed not only from the bottom side but also from the circumferential side, making it easier to suction the foreign matter C.

[0049] 10(a), the inner diameter R2 of the notches 47h, 47h is larger than the inner diameter R1 of the working member 47A, so that the combined area of ​​the projected area A2 of the suction port 47a when viewed from the front side of the working member 47A and the projected area A2 of the suction port 47a when viewed from the rear side of the working member 47A is equal to or larger than the area A1 of the suction port 47a when viewed from below the working member 47A. This prevents the suction force inside the working member 47A from being attenuated by the notches 47h, 47h.

[0050] In addition, the working member 47A is detachable by screwing a female thread formed on the inner peripheral surface of the working member 47A into a male thread formed on the outer peripheral surface of the lower part of the discharge pipe 42, but it may be detachable by press-fitting, using a screw member, a locking member, etc. The working member 47A attached to the lower end of the discharge pipe 42 can be replaced or substituted with various working members 47B to 47E (see Figures 10(b) to 10(e)) described below.

[0051] For example, as shown in Fig. 10(b), the working member 47B performs the operation of sweeping out and suctioning foreign matter C by using an inclined plate 47b at the tip, and the inclined plate 47b has a suction port 47c and is bent toward the side. As shown in Fig. 10(c), the working member 47C performs the operation of sweeping out and suctioning foreign matter C by using a wire brush 47d at the tip, and the wire brush 47d is arranged in two rows on either side of the suction port 47e, inclined toward the tip of the working member 47C. As shown in Fig. 10(d), the working member 47D performs the operation of dropping and suctioning foreign matter C by using a plate rubber 47f at the tip, and the plate rubber 47f is formed wider than the outer diameter dimension of the discharge pipe 42, and is suitable for the purpose of dropping foreign matter C attached to the sheet surface inside the housing 3 and for the purpose of cleaning foreign matter contained in sewage treatment water. 10(e), the working member 47E has a magnet 47g at its tip for attracting foreign matter C, and the magnet 47g is formed in a substantially circular shape concentric with the discharge pipe 42, and is suitable for attracting chips when the fluid is gas. These working members 47A-47E constitute the functional part of the present invention. The shapes, functions, types, etc. of these working members 47A-47E can be changed in various ways, and they may be replaced or exchanged with working members other than those mentioned above.

[0052] In addition, the outer diameter dimension L1a of the working member 47A, the maximum outer dimension L1b of the working member 47B, and the maximum outer dimension L1c of the working member 47C are smaller than the inner diameter dimension L6 of the confirmation windows 33a to 33d, so that the working member can be inserted and removed through the confirmation windows 33a to 33d to attach and detach the working member to the discharge pipe 42.

[0053] The longitudinal dimension of the discharge pipe 42 is designed to be such that the working member 47A can reach near the bottom when inserted into the housing 3 as described later (see FIG. 6). As shown in FIG. 5, the outer diameter L1a of the working member 47A is the smallest, and the inner diameter L5 of the working ball valve 20, the inner diameter L4 of the connecting pipe 15, the inner diameter L6 of the confirmation windows 33a to 33d, the inner diameter L3 of the flexible pipe joint 37, and the inner diameter L2 of the insertion hole 32 formed in the working lid 31 are formed to be gradually larger in this order (L1a <L5<L4<L6<L3<L2)。

[0054] Therefore, the working member 47A can be drawn from the accommodation section 4Sa through the insertion hole 32, the flexible joint 37, the lower connecting pipe 15c, the working ball valve 20, and into the upper connecting pipe 15d above the work ball valve 20. In other words, the passages in the flexible joint 37, the lower connecting pipe 15c, the work ball valve 20, and the upper connecting pipe 15d, which communicate with the accommodation section 4Sa formed in the valve box 4a through the insertion hole 32, can pass the discharge pipe 42 and the working member 47A attached to the lower end of the discharge pipe 42, and can also accommodate the working member 47A, constituting the accommodation section 4Sb of the present invention. These accommodation sections 4Sa and 4Sb have an O-ring 26 (see FIG. 5) as a sealing section that seals the discharge pipe 42 so that it can be advanced and retreated.

[0055] Although discharge pipe 42 and working member 47A are made of metal, the material may be any material as long as the material maintains a substantially linear shape in the longitudinal direction, and may be variously changed to vinyl chloride, etc. Also, at least a part of the tip of discharge pipe 42 and working member 47A may be made of a flexible tube made of rubber, which can prevent damage to the inner peripheral surface of housing 3.

[0056] (Discharge of foreign matter) Next, the operation of discharging the foreign matter C will be described. As shown in Fig. 2, after the drilling operation is completed and the drilling machine 7 is removed from above the gate valve device 4, a work cover 31 is attached to the upper end opening on the upper side of the valve box 4a, and a work control section 5 consisting of a flexible pipe joint 37, a connecting pipe 15 including a work ball valve 20, a support pipe 41, and a discharge pipe 42 is connected in a sealed state above the work cover 31. In this state, the work ball valve 20 is in a closed state, and a work member 47A is accommodated in the accommodation section 4Sb consisting of the upper connecting pipe 15d above it.

[0057] 4, by opening the work ball valve 20, the discharge pipe 42 and the working member 47A attached to its lower end can be passed through the ball 22 of the work ball valve 20. Then, when the handle 45a of the reel 45 is rotated to wind up the wire rope 44, the working member 47A at the tip of the discharge pipe 42 moves downward and is stored in the storage section 4Sa. In this state, the multiple fastening members 96 fastening the flange 41a of the support pipe 41 to the upper flange 15b of the connecting pipe 15 are loosened (see Figure 9 (b)), and the air bleed valve 36 provided on the work lid 31 is opened to bleed the air, while filling the accommodating section 4Sa, the flexible pipe joint 37, the connecting pipe 15 including the work ball valve 20, and the discharge pipe 42 with fluid and applying water pressure approximately the same as that in the fluid pipe 2 to check for leakage. After confirming that the air has been bled from the accommodating sections 4Sa and 4Sb, the fastening members 96 are tightened and the air bleed valve 36 is closed.

[0058] 6, the valve body 4c of the gate valve device 4 is moved toward the valve cover 4b to open the passage in the valve box 4a, and the inside of the housing 3 is opened. In addition, by opening the upper ball valve 43, the housing 3 and the outside are communicated through the passages in the valve box 4a, the flexible pipe joint 37, the connection pipe 15, the working ball valve 20, and the discharge pipe 42, and the fluid in the housing 3 and the valve box 4a is discharged from the ball valve 43 to the outside through the hose 48, and the pressure that the discharge pipe 42 receives from the fluid is reduced, so that the discharge pipe 42 can be smoothly inserted toward the inside of the housing 3. Note that, when the water pressure of the fluid in the fluid pipe 2 is low, the discharge pipe 42 may be inserted manually without providing the wire rope 44, the reel 45, or the like.

[0059] Then, when the working member 47A at the tip of the discharge pipe 42 reaches the bottom of the housing 3, the accumulated foreign matter C is sucked in together with the fluid through the suction port 47a (see FIG. 10(a)) of the working member 47A, passes through the inside of the discharge pipe 42, and flows together with the fluid into the hose 48 from the ball valve 43. The foreign matter C is then captured by the foreign matter collector 49 attached to the tip of the hose 48, and only the fluid is discharged outside the foreign matter collector 49. The foreign matter collector 49 is composed of a cylindrical container having a fine-mesh opening connected to the tip of the hose 48, and is capable of storing the foreign matter C inside the cylindrical container and discharging only the fluid to the outside.

[0060] 6, while visually checking the inside of the housing 3 through the confirmation windows 33a to 33d, the worker can move the working member 47A at the tip of the discharge pipe 42 over almost the entire area along the bottom of the housing 3, thereby evenly sucking in the foreign matter C that has accumulated at the bottom. After starting the suction and discharge operation of the foreign matter C, the worker lifts the discharge pipe 42 upward when the foreign matter C is no longer confirmed in the housing 3 by visual inspection through the confirmation windows 33a to 33d or by confirmation using an imaging device (not shown, for example, see imaging device 89 shown in FIG. 15), or when there is no foreign matter C mixed in the fluid discharged from the foreign matter recovery device 49 or the amount of foreign matter C mixed in is very small.

[0061] When finishing the discharge operation of the foreign object C, the working member 47A at the tip of the discharge pipe 42 is pulled upward above the ball 22 which is the valve body of the working ball valve 20 in the accommodating part 4Sb, and is accommodated in the accommodating part 4Sb in the upper connecting pipe 15d. Then, the working ball valve 20 is closed to close the passage, and the inside of the housing 3 is set in a closed state (see Fig. 7). In addition, when installing a flow control valve or the like inside the housing 3, then, the valve body 4c of the partition valve device 4 is moved to the valve box 4a side to be in a closed state. After that, by removing the support pipe 41 from the upper connecting pipe 15d and removing the discharge pipe 42, the discharge operation of the foreign object C is completed (see Fig. 8).

[0062] Next, after finishing the discharge operation of the foreign object C by the working member 47A, the case of replacing the working member 47A with the working members 47B and 47C to continuously perform another operation (for example, the operation of sweeping out the foreign object C using the working members 47B and 47C) will be described. In the following, the case of replacing the working member 47A with the working member 47C will be described, and the description of the case of replacing it with the working member 47B will be omitted.

[0063] First, when the outer diameter dimensions L1a to L1c of the working members 47A to 47C are smaller than the inner diameter dimension L5 of the through passage 21a of the working ball valve 20 (L1a to L1c < L5), the working member 47A can be passed through the through passage 21a of the working ball valve 20 and pulled upward to the accommodating part 4Sb in the upper connecting pipe 15d for accommodation. Therefore, in this case, for example, as shown in Fig. 7, after pulling up the discharge pipe 42 and the working member 47A above the ball 22 which is the valve body of the working ball valve 20 in the accommodating part 4Sb and accommodating them in the accommodating part 4Sb in the upper connecting pipe 15d, the housing 3 can be easily set in a closed state by only rotating the ball 22. Thereby, as shown in Fig. 8, by removing the support pipe 41 from the upper connecting pipe 15d, the working member 47A can be extracted from the accommodating part 4Sb together with the discharge pipe 42.

[0064] Next, the working member 47A is removed from the tip of the discharge pipe 42 pulled out from the housing section 4Sb, and another working member of a size that can be accommodated in the housing section 4Sb, for example, a working member 47C is attached to the tip of the discharge pipe 42 to replace the working member. Then, as shown in FIG. 9(a), the working member 47B attached to the tip of the discharge pipe 42 is inserted into the housing section 4Sb in the upper connecting pipe 15d, the flange 41a of the support pipe 41 is placed on the upper flange 15b of the connecting pipe 15, and multiple fastening members 96 are loosely attached. Next, as shown in FIG. 9(b), the work ball valve 20 is slightly opened to allow fluid to enter the housing section 4Sb. Thereafter, air is bled from the housing section 4Sb by the fluid leaking from the gap 110 (air bleed section) between the flange 41a of the support pipe 41 and the upper flange 15b of the connecting pipe 15, and when it is confirmed that the housing section 4Sb is filled with fluid, each fastening member 96 is tightened. As a result, the housing portion 4Sb is sealed via the gasket 25 between the flange 41a of the support pipe 41 and the upper flange 15b of the connection pipe 15, and the O-ring 26 provided on the inner circumferential surface of the flange 41a.

[0065] Next, the work ball valve 20 is further opened, and when the presence or absence of water leakage can be confirmed by applying water pressure approximately equal to that in the fluid pipe 2, the handle 45a of the reel 45 is rotated to wind up the wire rope 44, and the work member 47C at the tip of the discharge pipe 42 is moved downward, and when it passes through the storage section 4Sa and reaches the inside of the housing 3, the wire brush 47d at the tip is used to sweep out the foreign matter C and the suction port 47e is used to perform suction. When the work is completed, the work member 47B is raised and stored in the storage section 4Sb, and the work ball valve 20 is closed to close the inside of the housing 3. Thereafter, depending on the discharge situation, the work members 47A to 47C may be replaced to perform another work, or the valve body 4c may be slid toward the valve box 4a to close the passage and close the housing 3 to end the work.

[0066] In this embodiment, the working member 47A is detachable from the tip of the discharge pipe 42, but if the working member 47A can be passed through the through passage 21a of the working ball valve 20 and pulled up to the upper connecting pipe 15d above, the working member 47A may be fixed integrally to the tip of the discharge pipe 42 by welding or the like. In this case, the tip of the discharge pipe is replaced with various types of discharge pipes to which the working member 47B or 47C is previously fixed.

[0067] Next, when the outer diameter dimensions L1a-L1c of the working members 47A-47C are larger than the inner diameter dimension L5 of the through passage 21a of the work ball valve 20 (L1a-L1c>L5), the working members 47A-47C cannot be pulled out through the through passage 21a of the work ball valve 20. Therefore, in this case, for example, as shown in Fig. 11(a), the working member 47A at the tip of the discharge pipe 42 is pulled up to the accommodation section 4Sa above the valve body 4c of the gate valve device 4 and accommodated therein, and the valve body 4c is moved toward the valve box 4a to close the passage, and the inside of the housing 3 is put into a closed state. Thereafter, with the tip of the discharge pipe 42 and the working member 47A attached to the tip still housed within the storage section 4Sa, the acrylic plate 35 attached to one or more of the confirmation windows 33a-33d is removed and placed on the upper surface of the valve body 4c, and the working member 47A is removed and retrieved from the tip of the discharge pipe 42 housed within the storage section 4Sa by inserting a tool or hand through the confirmation window 33a-33d.

[0068] 11(b), for example, the working member 47C is inserted into the inside of the accommodation portion 4Sa through the confirmation windows 33a to 33d and screwed into the tip of the discharge pipe 42 to be attached. In this state, the multiple fastening members 96 fastening the flange 41a of the support pipe 41 and the upper flange 15b of the connection pipe 15 are loosened (see FIG. 9(b)), and the air vent valve 36 provided on the work lid 31 is opened to vent the air, while filling the accommodation portion 4Sa, the flexible pipe joint 37, the connection pipe 15 including the work ball valve 20, and the discharge pipe 42 with fluid, and applying water pressure approximately equal to that in the fluid pipe 2 to check for leakage, and then, after confirming that the air has been vented from the accommodation portion 4Sa, the fastening members 96 are tightened and the air vent valve 36 is closed.

[0069] Next, the valve body 4c is moved toward the valve cover 4b to open the inside of the housing 3, and then the discharge pipe 42 is moved downward to insert the working member 47C into the inside of the housing 3, thereby performing the sweeping out and suctioning of the foreign matter C (see FIG. 6). After these operations are completed, the working member 47C at the tip of the discharge pipe 42 is raised up to the housing section 4Sa above the valve body 4c of the gate valve device 4 and accommodated therein, and the valve body 4c is moved toward the valve box 4a to close the inside of the housing 3 (see FIG. 4). For the sake of convenience, the embodiment in which the working member 47A is removed and replaced with the working member 47C is illustrated here, but it may also be replaced with the working members 47B, 47D, 47E, etc.

[0070] Also, as shown in Fig. 6, if the suction port 47a becomes clogged with foreign matter C such as chips during the suction and discharge operation of the foreign matter C by the working member 47A, as shown in Fig. 4, the working member 47A at the tip of the discharge pipe 42 is raised to the storage section 4Sa and stored therein, and then the valve body 4c is moved toward the valve box 4a to close the inside of the housing 3. Then, the acrylic plate 35 attached to one or more of the confirmation windows 33a to 33d is removed (see Fig. 11(a)), and the foreign matter C clogged in the suction port 47a can be removed by inserting a tool or hand through the confirmation window 33a to 33d. Next, the confirmation windows 33a to 33d are closed with the acrylic plate 35, and the valve body 4c is moved toward the valve cover 4b to open the inside of the housing 3, whereby the suction and discharge operation can be resumed.

[0071] In this way, by lifting the working member 47A up to the housing section 4Sb outside the ball 22 of the working ball valve 20 and housing it therein, the inside of the housing 3 can be closed by the ball 22, and the working member 47A can be removed from the upper connecting pipe 15d which is the housing section 4Sb, and replaced with other working members 47B, 47C, etc., or clogging of the suction ports 47a, 47c, 47e can be eliminated. After that, by housing the working members 47A to 47C again in the housing section 4Sb and making them wait, it becomes possible to apply water pressure approximately equal to that in the fluid pipe 2 to check for the presence or absence of water leakage before carrying out another task.

[0072] In addition, by lifting the working member 47A up to the accommodation section 4Sa outside the valve body 4c located at the closed position of the valve box 4a and accommodating it, the inside of the housing 3 can be closed by the valve body 4c, and the working members 47B, 47C can be replaced or clogging can be removed inside the accommodation section 4Sa. After that, by accommodating the working members 47A to 47C again in the accommodation section 4Sa and making them wait, it becomes possible to apply water pressure approximately equal to that in the fluid pipe 2 to check for leakage before performing another task. In addition, when the working members 47A to 47C are accommodated in the accommodation sections 4Sa and 4Sb, the above tasks can be performed while the discharge pipe 42 is supported by the valve box 4a via the work cover 31, so that the tasks of the multiple steps can be performed without interrupting the flow, and the tasks can be immediately resumed after replacing the working members or after completing the clogging removal task.

[0073] In addition, in this embodiment, an example is given of a form in which the discharge operation of the foreign object C is performed by the operation control unit 5 connected via a flexible pipe joint 37 to a position corresponding to the insertion hole 32 formed in the center of the work lid 31, but the present invention is not limited to this, and for example, as shown in Figure 12, the discharge operation may be performed by connecting the operation control unit 5 via a flexible pipe joint 37 to a position corresponding to the confirmation windows 33a to 33d other than the center of the work lid 31.

[0074] 12, the work control section 5 may be connected via a flexible pipe joint 37 to a position corresponding to the confirmation windows 33a to 33d, and another work control section 5A may be connected to a position corresponding to the insertion hole 32 to perform work. In other words, the number of work control sections 5, 5A, etc. to be connected may be one or more, and they may be connected to any position. Note that, although the work control section 5 rotates the handle 45a of the reel 45 to wind up the wire rope 44, when the water pressure is high, as shown in the work control section 5A, the support pipe 41 and the discharge pipe 42 may be hung by a chain block 53, and the chain may be wound up by an operating handle (not shown) attached to the chain block 53.

[0075] In addition, in the case of a housing 103 shown in Figure 13 having a seat surface 101 on the inner bottom surface, when a working member 47D (see Figure 10(d)) having a maximum outer dimension L1d larger than the inner diameter dimension L2 of the insertion hole 32 or the inner diameter dimension L6 of the confirmation windows 33a to 33d is attached to the tip of the discharge pipe 42, or when a working member 47E (see Figure 10(e)) having a maximum outer dimension L1e larger than the inner diameter dimension L2 of the insertion hole 32 is attached to the tip of the discharge pipe 42, the working members 47D, 47E cannot be inserted into the inside of the valve box 4a through the insertion hole 32 or the confirmation windows 33a to 33d, so the working lid 31 can be suspended by a lifting tool H and a wire W equipped with a hook suspended by a crane not shown, and removed from the upper opening end of the valve box 4a.

[0076] Then, for example, after attaching a working member 47D to the tip of the discharge pipe 42 of the work control section 5 as shown in Fig. 12, as shown in Fig. 13, a work lid 31 is hermetically attached to the upper open end of the valve box 4a to close it, and then the work of removing foreign matter C adhering to the seat surface 101 can be performed using the work member 47D. In this way, by attaching multiple work control sections 5, 5A to the work lid 31 and attaching various work members 47A to 47E to the tip, multiple tasks can be performed simultaneously, improving work efficiency.

[0077] Although not specifically described or illustrated, after the above-mentioned foreign matter C discharge and inspection work is completed, a flow control valve or the like is installed inside the housing 3, and the upper opening of the housing 3 is hermetically closed with a lid member (not shown), and then the gate valve device 4 is removed.

[0078] (Action and effect) As described above, the working device 1 as an embodiment of the present invention at least comprises a housing 3 that hermetically fits around a fluid pipe 2, a passage connecting the inside of the housing 3 with the outside, a valve (e.g., a gate valve device 4, a working ball valve 20) having a valve body (e.g., valve body 4c, ball 22) that can open and close the passage, and working members 47A-47E as functional parts that can enter the housing 3 through the passage, and has sealed storage sections 4Sa, 4Sb in which the working members 47A-47E can wait, located in the passage located outside the valve body (outside when the inside of the fluid pipe 2 is used as a reference).

[0079] According to this, the working members 47A-47E are stored in the storage sections 4Sa, 4Sb outside the valve body 4c of the check valve device 4 and the ball 22 of the working ball valve 20 and are kept waiting in a sealed state (watertight state), and in this state the passage can be opened and the working members 47A-47E can be inserted into the housing 3.Therefore, various working members 47A-47E can be inserted inside the housing 3 in an uninterrupted flow state to perform various tasks such as discharging or sweeping out foreign matter C inside the housing 3.

[0080] Also, the housing 3 has a discharge pipe 42 as an extension part that extends toward the inside of the housing 3 and has a lower end to which the working members 47A-47E can be attached and detached, and the housing parts 4Sa, 4Sb have an O-ring 26 as a sealing part that seals the discharge pipe 42 so that it can be moved forward and backward, thereby preventing leakage of fluid from between the housing parts 4Sa, 4Sb and the discharge pipe 42 that moves forward and backward. Note that the sealing part that seals the extension part so that it can be moved forward and backward is not limited to the O-ring 26, and other sealing materials such as packing may be used.

[0081] In addition, it has a discharge pipe 42 as an extension part that extends toward inside the housing 3 and has a lower end at which the working members 47A-47E can be attached and detached, and the accommodating parts 4Sa, 4Sb are configured to be able to accommodate the lower end of the discharge pipe 42 and the working members 47A-47E in a sealed manner, so that the lower end of the discharge pipe 42 can be accommodated in the accommodating parts 4Sa, 4Sb together with the working members 47A-47E, and therefore when the passage is opened, the working members 47A-47E can be inserted into the housing 3 via the discharge pipe 42.

[0082] Furthermore, the working members 47A to 47E as functional parts are attached to the lower end of the discharge pipe 42 as the extended part, but for example, if the advancement / retraction direction of the extended part is approximately horizontal, it is sufficient that they are attached to the tip in the insertion direction rather than the lower end.

[0083] In addition, the valve is a check valve device 4 having a valve box 4a that movably accommodates the valve body 4c, and since the accommodating portion 4Sa is formed within the valve box 4a, it is easy to form the accommodating portion 4Sa by utilizing the internal space of the valve box 4a that accommodates the valve body 4c.

[0084] In addition, the valve box 4a has an opening (the upper opening end of the body 13b) that can open and close the storage section 4Sa, so that by removing the work lid 31, the storage section 4Sa can be opened wide, making it easier to approach the work members 47A to 47E stored in the storage section 4Sa.

[0085] In addition, a working lid 31 is provided as a lid portion capable of closing the opening of the valve box 4a, and the working lid 31 is provided with confirmation windows 33a-33d as openable and closable hole portions, so that it is possible to open the confirmation windows 33a-33d and visually check the internal condition of the housing 3 without removing the working lid 31. It is also possible to perform work such as inserting working members 47A-47C into the housing 3 through the confirmation windows 33a-33d.

[0086] In addition, the work lid 31 is provided with a work ball valve 20 as an opening / closing valve through which the lower end of the discharge pipe 42 and the work members 47A-47E can be inserted and removed, and a passage located outside the ball 22 of the work ball valve 20 has a storage section 4Sb as a sealed second storage section in which the work members 47A-47E can wait, so that the lower end of the discharge pipe 42 can be positioned in the storage section 4Sb outside the work ball valve 20, making it possible to attach and detach the work members 47A-47E.

[0087] In addition, since the upper surface of the valve body 4c is formed as a flat surface, the upper surface of the valve body 4c formed as a flat surface can be used to perform the attachment and detachment work of the working members 47A to 47E. During the work, not only the acrylic plate 35 but also tools and necessary members may be placed on the upper surface of the valve body 4c.

[0088] Moreover, the valve is a work ball valve 20 having a main body 21 which is rotatably provided with a ball 22 as a valve body, and the accommodating portion 4Sb is formed outside the ball 22 of the work ball valve 20, so that the work members 47A to 47C can be accommodated in the accommodating portion 4Sb outside the work ball valve 20 and kept waiting.

[0089] In addition, the valve is a check valve device 4 having a valve box 4a that movably accommodates the valve body 4c, and the accommodating section 4Sa is formed within a working tube 61 that communicates with the valve box 4a. As a result, the accommodating section 4Sc can be formed in a working tube 61 different from the valve box 4a, and the size of the accommodating space can be set with a high degree of freedom.

[0090] In addition, air vent sections (e.g., air vent valve 36 and gap 110 between flange 41a of support pipe 41 and upper flange 15b of connecting pipe 15) are formed in storage sections 4Sa, 4Sb, so that air can be easily vented when filling storage sections 4Sa, 4Sb with fluid.

[0091] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention also includes modifications and additions that do not deviate from the gist of the present invention.

[0092] For example, in the above embodiment, when performing work to discharge foreign matter C by suction using the work member 47A or the like, there is no problem with the suction force when the pressure in the fluid pipe 2 is high, but when the pressure in the fluid pipe 2 is low, the suction force may be weak and the foreign matter C may not be sucked up properly. Therefore, for example, as shown in Figure 14, suction through the discharge pipe 42 may be forcibly performed using a low-pressure suction work unit 80 consisting of a strainer 81 to which the hose 48 of the work control unit 5 is connected, an electric pump 82 for sucking up wastewater, a connecting pipe 83 connecting the strainer 81 and the electric pump 82, and a water supply pipe 84 connected to a water supply tank not shown and supplying water into the connecting pipe 83.

[0093] In the above embodiment, the working members 47A to 47E can be attached to the tip of the discharge pipe 42, but the present invention is not limited to this. For example, as shown in Fig. 15, a flexible hose 88 or the like may be attached as a functional part to the tip of the discharge pipe 42, and the hose 88 may be inserted into the inside of the fluid pipe 2 so that the foreign object C can be sucked. Also, an imaging device 89 as a functional part consisting of a camera or the like may be attached to the tip of the discharge pipe 42, and an image of the inside of the housing 3 captured by the imaging part of the imaging device may be displayed on a monitor device (not shown) or the like for confirmation. In this way, even if the turbidity of the fluid inside the housing 3 is high and visual confirmation through the confirmation windows 33a to 33d is difficult, it can be easily confirmed by the imaging device 89.

[0094] Furthermore, by attaching a light source (e.g., a light emitting diode or the like) (not shown) as a functional part to the tip of the discharge pipe 42 so as to illuminate the inside of the housing 3, it is possible to improve visibility when visually checking the working status inside the housing 3 through the check windows 33a-33d or when checking the status using the video captured by the imaging device 89. The light source may be attached alone to the tip of the extension part and used, or may be attached to the extension part together with the imaging device 89 and used, or may be attached to an extension part separate from the imaging device 89 and used.

[0095] In addition, in the above embodiment, an example is given of a form in which a gate valve device 4 having a valve body 4c capable of opening and closing within the housing 3 and an operation ball valve 20 having a ball 22 as a valve body capable of opening and closing within the housing 3 are applied as a valve having a valve body that can open and close within the housing 3. However, the present invention is not limited to this, and a valve having a valve body separate from the valve body 4c of the gate valve device 4 and the ball 22 of the operation ball valve 20 may be applied as long as it is a valve having a valve body that can open and close within the housing.

[0096] In addition, in the above embodiment, an example is given of a form in which the accommodating section 4Sa provided inside the valve box 4a and the accommodating section 4Sb consisting of the flexible pipe joint 37, the lower connecting pipe 15c, the working ball valve 20 and the upper connecting pipe 15d are used as accommodating sections capable of accommodating the tip of the discharge pipe 42 as an extension section and the working members 47A to 47E as functional sections. However, the present invention is not limited to this, and is not limited to the above-mentioned accommodating sections 4Sb, 4Sb as long as they are formed outside the valve bodies such as the valve body 4c and the ball 22.

[0097] Specifically, for example, as shown in Fig. 15, a separate working cylinder 60 or the like may be provided in a sealed state between the valve box 4a of the gate valve device 4 and the working cover 31, and a storage section 4Sc communicating with the storage section 4Sa may be provided inside the working cylinder 60. This makes it possible to store large chips and the like that cannot be stored in the storage section 4Sa in the storage section 4Sc or in the two storage sections 4Sa and 4Sc. In this way, since the storage section 4Sc can be formed in the working cylinder 60 different from the valve box 4a, even if it is not possible to secure a large space for forming a storage section outside the valve body 4c in the valve box 4a that supports the valve body 4c so that it can slide, the size of the storage space can be set with a high degree of freedom.

[0098] In addition, in the above embodiment, the housing 3 and the valve box 4a of the gate valve device 4 are configured separately, but the housing 3 and the valve box 4a of the gate valve device 4 may be integrated. In other words, the accommodation section may be provided inside the valve box 4a like the accommodation section 4Sa in the above embodiment, or may be provided outside the valve box 4a like the accommodation section 4Sb provided inside the flexible pipe joint 37, the lower connecting pipe 15c, the working ball valve 20, and the upper connecting pipe 15d connected in a sealed state to the valve box 4a, or the accommodation section 4Sc provided inside the working cylinder 60 shown in FIG.

[0099] In the above embodiment, the storage unit includes storage unit 4Sa inside valve box 4a, and storage units 4Sb and 4Sc outside valve box 4a. In other words, the embodiment shows an example in which working device 1 includes multiple storage units 4Sa, 4Sb, and 4Sc, but the present invention is not limited to this. Working device 1 may include at least one of multiple storage units 4Sa, 4Sb, and 4Sc, regardless of whether the storage unit is inside or outside valve box 4a. Furthermore, working device 1 may include four or more storage units.

[0100] In the above embodiment, the valve element of the valve, such as the valve element 4c of the gate valve device 4 and the ball 22 of the work ball valve 20, is provided in the valve box 4a or the main body 21 connected to the housing 3 in a sealed manner, but the present invention is not limited to this and may be provided in the housing. Specifically, for example, as shown in FIG. 16, a work ball valve 120 having a ball 122 as a valve element may be provided in a sealed manner in the housing 103A via a connecting pipe 15A. In this case, a housing section 4Sd capable of housing a functional section (for example, a working member 47Z) may be provided outside the ball 122, and a discharge pipe 42 as an extension section may be supported by a support pipe 41 connected to the connecting pipe 15A so as to be movable forward and backward relative to the inside of the housing 103A.

[0101] Furthermore, in the above embodiment, the extension portion and the functional portion are provided so as to be insertable from above to below the housing 3, but the direction of movement of the extension portion is not limited to the up-down direction, and it may be movable in a direction other than the up-down direction, such as a substantially horizontal direction. For example, as shown in Fig. 16, it may be provided so as to be insertable from the side of the housing 103A toward the inside.

[0102] In the above embodiment, the working device 1 is exemplified as having a gate valve device 4 having a valve body 4c and an operation ball valve 20 having a ball 22 as a valve body, but the present invention is not limited to this, and the working device does not necessarily have to have two or more valves as long as it has at least one valve having a valve body. In addition, when only one valve is provided, it may be provided with only an operation ball valve 120 as shown in Fig. 16, or it may be provided with only the gate valve device 4 of the above embodiment, and the type of valve may be different from the above valve.

[0103] In the above embodiment, the gate valve device 4 having the valve element 4c movable between the valve box 4a and the valve lid 4b is provided separately from the housing 3, but the present invention is not limited to this, and the gate valve device 4 may be provided integrally with the housing 3. For example, as shown in Fig. 17, the valve element 4c may be provided movably in the housing 103B without providing a valve box or the like separate from the housing 103B. In this case, the accommodation section 4Se may be provided in the space outside the valve element 4c in the housing 103B.

[0104] In addition, in the above embodiment, as examples of work related to drilling the fluid pipe 2 by the drilling machine 7 inside the housing 3, the work of sucking and discharging foreign matter C by the work control unit 5, sweeping it out, removing it from the sheet surface, suctioning it, and taking an image of the inside of the housing 3 using the imaging device 89 have been exemplified, but the present invention is not limited to this, and may also include work using various other tools other than those mentioned above, such as a work of checking the water quality inside the housing 3 using a detection device (not shown) and a work of checking for leaks before drilling the fluid pipe 2.

[0105] In addition, in the above embodiment, an example was given of a form in which the work control unit 5 is composed of a work lid 31, a flexible pipe joint 37, a connecting pipe 15 including a work ball valve 20, a support pipe 41, and a discharge pipe 42, but the present invention is not limited to this, and as long as it has at least the support pipe 41 and the discharge pipe 42, it does not necessarily have to have the work lid 31, the flexible pipe joint 37, and the connecting pipe 15 including a work ball valve 20.

[0106] In the above embodiment, the discharge pipe 42 made of a metal material is used as the extension part provided so as to be capable of advancing and retracting toward the inside of the housing 3, but the present invention is not limited to this, and the extension part may be made of a flexible member such as a rubber hose. Also, the extension part does not have to be a pipe member through which the foreign object C can move like the discharge pipe 42, and may be made of a simple rod member. In other words, as long as the extension part is provided so as to be capable of advancing and retracting toward the inside of the housing 3, the material, function, etc. can be variously changed depending on the functional part attached to the tip.

[0107] In addition, in the above embodiment, an example is given of a form in which a working device 1 capable of discharging foreign matter C generated when a specific portion of a fluid pipe 2 is cut by a drilling machine 7 is applied, but the present invention is not limited to this, and a working device capable of discharging foreign matter C generated when a specific portion of a fluid pipe 2 is drilled by a drilling machine 7 or the like may be applied.

[0108] In the above embodiment, the valve element 4c is provided as a valve element capable of opening and closing the inside of the housing 3 and is movable in the horizontal direction relative to the valve box 4a, and is placed in the valve box 4a to close the inside of the housing 3. However, the present invention is not limited to this, and a valve element that closes the inside of the housing by moving the valve element 4c in the vertical direction may be applied. The type of valve element is also arbitrary and can be changed in various ways.

[0109] In addition, in the above embodiment, the gate valve device 4 having a valve body 4c that can open and close inside the housing 3 is exemplified as being removed by closing the upper opening of the housing 3 with a lid member (not shown) after the removal and inspection work of the foreign matter C is completed, but the present invention is not limited to this and it may be left as it is. [Explanation of symbols]

[0110] 1 Work equipment 2 Fluid tube 3,103,103A,103B Housing 4. Gate valve device (valve, working valve) 4a Valve box 4b Opercle 4c Valve body 4d Groove 4Sa, 4Sd, 4Se storage unit 4Sb, 4Sc housing section (second housing section) 5,5A Work control unit 7 Drilling machine 15,15A connecting pipe 15c Lower connecting pipe 15d Upper connecting pipe 20. Working ball valve (valve, on-off valve) 21 Main body (main body) 22 Ball (valve body) 26 O-ring (sealing part) 31 Work lid (lid part) 32 Insertion hole 33a~33d Inspection window (hole) 35 Acrylic Board 36 Air vent valve (air vent) 37 Flexible pipe joints 41 Support pipe 42 Discharge pipe (extension part) 47A~47E,47Z Working parts (functional parts) 60 Working Cylinder 88 Hose (functional part) 89 Imaging device (functional part) 110 Gap (air vent) C Foreign matter

Claims

1. A working device having at least a housing that hermetically fits a fluid pipe, a passage that connects the inside of the housing to the outside, a valve having a valve body that can open and close the passage, and a functional part that can enter the housing through the passage, A working device comprising: a passage located outside the valve body, the passage having a sealed container in which the functional part can wait.

2. 2. The working device according to claim 1, wherein the housing has an extension portion at a tip of which the functional portion can be detachably attached, and the housing portion has a sealing portion that seals the extension portion so that the extension can be advanced and retreated.

3. The working device according to claim 1, characterized in that the working device has an extension portion that extends into the housing and has an end at which the functional portion can be attached and detached, and the accommodating portion is configured to be able to accommodate the end of the extension portion and the functional portion in a sealed manner.

4. 2. The working device according to claim 1, wherein the valve is an operating valve having a valve body that movably houses the valve element, and the housing portion is formed within the valve body.

5. 5. The working device according to claim 4, wherein the valve body is formed with an opening capable of opening and closing the accommodation portion.

6. 6. The working device according to claim 5, further comprising a lid capable of closing the opening, the lid being provided with an openable and closable hole.

7. The working device described in claim 5 or 6, characterized in that the lid portion is provided with an opening / closing valve through which the tip of the extension portion and the functional portion can be inserted and removed, and a passage located outside the valve body of the opening / closing valve has a sealed second storage portion in which the functional portion can wait.

8. 5. The working device according to claim 4, wherein an upper surface of the valve body is formed into a flat surface.

9. 2. The working device according to claim 1, wherein the valve is an on-off valve having a main body rotatably provided with the valve body, and the accommodating portion is formed outside the valve body of the on-off valve.

10. 2. The working device according to claim 1, wherein the valve is an operating valve having a valve body that movably houses the valve element, and the housing portion is formed within a working cylinder that communicates with the valve body.

11. The working device according to claim 1, wherein the housing portion is formed with an air vent portion.

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