Valve opening and closing device for drain pipe cleaning and method for cleaning drain pipe

Abstract

To make a nozzle-carrying operator perform cleaning work by opening and closing a valve even if the valve which performs discharge control of high pressure water is arranged outdoor.SOLUTION: This valve opening and closing device comprises a remote control device 1 for transmitting control signals by operator's operation and a valve opening and closing mechanism part 2 for jetting high pressure water out of a high pressure cleaning machine by opening and closing a water conduit 2c4 of a main valve 2c on the basis of control signals from the remote control device 1. The valve of the main valve opening and closing mechanism 2c is constituted to open and close the water conduit 2c4 by interlocking with the rotary action of a valve opening closing handle 2c3. The valve opening and closing mechanism part 2 has a current supply control part 2a for controlling current supply by receiving control signals from the remote control device 1, a motor 2e for rotating a shaft of rotation by means of a current supplied from the current supply control part 2a, and a handle coupling part 2d and the like provided on the shaft of rotation of the motor 2a to be coupled with the valve opening closing handle 2c3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a drain pipe cleaning valve opening and closing device and a drain pipe cleaning method that perform cleaning by spraying high-pressure water from a high-pressure washer into the drain pipes of an apartment building or the like. [Background technology]

[0002] In the case of a detached house, the nozzle of the high-pressure washer is basically inserted into the outdoor drainage manhole to clean the drainage pipes, but in an apartment building, cleaning from the outdoor drainage manhole is not possible, so the nozzle of the high-pressure washer is inserted into the drain outlet of the water area inside each house to clean the inside of the drainage pipes. When cleaning drainage pipes in an apartment building, in order to prevent accidents such as tripping over the hose and the hose coming off the valve, the valve that controls the discharge of high-pressure water is usually placed on a high-pressure washer truck or nearby outdoors (outdoors) to perform high-pressure cleaning work. Therefore, cleaning work on drainage pipes in an apartment building requires two people, a cleaner and a valve operator, and the valve operator waits outdoors (outdoors) and opens and closes the valve outdoors (outdoors) according to the instructions of the cleaner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3135608 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the drain pipe cleaning valve opening and closing device of Patent Document 1 mentioned above, the valve that controls the discharge of high-pressure water is placed on the high-pressure cleaning vehicle or outside a nearby house, i.e., outdoors (outdoors), to perform the high-pressure cleaning operation, so there is a problem that the cleaning operation requires at least two people: one person holding the nozzle to perform the cleaning work indoors, and one person to operate the valve outdoors (outdoors).

[0005] The present invention has been made with an eye on such problems, and aims to provide a drain pipe cleaning valve opening and closing device and a drain pipe cleaning method that allow a worker holding a nozzle to open and close the valve to perform drain pipe cleaning work, even if the valve that controls the discharge of high-pressure water is located outdoors (outdoors). [Means for solving the problem]

[0006] In order to solve the above problems, the drain pipe cleaning valve opening and closing device of the present invention is a drain pipe cleaning valve opening and closing device that controls the spray of high-pressure water from a high-pressure washer to clean a drain pipe, and is characterized in having a remote control device that transmits a control signal by operation of an operator, and a valve opening and closing mechanism that opens and closes the water passage of the main valve based on the control signal from the remote control device to spray high-pressure water from the high-pressure washer. and a valve opening / closing mechanism box having legs and a bottom surface raised at least above the height of the main valve. A fixed main valve clamping part fixed to the bottom surface of the valve opening / closing mechanism box. A movable main valve clamping part is rotatably connected to the fixed main valve clamping part and rotates to clamp and fix the main valve between the fixed main valve clamping part and the movable main valve clamping part. A handle connecting part is provided on the rotating shaft of the motor protruding from the valve opening / closing mechanism box, and is connected to the valve opening / closing handle of the main valve fixed to the bottom surface of the valve opening / closing mechanism box by the fixed main valve clamping part and the movable main valve clamping part. In addition, in the drain pipe cleaning valve opening and closing device of the present invention, the valve opening and closing mechanism unit further has a handle fully open state detection sensor that detects the fully open state of the valve opening and closing handle, and a handle fully closed state detection sensor that detects the fully closed state of the valve opening and closing handle, and the current supply control unit is also characterized in that when the fully open state or the fully closed state of the valve opening and closing handle is detected based on sensor signals from the handle fully open state detection sensor and the handle fully closed state detection sensor, it controls the current supply to the motor to be stopped. In addition, the drain pipe cleaning method of the present invention is a method of cleaning a drain pipe by spraying high-pressure water from a high-pressure washer into the drain pipe to clean it, wherein the main valve of the drain pipe cleaning valve opening and closing device is connected to a cleaning machine side hose via a sub-valve that opens and closes the water passage by rotating a sub-handle, leaving the water passage of the sub-valve open, and when cleaning a drain pipe using any of the above-mentioned drain pipe cleaning valve opening and closing devices, a worker holds the nozzle at the end of the nozzle side hose and the remote control device, and operates the remote control device to send a control signal to the valve opening and closing mechanism to clean the drain pipe, and when cleaning a drain pipe by removing any of the above-mentioned drain pipe cleaning valve opening and closing devices, the nozzle side hose is directly connected to the sub-valve, and the drain pipe cleaning work is performed by two workers, one who holds the nozzle at the end of the nozzle side hose to perform the drain pipe cleaning work, and the other who rotates the sub-handle of the sub-valve. Effect of the Invention

[0007] The drain pipe cleaning valve opening and closing device of the present invention comprises a remote control device that transmits a control signal by operation of an operator, a current supply control unit that receives a control signal from the remote control device, and a valve opening and closing mechanism unit that opens and closes a valve that controls the discharge of high-pressure water based on the control signal received by the current supply control unit. Therefore, even if the valve that controls the discharge of high-pressure water is installed outdoors, a worker can go indoors with the nozzle at the end of the hose that sprays the high-pressure water and the remote control device and operate the remote control device to perform high-pressure cleaning of indoor drainage pipes, so high-pressure cleaning work can be done by even one person. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a state in which an indoor drain pipe is being cleaned using a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention. [Diagram 2] 1 is a front view showing the structure of a valve opening and closing mechanism part that constitutes a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention. [Diagram 3] 1 is a side view showing the structure of a valve opening and closing mechanism part that constitutes a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention. [Figure 4] 1 is a plan view showing the state inside a valve opening and closing mechanism box of a valve opening and closing mechanism that constitutes an embodiment of a drain pipe cleaning valve opening and closing device according to the present invention. FIG. [Diagram 5] 1 is a front view showing the structure of a main valve of a valve opening and closing mechanism part constituting a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention. FIG. [Figure 6] 1 is an enlarged plan view of a main portion showing the installation positions of a handle fully open state detection sensor and a handle fully closed state detection sensor in a valve opening and closing mechanism part that constitutes an embodiment of a drain pipe cleaning valve opening and closing device according to the present invention. FIG. [Figure 7] This is an enlarged side view of the main valve clamping portion of the valve opening and closing mechanism that constitutes the drain pipe cleaning valve opening and closing device of the embodiment of the present invention, showing the state just before the movable side main valve clamping portion is opened and clamps the main valve between it and the fixed side main valve clamping portion. [Figure 8] FIG. 1 is an enlarged side view of a key portion of a main valve clamping portion of a valve opening / closing mechanism that constitutes an embodiment of a drain pipe cleaning valve opening / closing device according to the present invention, showing a state in which the main valve is clamped between a movable side main valve clamping portion and a fixed side main valve clamping portion. [Figure 9] This is an enlarged front view of the main parts, showing the state just before the main valve is attached to the fixed side main valve clamping portion of the main valve clamping portion of the valve opening and closing mechanism portion that constitutes the drain pipe cleaning valve opening and closing device of the embodiment of the present invention. [Figure 10] 1 is an enlarged view of a main portion showing the connection relationship of a valve opening and closing mechanism when cleaning an indoor drain pipe using a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention. FIG. [Figure 11] 1 is an enlarged view of a main portion showing a connection relationship when the drain pipe cleaning valve opening and closing device of an embodiment of the present invention is removed to perform cleaning work on an indoor drain pipe. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Next, a drain pipe cleaning valve opening and closing device and a drain pipe cleaning method according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the embodiment described below is merely an example of the present invention, and the present invention is not limited to the embodiment described below.

[0010] <Configuration of a drain pipe cleaning valve opening and closing device according to an embodiment of the present invention> The drain pipe cleaning valve opening and closing device of the embodiment of the present invention is configured with a remote control device 1, a valve opening and closing mechanism unit 2, etc., and is connected to a high-pressure washer (not shown) via a washer side hose 3 and a sub-valve 4, and is also connected to a nozzle 6 via a nozzle side hose 5. A worker inserts the nozzle 6 into a drain pipe 7a of an apartment building 7 and operates the remote control device 1 to spray high-pressure water from the high-pressure washer (not shown) into the drain pipe 7a to clean it.

[0011] In this embodiment, the remote control device 1 is connected to the current supply control section 2a of the valve opening / closing mechanism section 2 via a cable 8 in a wired manner as described below, but the present invention is not limited to the wired type, and a wireless remote control device that does not use the cable 8 may be used, and a mobile phone such as a smartphone with an app installed may function as the remote control device 1 of this embodiment. Also, the high-pressure washer (not shown) is mounted on the loading platform of a vehicle (not shown) parked outside the room, and a generator (not shown) is also mounted on the loading platform.

[0012] (Remote control device 1) The remote control device 1 is connected to the valve opening / closing mechanism unit 2 via a cable 8, and has at least an open button 1a which rotates a motor 2e, described later, in the valve opening / closing mechanism unit 2 to open the valve opening / closing handle 2c3 and spray high-pressure water from a high-pressure washer (not shown) as buttons to be operated by an operator, and a close button 1b which reverses the rotation of the motor 2e to close the valve opening / closing handle 2c3 and stop the spray of high-pressure water from the high-pressure washer (not shown).

[0013] Here, the open button 1a and the close button 1b are configured as push buttons of a known structure that are pushed back by a spring (not shown) or the like and turned off when released, and are configured to be in an on state while continuing to be pressed, and a current is supplied from the current supply control unit 2a to the motor 2e to rotate in the open or close direction. Therefore, after pressing the open button 1a and the close button 1b, the worker can adjust the opening and closing angle of the valve opening and closing handle 2c3 of the main valve 2c to any angle by releasing the hand in the middle and adjusting the pressing time. Of course, the open button 1a and the close button 1b may be used together as one button. Also, the remote control device 1 may be configured to transmit a wireless control signal without using the cable 8 to the current supply control unit 2a of the valve opening and closing mechanism unit 2 as described above.

[0014] (Valve opening and closing mechanism 2) As shown in Figures 2 to 4, the valve opening and closing mechanism 2 is composed of a current supply control unit 2a, a motor driver 2a1, a battery 2b, a main valve 2c, a handle connection unit 2d, a motor 2e, a handle fully open state detection sensor 2f, a handle fully closed state detection sensor 2g, a valve opening and closing mechanism box 2h, and a transportation handle 2i, etc.

[0015] (Current supply control unit 2a) The current supply control unit 2a receives a control signal from the remote control device 1 and controls the drive current supplied from the battery 2b to the motor 2e via the motor driver 2a1, thereby controlling the drive of the motor 2e to control the opening and closing of the valve opening / closing handle 2c3 of the main valve 2c, and is configured to stop the supply of drive current from the battery 2b to the motor 2e upon input of a detection signal indicating that the valve opening / closing handle 2c3 is fully open or fully closed from the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g, respectively.

[0016] (Battery 2b) The battery 2b is composed of a secondary battery such as a primary battery or a rechargeable battery, and stores in advance a drive current for the motor 2e.

[0017] (Main valve 2c) The main valve 2c is a valve that has been conventionally used, for example, as shown in Figure 5, and has the same structure as the sub-valve 4 described later, and has a washer-side hose connection port 2c1 to which high-pressure water is supplied from a high-pressure washer (not shown), a nozzle-side hose connection port 2c2 to which a nozzle-side hose 5 is connected, and a valve opening / closing handle 2c3 that opens and closes a valve (not shown) that opens and closes the water passage 2c4 between the washer-side hose connection port 2c1 and the nozzle-side hose connection port 2c2 by rotating via a handle rotating shaft 2c31.

[0018] As shown in FIG. 5 etc., the cleaning machine side hose connection port 2c1 and the nozzle side hose connection port 2c2 are provided with female threaded portions, and the male threaded portion 2c51 of the plug 2c5 is connected to the female threaded portion of the cleaning machine side hose connection port 2c1, while the male threaded portion 2c61 of the socket 2c6 is connected to the female threaded portion of the nozzle side hose connection port 2c2.

[0019] (Handle connection part 2d) The handle connecting portion 2d is a portion that clamps the valve opening / closing handle 2c3 of the main valve 2c and rotates it by the motor 2e to open and close the valve opening / closing handle 2c3, and is provided protruding from the bottom plate 2h1 of the valve opening / closing mechanism box 2h as shown in Figure 3 etc.

[0020] (Motor 2e) The motor 2e receives a driving current from the battery 2b based on the control of the current supply control unit 2a, and rotates the handle connecting portion 2d via a rotating shaft (not shown) and gears (not shown), etc., to open and close the valve opening / closing handle 2c3.

[0021] (Handle fully open state detection sensor 2f) The handle fully open state detection sensor 2f is provided at a position in the valve opening / closing mechanism box 2h where the valve opening / closing handle 2c3 is fully opened to fully open the water passage 2c4 of the main valve 2c, as shown in Figure 6, and is configured to output a detection signal to the current supply control unit 2a.

[0022] (Handle fully closed state detection sensor 2g) The handle fully closed state detection sensor 2g is provided at a position in the valve opening / closing mechanism box 2h where the valve opening / closing handle 2c3 is fully closed to fully close the water passage 2c4 of the main valve 2c, as shown in Figure 6, and is configured to output a detection signal to the current supply control unit 2a.

[0023] (Valve opening and closing mechanism box 2h) The valve opening / closing mechanism box 2h is a housing incorporating the current supply control unit 2a, the battery 2b, the motor 2e, etc., as shown in Figures 2 to 4, etc., and has legs 2h2 at each of the four corners of a bottom plate 2h1 to raise the bottom plate 2h1. A handle connecting portion 2d is provided on the bottom plate 2h1, and a main valve clamping portion 2h3 that clamps and fixes the main valve 2c is also provided.

[0024] As shown in Figures 5, 7, etc., the main valve clamping portion 2h3 is composed of a main valve clamping portion base 2h30 fixed to the bottom plate 2h1 of the valve opening / closing mechanism box 2h with screws or the like, a fixed-side main valve clamping portion 2h31 fixed to the bottom plate 2h1 of the valve opening / closing mechanism box 2h via the main valve clamping portion base 2h30 and having a U-shaped main valve clamping groove portion 2h31a, a movable-side main valve clamping portion 2h32 rotatably connected to the fixed-side main valve clamping portion 2h31 via a hinge 2h33 and having a curved main valve clamping groove portion 2h32a, and a fixing screw 2h34 that maintains the state when the fixed-side main valve clamping portion 2h31 and the movable-side main valve clamping portion 2h32 are closed to clamp the main valve 2c. Incidentally, FIG. 7 shows the main valve clamping portion 2h3 before the movable side main valve clamping portion 2h32 is opened to clamp the main valve 2c, and FIG. 8 shows the state in which the main valve 2c is clamped by the main valve clamping portion 2h3.

[0025] (Transport handle 2i) As described above, the transportation handle 2i is provided on the upper surface 2h4 of the valve opening / closing mechanism box 2h in a manner that allows it to be raised and lowered (rotated).

[0026] (Sub valve 4) The sub-valve 4 is a valve that has been conventionally used in the same manner as the main valve 2c shown in Figure 5, and has a sub-handle 4a that rotates to open and close a valve (not shown) that opens and closes the water passage, and is equipped with a plug 4b and a socket 4c.

[0027] <Method of using the drain pipe cleaning valve opening and closing device according to the embodiment of the present invention> Next, a method of using the drain pipe cleaning valve opening and closing device according to the embodiment of the present invention configured as above will be described.

[0028] (Installation of drain pipe cleaning valve opening and closing device) In the drain pipe cleaning valve opening and closing device according to the embodiment of the present invention, first, in the main valve holding part 2h32 of the bottom plate 2h1 of the valve opening and closing mechanism box 2h, the movable side main valve holding part 2h3 is closed against the fixed side main valve holding part 2h31 to fix the main valve 2c, as shown in Figures 7 to 9. As described above, the main valve 2c is a commercially available well-known valve, and the same valve as the sub-valve 4 is used.

[0029] 1 and 10, the socket 4c of the sub-valve 4 is connected to the plug 2c5 of the main valve 2c fixed to the drain pipe cleaning valve opening and closing device, and the socket 3a of the washer side hose 3 is connected to the plug 4b of the sub-valve 4. It is also possible to directly connect the socket 3a of the washer side hose 3 to the plug 2c5 of the main valve 2c of the drain pipe cleaning valve opening and closing device without using the sub-valve 4, but in this embodiment, when the drain pipe cleaning valve opening and closing device breaks down, as described later, the drain pipe cleaning valve opening and closing device can be removed and the sub-valve 4 can be used to immediately perform cleaning work by two people as in the conventional case.

[0030] 1 and 10, the plug 5a of the nozzle side hose 5 is connected to the socket 2c6 of the main valve 2c so that high-pressure water from a high-pressure washer (not shown) is sprayed from the nozzle 6 at the tip of the nozzle side hose 5 via the washer side hose 3, the sub-valve 4, the main valve 2c fixed to the drain pipe cleaning valve opening and closing device, and the nozzle side hose 5. In this embodiment, the sub-handle 4a of the sub-valve 4 is opened in order to control the spraying of high-pressure water using the main valve 2c of the drain pipe cleaning valve opening and closing device. Also, the valve opening and closing handle 2c3 of the main valve 2c of the drain pipe cleaning valve opening and closing device is closed.

[0031] (When cleaning by one person using a drain pipe cleaning valve opening and closing device) When cleaning work is performed by one person using the drain pipe cleaning valve opening and closing device, the worker grasps the nozzle 6 at the end of the nozzle side hose 5 and the remote control device 1 extending from the drain pipe cleaning valve opening and closing device via a cable 8, enters the room (indoors) of the apartment building to be cleaned, inserts the nozzle 6 at the end of the nozzle side hose 5 into the drain pipe 9 to be cleaned, and operates the open button 1a on the remote control device 1 to open the main valve 2c of the valve opening and closing mechanism part 2.

[0032] At that time, as described above, the open button 1a is in the ON state while it is being pressed, and current is supplied from the current supply control unit 2a to the motor 2e, and the valve opening / closing handle 2c3 of the main valve 2c rotates in the opening direction, and when the finger is released from the open button 1a, it becomes in the OFF state, the current supply to the motor 2e stops, and the opening / closing angle of the valve opening / closing handle 2c3 of the main valve 2c can be set to any position. Therefore, the water pressure discharged from the tip of the nozzle 6 can be adjusted by the time the open button 1a is pressed. Also, if the water pressure discharged from the tip of the nozzle 6 is too strong, the worker can press the close button 1b to close the valve opening / closing handle 2c3 to weaken the water pressure, or, when the high-pressure cleaning of the drain pipe 7a at that location is completed, the worker can continue to press the close button 1b to close the valve opening / closing handle 2c3.

[0033] As a result, even when a worker is working inside the apartment building to be cleaned, he or she can operate the open button 1a and close button 1b on the remote control device 1 to rotate the valve opening / closing handle 2c3 of the main valve 2c of the drain pipe cleaning valve opening / closing device installed outside (outdoors), thereby opening and closing the water passage 2c4, making it possible for one person to clean the drain pipe 9.

[0034] Here, as shown in FIG. 6, the valve opening / closing mechanism unit 2 is provided with a handle fully open state detection sensor 2f which detects the fully open state of the valve opening / closing handle 2c3, and a handle fully closed state detection sensor 2g which detects the fully closed state of the valve opening / closing handle 2c3, and the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g detect the fully open state or the fully closed state of the valve opening / closing handle 2c3.

[0035] When the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g detect the fully open or fully closed state of the valve opening / closing handle 2c3, the detection signal is output to the current supply control unit 2a, and the current supply control unit 2a stops the current supply from the battery 2b to the motor 2e in response to the input of the detection signals of the fully open or fully closed state of the valve opening / closing handle 2c3 from the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g.

[0036] Therefore, the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g can prevent the valve opening / closing handle 2c3 of the main valve 2c from being opened or closed too far, so that cleaning work can be performed reliably and failures such as motor 2e burning out can be reduced.

[0037] (When the drain cleaning valve opening and closing device is removed and cleaning is performed by two people) In contrast, when cleaning work needs to be performed without using the drain pipe cleaning valve opening and closing device because the remote control device 1 or the valve opening and closing mechanism unit 2 breaks down, or the battery of the remote control device 1 runs out, the drain pipe cleaning valve opening and closing device is removed as shown in Figure 11, the plug 5a of the nozzle side hose 5 is directly connected to the socket 4c of the sub-valve 4, and another worker is allowed to rotate the sub-handle 4a of the sub-valve 4 as in the conventional manner, and the cleaning work of the drain pipe 9 is performed by two people as in the conventional manner, without using the drain pipe cleaning valve opening and closing device.

[0038] Thus, in the method of cleaning a drain pipe using a drain pipe cleaning valve opening and closing device of an embodiment of the present invention, the socket 3a of the cleaning machine side hose 3 is connected via the sub-valve 4, rather than directly connecting the socket 3a of the cleaning machine side hose 3 to the plug 2c5 of the main valve 2c of the drain pipe cleaning valve opening and closing device in advance.Therefore, even if the drain pipe cleaning valve opening and closing device is removed, the sub-valve 4 can be used immediately, improving usability.

[0039] <Summary of the drain pipe cleaning main valve opening and closing device according to the present invention> As described above, the main valve opening and closing device for drain pipe cleaning of an embodiment of the present invention has a remote control device 1 that transmits a control signal by operation by an operator, a current supply control unit 2a that receives the control signal from the remote control device 1, and a valve opening and closing mechanism unit 2 that opens and closes the water passage 2c4 of the main valve 2c based on the control signal received by the current supply control unit 2a.

[0040] Therefore, even if the main valve 2c and sub-valve 4 that control the discharge of high-pressure water are installed outdoors (outdoors), a worker can enter the house (indoors) with the nozzle 6 at the end of the nozzle side hose 5 and the remote control device 1, and operate the remote control device 1 indoors (indoors) to perform high-pressure cleaning of the drain pipe 5a, so that high-pressure cleaning work can be performed by one person.

[0041] In addition, in the embodiment of the main valve opening and closing device for drain pipe cleaning according to the present invention, the valve opening and closing mechanism unit 2 uses a conventional valve that opens and closes the water passage 2c4 in conjunction with the rotational operation of the valve opening and closing handle 2c3, and is configured to open and close the water passage 2c4 of the main valve 2c by rotating the valve opening and closing handle 2c3 based on the control signal received by the current supply control unit 2a.

[0042] Therefore, a conventional handle-rotating valve can be used as the main valve 2c of the current supply control section 2a, thereby reducing costs.

[0043] In addition, in the main valve opening and closing device for drain pipe cleaning of an embodiment of the present invention, the valve opening and closing mechanism unit 2 further includes a handle fully open state detection sensor 2f that detects the fully open state of the valve opening and closing handle 2c3, and a handle fully closed state detection sensor 2g that detects the fully closed state of the valve opening and closing handle 2c3, and is configured so that when the fully open state or the fully closed state of the valve opening and closing handle 2c3 is detected by the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g, the current supply control unit 2a stops the supply of drive current to the motor 2e to stop the rotation of the motor 2e.

[0044] Therefore, even when a worker holds the remote control device 1 and nozzle 6 and installs the valve opening and closing mechanism part 2 equipped with the main valve 2c outdoors to perform cleaning work indoors, the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g can reliably prevent the valve opening and closing handle 2c3 of the main valve 2c from being opened or closed too far, thereby ensuring that the cleaning work of the drain pipe 7a can be performed reliably and the life of the main valve opening and closing device for drain pipe cleaning can be extended.

[0045] In the above embodiment, conventional valves are used as the main valve 2c and the sub-valve 4, however, the present invention is not limited to this and the valve opening and closing mechanism unit 2 may be configured to use a dedicated valve as the main valve 2c, and furthermore, the cleaning operation of the drain pipe 7a may be performed by directly connecting the cleaning machine side hose 3 to the main valve 2c without using the sub-valve 4.

[0046] In addition, in the above embodiment, the drive current of the motor 2e which opens and closes the valve opening / closing handle 2c3 of the main valve 2c is supplied from the battery 2b mounted on the valve opening / closing mechanism unit 2, but the present invention is not limited to this, and it is of course also possible to configure the valve opening / closing mechanism unit 2 not to be equipped with a battery 2b, and to supply drive current to the motor 2e from a generator (not shown), an AC outlet (not shown), etc.

[0047] In the above embodiment, the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g are provided as sensors for detecting the fully open and fully closed states of the handle 2c3. However, the present invention is not limited to this. For example, the handle fully open state detection sensor 2f and the handle fully closed state detection sensor 2g may be omitted, and when the main valve 2c is fully open or fully closed, the load increases and the current value increases rapidly when attempting to rotate the motor 2e. Therefore, the current value of the motor 2e may be monitored, and if it exceeds a predetermined current value, it is determined that the motor 2e is fully open or fully closed and the motor 2e is stopped. Furthermore, it is of course possible to configure the handle 2c3 not to be detected as being fully open or fully closed. [Explanation of symbols]

[0048] 1 Remote control device 1a Open button 1b Close button 2 Valve opening and closing mechanism 2a Current supply control section 2a1 Motor driver 2b Battery 2c Main valve 2c1 Hose connection port on the cleaning machine side 2c2 Nozzle side hose connection port 2c3 Valve opening and closing handle 2c31 Handle rotation shaft 2c4 Canal 2c5 plug 2c51 male thread part 2c6 socket 2c61 male thread part 2d Handle connection part 2e Motor 2f Handle fully open state detection sensor 2g Handle fully closed state detection sensor 2h Valve opening and closing mechanism box 2h1 bottom plate 2h2 legs 2h3 Main valve clamping part 2h31 Fixed side main valve clamping part 2h31a Main valve clamping groove 2h32 Movable side main valve clamping part 2h32a Main valve clamping groove 2h33 Hinge 2h4 top 2i Carrying handle 3 Washer side hose 4 Sub-valve 4a Sub Handle 4b Plug 4c socket 5 Nozzle side hose 6 Nozzles 7 Apartment complex 7a Drain pipe 8 Cable

Claims

1. A drain pipe cleaning valve opening and closing device that cleans a drain pipe by controlling the injection of high-pressure water from a high-pressure washer, A remote control device that transmits a control signal by an operator's operation; a valve opening / closing mechanism that opens and closes a water passage of a main valve based on the control signal from the remote control device to spray high-pressure water from a high-pressure washer; A drain pipe cleaning valve opening and closing device comprising:

2. 2. The drain pipe cleaning valve opening and closing device according to claim 1, The main valve is configured to open and close a water passage in response to a rotational operation of a valve opening / closing handle, The valve opening and closing mechanism includes: a current supply control unit that receives the control signal from the remote control device and controls the supply of current; a motor that rotates a rotary shaft by the current supplied from the current supply control unit; a valve opening / closing mechanism box that accommodates the current supply control unit and the motor, has legs, and has a bottom surface that is elevated at least above the height of the main valve; a fixed main valve clamping portion fixed to a bottom surface of the valve opening / closing mechanism box; a movable main valve clamping portion that is rotatably connected to the fixed main valve clamping portion and that rotates to clamp and fix the main valve between the movable main valve clamping portion and the fixed main valve clamping portion; a handle connecting portion provided on a rotating shaft of the motor protruding from the valve opening / closing mechanism box, the handle connecting portion being connected to a valve opening / closing handle of the main valve fixed to a bottom surface of the valve opening / closing mechanism box by the fixed main valve clamping portion and the movable main valve clamping portion; A drain pipe cleaning valve opening and closing device comprising:

3. The drain pipe cleaning valve opening and closing device according to claim 2, The valve opening and closing mechanism further includes: a handle full open state detection sensor for detecting a full open state of the valve opening / closing handle; a handle fully closed state detection sensor for detecting a fully closed state of the valve opening / closing handle, A drain pipe cleaning valve opening and closing device characterized in that the current supply control unit controls the motor to stop supplying current when the fully open or fully closed state of the valve opening and closing handle is detected based on sensor signals from the handle fully open state detection sensor and the handle fully closed state detection sensor.

4. A method for cleaning a drain pipe by spraying high-pressure water from a high-pressure washer into the drain pipe, The main valve of the drain pipe cleaning valve opening and closing device is connected to a cleaning machine side hose via a sub-valve that opens and closes a water passage by rotating a sub-handle, and the water passage of the sub-valve is kept open, When cleaning a drain pipe using the drain pipe cleaning valve opening and closing device according to any one of claims 1 to 3, an operator holds the nozzle at the end of the nozzle side hose and the remote control device, and operates the remote control device to send a control signal to the valve opening and closing mechanism unit to clean the drain pipe, A drain pipe cleaning method characterized in that, when the drain pipe cleaning valve opening and closing device described in any one of claims 1 to 3 is removed to clean the drain pipe, the nozzle side hose is directly connected to the sub-valve, and the drain pipe cleaning work is performed by two workers: one worker holds the nozzle at the end of the nozzle side hose to perform the drain pipe cleaning work, and the other worker turns the sub-handle of the sub-valve.

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