JPH0625560U - Oscillating valve type viscous fluid pump cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to easily wash the swing valve without removing the pressure pipe. [Structure] A cleaning device body 14 which is rotatable around a horizontal shaft 15 is arranged between a fluid cylinder 3 and an oscillating pipe 6 of an oscillating valve type viscous fluid pump. Two communication pipes 23 and a cleaning pipe 25 are attached to the cleaning device body 14. Washing pipe 2
The inside of 5 is filled with a cleaning pad 27. The cleaning pipe 25
When the high-pressure fluid is sent into the cleaning pipe 25 from the high-pressure fluid pipe 26 connected to the other end of the cleaning pipe 27, the cleaning pad 27 can be moved in the rocking pipe 6. At the time of cleaning, the cleaning device main body 14 is rotated so that the cleaning pipe 25 and the suction / discharge port 2 communicate with each other, and the high-pressure fluid is sent from the pipe 26 into the cleaning pipe 25, so that the cleaning pad 27 moves inside the rocking pipe 6. Since it is pumped through, the inside of the rocking pipe 6 and the pumping pipe connected thereto can be cleaned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for an oscillating valve type viscous fluid pump that pumps highly viscous fluid such as concrete.

[0002]

[Prior art]

 There are two types of intake and discharge valves for viscous fluid pumps: the swing valve type and the slide valve type.

As shown in FIG. 5, the former oscillating valve type has two suction and discharge ports 2 outside the viscous fluid hopper 1 provided with two suction and discharge ports 2 arranged side by side on the lower front surface. Corresponding to the above, two fluid cylinders 3 are installed horizontally, and a fluid piston 4 housed in the fluid cylinder 3 is integrally connected to a hydraulic piston of a main hydraulic cylinder (not shown) via a rod 5, By alternately advancing and retracting the two main hydraulic cylinders, the pistons 4 in the two fluid cylinders 3 are alternately reciprocated. On the other hand, an S-shaped rocking tube 6 is housed in the hopper 1, and a valve ring 7 is attached to one end of the rocking tube 6 so that the valve ring 7 is inside the two intake / discharge ports 2. The attached valve plate 8 is contacted so as to be swingable in the left-right direction, and the other end of the swinging pipe 6 is connected to the pressure feeding pipe 9 by penetrating the back side of the hopper 1. A rocking cylinder (not shown) is connected to a connecting shaft 10 fixed in the middle of the rocking pipe 6 via an operating lever 11, and the reciprocating motion of the fluid cylinder 3 and the rocking of the rocking pipe 6 are associated with each other. The viscous fluid in the hopper 1 sucked into the cylinder 3 is pumped through the oscillating tube 6. Reference numeral 12 is a connecting portion between the rocking pipe 6 and the pressure feeding pipe 9.

When the viscous fluid pressure-feeding work by the oscillating valve-type viscous fluid pump is completed, the viscous fluid remaining in the pressure-feeding pipe 9 is removed for cleaning. The cleaning operation is performed by removing the pressure-feeding pipe 9 from the connecting portion 12, filling the pressure-feeding pipe 9 with a cleaning filling such as sponge, and feeding the filling with the high-pressure fluid into the pressure-feeding pipe 9. I try to wash it.

[0005]

[Problems to be solved by the device]

 However, in the conventional cleaning method described above, the inside of the pressure feeding pipe 9 can be cleaned, but the viscous fluid remaining in the oscillating pipe 6 cannot be removed and cleaned. When cleaning the inside of the rocking pipe 6, it is necessary to operate the viscous fluid pump to suck the viscous fluid in the rocking pipe 6 into the fluid cylinder 3 and to inject high-pressure water from the connecting portion 12. In addition, it takes a lot of time, and the pressure-feeding pipe 9 has to be removed from the connecting portion 12 after each cleaning, which requires a great deal of labor for the cleaning work.

Therefore, the present invention is intended to enable the inside of the oscillating tube to be simultaneously cleaned by a simple operation and in a short time without removing the conventional pressure-feeding tube.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention oscillates a rocking tube housed in a hopper to the left and right to alternately communicate with two fluid cylinders, and alternately sucks and discharges viscous fluid in the hopper. In the oscillating valve type viscous fluid pump configured as described above, between the two fluid cylinders and the hopper, the main body of the cleaning device rotatably supported about the horizontal axis in the left-right direction is disposed. Assemble two connecting pipes in communication with the above two fluid cylinders and a washing pipe parallel to the connecting pipe so that they are located at the same radial position from the center of rotation. A structure is provided in which a pad is provided, a pipe for high-pressure fluid is connected to the other end of the cleaning pipe, and a device for rotating the cleaning device body is further provided.

[0008]

[Action]

 When the viscous fluid pressure-feeding work by the oscillating valve type viscous fluid pump is completed, the main body of the cleaning device is rotated to make the opening of the cleaning pipe communicate with the oscillating pipe through the suction / discharge port, and then, The high pressure fluid is supplied from behind the cleaning plug. As a result, the cleaning pad is pushed into the oscillating pipe and then into the pressure feeding pipe, so that not only the oscillating pipe but also the pressure feeding pipe can be cleaned at the same time.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention, in which a valve ring 7 is fitted to one end of an oscillating tube 6 housed in a hopper 1 as in the oscillating valve type shown in FIG. The rocking pipe 6 and the other end of the rocking pipe 6 is connected to the pressure feed pipe 9 through the hopper 1, and the rocking pipe is fixed via the connecting shaft 10 fixed to the rocking pipe 6. In the configuration in which one of the two suction / discharge ports 2 of the hopper 1 is alternately brought into communication with the fluid cylinder 3 by swinging one end side of 6 to the left and right, the swing valve type viscosity Between the two fluid cylinders 3 of the fluid pump and the suction / discharge port of the hopper 1 where the swing pipes 6 are alternately aligned, the cleaning device body 14 is supported by the horizontal shaft 15 so as to be rotatable in the left and right directions. Let me place it.

That is, an appropriate gap is provided between the guide wall 22 attached to the front end face of the fluid cylinder 3 and the hopper front side wall 13 so that the front frame 16 is provided on the hopper front side wall 13 and the guide wall 22. The rear frame 19 is rotatably supported in the left-right direction by the horizontal shafts 15 on the same line, and the two suction cylinders of the two fluid cylinders 3 and the hopper 1 are interposed between the frames 16 and 19. The two connecting pipes 23 that communicate with the outlet 2 are integrally attached, and communicate with the swinging pipe 6 via either of the two intake / discharge ports 2 when the frames 16 and 19 rotate in the left-right direction. The cleaning pipe 25 is attached to the frame 16 with the opening 24 so that the connecting pipe 23 and the cleaning pipe 25 are located at the same radial position from the center of rotation about the horizontal axis 15 and the cleaning device main body 14 is installed.

A piston rod 18 of a hydraulic cylinder 17 is connected to the frame 16 of the cleaning device body 14, and the cleaning device body 14 as a whole moves in the horizontal direction through the frame 16 by the expansion and contraction operation of the hydraulic cylinder 17. Suction and discharge work in which the communication pipe 23 connects the fluid cylinder 3 to the suction and discharge port 2 and cleaning work in which the cleaning pipe 25 communicates with the rocking pipe 6 via the suction and discharge port 2 In order to realize the above state and to maintain the sealing property when the cleaning device main body 14 rotates, the sliding surface between the frame 16 and the hopper front side wall 13 and the sliding surface between the frame 19 and the guide wall 22. The seal member 20 is interposed on the moving surface, and further, the frame 19 is provided with an escape hole 21 for opening the fluid cylinder 3 to allow the viscous fluid to flow out when the cleaning pipe 25 is in communication with the rocking pipe 6. The cleaning pipe 25 is filled with the cleaning pad 27, and the high pressure fluid pipe 26 is connected to the other end of the cleaning pipe 25 so that the cleaning pipe 27 is filled with the high pressure fluid during cleaning. It is made to discharge from the inside so as to move inside the rocking tube 6.

At the time of pouring concrete, the connecting pipe 23 of the cleaning device body 14 is made to communicate the fluid cylinder 3 and the suction / discharge port 2, and the piston 4 in the fluid cylinder 3 is moved forward and backward alternately. The viscous fluid in the hopper 1 can be pumped through the rocking pipe 6 and the pressure feeding pipe 9 by switching the rocking pipe 6 to the side of the fluid cylinder 3 on the discharge side. Wash to remove residual viscous fluid.

In the case of the cleaning operation for removing the residual viscous fluid, the cleaning device main body 14 is rotated toward the communication pipe 23 communicating with the rocking pipe 6 by the operation of the hydraulic cylinder 17 to wash the cleaning device. The opening 24 of the cleaning pipe 25 in the main body 14 and the suction / discharge port 2 are aligned with each other. When the cleaning pipe 25 and the rocking pipe 6 are in communication with each other, a high-pressure fluid is fed into the cleaning pipe 25 from the pipe 26, and the cleaning pad 27 inside the cleaning pipe 25 is pushed into the rocking pipe 6 from the inside of the cleaning pipe 25. And the viscous fluid in the oscillating pipe 6 is pushed out into the pressure-feeding pipe for cleaning. Further, by pushing the cleaning pad 27 into the pressure-feeding pipe 9 (see FIG. 5) for pressure-feeding, the viscous fluid in the pressure-feeding pipe 9 can be discharged at the same time. At this time, the viscous fluid in the fluid cylinder 3 communicating with the escape hole 21 of the cleaning device body 14 can be easily discharged through the escape hole 21 of the cleaning device body 14, and The fluid can be removed.

When the work of removing the viscous fluid is completed, the cleaning device main body 14 is rotated by the hydraulic cylinder 17 to return it to the original state, and the cleaning pad 27 is inserted into the cleaning pipe 25 through the opening 24, so that the next time. Ready for removal work.

In the above embodiment, the case of the type of cleaning device in which the cleaning pipe 25 is rotated by the hydraulic cylinder 17 so that the cleaning pipe 25 communicates with the two suction / discharge ports 2 is shown, but instead, as shown in FIG. During the cleaning, the cleaning pipe 25 may be configured to rotate and communicate only with the suction / discharge port 2 on one side by the extension operation of the hydraulic cylinder 17a. Also, as shown in FIG. It is also possible to use a cleaning device that slides up and down with a hydraulic cylinder 17b so that the cleaning pipe 25 communicates only with the suction port 2 on one side, and the mechanism for rotating or sliding the main body of the cleaning device is hydraulic. It is needless to say that not only the formula but also a mechanical drive type using a gear or the like may be used, and various changes may be made without departing from the scope of the present invention.

[0017]

[Effect of device]

 As described above, according to the oscillating valve type viscous fluid pump cleaning device of the present invention, between the fluid cylinder of the oscillating valve type viscous fluid pump and the oscillating pipe, a cleaning device rotatable about a horizontal axis is provided. The main body of the equipment is arranged, the connecting pipe that connects the fluid cylinder and the oscillating pipe, and the cleaning pipe are assembled in the cleaning device main body at the same radial position from the horizontal axis. Since the packing is filled and a high-pressure fluid pipe is connected to the other end of the cleaning pipe, the cleaning pipe is connected to the rocking pipe during cleaning so that the cleaning plug in the cleaning pipe is pressure-fed. It is possible to clean the inside of the oscillating tube without cleaning the connection between the oscillating tube and the oscillating tube, and then to clean the inside of the oscillating tube, and remove viscous fluid in a short time with a simple operation. It becomes possible to wash, and the cleaning workability can be greatly improved. Kill, exhibits an excellent effect and the like.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an outline of an embodiment of a cleaning device for an oscillating valve type viscous fluid pump of the present invention.

FIG. 2 is a schematic view showing a state when the cleaning device of FIG. 1 rotates.

FIG. 3 is a schematic view corresponding to FIG. 2 showing another embodiment of the present invention.

FIG. 4 is a schematic view corresponding to FIG. 2 showing still another embodiment of the present invention.

FIG. 5 is a sectional view showing an example of a conventional rocking valve type viscous fluid pump.

[Explanation of symbols]

 1 Hopper 2 Suction / Discharge Port 3 Fluid Cylinder 6 Swing Pipe 14 Cleaning Device Main Body 15 Horizontal Axis 17 Hydraulic Cylinder 23 Communication Pipe 25 Cleaning Pipe 26 Piping 27 Filling for Cleaning

Claims (1)

[Scope of utility model registration request] 1. A rocking valve type in which a rocking pipe housed in a hopper is rocked to the left and right so as to communicate with two fluid cylinders alternately, and a viscous fluid in the hopper is alternately sucked and discharged. A cleaning device main body rotatably supported in the left-right direction about a horizontal axis is disposed between the two fluid cylinders and the hopper in the viscous fluid pump, and the cleaning device main body is provided with the above-mentioned 2
Two connecting pipes communicating with one fluid cylinder and washing pipes parallel to the connecting pipes are installed so as to be located at the same radial position from the center of rotation, and a washing pad is provided inside the washing pipe. A cleaning device for a rocking valve type viscous fluid pump, characterized in that a structure for connecting a high pressure fluid pipe to the other end of the pipe and further comprising a device for rotating the cleaning device body.