JPH0534777Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial technical field] The present invention relates to an improvement of an automatic rotary cleaning device that performs cleaning while automatically and continuously changing the jetting direction using the reaction force of high-pressure water jetting. be.

[Background Art of the Invention] Various structures have been proposed and put into practical use for automatic rotary cleaning devices that automatically rotate by the reaction force of high-pressure water jets. Such automatic rotary cleaning devices are roughly classified into two types based on their functions.

One of them is one in which a nozzle rotates two-dimensionally around a tube axis that supplies high-pressure water, mainly within a plane perpendicular to the tube axis. Such a device can be found, for example, in Japanese Utility Model Publication No. 17654/1983. The outline will be described based on the description in Japanese Utility Model Publication No. 17654/1983.

As shown in FIGS. 4 and 5, when high-pressure water is sent to the conduit 50 by a high-pressure water generating device (not shown), the high-pressure water passes through the fluid passage 51, the passage 52, and the fluid passage 54 of the rotating body 53, and then reaches the nozzle 55. More sprayed. Due to this injection of high-pressure water, the nozzle 55 is rotated by the moment generated by the amount of eccentricity with respect to the rotating body 53, that is, by the reaction force of the injection. The pump case 57 or case 58 also rotates together with the rotating body 53. On the other hand, the tube shaft 59 is in a stationary state, and therefore the pump shaft 60 fitted to the lower end of the tube shaft 59 is also in a stationary state. That is, by rotating the pump case 57 around the fixed pump shaft 60, this hydraulic pump device 59 performs a pumping action, and its fluid passages 60, 6
0', the pressure oil passage 60,
A throttle valve 61 is provided between the valves 60' and the flow rate thereof is adjusted, so that the rotation of the pump is adjusted and, in turn, the rotation of the nozzle 55 is controlled.

The other type is one in which the nozzle rotates around the tube axis and also rotates around the axis of an arm that protrudes in the radial direction of the tube axis.As seen from the tube axis, the nozzle rotates on its own axis. It is configured to revolve and rotate in three dimensions. Such devices can be found in Japanese Patent Publication No. 47-23472, Japanese Utility Model Publication No. 52-32625, and others. Tokuko Showa 47-23472
To give an overview based on the description in the publication, as shown in FIGS. 6 and 7, 70 is a head body which has a rotatable tube shaft 71 in the center, and a head body 70 is located at the rear end of the body 70. A joint 73 is provided to connect the high-pressure water supply piping means, and a pair of nozzle arms 74, 74 are provided at the front end of the main body 70, and a pair of nozzle arms 74, 74 are attached to opposite sides of the tube shaft 71. The nozzle 7 of each arm 74, 74 is provided so as to protrude from a cover 75 that rotatably covers the
Due to the reaction force of the water jetted from 6, the arm 7
4 and 74 in a direction perpendicular to the tube axis 71, and satellite rotation in the same direction as the tube axis 71.

[Problems with Background Art] By the way, the conventional device described above is, for example,
-23472 has a problem that the tubular shaft passes through the center of the hydraulic pump, which increases the size of the hydraulic pump and the entire device, or that the tubular shaft has a thin wall shape. It had disadvantages such as problems with pressure resistance. Furthermore, the device described in Japanese Utility Model Publication No. 52-32625 also had the problem of being large in size because the hydraulic pump was disposed on the side. On the other hand, the conventional devices are basically used under normal pressure or atmospheric pressure, and therefore no consideration has been given to use in pressurized or reduced pressure environments. As a result, hydraulic oil or liquid leaks from the sealing portion, which sometimes impairs the function of the automatic rotary cleaning device. That is, the hydraulic oil of the hydraulic pump that controls the rotation speed of the nozzle leaks, resulting in a decrease in the rotation speed control function, and the leaked hydraulic oil stains the object to be cleaned.
Additionally, cleaning fluid (typically water) may leak and damage bearings and seals, resulting in malfunctions such as poor rotation and interference with rotational control, resulting in pressurization or The function of the automatic rotary cleaning device was not fully demonstrated in a reduced pressure environment.

[Purpose and outline of the invention] Therefore, the purpose of this invention is to provide a device that is small in size and can be easily inserted and taken out through a particularly small-diameter cleaning hole, and that also functions as an automatic rotating cleaning device even in pressurized or depressurized environments. The purpose of the present invention is to provide a cleaning device that can be used with the same simple operation as conventional devices.

In order to achieve the above object, the present invention has the following configuration. In other words, the pressurized cleaning water flowing inside the tubular shaft built into the head body is guided through several arm bodies protruding from the side of the tubular shaft to the several nozzles of the nozzle holder fitted into each arm body. The nozzle holder is rotated around the arm body by the injection reaction force emitted from each nozzle, and the nozzle holder is fixed to the head body via a rotating bevel gear that engages with a fixed bevel gear on the head body. The hydraulic pump is configured to rotate around a tubular shaft along a bevel gear, and is engaged with the tubular shaft.
An automatic system configured to allow oil to flow through a circulation path consisting of an oil inlet path and an oil amount adjustment valve that connects both paths, and to adjust the rotation speed of the nozzle holder based on the difference in the amount of oil flowing into the oil outlet path and oil inlet path. In a rotary cleaning device, a rotating body disposed surrounding a tubular shaft, a flow path locked to the rotating body and formed in the center, and a flow path formed in the center of the tubular shaft communicate with each other. one or more arm bodies, a nozzle holder rotatably fitted to the arm body, and a plurality of nozzle holders locked to the nozzle holder and communicating with the flow passage of the tubular shaft via the flow passage of the arm body. and a hydraulic pump disposed at the lower end of the tubular shaft, the lower end of the tubular shaft and the upper end of the drive shaft of the hydraulic pump are relatively unrotatably engaged, and the case of the hydraulic pump is The object can be effectively achieved by connecting and fixing the rotating body and interposing a sealing member between the drive shaft and the case.

In the following, the invention will be explained in more detail on the basis of a preferred embodiment shown in the drawings.

[Embodiment of the invention] High-pressure water sent from a pump device (not shown) is passed from the joint 15 to the flow path 16 of the tubular shaft 1 by means of piping (not shown) (usually a rigid pipe such as a steel pipe).
supplied to The flow path 16 passes from a through hole 17 bored in the radial direction of the tubular shaft 1 to the arm 2 through a through hole 19 of an annular member 18 fitted around the tubular shaft 1.
It communicates with the nozzle 4 through a through hole 21 formed in the radial direction of the arm 2 and through a through hole 23 of an annular member 22 fitted around the arm 2. On the other hand, the tubular shaft 1 has a sealing member 24,
25 is fitted between the tubular shaft 1 and the rotating body 26 to effectively seal the leakage of high pressure water supplied from the flow path 16 to the flow path 20. Similarly, the sealing members 27 and 28 interposed between the arm 2 and the nozzle holder 3 seal the leakage of high-pressure water supplied from the flow path 20 of the arm 2 to the nozzle 4.

The high-pressure water sent from the pump (not shown) is injected from the nozzles 4, 4. nozzle 4,
4 is arranged eccentrically from the center of the arm 2, as shown in FIG.
The reaction force generated in the nozzles 4, 4 when high-pressure water is injected from the nozzle acts to rotate the nozzle holder 3 around the arm 2. Rotating the nozzle holder 3 means rotating the rotating bevel gear 29 formed integrally with the nozzle holder 3.

The rotating bevel gear 29 is engaged with a fixed bevel gear 5 configured to be fixed to the tubular shaft 1 , and the rotating bevel gear 2
9 rotates around the tubular shaft 1 along the fixed bevel gear 5. At this time, the arm 2 is guided by the rotating bevel gear 29 that rotates while rotating along the fixed bevel gear 5, and the arm 2 pivots around the tubular shaft 1. As a result, the rotating body 26 rotates concentrically around the tubular shaft 1. Rotate to .

Looking at the nozzles 4, 4, they rotate around the arm 4 and at the same time around the tubular shaft 1.
That is, by rotating and revolving, the high-pressure water jetted from the nozzles 4, 4 is radiated in all directions.

Regarding the hydraulic pump 6, the upper end 11 of the drive shaft 11 and the lower end 10 of the tubular shaft 1 are fitted together so that they do not rotate relative to each other. Therefore, as described above, since the tubular shaft 1 is in a stationary state while the washing apparatus is in operation, the drive shaft 11 of the hydraulic pump 6 is also in a stationary state. However, the pump case 13 is integrally connected and fixed with the rotating body 26, and when the rotating body 26 rotates around the tubular body 1 as high-pressure water is jetted, the pump case 13 rotates around the drive shaft 11. do. Various types of rotary pumps can be used as the hydraulic pump 6, and from the viewpoint of miniaturization, a trochoid pump or a gear pump can be effectively used, but the pump is not limited thereto. anyway,
Since the pump action is achieved through relative rotation between the rotor 30 connected to the drive shaft 11 and the stator 31 connected to the pump case 13, the drive shaft 11 is fixed. Even when the pump case 13 is rotated, the hydraulic pump 6 performs a pumping action. Hydraulic oil discharged from the hydraulic pump 6 enters an oil outlet passage 7 and circulates through an oil passage configured as a closed circuit that returns through an oil amount adjustment valve 9 from an oil input passage 8 to the hydraulic pump 6. The oil amount adjustment valve 9 disposed in the oil passage is
By adjusting and restricting the amount of hydraulic oil discharged from the oil outlet passage 7 to the oil input passage 8, the pressure in the oil outlet passage 7 is increased, and as a result, the required power for operating the hydraulic pump 6 is increased. have That is, the hydraulic pump 6, which is driven by the reaction force of high-pressure water injected from the nozzles 4, acts to appropriately brake the rotation of the nozzles.

In this way, the rotation of the nozzles 4, 4 is appropriately controlled, and effective high-pressure water cleaning is performed.However, as a recent trend, for example, in chemical polymerization cans, polymerization and cleaning are carried out while the polymerization can is closed.・Cases involving production processes such as polymerization are increasing, and in such cases, the cleaning device according to the present invention is naturally permanently installed inside the polymerization tank and placed under high temperature and high pressure or reduced pressure. Alternatively, operating for cleaning under the conditions described above is made unnecessary. Therefore, this cleaning device must be constructed to withstand use under high temperature, high pressure, and reduced pressure.

The most important point is high pressure water leak and hydraulic pump 6
leakage of hydraulic oil, and intrusion of atmospheric gas inside the can into the cleaning equipment.

As a countermeasure for this, in the present invention, first, a packing box 32 formed between the drive shaft 11 and the pump case 13 is used to prevent leakage of hydraulic oil from the hydraulic pump 6.
A sealing member that effectively acts on both pressurization and depressurization is inserted inside. An example of such a sealing structure is shown in FIG. That is, a plurality of sealing members 14 interposed between the hydraulic pump 6 and the drive shaft 11 are arranged between the top adapter 40 on the hydraulic pump 6 side and the bottom adapter 41 on the upper end side of the drive shaft 11 in the packing box 32. A lip seal 42 is fitted, and the lip seal 42 is attached to the top adapter 40.
The one adjacent to the one has a lip that opens upward, and the other one has a lip that opens downward. This type of seal structure is manufactured by Nippon Valqua Industries Co., Ltd.'s "Wilson Seal".
Those sold under the trade name can be effectively used.

Furthermore, the sealing members for rotating parts, which conventionally used sealing members mainly consisting of O-rings,
In terms of reliability when pressurization and depressurization are used together, it is not necessarily a preferable sealing material. Therefore, the bearings 33 and 3 are mainly used at the sealing part between the tubular shaft 1 and the rotating body 26.
A sealing member 3 disposed as a sealing member of No. 4
5, 36, 37 and the sealing member 38 in the packing box 32 from the conventional O-ring to an annular sealing member with an X-shaped cross section.
It has been confirmed that this product works extremely effectively against both pressure reduction and has been able to exhibit a stable sealing effect over a long period of time.

[Effects of the invention] As detailed above, in the present invention, the pressurized washing water flowing in the tubular shaft built into the head body is transferred to each arm body through several arm bodies protruding from the side of the tubular shaft. The nozzle holder is guided to the several nozzles of the nozzle holder that is fitted into the head body, and the nozzle holder is rotated around the arm body by the jet reaction force ejected from each nozzle. The hydraulic pump is configured to rotate around a tubular shaft along a fixed bevel gear, and the hydraulic oil filled in the hydraulic pump engaged with the tubular shaft is moved through the pump's oil outlet passage, oil inlet passage and In an automatic rotary cleaning device configured to allow oil to flow through a circulation path consisting of an oil amount adjustment valve that connects both paths, and to adjust the rotation speed of a nozzle holder based on the difference in the amount of oil flowing into an oil outlet path and an oil inlet path. , one or a plurality of rotary bodies disposed surrounding a tubular shaft, and a flow passage formed at the center of the rotary body and connected to the flow passage formed at the center of the tubular shaft. an arm body, a nozzle holder rotatably fitted to the arm body, and a plurality of nozzles that are locked to the nozzle holder and communicated with the flow passage of the tubular shaft via the flow passage of the arm body; a hydraulic pump disposed at a lower end position of the tubular shaft, the lower end of the tubular shaft and the upper end of the drive shaft of the hydraulic pump are relatively unrotatably engaged, and the case of the hydraulic pump and the rotating body Since the drive shaft and the case are connected and fixed, and a sealing member is interposed between the drive shaft and the case, it is small and easy to take in and out through a small-diameter cleaning hole, and can be used in pressurized or depressurized environments. It is possible to obtain a cleaning device which performs the original function as an automatic rotary cleaning device and which can be used with the same simple operation as conventional devices, thereby achieving increased efficiency in cleaning work.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view of a preferred embodiment of the present invention;
Fig. 2 is an external view of the main part of Fig. 1, Fig. 3 is a detailed view of the main part of Fig. 1, Fig. 4 to Fig. 7 are diagrams showing conventional equipment, and Fig. 5 is a diagram of the main part of Fig. 1. It is a XX sectional view in the figure. 1... Tubular shaft, 2... Arm, 3... Nozzle holder, 4... Nozzle, 5... Fixed bevel gear, 6...
Hydraulic pump, 7...Oil outlet path, 8...Oil inlet path, 9...
...oil amount adjustment valve, 10...lower end, 11...drive shaft,
12... Upper end, 13... Case, 14... Sealing member, 16... Channel, 20... Channel, 26... Rotating body, 29... Rotating bevel gear, 32... Packing box,
33... bearing, 34... bearing, 35... annular sealing member, 36... annular sealing member, 37... annular sealing member, 38... annular sealing member, 40... top adapter, 41... ...Bottom adapter, 42...Lipstick.

Claims (1)

[Claims for Utility Model Registration] (1) Pressurized washing water flowing into the tubular shaft built into the head body is directed to each arm body through one or more arm bodies protruding from the side of the tubular shaft. The nozzle holder is guided to the plurality of nozzles of the nozzle holder to be fitted, and the nozzle holder is rotated around the arm body by the jet reaction force jetted from each nozzle, and the nozzle holder is engaged with the fixed bevel gear of the head body. The head body is configured to rotate around a tubular shaft along a fixed bevel gear of the head body via a rotating bevel gear, and the hydraulic oil filled in a hydraulic pump engaged with the tubular shaft is pumped by the rotational force of the tubular shaft. The oil flows through a circulation path consisting of an oil outlet path, an oil inlet path, and an oil amount adjustment valve that connects the two paths, and the rotation speed of the nozzle holder is adjusted by the difference in the amount of oil flowing into the oil outlet path and oil inlet path. In the configured automatic rotating cleaning device, a rotating body disposed surrounding a tubular shaft;
one or more arm bodies that are engaged with the rotating body and communicate with a flow passage formed in the center and a flow passage formed in the center of the tubular shaft; and one or more arm bodies that are rotatably fitted into the arm bodies. a nozzle holder, a plurality of nozzles that are locked to the nozzle holder and communicated with the flow path of the tubular shaft via the flow path of the arm body, and a hydraulic pump disposed at the lower end of the tubular shaft. The lower end of the tubular shaft and the upper end of the drive shaft of the hydraulic pump are engaged in a relatively non-rotatable manner, the case of the hydraulic pump and the rotating body are connected and fixed, and the drive shaft and the case are connected to each other. An automatic rotary cleaning device characterized by having a sealing member interposed therebetween. (2) The sealing member 14 interposed between the hydraulic pump case 6 and the drive shaft 11 is located between the top adapter 40 on the hydraulic pump 6 side and the bottom adapter 41 on the upper end side of the drive shaft 11 in the packing box 32. A plurality of lip gaskets 42 are fitted in the top adapter 40, and the lip gaskets 42 are configured such that the lip of the lip gasket adjacent to the top adapter 40 opens upward and the lip of the other lip gaskets 42 opens downward. The automatic rotary cleaning device according to item 1. (3) A utility model registration application in which the tubular shaft 1 and the rotating body 26 are supported by bearings 33 and 34, and an annular sealing member with an X-shaped cross section is fitted between the tubular shaft 1 and the rotating body 26. The automatic rotary cleaning device according to scope 1. (4) The automatic rotating cleaning device according to claim 1, wherein the fixed bevel gear is integrally formed with the upper cover and fixed to the tubular shaft. (5) The automatic rotating cleaning device according to claim 1, wherein the rotating bevel gear is integrally formed with the nozzle holder.