JPH06262152A - Pipe washer - Google Patents

Abstract

PURPOSE:To increase the cleaning efficiency of the inner surface of a pipe by jetting high pressure water toward the inner surface of the pipe from a nozzle while introducing driving pressure water to the back surface of a piston and pulling a high pressure water feeding hose by the piston to make it advance. CONSTITUTION:When washing the inside of a transfer pipe 10 consisting of a transfer line from a production tank for cosmetics, foods, etc., to the packing of products, first a high pressure pump 4 is driven and a cleaning valve 35 is opened to feed high pressure water into a high pressure water feeding hose 3 to jet it from a nozzle 1. Next an advance valve 14 is opened and driving pressure water is fed to a back space 20 from a driving pressure water source 16 consisting of public waterworks, etc., through feeding piping 15 to make a piston 2 advance by its pressure. And while drawing out the high pressure water feeding hose 3 from a reel device 5 by the advance of the piston 5, the nozzle 1 is also made to advance to wash the inner surface of the transfer pipe 10 by the high pressure water jetted from the nozzle 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning apparatus which is moved along the inside of a pipe by fluid pressure.

[0002]

2. Description of the Related Art A pipe to be a subject of the pipe cleaning apparatus according to the present invention is, for example, a transfer pipe which constitutes a transfer line from a manufacturing tank for foods such as cosmetics, milk, cream, etc. to filling products, and the inside thereof. Is to be washed regularly.

Conventionally, when regularly cleaning such a transfer pipe, the transfer pipe constituting one transfer line is disassembled into pipes of about 2 meters, and the inside of the disassembled pipe is cleaned with a brush or the like. It is designed to be used for manual cleaning.

[0004]

However, in such a conventional cleaning method, it takes time and effort to disassemble one long transfer pipe into a plurality of pipes and reassemble them, and at the same time, to disassemble each disassembled pipe. There is a problem in that the work of cleaning the inside of the pipes one by one using a brush or the like is troublesome and the work efficiency is poor.

The present invention has been made in view of the above problems, and an object thereof is to provide an apparatus for automatically cleaning the inside of a pipe.

[0006]

The present invention is directed to a nozzle for injecting high-pressure water toward the inner surface of a pipe, a high-pressure water supply hose for supplying high-pressure water to the nozzle, and a high-pressure water supply hose connected to the pipe. A piston that is in sliding contact with the inner surface and a means that guides the driving pressure water to the back surface of the piston are provided.

According to a second aspect of the present invention, there is defined switching valve means for selectively communicating a back space defined on the back surface of the piston in the pipe with the driving pressure water source on the drain side, and a front surface of the piston in the pipe. An on-off valve means for opening and closing the front space, a means for detecting the sliding position of the piston with respect to the pipe, and releasing the front space according to the detected sliding position of the piston and supplying driving pressure water to the rear space. After advancing the piston, it is provided with control means for closing the front space and communicating the rear space with the drain side to retract the piston.

According to a third aspect of the present invention, a guide roller for slidingly contacting the inner surface of the pipe to hold the nozzle at the center of the pipe is provided, and the jet direction of the high pressure water jetted from the nozzle is slightly forward of the direction orthogonal to the pipe. It is a conical surface that expands toward.

[0009]

[Operation] By injecting high-pressure water from the nozzle toward the inner surface of the pipe, while guiding the driving pressure water to the back surface of the piston,
The hydraulic pressure of the drive pressure water causes the piston to advance along the inside of the tube while pulling on the high pressure water supply hose. When the piston moves in this way, the inner surface of the pipe is cleaned by injecting high-pressure water from the nozzle toward the inner surface of the pipe.

According to the second aspect of the invention, the piston is advanced by supplying the driving pressure water to the back space according to the sliding position of the piston, or the front space is closed and the back space is communicated with the drain side. By reciprocating the piston, the reciprocating motion of the piston can be automatically performed.

According to the third aspect of the present invention, the nozzle stably moves in the central portion of the pipe via the guide roller, and has a conical surface shape in which the high-pressure water spreads from the nozzle toward the front slightly from the direction orthogonal to the pipe. By spraying, high-pressure water collides with the inner surface of the pipe to enhance the cleaning effect of washing off the deposits.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a transfer pipe. The transfer pipe 10 constitutes a transfer line from a manufacturing tank for cosmetics, foods, etc. to filling products, and the inside thereof is regularly cleaned. It has become.

As shown in FIG. 2, the cleaning device for the transfer pipe 10 includes a nozzle 1 for injecting high-pressure water toward the inside of the transfer pipe 10, and a high-pressure water supply hose 3 for supplying high-pressure water to the nozzle 1. The high pressure water supply hose 3 is provided with a piston 2 for propelling the high pressure water supply hose 3 by receiving water pressure generated in the transfer pipe 10.

A guide roller 7 is fixed to the rear part of the nozzle 1 between the nozzle 1 and the piston 2. The guide roller 7 has a spherical outer peripheral surface 71 that is in sliding contact with the inner surface of the transfer tube 10, and the nozzle 1
Is held in the center of the transfer tube 10.

In the nozzle 1, an injection port 74 is annularly defined between an inner piece 72 and an outer piece 73. Spout 7
The cross section of No. 4 is formed in a wedge shape between the inner piece 72 and the outer piece 73, and the center line of the cross section is inclined by a predetermined angle with respect to the line orthogonal to the center line of the nozzle 1. As a result, the high pressure water sprayed from the nozzle 1 is transferred to the transfer pipe 10.
The configuration is such that it spreads out in a conical surface shape slightly toward the front from the direction orthogonal to.

By replacing the outer piece 73 and changing the cross section of the injection port 74, it is possible to adjust the ejection amount and power of the high pressure water ejected from the nozzle 1.

A high pressure pump 4 is provided as a high pressure water supply source for the nozzle 1. The high-pressure pump 4 sucks the cleaning liquid stored in the tank 37 through the opening / closing valve 39, and passes the cleaning liquid through the discharge side pipe 36 to the high-pressure water supply hose 3
Pump to.

The cleaning valve 3 is provided on the discharge side pipe 36.
5, the relief valve 38 is connected to the upstream side of the cleaning valve 35, and the relief valve 38 is opened when the pressure of the discharge side pipe 36 exceeds a predetermined value and is discharged from the high pressure pump 4. The cleaning liquid is returned to the tank 37.

A drain pipe 34 is connected to the discharge side pipe 36 on the downstream side of the cleaning valve 35, and a blow valve 33 for opening and closing the drain pipe 34 is interposed.

The tank 37 is provided with a sensor 41 for detecting the stored amount of the cleaning liquid. When the stored amount of the cleaning liquid drops to a certain extent by the control unit 6, the open / close valve 42 opens to replenish the tank 37 with water from the water pressure source 16. It is supposed to be done.

In FIG. 1, 5 is a reel device for automatically feeding and winding the high-pressure water supply hose 3.

As shown in FIGS. 3 and 4, the reel device 5 includes a drum-shaped hose reel 52 for winding the high-pressure water supply hose 3 and a feed roller 5 for feeding the high-pressure water supply hose 3.
3 and three sets of guide rollers 54, 55, 56 for guiding the high-pressure water supply hose 3. The hose reel 52, the feed roller 53, and the guide roller 54 are driven by the motor 51.

Between the feed roller 53 and the guide roller 55, the feed roller 53 is fed when the high-pressure water supply hose 3 is fed.
A control unit 57 for controlling the rotation of is provided. The control unit 57 detects the slack of the high-pressure water supply hose 3 via a sensor incorporated therein and sends it so as to keep the slack of the high-pressure water supply hose 3 constant when the high-pressure water supply hose 3 is unrolled or rewound. Roller 53
Is controlled so that the high-pressure water supply hose 3 is not unduly pulled.

The guide roller 54 reciprocates on a rail 58 provided in front of the hose reel 52 in synchronization with the rotation of the hose reel 52, and the high-pressure water supply hose 3 is wound in line with the hose reel 52. It is like this.

The piston 2 is formed of an elastic material such as rubber into a cylindrical shape, and a pair of land portions 21 and 22 which are slidably contacted with the inner surface of the transfer pipe 10 are integrally formed at both ends thereof, and the inner peripheral portion thereof has a high-pressure water supply hose. It is fixed to the outer peripheral portion of 3. Inside the transfer pipe 10, the back space 20 is defined by the back surface 28 of the piston 2, and the front space 30 is defined by the front surface 29 of the piston 2.

As a means for guiding the driving pressure water to the back surface 28 of the piston 2, an inlet pipe 11 is connected to the upstream end of the transfer pipe 10 through a joint 12, and the port 13 of the inlet pipe 11 is composed of, for example, public water supply equipment. A driving pressure water supply pipe 15 communicating with the driving pressure water source 16 is arranged, and a forward valve 14 for opening and closing the driving pressure water supply pipe 15 is arranged.

A seal 23 for inserting the high-pressure water supply hose 3 is provided at one end of the inlet pipe 11, and the back space 20 in the transfer pipe 10 is closed by the seal 23 and supplied to the back space 20 through the high-pressure water supply hose 3. The piston 2 is moved forward according to the amount of water to be discharged.

A drain pipe 18 that connects the port 17 of the inlet pipe 11 to the drain side is provided.
A drain valve 19 that opens and closes in the middle is provided.

In FIG. 1, reference numerals 24, 25 and 26 are flow rate adjusting valves which are manually adjusted.

An outlet pipe 31 is connected to the downstream end of the transfer pipe 10 for guiding the driving pressure water to the front surface 29 of the piston 2.
An outlet pipe 31 is provided as an on-off valve means for opening and closing the front space 30.
A retreat valve 32 for opening and closing is provided. Reverse valve 3
When 2 is closed, water sprayed from the nozzle 1 is collected in the front space 30, and the piston 2 is retracted according to the amount of water collected in the front space 30.

A control unit 6 is provided as means for automatically controlling the movement of the piston 2 in both reciprocating paths by utilizing water pressure by opening and closing the valves 14, 19, 32, respectively.

As a means for detecting the position of the piston 2 with respect to the transfer pipe 10, the high pressure water supply hose 3 has a piston 2
While the ring-shaped magnet 62 is fixed adjacent to, the limit switches 63 and 64 for detecting the magnet 62 are arranged at both ends of the transfer tube 10. The limit switches 63 and 64 are turned on when the magnet 62 approaches from the outside of the transfer tube 10, and turned off when the magnet 62 is separated.

The control operation of the control unit 6 will be described with reference to the timing chart shown in FIG.

At the start of cleaning, the high-pressure pump 4 is driven, and at the same time, the cleaning valve 35 is opened to inject high-pressure water from the nozzle 1.

When a predetermined time Tr elapses after the injection of high pressure water from the nozzle 1 is started, the forward valve 14 is opened, the supply of driving pressure water to the rear space 20 through the high pressure water supply hose 3 is started, and The piston 2 moves forward according to the amount of water supplied to the space 20. At this time, the high-pressure water supply hose 3 is automatically paid out from the reel device 5.

In this way, the nozzle 1 cleans the inner surface of the transfer tube 10 by advancing high pressure water toward the inner surface of the transfer tube 10 while advancing inside the transfer tube 10 via the piston 2. .

The nozzle 1 is connected to the transfer tube 1 via a guide roller 7.
The high-pressure water collides with the inner surface of the transfer pipe 10 by stably moving in the central part of 0 and jetting the high-pressure water from the nozzle 1 in the shape of a conical surface spreading slightly forward from the direction orthogonal to the transfer pipe 10. It is possible to enhance the cleaning effect by washing off the deposits.

When the piston 2 reaches the front end of the transfer pipe 10 and the limit switch 64 is turned on, the forward valve 1
4 is closed and the drain valve 19 is opened to discharge the driving pressure water accumulated in the back space 20, while the reverse valve 32 is closed to close the front space 30, and at the same time, the blow valve 33 is opened to release the high pressure water. The nozzle 1
Jet from.

When the retreat valve 32 is closed, water sprayed from the nozzle 1 collects in the front space 30, and the piston 2 is retracted according to the amount of water accumulated in the front space 30.
At this time, the high-pressure water supply hose 3 is automatically wound around the reel device 5.

When the piston 2 returns to the rear end portion of the transfer pipe 10 and the limit switch 63 is turned on, the high pressure pump 4 is stopped and the retreat valve 32 is opened, while the blow valve 33, the cleaning valve 35 and the drain valve are opened. The valves 19 are closed, and the cleaning of the transfer pipe 10 is completed.

[0042]

As described above, according to the present invention, in a pipe cleaning apparatus, a nozzle for injecting high pressure water toward the inner surface of a pipe, a high pressure water supply hose for supplying high pressure water to the nozzle, and a high pressure water supply hose. Since a piston that is connected to the inside of the pipe and slidably contacts the inner surface of the pipe and a means that guides the driving pressure water to the back surface of the piston are provided, the inside of the pipe can be efficiently washed with high-pressure jet water without disassembling the long pipe.

According to a second aspect of the present invention, there is defined switching valve means for selectively communicating a back space defined on the back surface of the piston in the pipe with the driving pressure water source on the drain side, and a front surface of the piston in the pipe. An on-off valve means for opening and closing the front space, a means for detecting the sliding position of the piston with respect to the pipe, and releasing the front space according to the detected sliding position of the piston and supplying driving pressure water to the rear space. After the piston is moved forward, it is equipped with control means that closes the front space and connects the back space to the drain side to retract the piston.Therefore, the reciprocating motion of the piston is automatically performed using water pressure. Labor saving is achieved.

According to a third aspect of the present invention, a guide roller for slidingly contacting the inner surface of the pipe to hold the nozzle at the center of the pipe is provided, and the jetting direction of the high pressure water jetted from the nozzle is slightly forward of the direction orthogonal to the pipe. Because it has a conical surface that expands toward
The high-pressure water collides with the inner surface of the pipe and the deposit is washed off, so that the cleaning effect can be enhanced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a pipe cleaning apparatus showing an embodiment of the present invention.

FIG. 2 is a sectional view of a nozzle, a piston and the like.

FIG. 3 is a side view of the reel device.

FIG. 4 is a plan view of the reel device.

FIG. 5 is a timing chart showing a control operation of the same.

[Explanation of symbols]

 1 Nozzle 2 Piston 3 High Pressure Water Supply Hose 4 High Pressure Pump 5 Reel Device 6 Control Unit 7 Guide Roller 10 Transfer Pipe 14 Forward Valve 15 Drive Pressure Water Supply Pipe 19 Drain Valve 20 Rear Space 30 Front Space 32 Backward Valve

Claims (3)

[Claims] 1. A nozzle for injecting high-pressure water toward the inner surface of a pipe, a high-pressure water supply hose for supplying high-pressure water to the nozzle,
A pipe cleaning device comprising: a piston connected to a high-pressure water supply hose and slidably contacting an inner surface of the pipe; and a means for guiding driving pressure water to a rear surface of the piston. 2. A switching valve means for selectively communicating a back space defined by a back surface of a piston in the pipe with a drive pressure water source and a drain side, and an opening / closing for opening and closing a front space defined by a front surface of the piston in the pipe. After the valve means, the means for detecting the sliding position of the piston with respect to the pipe, and releasing the front space according to the detected sliding position of the piston and supplying driving pressure water to the back space to advance the piston 2. The pipe cleaning apparatus according to claim 1, further comprising control means for closing the front space and communicating the rear space with the drain side to retract the piston. 3. A conical surface provided with a guide roller for slidingly contacting the inner surface of the pipe to hold the nozzle at the center of the pipe, and expanding the injection direction of the high-pressure water jetted from the nozzle slightly forward of the direction orthogonal to the pipe. The pipe cleaning device according to claim 1 or 2, wherein the pipe cleaning device has a shape.