JPH0543599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cleaning device for a filling machine such as a milk filling machine, which cleans the inside of a storage tank, a filling spout, etc.

(Prior technology) Special Publication in 1978 as a cleaning device for filling machines
There is one described in Publication No. 38228.

This device is applied as a cleaning device in a flowing down liquid level regulating filling machine.

In the above-mentioned flow-down liquid level regulating filling machine, when a can, bottle, etc. is separated from the filling spout, a small amount of liquid flows out from the filling spout, staining the top surface of the lifter and reducing the yield.

On the other hand, a vacuum type liquid level regulating filling machine maintains a vacuum inside the storage tank and does not allow the liquid to flow out other than into the can or bottle, so it can accurately regulate the liquid level and has the advantage of good yield.

(Problems to be Solved by the Invention) There was a problem in how to adapt the cleaning device to a vacuum type liquid level regulating type filling machine.

(Means for Solving the Problems) The present invention is a device adapted to a vacuum type liquid level regulating type filling machine, in which the upper end portion is screwed into a mounting pipe member fixed to the upper wall of the storage tank. A cylindrical part in which a filling pipe is suspended and a liquid level control mechanism is provided, a cylindrical part surrounding the filling pipe with a circumferential distance, and an injection part connected to the cylindrical part and having a large number of injection holes in the peripheral wall. The lower end valve part of the valve rod disposed in the filling pipe can be tightly closed to the lower end opening of the washing cylinder, and one end can be freely connected to the washing liquid tank via a liquid supply pump. The other end of the liquid pipe communicates with the upper end of the filling pipe, one end of which is connected to the vacuum pump, and the other end of the vacuum tube is attached to the mounting pipe member, and the liquid supply pipe side switching valve is interposed in the liquid supply pipe; A vacuum tube side switching valve interposed in the vacuum tube is connected to the vacuum tube side by a connecting pipe, and by switching the liquid supply pipe side switching valve, cleaning can be freely distributed alternately to the liquid supply pipe side and the vacuum tube side via the connecting pipe, A cleaning cap is attached to a plurality of plugging ports vertically installed on the bottom wall of the storage tank, one end of a conduit is attached to each of these cleaning caps, and the other end is attached to a manifold ring pipe, and the conduit is connected to the manifold ring pipe. The present invention provides a cleaning device for a filling machine, characterized in that a recovery pump is connected.

(Function) The valve rod is raised to close the lower end opening of the washing cylinder,
Operate the switching valve on the vacuum tube side to isolate it from the vacuum source, operate the switching valve on the liquid supply pipe side to send the cleaning liquid to the liquid supply pipe and the vacuum tube, and wash the inside of the filling pipe with the cleaning liquid that flows in from the liquid supply pipe. At the same time, cleaning liquid is jetted toward the upper part of the storage tank from the injection hole of the injection part of the cleaning cylinder, and the cleaning liquid sent from the vacuum tube cleans the inside of the mounting pipe member and the outer periphery of the filling pipe. The amount of cleaning liquid increases in the storage tank, passes through the plug, and is washed.
It passes through the manifold ring pipe and is collected at an appropriate location via a collection pump.

(Example) Embodiments of the device of the present invention will be described with reference to the drawings.

The upper end 5a is screwed into the mounting pipe member 4 which is fixed via the presser plate 3 to the mounting part 2 fixed to the central top of the upper wall part 1a of the storage tank 1, and the filling pipe 5 is suspended inside the storage tank 1. A cleaning tube 8 is provided at the bottom of the filling tube 5, which is made up of a cylindrical section 6 surrounding the filling tube 5 with a circumferential gap therebetween, and an injection section 7 connected to the upper side of the cylindrical section 6. A valve rod 9 is disposed at the cylindrical portion 6, and the lower end opening 11 of the cylindrical portion 6 can be closed tightly by the lower end valve portion 10 by raising the valve scale 9.

The injection part 7 has an outer circumferential surface substantially similar in shape to the circumferential surface of a sphere with the top and bottom cut off, and has a large number of injection holes 12 on the circumferential wall.
12... are provided through the nozzle holes 12, 12...
are formed so as to spray the cleaning liquid toward the inner surface of the upper wall portion 1a and the upper inner surface of the lower wall portion 1b of the storage tank 1.

The lower end opening 11 of the cylindrical portion 6 is set at a required distance below the lower end opening 5b of the filling tube 5.

Further, a liquid level control mechanism is provided, which includes an electrode 13 for upper limit control of liquid level and an electrode 14 for lower limit control of liquid level, which are inserted through the mounting pipe member 4 and suspended in the storage tank 1. A vacuum tube 15 has one end attached to the projecting tube portion 4a, and the other end thereof is connected to a vacuum pump 16 via an intermediate tank 16a.

A continuous joint pipe 18 is fixed to the upper end of the filling pipe 5 via a connecting ring member 17, and one end of the liquid supply pipe 19 is attached to the protruding pipe portion 18a on one side of the continuous joint pipe 18. It is connected to the liquid supply pump 20.

Furthermore, a switching nut 22 is provided which is screwed into the holding cylinder 21 connected to the connecting pipe 18.
2 is screwed up and down, and the valve rod 9 can be adjusted up and down.

The liquid supply pipe 19 is equipped with a liquid supply pipe side switching valve 23 and an automatic liquid supply valve 24, and the vacuum tube 15 is equipped with a vacuum pipe side switching valve 25, which is a liquid supply pipe side switching valve. 23 and a vacuum pipe side switching valve 25 are connected by a connecting pipe 26.

An air purge pipe 28 is attached to the mounting pipe section 27 at the upper end 1a of the storage tank 1.

The bottom wall 1c of the storage tank 1 has a plurality of plugging ports 29,
A cleaning cap 30 is attached to each of these openings 29, 29..., and the upper end of the conduit 32 is attached to a cap support member 31. A corresponding conduit 3 is inserted into the mounting hole 34a of the manifold ring pipe 34 provided.
2, 32... are attached to one side of the manifold ring pipe 34, and a conduit 35 is attached to one side of the manifold ring pipe 34.
A manual valve 36 is installed in the pump, and a recovery pump 37 is installed in the
It is connected to.

A cleaning cap 30 is attached to each opening 29, 29...
When installed, the lower end opening 38a of the liquid filling cylinder 38 of the filling port 29 opens, and the liquid in the storage tank 1 is transferred to the liquid filling cylinder 38.
8, enters the cleaning cap 30 through the lower end opening 38a, rises to clean the constituent parts of the plug 29, and flows into the conduit 32.

The liquid supply pump 20 is connectable to a cleaning liquid tank 39.

When filling the milk, etc., the cleaning tube 8 is removed, the air purge tube 28 is removed, the mounting tube section 27 is covered with a blind lid, the cleaning cap 30 is removed from the filling port 29, and the vacuum pump 16 is activated to remove the air purge tube 28 through the vacuum tube 15. The inside of the storage tank 1 is made into a vacuum state, and the liquid to be filled, such as milk, passes through the liquid supply pipe 19 and flows down the inside of the filling pipe 5, enters the storage tank 1 through the lower end opening 5b, and passes through the lifter 4.
It is formed so that milk, etc., can be filled into the bottle or can which is raised with the opening 29 and engaged with the filling opening 29.

The apparatus of the present invention is constructed as described above and operates as follows.

First, raise the valve rod 9 and open the lower end opening 1 of the cleaning tube 8.
1 is closed, the vacuum tube side switching valve 25 is switched to isolate it from the vacuum pump 16 side, and the liquid level upper limit control electrode 1 is closed.
3. Switch the changeover switch (not shown) of the liquid level lower limit control electrode 14 from the filling side to the cleaning side, set the liquid supply pipe side changeover valve 23 to alternately switch with a timer (not shown), and turn the liquid supply pump 20 is connected to the cleaning liquid tank 37, and the cleaning liquid is circulated through the liquid supply pipe side switching valve 23 to the liquid supply pipe 19 side and through the connecting pipe 26 to the vacuum pipe 15 side.
is activated to cause the cleaning liquid to flow down from the liquid supply pipe 19 to the filling tube 5, and at the same time, the cleaning liquid is caused to flow into the attachment tube member 4 from the vacuum tube 15 and flow down the outer periphery of the filling tube 5.

The cleaning liquid flowing down inside the filling pipe 5 rises inside the cylindrical part 6 from the lower end opening 5b, and eventually reaches the nozzle hole 1 of the nozzle part 7.
A cleaning liquid is ejected from 2 and 12 in the direction of the arrow to wash the inner surface of the upper wall portion 1a and the inner surface of the lower wall portion 1b.

The liquid supply pipe side switching valve 23 is switched by a timer to send the cleaning liquid alternately to the liquid supply pipe 19 side and the vacuum tube 15 side.

When the cleaning liquid in the storage tank 1 reaches the liquid level A, the recovery pump 37 is activated by a signal from the liquid level control mechanism.

At the time of washing, the recovery pump 37 and the liquid supply pump 20 are operated while managing the washing liquid to maintain the liquid level A.

When the recovery pump 37 operates, the cleaning liquid in the storage tank 1 passes through the respective plugs 29, 29, . It is collected at the desired location.

In this case, when the liquid level in the storage tank 1 decreases, the liquid level control mechanism operates and sends a signal to the recovery pump 37.
to stop.

When the recovery pump 37 stops, the level of the cleaning liquid in the storage tank 1 rises and reaches the liquid level A again, and the recovery pump 37 is activated, and when the liquid level falls in this way, the recovery pump 37 stops, When the liquid level A is reached, the recovery pump 37 is activated and the operation is repeated.

When the cleaning is completed, the cleaning liquid in the storage tank 1 is completely recovered by operating the recovery pump 37.

Examples of the cleaning liquid include warm water, hot water, hot acid solution, hot alkaline liquid, chlorine water, chlorine water, etc., and these cleaning liquids are used alone or in combination.

The cleaning operation is performed while repeating the above operation from the start signal to the end signal for each cleaning solution.

It should be noted that only during hot water washing, the liquid level control mechanism is deactivated so as not to leave any hot acid or alkaline liquid adhering to the inner surface of the storage tank 1, and the recovery pump is continuously activated by a timer.

(Effects of the Invention) The present invention attaches a cleaning tube to the filling pipe of a vacuum type liquid level control type filling machine, allows the cleaning liquid to alternately flow through the liquid supply pipe and the vacuum tube, and uses the cleaning liquid passing through the liquid supply pipe system. The inside of the filling pipe and the inner surface of the storage tank are cleaned, and the inside of the attached pipe member and the outer periphery of the filling pipe are washed with the cleaning liquid that passes through the vacuum tube system.The recovery pump is operated via the cleaning cap attached to each filling port to remove each filling. Since the mouth can be washed, all parts and members of the filling machine that come in contact with the filling liquid such as milk can be washed.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the entire arrangement of the main parts of the apparatus of the present invention, and FIG. 2 is an enlarged cross-sectional view of the main parts thereof. 1...Storage tank, 5...Filling pipe, 6...Cylindrical part, 7
... Injection part, 8 ... Washing cylinder, 9 ... Valve rod, 10 ...
... lower end valve part, 11 ... lower end opening, 12 ... nozzle hole,
13... Electrode for upper limit control of liquid level, 14... Electrode for lower limit control of liquid level, 15... Vacuum tube, 16... Vacuum pump, 19... Liquid supply pipe, 20... Liquid supply pump, 23
...Liquid supply pipe side switching valve, 25...Vacuum tube side switching valve,
26... Connecting pipe, 29... Clogged port, 30... Washing cap, 34... Manifold ring pipe, 37... Recovery pump, 39... Washing liquid tank.

Claims (1)

[Claims] 1. A cylinder whose upper end is screwed into a mounting pipe member fixed to the upper wall of the storage tank so that the filling pipe is suspended in the storage tank and is provided with a liquid level control mechanism, and which surrounds the filling pipe with a circumferential distance. A cleaning cylinder consisting of a cylindrical part and an injection part connected to the cylindrical part and having a large number of injection holes on the peripheral wall is attached, and the lower end valve part of the valve rod disposed in the filling pipe is connected to the lower end opening of the cleaning cylinder. The other end of the liquid supply pipe, which can be tightly closed and freely connected to the cleaning liquid tank at one end via a liquid supply pump, communicates with the upper end of the filling pipe. The liquid supply pipe side switching valve installed on the mounting pipe member and interposed in the liquid supply pipe and the vacuum tube side switching valve interposed in the vacuum tube are connected by a continuous pipe, and cleaning is performed by switching the liquid supply pipe side switching valve. The liquid is allowed to alternately flow through the liquid supply pipe and the connecting pipe to the vacuum tube, and cleaning caps are attached to a plurality of plugging ports vertically installed in the bottom wall of the storage tank, and each of the conduit pipes is attached to each of the cleaning caps. Attach one end and the other end to the manifold ring pipe.
A cleaning device for a filling machine, characterized in that a recovery pump is connected to the manifold ring pipe via a conduit.