JPH02304285A - Operating position detecting device for multipoint pipe-line automatic switching device of liquid treating plant - Google Patents

Abstract

PURPOSE:To prevent the malfunction of an oscillating plate and secure the switching of a pipeline by detecting the linear reciprocating motion with the predetermined strokes and the rotary oscillation of the oscillating plate with a non-contact switch, and controlling the rotary oscillating position of the oscillating plate with a stopper block. CONSTITUTION:An oscillating plate 16 to which connecting pipes 17a, 17b are fixed is separated from a fixed plate 10 to which pipes 11a-11d are fixed with the extension of a fluid pressure cylinder 23, and when a non-contact switch 55 detects that the oscillating plate 16 is separated from the fixed plate 10 by the predetermined strokes, it is stopped. Next, the oscillating plate 16 is turned at 180 deg. by an oscillating actuator 24, and when the non-contact switch 55 detects that the oscillating plate 16 reaches the rotary position, supply of the compressed air to the oscillating actuator 24 is shut to be stopped, and while a rod 51 of the oscillating plate 16 abuts on a stopper block 52 of the fixed plate 10 to control the position. Thereafter, the fluid pressure cylinder 23 is reduced for operation to press the oscillating plate 16 to the fixed plate 10, and the connecting relation of the connecting pipes 17a, 17b against the pipes 11a-11d is switched. Switching of the connection of the pipeline can be thus secured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an operating position detection device for a multi-point pipe automatic switching device in a liquid processing plant for foods, medicines, etc.

[Prior Art] In liquid processing plants for foods, medicines, etc., pipes need to be cleaned and sterilized with cleaning liquid, steam, etc. on a regular basis or as needed. The connections of the channels are switched to supply cleaning liquid and steam.

The above-mentioned multi-point pipe switching device has the following features: (1) A rocking plate to which a normally U-shaped connecting pipe is attached is linearly reciprocated and rotated relative to a fixed plate to which a plurality of pipes constituting a multi-point pipe are attached. However, the connection of the conduit is changed by
(Refer to Publication No. 5309), if for some reason the rocking plate does not complete the specified stroke before performing the next operation, the pipe may not be able to be switched, or the seal at the pipe connection may become insufficient. , processing liquid may leak from pipe connections.

Leakage at the pipe connection is undesirable in the case of food products, medicines, etc., since there is a risk of secondary infection of the treated liquid by microorganisms.

[Problem to be Solved by the Invention] The problem to be solved by the present invention is to provide and provide an operation position detection device for a multi-point pipe automatic switching device that detects the linear reciprocating motion and rotational oscillation position of a oscillating plate. There is a particular thing.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a fixed plate to which a plurality of pipes constituting a multi-point conduit are attached, and a U-shaped plate that opens opposite to the openings of these pipes. a rocking plate to which a connecting pipe is attached, and a drive unit for linearly reciprocating and rotationally rocking the rocking plate with respect to the fixed plate, the rocking plate having a linear reciprocating motion and rotary rocking relative to the fixed plate. In a multi-point pipe automatic switching device in a liquid processing plant that switches the 'vL connections of multi-point pipes by.

Either one of the fixed plate and the swinging plate is provided with a rod, and the other is provided with a stopper block that comes into contact with the rod to regulate the rotational swing position of the swinging plate, and the fixed plate is provided with a stopper block that allows the swinging plate to reciprocate in a straight line. The present invention is characterized in that a proximity switch for detecting the moving position and a proximity switch for detecting the rotational oscillation position of the oscillating plate are respectively provided in the drive section.

C Effect 1 When the swinging plate is moved away from the fixed plate by the drive unit, a proximity switch provided on the fixed plate detects that the swinging plate has been spaced apart from the fixed plate by a predetermined stroke.

After the above position is detected by the proximity switch, when the oscillating plate is rotated, the rod provided on the fixed plate or the oscillating plate comes into contact with the rod provided on the other plate, and the oscillating plate is rotated. The rotational swing position is accurately regulated.

This rotational swing position is detected by a proximity switch provided in the ffi moving part.

Next, when the rocking plate is driven in the direction approaching the fixed plate,
A proximity switch provided on the fixed plate detects that the connection pipe and the pipe are connected, the connection of the multi-point conduit is switched, and the swing plate has stroked by a predetermined amount.

The operating positions of the above-mentioned linear reciprocating motion and rotational oscillation of the oscillation plate are detected by each proximity switch, so malfunction of the oscillation plate may result in inability to switch the pipe connection or leakage from the pipe connection. can be reliably prevented.

[Embodiment] FIGS. 1 to 6 show embodiments of the present invention, and this multi-point pipe automatic switching device includes a switching part l for switching the connection of pipes,
A drive section 2 that drives the switching section l. A cleaning device 3 that cleans drippings from the pipe connection, and a sealing mechanism 4 that seals the pipe connection. Leakage detection device for detecting leakage at pipe connections 5. It includes a position detection device that detects the position of the switching section 1 and a control device 7 that controls these operations.

One ends of a plurality of pipes 11a, 11b, 11c, and lids constituting a multi-point pipe line are attached to the fixed plate IO in the switching section 1 on the same 6 circles and at equal intervals in the circumferential direction, The bent other ends of the pipes 11a to 11d open in pairs facing each other, and pipes for food, medicine, etc. (not shown) are connected to these other end openings.

A swing shaft 13 is attached to the cylinder 12 fixed to the center portion of the fixed plate 1O so as to be capable of linear reciprocating motion and rotational swing by a bearing 14, and the center portion is fixed to one end of the swing shaft 13. A pair of U-shaped connecting pipes 17a are opened on the rocking plate 16 opposite to the openings of the pipes 11a to lid.

17b is attached.

The mounting plate 20a connected to the cylindrical body I2, the mounting plate 20b installed at an axial distance therefrom, and the frame 21 connecting these plates constitute a support portion of the multipoint pipe switching device. , a fluid pressure cylinder 23 is fixed to the mounting plate 2 (la), and a swing actuator 24 is fixed to the mounting plate 20b, respectively, and the rod 23a and shaft 2 of the fluid pressure cylinder 23 and swing actuator 24 that constitute the drive unit 2 are fixed to the mounting plate 2 (la).
4a is the sliding key 25. They are connected by a parallel key 27 and a coupling 26 so as to be able to integrally swing and move relatively reciprocally,
The rod 23a and the swing shaft 13 are connected by a taper pin 28 so as to be able to swing together and move back and forth. Also, frame body 2! A cover 28 that covers the fluid pressure cylinder 23 is
A cover 3 covering the swing actuator 24 is attached to the mounting plate 20b.
0 are attached respectively. When the drive unit 2 supplies pressure fluid to the fluid pressure cylinder 23, the swing plate 1B approaches and separates from the fixed plate, and when the pressure fluid is supplied to the swing actuator 24, the drive unit 2 swings. The moving plate] 6 rotates and swings relative to the fixed plate 10.

The cleaning device 3 is 4i! Moving axis! 3, and a plurality of nozzles 34 opened in the radial direction of the swing shaft 13. The cleaning liquid supplied to the coupler 33 by a flexible cleaning pipe (not shown) is supplied to the nozzle 34.
．． -- is ejected for a certain period of time toward the connection between the pipes Jla-11d and 17a, 17b to wash away drips caused by the opening of the pipe connection.

The sealing mechanism 4 includes VC control pipes 17a and 17b and a gasket holder 38 screwed onto the outer periphery of these pipes. . . . A seal packing 38 having a cross section with a radial bending piece 39a sandwiched therebetween. ..., connection '1x7a.

17b and Patsukin Boulder 38. Gasket 4 between...
The bent piece 39b of the seal gasket 39° in the axial direction of the fist has a seal portion 41 at its tip for sealing the connection portion with the pipes 11a to 11d, and
The opening of the ld is formed with a taper that widens toward the end in order to eliminate stagnation of liquid.

The outer peripheral surface of the fixing plate 10 has 4i! Moving board! A cover 45 that covers B and the connecting pipes 17a and 17b is removably attached.

The cover 45 works together with the fixing plate 1O to prevent the cleaning liquid ejected from the cleaning device 3 from scattering to the drive unit 2, and also prevents the cleaning liquid ejected from the cleaning device 3 from scattering to the drive unit 2. This is to prevent the processing liquid from coming into contact with the outside air or workers and being contaminated by microorganisms when the connections between 17a and !7b are opened. Collection groove 45b
, a leakage detection sensor 48 for detecting the presence or absence of liquid leakage near the drain 45a. and a hole (not shown) for tightly passing the cleaning pipe for supplying cleaning liquid to the coupler 33.

The swing plate 18 has a rod 51 on the surface facing the fixed plate 1G, which constitutes a quantity detection mechanism, and the fixed plate 10 has a rod 51 on the surface facing the fixed plate 1G.
The stopper blocks 52.52 that 1 abuts are fixed, and the rod 51 is in contact with the stopper blocks 52.5.
2, the rotational swing position of the swing plate 16 is regulated. I had food. The linear reciprocating position of the swing plate 16 is controlled by a pair of proximity switches 55, 55 attached to the fixed plate 10 by the mounting member 54, and the rotational swing position is controlled by a pair of proximity switches 58, 58 attached to the swing actuator 24.
(see FIG. 6), the rod 51, the stopper block 52. and proximity switch 55
．． By 55.58.58.

The above position detection mechanism is configured. In addition, the proximity switch 5
5.55 is a completely waterproof type that will not cause problems even if cleaning liquid etc. is splashed.

The control device 7 includes a first directional switching valve 81 . A second directional control valve 82 that supplies and discharges the compressed air to and from the i-shift actuator 24.
．． Outlet port of first directional valve 81 and fluid pressure cylinder 2
3 rod 23a is a rocking plate! An on-off valve 63 in the flow path communicating with the pressure chamber driven in the opening direction of 8. air neo
A check valve 64 that prevents compressed air from flowing back into the air source 80 from the first directional valve 61 in a wave channel that communicates the inlet boat of the first directional valve 61 with the inlet boat of the first directional valve 61, and an on-off valve 85 that supplies cleaning water. ．． and the first directional switching valve 81 and the second directional switching valve B
A speed controller H, 8B in a flow path that communicates the outlet port of No. 2 with the fluid pressure cylinder 23 and the swing actuator 24.

87, 87, and the first and second directional valves 81 and 62 are configured as a center closed type in which all ports are closed in the neutral position, and these valves 61 to 83 and 65 are It is program controlled by the M board 68.

Next, the operation of the above embodiment will be explained with reference to FIG.

When the solenoid 61a of the first directional switching valve 61 is excited by an electric signal from the W control panel 68, the rod 23a of the fluid pressure cylinder 23 moves to the left in the figure, and the swing plate IB separates from the fixed plate IO.

When the proximity switch 55 detects that the rocking plate 1B has moved apart by a predetermined stroke, it energizes the solenoid 83a of the on-off valve 63 and de-energizes the solenoid 81a.
The compressed air that drove the fluid pressure cylinder 23 is discharged to the outside, and the linear stroke of the swing plate 1B is stopped.Next, the solenoid 82a of the second directional control valve B2 is energized to rotate and swing the swing actuator 24. When the swing axis 13
The swing plate 1B rotates about 80 degrees with respect to the fixed plate 1G.

When the proximity switch 5G detects that the rocking plate 1B has rotated and rocked by a predetermined angle, the excitation of the solenoid 82a is canceled and the second directional control valve 62 returns to the neutral position, and the compressed air in the rocking actuator 24 is released. 7 holds the rotary swing position of the cutuator.

After the second directional switching valve B2 returns to the neutral position, when the solenoid 61b of the first directional switching valve 61 is energized, the rod 23a of the fluid pressure cylinder 23, the swing shaft 13, and the swing plate 18 move to the right in the figure. , the line connection whose connection position has been switched is closed.

Thereafter, the solenoid 85a of the on-off valve 65 is energized to open the nozzle 34. The cleaning liquid is sprayed from the cover 45 to clean the dripping caused by the opening of the pipe connection part for a specified period of time.
is discharged from the drain 45a. After a predetermined time set by a timer or the like has elapsed, the cleaning is stopped by de-energizing the solenoid 8ja.

Switching of the pipe connection portion when the swing plate IB rotates and swings in the opposite direction to that described above is substantially the same as the operation described above, so a detailed explanation will be omitted.

After switching the pipes and cleaning the drippings in this way, cleaning liquid, steam, etc. are supplied from the pipes connected to the pipes 11a-1id, etc., and the pipes are cleaned and sterilized.

[Effect of the invention] Detection of the operating position of the multi-point pipe automatic switching device in the liquid processing plant of the present invention! Since it uses a proximity switch to detect when the rocking plate has linearly reciprocated and rotated by a predetermined stroke, malfunction of the rocking plate and associated leakage of liquid from the pipe connections can be reliably prevented. I can do it.

In addition, since the rotational oscillation position of the oscillating plate is accurately regulated by a rod provided on one of the fixed plate or the oscillating plate and a stopper block provided on the other, switching of the pipe connection section using the oscillating plate is possible. is certain.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the main part of an embodiment of the present invention, FIG. 2 is a partially cutaway side view, and FIGS. 3 and 4 are A--A in FIG. 2.
A and BB sectional views, FIG. 5 is an enlarged sectional view of the cleaning device,
FIG. 6 is a block diagram of the control device. 2. Drive unit, 10-. Fixed plate, 11a ~
lld *-tube, 1B--rocking plate, 17a, 17
b 11 @connecting pipe, 51--rod, 52--stopper block. 55.58 ・Proximity switch. C 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A fixed plate to which a plurality of pipes constituting a multipoint pipe line are attached;
The above-mentioned rocking plate includes a rocking plate to which a U-shaped connecting pipe is attached that opens opposite to the openings of these pipes, and a drive unit that linearly reciprocates and rotates the rocking plate with respect to the fixed plate. In a multi-point pipe automatic switching device in a liquid processing plant that switches the connection of multi-point pipes by linear reciprocating motion and rotational oscillation of a moving plate with respect to a fixed plate, either the fixed plate or the rocking plate has a rod, The other side is provided with a stopper block that comes into contact with the rod to restrict the rotational oscillation position of the oscillation plate, and a proximity switch for detecting the linear reciprocating position of the oscillation plate is provided on the fixed plate, and the drive unit is provided with a proximity switch for detecting the linear reciprocating position of the oscillation plate. An operating position detection device for a multi-point pipe automatic switching device in a liquid processing plant, characterized in that each device is provided with a proximity switch for detecting the rotational oscillation position of a oscillation plate.