JPS58171302A - Weigher for volume - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a volume proportional, determining or metering device.

It relates to the weighing and dosing of filling various products, such as food products, into containers, boxes, cans, etc.

Known volumetric or dispensing devices include devices in which a piston draws in a measured amount of a product, such as a food product, and fills a container or the like. Dispensing devices of this type typically use cock or plug valves of various constructions to alternately open and close the suction circuit supply circuit.

As is well known, this type of cock or plug valve is highly reliable and durable, but is difficult to clean. Furthermore, sealing gaskets used for various component parts of metering and dispensing devices,
The joints and the like have the same problems as the pistons of ordinary dispensing devices.

That is, the difficulty of cleaning at 5 o'clock after dispensing the food products is a significant disadvantage.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a new volumetric metering device which eliminates the above-mentioned drawbacks, has a valve that is extremely easy to clean, has a highly reliable operation, and is of simple construction and compact.

In order to achieve the above object, the present invention provides a volumetric measuring device for filling a container with a product such as a food product, which is provided with at least one piston to fill a metered amount of the product into a suction container. The suction supply circuit is provided with at least one valve of a flexible rose-like diaphragm, which valve is in direct sealing contact with an opening edge formed by the valve seat.

A diaphragm in the form of a valve is significantly easier to clean, which is a significant advantage compared to the cocks used in known devices.

According to an embodiment of the invention, the edges of the flexible diaphragm are mechanically clamped in sealing relation, and the central portion of the diaphragm is controlled in an opening forming a valve seat by a stem axially internal to the diaphragm. .

In the above case embodiment, the central part of the diaphragm (
is secured by a set screw or the like on the free shroud of the stem, and the stem slides into engagement within a member that clamps the edge of the diaphragm.

When Lot 9 is operated, the center of the diaphragm comes into airtight sealing contact with the valve seat. Since the diaphragm has a rose shape, it deforms freely.

According to another embodiment, valves with diaphragms and stems are arranged on both sides of the sliding chamber of the piston, the valves alternately connecting a suction duct connected to a product storage tank and a supply duct for the instrument product discharge nozzle material. Closed on.

According to another embodiment, the suction duct is y-parallel to the solid axis of the chamber below the tank, and the supply duct extends y-perpendicular to this solid axis.

According to the embodiment of 111, the solid axis of the nozzle is y-perpendicular to the axis of the supply duct, and the nozzle is provided with means for removably mounting a manifold for closed-loop cleaning of the nozzle.

According to another embodiment, the other end of the stem attaching the central part of the diaphragm is connected to a rod of a jack or ram-like actuator connected to the equipment frame or to a mechanical control device.

According to another embodiment, the metering piston slides in the chamber without intermediate blocking means, the rod of the piston passing along the solid axis of the chamber in the wall of the storage tank for the goods to be weighed, and is in direct and permanent communication with the chamber and the suction supply duct.

The metering device according to the invention is of mechanically simple construction and effectively fills a container or the like with a metered food product that moves under the nozzle of the device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Exemplary embodiments and drawings will be described to clarify the objects, features, and advantages of the present invention.

The figure shows a volumetric metering device according to the invention, in which a metering piston 2 slides in a cylindrical chamber 1, as shown in FIG. The side communicates with the supply duct 4. Both ducts are alternately opened and closed by valve 5.5. A flexible diaphragm 6 is attached to the valve 5.

The storage tank 7 contains, for example, a beverage and is mounted on top of the cylinder 8 forming the chamber 1 . Tank 7 communicates directly and permanently with chamber 1 and further with suction duct 3 . It opens into the tank 7 at the suction duct 3''+i section 3a.

As shown in Figure 4, the diaphragm 6 of each valve 5 is bellow-shaped and expands and contracts in the vertical direction to open and close the port 9.10 forming the seat 11.12 of the valve 5. The two prongs 13 or edges of each diaphragm are mechanically clamped to form a gas-tight seal, while the central or upper portion 14 is free to move and is operated by a stem 15. The stem 15 is mounted axially inside the diaphragm 6 and engages a bow 9.10 forming the seat 11.12 of the valve 5.

The center portion 16 of the diaphragm 6 is connected to the end portion 15α of the stem 15.
It is fixed with a set screw 16 or the like.

In the example shown in FIG. 4, the edge of the rim 16 of the diaphragm 6 of the valve 5 on the side of the suction duct 6 is ramped between the bottom 17 of the cylinder 8 and the flange 19.

The member 1B with the suction duct 6 is attached to the cylinder 8. The stem 15 slides within the 7 flange 19 which closes the swivel 20 of the valve 5 and moves the diaphragm 6. Diaphragm 6 surrounds stem 15. The stem 15 slides within a sleeve 21 which is fixed to the flange 19. The outer end 15h of the stem 15 is fixed by screwing the rod 22FC of the double-acting jack-shaped actuator 25. The actuator 260 casing is fixed to the flange 19 via the pillar 24 etc. If the duct 6 is manufactured using the same material 8.1B, the axis X-X' of one chamber 1
The metering device is compact and its operation is simple, as will be explained later.

The edge 13 of the diaphragm 6 of the valve 5 on the side that closes off the supply duct 4 is clamped between the flange 25 and a member 26 forming the housing 27 of the valve 5 for a gas-tight seal. The housing 27 is connected to the supply duct 4 . Member 26 communicates with a nozzle 28 through a point or opening 10. The product is filled through a nozzle 28 into a container 29, such as a can or bottle, as shown in FIG. As before, the stem 15 slides within a sleeve 21 attached to a flange 25. stem 15
The end 15a is attached to the center part 14 of the diaphragm 6 in the same manner as described above, and the other end 15A is connected to the rod 22 of a double-acting jack-like actuator 25.

The actuator 26 is fixed to the flange 25 via the post 24.

For example, the nozzle 28 has a threaded portion 28. etc., so that a manifold 64 for closed loop cleaning of the nozzle 28, which will be described later, can be attached.

In the embodiment of FIG. 4, the supply duct 4 extends at right angles to the axis X--X' of the metering chamber 1 and the piston 2.

This ensures that parts of the device, such as the nozzle 28, are sufficiently above the container 29 to be filled to make the most efficient use of a vertical laminar flow of, for example, sterile air. The supply duct 4 can also be shorter than that shown in FIG. 4, for example with the length shown in FIGS.
The device becomes even smaller.

As shown in FIG. 4, the metering piston 2 has a piston body 2a that slides within the chamber 1 in contact with the inner wall of the cylinder 8,
Easy to clean without using gaskets, gaskets, joints, etc. The piston body 2a is inserted through the screw 62 etc.)
As shown in FIGS. 1 to 6, the rod 2h slides within the axis X-X/p of the chamber 1.The rod 92h slides in the axis X-X/p of the chamber 1. It can be moved by a hydraulic or pneumatic device.The part where the piston 2a)'2b passes through the wall of the tank 7 is equipped with a necessary device to insulate the inside and outside of the tank, such as a mechanical joint or a hydraulic joint. Alternatively, it is preferable to provide a μ-team or steam shield.The device according to the invention is of the type in which the piston 2 and chamber 1 assembly is housed in a storage tank 7 which supplies the product to be weighed; Therefore, the reliability of operation is high.

The valve 5 for switching the suction and supply circuits 6, 4 is moved in synchronization with the movement of the piston 2 by a required mechanical, hydraulic, pneumatic device, etc. The operation of the apparatus of the present invention will be explained with reference to FIGS. 1 to 6.

As shown by the arrow in FIG. 1, when the piston 2 moves upward, the valve 5 for opening and closing the suction duct 6 opens, and the product 66 contained in the tank Z is sucked through the suction duct filter. A metered amount of product is thus supplied into the chamber 1.

As shown in FIG. 4, communication between the duct 6 and the chamber 1 is provided through an opening 18α at the bottom of the chamber.

After suction overculm, the suction duct 6 is closed by the valve 5.

The supply duct 4 is opened by the valve 5. When the piston 2 descends through the chamber 1, the product is fed into the container 29, as shown in FIG. The container 29 moves beneath the device, for example by a stepping motion, while being held on the support member 29. Once the metered amount of product has been dispensed, the valve 5 is again in the position shown in FIG. A new suction is made here and the metered product is fed.

When cleaning the metering nozzle 28, clean the manifold 34.
screw into the nozzle. or cover the nozzle with a remote control device. Thus, cleaning of the nozzle 28 can be done hands-free and in a closed loop. This is important when processing products such as food.

The volumetric measuring device according to the first invention is simple in design and operation, and can be modified in various ways.

The position and direction of the valve 5 are different between Figures 1 to 3 and Figure 4 of the body.

The device frame to which the tank 7 is attached can be of a one-piece type, or it can be made of a plurality of assembled parts as shown in FIG.

[Brief explanation of drawings]

1 to 3 are longitudinal sectional views showing the operation of the volumetric measuring device according to the present invention, in which FIG. f$1 shows the suction process, FIG. 2 shows the supply process, FIG. FIG. 4 is an enlarged longitudinal sectional view showing details of the device of the present invention. 1: Chamber, 2: Piston, 6: Suction duct, 4: Supply duct, 5: Valve, 6: Diaphragm, 7: Tank,
8 Niji Linda, 11.12: Valve seat, 15:
Stem, 22: Lot 9.2B = Nozzle, 64:
manifold.

Claims (1)

[Scope of Claims] 1. A volumetric measuring device for filling a container with a product such as a food, wherein at least one piston measures the product.
The suction supply circuit is provided with at least one valve, such as a removable prismatic diaphragm, which is in direct sealing contact with the edge of the opening formed by the valve seat. A volumetric measuring device characterized by: 2. The edges of the flexible diaphragm are mechanically clamped in a sealing relationship, and the central portion of the diaphragm is controlled in an opening forming a valve seat by a stem axially internal to the diaphragm. Apparatus described in section. 6. The central part of the diaphragm covers the free end of the stem and is fixed onto the free end by means of a screw or the like. 3. The apparatus of claim 2, wherein said stem is slidably engaged within a member clamping the edge of the diaphragm. 4. A valve having the diaphragm and a stem is placed on both ends of the sliding chamber of the piston, and the valve alternately closes the suction duct connected to the product storage tank and the supply duct with the Keiei product discharge nozzle. The device according to claim 2. 5. The apparatus according to claim 4, wherein the suction duct extends below the tank and parallel to the solid axis of the chamber, and the supply duct extends perpendicular to the solid axis in y. 6. The solid axis of the nozzle is y-perpendicular to the axis of the supply duct, and the nozzle is provided with a device for removably attaching a closed-loop cleaning manifold of the nozzle. Device. 1. The device according to claim 2, wherein the other end of the stem attached to the upper center of the dial aphram is connected to a rod of an actuator fixed to the device. 8. The metering piston slides in the chamber without intermediate blocking means, and the rod of the piston passes along the solid axis of the wall of the storage tank for the goods to be weighed, and the tank is connected to the chamber. 5. A device as claimed in claim 4 in direct and permanent communication with the suction supply duct.