JPH10196835A - Supplying valve for automatic washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wash a supplying valve interposed between a pair of pipelines as it is still connected there. SOLUTION: A supplying valve A is divisible into two pieces, in which a longer valve stem 23 and a shorter one 24 slide on each other in pairs to bring their seal valve elements 26 and 27 into close contact with valve seats 13 and 14. The valve stems 23 and 24 are adapted to reciprocate by air pressure under the pressure of springs 30 to open or close the seal valve elements 26 and 27. If either of the valve stems 23 and 24 is pressed upward to open the seal valve element 26 or 27, washings used specially for installed equipment come to flow around the components to thereby wash the valve seats 13 and 14 and the valve stems 23 and 24 simultaneously without the removal or disassembly of the supplying valve A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid supply valve,
In particular, automatic cleaning without disassembly is possible,
For example, the present invention relates to a liquid supply valve for automatic cleaning suitably used for a pipe system requiring cleaning and sterilization relatively frequently, such as a filling machine for liquid foods.

[0002]

SUMMARY OF THE INVENTION For example, milk, milk drink,
CIP of filling machine used for filling liquid foods such as soft drinks into containers
In this case, the CIP liquid supply pipe system is connected to the actual liquid supply pipe system of the filling machine,
By supplying P liquid to the pipe system for supplying actual liquid, C
It is supposed that the IP liquid filling machine is cleaned. However, due to the structure of the liquid supply valve connecting these pipe systems, it is necessary to remove and disassemble the valve each time and perform the cleaning individually. Is supplied to the liquid supply valve, and the liquid is passed through the valve for self-cleaning. However, also in this case, it is difficult to clean the valve seat due to the flow path of the cleaning liquid. For such cleaning, it is necessary to remove and disassemble in the same manner and perform individual cleaning.

[0003] Such removal and disassembly for washing is complicated in the washing operation itself. In particular, for liquid foods, it is necessary to perform steam sterilization after the removal and washing, and this operation is further performed. In general, this type of pipe system is often connected at a high place, in which case cleaning work involving removal and disassembly may be dangerous, and moreover, it is relatively frequent. In this kind of liquid food to be cleaned, the cleaning operation takes a long time to set up, and also causes a reduction in production efficiency.

[0004] The present invention has been made in view of such circumstances, and a solution to the problem is that cleaning and sterilization can be automatically performed simultaneously with cleaning and sterilization between pipe systems without removing and disassembling. Eliminates the complexity and danger of cleaning work,
An object of the present invention is to provide a liquid supply valve for automatic cleaning which can contribute to improvement of production efficiency.

[0005]

According to the present invention, a pair of stepped valve seats are provided at a pipe joint so that a flow path between a pair of pipe systems is in a state suitable for a liquid flow. And a pair of slidable long and short valve stems having a common axis, and a sealing valve at the tip of each of which is in close contact with the pair of stepped valve seats. The stems can be moved forward and backward individually or simultaneously, and the relationship between the pair of valve seats and the valve stem can be opened and closed in two steps, so that the flow path between the pair of pipe systems can be fully opened and fully closed or appropriately set. In other words, in the first aspect of the present invention, this is interposed between a pair of pipe systems to form a flow path between the pipe systems, and a pair of stepped valve seats is arranged in the flow path. Setting A pipe joint portion, a cylinder portion provided with a pair of air drive chambers projecting from the pipe joint portion and formed so as to overlap in the projecting direction, and a pair of air drive chambers of the cylinder portion. A sealing valve that hermetically seals its head and inserts and penetrates the long side into the axial through hole on the short side so as to be slidable with each other so that it can be in close contact with the pair of valve seats at the ends at the ends. And a pair of long and short valve stems respectively biased in one direction by a spring. The pair of long and short valve stems are individually opposed to the biasing force of the spring by the air pressure of each air drive chamber of the cylinder portion. Or an automatic flushable liquid supply valve characterized in that it can move forward and backward at the same time. In addition to the above, the present invention facilitates the production and facilitates installation between pipe systems. 2. The automatic cleaning device according to claim 1, wherein the pipe joint portion and the cylinder portion are detachably formed separately and the pipe joint portion is detachably formed for each pair of pipe systems. The liquid supply valve may be a liquid supply valve.
To be as simple as possible in the preferred form,
The long side of the pair of long and short valve stems is sealed outside the pair of air drive chambers, and the sealing portion is allowed to come into close contact with the small outside diameter of the pair of stepped valve seats. 3. The head according to claim 1 or 2, wherein the side heads are sealed inside the pair of air drive chambers, and the sealing portion can be in close contact with the inner diameter side of the pair of stepped valve seats. A fourth aspect of the present invention is a liquid supply valve for automatic cleaning, wherein the pair of air drive units is configured so as to have the same preferable form as that in addition to the above, which ensures the individual or simultaneous movement of the valve stem. A pair of long and short valve stems, each having an air pressure inlet and an air outlet, shall be formed with flanges that protrude from the valve stem, and the flange shall be hermetically sealed between the air pressure inlet and the air outlet. To 4. The liquid supply valve for automatic cleaning according to claim 1, wherein each of the valve stems is movable forward and backward, and these are used as means for solving the above problems as the gist of the invention. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the drawings. FIG. 1 shows an actual liquid for filling a liquid food such as milk, milk drink, and soft drink from a tank via a filling device 3. A CI for supplying the actual liquid pipe system 1 for the line and the CIP liquid from the CIP device 4 to clean the filling device 3
FIG. 3 is a system diagram showing a pair of pipe systems of a CIP pipe system 5 for supplying a P solution, and
These are connected to form a flow path for the real liquid and the CIP liquid, and the flow path between the pair of pipe systems 1 and 5 is fully opened and fully closed or can be set as appropriate to provide an automatic washing universal supply. The liquid valve A is interposed.

As shown in FIG. 2 and subsequent figures, the liquid supply valve A includes a pipe joint 10, a cylinder 15 protruding from the pipe joint 10, and valve stems 23, 24 provided on the cylinder 15. In this example, the pipe joint portion 10 and the cylinder portion 15 are
This is detachably formed separately and the pipe joint 10
Are detachably formed separately for each pair of pipe systems 1 and 5.

The pipe joint portion 10 is formed by separating as described above, and is provided with an upper pipe joint portion 11 and a lower pipe joint portion 12 in this embodiment. In the present embodiment, the valve seats 13 and 14 are separated from each other so that the inner upper side is made larger in diameter and the outer lower side is made smaller in diameter, and the upper and lower sides are formed into two steps. It is formed on an upper pipe joint portion 11 interposed between the pipe systems 1.

The cylinder portion 14 has a pair of air drive chambers 19, which are respectively formed so as to overlap in the projecting direction from the upper pipe joint portion 11 in the present embodiment.
In this example, the cylinder portion 15 is provided with an intermediate partition plate 17 having a through hole 18 at an intermediate position in the vertical direction of a cylindrical body 16 having a C-shaped cross section. Air drive chambers 19 and 20 are disposed above and below the intermediate partition plate 17, and each of the air drive chambers 19 and 20 has an air pressure inlet 21 and an air discharge port 22, respectively. And the air pressure inlet 2
1 is located at the upper end of each of the air drive chambers 19 and 20, and the air discharge port 22 is located at the upper end of each of the air drive chambers 19 and 20.
20 is provided at each of the lower end positions to communicate with the outside.

The valve stem 2 provided on the cylinder portion 15
The heads are hermetically sealed in the pair of air drive chambers 19 and 20 of the cylinder portion 15, and the longer side 23 is inserted and penetrated into the axial through hole 29 of the shorter side 24. The sealing valves 26, which are slidable with each other and can be closely contacted with the pair of valve seats 13, 14 at the ends thereof, respectively.
27, each of which is biased in one direction by a spring 30. In this example, the pair of long and short valve stems 23, 24 are connected to the long side 2 thereof.
3 is sealed outside the pair of air drive chambers 19 and 20, in this example, on the upper side 19, and the sealing valve 27 is attached to the small outside diameter of the pair of stepped valve seats 13 and 14. In the example, the lower diameter side 14 is allowed to be in close contact with the small diameter side 14, and the head of the short side 24 is sealed inside the pair of air drive chambers 19 and 20, in this example, the lower side 20 and sealed. The stop valve 26 can be in close contact with the large inner side of the pair of stepped valve seats 13 and 14, in this example, the upper large side 13.
The head of the valve stem 24 is connected to the valve stems 23 and 24, respectively.
And a flange 25 extending from the air pressure inlet 2 of the cylinder portion 15.
1 and hermetically sealed between the air discharge port 22.

That is, in this embodiment, the pair of long and short valve stems 23 and 24 have a disc-shaped flange 25 at the upper end of the stem and a concentric circle with the flange 25 at the lower end. Sealing valve (valve disc) 2
6 and 27, each of which has an H-shaped cross section with a different stem length. At this time, the valve stem 24 on the shorter side has an axial center extending over the flange 25 and the sealing valve 26 of the stem. A through hole 29 at a central position penetrating the valve stem 23 is provided in the long side.
For example, the sealing valve 27 is attached to the stem so as to be screwed later, so that the sealing valve 27 can be inserted and penetrated so as to be slidable with each other.
The biasing of the members 3 and 24 is performed outwardly between the lower surface of the flange 25 and the upper surface of the intermediate partition plate 17 of the cylinder portion on the upper side, and between the lower surface of the flange 25 and the substrate of the cylinder portion on the lower side. These valve stems 23, 2
4 is urged by interposing a spring 30 therebetween.

Accordingly, the liquid supply valve A is connected to a compressor or an air motor (not shown) to each of the upper air pressure inlets 21 of the air drive chambers 19 and 20, respectively, to feed air into the air pressure inlets 21. In this way, the pair of long and short valve stems 23 and 24 are moved by the springs 3 by the air pressure of the respective air drive chambers 19 and 20 of the cylinder portion 15.
It is possible to move forward or backward individually or simultaneously against the urging force of 0, whereby the flow path between the pair of pipe systems 1 and 5 can be fully opened, fully closed or appropriately set. And the CIP cleaning can be performed by feeding the air.

That is, in FIG. 2, air pressure is applied to each of the air drive chambers 19, 20 to push and advance each of the valve stems 23, 24, and the sealing valves 26, 27 are moved to the respective valve seats 13, 14 respectively.
FIG. 3 shows a state in which the air passages 19 and 20 are closed without applying air pressure.
The valve stems 23 and 24 are urged and retracted by the urging force of the valve seats, and the sealing valves 26 and 27 are moved to the respective valve seats 13 and 1.
4 and 5 with the flow path fully open, FIGS. 4 and 5 show that one air drive chamber 19 or 20 is applied with air pressure to press and advance its valve stem 23 or 24 and its sealing valve 26.
Or 27 is brought into close contact with the valve seat 13 or 14 and the valve stem 24 or 2 is biased by the spring 30 without applying air pressure to the other air drive chamber 20 or 19.
3 shows a state in which the sealing valve 27 or 26 is separated from the valve seat 14 or 13 and the flow path is set so as to be continuous between the pair of pipe systems 1 and 5, respectively. For example, when the actual liquid is supplied from the tank 2 to the filling device and the container is filled, the flow path in FIG. 3 is fully opened without applying air pressure (provided that the valve 7 in FIG. To open and close to prevent the actual liquid from flowing into the CIP pipe system 5 behind the liquid supply valve A), to form a sufficiently large flow path open in accordance with the flow diameter of the actual liquid pipe system 1; In order to supply the CIP liquid from the CIP device 4 and wash the actual liquid pipe system 1 and the filling device 3, air pressure is applied to one of them to set the flow path of the CIP liquid as shown in FIG. 4 or FIG. The length of FIG. 4 Among the pairs long dimension side of the valve stem 2
3, the CIP liquid from the CIP pipe system 5 flows into the actual liquid pipe system 1 at the position of the liquid supply valve A (however, the valve 7 is opened and closed in the same manner as described above). The flow path excluding the valve seat 13 on the inner diameter side of the stepped pair in the liquid supply valve A, and the lower part of the valve stems 23 and 24 located in the flow path, in this example, the shorter side The lower surface of the sealing valve 26 of the valve stem 24, the protruding stem of the longer valve stem 23 positioned below and the upper and lower surfaces of the sealing valve 26 are cleaned with the CIP liquid passing through the flow path and the filling device side. Real liquid pipe system 1
When the sealing device 26 of the pair of short and long valve stems 24 in FIG. 5 is separated from the CIP pipe system 2 through the other pipe system 6, the filling device 3 is cleaned. The CIP liquid guided to the vicinity of the tank 2 of the liquid pipe system 1 flows into the actual liquid pipe system 1 (however, similarly, the valve 7 is opened and closed appropriately so as not to flow into the actual liquid pipe system 1 behind the supply valve A). ), The actual liquid pipe system 1 between the tank 2 and the liquid supply valve A, the flow path excluding the portion of the valve seat 14 on the smaller outer diameter side of the stepped pair of the liquid supply valve A, and the flow path. The upper portions of the valve stems 23, 24, in this example, the upper and lower surfaces of the shorter valve stem 24, the protruding stem of the longer valve stem 23 located below this, and the upper surface of the sealing valve 27. , CI that also goes over the flow path
The cleaning is performed by using the P liquid, so that the liquid supply valve A can be completely cleaned without removing and disassembling the liquid supply valve A between the pair of pipe systems 1 and 5. Further, in this example, By stopping the supply of the CIP liquid and supplying hot water from a hot water tank (not shown),
After the washing of the P solution, hot water sterilization can be similarly performed.

In the figure, reference numeral 28 denotes an O-ring provided on the valve stem for preventing liquid leakage, and 31 denotes a joint of pipe joints 11 and 12 in which a liquid supply valve A is fixed to a pair of pipe systems 1 and 5 by butt connection of flanges. Reference numerals 32 denote fixtures such as bolts and nuts and clamps between the pipe joints 11 and 12 or between the pipe joints 11 and the cylinder 15, respectively.

Although the illustrated example is as described above, in the practice of the present invention, a pair of pipe systems are used for different types of CIP-capable real liquids, for example, coffee and milk, and are filled with caffe ole. In addition, a pair of pipe systems and pipes, including the use of a liquid supply valve for mixing and cleaning two liquids, and a horizontal arrangement of a pair of pipe systems horizontally. Fittings,
The specific materials, shapes and structures of the cylinder portion and the valve stem, the relationship between them, and the additions to them may be variously changed and the form of the liquid supply valve may be changed unless the gist of the present invention is contradicted. it can.

[0016]

The present invention is configured as described above.
The first aspect of the present invention is to automatically perform cleaning and sterilization at the same time as cleaning and sterilization between pipe systems without removing and disassembling, eliminating the complexity and danger of cleaning work, and contributing to improvement of production efficiency. A liquid supply valve for automatic cleaning that can be provided can be provided. In addition to the above structure, the liquid supply valve can be separated and configured to facilitate its production and installation between pipe systems. Claim 3 can be
Also, in addition to the above, the liquid supply valve can be of a simple configuration as much as possible, so that the operation is reliable and a trouble-free preferred form is achieved. Alternatively, the simultaneous advance and retreat can be similarly simplified, so that the operation can be performed reliably and a trouble-free preferred embodiment can be achieved.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a model using a liquid supply valve.

FIG. 2 is a partially enlarged longitudinal sectional view showing a fully closed state of a liquid supply valve.

FIG. 3 is a partially enlarged longitudinal sectional view showing a fully opened state of a liquid supply valve.

FIG. 4 is a partially enlarged longitudinal sectional view showing a state in which one side of a liquid supply valve is opened.

FIG. 5 is a partially enlarged longitudinal sectional view showing a state in which the other side of the liquid supply valve is opened.

[Brief description of reference numerals]

 A Supply Valve 1 Actual Liquid Pipe System 2 CIP Liquid Pipe System 10 Pipe Joint 13 Valve Seat 14 Valve Seat 15 Cylinder 19 Air Drive Chamber 20 Air Drive Chamber 23 Valve Stem 24 Valve Stem 25 Flange 26 Sealing Valve 27 Sealing Valve 30 Spring

Claims (4)

[Claims] 1. A pipe joint portion interposed between a pair of pipe systems to form a flow passage between the pipe systems and a pair of stepped valve seats disposed in the flow passage, and protruding from the pipe joint portion. A cylinder portion provided with a pair of air drive chambers formed and partitioned so as to overlap in the protruding direction, and a head is hermetically sealed in each of the pair of air drive chambers of the cylinder portion and a long side is formed. A sealing valve that fits and penetrates into the axial side through hole on the short side and is slidable with each other so as to be mutually slidable is formed at the tip of each of the pair of valve seats that can be in close contact with each other and urged in one direction by a spring. A pair of long and short valve stems, and the pair of long and short valve stems can be individually or simultaneously retracted against the urging force of a spring by the air pressure of each air drive chamber of the cylinder portion. Automatically adjustable liquid supply valve. 2. The pipe joint according to claim 1, wherein the pipe joint and the cylinder are detachably formed separately, and the pipe joint is detachably formed for each pair of pipe systems. Liquid supply valve for automatic cleaning. 3. The long-side heads of the pair of long and short valve stems are sealed outside the pair of air drive chambers, and the sealing portions can be in close contact with the small outer diameter sides of the pair of step-shaped valve seats. , The shorter side head is sealed inside a pair of air drive chambers,
The liquid supply valve for automatic cleaning according to claim 1, wherein the sealing portion is configured to be able to be in close contact with a large inner diameter side of the pair of stepped valve seats. 4. A pair of air drive sections each having an air pressure inlet and an air discharge port, and heads of a pair of long and short valve stems are respectively formed by flanges formed to project from the valve stems. The liquid valve for automatic cleaning according to claim 1, 2 or 3, wherein each valve stem is made movable forward and backward by hermetically sealing the flange between the discharge ports.