JPH01145476A - Route change valve - Google Patents

Abstract

PURPOSE:To enable each valve portion to be supplied with fluid independently or simultaneously and not to be affected by malfunction of any other valve portion by providing plural hollow pipes having supply passages and valve portions so that they can reciprocate independently. CONSTITUTION:A chamber 7 is connected through a discharge pipe line 10 to the outside of a valve casing 1. Hollow pipes 13, 14 are slidably provided in wing valve casings 5, 6, and tips projected outward from the wing valve casings 5, 6 are connected to supply pipe lines respectively. Supply passages 15, 16 are formed in the hollow pipes 13, 14, and valve seat portions 3, 4 of the chamber 7 for opening and closing valve portions 19, 20 are formed in head ends 13a, 14a of the hollow pipes 13, 14. When the valve portions 19, 20 of the hollow pipes 13, 14 uncover the valve seat portions 3, 4 of the chamber 7, the supply passages 15, 16 are connected through connecting ports 23, 24 to the chamber 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a yarn path switching valve device, and more particularly to a yarn path switching valve device that has a simple structure and can independently open and close the valve.

(Prior Art) For example, in the production process of the chemical industry, fluid transfer, storage, etc. are generally indispensable operations. Furthermore, if the production process is carried out using the patch method, sealing the tanks or piping for cleaning is an essential operation to maintain smooth production, and various valves are required for these operations. It is used.

For example, ball valves are used, and the sliding surfaces of the valve seat and spherical valve body are sealed by a sealing material in line contact or surface contact. A gap may occur between the two. For this reason, when the opening/closing operation is performed, the liquid to be sent gets into this gap, which becomes a contaminant and cannot be easily cleaned.Furthermore, the liquid flows out every time the opening/closing operation is performed, and the liquid flows into the flow path. There are problems such as contamination with new or different types of liquids.

For this reason, this applicant has previously published, for example, Japanese Patent Application Laid-Open No.
As disclosed in No. 81, a multi-way valve that solves the above problems was provided.

(Problems to be Solved by the Invention) By the way, this multi-way valve slides a sliding hollow pipe connected to a supply pipe line to connect two pipe lines of the set at the same time.
The pipeline is being switched. In this way, since a plurality of pipelines are switched at the same time, if foreign matter such as dust gets caught in the sealing portion, the other valves may also become unable to seal at the same time.

Furthermore, when first supplying a predetermined liquid and then supplying and mixing another different type of liquid or the same type of liquid, or when supplying and mixing multiple liquids at the same time, this mixing ratio can be adjusted arbitrarily. There are cases where it is desired to obtain a mixed solution with a predetermined concentration by changing

This invention was made in view of the above circumstances, and provides a system grade switching valve device that not only improves operability but also allows mixing of multiple liquids simultaneously or independently by selection, further expanding the range of use. is intended to provide.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a hollow pipe that includes a chamber in the valve box that communicates with the outlet pipe line, and a supply line that supplies fluid into the chamber. A plurality of hollow pipes are provided so as to be able to independently reciprocate, and a valve portion for opening and closing a valve seat portion of the chamber is provided at the distal end head of each of the hollow pipes, and a communication port for communicating the chamber and the supply path at the distal end side portion. is formed, and when the valve portion of the hollow pipe opens the valve seat portion of the chamber, the supply path communicates with the chamber via the communication port.

(Operation) In this invention, when a predetermined hollow pipe is selected from among the plurality of hollow pipes provided in the valve box and slid, the valve portion of this hollow pipe opens the valve seat portion of the chamber. The supply path and the chamber communicate with each other through the communication port of the hollow pipe, and fluid is supplied thereto. In this way, since the fluid is supplied from the selected hollow pipe, the fluid can be supplied singly or at a predetermined ratio to obtain a mixed fluid depending on the selection of the hollow pipe.

(Example) Next, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a sectional view of a system switching valve device showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a valve box, which has a configuration in which side valve box sections 5.6 are connected to both sides of a central valve box section 2 via valve seat sections 3.4. A chamber 7 is formed by the central valve box portion 2 and the pair of valve seat portions 3.4, and each of the side valve box portions 5.4.
6 and the valve seat 3.4 form a side chamber 8.9.

The chamber 7 communicates with the outside of the valve housing 1 via an outlet line 10 and the side chambers 8, 9 via outlet lines 11, 12, respectively.

Hollow pipes 13 and 14 are slidably provided in the sleeve valve box portion 5.6, and their tips projecting outward from the sleeve valve box portion 5.6 are connected to supply pipes, respectively. Hollow pipe 13.1
4 is formed with a supply channel 15.16, the tip of which is located in the side chambers 8, 9 and has a small diameter, and has a threaded portion 17.1 formed in its tip head 13a, 14g.
A valve part 19,20 is screwed onto the part 8. This valve part 19
．． 20 is provided with a sealing member 21.22 at a portion that comes into contact with the valve seat portion 3.4 of the chamber 7.

Furthermore, communication ports 23 are provided in the small diameter portions of the hollow pipes 13 and 14.
．． 24 is formed such that, by reciprocation of the hollow pipe 13.14, the supply channel 15.16 is switched into communication with the side chamber 8.9 and the chamber 7 via the communication opening 23.24.

The stepped portions 13b and 14b of the central pipe 13.14 are the valve seat portion 3.
．． 4, and in this abutting state, the hollow pipe 13.
14 blocks the discharge passages 11 and 12, and the communication port 23
．． 24 is located in the chamber 7 and communicates with the supply paths ts, ts.

Pistons 27 and 28 are integrally formed in the hollow pipes 13 and 14, and the pistons 27 and 28 are connected to the sleeve valve box portion 5.
It is slidably provided in cylinders 29 and 30 formed in 6. The pressure chambers partitioned by the pistons 27 and 28 have air passages 31a, 31b and 32a, 32, respectively.
Compressed air is supplied or discharged from air passages 31a and 32a, and when compressed air is supplied from air passages 31a and 32a, hollow pipes 13 and 14 move forward together with pistons 27 and 28, and are supplied to air passages 31b and 32b. Then it starts moving backwards.

Note that the mechanism for reciprocating the hollow pipes 13 and 14 is the stepped portion 13a of the hollow pipes 13 and 14.

Any mechanism may be used as long as the mechanism 14a is firmly attached to the outside of the valve seat portion 3.4 and the valve portions 19 and 20 are reliably hung to the inside of the valve seat portions 3 and 4, and the driving force may be manually, mechanically, or It may also be electrically driven. For example, in addition to the pneumatic piston method, a hydraulic piston method, a method that combines pneumatic pressure or hydraulic pressure, and a biasing means such as a spring as a restoring force,
Any electric or manual crank system can be used.

Furthermore, a cleaning water supply passage 33 for injecting cleaning water into the chamber 7 is formed in the central valve box portion 2, and the cleaning water is supplied into the chamber 7 from the passage formed by moving the sealing member 34. , the valve portion 19 of the hollow pipes 13, 14.
With the chamber 7 closed at 20, the inside thereof and the inside of the outlet conduit 10 are cleaned.

Side chambers 8, 9 located on both sides of this chamber 7
Inside, the valve seat part 3.4 is closed by the valve part 19.20 of the hollow pipe 13.14, and the supply path 15.16 of the hollow pipe 13.14 is connected from the supply pipe side. The clean water is then discharged through a discharge pipe 11.12. Note that, depending on the installation position of the apparatus, drain ports 35 and 38 may be separately provided for cleaning the inside of the side chamber 8.

Further, the valve portion 1 of either one of the hollow pipes 13 and 14
9, 20 or the stepped portions 13b, 14b and the valve seat portion 3.4 of the chamber 7, even if dirt or the like gets caught and the seal is impaired, the other hollow pipes are structured to operate independently. Therefore, this does not impair the sealing performance of the other side.

FIG. 2 shows an example in which this yarn path switching valve device is incorporated into a photographic emulsion coating liquid supply line.

The hollow pipes 13 and 14 of the yarn path switching valve device A are each
It is connected to the tank 39.40 via the supply line 37.38, and the outlet line 10 is connected to the reaction tank 4 via the addition line 41.
2 and is supplied by driving the pump 43.

Therefore, when the hollow pipes 13, 14 move forward and the supply lines ts, ts shown in FIG. It is supplied to the reaction tank 42. At this time, since the hollow pipes 13.14 are operated independently, the two liquids can be mixed by simultaneously operating the hollow pipes 13.14. This makes it possible to arbitrarily set the concentration of the mixed liquid. It is also possible to operate one of the hollow pipes 13, 14 to supply the coating liquid to the reaction tank 42, and then to operate the other hollow pipe for mixing after a predetermined time, etc. becomes possible.

(Effects of the Invention) As described above, the present invention provides a valve box with a chamber that communicates with an outlet conduit, and a plurality of hollow pipes each having a supply path for supplying fluid into the chamber, each of which can be reciprocated independently. A valve portion for opening and closing a valve seat portion of the chamber is formed at the tip head of each hollow pipe, and a communication port for communicating the chamber and the supply path is formed at the tip side portion of the hollow pipe. Since the supply path communicates with the chamber through the communication port when the valve part opens the valve seat part of the chamber, the hollow pipe can be selected for operation, and depending on this selection, the fluid can be It is possible to obtain a fluid mixed at a predetermined ratio by supplying them individually or at the same time.

Furthermore, even if dirt or the like gets caught between one of the hollow pipes and the valve seat of the chamber and the seal is compromised, the other hollow pipes are designed to operate independently, which improves the sealing performance. will not be damaged.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a yarn path switching valve device showing one embodiment of the present invention, and FIG. 2 is a diagram showing an example in which this yarn path switching valve device is incorporated into a photographic emulsion coating liquid supply line. In the figure, 1 is the valve box, 3.4 is the valve seat, 7 is the chamber, and 8
．． 9 is a side chamber, 10 is an outlet pipe, 11.12 is a discharge path, 13.14 is a hollow vibe, and 19.20 is a valve portion.

Claims (1)

[Claims] The valve box is provided with a chamber communicating with the outlet pipe, and
A plurality of hollow pipes each having a supply path for supplying fluid into the chamber are provided so as to be able to reciprocate independently, and a valve portion for opening and closing the valve seat portion of the chamber is provided at the tip head of each of the hollow pipes. A communication port is formed in a side portion to communicate the chamber with the supply path, such that when the valve portion of the hollow pipe opens the valve seat portion of the chamber, the supply path communicates with the chamber via the communication port. A system switching valve device characterized by: