JPH0735875U - Valve opening and closing device - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to enable automatic control by air operation with one valve and arbitrary opening and closing by manual operation. A mainstream pipe, a valve box formed on one side of the mainstream pipe, and an actuator integrally assembled with the valve box are provided, and the mainstream pipe has a branch hole opened on an inner peripheral surface. The valve box has a valve chamber therein, a valve hole communicating the valve chamber with a branch hole, a diaphragm defining a surface of the valve chamber facing the valve hole, and a valve chamber protruding from the diaphragm. ,
And a valve element that opens and closes the valve hole by contacting with and separating from the valve hole. The valve element and the diaphragm are moved forward and backward toward the valve hole by the actuator, and the actuator is automatically driven by air operation and manually operated It is a valve opening and closing device that moves forward and backward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve opening / closing device for branching and outflowing a liquid from a main flow path, and particularly to a certain strictness such as ultrapure water, sterile water, culture liquid used in the fields of electronic industry, pharmaceutical manufacturing, food manufacturing, etc. The present invention relates to a valve opening / closing device used for branching outflow of a liquid that requires various qualities.

[0002]

[Prior art]

 In the case of a sampling valve, for example, in the case of CIP (cleaning in place) and steam sterilization, it is necessary to visit the site and operate it by opening the manual valve fully and then closing it completely. It took a lot of work. Also, in the case of an automatic sampling valve, it is difficult to sample without a manual mechanism.

Further, originally, in equipment mainly for automation, it is difficult to cope with a failure of an automatic control system or a case where a valve is desired to be opened / closed.

[0004]

[Problems to be solved by the device]

 In the above conventional valve, it is necessary to enable automatic control by air operation and arbitrary opening and closing by manual operation. For example, in the case of a sampling valve, CIP (cleaning in place), when performing steam sterilization, it is necessary to automatically open and close by air operation, and at the time of sampling, it is necessary to be able to manually extract an arbitrary amount of liquid.

[0005]

[Means for Solving the Problems]

 Therefore, in view of the above circumstances, the present invention is formed on the main flow pipe and one side of the main flow pipe in order to enable automatic control by air operation and arbitrary opening and closing by manual operation in the valve. A valve box and an actuator integrally assembled to the valve box are provided, and the mainstream pipe has a branch hole opened on the inner peripheral surface, and the valve box has a valve chamber inside and a valve chamber. To communicate with the branch hole, a diaphragm that defines a surface of the valve chamber facing the valve hole, and a diaphragm that protrudes on the valve chamber side of this diaphragm and closes and closes the valve hole to open and close the valve hole. A valve opening / closing device having a valve element, the valve element and the diaphragm being moved forward and backward toward the valve hole by the actuator, and the actuator being automatically driven by air operation and arbitrarily moved by manual operation.

[0006]

[Action]

 In case of sampling valve, CIP (cleaning in place), in case of steam sterilization, automatic opening and closing by air operation is possible, and during sampling, arbitrary liquid amount can be extracted by manual operation.

[0007]

【Example】

 A valve opening / closing device according to an embodiment of the present invention will be described in detail with reference to FIG. The valve opening / closing device includes a straight tubular main flow pipe 1, a valve box 2 formed on one side of the main flow pipe 1, and an actuator 3 integrally assembled to the valve box 2. If necessary, flanges 5 are formed at both ends of the peripheral wall 4 of the mainstream pipe 1, and a branch hole 6 is formed at the center of the inner peripheral surface of the peripheral wall 4 in the axial direction. To form a connection port 7 extended to the.

Further, in order to reduce the occurrence of turbulent flow at the rim of the branch hole 6, the inner peripheral surface of the connection port 7 and the inner peripheral surface of the peripheral wall 4 are smoothly connected. The valve box 2 includes a valve chamber 8 therein, a valve hole 9 that connects the valve chamber 8 to the branch hole 6, and a diaphragm 10 that defines a surface of the valve chamber 8 that faces the valve hole 9. Inside the valve chamber 8, a valve element 11 that projects from the diaphragm 10 and opens and closes the valve hole 9 by contacting and separating from the valve hole 9, and an annular shape that faces the valve element 11 and surrounds the valve hole 9. Valve seat 12 is provided, and the valve element 11 and the diaphragm 10 are driven to move back and forth toward the valve hole 9 and the valve seat 12 by the actuator 3.

A branch port 14 for communicating the valve chamber 8 to the outside is formed in the valve box 2, and a flange 15 is formed at the leading end of the branch port 14 as needed. The drive source of the actuator 3 may be any drive source such as electricity, hydraulic pressure, pneumatic pressure, etc. Here, pneumatic pressure is used as the drive source. That is, the actuator 3 of this embodiment is composed of a single-acting air cylinder, and the valve box lid 16 that covers the diaphragm 10 of the valve box 2, the cylinder chamber 17 formed in the valve box lid 16, and this cylinder. A piston 18 slidably fitted in the chamber 17, a pressure receiving chamber 19 defined by the piston 18 in the cylinder chamber 17, and the valve box lid 16 are formed in the pressure chamber 19 to form a compressed air source. A pilot supply port 20 connected to the valve box, a spring case 21 assembled to the valve box lid 16 on the side opposite to the valve box, and a spring 22 housed in the spring case 21 for biasing the piston 18 toward the pressure receiving chamber 19 side. ing.

The piston 18 is connected to the center of the diaphragm 10 by a screw 31 with a washer 30 at the tip of a piston rod 23 that penetrates through the valve box lid 16 and projects into the valve box 2. Is connected to the end wall 24 of the spring case 21 by a connecting bolt 32 that is inserted into the outer wall of the spring case 21 in a retractable manner.The connecting bolt 32 is screwed to the spring case 21 and protrudes from the spring case 21. A handle 33 in the shape of a pin is connected to each other by driving a pin 34, and the base end portion of the handle 33 is rotatably fitted on the spring case 21.

The connection of the base end of the connecting bolt 32 to the piston 18 is performed by fitting a large-diameter engagement piece 36 at the base end of the connecting bolt 32 into a receiving hole 35 formed in the center of the piston 18. 35 A stop plate 37 provided near the opening can be engaged. When the handle 33 is rotated, the connecting screw 32 is also rotated accordingly, so that the rotating engagement piece 36 does not come into direct contact with the stop plate 37. The plastic ring 38 and the stainless steel ring 39 are interposed. The plastic ring 38 slides to facilitate rotation of the engaging piece 36, and the stainless ring 39 has a predetermined strength. The stroke of the piston 18 when the valve is opened is the distance S between the piston 18 and the spring case 21, but when the valve 11 is seated on the valve seat 12, the lower end of the engaging piece 36 of the connecting screw 32 is closed. The distance L between the bottom surface 40 of the receiving hole 35 and L is set to L> S, compressed air is supplied from the pilot supply port 20, and when the piston 18 moves and contacts the spring case 21, the piston 18 receives It does not interfere with the bottom surface 40 of the hole 35. Further, when the handle 33 is turned counterclockwise to loosen the connecting screw 32, a slight gap is provided so that the stainless ring 39 does not immediately contact the stop plate 37.

The operation of this valve will be described. The automatic valve opening by compressed air is performed as follows. When compressed air of a predetermined pressure is supplied to the pressure receiving chamber 19 of this valve, the vane 22 is compressed and the piston 18, the piston rod 23, the diaphragm 10 and the valve element 11 are driven in the valve opening direction. As a result, the valve element 11 is separated from the valve seat 12 and the valve is opened, and the liquid is branched out from the main flow pipe 1 to the outside through the branch hole 6, the valve hole 9, the valve chamber 8 and the branch port 14.

When the supply of compressed air is cut off, the piston 18 is biased by the spring 22 and the valve element 11 is seated on the valve seat 12 and the valve is closed. According to the manual operation, the valve is opened by the operator manually rotating the handle 33 counterclockwise. Then, the connecting screw 32 also rotates counterclockwise, the engaging piece 36 of the connecting screw 32 engages with the stop plate 37 with the plastic ring 38 and the stainless steel ring 39 interposed, and the piston 18 contacts the spring case 21. Then, the valve 11 is separated from the valve seat 12 and opened.

When the handle 33 is turned and the connecting screw 32 is screwed in, the engagement piece 36 moves in a direction away from the stop plate 37 of the piston 18, and the piston 18 is urged by the spring 22. Sit on the valve seat 12 and close the valve. When the base end surface 41 of the handle 33 comes into contact with the spring case 21, the engaging piece 36 of the connecting screw 32 does not move any further, and a surplus pressing force is applied more than pressing the valve element 11 against the valve seat 12 by the spring 22. It does not damage the valve 12 without adding it.

[0015]

[Effect of device]

 As described above, the present invention includes the mainstream pipe, the valve box formed on one side of the mainstream pipe, and the actuator integrally assembled with the valvebox, and the mainstream pipe is opened on the inner peripheral surface. The valve box has a valve hole therein, a valve hole for communicating the valve chamber with the valve hole, a diaphragm defining a surface of the valve chamber facing the valve hole, and the diaphragm. The valve has a valve element that projects from the valve chamber side of the ram and that opens and closes the valve hole by moving toward and away from the valve hole.The valve element and diaphragm are advanced and retracted toward the valve hole by the actuator to move the actuator. Since it is a valve opening / closing device that is automatically driven by air operation and can be arbitrarily moved back and forth by manual operation, it is possible to open and close arbitrarily with one valve by air-operated automatic control and manual operation.

Further, in the present invention, for example, in the case of sampling, CIP (cleaning in place) can be performed, in the case of steam sterilization, automatic opening and closing by air operation can be performed, and at the time of sampling, an arbitrary liquid amount can be manually operated. Can be extracted.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a specific embodiment of the present invention.

[Explanation of symbols]

 1 ... Main flow pipe 2 ... Valve box 3 ... Actuator 6 ... Branch hole 8 ... Valve chamber 9 ... Valve hole 10 ... Diaphragm 11 ... Valve 18 ... Piston 32 ... Connecting screw

Claims (2)

[Scope of utility model registration request] 1. A mainstream pipe, a valve box formed on one side of the mainstream pipe, and an actuator integrally assembled with the valve box, wherein the mainstream pipe has a branch hole opened on an inner peripheral surface thereof. The valve box has a valve chamber therein, a valve hole communicating the valve chamber with a branch hole, a diaphragm defining a surface of the valve chamber facing the valve hole, and a valve chamber side of the diaphragm. Was set up,
And a valve element that opens and closes the valve hole by contacting with and separating from the valve hole. The valve element and the diaphragm are moved forward and backward toward the valve hole by the actuator, and the actuator is automatically driven by air operation and manually operated A valve opening / closing device that is moved forward and backward. 2. The valve opening / closing device according to claim 1, wherein the actuator is a single-acting air cylinder, and the piston of the single-acting air cylinder can be driven by a connecting screw protruding from a handle.