JPH07167364A - Connection fitting - Google Patents

Abstract

PURPOSE:To eliminate liquid leakage at the separating time and facilitate washing and mechanical adherence by providing the internal valve stem of a joint with a chamber for washing liquid, and providing a means for discharging washing liquid in the internal valve stem of a joint CONSTITUTION:An upper connecting joint 16 and a lower connecting joint 11 are aligned, and ferrule parts 52b, 52b are clamped by a clamp 35. An upper valve body 49 is then lowered to push down a lower valve body 48 so as to form a fluid passage. A fluid in the upper connecting joint 16 is discharged through a funnel like space 85, and the valve bodies are put back into the original state. There is no liquid leakage even if the valve bodies are separated. Since the mating faces of the upper valve body 49 and lower valve body 48 are soiled, an inner valve contact part and seal member 52e are washed before separation. Washing liquid pressure-fed into a washing chamber 90 is jetted from a nozzle 91 at the tip to wash the seal member 52 and the seal contact part and discharged through the funnel like space 85. The shut-in state by the clamp 35 is then released for detachment, and the seal member 52d and the primary seal contact part are washed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection joint used for transferring fluid. More specifically, the present invention relates to a connection joint that can be incorporated into an automatic connection device and has excellent cleaning properties.

[0002]

2. Description of the Related Art When transferring a fluid, for example, a connecting joint having a male or female structure is often used at the tip of a hose. As such a connection joint, various kinds of joints are commercially available for various fields, and many are easily used as a quick disconnect joint, a so-called quick coupling. In such a joint, an inner valve, which is a kind of check valve, is usually provided at the tip of the joint to prevent leakage at the time of disconnection.

As a typical example, FIG. 9 shows the structure of a conventional connecting joint having an inner valve mechanism and a ball lock mechanism.

First, the inner valve mechanism will be described below.

The inner valve 100 is substantially dish-shaped, and a seal (O-ring) 101 is provided at the tip edge portion thereof, and a seal is obtained by pressing the seal (O-ring) 101 against a valve seat 103 by a spring 102 at the rear. . The spring 102 is for automatically closing the inner valve, and a spring retainer 104 is provided (in the pipe) for fixing the inner valve. Spring retainer 104
Is provided with an opening 105 through which a fluid passes. 1
Reference numeral 06 is a valve shaft, and 107 is a tip projection.

On the other hand, a mechanism for preventing the joint from coming off due to the reaction force when the internal pressure of the fluid acts, that is, a mechanical holding mechanism (mechanical lock) is often required. There have been various proposals for such a mechanism, one example of which is a ball lock in which a ball is locked by being fitted into a recess.

The ball lock mechanism will be described below.

For example, in FIG. 9, one groove (recess) 1 of the male pipe tip portion 2 and the through hole 5 provided in the female pipe tip portion 4 are provided.
A steel ball 3, for example, is fitted into the core to perform mechanical retention. In the female pipe tip portion 4, through holes 5 are provided at several places evenly around the tip of the female pipe wall.
A ball 3 is movably fitted into the. A sleeve 6 for pressing the ball and a spring 7 for restoring the sleeve 6 are provided outside thereof.

Reference numeral 8 indicates a female pipe, and 9 indicates a male pipe. A stopper 10 for preventing the sleeve from falling off is provided at the tip of the female pipe 8 (specifically, there are various types such as a half ring, a snap ring, and a spring wire). 120 is the centerline of the tube. Furthermore, an O-ring 111 is provided on a part of the inner wall of the distal end portion of the female tube for fluid sealing.

The operation (in the case of manual operation) of this type of connection joint will be described. At the time of connection, first, the sleeve 6 is pulled in the direction of the arrow r, the fixation of the ball 3 is released, and the ball is made movable to insert the male pipe 9 or the female pipe 8.
After inserting the male tube 9, the sleeve 6 is moved in the direction opposite to the arrow r and returned to the original position. Here, the spring 7 is built in so as to automatically return when the sleeve 6 is released. At the time of insertion, the inner valves in the male and female pipes move to a position where they balance with the spring force while contacting and pressing each other at the tip projections 107. The product flows through the gap formed between the inner surface of the male and female pipes and the outer side of the inner valve and the fluid passage opening 105. As shown in FIG. 9, in this state, the sleeve 6 presses the ball 3 and is locked without being disengaged even if the fluid internal pressure acts. This locking mechanism is necessary to prevent the male and female pipes from pulling apart from each other when the fluid internal pressure acts.

At the time of disconnection, since the inner valve 100 is designed to be seated on the valve seat (103) by a spring and then separated, it can be detached without leakage to the outside. In the figure, reference numeral 108 is a flow path.

[0012]

Although the connecting joint having such a structure is simple in structure and easy to operate, it is necessary to disassemble and remove these internal parts before cleaning. Further, as a mechanical lock mechanism, in addition to the ball lock described above, a method of mechanically performing clamping (for example, Japanese Patent Laid-Open No. 4-69487) has been proposed. However, this complicates the perimeter of the joint as it requires a mechanism around the joint. Also, the device becomes large-scale.

Further, in many conventional detachable joints, the contact surfaces of the inner valves which are in the fluid passage and are in contact with the fluid cannot be cleaned before they are separated, so that they are separately cleaned after the separation. There was a need. When the inner valve is closed and then separated, the product liquid may drip from the contact surface between the inner valves described above and is often contaminated. In order to treat the residual liquid on such a contact surface, a special mechanism (for example, a suction device) is required around the periphery.

In fields where sanitary properties are required (typical examples are fields such as foods, pharmaceuticals and beverages), there is a growing demand for automation, and automatic connection is desired. But on the other hand,
Since it is necessary to clean the pipes and joints each time after the transfer, the disassembling and cleaning work is frequently performed. Therefore, the structure in which the internal parts are incorporated is not preferable.
Therefore, it is desired that the internal structure is simple, there is no liquid reservoir, and the cleaning liquid can flow without stagnation, that is, that the cleaning is easy.

Further, it is desired that the surface which was in contact with the fluid before separation can be cleaned and that the mechanical holding mechanism be simple. This is because if the surrounding mechanism becomes complicated and the product leaks into the gap and enters the gap, spoilage fermentation and the like occur, which is not preferable in quality control.

An object of the present invention is to provide a connection joint which solves the above-mentioned problems and which can be incorporated into an automatic connection device and has excellent cleanability.

[0017]

In order to solve the above-mentioned problems, the present invention provides (1) a pressure-resistant cylinder, a) an opening for a fluid passage portion, b) an opening having a valve seat portion, and c) the valve seat portion. An inner valve for opening and closing the flow passage, which has a sealing member for sealing between the valve seat and the valve seat portion, d) inner valve driving means provided on an extension of the shaft of the inner valve, e) the inner A cleaning chamber provided in the shaft of the valve, and f) a joint provided with a cleaning liquid ejection port provided at the tip of the shaft of the inner valve, and (2) a pressure-proof cylinder, and a) an opening of a fluid passage portion. B) an opening having a valve seat portion and facing the joint, c) a seal member facing the valve seat portion and for sealing between the valve seat portion, and facing the inner valve of the joint An inner valve for opening and closing the flow path, d) an inner valve drive means provided on an extension of the shaft of the inner valve, and e) washing from the cleaning liquid jet port of the joint in the inner valve shaft. Providing a connection fitting external discharge flow path of the liquid is composed of a joint consisting provided.

[0018]

【Example】

(Embodiment 1) FIG. 1 is an overall explanatory view of a connecting joint of the present invention showing a state before a pair of joints are joined. In the figure, 16 is an upper connection joint, 37 is an inner valve drive actuator which is a driving means of an inner valve of the upper connection joint, 11 is a lower connection joint, and 36 is a mechanical connection for holding a pair of upper and lower connection joints. A driving device of the clamp mechanism, and 35 is a clamp. 38 is an upper connecting pipe, 39 is a lower connecting pipe, 25
Is a cleaning liquid supply port.

FIG. 2 is a view showing a state in which the connection joints of FIG. 1 are combined. 1 and 2, the inner valve drive actuator 37 is provided in the upper connection joint, and the inner valve drive means in the lower joint is urged so as to be able to automatically return. A unit with a built-in spring is used.

FIG. 3 is a cross-sectional view of a typical one of the connection joints shown in FIGS. 1 and 2.

In FIG. 3, an upper body portion 5 having a spherical shape as a whole.
An upper valve body 49 is provided in the inside 2. A valve seat 52a for forming a sealed state with the outer edge portion of the upper valve body 49 is provided on the lower portion of the spherical body.

The upper valve body 49 provided at the center of the spherical barrel 52 has a substantially inverted T shape. This is to ensure a smooth flow of fluid. Due to the shapes of the spherical barrel 52 and the upper valve body 49, a smooth fluid flow area can be secured even when the valve is in the open state. Furthermore, since these shapes can eliminate the breakage of the liquid and the accumulation of the liquid, the cleaning can be effectively performed.

A valve seat portion 52 is provided on the outermost periphery of the upper valve body 49.
An O-ring 52c is provided as a seal member for ensuring a sealed state with a. This O-ring is made of a flexible material.

The valve shaft 57 at the center of the upper valve body 49 extends upward, penetrates the upper top plate 54 of the spherical barrel, and protrudes to the outside, and the upper end thereof is the internal drive actuator 37.
Are linked to.

The shape of the body is preferably spherical, but not limited to this, from the viewpoints of pressure resistance, weight reduction, and securing of a flow area around the valve body during valve operation.

An upper top plate 54 is fixed to the upper part of the spherical body 52 as a body by a fixing clamp 72. An opening through which the valve shaft 57 penetrates is provided at the center of the upper top plate 54, and a seal member 80 for preventing liquid leakage is provided inside the opening. A valve seat 52a is attached to the lower portion of the spherical barrel 52 to enable a seal with the upper valve body 49.

Further, a ferrule portion 52b having a tapered tip is provided outside the valve seat 52a. This is used for tightening (clamping) when mechanically holding the lower joint, as will be described later.

The lower portion of the valve seat 52a is formed with an O-
A ring 52d is provided. Of course, the sealing member is made of a flexible material.

The tip of the valve shaft 57 is connected to driving means for opening and closing the upper valve body 49 (3 in FIG. 1).
7). Such a driving means is often an air cylinder incorporating a return spring, but the connecting joint of the present invention is not limited to this, and may be an electric motor if necessary. Good.

A portion (not shown) connecting the valve shaft and the driving portion is interposed between the driving means and the spherical barrel. This portion is further provided with a cleaning liquid supply port 25 in communication with the cleaning chamber 90, and the cleaning liquid is supplied to the tip of the valve shaft 57 from there.

The valve shaft 57 has a concentric double structure and is connected to a portion where the cleaning liquid enters inside (cleaning chamber 90). The cleaning liquid passes through the space inside the chamber at the ejection port at the tip of the chamber, and is ejected toward the surroundings from the ejection port 91 portion provided at the tip. Therefore, a small opening may be provided in an appropriate gap or outward.

Another joint, that is, the lower joint 11, that is paired with the joint having the above structure, that is, the lower joint 11 will be described below.

In FIG. 3, the lower valve body 48 has a funnel shape, and a seal member 52c for sealing with the valve seat 52a of the lower connection joint 11 is provided on the outermost periphery thereof.

On the upper surface of the lower valve body 48, the upper connecting joint 1
A seal member 52e for forming a sealed state with the lower surface of the upper valve body 49 of the upper connection joint 16 is provided inside the seal member 52d of No. 6 above.

A central open space 85 is formed in the central portion of the lower valve body 48, and its lower portion communicates with the drainage pipe 30. That is, this space is connected below the lower valve shaft 58, and the tip of the lower valve shaft 58 is connected to the drain line 31.
It is connected to the. The valve shaft 58 extends through the bottom plate 55 and extends downward.

The lower bottom plate 55 is integrated with the spherical barrel by a clamp 73.

In FIG. 3, there is a unit using only the spring 86 for automatic return as the inner valve driving means of the lower connection joint.
The connecting joint of the present invention is not limited to this, and the same driving means as the upper connecting joint 16 can be used.

Similar to the upper body portion 52, a ferrule portion 52b for attaching a clamp for mechanical holding is provided on the upper portion of the lower body portion 53.

In the above description, the upper and lower sides are not particularly specified, and it is desirable to select them as needed.

The constituent material of the joint is not particularly limited, but stainless steel is often used in the food industry. In addition, the surface in contact with the fluid is often buffed.

Next, the use of the above connection joint will be described.

As described above, FIG. 1 is an overall configuration diagram of the connection joint of the present invention, showing a state before the joint is connected. The holding plate 21 that supports the joint is moved by the linear drive device 20 shown in the figure, so that the upper connection joint 16 and the lower connection joint 11 are connected. in this case,
One is fixed and only one is driven. Electric or air energy can be used as the drive source of the linear drive device 20, but it is preferable to select it in consideration of the usage environment.

At the time of this coupling, the guide mechanism for aligning the cores and the appropriate displacement absorbing mechanism for absorbing the misalignment are used as in the case of the conventional joint and are not shown. For example, a method often used as a guide mechanism is a tapered cone having a gradient or a combination of a guide pin and a guide hole.

As a displacement absorbing mechanism, there is a mechanism in which the entire joint is slidably supported right and left via free bearings.

After centering is performed by the guide mechanism and the displacement absorbing mechanism as described above, the joints are finally pressed against each other. With this, an appropriate surface pressure is applied to the seal member 52d, and the seal member 52d is ready for sealing.

In this state, the ferrule portion 52b is tightened by the clamp 35 to perform mechanical holding, that is, mechanical locking. As this clamp, for example, a half-clamp or a lever-type clamp used for tightening sanitary parts / devices can be used, and the tightening can be automatically realized by using the clamp. The ferrule portion 52b is tapered, and by tightening with the same tapered clamp 35, a large tightening force, that is, a surface pressure can be obtained with a small force due to the wedge effect. Therefore, even if the fluid pressure is large, a small force is sufficient.

If the required sealing surface pressure is obtained, the clamp is not limited to the semicircular half-clamp, but a partial circular clamp may be used.

The means for tightening the half-split clamp 35 may be an air cylinder or an electric motor. In the case of an air cylinder, the solenoid valve should be equipped with a check valve so that air to the cylinder is not lost. Alternatively, an air cylinder with a brake may be used. Further, when using an electric motor, it is preferable that it is provided with a brake. Further, in the case of using an electric motor, usually, a large force can be obtained by interposing a gear in the middle for deceleration. FIG. 2 shows a state in which tightening by the clamp is completed. As described above, the wedge effect makes it possible to obtain a large tightening force with a small force, so that the clamp drive device 36 becomes compact.

Next, the inner valve drive actuator 37 (provided on the upper joint in FIGS. 1 and 2) provided on either side is actuated. This inner valve is normally set to be closed by a spring, and operates so as to be opened by, for example, introducing air.

FIG. 4 shows the upper valve body 4 on the upper connection joint 16 side.
It is a figure when 9 is operated and it is opened. That is, the upper valve body 49 descends and further pushes down the lower valve body 48 of the lower connecting joint 11. This forms a fluid passage.

Since the upper valve body 49 comes into contact with the lower valve body 48 and coalesces to move further downward, the fluid present in the upper connection joint 16 within a very short time before coming into contact and coalescing. A small amount of the funnel-shaped space 85 provided inside the lower valve body 48
Through the drainage pipe 30 to the drain line 31.

When an air cylinder is provided on the upper side, the lower valve body 48 of the lower connecting joint 11 need only have a spring unit 86 for automatic return. Instead of the air cylinder, a unit having a spring is used. All you have to do is

When the necessary circulation operation is completed, the supply of air to the air cylinder is stopped, the valve body is returned to the original state, and the state shown in FIG. 5 is obtained. With this, the liquid does not leak even when separated.

Here, since the mating surfaces of the upper valve body 49 and the lower valve body 48 are dirty, the inner valve contact portion 61 and the seal member 52e are washed before disconnecting and disconnecting.

For this cleaning, a cleaning chamber 90 is provided on the concentric shaft of the upper valve body shaft 57.

FIG. 5 is a diagram showing a case where the cleaning chamber 90 is used to clean the surfaces.

Cleaning chamber 9 concentrically inside the valve body axis
0 is provided. The cleaning liquid is supplied to this space from above the valve shaft.

The supplied cleaning liquid is ejected inward by the ejection port 91 provided at the tip of the chamber. There are various jet outlets, but there are a jet nozzle that uses a narrow gap, a jet nozzle that uses diagonally provided pores, and a jet nozzle that is perforated in a cutting line direction so that the jet is spiral.

The cleaning liquid supplied under pressure is jetted at the tip 9
1, the seal member 52e for sealing the upper and lower valve bodies and the seal contact portion 61 are washed, and the funnel-shaped central open space 85 provided inside the lower valve body and the drainage provided at the lower portion thereof. It is discharged from the pipe 30 to the outside.

This is a face-to-face CIP (Cleaning in Place)
Since the contact surface can be washed before the separation, the surrounding area does not get dirty after the separation.

After this, the tightening by the half clamp 35 for holding the machine is released and released.

A sealing member (primary seal) 52d for sealing the upper and lower spherical cylinders and forming a fluid passage is provided on the ferrule portion 52b of the spherical cylinder. This part needs to be cleaned because it is the part where the fluid was in contact, but it cannot be cleaned before the separation. Therefore, in order to clean the seal member 52d, the primary seal contact portion 62, and the insides thereof, after the separation, the cleaning chamber 9 shown on the left is used.
A cleaning cap having a structure similar to that of 0 is applied to the corresponding portion for cleaning.

FIG. 6 is a view showing an example of a cleaning device 95 with a cap for cleaning the primary seal contact part 62 in the ferrule part 52b of the lower spherical cylinder and the inside thereof. After the joint is detached, this cap is attached to the upper part of the spherical body by an attaching device (not shown), and is pressed and sealed by an appropriate pressing force to perform cleaning. This cap is pressed against the outer edge of the O-ring 52d provided on the ferrule 52b of the spherical body.

Therefore, the inner diameter of the cap is the O-ring 52.
It is larger than the mounting outer diameter of d. If such a cleaning device is appropriately provided on the necessary side, cleaning can be performed as needed. The above is the cleaning of the primary seal contact part on the lower joint side, but the seal member 52 on the upper joint side is cleaned.
For d, a similar cap is attached with a reversed structure for cleaning (drainage is allowed, of course). An O-ring is provided on the outer edge of the cap in order to prevent the cleaning liquid from being scattered around the apparatus by this operation.

(Embodiment 2) Next, another example of the connection joint of the present invention will be described with reference to FIGS. In these figures, the reference numerals are the same as those in FIGS.

FIG. 7 is a sectional view of the joint before connection.

Here, the cleaning of the inner valve contact portion 61 and the seal member 52e, which is performed before disconnecting and disconnecting the upper connection joint 16 and the lower connection joint 11, will be described.

In the connection joint of this embodiment, the first embodiment is used.
Unlike the above, the cleaning chamber 90 has a lower valve body 48.
It is provided coaxially inside the central open space 85.
The cleaning liquid is supplied to the cleaning chamber from the lower part of the shaft.
Further, the upper valve shaft 49 may have a concave central portion so that the upper valve shaft 49 does not hit the tip of the cleaning chamber and the cleaning liquid hits the inner valve contact portion 61.

The supplied cleaning liquid is ejected inward by the ejection port 91 provided at the tip of the chamber. In this embodiment, the ejection ports 91 are provided at three locations, but more ejection ports may be provided in consideration of the pressure of the cleaning liquid and the like. It goes without saying that it is preferable that the same cleaning effect can be obtained with a small number of jets. Needless to say, this is also preferable as long as the cleaning effect can be obtained by reducing the number of ejection ports as compared with the case of this embodiment. There are various forms of the ejection port, but there are one that uses a narrow gap, one that uses obliquely provided pores, and one that is perforated in the cutting line direction so that the ejection is spiral.

The cleaning liquid supplied under pressure is jetted at the tip 9
1, the seal member 52e for sealing the upper and lower valve bodies and the seal contact portion 61 are washed, and the funnel-shaped central open space 85 provided inside the lower valve body and the drainage provided at the lower portion thereof. It is discharged from the pipe 30 to the outside.

This is the above-mentioned inter-surface CIP, and since the contact surface can be washed before the separation, the surroundings do not become dirty after the separation.

After this, the tightening by the half-clamp 35 is released, and the half-clamp 35 is released.

A sealing member 52d for sealing the upper and lower spherical cylinders and forming a fluid passage is a ferrule portion 5 of the spherical cylinder.
It is provided in 2b. This part needs to be cleaned because it is the part where the fluid was in contact, but it cannot be cleaned before the separation. After cleaning, the cap as shown in FIG. 8 is installed on the lower joint in order to clean the seal member 52d, its contact surface and its inside. After the joint is detached, this cap is attached to the upper part of the spherical body by an attaching device (not shown), and is pressed and sealed by an appropriate pressing force to perform cleaning. This cap is pressed against the outer edge of the O-ring 52d provided on the ferrule 52b of the spherical body.

Therefore, the inner diameter of the cap is the O-ring 52.
It is larger than the mounting outer diameter of d. If such a cleaning device is appropriately provided on the necessary side, cleaning can be performed as needed. This operation is necessary to prevent the cleaning liquid from scattering around the device.

The portion where the valve shaft penetrates the spherical body top plate 54 or the bottom plate 55 becomes a sliding seal (80, 81), and an appropriate shape and material sealing member is used depending on the property of fluid, operating temperature, presence of decay, etc. To be For the sliding seals 80 and 81, as lip seals, a tongue-shaped seal cut obliquely to the fluid contact side can be used, and a product attached to the shaft even when the shaft moves. Since it will be scraped off, it will not leak outside. However, there is a limit to this, and if it is necessary to frequently clean the sliding seal portion, the water-filled type can be used. If this water injection type is used on the lower side, it can be used for leak detection. Further, when it is feared that liquid may enter the shaft seal portion, a bellows seal is used as an aseptic seal. in this case,
Cleaning the shaft seal is not a problem, but has the disadvantage that the bellows has a limit of durability and is costly.

[0076]

As described above, the joint of the present invention is provided with the chamber for the cleaning liquid in the valve shaft in the joint and the means for discharging the cleaning liquid in the inner valve shaft or the corresponding inner valve shaft. Therefore, it has the following advantages. (1) Since the structure has the inner valve, it is possible to prevent the liquid from leaking at the time of disconnection. (2) Cleaning is easy because there are few mechanical parts provided in the fluid passage. (3) Cleaning of the contact surface of the inner valve can be performed before separation, CIP can be realized, and product liquid does not drip when separated, and the surroundings are not contaminated. (4) Since mechanical fixation can be easily performed, the mechanism can be simplified. (5) The primary seal surface can be easily washed. (6) Various methods can be adopted for the seal member of the shaft portion. (7) Disassembly and cleaning are easy. (8) The pool of liquid can be minimized, and the cleaning liquid does not flow stagnation.

[Brief description of drawings]

FIG. 1 is a schematic overall configuration diagram showing a state before coupling of one embodiment of a connection joint of the present invention.

FIG. 2 is a schematic overall configuration diagram showing a connected state of the connection joint of FIG.

FIG. 3 is a cross-sectional view of an example of a connection portion of the connection joint of FIG.

4 is a cross-sectional view showing a state in which the connection joint of FIG. 3 is connected and a fluid flows.

FIG. 5 is a cross-sectional view showing a state in which the joint of FIG. 4 is closed and face-to-face cleaning is performed.

FIG. 6 is a cross-sectional view of an example of cleaning the seal surface of the lower joint with a cleaning device after the connection joint of the present invention is detached.

FIG. 7 is a sectional view of a connection portion showing a state before coupling of another embodiment of the connection joint of the present invention.

8 is a cross-sectional view of an example in which the sealing surface of the lower joint is cleaned by a cleaning device after the connection joint of FIG. 7 is detached.

FIG. 9 is a sectional view of an example of a conventional connection joint.

[Explanation of symbols]

 1 1 groove 2 male pipe tip 3 ball 4 female pipe tip 5 through hole 6 sleeve 7 spring 8 female pipe piping 9 male pipe piping 10 stopper 11 lower connection joint 16 upper connection joint 20 linear drive device 21 holding plate 25 Cleaning liquid supply port 30 Drain pipe 31 Drain line 35 Clamp 36 Clamp driving device 37 Inner valve driving means (actuator) 38 Upper connecting pipe 39 Lower connecting pipe 48 Lower valve body 49 Upper valve body 52 Upper body part 52a Valve seat 52b Ferrule part 52c Seal member (O-ring) 52d Seal member (O-ring; primary seal) 52e Seal member (O-ring) 53 Lower body part 54 Upper top plate 55 Lower bottom plate 57 Valve shaft 58 Lower valve shaft 61 Seal contact part 62 Primary seal contact part 65 Cap 72 Clamp 73 Clamp 80 Upper liquid leak seal 81 Lower Liquid Leakage Seal 85 Central Open Space 86 Spring Unit 90 Cleaning Chamber 91 Jet Port 95 Cleaning Device 100 Inner Valve 101 O-Ring 102 Spring 103 Valve Seat 104 Spring Presser 105 Opening 106 Valve Shaft 107 Tip Protrusion 108 Flow Path 111 O- Ring 120 tube centerline

Claims (1)

[Claims] 1. A pressure-resistant cylinder having: (a) an opening for a fluid passage portion; (b) an opening having a valve seat portion; and (c) a seal facing the valve seat portion and facing the valve seat portion. An inner valve for opening and closing a flow path, which has a seal member, d) an inner valve driving means provided on an extension of the shaft of the inner valve, e) a cleaning chamber provided in the shaft of the inner valve, and f) A joint provided with a cleaning liquid jet port provided at the tip of the cleaning chamber; (2) a pressure-resistant cylinder; a) an opening for a fluid passage portion; b) an opening having a valve seat portion and facing the joint; c) an inner valve for opening and closing a flow path, which has a sealing member facing the valve seat portion and for sealing between the valve seat portion and the inner valve of the joint, and d) the inner valve An inner valve driving means provided on the extension of the shaft, and e) a joint provided with a flow path for external discharge of cleaning liquid from the cleaning liquid jet port of the joint in the inner valve shaft. Et al made the connection joints.