JPH0575570U - Closed container - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a closed container provided with a valve device that can cope with automation of opening and closing operations of a closed space with a simple structure without increasing the size of the device. [Structure] The open ends 12a and 13a of the upper container 12 and the lower container 13 are connected to each other via a seal packing 14 to form a closed space, and at least one of the upper container 12 and the lower container 13 is The valve shaft 24 is biased from the inside of the valve opening 23 of the ring-shaped valve body 22 to close the closed space, and the valve shaft 24 extends from the valve opening 23 of the ring-shaped valve body 22 to the upper container 12 or the lower container 13. Is provided with at least one valve device 21 that retracts to open the closed space.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a closed container, and more particularly to a closed container with an improved structure of a valve device for opening and closing a closed space.

[0002]

[Prior Art]

 Conventionally, as this type of closed container 1, for example, one having a structure as shown in FIG. 4 is known. As shown in the figure, the closed container 1 is formed, for example, so as to be vertically separable, and accommodates the work W therein. A seal packing 2 is provided at a contact portion between the upper container 1a and the lower container 1b of the closed container 1 so that the airtightness of the inside of the closed container 1 is maintained when these are integrated. It has become. The upper container 1a is provided with lifting means 3 for lifting and lowering the same to divide or integrate the closed container 1. Further, a flange nozzle 4 is formed in the lower container 1b for connecting a piping system (not shown) according to the purpose when vacuuming or purging the closed container 1 or the like. A gate valve 5 and the like are attached to the flange nozzle 4 via a seal packing (not shown) in order to maintain the airtightness of the closed container 1.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional closed container 1, in order to automate the opening / closing operation of the gate valve 5 and the like, a pressure fluid system such as hydraulic pressure or pneumatic pressure must be provided for this, and the size of the device is increased. In addition, there is a problem that it is not possible to cope with the opening and closing operation by a manipulator or the like, which accompanies the recent robotization.

In view of the above problems, an object of the present invention is to provide a hermetically sealed container provided with a valve device which can cope with automation of opening / closing operation of a hermetically sealed space without increasing the size of the device. There is.

[0005]

[Means for Solving the Problems]

 According to the closed container according to the present invention, the opening ends of two bottomed cylinders are connected to each other via a seal packing to form a closed space, and at least one of the bottomed cylinders is formed. In addition, the valve shaft is biased from the inside toward the valve opening of the ring-shaped valve body to close the closed space, and the valve shaft moves backward from the valve opening of the ring-shaped valve body into the bottomed cylinder. This is achieved by providing at least one valve device that opens the closed space by means of a valve. In the above structure, preferably, at least one of the bottomed cylinders is provided with a moving means for moving the bottomed cylinders to divide or integrate the two bottomed cylinders.

[0006]

[Action]

 According to the above configuration, since the open ends of the two bottomed cylinders are connected to each other via the seal packing to form the closed space, the work can be easily stored in the closed container by dividing the closed space. Yes, if these are integrated, the airtightness of the closed container is maintained.

At least one of the bottomed cylinders is provided with at least one valve device, and the valve device biases the valve shaft from the inside toward the valve opening of the ring-shaped valve body to form a closed space. The valve shaft is closed so that the valve shaft retracts from the valve opening of the ring-shaped valve body to the inside of the bottomed cylindrical body to open the sealed space. The valve device can be opened by a simple operation of retreating from the valve opening of to the inside of the bottomed cylinder. Therefore, for example, it is possible to cope with the recent robotization using a manipulator or the like, and it is possible to automatically open and close the enclosed space with a simple structure without increasing the size of the device.

By providing at least one of the bottomed cylinders with the moving means, the work of dividing or integrating the above two bottomed cylinders can be performed very easily.

[0009]

【Example】

 Hereinafter, a preferred embodiment of the closed container according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side sectional view of an airtight container according to the present invention. As illustrated, a closed container 11 is placed on the base 10. The closed container 11 has a cylindrical shape with both ends closed as a whole, and is formed so as to be divided into an upper container 12 and a lower container 13 in order to store a work W therein. .. The upper container 12 is formed of a bottomed cylindrical body, and the lower container 13 is formed of a bottomed rectangular cylindrical body. The upper container 12 and the lower container 13 are adapted to be connected to each other by bringing their open end portions 12a and 13a into contact with each other. A seal packing 14 is provided at the open end 12a of the upper container 12. By providing the seal packing 14 between the upper container 12 and the lower container 13, the airtightness of the closed container 11 is maintained when these are integrated. In the present embodiment, the closed container 11 is formed of a cylindrical body whose both ends are closed, but the present invention is not limited to this, and may be formed in another shape such as a hollow rectangular parallelepiped. Further, the hermetically sealed container 11 does not necessarily need to be formed so as to be vertically separable, but may be formed so as to be laterally separable as long as it is hermetically sealed when integrated. Further, the seal packing 14 may be provided in the lower container 13 instead of being provided in the upper container 12.

Further, the upper container 12 is provided with a moving means 15 for dividing or integrating the closed container 11, and the moving means 15 is supported by the base 10. In the present embodiment, the moving means 15 is composed of a cylinder device 16 driven by a pressure fluid such as hydraulic pressure or pneumatic pressure. The cylinder device 16 is connected to a pressure pump 18 via fluid supply / discharge lines 17a and 17b. The fluid supply / discharge lines 17a, 17b are provided with a switching valve 19 for switching the supply / discharge of pressure fluid, and a fluid storage tank 20 is connected to the switching valve 19.

In the present embodiment, the moving means 15 is formed by the cylinder device 16, but not limited to this, for example, a mechanism such as a ball screw and a nut may be adopted. Although the workability is inferior because the moving means 15 is not provided in 11, the ceiling crane or the like may be used. Further, the upper container 12 may be moved horizontally instead of being moved up and down. Further, it goes without saying that the upper container 12 may be supported on a gantry or the like and the base 10 on which the lower container 13 is placed may be moved up and down.

Further, two valve devices 21 are provided on the side wall of the lower container 13. As shown in FIG. 2, the valve device 21 basically advances into a ring-shaped valve body 22 attached to a side wall of the lower container 13 and a valve opening 23 of the ring-shaped valve body 22. And the valve shaft 24 to be retracted. The ring-shaped valve body 22 includes a cylindrical boss portion 22a and a ring-shaped protruding portion 22b for attaching to the side wall of the lower container 13. A plurality of bolt holes 25 are formed at equal intervals in the overhanging portion 22b of the ring-shaped valve body 22, and bolts 26 are inserted into the bolt holes 25 and fastened to the side wall of the lower container 13. There is. A seal packing 27 such as an O-ring is provided at a portion of the overhanging portion 22b that comes into contact with the side wall of the lower container 13, and a gap between the ring-shaped valve body 22 and the side wall of the lower container 13 is provided. Is sealed. A reduced diameter portion 22d is formed at the tip of the boss portion 22a of the ring-shaped valve body 22 via a tapered portion 22c. The reduced diameter portion 22d is provided with a seal packing 28 such as an O-ring for sealing between the valve opening 23 of the ring-shaped valve body 22 and the valve shaft 24 advanced and retracted into the valve opening 23. ing. The valve shaft 24 includes a head portion 24a for opening and closing the valve port 23 of the ring-shaped valve body 22, and a shaft portion 24b supported by a bearing 29 provided in the ring-shaped valve body 22. .. A cylindrical knob portion 24c is formed at the tip of the head portion 24a of the valve shaft 24. Further, a taper protruding portion 24d is formed on the inner side of the head portion 24a of the valve shaft 24. A spring receiver 30 is provided near the bearing 29 in the ring-shaped valve body 22. A compression coil spring 31 is provided between the spring receiver 30 and the taper protruding portion 24d of the valve shaft 24. Further, a large number of holes (not shown) are formed near the spring receiving portion of the spring receiving portion 30 so that the spring containing space and the inside of the lower container 13 are communicated with each other. Incidentally, reference numeral 32 in the figure denotes a snap ring for fixing the spring receiver 30.

That is, the valve shaft 24 of the valve device 21 is attached to the valve opening 23 of the ring-shaped valve body 22 so as to be able to move back and forth by the compression coil spring 31, and the compression coil spring 31 causes the valve shaft 24 to move in the ring-shaped valve body. When the valve opening 23 of the valve body 22 is biased, the taper protruding portion 24d of the head portion 24a of the valve shaft 24 contacts the taper portion 22c formed at the tip of the boss portion 22a of the ring-shaped valve body 22. With the seal packing 28, the valve opening 23 and the valve shaft 24 are sealed to close the valve opening. On the other hand, the knob portion 24c formed on the head portion 24a of the valve shaft 24 is pushed by the advancing / retreating rod device 34 of the relay unit 33, which will be described later, so that the valve shaft 24 passes from the valve opening 23 of the ring-shaped valve body 22 to the valve shaft 24. When the valve is retracted into the lower container 13, the valve port 23 is opened, and the inside of the hermetically sealed container 11 is communicated with the outside by a large number of holes formed in the spring receiver 30.

Although the valve device 21 is attached to the side wall of the lower container 13 in this embodiment, it may be attached to the upper container 12. Further, it is not always necessary to attach the two valve devices 21 to the closed container 11, and it is sufficient that at least one valve device 21 is attached.

FIG. 3 is a relay unit including an advancing / retreating rod device 34 for pushing the knob portion 24c formed on the head portion 24a of the valve shaft 24 to retract the valve shaft 24 into the lower container 13. 33 is shown. As shown in the figure, the relay unit 33 includes a communication nozzle 35 that is in airtight contact with the flat surface portion 22e of the ring-shaped valve body 22 of the valve device 21, and a hollow in which the communication nozzle 35 is attached. Unit main body 36, the above-mentioned advancing / retreating rod device 34 for advancing and retreating from the inside of the unit main body 36 to the inside of the communicating nozzle 35, for engaging and retracting the valve shaft 24, and the unit main body 36. At least one supply / exhaust nozzle 37 attached to 36.

Specifically, the unit body 36 of the relay unit 33 is formed by a rectangular parallelepiped casing, and the side wall facing the valve device 21 has a ring-shaped valve body of the relay unit 33 and the valve device 21. A communication nozzle 35 for connecting with 22 is provided. The inner diameter of the communicating nozzle 35 is formed to be larger than the outer diameter of the head portion 24a of the valve shaft 24 inserted into the ring-shaped valve body 22, and the outer diameter of the communicating nozzle 35 is equal to that of the ring-shaped valve. The outer diameter of the boss portion 22a in the main body 22 is substantially equal to the outer diameter of the boss portion 22a. Further, a seal packing 38 such as an O-ring is provided on the flat surface portion 35a of the communication nozzle 35 so as to airtightly contact the flat surface portion 22e of the ring-shaped valve body 22.

Further, in the relay unit 33, an advancing / retreating rod device 34 for engaging with the valve shaft 24 and retracting it is provided. The advancing / retreating rod device 34 is provided in a cylindrical rod guide 39 supported by the unit body 36, and the rod guide 39 is coaxially and airtightly connected to the communicating nozzle 35. Immediately, the communication nozzle 35 and the rod guide 39 penetrate the unit body 36 in a straight line, and the unit body 36 is attached to the unit body 36 via seal packings 40 and 41.

The advancing / retreating rod device 34 includes a rod 42 that is inserted into a rod guide 39, a pressing portion 42a formed by reducing the diameter of an end portion of the rod 42 on the communication nozzle 35 side, and the other end portion. And a second cylinder device 43 formed in. The rod 42 is supported by a bearing 44 formed on the inner peripheral wall of the rod guide 39. The cylinder device 43 is formed in the rod guide 39 and is driven by a pressure fluid such as hydraulic pressure or air pressure. By supplying and discharging the pressurized fluid to and from the second cylinder device 43, the rod 42 moves back and forth in the rod guide 39. Specifically, the piston 43a of the second cylinder device 43 moves in the cylinder chamber 43b, so that the rod 42 moves back and forth in the rod guide 39. A seal packing 45 such as an O-ring is provided on the inner peripheral wall of the rod guide 39 near the second cylinder device 43, and the inside of the cylinder chamber 43b is sealed. A seal packing 46 such as an O-ring is provided on the outer peripheral portion of the piston 43a, and the interior of the cylinder chamber 43b is airtightly separated by the piston 43a.

At the end of the unit main body 36 on the side of the second cylinder device 43, the opening of the rod guide 39 is closed to define the cylinder chamber 43b, and a rectangular support plate protruding in all directions is formed. 47 is attached. The support plate 47 is attached to the ends of the rod guide 39 by bolts 49 via seal packing 48 such as an O-ring, and through holes 50 are formed at the four corners. Unit support rods 51 are inserted into the through holes 50 of the support plate 47, respectively. Threaded portions 51a are formed at both ends of each unit supporting rod 51. One threaded portion 51a is fastened to the unit main body 36, and the other threaded portion 51a is inserted into the rectangular frame 52 and the nut 51b is used. It is fixed. A third cylinder device 53 is attached to the center of the frame 52, and the cylinder device 53 is driven by a pressure fluid such as hydraulic pressure or pneumatic pressure. The piston rod 54 of the third cylinder device 53 is inserted into a through hole 52 a formed in the frame 52, and is fastened and fixed to the central portion of the support plate 47 via an intermediate block 55. That is, the support plate 47 that closes the opening of the rod guide 39 by supplying and discharging the pressurized fluid into and from the third cylinder device 53 is bridged between the unit body 36 and the frame 52. The rod guide 39 is slidably moved in the unit main body 36 by being guided along the support rod 51. With the seal packings 40 and 41 provided on the unit body 36, when the rod guide 39 slides in the unit body 36, the airtightness therebetween is maintained. Is becoming

Further, a supply / discharge nozzle 37 is attached to the unit body 36 of the relay unit 33, and the supply / discharge nozzle 37 is hermetically connected to the rod guide 39. A leak inspection line, a vacuum drawing line, a purge line (not shown), etc. are connected to the supply / discharge nozzle 37 via a pipe fitting (not shown) such as teeth. In the present embodiment, a leak inspection line, a vacuum drawing line, and a purge line were connected to one supply / discharge nozzle 37 via a pipe fitting, but three supply / discharge nozzles 37 were attached to the relay unit 33. Then, a leak inspection line, a vacuum line and a purge line may be connected to each. The same applies to the case where a line used for other purposes is connected to the supply / discharge nozzle 37.

Next, the operation of the above embodiment will be described. As described above, since the open end portions 12a and 13a of the upper container 12 and the lower container 13 are in contact with each other via the seal packing 14 to form a closed space, the upper container 12 and the lower container 13 are separated. For example, it is easy to store the work W and the like inside the closed container 11, and by integrating these, the airtightness of the closed container 11 is maintained.

Further, by providing the upper container 12 with the moving means 15, the work of dividing or integrating the upper container 12 and the lower container 13 can be performed very easily. Specifically, the switching device 19 is operated in the cylinder device 16 as the moving means 15 to supply and discharge the pressure fluid from the pressure pumps 18 of the fluid supply lines 17a and 17b, and the upper container 12 is raised and hermetically sealed. The container 11 is divided into an upper part and a lower part, and a work W is housed inside the container. Then, the switching valve 19 is switched to reversely supply and discharge the pressure fluid from the pressure pump 18 of the fluid supply lines 17a and 17b, and the upper container 12 is lowered to integrate the closed container 11.

Further, the lower container 13 is provided with two valve devices 21, and the valve device 21 closes the hermetically closed space by urging the valve shaft 24 from the inside toward the valve opening 23 of the ring-shaped valve body 22. Since the valve shaft 24 is formed so as to retreat from the valve port 23 of the ring-shaped valve body 22 to the inside of the lower container 13 to open the sealed space, the valve shaft 24 is formed into the valve of the ring-shaped valve body 22. The valve device 21 can be opened by a simple operation of simply retracting it from the opening 23 into the lower container 13. Therefore, for example, it is possible to cope with the recent robotization using a manipulator or the like, and it is possible to automatically open and close the enclosed space with a simple structure without increasing the size of the device.

Specifically, the support plate 47 for supplying / discharging the pressure fluid to / from the third cylinder device 53 of the relay unit 33 and closing the opening of the rod guide 39 is provided along the unit supporting rod 51. And guides the rod guide 39 from the inside of the unit main body 36 toward the valve device 21 provided in the closed container 11. Then, the seal packing 38 provided on the flat surface portion 35a of the communication nozzle 35 attached to the rod guide 39 is brought into airtight contact with the flat surface portion 22e of the ring-shaped valve body 22. In this state, the pressurized fluid is supplied to and discharged from the cylinder chamber 43b of the second cylinder device 43, the rod 42 is advanced from the rod guide 39 of the advancing / retreating rod device 34, and the pressing portion 42a of the rod 42 is moved to the valve device. The valve shaft 24 of 21 is brought into contact with the knob portion 24c, the rod 42 is advanced as it is, and the pressing portion 42a pushes the valve shaft 24 to automatically open the valve opening 23 of the ring-shaped valve body 22. This is what you do. At this time, the compression coil spring 31 provided between the tapered protrusion 24d of the valve shaft 24 and the spring receiver 30 in the ring-shaped valve body 22 is in a compressed state. Further, since the valve opening 23 is opened, a large number of holes are formed in the spring receiver 30, so that the inside of the closed container 11 communicates with the inside of the relay unit 33.

As described above, in the present embodiment, the valve opening 23 of the valve device 21 is opened by a simple operation of only retracting the knob portion 24c of the valve shaft 24 by the advancing / retreating rod device 34 of the relay unit 33 or the like. Therefore, the work such as purging of the closed container 11 can be performed automatically and extremely easily.

[0027]

[Effect of the device]

 As described above, according to the closed container of the present invention, it is possible to cope with automation of opening / closing operation of a closed space with a valve device having a simple structure without increasing the size of the device, which is an excellent effect. To do.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a closed container according to the present invention.

FIG. 2 is a side sectional view showing a valve device used in the closed container according to the present invention.

FIG. 3 is a partially cutaway side view showing a relay unit for opening a valve device used in the closed container according to the present invention.

FIG. 4 is a schematic view showing a conventional closed container.

[Explanation of symbols]

 10 ... Base, 11 ... Airtight container, W ... Work, 12 ... Upper container, 13 ... Lower container, 12a, 13a ... Open end, 14 ... Seal Packing, 15 ... Moving means, 16 ... Cylinder device, 18 ... Pressure pump, 19 ... Switching valve, 20 ... Fluid storage tank, 21 ... Valve device, 22 ... Ring Valve body, 22a ··· boss portion of ring valve body, 22b · · overhang portion of ring valve body, 22c · · taper portion of ring valve body, 22d · · reduced diameter portion of ring valve body, 22e ... Plane part of the ring-shaped valve body, 23 ... Valve mouth, 24 ... Valve shaft, 24a ... Valve shaft head, 24b ... Valve shaft shaft part, 24c ... Valve shaft knob 24d ... Tapered protrusion of valve shaft, 27, 28 ... Seal packing, 29 ... Receiver, 30 ... Spring receiver, 31 ... Compression coil spring, 33 ... Relay unit, 34 ... Forward / backward rod device, 35 ... Communication nozzle, 36 ... Unit body, 37 ... Supply Exhaust nozzle, 38, 40, 41 ... Seal packing, 39 ... Rod guide, 42 ... Rod, 43 ... Second cylinder device, 43a ... Piston, 43b ... Cylinder chamber, 44 ... ..Bearings, 45, 46, 48 ... Seal packing, 47 ... Support plate, 49 ... Bolt, 50 ... Through hole, 51 ... Unit support rod, 52 ... Frame, 53 ... 3rd cylinder apparatus, 54 ... Piston rod, 55 ... Intermediate block.

Claims (2)

[Scope of utility model registration request] 1. An opening end of two bottomed cylinders is connected to each other via a seal packing to define a sealed space, and at least one of the bottomed cylinders has a valve opening of a ring-shaped valve body. The valve shaft is biased from the inside to close the closed space, and the valve shaft is retracted from the valve opening of the ring-shaped valve body into the bottomed cylindrical body to open the closed space. An airtight container provided with a valve device. 2. At least one of the bottomed cylinders is provided with a moving means for moving the bottomed cylinders to divide or integrate the two bottomed cylinders. The closed container according to 1.