WO2005094974A1

WO2005094974A1 - Device and method for uninterruptible power supply

Info

Publication number: WO2005094974A1
Application number: PCT/JP2005/006272
Authority: WO
Inventors: Toshiro Tomishige; Hirofumi Higuchi; Yukio Nishino; Masakazu Kondo; Etsuo Sugimoto; Tadafumi Yamamura; Kinichi Shibata
Original assignee: Japan Alcohol Corporation; Mitsui Engineering & Shipbuilding Co., Ltd; Wave Engineering Corporation
Priority date: 2004-03-31
Filing date: 2005-03-31
Publication date: 2005-10-13
Also published as: JP2005313156A; JP4897233B2

Abstract

[PROBLEMS] To provide a device for uninterruptible power supply for closing both ends of the cylinder a permeable component separating cylindrical member for separably permeating, through the wall of the cylinder, specific components in a mixture on the outside of the cylinder by bringing the inside of the cylinder into a negative pressure. [MEANS FOR SOLVING PROBLEMS] This device for uninterruptible power supply comprises sealing devices fitted to both ends of the cylinder and sealing the ends of the cylinder. The sealing devices further comprise cylinder end fixed members fixed to the ends of the cylinder, threaded members axially threaded to the cylinder end fixed members, annular storage parts formed between the cylinder end fixed members and the threaded members and the inner or outer peripheral surfaces of the cylinder on the cylindrical end side, a plurality of annular seal members fitted to the annular storage parts, and an annular interposed member interposed between the annular seal members and slidable in the axial direction of the cylinder. The annular seal members are elastically deformed with a holding pressure according to the threading of the threading members into the cylinder end fixed members, and multiple stages of seal parts corresponding to the number of the annular seal members are formed along the axial direction of the cylinder.

Description

Vacuum maintenance device and its vacuum maintenance method

Technical field

The present invention relates to a vacuum maintenance device and a vacuum maintenance method for closing both cylindrical ends of a permeable component separating cylindrical member having a zeolite film formed on the outer peripheral surface of the cylinder and a method for maintaining the vacuum, wherein the cylinder is configured to maintain a negative pressure inside the cylinder. In separating required components in an external mixed substance through a cylinder wall, the present invention relates to sealing at both ends of the cylinder.

Background art

[0002] As a main use form in the chemical industry, a permeable component separation tubular member carrying a zeolite membrane (hereinafter, also referred to as a tubular member!) Has been introduced, focusing on its separation performance. When a mixed substance is used as a raw material, one or more of the components penetrate the cylinder (cylinder wall), and the product-rich component (target component) and the non-product component (non-target component) Can be separated into components containing a large amount of.

As such examples, attention has been focused on the dehydration process of ethanol in the ethanol distillation industry and the dehydration and regeneration process of IPA (isopropyl alcohol) -based substances used for cleaning lenses and semiconductors.

[0003] When the cylindrical body is used in the dehydration step, the outer peripheral surface of the cylindrical body, which is appropriately connected to and detachable from the vacuum generating means, moves from the outer peripheral surface to the hollow portion (inside of the cylinder) of the vacuumed cylinder due to an internal / external pressure difference. By using the driving force to permeate a substance containing water as a main component (non-target component) of the water-containing mixed substance into the hollow portion, the water-containing mixed substance can be dehydrated.

In this case, in a sealing device for closing both ends of the cylindrical body, a conventional resin, glass, or the like is used as a sealing material.

Disclosure of the invention

Problems to be solved by the invention

[0004] Conventionally used resin glass or the like as a sealing material is less resistant to heat and solvents and has a certain level of durability. However, it has little or no elasticity. Less adverse effect due to elution of adhesive component used for bonding sealing material to cylinder, compared to sealing work The long period of time required and the need to acquire Z or a certain level of technical skill, etc., had been a major obstacle to the operation of the entire equipment including the cylinder.

[0005] When resin, glass, or the like is used as the sealing material, the sealing material usually does not have elasticity! Therefore, the sealing material does not have a vibration absorbing function, and is not stationary in a process including a cylinder as an element of the device. In the normal state (operating start force of the normal equipment and unstable state for a certain period until reaching the steady state), the impact of the so-called water hammer rarely causes damage or deformation of the cylinder and its sealing material. Power.

[0006] In addition, since it has been recognized that the skeleton structure of zeolite is deformed at around 600 ° C, and the inherent substance separation ability is remarkably lost, zeolite is used at 600 ° C when glass is used as a sealing material. In the following, it is necessary to soften and seal the glass, and in this case, at present, it is inevitable to use glass containing oxidized lead, and the glass is sealed with a sealing material containing such lead oxide. In processes involving cylinders, there were concerns about the adverse effects on the human body due to the elution of lead components into products used orally, and also on the environment when using non-oral products.

[0007] On the other hand, when the separation function of the cylinder is lost before the sealing function of the sealing material (for example, when a fine suspended substance is contained in a mixed substance existing outside, or when the suspended substance is contained in pores of the cylinder). If the cylinder is damaged due to the impact of a water hammer, or if the glass is used as a sealing material, after separating the cylinder, sealing material, and sealing device, Since it is difficult to reuse the sealing device, it is necessary to replace the cylinder, the sealing material, and the sealing device as a set.As a result, the cylinder and the sealing device having a sufficient function are also replaced. Costly waste.

[0008] In such a situation, in addition to having long-term durability and having a certain vibration absorbing function, concerns about elution of harmful substances due to sealing materials into products can be eliminated. An important issue is to provide a device that does not require replacement of a sealing member or the like for closing both ends of the cylindrical body as a set, that is, a vacuum maintenance device for sealing both ends of the cylindrical body.

[0009] In particular, the control temperature for the dehydration separation process of a mixed substance containing a lower alcohol such as ethanol or IPA (isopropyl alcohol) as a feedstock (around 120 ° C, lower temperature than other polymer feedstocks) Considering the heat resistance at the control temperature, it is not necessary to use grease or glass as a sealing material. It is desired to solve the above-mentioned problems caused by the use of surgical glass and the like, and to develop a vacuum maintenance device and a vacuum maintenance method having long-term durability, which is the most important requirement for a sealing material. .

Means for solving the problem

[0010] The present invention has been made for the purpose of solving the above problems.

That is, the invention of claim 1 is a vacuum maintenance device that closes both cylinder ends of a permeable component separating cylindrical member that separates required components in a mixed substance outside the cylinder by passing the cylinder wall with a negative pressure inside the cylinder. In the above, the vacuum maintaining device includes a sealing device attached to both ends of the cylinder to seal the ends of the cylinder,

The sealing device includes a cylinder end fixing member fixed to the cylinder end, a screw member screwed to the cylinder end fixing member in the cylinder axis direction, and the cylinder end fixing member and the screw member in the cylinder on the cylinder end side. A return housing formed between the peripheral surface or the outer peripheral surface of the cylinder, a plurality of return seals fitted to the return housing, and a cylinder axial direction interposed between the return seals. With a slidable return interposition member,

The return seal member is elastically deformed by a pinching pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and a plurality of seal portions corresponding to the number of the return seal members are provided in the cylinder axis direction. It is characterized by having.

[0011] Further, the invention according to claim 2 closes both ends of a permeable component separating tubular member that separates required components in a mixed substance outside the cylinder by passing the cylindrical wall with a negative pressure inside the cylinder. In the vacuum maintenance device, the vacuum maintenance device includes a hermetic seal which is attached to both ends of the cylinder and seals the end of the cylinder. The seal includes a cylinder end fixing member fixed to the end of the cylinder and the end of the cylinder. A screw member that is screwed to the fixing member in the cylinder axis direction; a return storage portion formed between the cylinder end fixing member and the screw member and the inner peripheral surface or the outer peripheral surface of the cylinder on the cylinder end side; A single return seal member fitted to the return storage section;

The seal is provided by elastically deforming the return seal member with a squeezing pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and at least an impervious treatment is performed on the inner peripheral surface of the cylinder contacting at least the annular seal member. It is characterized by having given.

[0012] The invention of claim 3 is the vacuum maintenance device according to claim 1 or claim 2, Both or at least one of the seals attached to the end of the cylinder is fixed to the container wall surface of the mixed substance so as to be freely detachable, and penetrates through the seal member fixed to the container wall surface to pass out of the container. An outflow passage for taking out the water is formed.

[0013] In a fourth aspect of the present invention, in the vacuum maintenance device according to any one of the first to third aspects, a through screw hole is formed in the cylinder end fixing member in the cylinder axis direction, and the screw is formed. The mating member has a single return seal member or a plurality of mating members extending in the direction of the cylinder end on the outer peripheral surface inside the cylinder of the screwing member screwed into the through screw hole from the inside of the cylinder toward the outside of the cylinder end. A stepped portion having a stepped surface for pressing the annular seal member force of the annular seal member is formed, and a low peripheral surface of the stepped portion is formed so as to be able to be fitted into the through screw hole. A concave recessed storage portion is provided in which the open side of the concave portion is directed toward the inner circumferential surface of the cylinder between the surface and the inner end surface of the cylindrical end fixing member facing the step surface.

[0014] Further, the invention of claim 5 is the vacuum maintenance device according to claim 4, wherein a single return seal member or a plurality of return seal members and Ring-shaped interposition member An annular seal member group that also provides a force is provided.

[0015] Further, according to the invention of claim 6, in the vacuum maintenance device according to any one of claims 1 to 5, the cylinder end side end face of the screwing member is provided with a cylinder end outer cover. It is characterized in that an engaging means is provided for engaging a turning means for turning the screwing member.

[0016] The invention of claim 7 is characterized in that, in the vacuum maintenance device according to claim 6, the engagement means is configured to be detachable from the insertion-side tip of the turning means.

[0017] The invention of claim 8 is the vacuum maintenance device according to any one of claims 2 to 7, wherein the inner peripheral surface of the cylinder from the cylinder end to the contact of the single return seal member. In addition, it is characterized by being subjected to opacity treatment.

[0018] Further, the invention of claim 9 is the vacuum maintenance device according to any one of claims 2 to 7, wherein a single return seal member is continuously provided on the cylinder end face and the cylinder end face. It is characterized in that the inner peripheral surface of the cylinder up to the contact is subjected to opacity treatment.

[0019] Further, the invention of claim 10 is the vacuum maintenance device according to any one of claims 2 to 7, wherein a cylinder end force corresponds to a single return seal member on the outer peripheral surface of the cylinder. It is characterized by a opaque treatment. [0020] Further, the invention of claim 11 is the vacuum maintenance device according to any one of claims 2 to 7, wherein the vacuum maintenance device corresponds to a single return seal member that is continuous with the cylinder end face. It is characterized in that an opaque treatment is applied to the outer peripheral surface of the cylinder.

According to a twelfth aspect of the present invention, in the vacuum maintenance device according to any one of the first, third, and seventh aspects, at least a plurality of stages are provided from the end of the cylinder toward the back of the cylinder. An impermeability treatment is applied to the inner circumferential surface of the cylinder until the return seal member comes into contact with the seal.

[0022] Further, the invention of claim 13 is the vacuum maintenance device according to any one of claims 1, 3 to 7, wherein at least a plurality of stages are provided continuously with the cylinder end face and the cylinder end face. An impermeability treatment is applied to the inner circumferential surface of the cylinder until the return seal member provided toward the inner side of the cylinder comes into contact.

According to a fourteenth aspect of the present invention, in the vacuum maintenance device according to any one of the first to third aspects, the return seal member provided at the innermost end of the cylinder is in contact with the vacuum maintenance device. The inner peripheral surface of the cylinder is subjected to opacity treatment.

[0024] Further, the invention of claim 15 is the vacuum maintenance device according to any one of claims 1, 3 to 7, wherein the vacuum maintenance device is provided at the innermost end continuously to the cylinder end face and the cylinder end face. The inner peripheral surface of the cylinder up to the contact of the return seal member is subjected to an impermeability treatment.

[0025] Further, the invention of claim 16 is the vacuum maintenance device according to any of claims 12 to 15, wherein at least the most returnable seal provided in the cylinder from the cylinder end. It is characterized in that an opaque treatment is applied to the outer peripheral surface of the cylinder until it corresponds to the member.

According to a seventeenth aspect of the present invention, there is provided the vacuum maintenance device according to any one of the twelfth to fifteenth aspects, wherein at least the most end of the cylinder end provided in the cylinder is provided continuously with the cylinder end face. The outer peripheral surface of the cylinder up to the portion corresponding to the seal member is subjected to an impermeability treatment.

[0027] The invention of claim 18 is the vacuum maintenance device according to any one of claims 12 to 15, wherein the vacuum maintenance device corresponds to the innermost return seal member provided inside the cylinder from the cylinder end. The outer peripheral surface of the cylinder is subjected to an impermeability treatment before the operation.

[0028] Further, the invention of claim 19 is the vacuum maintenance device according to any of claims 12 to 15, wherein the innermost return seal member provided in the cylinder is provided continuously with the cylinder end face. It is characterized in that an opaque treatment has been applied to the outer peripheral surface of the cylinder until it corresponds to. [0029] The invention of claim 20 is the vacuum maintenance device according to any one of claims 2 to 19, wherein the opaque treatment is a glaze sealing treatment.

[0030] Further, the invention of claim 21 is the vacuum maintenance device according to claim 20, wherein the glaze sealing treatment is performed by applying a mixed slurry of glaze and water to a required portion of the cylindrical body, and then melting at a predetermined temperature. It is characterized by processing.

[0031] Further, the invention of claim 22 is the vacuum maintenance device according to claim 20 or claim 21, wherein the glaze comprises an alkaline medium solvent, a silicic acid for suppressing over-dissolution, and an adhesion to the substrate. It is characterized by containing kaolin to be enhanced.

[0032] Further, the invention of claim 23 is the vacuum maintenance device according to any one of claims 1 to 3, wherein the cylinder end fixing member covers the cylinder outer peripheral surface on the cylinder end side. And a crown-shaped portion that covers the end of the cylinder continuously with the part, a through-hole in which the end of the cylinder fits is formed in the screwing member, and the center of the cylinder is inserted through the through-hole. A threaded member fitted on the side is screwed with the inner peripheral surface of the outer peripheral covering portion of the cylinder, and is formed in a return-shaped gap between the outer peripheral covering portion of the cylinder and the outer peripheral surface of the cylinder so as to be able to advance and retreat. In the present invention, a return-shaped storage section having a concave cross-section in which the open side of the concave portion is directed toward the outer peripheral surface of the cylinder is provided between the outer peripheral cover of the member, the crown portion, and the entry end face of the screwing member.

[0033] In the invention of claim 24, in the vacuum maintenance device according to claim 23, an annular seal member group comprising a return seal member and a return intermediate member is provided on the outer peripheral surface of the cylinder of the return housing portion. It is characterized by

[0034] Further, the invention of claim 25 is the vacuum maintenance device according to claim 23 or claim 24.

On the outer peripheral surface of the end portion of the screw member on the center side of the tube, an external force is provided with an engagement means with which a turning means for screwing the screw member is engaged.

[0035] The invention of claim 26 is the vacuum maintenance device of claim 25, wherein the engaging means is a nut shape with which at least a part of the turning means is engaged.

[0036] The invention of claim 27 is the vacuum maintenance device according to any one of claims 1 to 26, wherein the permeable component separation tubular member is formed of a porous material. Features.

[0037] The invention of claim 28 is the vacuum maintenance device according to any one of claims 1 to 27, wherein the permeable component separation tubular member has a zeolite film formed on the outer peripheral surface of the tube. Features And

[0038] Further, the invention of claim 29 is the vacuum maintenance device according to any one of claims 1, 3 to 7, and 12 to 28, wherein the return seal member is provided. And the intervening member are arranged alternately so that the annular seal members are located at least at both ends.

[0039] Further, the invention of claim 30 is the vacuum maintenance device according to any one of claims 1 to 29, wherein the annular seal member is an O-ring or other deformed restoration formed. It is a flexible elastic member.

[0040] Further, the invention of claim 31 is a vacuum maintenance device according to any one of claims 1, 3 to 7, 12 to 30, and a return interposition member. Is a metal member or other hard member which is hardly deformed.

[0041] Further, the invention of claim 32 closes both cylinder ends of a permeable component separating tubular member that separates required components in a mixed substance outside the cylinder by passing the cylinder wall by setting the inside of the cylinder to a negative pressure. In the vacuum maintaining method of the vacuum maintaining device, the vacuum maintaining device includes a sealing member attached to each of the two cylinder ends to seal the cylinder ends, and the sealing member is fixed to the cylinder end. A screw member which is screwed to the member and the cylinder end fixing member in the cylinder axis direction, and is formed between the cylinder end fixing member and the screw member and the inner peripheral surface or the outer peripheral surface of the cylinder on the cylinder end side. A return letter storage part, a plurality of return letter seal members fitted to the return letter storage part, and a return letter intervening member interposed between the return letter seal members and slidable in the cylinder axis direction. ,

The return seal member is elastically deformed by a pinching pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and a plurality of seal portions corresponding to the number of the return seal members are provided in the cylinder axis direction. hand,

Even if one or several stages of the seals fail, the seal function is maintained by the remaining at least one stage of seals, or the sealing function is further enhanced by the remaining at least one stage of seals. It is characterized by being maintained.

[0042] Further, the invention of claim 33 closes both cylinder ends of a permeable component separating cylindrical member that separates required components in a mixed substance outside the cylinder by passing the cylinder wall by setting the inside of the cylinder to a negative pressure. In the vacuum maintaining method of the vacuum maintaining device, the vacuum maintaining device is attached to each of the two cylinder ends. A sealing member that seals the cylinder end; the sealing member includes a cylinder end fixing member fixed to the cylinder end, a screwing member screwed to the cylinder end fixing member in the cylinder axis direction, and the cylinder end fixing member; A return housing formed between the member and the screw member and the inner circumferential surface or the outer circumferential surface of the tube at the end of the tube, and a single return seal fitted to the return housing. With

The seal is provided by elastically deforming the return seal member with a squeezing pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and at least an impervious treatment is performed on the inner peripheral surface of the cylinder contacting at least the annular seal member. The seal function is maintained by a single-stage seal portion.

The invention's effect

[0043] According to the first and third aspects of the invention, the use of an elastic return seal member improves the vibration absorption function as compared with the conventional vacuum maintaining means. The possibility of breakage or deformation of the joint between the cylinder and the seal and the return seal member as a sealant due to the impact of the data hammer can be extremely reduced, and it is necessary to replace the cylinder and the seal as a set Taking into account the durability that can be improved, for example, it is possible to renew each cylinder or return seal member, and as a result, waste of cost and labor can be largely reduced.

[0044] Further, a return seal member having optimal heat and chemical resistance to the mixed substance can be selectively adopted as the seal member, and the vacuum maintenance device excluding the existing cylindrical body and the return seal member. Can be used as it is.

[0045] Further, since there is no need to use a conventionally used adhesive, concerns about elution of harmful substances due to the adhesive into the product can be eliminated.

[0046] According to the first, third to seventh and twelfth to thirty-second aspects of the invention, any one of the two ends of the cylindrical body (permeable component separating cylindrical member) Since two or more return seal members are arranged in the cylinder axis direction! / !, secondary force that is difficult to directly contact from the primary return seal member that directly contacts the mixed substance The next return seal member comes into contact with the next return seal member due to failure of the seal function due to corrosion of the previous and next return seal members until the next return seal member reaches the next return seal member. Seal member has a knock-up function of the next return seal member, and its structural durability maintains extremely long-term durability. Can be held.

[0047] Further, since a plurality of return seal members can be individually compressed by simple "screw tightening" of an external force, the return gap between the cylindrical peripheral surface and the sealing member is properly sealed. For this purpose, confirm the vacuum maintenance state by the torque (rotational force) of “screw tightening” and determine the torque with sealing durability (hereinafter referred to as “determined torque”). If the "torque tightening" of the determined torque is carried out, proper sealing can be performed easily and quickly as compared with the conventional method.

[0048] According to the inventions of claim 2, claim 5 to claim 11, and claim 33,

By performing impermeability treatment on the inner peripheral surface of the cylinder in contact with the annular seal member, even in the case of a single-stage seal portion using a single annular seal member, similar to the case of multiple stages, compared with the conventional case, It has long-term durability, has a certain vibration absorption function, and can eliminate concerns about elution of harmful substances caused by sealing materials into products.Furthermore, a cylindrical body and a sealing device for closing both ends of the cylindrical body It is possible to provide a vacuum maintenance device that does not need to be replaced as a set. BEST MODE FOR CARRYING OUT THE INVENTION

[0049] Hereinafter, the present invention will be described by way of an example in which the present invention is applied to the dehydration of aqueous ethanol in the ethanol distillation industry.

The aqueous ethanol is a mixture containing ethanol and water as essential components, and other optional components such as methyl alcohol, propyl alcohol, butyl alcohol, and acetoaldehyde.

[0050] The following are five examples.

Embodiment 1 Embodiment 2 is an inner sealing system in which two O-rings are disposed on the inner peripheral surface side of a cylindrical body (permeable component separating cylindrical member) as a return seal member, that is, a plug-type vacuum maintenance device. Example 3 is an inner sealing method using three O-rings, that is, a plug-type vacuum maintaining device, and Example 3 is an outer sealing method in which two O-rings are disposed on the outer peripheral surface side of a cylindrical body, that is, a lid-type vacuum maintaining device. Example 4 is an outer sealing method using three O-rings, that is, a lid-type vacuum maintenance device. Embodiment 5 is directed to the present invention by performing an impermeability treatment for preventing transmission of a permeable component on a required portion of a cylindrical end surface, a cylindrical inner peripheral surface, and a cylindrical outer peripheral surface of a cylindrical body not provided with a zeolite membrane. This is an example in which the effectiveness of the vacuum maintenance device is enhanced. Example 1

Hereinafter, the inside-sealing-type (plug-type) vacuum maintenance device of Example 1 in which two O-rings are provided on the inner peripheral surface side of the cylindrical body as return seal members will be described with reference to FIGS. 1 to 4. It will be described based on. Fig. 1 is a vertical side view of a vacuum maintenance device mounted on a cylinder, Fig. 2 is a vertical side view of the vacuum maintenance device in an exploded state, Fig. 3 is a vertical side view of one of the seals constituting the vacuum maintenance device, FIG. 4 is a vertical sectional side view of the other sealing device constituting the vacuum maintenance device.

[0052] The vacuum maintenance device of Example 1 has a configuration in which a through-hole in the cylinder axis direction is provided in a cylinder end fixing member, which is one of the sealing devices of the vacuum maintenance device, and is screwed, which is the other of the sealing devices. A return seal member which is screwed into the through screw hole from the inside of the tube to the outside of the tube end of the member and has a plurality of annular sealing members on the outer peripheral surface inside the tube of the screw member toward the tube end. The group is provided with a step having a step surface, and a low peripheral surface of the step is formed so as to be able to fit into the through screw hole, and the step surface, the low peripheral surface and the step surface are relatively opposed to each other. In this configuration, a return-shaped storage section having a concave cross-section with the open side of the recess facing the inner circumferential surface side of the cylinder is provided between the inner end surface of the cylindrical member and the fixing member. Hereinafter, this will be described in detail.

In FIG. 1, reference numeral 1 denotes a permeable component separating tubular member (tubular body), 2 denotes a container wall surface of the mixed substance, 3 denotes vacuum generating means installed outside the container, and 10 denotes a vacuum maintaining device. It is. When a negative pressure is applied to the inside 4 of the hollow cylinder by the vacuum generating means 3, a desired component in a mixed substance (not shown) outside the cylinder, that is, a target component, is transmitted through the cylinder wall. It has a function to separate. As such a cylindrical body 1, for example, a porous material having a zeolite film applied to the outer peripheral surface of the cylindrical body is used. The cylinder provided with the zeolite film will be described later.

[0054] The vacuum maintaining device 10 is provided with a pair of seals 20, 30 for sealing both ends of the cylinder in order to maintain the vacuum inside the cylinder 4, and these seals 20, 30 are respectively provided at both ends of the cylinder. It is detachably mounted.

In the first embodiment, as shown in the drawing, one of the seals 20, 30 attached to both ends of the cylinder is fixed to the container wall surface 2 of the mixed substance in a detachable manner, and An outflow passage 5 is formed through the sealing device 20 fixed to the wall surface 2 and out of the container to take out the target component permeated into the inside 4 of the cylinder to the outside of the container.

[0055] The materials of the seals 20, 30 and a metal ring 41a described later have chemical resistance and heat resistance. Taking into account, stainless steel is preferred.

Although not shown, both of the sealing members 20 and 30 may be fixed to the wall surface of the container, respectively, to form the same outflow path for each. In this case, the seal indicated by reference numeral 30 in FIG.

The sealing tools 20 and 30 shown in the first embodiment are screwed in the cylinder axis direction with the cylinder end fixing members 21 and 31 fixed to the cylinder end, respectively. Screw members 22 and 32 are provided. The screw members 22 and 32 extend from the inside of the cylinder to the outside of the cylinder end with respect to the through-holes formed in the cylinder end fixing members 21 and 31 in the cylinder axis direction. It is screwed back and forth freely.

In addition, a screwdriver (not shown), for example, a screwdriver (not shown) is detachably attached to the end surface of the screw member 22, 23 on the cylinder end side as a turning means capable of turning the screw member 22, 32 from the outside of the cylinder end. Engaging means 23, 33 for engaging are provided.

The engaging means 23, 33 are not limited to the concave parts as shown in the figure unless they are uniform with a flathead screwdriver, and may be convex parts. If it is a configuration with complementary shape to engage,

[0057] Heads 24, 34 as large diameter portions corresponding to the inner diameter of the cylinder 1 are formed on the screwing members 22, 32 at the rear end side in the screwing direction. A low-peripheral surface 25, 35 as a small-diameter portion formed with a step (hereinafter, also referred to as a step portion) at the front end side in the insertion direction is formed so as to be able to fit into the through screw holes of the cylinder end fixing members 21, 31. .

In this way, the stepped surfaces 26 and 36 of the stepped portion, the low peripheral surfaces 25 and 35, and the tube inner end surfaces 28 and 38 of the tube end fixing members 21 and 31 opposed to the stepped surfaces 26 and 36 form the screwing member 22, 32, in other words, between the cylinder end fixing members 21 and 31 and the screwing members 22 and 32 and the cylinder inner peripheral surface on the cylinder end side, the concave portion having a concave cross section (the bottom of the concave portion has a low peripheral portion). Return-shaped storage portions 29 and 39 are provided with the open sides of the surfaces 25 and 35) facing the inner circumferential surface side of the cylinder.

[0058] The return-shaped storage portions 29, 39 have two O-rings (40a, 40b) as return-shaped seal members 40 having elasticity, and a return-type seal interposed between the two O-rings 40a, 40b. A metal ring 41a as the intervening member 41 is fitted to the low peripheral surfaces 25 and 35, and at least the metal ring 41 is fitted so as to be easily slidable in the cylinder axis direction.

Therefore, the cylinder is pressed by the pinching pressure corresponding to the screwing of the screwing members 22 and 32 into the cylinder end fixing members 21 and 31. Toward the end direction, a plurality of annular seal members 40 (O-rings 40a, 40b) having an annular intervening member 41 interposed between the annular seal members 40 are pushed in both directions in the axial direction of the cylinder. Of the return seal member 40 (40a, 40b) can be elastically deformed, and a plurality of seal portions corresponding to the number of the O-rings 40a, 40b as the return seal member 40 in the axial direction of the cylinder. Can be provided.

That is, when the screw members 22 and 32 are screwed into the cylinder end fixing members 21 and 31, the two O-rings 40 a and 40 b and the metal ring 41 a interposed between the two O-rings 40 a and 40 b are formed. Sliding in the cylinder axis direction, the two O-rings 40a and 40b extend to form a return gap between the cylinder inner peripheral surface and the outer peripheral surfaces of the screw members 22 and 32 (specifically, the lower peripheral surface). The cylinder center side force is also directed to the left and right cylinder end sides, and the two parts are sequentially sealed (vacuum maintenance function).

[0060] This vacuum maintaining function is performed by transmitting any one or more components of water-containing ethanol as a mixed substance existing outside the cylinder 1 from outside to inside the cylinder 1. The following is an example of a case where the process of continuously performing the step of performing the process is maintained.

First, at the beginning of this process, the O-rings 40a, 40a (hereinafter, also referred to as primary O-rings or primary return-shaped sealing members) located at the center of the cylinder first come into contact with the hydrous alcohol.

If the primary O-rings 40a, 40a are corroded, for example, and become defective in the sealing function in the course of this process at one or both ends of the cylinder 1, the remaining one, that is, the O-ring 40b on the cylinder end side , 40b (hereinafter also referred to as secondary O-ring) comes into contact with and seals the hydrous ethanol, and subsequently maintains the vacuum state in this process.

In this way, the secondary O-rings 40b, 40b perform the so-called backup function of the primary O-rings 40a, 40a, and as a result, can be maintained for a long time without interrupting the vacuum state in this process. .

[0062] The compression sealing of the O-rings 40a, 40b depends on the movement of the screw members 22, 32 due to the combination of the tube end fixing members 21, 31 and the screw members 22, 32, which are movable members, that is, the amount of screwing. It can be adjusted by adjusting the axial length of the return groove storage sections 29 and 39 according to the adjustment.

Specifically, a flathead screwdriver (not shown) as a turning means is inserted into the engaging portions 23, 33 of the screw members 22, 32, and the fitting storage portions 29, 39 are formed by the principle of "screw tightening". Axial length By narrowing the interval width, the left and right O-rings (40a, 40b and 40a, 40b) are compressed and deformed with the metal ring 41a inside.

Therefore, in order to properly seal the return gap between the inner circumferential surface of the cylinder and the (lower circumferential surface of) the screwing member, the vacuum maintenance state by the torque (rotational force) of “screw tightening” is checked in advance. Then, if the torque with sealing durability is determined (hereinafter referred to as “determined torque”), appropriate torque can be easily and quickly sealed by tightening the determined torque. Become.

Example 2

Next, the inside-sealing-type (plug-type) vacuum maintenance device according to the second embodiment, in which three O-rings are provided on the inner peripheral surface side of the cylinder as return seal members, is shown in FIGS. Explanation will be made based on 8. FIG. 5 is a vertical side view of the vacuum maintenance device mounted on the cylinder, FIG. 6 is a vertical side view of the vacuum maintenance device in an exploded state, FIG. 7 is a vertical side view of one of the seals constituting the vacuum maintenance device, FIG. 8 is a vertical sectional side view of the other sealing device constituting the vacuum maintenance device.

In the drawings, the same reference numerals as those used in the first embodiment and FIGS. 1 to 4 have substantially the same contents, and thus description thereof will be omitted.

The configuration of the second embodiment is different from the first embodiment in that the axial length of the return-shaped storage portions 29 and 39 in the first embodiment is increased, and two O-rings, ie, primary O-rings, are provided in the return-shaped storage portions 29 and 39. 40a, a secondary O-ring 40b, and a tertiary O-ring 40c disposed via a metal ring 41b. Other configurations and operations are substantially the same as those of the first embodiment.

That is, in the process described in the first embodiment, also in the second embodiment, the primary O-rings 40a and 40a located at the center of the cylinder first come into contact with the hydroalcoholic, and the first cylinder 1 If the primary O-rings 40a, 40a are corroded, for example, due to the seal failure due to the course of this process, at one or both ends of the both ends, the secondary O-rings 40b, 40b located next contact the aqueous ethanol. The secondary O-rings 40b, 40b are corroded and fail to seal, and the last tertiary O-rings 40c, 40c are wetted. It comes in contact with ethanol, seals it, and continues to maintain the vacuum state in this process.

As described above, the secondary O-rings 40b, 40b sequentially perform the so-called backup function of the primary O-rings 40a, 40a, and the tertiary rings 40c, 40c perform the secondary O-rings 40b, 40b. As a result, the vacuum state in this process can be maintained for a longer period of time without interruption as compared with the first embodiment.

[0068] According to the plug-type vacuum maintenance device of the inside sealing type of the first and second embodiments according to the present invention, the return-length storage portions 29 and 39 are formed so that the axial length interval width is further increased. The vacuum state of this process is interrupted for a longer period by using a structure in which four or more O-rings are alternately arranged via metal rings (41a and 41b) in the return letter storage sections 29 and 39. It can be maintained without any problems.

Example 3

Next, an outer sealing type (lid type) vacuum maintenance device in which two O-rings are provided as return seal members on the outer peripheral surface side of the cylindrical body according to the third embodiment is shown in FIGS. 9 to 12. It will be described based on the following. Fig. 9 is a vertical side view of the vacuum maintenance device mounted on the cylinder, Fig. 10 is a vertical side view of the vacuum maintenance device in an exploded state, and Fig. 11 is a vertical side view of one of the seals constituting the vacuum maintenance device. FIG. 12 is a vertical sectional side view of the other sealing device constituting the vacuum maintenance device.

[0070] In the vacuum maintenance device of the third embodiment, a cylinder end fixing member, which is one of the seals constituting the vacuum maintenance device, is provided with a cylindrical outer peripheral covering portion that covers the outer peripheral surface of the cylindrical end and a cylindrical outer peripheral covering portion. And a crown-shaped portion that covers the cylinder end side in a continuous manner, and the cylinder end is fitted into a through-hole provided in a screwing member that is the other sealing member. The screwing member inserted at the center is covered with the outer periphery of the cylinder! While screwing with the inner peripheral surface of the ヽ part, the outer peripheral cover of the cylinder is covered! In addition to allowing the screw to freely advance and retreat into the return gap between the ヽ portion and the outer peripheral surface of the cylinder, the open side of the concave portion is formed between the outer peripheral covering portion and the crown portion of the cylindrical end fixing member and the entry side end surface of the screwing member. It has a configuration in which a return-shaped storage section having a concave cross section facing the outer peripheral surface side of the cylinder is provided. Hereinafter, this will be described in detail.

Note that the same reference numerals as those used in the first and second embodiments and FIGS. 1 to 8 have substantially the same contents, and a description thereof will be omitted.

In FIG. 9, the vacuum maintaining device 100 includes a pair of seals 200 and 300 that seal both ends of the cylinder in order to maintain a vacuum inside the cylinder 4. Each is detachably attached to the end.

In the second embodiment, as shown in FIG. One of the seals 200 is detachably fixed to the container wall 2 of the mixed substance, and penetrates through the seal 200 fixed to the container wall 2 to the outside of the container to pass through the permeated component, that is, the cylindrical wall. An outflow channel 5 for extracting the target component is formed.

However, similarly to Embodiments 1 and 2, the present invention is not limited to this, and although not shown, both sealing tools 200 and 300 are fixed to the container wall 2 respectively, and a similar outflow path (not shown) To each of them.

[0072] Sealing tools 200 and 300 shown in Embodiment 3 are cylinder end fixing members 210 and 310 fixed to both cylinder ends, and screw engagement with the cylinder end fixing members 210 and 310 in the cylinder axis direction. The members 220 and 320 are provided in the same manner as in the first and second embodiments, but in a specific configuration, in the cylinder end fixing members 210 and 310, the cylinder outer peripheral covering portion 211 that covers the cylinder outer peripheral surface on the cylinder end side, The difference is that a configuration is provided that includes a crown portion 212 and 312 that continuously covers the cylinder end side with the cylinder outer peripheral covering portions 211 and 311.

Further, the screwing members 220 and 320 are formed in a cylindrical configuration having through holes 221 and 321 into which the ends of the cylinders are fitted, and the screwing members 220 and 320 are inserted through the through holes 221 and 321. The state force inserted into the center of the cylinder is also directed toward the end of the cylinder, and the inner peripheral surfaces of the outer peripheral covering portions 211 and 311 and the outer peripheral surfaces of the threaded members 220 and 320 are screwed together while the outer peripheral covering portion 211 The configuration is different in that the cylinder ends of the screw members 220 and 320 can be screwed forward and backward freely into the return gap between the cylinder and 311 and the outer peripheral surface of the cylinder.

[0074] Further, the return letter storage portions 290, 390 force and the outer peripheral cover portions 211, 311 and the crown portions 212, 312 of the tube end fixing members 210, 310 and the screw-side end surfaces of the screwing members 220, 320 Therefore, the difference is in the configuration in which the open side of the concave portion is concave in cross section facing the outer peripheral surface of the cylinder.

That is, the return-shaped housing portions 290 and 390 are formed by screwing tip end surfaces of the screwing members 220 and 320 and inner surfaces of the crown portions 212 and 312 of the cylinder end fixing members 210 and 310 facing the screwing tip end surfaces. It is constituted by the inner surfaces of the tube end covering portions 211 and 311 of the tube end fixing members 210 and 310.

[0075] As in the first embodiment, two return rings (40a, 40b) as return return seal members 40 are provided in the return return storage portions 290, 390, and between the two O-rings 40a, 40b. A metal ring 41a as a return interposition member 41 interposed between the cylinders is fitted to the outer peripheral surface of the cylinder (the fitting is the outer peripheral surface of the cylinder as in Examples 1 and 2). 41a is the cylinder axis direction Easily and slidably fitted! /

Accordingly, similarly to the above-described first and second embodiments, the pinching force according to the screwing of the screwing members 220 and 320 into the cylinder end fixing members 210 and 310 causes the gap between the screw members 220 and 320 toward the cylinder end. The plurality of annular seal members 40 (O-rings 40a, 40b) having the return-shaped intervening members 41 (metal rings 41a) interposed therebetween are used to press the return-shaped seal members that have a large force to elastically deform each of the return-shaped seal members 40. A plurality of seal portions corresponding to the number of O-rings 40a and 40b as return seal members can be provided in the cylinder axis direction.

[0077] The screwing of the screw members 220, 230 into the tube end fixing members 210, 310 is performed as follows.

Engagement in which screwing means (not shown) for screwing the screwing members 220 and 230 from outside the cylinder is engaged with the outer peripheral surface of the screwing members 220 and 230 on the rear end side in the screwing direction from the outside of the cylinder. As the means, at least a part of the turning means may be engaged, for example, a nut shape or the like (not shown). This engaging means is also different from the first and second embodiments.

[0078] If the present process described in Example 1 above is described as an example, in Example 3, first, at the beginning of the process, first, the aqueous alcohol is contacted. These are O-rings 40a, 40a (hereinafter also referred to as primary O-rings) located at the center of the cylinder, and at one or both ends of the cylinder 1, the primary O-rings 40a, 40a are used in this process. If, for example, corrosion occurs and the sealing function fails due to the process, the remaining one O-ring 40b, 40b (hereinafter, also referred to as “secondary O-ring”) comes into contact with the water-containing ethanol to seal it, and then the vacuum state of this process continues To maintain.

[0079] The compression sealing of the O-rings 40a and 40b is performed by a combination of the cylinder end fixing members 210 and 310 and the screw members 220 and 320 that are movable members, as in the first and second embodiments. It can be adjusted by adjusting the distance between the 220 and 320, that is, the axial length of the return groove storage sections 290 and 390 according to the screwing amount.

Therefore, specifically, a minus screwdriver (not shown) as a turning means is inserted into the engaging portions 23 and 33 of the screwing members 220 and 320, and the fitting storage portion 29 and 39 of By reducing the axial length interval width, the right and left O-rings (40a, black and 40a, 40b) are compressed by the metal ring 41a and deformed.

[0080] Therefore, in the same manner as in Examples 1 and 2, in order to properly seal the return gap between the inner peripheral surface of the cylinder and the (lower peripheral surface of) the screwing member, "screw-tightening" is performed in advance. After confirming the state of vacuum maintenance by torque (rotational force), determine the torque with sealing durability (hereinafter referred to as “determined torque”), and then “tighten” the determined torque. In addition, appropriate sealing can be easily and quickly performed.

Example 4

Next, an outer sealing type (lid type) vacuum maintenance device of Example 4 in which three O-rings are provided on the outer peripheral surface side of the cylindrical body as return seal members is shown in FIGS. It will be explained based on.

Fig. 13 is a vertical side view of the vacuum maintenance device mounted on the cylinder, Fig. 14 is a vertical side view of the vacuum maintenance device in a disassembled state, and Fig. 15 is a vertical side view of one of the seals constituting the vacuum maintenance device. FIG. 16 is a vertical sectional side view of the other sealing device constituting the vacuum maintenance device. In the drawings, the same reference numerals as those used in the first to third embodiments and FIGS. 1 to 12 have substantially the same contents, and thus description thereof will be omitted.

The configuration of the fourth embodiment is different from the third embodiment in that the axial lengths of the return-shaped storage portions 290 and 390 in the third embodiment are formed to be longer, and two O-rings, that is, primary O-rings are provided in the return-shaped storage portions 290 and 390. There is a configuration in which a ring 40a and a secondary O-ring 40b are put together, and a tertiary O-ring 40c is further provided via a metal ring 41b.

Other configurations and operations are substantially the same as those of the first to third embodiments.

[0083] If the process described in Example 1 above is described as an example, also in Example 4, the first contact with the hydrous alcohol is located at the center of the cylinder. The primary O-rings 40a, 40a are located at one or both ends of the cylindrical body 1.If the primary O-rings 40a, 4Oa are corroded due to the course of this process, for example, and a seal failure occurs, the next position is determined. The secondary O-rings 40b, 40b come into contact with the aqueous ethanol to seal it and maintain the vacuum in the process by bow I, and the secondary O-rings 40b, 40b are corroded and cause a sealing failure. And the tertiary O-ring 40c, 40c located at the end contacts the aqueous ethanol and seals it. Then, maintain the vacuum in this process.

As described above, similarly to the above-mentioned embodiment f row 3, the secondary O-rings 40b, 40b have the so-called backup function of the primary O-rings 40a, 40a, and the tertiary rings 40c, 40c have the so-called backup function of the secondary O-rings 40b, 40b. As a result, the vacuum state in this process can be maintained for a longer period of time without interruption as compared with the third embodiment.

[0085] According to the vacuum maintaining devices of Examples 1 to 4, at both ends of the cylindrical body 1, two or more annular seal members, that is, a plurality of O-rings are used until the primary O-ring force reaches the final O-ring. Sequentially, the corrosion of the primary O-ring causes the secondary O-ring to come into contact with substances existing outside, and the secondary O-ring has a backup function of the primary O-ring, thus ensuring extremely long-term durability. It is possible to maintain the structure.

It should be noted that two or more O-rings can be specifically configured using three O-rings or four O-rings in actual use.In this case, two or more O-rings are used. As a matter of course, it has long-term durability as compared with the case.

[0086] Also, compared to glass and resin, the O-ring has a certain elasticity, so that the vibration absorbing function is improved, and the cylinder end fixing member of the cylinder or the sealing member {the threaded member} due to the impact of the water hammer. The possibility of causing breakage or deformation of the O-ring etc. can be extremely reduced, and it is not necessary to replace the cylinder and the vacuum maintenance device as a set, so in consideration of durability, for example, Renewal of each O-ring and cylinder is possible, and as a result, waste of cost or labor can be largely saved.

[0087] In addition, by using an O-ring having heat resistance and chemical resistance as an annular seal member in the vacuum maintenance device of the present invention, there is a concern that harmful substances caused by the seal member (sealing material) may be dissolved into the product. Will be resolved.

Example 5

Example 5 relates to the improvement of the cylinder (permeable component separation member) 1 to which the plug-type vacuum maintenance device 10 is attached in the above-described Examples 1 and 2, and the zeolite membrane is not applied. A portion of the cylindrical body, for example, the end face of the cylinder and a ring-shaped seal member provided at the innermost end of a group of return-shaped seal members provided at least in a plurality of stages continuously toward the inner end of the cylinder until they come into contact with each other. The outer peripheral surface of the cylinder corresponding to the annular seal member located on the inner peripheral surface side or at the innermost position By applying an impermeability treatment on the side to prevent the permeation of the permeable component, the effectiveness of the vacuum maintenance device of the present invention is enhanced.

Hereinafter, this will be described with reference to FIGS. 17 to 19.

FIG. 17 is an explanatory view of a configuration in which the zeolite film is applied only to the outer peripheral surface of the cylinder, FIG. 18 is an explanatory view of a configuration in which the zeolite film is applied from the outer peripheral surface of the cylinder to the inner side of the cylinder through the end surface of the cylinder, and FIG. FIG. 3 is an explanatory diagram of a configuration that has been subjected to opacity processing.

17 to 19, one annular seal member (primary O-ring 40a) and one return interposition member (metal ring 41a) are shown for convenience of drawing, and the other annular seal members are shown. That is, the secondary O-ring 40b) and the subsequent steps are omitted.

In FIG. 17, as shown by the arrow in the figure, in the cylindrical body 1 in which the zeolite membrane 6 is merely provided on the outer peripheral surface of the cylinder (the outer peripheral surface of the cylinder), the component that does not pass through the zeolite membrane 1, ie, the separation purpose Components in the mixed substance that are not components (hereinafter, also referred to as unintended components) penetrate into the cylinder wall from the cylinder end face or edge portion (shown by a circle in the figure) where the zeolite membrane 6 is not applied, There is a risk of passing through the inside of the cylinder wall (beyond the O-ring 40a as the return seal member 40) and penetrating into the inside 4 of the cylinder, and the permeation (leakage) of unintended components that do not pass through the zeolite membrane 6 naturally occurs. However, there is a problem that the degree of purification of the target component is reduced and the product quality is deteriorated.

FIG. 18 shows, as one means for solving the above problem, a structure in which the zeolite film 6 is applied in a series from the outer peripheral surface of the cylinder to the inner side of the cylinder at the end of the cylinder through the end surface of the cylinder. .

It is preferable that the zeolite film 6 applied on the inner side of the cylinder be formed beyond the final next O-ring (not shown) located at the innermost position from the end of the cylinder. In this case, it is easier to form a film if the end of the cylinder wall is curved in advance, for example, the end of the cylinder wall is curved into a U-shaped cross section as shown in the figure.

By forming the film in this manner, permeation (leakage) of unintended components that do not pass through the zeolite membrane 6 can be prevented.

However, such film formation is technically feasible, but requires a lot of processing time and a low yield. is there.

[0092] FIG. 19 shows, in order to further solve this problem, regardless of the purpose and non-purpose, over the cylinder end surface where the unintended components may penetrate and the inner peripheral surface of the cylinder end or the outer peripheral surface of the cylinder. It is configured to have an opaque treatment. In the illustrated example, the inner peripheral surface of the cylinder from the outer peripheral surface of the cylinder to the portion where the o-ring (final next o-ring) as the return ring member located at the innermost position on the inner side of the cylinder through the cylinder end surface is in contact. And a series of opacity treatments 7.

However, the present invention is not limited to this example. For example, it is not always necessary to apply the force on the outer peripheral surface of the cylinder at the end of the cylinder. May be subjected to impermeability treatment 7 continuously from the end face of the cylinder and the end face of the cylinder to the inner side of the cylinder, that is, the required inner peripheral surface of the cylinder. Alternatively, it is only necessary to appropriately perform the impermeability treatment 7 on at least the portion of the inner peripheral surface of the cylinder that is in contact with the O-ring as the annular sealing member.

[0093] In addition, the impermeability treatment for the outer peripheral surface of the cylinder at the cylinder end may be performed, for example, by continuously changing the cylinder end face force as shown in the drawing, or ideally, in accordance with the purpose of preventing penetration of unintended components. The impermeability treatment 7 may be applied to the outer peripheral surface of the cylinder until the end force corresponds to the innermost return seal member (not shown) provided in the cylinder.

In this case, as described with reference to FIG. 18, in this case, it is preferable that the cylinder end side of the cylinder wall is curved in advance, but as shown by a circle in FIG. 19, this curved processing is not always necessary. Absent.

[0094] The impermeable treatment agent 7 may be any material that can make the porous surface of the cylindrical body 1 non-porous. For example, molten glass or glass is sealed with a solvent-resistant resin or the like as a glaze.

The glaze is prepared, for example, by mixing a commercially available material such as a solvent, silicic acid, and kaolin with water. As the solvent, an alkali such as feldspar or lead, boric acid, lime, ash or the like which melts silicic acid such as silica sand or quartz is used as the solvent (alkaline solvent). Silicic acid also functions to moderately suppress overmelting. Kaolin is a clay that functions to adhere to the substrate.

[0095] In the glaze sealing treatment as the impermeability treatment 7, the required surface of the cylindrical body to be treated is immersed in a mixed slurry solution obtained by mixing the glaze thus adjusted with the same amount of water. The immersion treatment can be performed any number of times after the melting treatment in order to sufficiently seal. It should be noted that the mixed slurry may be applied to a required portion (surface) of the cylindrical body using a brush, a brush, or other tools, not limited to immersion.

After the glaze is applied in this way, by melting at a predetermined temperature, for example, 1200 to 1300 ° C., a required portion on both end surfaces of the cylindrical body is subjected to an impermeability treatment 7. [0096] As described above, the glaze sealing processing as the opaque processing 7 is described using an example of a plurality of annular sealing members 40 (O-rings 40a to O-rings 40b and 40c shown in the drawing) provided in multiple stages. Depending on the composition of the force-mixed material, a single annular seal member 40, that is, a single annular seal member 40 (one O-ring 40a) may be used to provide a single-stage seal portion (FIG. 19). )

Also in this case, the region (range) in which the glaze sealing process is performed as the opaque process 7 is the same as the opaque process 7 for the plurality of annular seal members 40 described above. It is necessary to perform the impermeability treatment 7 on the portion of the inner peripheral surface of the cylinder where 40 contacts.

Industrial applicability

[0097] The present invention provides a method for maintaining a vacuum on a permeable component separation tubular member (tube) of a zeolite carrier used in a dehydration step of a water-containing organic solvent such as aqueous ethanol or an IPA-containing aqueous solution after cleaning for specific use. As a device, it has a certain vibration absorption function, can eliminate the concern that harmful substances caused by the sealing material may elute into the product, does not require the need to replace the cylinder and vacuum maintenance device as a set, and furthermore, Since it has a certain durability, it can be widely applied. Brief Description of Drawings

FIG. 1 is a longitudinal sectional side view of a vacuum maintenance device mounted on a cylindrical body (Example 1).

FIG. 2 is a longitudinal sectional side view of a state where the vacuum maintenance device is disassembled (Example 1).

FIG. 3 is a longitudinal side view of one sealing device constituting the vacuum maintenance device (Example 1).

FIG. 4 is a longitudinal sectional side view of the other sealing device constituting the vacuum maintenance device (Example 1).

FIG. 5 is a longitudinal sectional side view of a vacuum maintenance device mounted on a cylindrical body (Example 2).

FIG. 6 is a longitudinal sectional side view of a state where a vacuum maintenance device is disassembled (Example 2).

FIG. 7 is a longitudinal sectional side view of one of the seals constituting the vacuum maintenance device (Example 2).

FIG. 8 is a longitudinal sectional side view of the other sealing device constituting the vacuum maintenance device (Example 12).

FIG. 9 is a longitudinal sectional side view of a vacuum maintenance device mounted on a cylinder (Example 3).

FIG. 10 is a longitudinal sectional side view of a state where a vacuum maintenance device is disassembled (Example 3).

FIG. 11 is a longitudinal sectional side view of one of the seals constituting the vacuum maintenance device (Example 3).

FIG. 12 is a longitudinal sectional side view of the other sealing device constituting the vacuum maintenance device (Example 3). FIG. 13 is a longitudinal sectional side view of a vacuum maintenance device mounted on a cylindrical body (Example 4).

FIG. 14 is a longitudinal sectional side view of a state where the vacuum maintenance device is disassembled (Example 4).

FIG. 15 is a longitudinal sectional side view of one of the seals constituting the vacuum maintenance device (Example 4).

FIG. 16 is a vertical sectional side view of the other sealing device constituting the vacuum maintenance device (Example 4).

FIG. 17 is an explanatory view of a configuration in which a zeolite film is applied only to the outer peripheral surface of a cylinder (Example 5).

FIG. 18 is an explanatory view of a configuration in which a zeolite film is applied to the inner side of the cylinder via the cylinder end face through the cylinder end face (Example 5).

FIG. 19 is an explanatory diagram of a configuration that has undergone opacity processing (Example 5).

Explanation of symbols

1, 100 cylinder

2 Container wall

4 Inside the cylinder

6 Zeolite membrane

7 Impermeable treatment (glaze seal)

10 Vacuum maintenance device

20, 30, 200, 300 Seals

21, 31, 210, 310 Tube end fixing member (sealing device)

22, 32, 220, 320 Screw member (sealing device)

23, 33 Engagement means

25, 35 Low peripheral surface (screw member)

26, 36 Step surface (screw member)

28, 38 Tube inner end surface (Cylinder end fixing member)

29, 39, 290, 390 Return letter storage

40 Annular seal member (annular seal member group)

40a, 40b, 40c O-ring (annular sealing member)

41 Intervening members

41a, 41b Metal ring (return member)

211, 311 Cylinder outer peripheral cover (cylinder end fixing member of Examples 3 and 4) 212, 312 Coronal part (cylinder end fixing member of Examples 3 and 4) 221, 311 Through hole (cylinder end fixing member of Examples 3 and 4)

Claims

The scope of the claims

In a vacuum maintaining device that closes both cylinder ends of a permeable component separation tubular member that separates required components in a mixed substance outside the cylinder by permeating through the cylinder wall with a negative pressure inside the cylinder,

The vacuum maintenance device is provided with a sealing member mounted on each of the two cylinder ends to seal the cylinder ends, wherein the sealing member is attached to the cylinder end fixing member fixed to the cylinder end and the cylinder end fixing member in the cylinder axis direction. A screw member to be screwed,

A return-shaped storage portion formed between the cylinder-end fixing member and the threaded member and the inner circumferential surface or outer circumferential surface of the cylindrical end, and a plurality of return-shaped seals fitted to the return-shaped storage portion; A return member interposed between the return seal member and being slidable in the axial direction of the cylinder, wherein the return member is squeezed according to the screwing of the screw member into the cylinder end fixing member. A vacuum maintaining device, wherein a plurality of seal portions corresponding to the number of the return seal members are provided in a cylindrical axial direction by elastically deforming a seal member.

A return-shaped storage portion formed between the cylinder-end fixing member and the threaded member and the inner or outer circumferential surface of the cylinder at the end of the cylinder; and a single return shape fitted to the return-shaped storage portion. A seal member provided with a seal portion by elastically deforming the return seal member with a squeezing pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and at least the annular seal member being in contact with the inner periphery of the cylinder. A vacuum maintenance device characterized in that a surface has been subjected to an opacity treatment.

Both or at least one of the seals respectively attached to the ends of the two cylinders is fixed to the container wall surface of the mixed substance so as to be freely detachable, and penetrated through the seal member fixed to the container wall surface to the outside of the container. 2. An outflow passage for removing components is formed, wherein the outflow passage is formed. Item 3. The vacuum maintenance device according to Item 2.

[4] The cylinder end fixing member is formed with a through screw hole in the cylinder axis direction,

The screwing member is provided with a single return seal member or in the direction of the tube end on the outer peripheral surface on the inner side of the tube of the screwing member screwed into the through screw hole from the inside of the tube to the outside of the tube end. A stepped portion having a stepped surface for pressing a return seal member group formed of a plurality of annular seal members is formed, and a low peripheral surface of the stepped portion is formed so as to be able to fit into the through screw hole. A return-shaped storage section having a concave cross section in which the open side of the concave portion faces the inner peripheral surface side of the cylinder is provided between the peripheral surface and the inner end surface of the cylinder end fixing member facing the step surface. The vacuum maintenance device according to any one of claims 1 to 3.

[5] A single return seal member or an annular seal member group including a plurality of return seal members and a return return intermediate member is provided on a low peripheral surface of the return return storage portion. The vacuum maintenance device described in Item 4.

[6] The cylinder end side surface of the screwing member is provided with an engagement means with which a turning means for screwing the screwing member is engaged with the cylinder end outside force. The vacuum maintenance device according to any one of the above.

[7] The vacuum maintenance device according to claim 6, wherein the engagement means is configured to be able to be disengaged from the insertion-side tip of the turning means.

[8] The vacuum maintenance device according to any one of claims 2 to 7, wherein an impermeability treatment is applied to an inner peripheral surface of the cylinder until a single return seal member comes into contact with the cylinder end force. .

[9] Any one of claims 2 to 7, wherein an impermeability treatment is applied to the end surface of the cylinder and the inner peripheral surface of the cylinder until a single return seal member continuously contacts the end surface of the cylinder. The vacuum maintenance device according to any one of the above.

[10] The vacuum maintenance device according to any one of claims 2 to 7, wherein an impermeability treatment is applied to an outer peripheral surface of the cylinder until it corresponds to a single return seal member. .

[11] The non-permeation treatment is applied to the outer peripheral surface of the cylinder until it corresponds to a single return seal member continuously to the cylinder end face, according to any one of claims 2 to 7, Vacuum maintenance device.

[12] At least a plurality of stages of return seal members provided toward the inner side of the cylinder from the cylinder end come into contact with each other. 8. The vacuum maintenance device according to claim 1, wherein an impermeability treatment has been applied to the inner peripheral surface of the cylinder up to.

[13] An impermeability treatment is applied to the cylinder end surface and at least a plurality of stages of the inner circumferential surface of the cylinder until at least a plurality of stages of the return-shaped seal member provided toward the back of the cylinder come into contact with the cylinder end surface. The vacuum maintenance device according to any one of claims 1, 3, and 7.

[14] The cylinder end force, wherein an impermeability treatment is applied to the inner peripheral surface of the cylinder until the return seal member provided at the innermost position comes into contact therewith. The vacuum maintenance device according to any one of the above.

[15] The cylinder according to claim 1, wherein an impermeability treatment is applied to the cylinder end surface and an inner peripheral surface of the cylinder until the return-shaped seal member provided at the innermost portion is continuous with the cylinder end surface. The vacuum maintenance device according to any one of claims 3 to 7.

[16] The opaque treatment is performed on the outer peripheral surface of the cylinder from the cylinder end to at least the portion corresponding to the return seal member provided on the inside of the cylinder at the most end of the cylinder. Item 16. A vacuum maintenance device according to any one of Items 15.

[17] The non-permeation treatment is performed on at least the outer peripheral surface of the cylinder, which is continuous with the cylinder end surface and at least corresponds to the return seal member on the cylinder end side provided in the cylinder. 16. The vacuum maintenance device according to any one of claims 15 to 15.

[18] On the outer peripheral surface of the cylinder from the cylinder end to the innermost return seal member provided in the cylinder

The vacuum maintenance device according to any one of claims 12 to 15, wherein the vacuum maintenance device is subjected to an opacity treatment.

[19] The opaque treatment is performed on the outer peripheral surface of the cylinder, which is continuous with the end surface of the cylinder and corresponds to the innermost return seal member provided in the cylinder. 16. The vacuum maintenance device according to any one of 15.

20. The vacuum maintenance device according to claim 2, wherein the opaque treatment is a glaze sealing treatment.

21. The vacuum maintenance device according to claim 20, wherein the glaze sealing process is performed by applying a mixed slurry of glaze and water to a required portion of the cylindrical body and then performing a melting process at a predetermined temperature.

[22] The glaze enhances the adhesion to the substrate with alkaline medium solvent, silicic acid to suppress over-dissolution 22. The vacuum maintenance device according to claim 20, wherein the vacuum maintenance device comprises

[23] The cylinder end fixing member is provided with a cylinder outer periphery covering portion covering the cylinder outer peripheral surface on the cylinder end side, and a crown-shaped portion connected to the cylinder outer peripheral covering portion and covering the cylinder end side,

The screw member has a through hole into which the cylinder end is fitted, and the screw member inserted through the through hole into the center of the cylinder is screwed into the inner peripheral surface of the outer peripheral covering portion of the cylinder. The outer periphery of the cylinder is formed so as to be able to advance and retreat in the return gap between the covering part and the outer periphery of the cylinder.

The cylindrical outer peripheral cover of the cylindrical end fixing member, a crown-shaped portion, and the entry side end surface of the screwing member are provided with a return-shaped storage section having a concave cross section with the open side of the concave portion facing the cylindrical outer peripheral surface side. The vacuum maintenance device according to any one of claims 1 to 3.

24. The vacuum maintenance device according to claim 23, wherein an annular seal member group including a return seal member and a return intermediate member is provided on an outer peripheral surface of the cylinder of the return housing portion.

[25] An engaging means for engaging a turning means for screwing the screwing member from outside the tube is provided on an outer peripheral surface of the end portion of the screwing member at the center of the tube. 24. The vacuum maintenance device according to 24.

26. The vacuum maintenance device according to claim 25, wherein the engagement means has a nut shape with which at least a part of the turning means is engaged.

27. The vacuum maintenance device according to claim 1, wherein the permeable component separation tubular member is formed of a porous material.

[28] The vacuum maintenance device according to any one of claims 1 to 27, wherein the permeable component separating tubular member is provided with a zeolite film on an outer peripheral surface of the tubular member.

[29] The return seal member and the return interposition member are arranged alternately so that the annular seal members are located at least at both ends. The vacuum maintenance device according to any one of claims 12 to 28.

[30] The vacuum maintenance device according to any one of claims 1 to 29, wherein the annular seal member is an O-ring or another elastic member formed in a return shape and capable of restoring deformation.

[31] The return interposition member is a metal member or other hard-to-deform! Hard member formed in a return shape. 31. The vacuum maintenance device according to any one of claims 1, 3, 3, and 12, and 12 to 30.

[32] A method for maintaining a vacuum in a vacuum maintaining device that closes both cylindrical ends of a permeable component separating cylindrical member that separates required components in a mixed substance outside the cylinder through a cylindrical wall with a negative pressure inside the cylinder. And

The vacuum maintaining device includes a sealing member attached to each of the two cylinder ends to seal the cylinder ends,

A sealing member fixed to the cylinder end, a screwing member screwed to the cylinder end fixing member in the cylinder axis direction,

A return-shaped storage portion formed between the cylinder-end fixing member and the threaded member and the inner circumferential surface or outer circumferential surface of the cylindrical end, and a plurality of return-shaped seals fitted to the return-shaped storage portion; A return member interposed between the return seal member and being slidable in the axial direction of the cylinder, wherein the return member is squeezed according to the screwing of the screw member into the cylinder end fixing member. The seal member is elastically deformed, and a plurality of seal portions corresponding to the number of the return seal members are provided in the cylinder axis direction,

Even if one or several stages of the seals fail, the seal function is maintained by the remaining at least one stage of seals, or the sealing function is further enhanced by the remaining at least one stage of seals. A vacuum maintaining method characterized by maintaining the vacuum.

[33] The vacuum maintaining method of a vacuum maintaining device for closing both cylindrical ends of a permeable component separating cylindrical member that separates required components in a mixed substance outside the cylinder through a cylindrical wall with a negative pressure inside the cylinder. And

A return-shaped storage portion formed between the cylinder-end fixing member and the threaded member and the inner or outer circumferential surface of the cylinder at the end of the cylinder; and a single return shape fitted to the return-shaped storage portion. With a sealing member The seal is provided by elastically deforming the return seal member with a squeezing pressure corresponding to the screwing of the screw member into the cylinder end fixing member, and at least an impervious treatment is performed on the inner peripheral surface of the cylinder contacting at least the annular seal member. And maintaining the sealing function by a single-stage sealing portion.