JP7413862B2 - Device - Google Patents

Description

TECHNICAL FIELD The present invention relates primarily to a device capable of switching fluid flows.

Various plants, including nonferrous refining plants, are equipped with piping for flowing liquids such as water. Further, the piping may be provided with a switching valve that can branch the fluid and switch and adjust the transfer rate and transfer timing.

For example, in Patent Document 1, using an acidic solution containing scandium extracted from nickel oxide ore, scandium is adsorbed and eluted with an ion exchange resin to separate it from impurities, and a highly pure scandium raw material solution is recovered. A method for recovering scandium is described.

This scandium recovery method includes at least a leaching step in which nickel oxide ore containing nickel, scandium, aluminum, and chromium is leached with sulfuric acid under high temperature and high pressure to obtain a leachate, and a neutralizing agent is added to the leachate to remove impurities. a neutralization step to obtain a neutralized precipitate and a neutralized solution, a sulfurization step to obtain nickel sulfide and a sulfurized solution by adding a sulfiding agent to the neutralized solution, and a chelate resin to convert the sulfurized solution to a chelate resin. an ion exchange step in which scandium is adsorbed on the chelate resin by contacting with the chelate resin to obtain a scandium eluent; a solvent extraction step in which the scandium eluate is brought into contact with an extractant to obtain a back extract; and a neutralizing agent is added to the back extract. Alternatively, it includes a scandium precipitation step in which oxalic acid is added to obtain a precipitate, and a roasting step in which the precipitate is dried and roasted to obtain scandium oxide.

In this way, in the scandium recovery method, the sulfurized liquid is brought into contact with the chelate resin to cause scandium to be adsorbed onto the chelate resin. Specifically, first, columns are arranged in parallel on multiple floors, and an equal amount of the entire amount of adsorption starting solution is passed through each column, and the scandium to be recovered is spread over multiple floors. It is adsorbed to chelate resin through treatment. Each column is moved one by one every time one batch is completed, and the columns are sequentially moved downstream in the process over a plurality of batches, thereby switching the column through which the liquid is passed.

On the other hand, the cleaning solution is sent to other columns to which the adsorption starting solution has not been sent, and the columns are similarly moved sequentially over multiple batches by moving only one column after each batch. Switch the column to which the liquid is applied.

Such switching of the flow of different types of fluids is sometimes performed by a continuous countercurrent multistage ion exchanger (CCIX). CCIX is equipped with a switching valve that allows liquid to be sent to an arbitrary destination in order to switch the liquid passing operation for ion exchange treatment. A technique related to CCIX equipped with a switching valve is described in, for example, Patent Document 2.

For example, as shown in FIG. 1, the switching valve includes a top plate 11 disposed above, a top disk 12 disposed below the top plate 11, and a process disk disposed below the top plate 11 in contact with the top plate 11. 13 and an external ring 14 arranged so that the end and inner edge of the process disk 13 are in contact with each other, and the switching valve has a structure in which the process disk 13 is rotated by power. , it is possible to freely send different types of fluids to any destination.

The process disk has a plurality of compartments separated by partition walls to handle different types of fluids. The hermeticity of the process disk is important in order to prevent different types of fluids from leaking into the process disk.

Therefore, by fixing the top plate, top disk, and external ring using bolts or the like near the ends in plan view, the process disk and top disk are brought into close contact and the sealing performance of the process disk is ensured. It has a structure that prevents liquid leakage.

Japanese Patent Application Publication No. 2017-210675 Special Publication No. 2004-509761

Devices such as switching valves used in various plants are subject to slight distortion as they are used, causing the center to float relative to the fixed ends, causing the process disk to lose its sealing properties. The inventor has revealed that this causes liquid leakage within the process disk.

In particular, when using a switching valve that can switch the flow of different types of fluid, the fluid flows from the pump into the process disk, and this pressure causes internal pressure to be applied inside the process disk, causing the center of the process disk to float more. This causes liquid leakage to occur more significantly within the process disk.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a device that can effectively prevent liquid leakage within a process disk.

The present inventors have discovered that the above problem can be solved by an apparatus in which an elastomer plate is disposed between the top plate and the top disk in an area including the centers of these plates, and have completed the present invention. Ta.

(1) The first aspect of the present invention includes at least a top plate disposed above, a top disk disposed below the top plate, and a process disk disposed below the top disk in contact with the top plate. an external ring disposed such that an end of the process disk and an inner edge thereof are in contact with each other, the process disk having at least one or more compartments into which fluid can flow, and the top plate The top disk and the external ring are provided with a plurality of fixing means for fixing them, and the plurality of fixing means are located near the ends on a diagonal line passing through their centers of gravity in a plan view, and the top plate and said top disk, in which an elastomeric plate is arranged in an area containing the center.

(2) A second aspect of the present invention is the device according to the first aspect, in which the process disk includes a plurality of compartments into which fluid can flow.

(3) A third aspect of the present invention is the device according to the second aspect, in which the process disk includes a plurality of compartments partitioned by partition walls formed concentrically in a plan view.

(4) A fourth aspect of the present invention is the device according to the third aspect, wherein the elastomer plate has a Shore A hardness of 40 or more and 70 or less.

(5) A fifth aspect of the present invention is the device according to any one of the first to fourth aspects, wherein the elastomer plate has a thickness of 2 mm or more and 10 mm or less.

(6) A sixth aspect of the present invention is the device according to any one of the first to fifth aspects, wherein the elastomer plate has a Shore A hardness of 40 or more and 70 or less.

(7) According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the fixing means is a device formed in a circumferential shape near the ends thereof.

(8) The eighth aspect of the present invention is the device according to any one of the first to seventh aspects, which is a switching valve capable of switching the flow of fluid.

According to the present invention, liquid leakage within the process disk can be effectively prevented.

FIG. 1 is a schematic diagram (cross-sectional view) schematically showing the configuration of the device. FIG. 2 is a cross-sectional view taken along line AA of the device in FIG. 1;

Hereinafter, a specific embodiment of the present invention (hereinafter referred to as "this embodiment") will be described in detail. Note that the present invention is not limited to the following embodiments, and can be implemented with appropriate modifications within the scope of the purpose of the present invention.

<Device>
FIG. 1 shows the configuration of an apparatus according to this embodiment. The apparatus 1 according to the present embodiment includes at least a top plate 11 disposed above, a top disk 12 disposed below the top plate 11, and a process disposed in contact with and below the top disk 12. It includes a disk 13 and an external ring 14 arranged so that the end of the process disk and the inner edge are in contact with each other. Note that the process disk 13 and external ring 14 are sandwiched between the top disk 12 and the bottom disk 15.

The top plate 11, the top disk 12, and the external ring 14 are provided with a plurality of fixing means 19 for fixing them, and the plurality of fixing means 19 are arranged on a diagonal line passing through their center of gravity in plan view. It is located near the end. With such a plurality of fixing means 19, the top plate 11, top disk 12, and external ring 14 can be fixed from the ends, thereby improving the sealing performance of the process disk 13.

The process disk 13 includes at least one compartment into which fluid can flow.

The device 1 according to the present embodiment is characterized in that an elastomer plate 2 is disposed between the top plate 11 and the top disk 12 in a region including the center thereof. Thereby, loss of sealing properties of the process disk 13 can be suppressed, and liquid leakage within the process disk 13 can be effectively prevented.

Below, each member constituting the device according to this embodiment will be explained.

[Elastomer board]
The elastomer plate 2 is placed between the top plate 11 and the top disk 12 in a region including their centers in a plan view, so that pressure is applied downward at the center of the top disk 12, causing pressure to be applied to the inside of the process disk 13. can effectively prevent liquid leakage.

The elastomer plate 2 is an elastic body such as rubber having a predetermined thickness. Although the Shore A hardness of the elastomer plate 2 is not particularly limited, it is preferably 40 or more and 70 or less. Since the Shore A hardness (JIS K 6253) of the elastomer plate 2 is 40 or more, downward pressure can be applied more effectively in the central portion of the top disk 12. By setting the Shore A hardness of the elastomer plate 2 to 70 or less, it is possible to suppress the occurrence of distortion and scratches on the top disk 12.

The thickness of the elastomer plate 2 is not particularly limited, but is preferably 2 mm or more and 10 mm or less. By setting the thickness of the elastomer plate 2 to 2 mm or more, downward pressure can be applied more effectively in the central portion of the top disk 12. By setting the thickness of the elastomer plate 2 to 10 mm or less, it is possible to suppress the occurrence of distortion and scratches on the top disk.

Although the shape of the elastomer plate 2 in plan view is not particularly limited, it is preferably approximately circular. Pressure is applied uniformly near the center of the top disk 12, making it possible to more effectively prevent liquid leakage within the process disk. Particularly, as will be described later, when the process disk includes a plurality of compartments partitioned by concentric partition walls (for example, FIG. 2), the approximately circular shape of the elastomer plate 2 allows By appropriately pressing the sealing members 132a of the arranged concentric partition walls, it becomes possible to seal the process disk 13 very effectively.

Further, when the shape of the elastomer plate 2 is approximately circular, the diameter of the elastomer plate 2 (in plan view) is preferably 15% or more of the diameter (in plan view) of the top disk. By setting the diameter of the elastomer plate 2 to be 15% or more of the diameter of the top disk, downward pressure can be applied more effectively to the central portion of the top disk 12. Although the upper limit of the diameter of the elastomer plate 2 is not particularly limited, it is preferably 40% or less of the diameter of the top disk.

[Process disk]
The process disk 13 includes a plurality of compartments 131a, 131b, and 131c partitioned by partition walls 133a, 133b, and 133c in plan view. This process disk 13 has a structure that is rotated by power, thereby making it possible to freely send different types of fluids to any desired discharge destination. Note that in the apparatus of the present invention, the process disk only needs to have at least one compartment; however, by having a plurality of compartments, it is possible to handle different types of fluids.

FIG. 2 is a sectional view (plan view) taken along the line AA of the apparatus in FIG. 1, and shows a plan view of the process disk 13 and the external ring 14. The process disk 13 has a plurality of compartments 131a, 131b, and 131c partitioned by partition walls 133a, 133b, and 133c formed concentrically in plan view. Fluid flows into the plurality of compartments 131a, 131b, and 131c.

The partition walls 133a, 133b, 133c are provided with sealing members 132a, 132b, 132c such as O-rings, and when the sealing members 132a, 132b, 132c come into contact with the lower surface of the top disk 12, the partition can be opened. 131a, 131b, and 131c are sealed to prevent liquid leakage.

At this time, for example, the partition wall 133c located on the end side of the process disk 13 is relatively close to the fixing means 19, so that the sealing member 132c of the partition wall 133c is appropriately pressed by the top disk 12, so that the sealing member 132c of the partition wall 133c is appropriately pressed. Liquid leakage can be prevented. On the other hand, the partition wall 133a on the center side of the process disk is relatively far from the fixing means 19, and as a result of a slight strain occurring in the process disk due to long-term use, the top disk 12 floats near the center and is present on the partition wall 133a. The sealing member 132a may not be pressed properly, and liquid leakage may occur between the partition walls near the center of the process disk. In particular, when a material with low durability at high temperatures, such as a polyolefin resin, is used for a component such as a process disk, such distortion is likely to occur and the problem of liquid leakage becomes significant.

Therefore, by placing the elastomer plate 2 between the top plate 11 and the top disk 12 in an area including the centers of these, downward pressure is applied at the center of the top disk 12, and the The sealing member 132a of the partition wall 133a is pressed appropriately, making it possible to appropriately seal the compartment 131a. Thereby, liquid leakage within the process disk 13 can be effectively prevented.

Note that an apparatus including a process disk 13 including a plurality of compartments 131a, 131b, and 131c partitioned by partition walls 133a, 133b, and 133c formed concentrically in a plan view is an example of a specific embodiment of the present invention. Although described above, in the present invention, the shape of the partition wall in plan view is not particularly limited. However, if the process disk 13 has partition walls formed in concentric circles, the partition wall will be located near the center of the process disk, such as the partition wall 133a in FIG. As a result, the problem of liquid leakage becomes significant. Since the elastomer plate 2 is disposed between the top plate 11 and the top disk 12 in an area including their centers as in the device 1 according to the present embodiment, liquid leakage is more likely to occur in this way. Even if the apparatus has this configuration, liquid leakage within the process disk 13 can be effectively prevented.

Materials for the sealing members 132a, 132b, 132c such as O-rings include natural rubber, nitrile rubber, chloroprene rubber, Hypalon, polybutadiene rubber, ethylene-propylene rubber (EPM), and ethylene-propylene-diene terpolymer (EPDM). ), acrylonitrile butadiene rubber (NBR), hydrogenated acrylonitrile butadiene rubber (H-NBR), silicone rubber, fluororubber, acrylic rubber, styrene butadiene rubber, chlorinated polyethylene rubber, millable urethane, thermosetting polyurethane, thermoplastic polyurethane, Alternatively, examples include those containing thermoplastic polyester and those coated with resins such as PTFE (polytetrafluoroethylene). Among these, those containing ethylene-propylene-diene terpolymer (EPDM) and those in which EPDM is coated with PTFE are preferred.

The outer edge of this process disk 13 is formed in a tapered shape so that the diameter decreases from the top disk 12 side toward the bottom disk 15 side. It is possible to improve the adhesion with the external ring 14 and prevent liquid leakage. Note that the outer edge of the process disk 13 may be provided with a gasket.

[External ring]
The external ring 14 is arranged so that the end of the process disk 13 and its inner edge are in contact with each other. The inner edge of the external ring 14 is tapered so as to reduce in diameter from the top disk 12 side toward the bottom disk 15 side. In this way, by forming the inner edge of the external ring 14 into a tapered shape, it is possible to improve the sealing performance with the process disk 13 and prevent liquid leakage.

[Top plate and bottom plate]
The top plate 11 and the bottom plate 16 are mainly made of metal members such as SUS. Then, rigidity can be imparted to the device 1 by being fixed together with other members by a fixing means to be described later.

[Fixing means]
The top plate 11, the top disk 12, and the external ring 14 are provided with a plurality of fixing means 19 for fixing them, and the plurality of fixing means 19 are located near the ends on a diagonal line passing through their centers of gravity in plan view. . By providing a plurality of fixing means 19 so as to be located near the ends on the diagonal line in this manner, these members can be fixed substantially horizontally.

As shown in FIG. 1, the fixing means includes a fixing means that inserts a bolt 17 through these members, attaches a nut 18 to the bolt 17, and tightens the nut 18.

Further, the plurality of fixing means 19 may be formed so as to be located on a diagonal line passing through the center of gravity, but as shown in FIG. It is preferable that This makes it possible to fix the process disk 13 and the top disk 12 circumferentially, thereby further improving the sealing performance of the process disk 13.

As described above, according to the present invention, liquid leakage within the process disk can be effectively prevented. Therefore, although the device of the present invention is not particularly limited in its use, it is preferably used as a switching valve that can switch between different types of fluid flows.

Furthermore, in the ion exchange step of adsorbing metal ions onto a chelate resin and obtaining an eluent for the metal ions, it is required to freely feed an adsorption starting solution and a cleaning solution to the chelate resin. In a plant that includes such an ion exchange process, the apparatus according to the present embodiment can effectively solve the problem of liquid leakage in the process disk that may occur due to long-term use. It is something.

1 Apparatus 11 Top plate 12 Top disk 13 Process disk 131a, 131b, 131c Compartment 132a, 132b, 132c Sealing member 133a, 133b, 133c Partition wall 14 External ring 15 Bottom disk 16 Bottom plate 17 Bolt 18 Nut 19 Fixing means 2 Elastomer plate

Claims (6)

At least a top plate disposed above, a top disk disposed below the top plate, a process disk disposed in contact with and below the top disk and rotated by power , and an end of the process disk. and an external ring arranged so that the inner edge and the inner edge of the valve are in contact with each other, the switching valve is capable of switching the flow of fluid and sends the fluid to an arbitrary discharge destination by rotation of the process disk ,
The outer edge of the process disk and the inner edge of the external ring are tapered so as to reduce in diameter from the upper side to the lower side,
The upper surface of the process disk and the lower surface of the top disk are provided with at least a plurality of compartments into which fluid can flow;
The plurality of compartments are each partitioned by a partition wall, and the partition wall includes a sealing member that contacts the lower surface of the top disk,
The top plate, the top disk, and the external ring are provided with a plurality of fixing means for fixing them, and the plurality of fixing means are located near the ends on a diagonal line passing through their centers of gravity in a plan view,
An elastomer plate is disposed between the top plate and the top disk in a region including the center thereof.
switching valve . The switching valve according to claim 1 , wherein the process disk includes a plurality of compartments partitioned by partition walls formed concentrically in a plan view. The switching valve according to claim 2 , wherein the elastomer plate has a substantially circular shape in plan view. The switching valve according to any one of claims 1 to 3 , wherein the thickness of the elastomer plate is 2 mm or more and 10 mm or less. The switching valve according to any one of claims 1 to 4 , wherein the elastomer plate has a Shore A hardness of 40 or more and 70 or less. The switching valve according to any one of claims 1 to 5 , wherein the fixing means are circumferentially formed near their ends.

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