WO2017199451A1 - コーンバルブ - Google Patents
コーンバルブ Download PDFInfo
- Publication number
- WO2017199451A1 WO2017199451A1 PCT/JP2016/067346 JP2016067346W WO2017199451A1 WO 2017199451 A1 WO2017199451 A1 WO 2017199451A1 JP 2016067346 W JP2016067346 W JP 2016067346W WO 2017199451 A1 WO2017199451 A1 WO 2017199451A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- valve body
- valve seat
- cone
- contact
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
- F04B53/1022—Disc valves having means for guiding the closure member axially
- F04B53/1025—Disc valves having means for guiding the closure member axially the guiding means being provided within the valve opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention relates to a cone valve used for preventing backflow when a fluid is fed.
- This application claims priority on the basis of Japanese Patent Application No. Japanese Patent Application No. 2016-097732 filed on May 16, 2016 in Japan. By referring to this application, the present application Incorporated.
- Nickel oxide ore was difficult to use as a nickel resource because of its low nickel content.
- a hydrometallurgical method using high-pressure acid leaching technology has been developed, and for example, nickel-cobalt mixed sulfide (nickel grade is about 60 wt%) can be produced economically (for example, see Patent Document 1). ).
- an ore slurry is prepared from ore having a predetermined particle size, and the resulting slurry is supplied to a high-temperature and high-pressure autoclave.
- the nickel and cobalt mixed sulfides are produced by leaching and lowering the temperature to reduce unnecessary substances such as leaching residues to obtain a leachate and sulfiding.
- the ore slurry is prepared with a solid content of about 25 to 45 mass% and a solid content particle size of about 2 mm or less (for example, see Patent Document 2), a temperature of about 250 ° C., and a pressure of 3.5 to 4.0 MPaG. Supplied to high pressure autoclave. Then, in accordance with the supply of the ore slurry, leaching mineral acid, oxidation promoting air, temperature maintaining steam, and the like are supplied, and stirring by the stirrer is performed, so that leaching proceeds.
- the pressure is raised simultaneously while raising the temperature to a temperature of about 200 ° C. and a pressure of about 1.5 MPaG.
- a pressure of 4.0 MPaG or more By pressing to a pressure of 4.0 MPaG or more, it is pushed into the autoclave.
- a diaphragm type pump capable of continuously supplying a necessary amount of ore slurry (about 240 m 3 / Hr) into an autoclave under a high temperature and high pressure condition, and a cone valve A type check valve is usually used.
- the ore slurry passing through the cone valve has been subjected to sieving in advance so that the solid content particle size is 1-2 mm, more preferably 1.4 mm or less.
- the solid content particle size is 1-2 mm, more preferably 1.4 mm or less.
- a slight backflow always occurs, and local wear is caused by slight damage to the valve body due to the impact when the cone valve is closed. proceed.
- the contact area between the valve body and the valve seat is small, so that the slurry bites in when the cone valve is closed. It is easy to pass through at this time, and bending portion wear occurs from the point through.
- Patent Document 4 discloses a check valve that can maintain the sealing performance of the valve body in a sealed state and extend the life even when such a slurry of hard particles is fed. Has been.
- valve body of the valve part that moves so as to be openable / closable with respect to the valve seat of the main body part provided in the cone valve repeatedly opens and closes, there is a risk that the main body valve seat is impacted and damaged.
- the fluid to be fed is a coarse ore slurry
- coarse particles contained in the ore slurry are caught in the contact portion between the valve body and the valve seat, and the valve seat is damaged. there were.
- the present invention has been made in view of the above problems, and can reduce the risk of damaging the valve seat even when used as a check valve when feeding a slurry containing coarse particles having high wear properties.
- An object is to provide a new and improved cone valve which is possible.
- One aspect of the present invention is a cone valve used as a check valve when feeding slurry, and a valve seat and a valve that reciprocates in a predetermined direction with respect to the valve seat and opens and closes.
- Body and a coil spring incorporated so that the valve body comes into contact with the valve seat, and the valve seat has an annular contact surface by contact with an end of the valve body, and the valve The seat is configured to have a thick portion in which the thickness in the normal direction of the contact surface increases toward the inside from the contact surface.
- valve seat is configured to be thick at a portion that contacts the end of the valve body, the valve seat is damaged even if the opening and closing operation of the valve body with respect to the valve seat is repeated. Can reduce the risk.
- the end of the valve body is bent so as to be separated from the contact surface at the outermost periphery of the contact surface, and a side surface is bent.
- the reciprocating direction of the valve body or the inner side direction of the contact surface with respect to the reciprocating direction may be employed.
- the end of the valve body may be formed in a disc shape and the maximum diameter may be 226 to 236 mm.
- the total length of the coil spring may be shorter than at least the stroke length of the valve body when it is equal to or less than the free length.
- the slurry may be a nickel oxide ore slurry.
- the risk of damaging the valve seat is reduced by reducing the risk of damage to the valve seat.
- the lifetime of the cone valve can be extended.
- FIG. 1 is a schematic view showing an example of use of a cone valve according to an embodiment of the present invention.
- the cone valve 1 is a coarse particle (maximum particle diameter is 1 to 2 mm) having high wear properties, for example, when feeding ore slurry obtained by pretreating nickel oxide ore.
- the liquid delivery apparatus 100 includes an upstream side slurry tank 101, a downstream side slurry tank 102, and a diaphragm pump 103.
- the upstream side slurry tank 101 and the downstream side slurry tank 102 are connected by a first pipe 104.
- the diaphragm pump 103 is connected to the first pipe 104 through the second pipe 105.
- the first pipe 104 and the second pipe 105 are connected by a connecting portion 106.
- One cone valve 1 is installed in the first pipe 104 a between the connecting portion 106 and the upstream slurry tank 101 (upstream cone valve 1 a), and between the connecting portion 106 and the downstream slurry tank 102.
- One is installed in the first pipe 104b (downstream cone valve 1b).
- the liquid feeding device 100 opens the upstream cone valve 1a and closes the downstream cone valve 1b.
- slurry is supplied to the diaphragm pump 103 from the upstream tank (pressure ⁇ 1.5 MPaG) 101.
- the liquid delivery device 100 has the upstream cone valve 1a closed and the downstream cone valve 1b opened.
- slurry is supplied from the diaphragm pump 103 to the downstream tank (pressure ⁇ 4.0 MPaG).
- the cone valve 1 is configured such that when the slurry containing coarse particles having high wearability is fed, the diaphragm portion of the diaphragm pump 103 is left and right (high and low pressure (1.5 MPaG to 4.0 MPaG)). With the repeated movement to one or the other), the open / close state is repeatedly switched.
- FIG. 2 is a cross-sectional perspective view showing an example of a cone valve according to an embodiment of the present invention
- FIG. 3 shows that the valve body and the valve seat of the cone valve according to the embodiment of the present invention are in contact with each other.
- FIG. 4 is a cross-sectional front view illustrating an example of a closed state
- FIG. 4 is a cross-sectional front view illustrating an example of an open state in which a valve body and a valve seat of a cone valve according to an embodiment of the present invention are separated.
- the cone valve 1 of the present embodiment includes at least a valve portion 10 having a valve body 11, a main body portion 12 provided with a valve seat 13, and a valve body 11.
- a coil spring 14 is provided so as to come into contact with the seat 13.
- the valve portion 10 is made of, for example, 25% Cr cast steel and, as shown in FIG. 3, protrudes from the one end portion of the columnar rod member 10a and the rod member 10a toward the outside in the radial direction of the rod member 10a. And a valve body 11.
- the valve portion 10 is in the main body portion 12 and is housed in a range from one end of the main body portion 12 to the valve seat 13 so as to be movable along the axial direction of the main body portion 12. That is, the valve unit 10 has a function of opening and closing the valve body 11 by reciprocating in a predetermined direction with respect to the valve seat 13.
- the main body 12 is made of, for example, 25% Cr cast steel, and as shown in FIG. 3, the main body 12 has an insertion portion 15 into which the slurry is inserted and the valve portion 10 is accommodated, and is formed in a cylindrical shape. Yes. Further, as shown in FIGS. 2 to 4, the midway part 12 a in the insertion part 15 of the main body part 12 is configured to protrude toward the inside in the radial direction of the main body part 12, and the midway part 12 a A valve seat 13 that contacts the valve body 11 is provided. The portion of the valve body 11 that makes line contact with the valve seat 13 becomes an annular contact surface so as to prevent the slurry from moving in the closed state.
- valve seat 13 is provided with an annular contact surface by contact with the end 11 a of the valve body 11.
- the “contact surface” referred to here intersects the valve body 11 when extended, but when the valve body 11 is divided by the extended contact surface, the valve body 11 on the side in contact with the contact surface becomes the end portion 11a.
- the valve seat 13 in order to ensure durability against an impact from the valve body 11 that repeatedly performs opening and closing operations, has a portion that contacts the end portion 11a of the valve body 11 as shown in FIG. Constructed in thickness.
- the valve seat 13 is configured such that the thickness of the portion that contacts the end portion 11a of the valve body 11 increases from the top side of the valve seat 13 toward the middle side.
- the “thickness” mentioned here is defined in the normal direction of the contact surface with the end portion 11 a of the valve body 11. That is, the valve seat 13 is configured to have a thick portion whose thickness increases in the normal direction of the contact surface toward the inner side from the above-described annular contact surface.
- valve body 11 When the valve body 11 is repeatedly opened and closed, the valve body 11 and the valve seat 13 are worn, and the contact surface itself moves to the inner peripheral side. For this reason, in this embodiment, it is set as the structure provided with the thick part inside the contact surface at the time of a new article in anticipation of the movement to the inner peripheral side of this contact surface itself. This makes it possible to withstand impacts in the future.
- the thickness of the thick portion of the valve seat 13 is, for example, 20 to 40 mm.
- the contact surfaces of the valve body 11 and the valve seat 13 are worn, and the width of the contact surface is increased. Since it is difficult to increase the strength of the outer peripheral side of the valve body 11, it is better to make the contact surface difficult to spread to the outer peripheral side.
- the surface of the valve body 11 is bent from the outermost periphery of the contact surface to the outer surface (from the outermost periphery of the contact surface toward the inner side). It can be the reciprocating direction, or closer to the inner periphery of the contact surface than the reciprocating motion, that is, the inner side direction of the contact surface from the reciprocating direction of the valve body 11. As a result, the diameter of the valve body 11 does not increase in the vicinity of the contact surface, so that the increase in the outer diameter of the contact surface can be prevented.
- a sliding support member 16 that slidably supports the valve portion 10 is attached in the other end region 15 a on the other end side of the main body portion 12.
- the sliding support member 16 is formed in an annular shape, and is fitted in the fitting portion 17 fitted to the inner peripheral surface of the other end region 15 a of the main body portion 12. Is formed between the fitting portion 17 and the sliding support portion 18, and the fitting portion 17 and the sliding support portion are slidably supported. It has the connection part 19 which connects the part 18.
- the sliding support part 18 supports the valve part 10 so that sliding is possible via the sliding member 20 formed with the material excellent in the low friction property and sliding property arrange
- the valve portion 10 may be directly slidably supported.
- a coil spring 14 is disposed on the outer peripheral surface on the other end side of the connecting portion 19 of the sliding support portion 18.
- an abutting portion 21 with which the coil spring 14 abuts is attached to the other end portion of the valve portion 10.
- the abutting portion 21 is formed in a cylindrical shape, and the other end portion of the valve portion 10 is inserted therein, and is detachably attached to the other end portion of the valve portion 10 by a fixing member 22 such as a wedge member. ing.
- a fixing member 22 such as a wedge member.
- the contact part 21 moves in the main body part 12 as the valve part 10 moves along the axial direction of the main body part 12.
- a flange portion 23 is formed on the outer peripheral surface of the contact portion 21 so as to project outward in the radial direction of the contact portion 21.
- the abutting portion 21 has a coil spring 14 disposed on the outer peripheral surface on one end side of the flange portion 23. Note that the contact portion 21 may be attached by bonding, welding, or the like without using the fixing member 22.
- the coil spring 14 is, for example, a coil spring, and is disposed on the outer peripheral surface of the sliding support member 16 of the main body 12 and the outer peripheral surface of the contact portion 21 of the valve portion 10.
- the portion is abutted with the other end surface 19 a of the connecting portion 19 of the main body portion 12, and the other end portion is abutted with one end surface 23 a of the flange portion 23 of the abutting portion 21, and is disposed on one end side with respect to the valve seat 13.
- the valve portion 10 is urged toward the other end side of the main body portion 12 so that the valve body 11 contacts the valve seat 13.
- the total length of the coil spring 14 is formed to be at least shorter than the stroke length of the valve body 11 (valve portion 10) when it is equal to or less than the free length.
- the total length L ⁇ b> 1 of the coil spring 14 is such that the valve body 11 and the valve seat 13 are in contact with each other in the closed state 19 a of the connecting portion 19 and the flange portion 23 of the contact portion 21.
- the total length L3 of the coil spring 14 is shorter than L1, and is shorter than the stroke length L2 (fixed value).
- the total length L1 of the coil spring 14 is 155 mm
- the stroke length L2 is 161 mm.
- the coil spring 14 faces the valve portion 10 toward the other end side of the main body portion 12 as shown in FIG. It is not energized (even towards one end). At this time, the free length of the coil spring 14 is equal to the total length L1 and smaller than the stroke length L2.
- the total length L1 of the coil spring 14 is equal to or less than the free length. When the total length L1 of the coil spring 14 is separated so as to be smaller than the free length, the coil spring 14 biases the valve portion 10 toward the other end side of the main body portion 12.
- the valve element 11 is moved to the closed state when the total length L1 of the coil spring 14 is equal to the free length, that is, when the elastic force from the coil spring 14 is 0, so that the valve body 11 is closed.
- the impact at the time of abutting on can be minimized.
- the total length (height at the allowable load) L3 when the coil spring 14 is bent to the maximum in the compression direction is the other end surface 19a of the connecting portion 19 and the other end surface 16a of the sliding support member 16. It is formed to be longer than the guide length L4 between.
- the cone valve 1 having the above-described configuration is resistant to the urging force of the coil spring 14 when a fluid pressurized to a predetermined value or more is fed from the other end side of the main body 12 toward the one end side.
- the valve body 11 is pushed up to one end side of the main body portion 12, the valve body 11 is separated from the valve seat 13, and the fluid is directed from the other end region 15 a on the other end side of the main body portion 12 toward the one end region 15 b on one end side. Shed.
- the cone valve 1 is configured such that the valve body 11 is moved to the other end side of the main body portion 12 while being assisted by the coil spring 14 when the pressure at one end side of the main body portion 12 is larger or larger than the other end side.
- the valve body 11 is brought into contact with the valve seat 13.
- the insertion portion 15 is covered with the valve body 11 to block the other end region 15a on the other end side of the main body portion 12 and the one end region 15b on the one end side, and the fluid is transferred from the one end region 15b of the main body portion 12 to the other end. Backflow toward the end region 15a is prevented.
- the present inventors presume the cause of the malfunction of the cone valve, that is, the cause that the valve seat or the valve body is worn and the upstream side and the downstream side of the cone valve communicate with each other as follows.
- the cone valve changes from the open state to the closed state, the abrasive particles inevitably contained in the slurry are caught in the gap between the valve seat and the valve body, so either the valve seat or the valve body Scratches on the surface.
- the scratch gradually grows by opening and closing repeatedly (about 1908 times / Hr when the stroke is 60%), and the scratch can flow back to the slurry at a certain point.
- the present inventors presume that the larger the initial scratches are, the shorter the period until parts replacement is necessary (hereinafter sometimes referred to as the life), and the cause of the increased scratches is the strong strength of the coil spring. I found out. That is, when the highly wearable particles are sandwiched when the cone valve is closed, if the coil spring is too strong, the degree of damage becomes deeper and worsens.
- the strength of the coil spring has been set to a relatively strong level in order to minimize the backflow.
- the inventors have moved the valve body 11 by inertia until the cone valve is closed. It was found that the backflow can be suppressed. Therefore, the present inventors have come to the conclusion that it is sufficient if the function of the coil spring in this cone valve can prevent sticking due to catching.
- the cone valve 1 reduces the total impact L1 of the coil spring 14 to be shorter than the stroke length L2 of the valve body 11, so that even if coarse particles are caught when the cone valve 1 is closed, the impact at that time is reduced.
- damage to the valve body 11 or the valve seat 13 that triggers uneven wear can be prevented and the degree of scratches can be mitigated, so that the life can be maintained two to three times the conventional life. .
- the stroke length refers to the length of the space in which the coil spring 14 in FIG. 3 is incorporated.
- the coil spring 14 is fitted between a stroke length (for example, 161 mm) shorter than a natural length (for example, 188 mm).
- a stroke length for example, 161 mm
- a natural length for example, 188 mm
- the natural length of the coil spring 14 is shorter than the stroke length (for example, 155 mm). Therefore, the repulsive force does not work, and even if coarse particles are sandwiched when the cone valve is closed, the impact can be reduced by the repulsive force.
- the present inventors have found that the malfunction of the cone valve, that is, the valve seat or the valve body is worn and the upstream side and the downstream side of the cone valve communicate with each other due to repeated reciprocation of the valve body. It was discovered that one of the cracks generated at the outer edge of the valve seat due to the accumulation of residual stress due to impact on the valve seat.
- valve seat 13 faces the upper side in order to relieve the impact from the valve body 61 of the valve portion 60 that reciprocates repeatedly in the vertical direction.
- the extended version is used.
- valve seat 13 If the valve seat 13 is expanded toward the upper side as described above, wear resistance is generated between the contact surface 61a of the valve body 61 and the contact slope 13a of the valve seat 13, as shown in FIG. 6A.
- the center side of the contact slope 13a of the valve seat 13 is worn by the coarse particles as shown in FIG. The gap on the center side increases.
- the contact slope 13a and the valve body 61 come into contact with each other as shown in FIG. 6C, and the contact slope 13a is thin. Cracks start from the upper end of the outer edge.
- the valve seat 13 is configured so as to be thick from the portion that contacts the end portion 11 a of the valve body 11 toward the center side (inside). Even if the gap is enlarged, the abutting part is not moved so much.
- the end surface of the valve body 11 is configured such that the side surface serving as the end portion 11 a of the valve body 11 is bent and separated from the contact slope 13 a of the valve seat 13.
- the risk that the valve seat 13 is damaged is reduced by preventing the side surface that becomes the portion 11a from hitting the contact slope 13a of the valve seat 13.
- the bending direction is preferably the reciprocating direction of the valve body 11 or closer to the center side (inner side) than the reciprocating direction. As a result, the risk of the valve seat 13 being damaged can be reduced even when the valve body 11 and the valve seat 13 are worn by the opening / closing operation (reciprocating motion).
- the outer diameter of the end portion 11a of the valve body 11 serving as a disc-shaped portion is reduced from the conventional outer diameter (246 mm) so that the outer diameter becomes 226 to 236 mm. Since the thickness at the point of contact with the contact slope 13a can be easily secured, the occurrence of cracks from the upper end side of the valve seat 13 expanded toward the upper side can be suppressed.
- the cone valve 1 can be suitably applied as long as it is a slurry containing coarse particles having a high wear resistance (particle maximum diameter is 1 to 2 mm).
- an ore slurry obtained by treating nickel oxide ore can be applied more effectively, and thus has an extremely large industrial value.
- the valve body 11 is disposed on one end side with respect to the valve seat 13, the coil spring 14 is disposed on the other end side, and the valve body 11 and the coil spring 14 are disposed on the valve seat 13.
- the valve body 41 and the coil spring 44 are disposed in the same direction with respect to the valve seat 43.
- the cone valve 31 includes at least a valve portion 40 having a valve body 41, a main body portion 42 having a valve seat 43, and the valve body 41 in contact with the valve seat 43. And a coil spring 44 incorporated therein.
- the valve portion 40 includes cylindrical first and second rod members 40a and 40b, and first and second rod members 40a between the first and second rod members 40a and 40b. , 40b and a valve body 41 projecting outward in the radial direction.
- the first rod member 40 a is slidably accommodated in the first guide portion 46 of the main body 42 while the valve body 41 is disposed on one end side of the main body 42 relative to the valve seat 43.
- the second bar member 40b is slidably accommodated in the second guide portion 47 of the main body portion 42, and is accommodated in the main body portion 42 so as to be movable along the axial direction of the main body portion 42. .
- the main body portion 42 has an insertion portion 45 in which the slurry is inserted and the valve portion 40 is accommodated, and is formed in a cylindrical shape.
- the insertion portion 45 is formed in a substantially L shape so as to communicate a bottom surface opening 45 c formed on the bottom surface 42 b of the main body 42 and a side surface opening 45 d formed on the side surface.
- a valve seat 43 that protrudes toward the inside in the radial direction of the main body 42 and contacts the valve body 41 is formed in the middle portion of the insertion portion 45 on the bottom surface 42 b side. The part of the valve body 41 that is in line contact with the valve seat 43 becomes an annular contact surface so as to prevent the slurry from moving in the closed state.
- valve seat 43 is provided with an annular contact surface by contact with the end 41 a of the valve body 41.
- the “contact surface” referred to here intersects the valve body 41 when extended, but when the valve body 41 is divided by the extended contact surface, the valve body 41 on the side in contact with the contact surface becomes the end 41a.
- the valve seat 43 in order to ensure durability against an impact from the valve body 41 that repeatedly opens and closes, the valve seat 43 has a portion that contacts the end 41a of the valve body 41 as shown in FIG. Constructed in thickness. Specifically, the valve seat 43 is configured such that the thickness of the portion that contacts the end 41a of the valve body 41 increases from the top side of the valve seat 43 toward the middle side. ing.
- the “thickness” mentioned here is defined in the normal direction of the contact surface with the end 41a of the valve body 41.
- valve body 41 When the valve body 41 is repeatedly opened and closed, the valve body 41 and the valve seat 43 are worn, and the contact surface itself moves to the inner peripheral side. For this reason, in this embodiment, it is set as the structure provided with the thick part inside the contact surface at the time of a new article in anticipation of the movement to the inner peripheral side of this contact surface itself. This makes it possible to withstand impacts in the future.
- the thickness of the thick portion of the valve seat 43 is, for example, 20 to 40 mm.
- the surface of the valve body 41 is bent from the outermost periphery of the contact surface to the outside of the surface (from the outermost periphery of the contact surface toward the inner side). It can be the reciprocating direction, or it can be closer to the inner periphery of the contact surface than the reciprocating motion, that is, the inner side direction of the contact surface from the reciprocating direction of the valve element 41. As a result, the diameter of the valve element 41 does not increase in the vicinity of the contact surface, and thus the increase in the outer diameter of the contact surface can be prevented.
- a cylindrical first guide portion 46 that slidably supports the valve portion 40 is formed on the bottom surface 42 b side of the main body portion 42.
- the first guide portion 46 is disposed in the other end region 45a on the other end side of the main body portion 42 through a connecting portion (not shown) and the like, and is coaxial with the central axis of the bottom surface opening 45c of the main body portion 42.
- the first rod member 40a is inserted inside and supports the valve portion 40 so as to be slidable.
- a cylindrical second guide portion 47 that slidably supports the valve portion 40 is formed on the inner wall surface of the upper surface 42 c of the main body portion 42.
- the second guide portion 47 is disposed in one end region 45b on the one end side of the main body portion 42 and is disposed coaxially with the first guide portion 46, and the second rod member 40b is inserted into the valve portion so that the valve The part 40 is slidably supported.
- a coil spring 44 is disposed on the outer peripheral surface of the second guide portion 47.
- the coil spring 44 is, for example, a coil-shaped spring, and is disposed on the outer peripheral surface of the second guide portion 47 of the main body portion 42, and one end portion thereof is connected to the inner wall surface of the upper surface 42 c of the main body portion 42.
- the valve portion 40 is placed in the main body so that the other end portion is in contact with the valve body 41 of the valve portion 40 and the valve body 41 disposed on one end side with respect to the valve seat 43 is in contact with the valve seat 43.
- the portion 42 is biased toward the other end side.
- the total length of the coil spring 44 is formed to be at least shorter than the stroke length of the valve body 41 (valve portion 40) when it is equal to or less than the free length.
- the total length L31 of the coil spring 44 is such that the inner wall surface of the upper surface 42c of the main body portion 42 and the valve body of the valve portion 40 in the closed state in which the valve body 41 and the valve seat 43 are in contact. It is formed so as to be shorter than the stroke length L32 which is a length between 41 and 41. As shown in FIG. 8, in the open state in which the valve element 41 is separated from the valve seat 43, the total length L33 of the coil spring 44 is shorter than L31, and therefore shorter than the stroke length L32 (fixed value). As an example, the total length L31 of the coil spring 44 is 155 mm, and the stroke length L32 is 161 mm.
- the coil spring 44 When the valve body 41 is close to the valve seat 43 or in the closed state in which the valve body 41 is in contact, the coil spring 44 has the valve portion 40 directed toward the other end side of the main body portion 42 as shown in FIG. No bias (even towards one end). At this time, the free length of the coil spring 44 is equal to the total length L31 and smaller than the stroke length L32. On the other hand, in the open state in which the valve element 41 is separated from the valve seat 43, the total length L31 of the coil spring 44 is equal to or less than the free length, as shown in FIG. When the total length L31 of the coil spring 44 is separated to a degree smaller than the free length, the coil spring 44 biases the valve portion 40 toward the other end side of the main body portion 42.
- valve element 41 is moved to the closed state when the entire length L 31 of the coil spring 44 is equal to the free length, that is, when the elastic force from the coil spring 44 is 0, so that the valve body 41 is closed to the valve seat 43.
- the impact at the time of abutting on can be minimized.
- the total length (height at the allowable load) L33 when the coil spring 44 is bent to the maximum in the compression direction is the inner wall surface of the upper surface 42c of the main body portion 42 and the second guide portion 47. It is formed to be longer than the length L34 between the other end surface 47a.
- the cone valve 31 according to the other embodiment of the present invention adds more than a predetermined value from the other end side to the one end side of the main body portion 42 in the same manner as the cone valve 1 according to the embodiment of the present invention.
- the valve body 41 When the pressurized fluid is fed, the valve body 41 is pushed up to one end side of the main body 42 against the urging force of the coil spring 44, the valve body 41 is separated from the valve seat 43, and the fluid is supplied to the main body. It flows from the other end region 45a on the other end side of 42 toward the one end region 45b on the one end side.
- the cone valve 31 is assisted by the coil spring 44 when the pressure on one end side of the main body 42 is larger or larger than the other end side, like the cone valve 1 according to the embodiment of the present invention.
- the valve body 41 is pushed down to the other end side of the main body 42 to bring the valve body 41 into contact with the valve seat 43.
- the insertion portion 45 is covered with the valve body 41 to block the other end region 45a on the other end side of the main body portion 42 from the one end region 45b on the one end side, and the fluid is transferred from the one end region 45b of the main body portion 42 to the other end. Backflow toward the end region 45a is prevented.
- the entire length L31 of the coil spring 44 is shorter than the stroke length L32 of the valve body 41, like the cone valve 1 according to the embodiment of the present invention.
- the valve seat 43 is located on the center portion side from the portion in contact with the end 41a of the valve body 41. By forming the wall thickness toward the (inner side), the contacted portion does not move much even if the gap is enlarged.
- the side surface which becomes the end 41a of the valve element 41 is configured to be bent away from the contact slope 43a of the valve seat 43. For this reason, since the side surface used as the edge part 41a of the valve body 41 does not contact
- the bending direction is preferably the reciprocating direction of the valve body 41 or closer to the center side (inside) than the reciprocating motion. As a result, the risk of the valve seat 43 being damaged can be reduced even when the valve body 41 and the valve seat 43 are worn by the opening / closing operation (reciprocating motion).
- the outer diameter which is the maximum diameter of the end portion 41a of the valve body 41, which is a disc-shaped portion, is reduced from the conventional one so as to be 226 to 236 mm. Since the thickness at the contact point can be easily secured, the occurrence of cracks from the upper end side of the valve seat 43 expanded toward the upper side can be suppressed.
- the cone valve 31 according to another embodiment of the present invention may be a slurry containing coarse particles (particle maximum diameter of 1 to 2 mm) with high wear resistance, similar to the cone valve 1 according to one embodiment of the present invention. In this case, it can be suitably applied. In particular, an ore slurry obtained by treating nickel oxide ore can be applied more effectively, and thus has an extremely large industrial value.
- Example 1 The cone valves of Example 1, Example 2, Reference Example 1, Reference Example 2, and Comparative Example 1 below are installed in a liquid delivery device as shown in FIG. It was.
- Example, Reference Example Free length 155 mm (Comparative example): Free length 188mm
- Reference Example 2 In Reference Example 2, Reference Example 1 except that the shape of the portion where the valve body (outer diameter 246 mm) and the valve seat of the main body contact with each other as shown in FIG. A cone valve having the same configuration as that shown in FIG. 1 was installed in a liquid feeding apparatus as shown in FIG. As a result, the cone valve of Example 2 did not fail even after 968 hours of operation.
- Example 1 In the first embodiment, the portion of the valve seat as shown in FIGS. 2, 3 and 4 that contacts the end of the valve body is configured to be thick, and the side surface of the end of the valve body extends in the vertical direction.
- Example 2 In Example 2, except that the outer diameter of the valve body is 226 mm, a cone valve having the same configuration as in Example 1 is installed in the liquid feeding device as shown in FIG. Liquid. As a result, the cone valve of Example 2 did not fail even after 1151 hours of operation. When the cone valve was removed and the state of the worn part was confirmed, deep cracks were fewer than in Reference Examples 1 and 2.
- Comparative Example 1 In Comparative Example 1, except that the sizes of the coil springs were different, a cone valve having the same configuration as in Reference Example 1 was installed in a liquid feeding device as shown in FIG. As a result, the cone valve of Comparative Example 1 was forced to be replaced because the slurry flowed back in 200 hours and could not be fed.
- the portion where the valve seat abuts against the end of the valve body is made thick, and the side surface that becomes the end of the valve body is separated from the contact slope of the valve seat, thereby further increasing the length of the cone valve. It was found that the life could be extended.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Check Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
まず、本発明の一実施形態に係るコーンバルブの使用態様について、図面を使用しながら説明する。図1は、本発明の一実施形態に係るコーンバルブの使用例を示した概要図である。
本発明の一実施形態に係るコーンバルブ1では、弁体11が弁座13に対して一端側に配置され、コイルバネ14が他端側に配置され、弁体11及びコイルバネ14が弁座13に対して互いに異なる方向に配置されていたが、本発明の他の実施形態のコーンバルブ31では、弁体41及びコイルバネ44が弁座43に対して同方向に配置されている。
・スラリー 固形分 :ニッケル酸化鉱石
(最大粒径1~2mmとしたスラリー)
固形分濃度:30質量%
・スラリー送液量 約240m3/Hr(60%ストローク運転時、2台運転)
・コーンバルブのストローク長 :161mm
(実施例、参考例):自由長 155mm
(比較例):自由長 188mm
参考例1では、弁部の弁体(外径246mm)の本体部の弁座と接触する接触面の形状が断面視するとそれぞれ曲線的で湾曲したコーンバルブを、図1に示すような送液装置に設置して、前述したスラリーを送液した。その結果、参考例1のコーンバルブは、645時間の操業を経ても不具合は発生しなかった。
参考例2では、図5に示すような弁部の弁体(外径246mm)と本体部の弁座とが接触する部分の形状が断面視するとそれぞれ直線的で平坦な以外は、参考例1と同様の構成を有するコーンバルブを、図1に示すような送液装置に設置して、前述したスラリーを送液した。その結果、実施例2のコーンバルブは、968時間の操業を経ても不具合は発生しなかった。
実施例1では、図2、3、及び4に示すような弁座の弁体の端部と当接する部位が肉厚に構成され、かつ、弁体の端部が鉛直方向に延在する側面として形成されて弁座の当接斜面に対して離間した構成として、その外径が236mmであること以外は、参考例2と同様の構成を有するコーンバルブを、図1に示すような送液装置に設置して、前述したスラリーを送液した。その結果、実施例1のコーンバルブは、1331時間の操業を経ても不具合は発生しなかった。コーンバルブを取り外して摩耗部の状態を確認したところ、参考例1及び2よりも、深い亀裂が少なかった。
実施例2では、弁体の外径が226mmであること以外は、実施例1と同様の構成を有するコーンバルブを、図1に示すような送液装置に設置して、前述したスラリーを送液した。その結果、実施例2のコーンバルブは、1151時間の操業を経ても不具合は発生しなかった。コーンバルブを取り外して摩耗部の状態を確認したところ、参考例1及び2よりも、深い亀裂が少なかった。
比較例1では、コイルバネのサイズが異なる以外は、参考例1と同様の構成を有するコーンバルブを、図1に示すような送液装置に設置して、前述したスラリーを送液した。その結果、比較例1のコーンバルブは、200時間でスラリーが逆流して送液できなくなり、交換を余儀なくされた。
Claims (5)
- スラリーを送液する際に逆止弁として使用されるコーンバルブであって、
弁座と、
前記弁座に対して所定の方向に往復動して開閉動作をする弁体と、
前記弁体を前記弁座と接触するように組み込まれたコイルバネとを備え、
前記弁座には、前記弁体の端部との接触により環状の当接面が得られ、
前記弁座は、前記当接面より内側に向けて該当接面の法線方向の厚さが増大する肉厚な部分を有する構成となっていることを特徴とするコーンバルブ。 - 前記弁体の端部は、前記当接面の最外周で前記当接面から離間するように屈曲して側面が形成され、該側面の屈曲方向は、前記弁体の往復動方向、又は該往復動方向よりも前記当接面の内側方向であることを特徴とする請求項1に記載のコーンバルブ。
- 前記弁体の端部は、円盤状に形成され、その最大直径が226~236mmであることを特徴とする請求項1に記載のコーンバルブ。
- 前記コイルバネの全長は、自由長以下の場合に、少なくとも前記弁体のストローク長よりも短いことを特徴とする請求項1に記載のコーンバルブ。
- 前記スラリーは、ニッケル酸化鉱石のスラリーであることを特徴とする請求項1乃至4の何れか1項に記載のコーンバルブ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2016406944A AU2016406944A1 (en) | 2016-05-16 | 2016-06-10 | Cone valve |
CA3001439A CA3001439A1 (en) | 2016-05-16 | 2016-06-10 | Cone valve |
JP2016565082A JP6086177B1 (ja) | 2016-05-16 | 2016-06-10 | コーンバルブ |
US15/764,046 US20180283568A1 (en) | 2016-05-16 | 2016-06-10 | Cone valve |
EP16902470.0A EP3366962A4 (en) | 2016-05-16 | 2016-06-10 | CONE VALVE |
PH12018501867A PH12018501867A1 (en) | 2016-05-16 | 2018-09-03 | Cone valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016097732 | 2016-05-16 | ||
JP2016-097732 | 2016-05-16 |
Publications (1)
Publication Number | Publication Date |
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WO2017199451A1 true WO2017199451A1 (ja) | 2017-11-23 |
Family
ID=60326345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2016/067346 WO2017199451A1 (ja) | 2016-05-16 | 2016-06-10 | コーンバルブ |
Country Status (6)
Country | Link |
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US (1) | US20180283568A1 (ja) |
EP (1) | EP3366962A4 (ja) |
AU (1) | AU2016406944A1 (ja) |
CA (1) | CA3001439A1 (ja) |
PH (1) | PH12018501867A1 (ja) |
WO (1) | WO2017199451A1 (ja) |
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JP7522432B2 (ja) | 2020-04-14 | 2024-07-25 | 株式会社テイエルブイ | 逆止弁 |
Families Citing this family (1)
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CN115595450B (zh) * | 2022-08-05 | 2023-11-24 | 昆明理工大学 | 一种硫化锌浸渣处理脱硫回收银的装置 |
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Also Published As
Publication number | Publication date |
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PH12018501867A1 (en) | 2019-05-15 |
US20180283568A1 (en) | 2018-10-04 |
EP3366962A4 (en) | 2019-05-22 |
AU2016406944A1 (en) | 2018-05-10 |
EP3366962A1 (en) | 2018-08-29 |
CA3001439A1 (en) | 2017-11-23 |
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