US20220193751A1 - Method of manufacturing plunger pump and plunger pump - Google Patents

Method of manufacturing plunger pump and plunger pump Download PDF

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Publication number
US20220193751A1
US20220193751A1 US17/440,348 US202017440348A US2022193751A1 US 20220193751 A1 US20220193751 A1 US 20220193751A1 US 202017440348 A US202017440348 A US 202017440348A US 2022193751 A1 US2022193751 A1 US 2022193751A1
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United States
Prior art keywords
cylinder
inner cylinder
outer cylinder
plunger pump
preparation
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Pending
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US17/440,348
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English (en)
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Keiichi Sano
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Jokoh Co Ltd
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Jokoh Co Ltd
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Assigned to JOKOH CO., LTD. reassignment JOKOH CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SANO, KEIICHI
Publication of US20220193751A1 publication Critical patent/US20220193751A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • F04B53/168—Mounting of cylinder liners in cylinders

Definitions

  • the present disclosure relates to a method of manufacturing a plunger pump and a plunger pump.
  • pulverizer units used to pulverize and homogenize a preparation include pulverizer units.
  • Japanese Patent No. 3149371 discloses a configuration including a pulverizer formed with an internal pulverization flow path. A preparation fed from a container is fed into and passed through the pulverization flow path of the pulverizer by a high pressure pump in order to homogenize the preparation.
  • a cylinder configuring the pump may be subject to deterioration fatigue due to the pump applying pressure to the preparation.
  • an object of the present disclosure is to provide a method of manufacturing a plunger pump that improves the durability of a pump with respect to internal pressure from a preparation, and a plunger pump manufactured using this method of manufacturing.
  • a method of manufacturing a plunger pump is a method of manufacturing a plunger pump for connection to a pulverizer.
  • the pulverizer includes a pulverization flow path through which a preparation is passed in order to pulverize the preparation, and the plunger pump is configured to feed the preparation into the pulverizer under high pressure and is configured from an outer cylinder and an inner cylinder formed with a circular tube-shaped pressure chamber.
  • the method includes a temperature difference generation process of generating a difference in temperature with respect to a normal temperature state for either one of the outer cylinder or the inner cylinder, a cylinder insertion process of inserting the inner cylinder inside the outer cylinder in a state in which the inner cylinder has a smaller outer diameter than an inner diameter of the outer cylinder as a result of the temperature difference generated by the temperature difference generation process, an elimination process of eliminating the generated temperature difference, and a plunger placement process of placing a circular tube-shaped plunger in the pressure chamber of the inner cylinder so as to enable of reciprocating motion by the plunger.
  • the method of manufacturing described above may be configured such that the temperature difference generation process includes a heating process of heating the outer cylinder, in the cylinder insertion process, the inner cylinder is inserted into the outer cylinder in a state in which the inner diameter of the outer cylinder has become larger than the outer diameter of the inner cylinder, and the elimination process includes a cooling process of cooling the outer cylinder.
  • the method of manufacturing described above may be configured such that the temperature difference generation process includes a cooling process of cooling the inner cylinder, in the cylinder insertion process, the inner cylinder is inserted into the outer cylinder in a state in which the outer diameter of the inner cylinder has become smaller than the inner diameter of the outer cylinder, and the elimination process includes a heating process of heating the inner cylinder.
  • the method of manufacturing described above may be configured such that the temperature difference generation process includes a heating process of heating the outer cylinder, and a cooling process of cooling the inner cylinder, in the cylinder insertion process, the inner cylinder is inserted into the outer cylinder in a state in which the inner diameter of the outer cylinder has become larger than the outer diameter of the inner cylinder, and the elimination process includes a cooling process of cooling the outer cylinder, and a heating process of heating the inner cylinder.
  • the method of manufacturing described above may be configured such that the inner cylinder is press-fitted inside the outer cylinder in the cylinder insertion process.
  • a plunger pump for connection to a pulverizer, the pulverizer including a pulverization flow path through which a preparation is passed in order to pulverize the preparation, and the plunger pump being configured to feed the preparation into the pulverizer under high pressure.
  • the plunger pump includes an outer cylinder, an inner cylinder that is inserted inside the outer cylinder and that is formed with a circular tube-shaped internal pressure chamber, and a circular tube-shaped plunger that is placed in the pressure chamber of the inner cylinder so as to be capable of reciprocating motion.
  • the inner cylinder is configured so as to be compressed by the outer cylinder.
  • the method of manufacturing the plunger pump of the present disclosure is used to manufacture the plunger pump including the cylinder configured from the outer cylinder and the inner cylinder. Placing either the outer cylinder or the inner cylinder at a different temperature to a normal temperature state causes a change in size. While the size is changed, the inner cylinder is inserted into the outer cylinder. On returning to the normal temperature state, the cylinder can thereby be configured in a state in which the outer cylinder constantly applies external pressure to the inner cylinder. Internal pressure from the preparation passing through the cylinder under high pressure can accordingly be counteracted, enabling metal fatigue in the cylinder configuring the plunger pump to be suppressed.
  • FIG. 1 is a conceptual diagram illustrating an example of configuration of a pulverizer unit.
  • FIG. 2 is a cross-section illustrating a structure of an orifice homogenizer.
  • FIG. 3A to FIG. 3C are radial direction cross-sections of an orifice homogenizer.
  • FIG. 4 is an enlarged illustration of a plunger pump.
  • FIG. 5 is a flowchart illustrating a method of manufacturing a plunger pump.
  • FIG. 6A to FIG. 6D illustrate manufacturing processes of a plunger pump.
  • FIG. 7A to FIG. 7C illustrate manufacturing processes of a plunger pump as a continuation from FIG. 6D .
  • FIG. 8 is a flowchart illustrating an alternative method of manufacturing a plunger pump.
  • FIG. 9A to FIG. 9D illustrate alternative manufacturing processes of a plunger pump.
  • FIG. 10A to FIG. 10C illustrate alternative manufacturing processes of a plunger pump as a continuation from FIG. 9D .
  • FIG. 1 is a conceptual diagram schematically illustrating an example of configuration of a pulverizer unit 1 in which a plunger pump is employed.
  • the pulverizer unit 1 is a homogenizer unit used to pulverize and homogenize a preparation.
  • the pulverizer unit 1 includes a pulverizer 10 , a feed hopper 30 , a collection hopper 31 , and pipes 40 , 41 , 42 , 43 that connect these elements together.
  • the pulverizer 10 includes a pulverization flow path.
  • the preparation is pulverized by passing the preparation through the interior of the pulverization flow path.
  • the pulverizer 10 may also be referred to as an orifice homogenizer, or simply an orifice. Detailed explanation follows regarding the structure of the pulverizer 10 , with reference to FIG. 2 and FIG. 3 .
  • FIG. 2 is a vertical cross-section of the pulverizer 10 .
  • FIG. 3A is a cross-section along line A-A in FIG. 2
  • FIG. 3B is a cross-section along line B-B in FIG. 2
  • FIG. 3C is a cross-section along line C-C in FIG. 2 .
  • the pulverizer 10 is formed of a first block 21 , a second block 22 , and a third block 23 interposed between the first block 21 and the second block 22 .
  • Plural flow channels 11 , 12 are formed in the first block 21 (see FIG. 2 and FIG. 3A ).
  • plural flow channels 18 , 19 are formed in the second block 22 .
  • a first void 14 is intentionally formed at joined faces of the first block 21 and the third block 23 .
  • the first void 14 forms a merging area 13 where the plural flow channels 11 , 12 merge into one (see FIG. 2 and FIG. 3B ).
  • the third block 23 is on the opposite side of the merging area 13 (first void 14 ) to the flow channels 11 , 12 in the flow path direction.
  • An orifice flow channel 15 is formed inside the third block 23 (see FIG. 2 and FIG. 3C ).
  • a second void 16 is intentionally formed at joined faces of the third block 23 and the second block 22 at a downstream side of the orifice flow channel 15 .
  • the orifice flow channel 15 branches at the second void 16 , forming a junction 17 that is connected to the plural flow channels 18 , 19 .
  • the pulverization flow path is configured by the flow channels 11 , 12 , the orifice flow channel 15 , and the flow channels 18 , 19 .
  • Each of the flow channels 11 , 12 and the flow channels 18 , 19 has the same internal diameter (D 1 ), this being larger than an internal diameter (D 2 ) of the orifice flow channel 15 .
  • the internal diameter (D 1 ) is five to seven times as large as the internal diameter (D 2 ).
  • the size (D 3 ) of the first void 14 is set so as to be the same as the internal diameter (D 1 ).
  • the orifice flow channel 15 therefore configures a reduced diameter flow channel.
  • a preparation configured by a processing target material dispersed in an organic solvent enters the merging area 13 (the first void 14 ) via the flow channels 11 , 12 .
  • the orifice flow channel 15 is narrower than the flow channels 11 , 12 , the flow rate of the preparation is reduced by the orifice flow channel 15 .
  • the processing target material present in the preparation is broken up by the energy of these collisions. In this manner, as the preparation flows from the flow channels 11 , 12 into the orifice flow channel 15 , repeated collisions between the processing target material in the preparation causes the preparation to be ground down.
  • flow channels 11 , 12 and two of the flow channels 18 , 19 are formed in the drawings, at least one the flow channels 11 , 12 and at least one of the flow channels 18 , 19 would be sufficient as long as the preparation is able to flow. However, in order to promote collisions between the processing target material in the preparation, it is preferable to form two or more of the flow channels 11 , 12 and two or more of the flow channels 18 , 19 .
  • the feed hopper 30 feeds the preparation into the pulverization flow path.
  • the feed hopper 30 is provided at the furthermost upstream side of the pulverization flow path, and is connected to a valve 71 via the pipe 40 as illustrated.
  • the feed hopper 30 is filled with preparation that has not yet been pulverized, and preparation that has not yet been sufficiently pulverized after passing along the pulverization flow path, as illustrated by the arrow in FIG. 1 . Note that the transfer from the collection hopper 31 to the feed hopper 30 is not illustrated in detail in FIG. 1 .
  • the collection hopper 31 is a container from which the preparation is collected once the preparation has been completely homogenized.
  • the pulverizer unit 1 does not necessarily have to include (may be configured with) the collection hopper 31 , and homogenized preparation may be collected from a drain 86 or the like via the pipe 42 .
  • FIG. 1 illustrates a configuration in which both the collection hopper 31 and the drain 86 are provided.
  • a plunger pump 51 is connected to both the valve 71 and the pulverizer 10 through the pipe 41 . Opening the valve 71 allows the preparation to flow from the feed hopper 30 into the pipe 41 . Closing the valve 71 enables the preparation from the feed hopper 30 to be prevented from flowing into the pipe 41 , and also enables preparation that has been pumped out from the plunger pump 51 to be prevented from flowing back toward the feed hopper 30 .
  • the plunger pump 51 is configured by a cylinder 51 A and a plunger 51 B.
  • the inside of the cylinder is filled with the preparation, and the preparation inside the cylinder is expelled from the cylinder, by reciprocating motion of the plunger inside the cylinder.
  • FIG. 4 is an enlarged illustration of the plunger pump 51 .
  • FIG. 4 is a partial cross-section conceptually illustrating the plunger pump.
  • FIG. 4 is an enlarged schematic diagram of the plunger pump 51
  • plunger pumps illustrated in FIGS. 7C and 10C also have a similar structure.
  • the cylinder 51 A is configured of an inner cylinder 51 a and an outer cylinder 51 b .
  • the cylinder 51 A has a double-layered structure.
  • the cylinder 51 A is configured in a state in which the inner cylinder 51 a is constantly applied with external pressure from the outer cylinder 51 b .
  • the inner cylinder 51 a is configured by a member that has a larger outer diameter than an inner diameter of the outer cylinder 51 b in a state in which the inner cylinder 51 a has not been inserted into the outer cylinder 51 b .
  • the cylinder 51 A is configured in a state in which the inner cylinder 51 a is compressed by the outer cylinder 51 b .
  • the inner cylinder 51 a is preferably configured of a material with a greater hardness (that is harder) than the outer cylinder 51 b .
  • SUS630 may be employed for the inner cylinder 51 a , although there is no limitation thereto.
  • the outer cylinder 51 b is preferably configured of a material that is somewhat softer than the inner cylinder 51 a , that has elastic properties, and that fulfills a function of constricting the inner cylinder 51 a .
  • SUS316 or the like may be employed for the outer cylinder 51 b , although there is no limitation thereto.
  • the plunger 51 B is inserted into and placed inside the cylinder 51 A so as to undergo reciprocating motion inside the cylinder 51 A.
  • the plunger 51 B undergoes reciprocating motion in the direction of the arrows in FIG. 4 due to rotation of a crank mechanism. This enables the plunger pump 51 to draw in the preparation from the pipe 41 , and to pump out the preparation into the pipe 41 .
  • a valve 73 and a valve 75 are also connected to the pulverizer 10 through the pipe 42 . Opening the valve 73 allows the preparation to flow from the pulverizer 10 into the pipe 43 . Closing the valve 73 enables preparation from the pulverizer 10 to be prevented from flowing out into the pipe 43 . Opening the valve 75 allows the preparation to flow out from the pulverizer 10 through the drain 86 . Closing the valve 75 enables the preparation to be prevented from flowing out from the pulverizer 10 toward the drain 86 .
  • the pipe 43 is connected to the valve 73 , and the pipe 43 is also connected to the collection hopper 31 .
  • a heat exchanger 80 may be provided to the pipe 43 .
  • the heat exchanger 80 has a function of removing heat in cases in which the preparation has warmed up as a result of the pulverization process by the pulverizer 10 .
  • the pulverizer unit 1 may also include a control section (not illustrated in the drawings) that controls the plunger pump 51 , opening and closing of the respective valves 71 , 73 , 75 , and so on.
  • a control section controls the plunger pump 51 and opening and closing of the respective valves 71 , 73 , 75 such that the preparation flows around the pulverization flow path of the pulverizer unit 1 in a loop until the preparation has reached a target particle size.
  • the processing target material is dispersed in an organic solvent in order to form the preparation. This dispersion is performed in the feed hopper 30 .
  • a wide variety of substances may be applied as the processing target material to be broken down, including cellulose, graphite, graphene, carbon nanotubes, or composite metal oxides (crystalline substances such as spinel or perovskite). Performing dispersal when breaking down results in greater uniformity of dispersion when mixing with a resin or the like. Enhanced material performance may be expected as a result.
  • valve 71 is opened and the plunger 51 B is pulled out from inside the cylinder 51 A, such that the preparation fills the inside of the cylinder 51 A of the plunger pump 51 .
  • the valve 71 is then closed, and the plunger 51 B is pushed into the cylinder 51 A in this state, such that the preparation is fed (pumped out under high pressure) into the pulverizer 10 through the pipe 41 .
  • the valve 73 is placed in an open state and the valve 75 is placed in a closed state at the timing at which the plunger 51 B is pushed in.
  • the pulverized (homogenized) preparation is fed into the collection hopper 31 through the pipe 42 , the valve 73 , and the pipe 43 .
  • heat of the preparation passing through the pipe 43 may be dissipated by the heat exchanger 80 as required.
  • the preparation fed into the collection hopper 31 is then fed back to the feed hopper 30 to undergo another round of pulverization processing.
  • the preparation is passed through the pulverization flow path plural times by repeating the above operation plural times. Namely, the preparation is pulverized plural times, and a homogenized preparation is achieved. Note that this processing may be executed by a control section provided to the pulverizer unit 1 , or executed by a control section configured to receive instructions from an operator.
  • the preparation fed into the collection hopper 31 may be collected, or the valve 73 may be placed in a closed state and the valve 75 placed in an open state at the timing at which the plunger 51 B is pushed in, in order to collect the preparation via the drain 86 .
  • FIG. 5 is a flowchart illustrating a method of manufacturing the plunger pump illustrated in FIG. 4 .
  • FIGS. 6A to 6D and FIGS. 7A to 7C illustrate the plunger pump being manufactured according to the procedure illustrated in FIG. 5 .
  • Explanation follows regarding the method of manufacturing the plunger pump 51 , with reference to FIG. 5 to FIG. 7C .
  • a temperature difference with respect to a normal temperature state is generated in either one of the outer cylinder 51 b or the inner cylinder 51 a , such that the size of the corresponding cylinder becomes larger (or smaller) than normal, and thereby allowing the inner cylinder 51 a to be inserted into the outer cylinder 51 b .
  • the outer cylinder 51 b is heated so as to expand in size, thereby allowing the inner cylinder 51 a to be inserted therein. Specific explanation follows regarding this.
  • the inner cylinder 51 a and the outer cylinder 51 b are prepared such that the outer diameter of the inner cylinder 51 a is equal to or greater than the inner diameter of the outer cylinder 51 b .
  • a material that undergoes thermal expansion is employed for the outer cylinder 51 b.
  • the prepared outer cylinder 51 b is then subjected to heating (step S 501 in FIG. 5 ). As illustrated in FIG. 6B , this heating is only performed with respect to the outer cylinder 51 b . During this heating, the outer cylinder 51 b is heated to a level that causes the outer cylinder 51 b to expand without suffering from heat damage. As illustrated by the arrows in FIG. 6C , the outer cylinder 51 b undergoes thermal expansion as a result of this heating. The inner diameter of the outer cylinder 51 b is enlarged (extended) as a result. This enables the inner cylinder 51 a to be easily press-fitted inside the outer cylinder 51 b.
  • FIG. 6D the inner cylinder 51 a is then inserted (press-fitted) into the outer cylinder 51 b that has undergone thermal expansion (see also step S 502 in FIG. 5 ).
  • FIG. 7A illustrates the cylinder 51 A in a state in which insertion of the inner cylinder 51 a into the outer cylinder 51 b is complete.
  • the outer cylinder 51 b is then subjected to cooling to return the expanded outer cylinder 51 b to its original state, namely a non-expanded state (see step S 503 in FIG. 5 , and FIG. 7B ).
  • this cooling is preferably natural cooling; however, there is no limitation thereto.
  • the outer cylinder 51 b may be cooled by artificial cooling, or may be cooled by natural cooling.
  • artificial cooling is to immerse the cylinder 51 A in a water-filled tank; however, any method may be employed as long as the outer cylinder 51 b can be cooled without damage.
  • the outer cylinder 51 b returns to its original dimensions as a result of being cooled.
  • the cylinder 51 A therefore has a structure in which the outer cylinder 51 b is constantly constricting the inner cylinder 51 a from the outside thereof.
  • the preparation flows inside the cylinder 51 A under high pressure.
  • This outward-acting pressure from the preparation on the cylinder has the potential to hasten metal fatigue of the cylinder.
  • external pressure from the outer cylinder 51 b acts on the inner cylinder 51 a .
  • the external pressure from the outer cylinder 51 b counteracts the internal pressure of the preparation flowing inside the inner cylinder 51 a , thereby spreading the pressure acting on the inner cylinder 51 a .
  • the cylinder 51 A is configured with a double-layered structure in which the outer cylinder 51 b applies external pressure to the inner cylinder 51 a , thereby enabling the ability of the cylinder 51 A to withstand the internal pressure from the preparation flowing inside to be improved in comparison to hitherto, and also enabling the degree of fatigue to be reduced in comparison to hitherto.
  • the plunger 51 B is inserted into the cylinder 51 A (see step S 504 in FIG. 5 , and FIG. 7C ).
  • the plunger pump 51 can be manufactured in the above manner.
  • the outer cylinder 51 b is heated and made to expand so as to allow insertion of the inner cylinder 51 a , after which the outer cylinder 51 b is cooled and returned to its original size such that external pressure acts on the inner cylinder 51 a .
  • a second exemplary embodiment describes an alternative example of a method of manufacturing the cylinder 51 A.
  • the outer cylinder 51 b is made larger than its normal size by being heated so as to allow insertion of the inner cylinder 51 a .
  • the inner cylinder 51 a is made smaller in size so as to enable insertion into the outer cylinder 51 b.
  • FIG. 8 is a flowchart illustrating the method of manufacturing the plunger pump 51 according to the second exemplary embodiment.
  • FIG. 9 and FIG. 10 illustrate the method of manufacturing set out in the flowchart illustrated in FIG. 8 .
  • the inner cylinder 51 a and the outer cylinder 51 b are prepared such that the outer diameter of the inner cylinder 51 a is equal to or greater than the inner diameter of the outer cylinder 51 b .
  • a material whose dimensions shrink when cooled is employed as the inner cylinder 51 a.
  • the prepared inner cylinder 51 a is then subjected to cooling (step S 801 in FIG. 8 ). As illustrated in FIG. 9B , the cooling is only performed on the inner cylinder 51 a . During this cooling, the inner cylinder 51 a is cooled to a level that causes the inner cylinder 51 a to contract without suffering damage (deterioration) as a result of the cooling. As illustrated by the arrows in FIG. 9C , the inner cylinder 51 a contracts as a result of this cooling. The outer diameter of the inner cylinder 51 a shrinks (becomes smaller) as a result. This enables the inner cylinder 51 a to be easily press-fitted inside the outer cylinder 51 b.
  • FIG. 10A illustrates the cylinder 51 A in a state in which insertion of the inner cylinder 51 a into the outer cylinder 51 b is complete.
  • the inner cylinder 51 a is then subjected to heating so as to return the contracted inner cylinder 51 a to its original state, namely a non-contracted state (see step S 803 in FIG. 8 , and FIG. 10B ).
  • this heating is preferably natural warming (waiting until the inner cylinder 51 a naturally returns to normal temperature); however, there is no limitation thereto. Namely, the inner cylinder 51 a may be heated by artificial heating.
  • One conceivable method of artificial heating is to immerse the cylinder MA in a tank filled with warm water; however, any method may be employed as long as the inner cylinder 51 a can be heated without damage. Note that it is preferable that the outer cylinder 51 b does not expand during this heating.
  • the inner cylinder 51 a returns to its original dimensions as a result of being heated.
  • the outer cylinder 51 b remains at its original size throughout.
  • the cylinder 51 A therefore has a structure in which the outer cylinder 51 b is constantly constricting the inner cylinder 51 a from the outside thereof.
  • the preparation flows inside the cylinder 51 A under high pressure. This outward-acting pressure from the preparation on the cylinder has the potential to hasten metal fatigue of the cylinder.
  • external pressure from the outer cylinder 51 b acts on the inner cylinder 51 a .
  • the external pressure from the outer cylinder 51 b counteracts the internal pressure from the preparation flowing inside the inner cylinder 51 a , thereby spreading the pressure acting on the inner cylinder 51 a .
  • the cylinder 51 A is configured with a double-layered structure in which the outer cylinder 51 b applies external pressure to the inner cylinder 51 a , thereby enabling the ability of the cylinder 51 A to withstand the internal pressure from the preparation flowing inside to be improved in comparison to hitherto, and also enabling the degree of metal fatigue in the cylinder 51 A to be reduced in comparison to hitherto.
  • the plunger 51 B is inserted into the cylinder 51 A (see step S 804 in FIG. 8 , and FIG. 10C ).
  • the plunger pump 51 can be manufactured in the above manner.
  • the inner cylinder 51 a is inserted into the outer cylinder 51 b after causing the outer cylinder 51 b to expand by heating
  • the inner cylinder 51 a is inserted into the outer cylinder 51 b after causing the inner cylinder 51 a to contract by cooling.
  • an approach other than heating or cooling may obviously be employed.
  • a robotic machine or the like may be employed to mechanically grip the outer cylinder 51 b , and press-fit the inner cylinder 51 a therein. Press-fitting the inner cylinder 51 a into the outer cylinder 51 b in this manner enables an equivalent configuration to that of the cylinder 51 A of the first and second exemplary embodiments to be realized.
  • a configuration is achieved in which the outer cylinder 51 b applies pressure to the inner cylinder 51 a in a normal state.
  • Such a configuration resists the internal pressure of the inner cylinder 51 a when the pulverizer is operating as described previously.
  • an additional device may be provided in order to apply external pressure to the cylinder 51 A when the pulverizer is operational.
  • a hydraulic device may be attached to the cylinder 51 A so as to apply external pressure to the cylinder 51 A during operation of the pulverizer, or a device such as a vice may be employed to apply external pressure to the cylinder 51 A.
  • the method of manufacturing the plunger pump and the plunger pump according to the above exemplary embodiments enable the provision of a plunger pump including the cylinder 51 A configured such that the outer cylinder 51 b constantly applies external pressure to the inner cylinder 51 a .
  • the pressure acting on the inner cylinder 51 a from the outer cylinder 51 b opposes the internal pressure from the preparation flowing under high pressure inside the cylinder 51 A of the plunger pump 51 , thereby enabling the degree of fatigue in the cylinder 51 A to be reduced in comparison to hitherto.
  • a configuration in which the preparation flows back and forth through the pulverizer 10 may be applied. Namely, a separate plunger pump may be provided at the location provided with the drain 86 in FIG. 1 , such that preparation can flow back and forth inside the pulverizer 10 .
  • the structure of the flow path of the pulverizer 10 may be changed as desired.

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  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
US17/440,348 2019-03-22 2020-03-16 Method of manufacturing plunger pump and plunger pump Pending US20220193751A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019055719A JP7386499B2 (ja) 2019-03-22 2019-03-22 プランジャポンプの製造方法、プランジャポンプ
JP2019-055719 2019-03-22
PCT/JP2020/011513 WO2020196047A1 (ja) 2019-03-22 2020-03-16 プランジャポンプの製造方法、プランジャポンプ

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3149371B2 (ja) * 1996-12-26 2001-03-26 株式会社ジーナス 微粒化方法及びその装置
CN202182024U (zh) * 2011-07-11 2012-04-04 天津市精诚高压泵制造有限责任公司 高压泵加压缸
US20130327212A1 (en) * 2010-12-10 2013-12-12 Reinhold Ficht Cylinder of a reciprocating piston machine and reciprocating piston machine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301126C2 (de) * 1993-01-18 1995-05-24 Danfoss As Verfahren zum Montieren einer Laufbuchse in einem Grundkörper einer hydraulischen Maschine und hydraulische Maschine
JP2002283030A (ja) * 2001-03-26 2002-10-02 Hitachi Metals Ltd 軽合金射出成形機用部材
CN2846806Y (zh) * 2005-12-13 2006-12-13 赵克中 一种泥浆泵缸套
JP2009293406A (ja) * 2008-06-02 2009-12-17 Toyota Motor Corp ピストン機関及びスターリングエンジン
JP2009293405A (ja) * 2008-06-02 2009-12-17 Toyota Industries Corp 内燃機関における排気ガス処理装置
JP5872205B2 (ja) * 2011-08-22 2016-03-01 株式会社スギノマシン 蒸気滅菌手段を備えた湿式微粒化装置
CN102900663B (zh) * 2012-09-27 2015-08-19 四川中物泰沃新材料有限公司 缸套及其制造方法
CN204267275U (zh) * 2014-12-05 2015-04-15 北京金麟石油技术有限公司 止退减震增强碳化硅陶瓷缸套
CN104696211A (zh) * 2015-01-21 2015-06-10 中冶天工上海十三冶建设有限公司 一种赛隆陶瓷泥浆泵缸套及其制作方法
JP6403338B2 (ja) * 2015-05-01 2018-10-10 株式会社スギノマシン ピストンポンプ及び該ピストンポンプを備えた原料処理装置
US10273955B2 (en) * 2016-11-15 2019-04-30 Caterpillar Inc. Piston cartridge for piston pump
JP6946889B2 (ja) 2017-09-21 2021-10-13 トヨタ自動車株式会社 車両用動力伝達装置の制御装置
CN108118119A (zh) * 2017-12-20 2018-06-05 王衍春 一种混凝土输送缸及其制造工艺

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3149371B2 (ja) * 1996-12-26 2001-03-26 株式会社ジーナス 微粒化方法及びその装置
US20130327212A1 (en) * 2010-12-10 2013-12-12 Reinhold Ficht Cylinder of a reciprocating piston machine and reciprocating piston machine
CN202182024U (zh) * 2011-07-11 2012-04-04 天津市精诚高压泵制造有限责任公司 高压泵加压缸

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
English Translation of CN-202182024-U obtained 09/13/2023 (Year: 2012) *
English Translation of JP-H10180065A, an earlier publication of JP 3149371 B2, obtained 09/13/2023 (Year: 2001) *

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