US20160097378A1 - High-viscosity liquid feeding booster pump - Google Patents
High-viscosity liquid feeding booster pump Download PDFInfo
- Publication number
- US20160097378A1 US20160097378A1 US14/650,872 US201414650872A US2016097378A1 US 20160097378 A1 US20160097378 A1 US 20160097378A1 US 201414650872 A US201414650872 A US 201414650872A US 2016097378 A1 US2016097378 A1 US 2016097378A1
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- Prior art keywords
- plunger
- chamber
- booster pump
- liquid
- fluid
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- 239000007788 liquid Substances 0.000 title claims abstract description 83
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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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
-
- 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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0091—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using a special shape of fluid pass, e.g. throttles, ducts
-
- 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
- F04B53/10—Valves; Arrangement of valves
-
- 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
- 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
- F04B53/148—Pistons, piston-rods or piston-rod connections the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit
-
- 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
-
- 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
Definitions
- the present disclosure relates to a booster pump, and more particularly, to a high-viscosity liquid feeding booster pump that minimizes the pulsation of the pump to increase the pressure of the liquid so that the liquid is fed quantitatively.
- a gear pump As a metering pump that supplies a high-viscosity liquid quantitatively using a discharge gun, a gear pump is bulky and heavy. For this reason, a lightweight and pulsation-free secondary metering pump of a piston type based on a ball screw is widely used as a booster pump.
- a booster pump is disclosed in Korean Patent Registration No. 10-1250985 (registered on Mar. 29, 2013).
- the booster pump of the above patent includes a suction header connected to an intake pipe through which a fluid is supplied to allow the fluid supplied from the intake pipe to be introduced thereto, a discharge header to which a discharge pipe through which the fluid introduced into the suction header is discharged is connected, and a pump unit connected between the suction header and the discharge header and configured to increase the pressure of the fluid supplied from the suction header and discharge the pressure-increased fluid to the discharge header.
- the pump unit includes a driving pump configured to suck the fluid from the suction header and discharge the sucked fluid to the discharge header, a suction gate valve disposed between the driving pump and the suction header and configured to supply the fluid introduced thereto from the suction header to the driving pump or interrupt the supply of the fluid to the driving pump, a discharge gate valve disposed between the driving pump and the discharge header and configured to supply the fluid discharged from the driving pump to the discharge header or interrupt the supply of the fluid to the discharge header, a check valve disposed between the driving pump and the discharge header and configured to prevent the backflow of the fluid discharged to the discharge header from the driving pump, and a leakage checking unit disposed between the check valve and the driving pump and including a shield plate configured to reduce an initial pressure of the fluid discharged to the check valve from the driving pump.
- the discharge header includes a flexible joint unit disposed at a portion to which the discharge pipe is connected and configured to be flexibly bent to prevent a shock of the fluid, which is caused by the operation of the driving pump, from being
- FIGS. 1 and 2 show a conventional booster pump in accordance with the prior art.
- a screw 1 a is rotated by an actuator 10 a
- a nut unit 2 a coupled to the screw 1 a is moved vertically and simultaneously a plunger 3 a coupled to the nut unit 2 a is moved vertically to cause a liquid to be filled in a chamber 120 a or the liquid filled in the chamber 120 a to be discharged.
- a charge valve 4 a and a discharge valve 5 a are respectively disposed at a liquid charge port and a liquid discharge port of the booster pump so as to be opened/closed in response to an instruction from a control device.
- the charge valve 4 a at the liquid charge port is opened to cause the liquid to be introduced into the chamber 120 a.
- the charge valve 4 a is closed by the control device and the actuator 10 a starts to be reversely rotated to cause the nut unit 2 a and the plunger 3 a to be moved downwardly simultaneously so that the discharge valve 5 a is opened by the control device to cause the liquid filled in the chamber 120 a to be discharged through a discharge port 32 a.
- the discharge valve 5 a is closed by the control device and the actuator 10 a is reversely rotated to cause the plunger 3 a to be moved upwardly.
- the charge valve 4 a is opened by the control device simultaneously with the upward movement of the plunger 3 a , the liquid filling or charging process is repeatedly performed.
- FIG. 3 is a cross-sectional view showing a viscosity liquid filling and discharging process of a booster pump in accordance with the prior art.
- the present disclosure has been made to solve the aforementioned problems occurring in the prior art, and it is an object of the present invention to provide a high-viscosity liquid feeding booster pump in which a charged liquid feeding passage is spirally formed on the inner peripheral surface of a chamber so that a viscous liquid is primarily sequentially accumulated at a discharge part side in the order in which the liquid is filled or charged by a piston or plunger that repeatedly performs the ascending and descending motion using a ball screw and so that when the piston or plunger descends to extrude the liquid, a first filled viscous liquid is first discharged and simultaneously the charged liquid feeding passage is opened along a distal front end of the piston or plunger upon the charging of the liquid to always fill a new viscous liquid to prevent the liquid from being adhered to and left around the piston or plunger, and in which the spirally formed passage is rounded smoothly to minimize a cause of sedimentation of a liquid residue.
- a booster pump including:
- a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber;
- a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force
- a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid
- the body includes a charged liquid feeding passage spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with the intake port connected to the charge valve, and
- the charged liquid feeding passage has an outlet formed in proximity to the discharge valve.
- the plunger may include a front end formed protrudingly in a conical shape
- the chamber may include a seat formed concavely in a conical shape at a bottom thereof in such a manner as to be in close contact with the front end of the plunger.
- a connection part between the intake port and the chamber may be chamfered to form a bent part.
- a problem is solved in that a liquid residue is produced inside the chamber due to the incompleteness of the first-in first-out operation and a sediment solidified or cured over time is separated apart from the inside of the chamber to block the discharge port, so that the charge and discharge of the viscous liquid is performed in a first-in first-out manner inside the chamber and a structure of the pump is improved to prevent the liquid residue from being left in the chamber to minimize generation of solidified or cured substances, thereby reducing unnecessary time and cost and basically preventing an unpredictable accident such as a stop of a production line and thus significantly increasing productivity.
- FIGS. 1 and 2 are cross-sectional views showing a conventional booster pump in accordance with the prior art
- FIG. 3 is a cross-sectional view showing a state in which a liquid residue is left in a liquid filling and discharging process of a booster pump in accordance with the prior art
- FIG. 4 is a front cross-sectional view showing a booster pump in accordance with an embodiment of the present disclosure
- FIG. 5 is a partially enlarged front cross-sectional view showing the booster pump of FIG. 4 ;
- FIG. 6 is a perspective view showing the booster pump of FIG. 5 ;
- FIGS. 7( a ) to 7 ( i ) are cross-sectional views showing a liquid filling and discharging process of the booster pump in accordance with an embodiment of the present disclosure.
- FIG. 4 is a front cross-sectional view showing a booster pump in accordance with an embodiment of the present disclosure
- FIG. 5 is a partially enlarged front cross-sectional view showing the booster pump of FIG. 4
- FIG. 6 is a perspective view showing the booster pump of FIG. 5
- FIGS. 7( a ) to 7 ( i ) are cross-sectional views showing a liquid filling and discharging process of the booster pump in accordance with an embodiment of the present disclosure.
- a high-viscosity liquid feeding booster pump in accordance with the present invention includes: a body 100 having an actuator (not shown) mounted at one side thereof and a discharge valve 400 formed at the other side thereof, the body 100 being formed internally with a chamber 120 ; a plunger 200 configured to be inserted into the body 100 , and advanced or retracted relative to the body 100 by the operation of the actuator to generate a compressive force or a suction force; and a charge valve 300 disposed at one side of the body 100 and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger 200 to supply a fluid to the inside of the body 100 or interrupt the supply of the fluid.
- the charge valve 300 is disposed at an intake port 130 formed at an upper portion of one side of the body 100 in such a manner as to be spaced apart from a discharge valve 400 .
- a connection part between the intake port 130 and the chamber 120 is chamfered to form a bent part 140 .
- a fluid supply unit (not shown) for supplying a fluid is provided at the outside of the charge valve 300 .
- a high-viscosity liquid is mainly used as the fluid.
- the chamber 120 is vertically formed within the body 100 .
- the plunger 200 ascends or descends in a state of being inserted into the chamber 120 to induce the suction or compression of the fluid through the charge valve 300 .
- An intake port 130 is formed at an upper portion of one side of the body 100 .
- the body includes a charged liquid feeding passage 600 spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with the intake port 130 .
- the charged liquid feeding passage 600 has an outlet 620 formed at a lower end thereof in proximity to a seat 170 .
- the liquid filled in a liquid feed passage section extending from the upper end, i.e., a portion connected to the intake port 130 , of the charged liquid feeding passage 600 to the outlet 620 of the charged liquid feeding passage 600 is introduced into the chamber 120 , and a newly introduced liquid is charged in the charged liquid feeding passage 600 .
- the plunger 200 When the plunger 200 is lowered, the fluid charged in the chamber 120 is compressed and is injected to the outside through the discharge valve 400 and the nozzle 430 .
- the charging liquid feed passage 600 is spirally formed on the inner peripheral surface of the chamber 120 of the body 100 in such a manner as to fluidically communicate with the intake port 130 connected to the charge valve 300 , and the outlet 620 of the charging liquid feed passage 600 is formed in proximity to the discharge port 180 connected to the discharge valve 400 .
- the charged liquid feeding passage 600 is spirally formed in a single number or plural numbers on the inner peripheral surface of the chamber 120 .
- the charged liquid feeding passage 600 is formed on the inner peripheral surface of the chamber 120 in a shape which is recessed into a predetermined depth so that when the plunger 200 ascends while the outer peripheral surface of the plunger 200 comes into close contact with the inner peripheral surface of the chamber 120 , the liquid flows out of the charged liquid feeding passage 600 opened in a circumferential direction and is filled in the chamber 120 in an accumulated manner.
- the plunger 200 when the plunger 200 descends, it discharges the liquid contained in the chamber 120 and simultaneously pressurizes the fluid within the charged liquid feeding passage 600 so that the fluid is effectively fed to the final outlet through the spirally formed liquid feeding passage 600 , and thus is discharged to the discharge valve 400 while inducing a swirling motion of a fluid gathered in the bottom of the chamber 120 , which is adjacent to the discharge valve 400 , thereby preventing a residue from being left at the bottom of the chamber 120 .
- the plunger 200 includes a front end 25 formed protrudingly in a conical shape
- the chamber 120 includes a seat 170 formed concavely in a conical shape at the bottom thereof in such a manner as to be in close contact with the front end 250 of the plunger 200 .
- the front end 250 of the plunger 250 is formed protrudingly in a sharpening shape so that the surface area of a portion where a high-viscosity liquid will be left is reduced.
- the bottom of the chamber 120 with which the front end of the plunger 200 is in close contact, is formed with the seat 170 having a shape corresponding to in a conical shape.
- the discharge port 180 is formed at the central portion of the seat 170 so as to fluidically communicate with the discharge valve 400 .
- the high-viscosity liquid intensively gathered in the center of the seat 170 is discharged through the discharge port 180 . Further, because the seat 170 is recessed concavely, the high-viscosity liquid can flow to the center of the seat 170 , thereby preventing the high-viscosity liquid from being left in the seat 170 .
- the plunger 200 is lifted, the charged liquid feeding passage 600 is opened along the front end of the plunger 200 to fill a liquid in the chamber 120 so that a new liquid is always filled in an upper layer portion of the charged liquid feeding passage 600 , thereby completely attaining a first-in first-out operation of the liquid.
- the operation order of booster pump is performed in an order of (a) to (i).
- FIG. 7( a ) shows a state in which the plunger 200 is positioned at the lowest point and the liquid is completely discharged from the chamber of the body.
- FIGS. 7( b ) to 7 ( h ) sequentially shows the ascending operation of the plunger 200 .
- a new liquid filled in a passage section extending from the intake port 130 to the outlet of the charged liquid feeding passage 600 , which is connected to the intake port 130 starts to be filled in the chamber 120 , starting from the bottom of the chamber 120 .
- FIGS. 7( b ) to 7 ( h ) denote liquid-filled positions.
- FIG. 7( i ) shows a state in which the plunger 200 descends to discharge the liquid after the liquid is completely filled in the chamber.
- the plunger 200 is maintained in a clean state to prevent the viscous liquid form being accumulated in and adhered to the distal end of the plunger 200
- the lower end of the plunger 200 and the seat 170 of the chamber 120 are machined in a conical shape having a gradient so that the liquid can be rapidly discharged without being left in the chamber upon the discharge thereof.
- the present disclosure can provide a high-viscosity liquid feeding booster pump that minimizes the pulsation of the pump to increase the pressure of the liquid so that the liquid is fed quantitatively.
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- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present disclosure relates to a high-viscosity liquid feeding booster pump. The booster pump includes: a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber; a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid.
Description
- The present disclosure relates to a booster pump, and more particularly, to a high-viscosity liquid feeding booster pump that minimizes the pulsation of the pump to increase the pressure of the liquid so that the liquid is fed quantitatively.
- As a metering pump that supplies a high-viscosity liquid quantitatively using a discharge gun, a gear pump is bulky and heavy. For this reason, a lightweight and pulsation-free secondary metering pump of a piston type based on a ball screw is widely used as a booster pump.
- A booster pump is disclosed in Korean Patent Registration No. 10-1250985 (registered on Mar. 29, 2013).
- The booster pump of the above patent includes a suction header connected to an intake pipe through which a fluid is supplied to allow the fluid supplied from the intake pipe to be introduced thereto, a discharge header to which a discharge pipe through which the fluid introduced into the suction header is discharged is connected, and a pump unit connected between the suction header and the discharge header and configured to increase the pressure of the fluid supplied from the suction header and discharge the pressure-increased fluid to the discharge header. The pump unit includes a driving pump configured to suck the fluid from the suction header and discharge the sucked fluid to the discharge header, a suction gate valve disposed between the driving pump and the suction header and configured to supply the fluid introduced thereto from the suction header to the driving pump or interrupt the supply of the fluid to the driving pump, a discharge gate valve disposed between the driving pump and the discharge header and configured to supply the fluid discharged from the driving pump to the discharge header or interrupt the supply of the fluid to the discharge header, a check valve disposed between the driving pump and the discharge header and configured to prevent the backflow of the fluid discharged to the discharge header from the driving pump, and a leakage checking unit disposed between the check valve and the driving pump and including a shield plate configured to reduce an initial pressure of the fluid discharged to the check valve from the driving pump. The discharge header includes a flexible joint unit disposed at a portion to which the discharge pipe is connected and configured to be flexibly bent to prevent a shock of the fluid, which is caused by the operation of the driving pump, from being transferred to the discharge pipe.
- Meanwhile,
FIGS. 1 and 2 show a conventional booster pump in accordance with the prior art. InFIGS. 1 and 2 , when ascrew 1 a is rotated by anactuator 10 a, anut unit 2 a coupled to thescrew 1 a is moved vertically and simultaneously aplunger 3 a coupled to thenut unit 2 a is moved vertically to cause a liquid to be filled in achamber 120 a or the liquid filled in thechamber 120 a to be discharged. - A
charge valve 4 a and adischarge valve 5 a are respectively disposed at a liquid charge port and a liquid discharge port of the booster pump so as to be opened/closed in response to an instruction from a control device. Thus, when thescrew 1 a is rotated by theactuator 10 a and simultaneously theplunger 3 a coupled to thenut unit 2 a is moved upwardly, thecharge valve 4 a at the liquid charge port is opened to cause the liquid to be introduced into thechamber 120 a. - When the plunger reaches a top dead point where the liquid is filled, the
charge valve 4 a is closed by the control device and theactuator 10 a starts to be reversely rotated to cause thenut unit 2 a and theplunger 3 a to be moved downwardly simultaneously so that thedischarge valve 5 a is opened by the control device to cause the liquid filled in thechamber 120 a to be discharged through adischarge port 32 a. - At a bottom dead point where the discharge of the liquid is completed, the
discharge valve 5 a is closed by the control device and theactuator 10 a is reversely rotated to cause theplunger 3 a to be moved upwardly. Similarly, when thecharge valve 4 a is opened by the control device simultaneously with the upward movement of theplunger 3 a, the liquid filling or charging process is repeatedly performed. -
FIG. 3 is a cross-sectional view showing a viscosity liquid filling and discharging process of a booster pump in accordance with the prior art. - In
FIG. 3 , because the liquid is always adhered to or gathered in a distal end of theplunger 3 a and a corner of the bottom end of the inside of thechamber 120 a, it is denaturized and coagulated over time so that solidified substances X left as liquid residues become large gradually and thus fragments are partially separated away from the solidified substances X, thus causing a problem in that thedischarge port 32 a is blocked. - Accordingly, the present disclosure has been made to solve the aforementioned problems occurring in the prior art, and it is an object of the present invention to provide a high-viscosity liquid feeding booster pump in which a charged liquid feeding passage is spirally formed on the inner peripheral surface of a chamber so that a viscous liquid is primarily sequentially accumulated at a discharge part side in the order in which the liquid is filled or charged by a piston or plunger that repeatedly performs the ascending and descending motion using a ball screw and so that when the piston or plunger descends to extrude the liquid, a first filled viscous liquid is first discharged and simultaneously the charged liquid feeding passage is opened along a distal front end of the piston or plunger upon the charging of the liquid to always fill a new viscous liquid to prevent the liquid from being adhered to and left around the piston or plunger, and in which the spirally formed passage is rounded smoothly to minimize a cause of sedimentation of a liquid residue.
- To achieve the above and other objects, in accordance with the present disclosure, there is provided a booster pump including:
- a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber;
- a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and
- a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid,
- wherein the body includes a charged liquid feeding passage spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with the intake port connected to the charge valve, and
- wherein the charged liquid feeding passage has an outlet formed in proximity to the discharge valve.
- The plunger may include a front end formed protrudingly in a conical shape, and the chamber may include a seat formed concavely in a conical shape at a bottom thereof in such a manner as to be in close contact with the front end of the plunger.
- A connection part between the intake port and the chamber may be chamfered to form a bent part.
- In accordance with the booster pump of the present invention as constructed above, a problem is solved in that a liquid residue is produced inside the chamber due to the incompleteness of the first-in first-out operation and a sediment solidified or cured over time is separated apart from the inside of the chamber to block the discharge port, so that the charge and discharge of the viscous liquid is performed in a first-in first-out manner inside the chamber and a structure of the pump is improved to prevent the liquid residue from being left in the chamber to minimize generation of solidified or cured substances, thereby reducing unnecessary time and cost and basically preventing an unpredictable accident such as a stop of a production line and thus significantly increasing productivity.
- The above objects, other features and advantages of the present disclosure will become more apparent by describing the preferred embodiments thereof with reference to the accompanying drawings, in which:
-
FIGS. 1 and 2 are cross-sectional views showing a conventional booster pump in accordance with the prior art; -
FIG. 3 is a cross-sectional view showing a state in which a liquid residue is left in a liquid filling and discharging process of a booster pump in accordance with the prior art; -
FIG. 4 is a front cross-sectional view showing a booster pump in accordance with an embodiment of the present disclosure; -
FIG. 5 is a partially enlarged front cross-sectional view showing the booster pump ofFIG. 4 ; -
FIG. 6 is a perspective view showing the booster pump ofFIG. 5 ; and -
FIGS. 7( a) to 7(i) are cross-sectional views showing a liquid filling and discharging process of the booster pump in accordance with an embodiment of the present disclosure. -
-
- 100: body
- 120: chamber
- 130: intake port
- 140: bent part
- 170: seat
- 180: discharge port
- 200: plunger
- 300: charge valve
- Hereinafter, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. For the sake of a clearer understanding of the present disclosure, the thickness of lines or the size of constituent elements shown in the drawings may be illustrated exaggeratingly for the clarity and convenience of description.
- In the drawings,
FIG. 4 is a front cross-sectional view showing a booster pump in accordance with an embodiment of the present disclosure,FIG. 5 is a partially enlarged front cross-sectional view showing the booster pump ofFIG. 4 ,FIG. 6 is a perspective view showing the booster pump ofFIG. 5 , andFIGS. 7( a) to 7(i) are cross-sectional views showing a liquid filling and discharging process of the booster pump in accordance with an embodiment of the present disclosure. - As shown in
FIGS. 4 to 7 , a high-viscosity liquid feeding booster pump in accordance with the present invention includes: abody 100 having an actuator (not shown) mounted at one side thereof and adischarge valve 400 formed at the other side thereof, thebody 100 being formed internally with achamber 120; aplunger 200 configured to be inserted into thebody 100, and advanced or retracted relative to thebody 100 by the operation of the actuator to generate a compressive force or a suction force; and acharge valve 300 disposed at one side of thebody 100 and configured to be opened or closed in cooperation with the advancing or retracting operation of theplunger 200 to supply a fluid to the inside of thebody 100 or interrupt the supply of the fluid. - Herein, the
charge valve 300 is disposed at anintake port 130 formed at an upper portion of one side of thebody 100 in such a manner as to be spaced apart from adischarge valve 400. A connection part between theintake port 130 and thechamber 120 is chamfered to form abent part 140. - A fluid supply unit (not shown) for supplying a fluid is provided at the outside of the
charge valve 300. In this case, a high-viscosity liquid is mainly used as the fluid. - The
chamber 120 is vertically formed within thebody 100. Theplunger 200 ascends or descends in a state of being inserted into thechamber 120 to induce the suction or compression of the fluid through thecharge valve 300. - An
intake port 130 is formed at an upper portion of one side of thebody 100. The body includes a chargedliquid feeding passage 600 spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with theintake port 130. The chargedliquid feeding passage 600 has anoutlet 620 formed at a lower end thereof in proximity to aseat 170. - Thus, when the
plunger 200 starts to ascend, a suction force is generated from thecharge valve 300 and theoutlet 620 formed at the lower end of the chargedliquid feeding passage 600 connected to theintake port 130 so that thecharge valve 300 is opened to cause the fluid from the fluid supply unit to be introduced into thechamber 120. - Herein, the liquid filled in a liquid feed passage section extending from the upper end, i.e., a portion connected to the
intake port 130, of the chargedliquid feeding passage 600 to theoutlet 620 of the chargedliquid feeding passage 600 is introduced into thechamber 120, and a newly introduced liquid is charged in the chargedliquid feeding passage 600. - When the
plunger 200 is lowered, the fluid charged in thechamber 120 is compressed and is injected to the outside through thedischarge valve 400 and thenozzle 430. - In accordance with embodiment of the present invention, the charging
liquid feed passage 600 is spirally formed on the inner peripheral surface of thechamber 120 of thebody 100 in such a manner as to fluidically communicate with theintake port 130 connected to thecharge valve 300, and theoutlet 620 of the chargingliquid feed passage 600 is formed in proximity to thedischarge port 180 connected to thedischarge valve 400. - In other words, the charged
liquid feeding passage 600 is spirally formed in a single number or plural numbers on the inner peripheral surface of thechamber 120. The chargedliquid feeding passage 600 is formed on the inner peripheral surface of thechamber 120 in a shape which is recessed into a predetermined depth so that when theplunger 200 ascends while the outer peripheral surface of theplunger 200 comes into close contact with the inner peripheral surface of thechamber 120, the liquid flows out of the chargedliquid feeding passage 600 opened in a circumferential direction and is filled in thechamber 120 in an accumulated manner. Further, when theplunger 200 descends, it discharges the liquid contained in thechamber 120 and simultaneously pressurizes the fluid within the chargedliquid feeding passage 600 so that the fluid is effectively fed to the final outlet through the spirally formedliquid feeding passage 600, and thus is discharged to thedischarge valve 400 while inducing a swirling motion of a fluid gathered in the bottom of thechamber 120, which is adjacent to thedischarge valve 400, thereby preventing a residue from being left at the bottom of thechamber 120. - In the meantime, the
plunger 200 includes a front end 25 formed protrudingly in a conical shape, and thechamber 120 includes aseat 170 formed concavely in a conical shape at the bottom thereof in such a manner as to be in close contact with thefront end 250 of theplunger 200. - As such, the
front end 250 of theplunger 250 is formed protrudingly in a sharpening shape so that the surface area of a portion where a high-viscosity liquid will be left is reduced. Moreover, the bottom of thechamber 120, with which the front end of theplunger 200 is in close contact, is formed with theseat 170 having a shape corresponding to in a conical shape. Thedischarge port 180 is formed at the central portion of theseat 170 so as to fluidically communicate with thedischarge valve 400. - Thus, the high-viscosity liquid intensively gathered in the center of the
seat 170 is discharged through thedischarge port 180. Further, because theseat 170 is recessed concavely, the high-viscosity liquid can flow to the center of theseat 170, thereby preventing the high-viscosity liquid from being left in theseat 170. In addition, theplunger 200 is lifted, the chargedliquid feeding passage 600 is opened along the front end of theplunger 200 to fill a liquid in thechamber 120 so that a new liquid is always filled in an upper layer portion of the chargedliquid feeding passage 600, thereby completely attaining a first-in first-out operation of the liquid. - Hereinafter, the operation of the high-viscosity liquid feeding booster pump in accordance with the present invention will be described.
- As shown in
FIG. 7 , the operation order of booster pump is performed in an order of (a) to (i). -
FIG. 7( a) shows a state in which theplunger 200 is positioned at the lowest point and the liquid is completely discharged from the chamber of the body. -
FIGS. 7( b) to 7(h) sequentially shows the ascending operation of theplunger 200. InFIGS. 7( b) to 7(h), a new liquid filled in a passage section extending from theintake port 130 to the outlet of the chargedliquid feeding passage 600, which is connected to theintake port 130, starts to be filled in thechamber 120, starting from the bottom of thechamber 120. - Arrows indicated in
FIGS. 7( b) to 7(h) denote liquid-filled positions. -
FIG. 7( i) shows a state in which theplunger 200 descends to discharge the liquid after the liquid is completely filled in the chamber. - Thus, because the present invention follows a first-in first-out operation in which a new liquid is charged in the chamber and then is discharged, the
plunger 200 is maintained in a clean state to prevent the viscous liquid form being accumulated in and adhered to the distal end of theplunger 200 - Further, the lower end of the
plunger 200 and theseat 170 of thechamber 120 are machined in a conical shape having a gradient so that the liquid can be rapidly discharged without being left in the chamber upon the discharge thereof. - While the present invention has been described in connection with the specific embodiments illustrated in the drawings, they are merely illustrative, and the invention is not limited to these embodiments. It is to be understood that various equivalent modifications and variations of the embodiments can be made by a person having an ordinary skill in the art without departing from the spirit and scope of the present invention. Therefore, the true technical scope of the present invention should not be defined by the above-mentioned embodiments but should be defined by the appended claims and equivalents thereof.
- The present disclosure can provide a high-viscosity liquid feeding booster pump that minimizes the pulsation of the pump to increase the pressure of the liquid so that the liquid is fed quantitatively.
Claims (3)
1. A booster pump comprising:
a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber;
a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and
a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid,
wherein the body includes a charged liquid feeding passage spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with the intake port connected to the charge valve, and
wherein the charged liquid feeding passage has an outlet formed in proximity to the discharge valve.
2. The booster pump according to claim 1 , wherein the plunger comprises a front end formed protrudingly in a conical shape, and the chamber comprises a seat formed concavely in a conical shape at a bottom thereof in such a manner as to be in close contact with the front end of the plunger.
3. The booster pump according to claim 1 , wherein a connection part between the intake port and the chamber is chamfered to form a bent part.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2014-0002996 | 2014-01-09 | ||
KR1020140002996A KR101434626B1 (en) | 2014-01-09 | 2014-01-09 | Booster pump for high viscosity liquid transfer |
PCT/KR2014/008199 WO2015105254A1 (en) | 2014-01-09 | 2014-09-02 | Booster pump for transferring high-viscosity liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160097378A1 true US20160097378A1 (en) | 2016-04-07 |
Family
ID=51751419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/650,872 Abandoned US20160097378A1 (en) | 2014-01-09 | 2014-09-02 | High-viscosity liquid feeding booster pump |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160097378A1 (en) |
KR (1) | KR101434626B1 (en) |
CN (1) | CN105190036B (en) |
WO (1) | WO2015105254A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018192642A1 (en) * | 2017-04-18 | 2018-10-25 | Hp Indigo B.V. | High-viscosity fluid delivery |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101719533B1 (en) * | 2016-08-04 | 2017-03-24 | 김승호 | The fixed quantity and mixing dispenser for High Viscosity Resin of plunger type of motor pressing with automatic opening and shutting piston and valve |
CN106762512A (en) * | 2017-01-14 | 2017-05-31 | 东莞市聚瑞电气技术有限公司 | A kind of new construction small-sized plunger pump |
KR101867246B1 (en) * | 2017-12-28 | 2018-06-12 | 한현석 | Plunger pump |
KR102473822B1 (en) | 2020-12-10 | 2022-12-05 | 조시영 | Highly viscous liquid metering pump with thermal cooling function |
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US4911127A (en) * | 1989-07-12 | 1990-03-27 | Cummins Engine Company, Inc. | Fuel injector for an internal combustion engine |
JP2000326376A (en) * | 1999-05-17 | 2000-11-28 | Toshiba Mach Co Ltd | Preplasticating injection device |
US20040084549A1 (en) * | 2001-12-19 | 2004-05-06 | Teruo Maruyama | Method and apparatus of applying fluid |
Family Cites Families (5)
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CN2200706Y (en) * | 1994-01-11 | 1995-06-14 | 孙新民 | Hydraulic terminal device of reciprocating plunger pump |
JP4648254B2 (en) * | 2006-06-22 | 2011-03-09 | 日立オートモティブシステムズ株式会社 | High pressure fuel pump |
JP2009228603A (en) * | 2008-03-24 | 2009-10-08 | Mutual Corp | Device for taking out high viscosity object and method for taking out high viscosity object |
CN201982941U (en) * | 2011-03-31 | 2011-09-21 | 北京中冶华润科技发展有限公司 | Pump unit of plunger pump |
KR101285034B1 (en) * | 2011-11-04 | 2013-07-10 | 한형수 | Cam type fluid dispenser |
-
2014
- 2014-01-09 KR KR1020140002996A patent/KR101434626B1/en active IP Right Grant
- 2014-09-02 US US14/650,872 patent/US20160097378A1/en not_active Abandoned
- 2014-09-02 WO PCT/KR2014/008199 patent/WO2015105254A1/en active Application Filing
- 2014-09-02 CN CN201480021175.9A patent/CN105190036B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4911127A (en) * | 1989-07-12 | 1990-03-27 | Cummins Engine Company, Inc. | Fuel injector for an internal combustion engine |
JP2000326376A (en) * | 1999-05-17 | 2000-11-28 | Toshiba Mach Co Ltd | Preplasticating injection device |
US20040084549A1 (en) * | 2001-12-19 | 2004-05-06 | Teruo Maruyama | Method and apparatus of applying fluid |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018192642A1 (en) * | 2017-04-18 | 2018-10-25 | Hp Indigo B.V. | High-viscosity fluid delivery |
Also Published As
Publication number | Publication date |
---|---|
WO2015105254A1 (en) | 2015-07-16 |
KR101434626B1 (en) | 2014-08-27 |
WO2015105254A9 (en) | 2015-09-17 |
CN105190036A (en) | 2015-12-23 |
CN105190036B (en) | 2017-03-08 |
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