CN114658628A - Pressure-adjustable plunger pump and energy recovery integrated machine - Google Patents

Pressure-adjustable plunger pump and energy recovery integrated machine Download PDF

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Publication number
CN114658628A
CN114658628A CN202210351953.7A CN202210351953A CN114658628A CN 114658628 A CN114658628 A CN 114658628A CN 202210351953 A CN202210351953 A CN 202210351953A CN 114658628 A CN114658628 A CN 114658628A
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CN
China
Prior art keywords
motor
pump
plunger
end cover
swash plate
Prior art date
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Pending
Application number
CN202210351953.7A
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Chinese (zh)
Inventor
俞远高
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210351953.7A priority Critical patent/CN114658628A/en
Publication of CN114658628A publication Critical patent/CN114658628A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B25/00—Regulating, controlling, or safety means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F01B3/0064—Machine housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0082—Details
    • F01B3/0085—Pistons
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2064—Housings
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention discloses a pressure-adjustable plunger pump and energy recovery all-in-one machine, which comprises a plunger pump and a plunger motor which are connected with each other, wherein the plunger pump generates high pressure, and the plunger motor recovers energy and comprises a pump flange, a pump front end cover, a pump shell, a motor front end cover, a motor shell and a motor rear end cover which are sequentially connected from right to left; a motor swash plate is arranged between the motor return plate and the motor rear end cover, the bottom of the motor swash plate is in spherical contact with the inner surface of the motor rear end cover, an axial bolt hole is formed in the bottom of the motor swash plate, an axial bolt is inserted into the axial bolt hole from the outer side of the motor rear end cover, and the axial bolt radially moves up and down to enable the motor to rotate on the inner surface of the motor rear end cover obliquely, so that the inclination angle of the motor swash plate is adjusted. The invention has adjustable pressure, can be suitable for raw water with various salinity and reverse osmosis membranes with various configurations, and prolongs the service life of the reverse osmosis membrane.

Description

Pressure-adjustable plunger pump and energy recovery integrated machine
Technical Field
The application belongs to the technical field of seawater desalination, and more specifically relates to a pressure-adjustable plunger pump and energy recovery all-in-one machine.
Background
In the present day of increasingly energy shortage, energy recovery is an important measure for improving the utilization rate of the existing energy. In a membrane-process reverse osmosis seawater desalination system, a high-pressure pump and an energy recovery device are the most important two components, and a plunger pump and an energy recovery integrated machine effectively integrate the high-pressure pump and the energy recovery device to optimize the system composition. However, the pressure of the conventional plunger pump and the energy recovery all-in-one machine is not adjustable at a certain rotating speed. The required pressure of raw water with different salinity is different, the selective matching of the reverse osmosis membrane can also influence the pressure, dirt can be accumulated when the reverse osmosis membrane runs for a period, the system pressure can reach a limit value, the pressure needs to be reduced to prolong the service life of the reverse osmosis membrane, and a valve control device is generally added for auxiliary adjustment to reach the required pressure.
The Chinese patent (CN 107829896A) is the closest prior art to the application, and discloses a flow-adjustable plunger type high-pressure pump energy recovery all-in-one machine, which adjusts the angle of a swash plate by arranging a spherical hinge bolt, thereby realizing the adjustment of system pressure.
However, the device has a complex structure and high sealing requirement, and is not easy to produce in batches.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a pressure-adjustable plunger pump and energy recovery all-in-one machine.
In order to realize the purpose of the invention, the technical scheme provided by the invention is as follows: a pressure-adjustable plunger pump and energy recovery integrated machine comprises a plunger pump and a plunger motor which are connected with each other, wherein the plunger pump generates high pressure, the plunger motor recovers energy, the pressure-adjustable plunger pump and energy recovery integrated machine comprises a pump flange 1, a pump front end cover 2, a pump shell 3, a motor front end cover 15, a motor shell 12 and a motor rear end cover 19 which are sequentially connected from right to left, a coupler 10 is arranged in the motor front end cover 15, the right side of the coupler 10 is connected with a pump shaft 9, and the left side of the coupler 10 is connected with a motor shaft 16; a pump cylinder body 6 rotating along with the pump shaft 9 is arranged between the pump shaft 9 and the pump shell 3, an axial pump plunger 7 rotating along with the pump cylinder body 6 is arranged in the pump cylinder body 6, and a pump return disc 8 rotating along with the axial pump plunger 7 is arranged on the left side of the pump cylinder body 6; a motor cylinder 17 rotating with the motor shaft 16 is arranged between the motor shaft 16 and the motor housing 12, an axial motor plunger 13 rotating with the motor cylinder 17 is arranged in the motor cylinder 17, and a motor return disc 14 rotating with the axial motor plunger 13 is arranged on the left side of the motor cylinder 17; a motor swash plate 11 is arranged between the motor return plate 14 and the motor rear end cover 19, the bottom of the motor swash plate 11 is in spherical contact with the inner surface of the motor rear end cover 19, an axial bolt hole 25 is arranged at the bottom of the motor swash plate 11, an axial bolt 21 is inserted into the axial bolt hole 25 from the outer side of the motor rear end cover 19, and the axial bolt 21 moves up and down in the radial direction, so that the motor swash plate 11 rotates on the inner surface of the motor rear end cover 19, and the inclination angle of the motor swash plate 11 is adjusted; the axial bolt 21 moves downwards, the inclination angle of the motor swash plate 11 is reduced, the inclination angle of the motor return plate 14 is reduced, the stroke of the plunger of the motor plunger 13 is shortened, the flow is reduced, and the system pressure is increased; the axial bolt 21 moves upward, the inclination angle of the motor swash plate 11 increases, the inclination angle of the motor return plate 14 increases, the plunger stroke of the motor plunger 13 becomes longer, the flow rate increases, and the pressure becomes smaller.
Preferably, the inner surface of the motor rear end cover 19 is provided with a radial guide rail groove 23, the swash plate bottom 11 is provided with a positioning pin 24, and the part of the positioning pin 24 extending out of the swash plate bottom 11 is arranged in the radial guide rail groove 23 and can slide up and down along the radial guide rail groove 23.
Preferably, the inner surface of the motor rear end cover 19 is provided with a circular seal ring groove 29, and the seal ring groove 29 is provided with a seal ring 30.
Preferably, a radial headless limiting bolt 20 is arranged on the outer side of the motor rear end cover 19 opposite to the axial bolt 21; the inclination angle of the motor swash plate 11 is adjusted by adjusting the vertical position of the axial bolt 21, and the axial bolt 21 is fixed by the radial limit headless bolt 20.
Preferably, the motor swash plate 11 is hemispherical.
Preferably, a pump swash plate 4 is arranged between the pump return disc 8 and the coupling 10, and the pump swash plate 4 is provided with an axial through hole 22 for the pump shaft 9 to pass through.
Preferably, the coupling 10 includes a right coupling half 26, an elastomer 27 and a left coupling half 28.
Preferably, the pump shaft 9 is sleeved with a pump spring 5 at a position in the pump plunger 7.
Preferably, the motor shaft 16 is sleeved with a motor spring 18 at a position in the motor plunger 13.
The invention has the beneficial effects that:
1. the pressure of the invention is adjustable, the invention can be suitable for raw water with various salinity and reverse osmosis membranes with various configurations, and the service life of the reverse osmosis membrane is prolonged, when the system pressure is insufficient, the pressure of the system can be improved by reducing the inclination angle of the swash plate of the motor to reduce the recovery flow; conversely, when the system pressure is too high, the recovery flow rate may be increased by increasing the inclination angle of the motor swash plate, thereby reducing the system pressure.
2. The invention has simple pressure regulation principle, and the reverse osmosis seawater desalination system using the device can omit unnecessary valve control devices.
3. The invention has simple structure, reliability and easy batch production.
Drawings
FIG. 1 is a general cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the coupling of FIG. 1;
FIG. 3 is a cross-sectional view of the swash plate of the motor of FIG. 1;
FIG. 4 is a structural view of the motor swash plate of FIG. 1;
FIG. 5 is a view of the rear cover of the motor of FIG. 1;
in the figure, 1 pump flange, 2 pump front end cover, 3 pump shell, 4 pump swash plate, 5 pump spring, 6 pump cylinder body, 7 pump plunger, 8 pump return disc, 9 pump shaft, 10 coupler, 11 motor swash plate, 12 motor shell, 13 motor plunger, 14 motor return disc, 15 motor front end cover, 16 motor shaft, 17 motor cylinder body, 18 motor spring, 19 motor rear end cover, 20 radial limit headless bolt, 21 axial bolt, 22 axial through hole, 23 radial guide rail groove, 24 positioning pin, 25 axial bolt hole, 26 right half coupler, 27 elastomer, 28 left half coupler, 29 seal ring groove, 30 seal ring groove
Detailed Description
The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
FIG. 1 is a general structural schematic diagram of the present invention, FIG. 2 is a structural schematic diagram of a coupling in FIG. 1, and FIG. 3 is a structural schematic diagram of a swash plate of a motor in FIG. 1; the following embodiments of the present invention are specifically described with reference to fig. 1, fig. 2, and fig. 3:
the invention discloses a pressure-adjustable plunger pump and energy recovery all-in-one machine, which comprises a plunger pump and a plunger motor which are connected with each other, wherein the plunger pump generates high pressure, the plunger motor recovers energy, the pressure-adjustable plunger pump and energy recovery all-in-one machine comprises a pump flange 1, a pump front end cover 2, a pump shell 3, a motor front end cover 15, a motor shell 12 and a motor rear end cover 19 which are sequentially connected from right to left, a coupler 10 is arranged in the motor front end cover 15, and the coupler 10 comprises a right half coupler 26, an elastic body 27 and a left half coupler 28.
The right side of the coupler 10 is connected with a pump shaft 9, and the left side of the coupler 10 is connected with a motor shaft 16; a pump cylinder body 6 rotating along with the pump shaft 9 is arranged between the pump shaft 9 and the pump shell 3, an axial pump plunger 7 rotating along with the pump cylinder body 6 is arranged in the pump cylinder body 6, and a pump spring 5 is sleeved at the position, located in the pump plunger 7, of the pump shaft 9. A pump return disc 8 which rotates along with the axial pump plunger 7 is arranged on the left side of the pump cylinder body 6; a pump swash plate 4 is arranged between the pump return disc 8 and the coupler 10, and the pump swash plate 4 is provided with an axial through hole 22 for the pump shaft 9 to pass through.
A motor cylinder 17 rotating with the motor shaft 16 is arranged between the motor shaft 16 and the motor housing 12, an axial motor plunger 13 rotating with the motor cylinder 17 is arranged in the motor cylinder 17, and a motor return disc 14 rotating with the axial motor plunger 13 is arranged on the left side of the motor cylinder 17; the motor shaft 16 is positioned in the motor plunger 13 and sleeved with a motor spring 18.
The inner surface of the motor rear end cover 19 is provided with a circular sealing ring groove 29, and the sealing ring groove 29 is provided with a sealing ring 30.
A motor swash plate 11 is arranged between the motor return disc 14 and the motor rear end cover 19, and the motor swash plate 11 is hemispherical.
The bottom of the motor swash plate 11 is in spherical contact with the inner surface of the motor rear end cover 19, the bottom of the motor swash plate 11 is provided with an axial bolt hole 25, an axial bolt 21 is inserted into the axial bolt hole 25 from the outer side of the motor rear end cover 19, and the axial bolt 21 moves up and down in the radial direction, so that the motor swash plate 11 rotates on the inner surface of the motor rear end cover 19, and the inclination angle of the motor swash plate 11 is adjusted;
the axial bolt 21 moves downwards, the inclination angle of the motor swash plate 11 is reduced, the inclination angle of the motor return plate 14 is reduced, the stroke of the plunger of the motor plunger 13 is shortened, the flow is reduced, and the system pressure is increased; the axial bolt 21 moves upward, the inclination angle of the motor swash plate 11 is increased, the inclination angle of the motor return plate 14 is increased, the plunger stroke of the motor plunger 13 is lengthened, the flow rate is increased, and the pressure is reduced.
The inner surface of the motor rear end cover 19 is provided with a radial guide rail groove 23, the swash plate bottom 11 is provided with a positioning pin 24, and the part of the positioning pin 24 extending out of the swash plate bottom 11 is arranged in the radial guide rail groove 23 and can slide up and down along the radial guide rail groove 23.
The outer side of the motor rear end cover 19 is provided with a radial headless limiting bolt 20 opposite to an axial bolt 21; the inclination angle of the motor swash plate 11 is adjusted by adjusting the up-down position of the axial bolt 21, and the axial bolt 21 is fixed by the radial stopper headless bolt 20.
The described embodiments of the present invention are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (9)

1. A pressure-adjustable plunger pump and energy recovery integrated machine comprises a plunger pump and a plunger motor which are connected with each other, wherein the plunger pump generates high pressure, and the plunger motor recovers energy, and is characterized by comprising a pump flange (1), a pump front end cover (2), a pump shell (3), a motor front end cover (15), a motor shell (12) and a motor rear end cover (19) which are sequentially connected from right to left, wherein a coupler (10) is arranged in the motor front end cover (15), the right side of the coupler (10) is connected with a pump shaft (9), and the left side of the coupler (10) is connected with a motor shaft (16); a pump cylinder body (6) rotating along with the pump shaft (9) is arranged between the pump shaft (9) and the pump shell (3), an axial pump plunger (7) rotating along with the pump cylinder body (6) is arranged in the pump cylinder body (6), and a pump return disc (8) rotating along with the axial pump plunger (7) is arranged on the left side of the pump cylinder body (6); a motor cylinder (17) rotating along with the motor shaft (16) is arranged between the motor shaft (16) and the motor shell (12), an axial motor plunger (13) rotating along with the motor cylinder (17) is arranged in the motor cylinder (17), and a motor return disc (14) rotating along with the axial motor plunger (13) is arranged on the left side of the motor cylinder (17); a motor swash plate (11) is arranged between the motor return disc (14) and the motor rear end cover (19), the bottom of the motor swash plate (11) is in spherical contact with the inner surface of the motor rear end cover (19), an axial bolt hole (25) is formed in the bottom of the motor swash plate (11), an axial bolt (21) is inserted into the axial bolt hole (25) from the outer side of the motor rear end cover (19), and the axial bolt (21) moves up and down in the radial direction, so that the motor swash plate (11) rotates on the inner surface of the motor rear end cover (19), and the inclination angle of the motor swash plate (11) is adjusted; the axial bolt (21) moves downwards, the inclination angle of the motor swash plate (11) is reduced, the inclination angle of the motor return plate (14) is reduced, the plunger stroke of the motor plunger (13) is shortened, the flow is reduced, and the system pressure is increased; the axial bolt (21) moves upwards, the inclination angle of the motor swash plate (11) is increased, the inclination angle of the motor return plate (14) is increased, the plunger stroke of the motor plunger (13) is lengthened, the flow is increased, and the pressure is reduced.
2. The pressure-adjustable integrated machine for plunger pump and energy recovery as claimed in claim 1, wherein the inner surface of the motor rear end cover (19) is provided with a radial guide groove (23), the bottom part (11) of the swash plate is provided with a positioning pin (24), and the part of the positioning pin (24) extending out of the bottom part (11) of the swash plate is arranged in the radial guide groove (23) and can slide up and down along the radial guide groove (23).
3. The integrated machine of the pressure-adjustable plunger pump and the energy recovery as claimed in claim 1, wherein a circular seal ring groove (29) is formed in the inner surface of the motor rear end cover (19), and a seal ring (30) is arranged in the seal ring groove (29).
4. The integrated machine of pressure-adjustable plunger pump and energy recovery as claimed in claim 1, characterized in that a radial headless limit bolt (20) is arranged on the outer side of the motor rear end cover (19) opposite to the axial bolt (21); the inclination angle of the motor swash plate (11) is adjusted by adjusting the vertical position of the axial bolt (21), and the axial bolt (21) is fixed by the radial limit headless bolt (20).
5. An integrated pressure-regulated plunger pump and energy recovery machine as claimed in claim 1, characterized in that said motor swash plate (11) is hemispherical.
6. The integrated pressure-adjustable plunger pump and energy recovery machine as claimed in claim 1, characterized in that a pump swash plate (4) is arranged between the pump return disc (8) and the coupling (10), and the pump swash plate (4) is provided with an axial through hole (22) for the pump shaft (9) to pass through.
7. An integrated pressure-adjustable plunger pump and energy recovery machine as claimed in claim 1, characterized in that said coupling (10) comprises a right coupling half (26), an elastomer (27) and a left coupling half (28).
8. The pressure-adjustable plunger pump and energy recovery all-in-one machine as claimed in claim 1, characterized in that the pump shaft (9) is sleeved with a pump spring (5) at a position in the pump plunger (7).
9. The integrated machine of pressure-adjustable plunger pump and energy recovery as claimed in claim 1, wherein the motor shaft (16) is sheathed with a motor spring (18) at a position inside the motor plunger (13).
CN202210351953.7A 2022-04-02 2022-04-02 Pressure-adjustable plunger pump and energy recovery integrated machine Pending CN114658628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210351953.7A CN114658628A (en) 2022-04-02 2022-04-02 Pressure-adjustable plunger pump and energy recovery integrated machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210351953.7A CN114658628A (en) 2022-04-02 2022-04-02 Pressure-adjustable plunger pump and energy recovery integrated machine

Publications (1)

Publication Number Publication Date
CN114658628A true CN114658628A (en) 2022-06-24

Family

ID=82035598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210351953.7A Pending CN114658628A (en) 2022-04-02 2022-04-02 Pressure-adjustable plunger pump and energy recovery integrated machine

Country Status (1)

Country Link
CN (1) CN114658628A (en)

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