US20110158841A1 - Screw Pump with Anti-Turbulent Structure - Google Patents

Screw Pump with Anti-Turbulent Structure Download PDF

Info

Publication number
US20110158841A1
US20110158841A1 US12/647,993 US64799309A US2011158841A1 US 20110158841 A1 US20110158841 A1 US 20110158841A1 US 64799309 A US64799309 A US 64799309A US 2011158841 A1 US2011158841 A1 US 2011158841A1
Authority
US
United States
Prior art keywords
housing
screw
mounting tube
rotors
around
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/647,993
Inventor
Ding-Kuey LIU
Chao-Hua TUNG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunny King Machinery Co Ltd
Original Assignee
Sunny King Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunny King Machinery Co Ltd filed Critical Sunny King Machinery Co Ltd
Priority to US12/647,993 priority Critical patent/US20110158841A1/en
Assigned to SUNNY KING MACHINERY CO., LTD. reassignment SUNNY KING MACHINERY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIU, DING-KUEY, TUNG, CHAO-HUA
Publication of US20110158841A1 publication Critical patent/US20110158841A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • the present invention relates to a screw pump, especially to a screw pump with an anti-turbulent structure to prevent pressurized fluid from becoming turbulent.
  • a pump transfers mechanical work to fluids, such as liquids or gases, to change states (ex: height, pressure . . . etc.) of the fluid to move the fluids.
  • a conventional screw pump ( 50 ) comprises a housing ( 51 ) having an inlet ( 511 ) and an outlet ( 512 ), and two screw rotors ( 52 ) axially and parallelly mounted rotatably through the housing ( 51 ).
  • Each screw rotor ( 52 ) has two threaded parts ( 521 ) respectively engaging the threaded parts ( 521 ) of the other screw rotor ( 52 ).
  • a confluence is defined between the threaded parts ( 521 ) of each screw rotor ( 52 ) and corresponds to the outlet ( 512 ) of the housing ( 52 ).
  • the present invention provides a screw pump with an anti-turbulent structure to mitigate or obviate the aforementioned problems.
  • the main objective of the present invention is to provide a screw pump with an anti-turbulent structure.
  • the screw pump has a housing, at least two screw rotors parallelly mounted through the housing and engaging with each other, and a partition disposed around the at least two screw rotor.
  • the partition may have at least two circular walls respectively formed around the rotors and an annular protrusion formed on an inner surface of the housing and being adjacent to and kept from contacting the at least two circular walls, and may be a panel having at least two mounting holes respectively mounted around the rotors.
  • Fluids flowing in opposite directions are divided by the partition and do not encounter each other and do not become turbulent. Consequently, pressurizing efficiency of the screw pump is improved.
  • FIG. 1 is a side view in partial section of a screw pump with an anti-turbulent structure in accordance with the present invention
  • FIG. 2 is a top view in partial section of the screw pump in FIG. 1 ;
  • FIG. 3 is a top view in partial section of another embodiment of a screw pump with an anti-turbulent structure in accordance with the present invention.
  • FIG. 4 is a cross-sectional end view of the screw pump in FIG. 3 ;
  • FIG. 5 is a side view in partial section of a conventional screw pump in accordance with the prior art.
  • a screw pump with an anti-turbulent structure in accordance with the present invention comprises a housing ( 10 ), at least two screw rotors ( 20 ) and a partition ( 30 A, 30 B).
  • the housing ( 10 ) is substantially cylindrical and has a mounting tube ( 11 ), an inlet ( 12 ) and an outlet ( 13 ).
  • the mounting tube ( 11 ) is axially formed on an inner surface of the housing ( 10 ) and has an annular recess ( 111 ).
  • the annular recess ( 111 ) is formed in and around an inner wall of the mounting tube ( 11 ).
  • the inlet ( 12 ) is formed in and communicates with the housing ( 10 ).
  • the outlet ( 13 ) is formed in and communicates with the housing ( 10 ), may be formed in the housing ( 10 ) and the mounting tube ( 11 ), may be communicates with the mounting tube ( 11 ) and may correspond to the annular recess ( 111 ) of mounting tube ( 11 ).
  • the at least two screw rotors ( 20 ) are axially and parallelly mounted rotatably through the housing ( 10 ) and may be mounted through the mounting tube ( 11 ).
  • Each screw rotor ( 20 ) has two threaded parts ( 22 ).
  • the threaded parts ( 22 ) are formed around the screw rotor ( 20 ) and are respectively right-hand threaded and left-hand threaded.
  • Each threaded part ( 22 ) engages a corresponding threaded part ( 22 ) of the other one of the at least two screw rotors ( 20 ).
  • a confluence is defined between the threaded parts ( 22 ) of the at least two screw rotors ( 20 ).
  • the threaded parts ( 22 ) force the fluids from two opposite ends of the housing ( 10 ) or from two opposite ends of the mounting tube ( 11 ) toward the confluence and pressurize the fluids.
  • the partition ( 30 A, 30 B) is mounted in the housing ( 10 ), may be mounted in the mounting tube ( 11 ), is disposed around the at least two screw rotors ( 20 ) and between the threaded parts ( 22 ) of each screw rotor ( 20 ) and divides the confluence into two individual spaces. Therefore, the pressurized fluids flowing in opposite directions respectively flow along the partition ( 30 A, 30 B) and out of the housing ( 10 ) from the outlet ( 13 ).
  • the partition ( 30 A) may have at least two circular walls ( 31 A) and an annular protrusion ( 32 A).
  • the at least two circular walls ( 31 A) are respectively formed around the at least two screw rotors ( 20 ) and are adjacent to and are kept from contacting each other.
  • the annular protrusion ( 32 A) is formed on the inner wall of the mounting tube ( 11 ) in the annular recess ( 111 ) and is adjacent to and is kept from contacting the at least two circular walls ( 31 A) so the at least two rotors ( 20 ) can rotate smoothly.
  • the partition ( 30 B) may be a panel, may be composed of two halves ( 30 B′) and has at least two mounting holes ( 33 B).
  • the at least two mounting holes ( 33 B) are formed through the partition ( 30 B) and are respectively mounted around the at least two rotors ( 20 ).
  • Each mounting hole ( 33 B) has an inner edge.
  • the inner edge of the mounting hole ( 33 B) is defined around the mounting holes ( 33 B) and is adjacent to and is kept from contacting a corresponding one of the at least two screw rotors ( 20 ) so the at least two rotors ( 20 ) can rotate smoothly.
  • the screw pump with anti-turbulent structure as described has the following advantage. Since the partition ( 30 A, 30 B) divides the confluence into two individual spaces, the fluids flow in opposite directions do not encounter each other and do not become turbulent in the confluence. Consequently, pressurizing efficiency of the screw pump is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

A screw pump with anti-turbulent structure has a housing, at least two screw rotors parallelly mounted through the housing and engaging with each other, and a partition disposed around the at least two screw rotor. The partition may have at least two circular walls respectively formed around the rotors and an annular protrusion formed on an inner surface of the housing and being adjacent to and kept from contacting the at least two circular walls, and may be a panel having at least two mounting holes respectively mounted around the rotors. Fluids flowing in opposite directions are divided by the partition and do not encounter each other and do not become turbulent. Consequently, pressurizing efficiency of the screw pump is improved.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a screw pump, especially to a screw pump with an anti-turbulent structure to prevent pressurized fluid from becoming turbulent.
  • 2. Description of the Prior Art(s) A pump transfers mechanical work to fluids, such as liquids or gases, to change states (ex: height, pressure . . . etc.) of the fluid to move the fluids.
  • With reference to FIG. 5, a conventional screw pump (50) comprises a housing (51) having an inlet (511) and an outlet (512), and two screw rotors (52) axially and parallelly mounted rotatably through the housing (51). Each screw rotor (52) has two threaded parts (521) respectively engaging the threaded parts (521) of the other screw rotor (52). Thus, when one of the screw rotor (52) is rotated, the other screw rotor (52) rotates simultaneously. A confluence is defined between the threaded parts (521) of each screw rotor (52) and corresponds to the outlet (512) of the housing (52). When the fluids flow through the inlet (511) and into the housing (51) and one of the screw rotor (52) is driven by a motor, the threaded parts (521) of the screw rotors (52) force the fluid toward the confluence and flow out of the housing (51) from the outlet (512).
  • However, since the threaded parts (521) of the screw rotors (52) move the fluids in reverse directions, the fluids encounter each other and become turbulent in the confluence of the rotors (52). Thus, pressures of the fluids are reduced and pressurizing efficiency of the conventional screw pump (50) is low and cannot be efficiently raised.
  • To overcome the shortcomings, the present invention provides a screw pump with an anti-turbulent structure to mitigate or obviate the aforementioned problems.
    • SUMMARY OF THE INVENTION
  • The main objective of the present invention is to provide a screw pump with an anti-turbulent structure.
  • The screw pump has a housing, at least two screw rotors parallelly mounted through the housing and engaging with each other, and a partition disposed around the at least two screw rotor. The partition may have at least two circular walls respectively formed around the rotors and an annular protrusion formed on an inner surface of the housing and being adjacent to and kept from contacting the at least two circular walls, and may be a panel having at least two mounting holes respectively mounted around the rotors.
  • Fluids flowing in opposite directions are divided by the partition and do not encounter each other and do not become turbulent. Consequently, pressurizing efficiency of the screw pump is improved.
  • Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a side view in partial section of a screw pump with an anti-turbulent structure in accordance with the present invention;
  • FIG. 2 is a top view in partial section of the screw pump in FIG. 1;
  • FIG. 3 is a top view in partial section of another embodiment of a screw pump with an anti-turbulent structure in accordance with the present invention;
  • FIG. 4 is a cross-sectional end view of the screw pump in FIG. 3; and
  • FIG. 5 is a side view in partial section of a conventional screw pump in accordance with the prior art.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • With reference to FIGS. 1 to 3, a screw pump with an anti-turbulent structure in accordance with the present invention comprises a housing (10), at least two screw rotors (20) and a partition (30A, 30B).
  • The housing (10) is substantially cylindrical and has a mounting tube (11), an inlet (12) and an outlet (13). The mounting tube (11) is axially formed on an inner surface of the housing (10) and has an annular recess (111). The annular recess (111) is formed in and around an inner wall of the mounting tube (11). The inlet (12) is formed in and communicates with the housing (10). The outlet (13) is formed in and communicates with the housing (10), may be formed in the housing (10) and the mounting tube (11), may be communicates with the mounting tube (11) and may correspond to the annular recess (111) of mounting tube (11).
  • The at least two screw rotors (20) are axially and parallelly mounted rotatably through the housing (10) and may be mounted through the mounting tube (11). Each screw rotor (20) has two threaded parts (22). The threaded parts (22) are formed around the screw rotor (20) and are respectively right-hand threaded and left-hand threaded. Each threaded part (22) engages a corresponding threaded part (22) of the other one of the at least two screw rotors (20).
  • A confluence is defined between the threaded parts (22) of the at least two screw rotors (20). Thus, as one of the at least two rotors (20) rotates, the other of the at least two screw rotors (20) rotates simultaneously. When fluids flow through the inlet (12) and into the housing (10) and one of the at least two screw rotors (20) is driven by a motor, the threaded parts (22) force the fluids from two opposite ends of the housing (10) or from two opposite ends of the mounting tube (11) toward the confluence and pressurize the fluids.
  • The partition (30A, 30B) is mounted in the housing (10), may be mounted in the mounting tube (11), is disposed around the at least two screw rotors (20) and between the threaded parts (22) of each screw rotor (20) and divides the confluence into two individual spaces. Therefore, the pressurized fluids flowing in opposite directions respectively flow along the partition (30A, 30B) and out of the housing (10) from the outlet (13).
  • The partition (30A) may have at least two circular walls (31A) and an annular protrusion (32A). The at least two circular walls (31A) are respectively formed around the at least two screw rotors (20) and are adjacent to and are kept from contacting each other. The annular protrusion (32A) is formed on the inner wall of the mounting tube (11) in the annular recess (111) and is adjacent to and is kept from contacting the at least two circular walls (31A) so the at least two rotors (20) can rotate smoothly.
  • With further reference to FIGS. 3 and 4, the partition (30B) may be a panel, may be composed of two halves (30B′) and has at least two mounting holes (33B). The at least two mounting holes (33B) are formed through the partition (30B) and are respectively mounted around the at least two rotors (20). Each mounting hole (33B) has an inner edge. The inner edge of the mounting hole (33B) is defined around the mounting holes (33B) and is adjacent to and is kept from contacting a corresponding one of the at least two screw rotors (20) so the at least two rotors (20) can rotate smoothly.
  • The screw pump with anti-turbulent structure as described has the following advantage. Since the partition (30A, 30B) divides the confluence into two individual spaces, the fluids flow in opposite directions do not encounter each other and do not become turbulent in the confluence. Consequently, pressurizing efficiency of the screw pump is improved.
  • Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims (4)

1. A screw pump comprising
a housing having
an inlet formed in and communicating the housing; and
an outlet formed in and communicating the housing;
at least two screw rotors axially and parallelly mounted rotatably through the housing, each screw rotor having two threaded parts formed around the screw rotor and being respectively right-hand threaded and left-hand threaded, and each threaded part engaging a corresponding threaded part of the other one of the at least two screw rotors; and
a partition mounted in the housing, disposed around the at least two screw rotors and between the threaded parts of each screw rotor and having at least two circular walls respectively formed around the at least two screw rotors and being adjacent to and kept from contacting each other.
2. The screw pump as claimed in claim 1, wherein
the housing further has a mounting tube axially formed on an inner surface of the housing and having an annular recess formed in and around an inner wall of the mounting tube;
the outlet of the housing is formed in the housing and the mounting tube and communicates with the mounting tube and corresponds to the annular recess of the mounting tube;
the at least two screw rotors are mounted through the mounting tube; and
the partition is mounted in the mounting tube and further has an annular protrusion formed on the inner wall of the mounting tube in the annular recess and being adjacent to and kept from contacting the at least two circular walls.
3. A screw pump comprising
a housing having
an inlet formed in and communicating the housing; and
an outlet formed in and communicating the housing;
at least two screw rotor axially and parallelly mounted rotatably through the housing, each screw rotor having two threaded parts formed around the screw rotor and being respectively right-hand threaded and left-hand threaded, and each threaded part engaging a corresponding threaded part of the other one of the at least two screw rotors; and
a partition mounted in the housing, disposed around the at least two screw rotors and between the threaded parts of each screw rotor, being a panel having at least two mounting holes formed through the partition and respectively mounted around the at least two rotors, and each mounting hole having an inner edge respectively defined around the mounting holes and being adjacent to and kept from contacting a corresponding one of the at least two screw rotors.
4. The screw pump as claimed in claim 1, wherein
the housing further has a mounting tube axially formed on an inner surface of the housing and having an annular recess formed in and around an inner wall of the mounting tube;
the outlet of the housing is formed in the housing and the mounting tube and communicates with the mounting tube and corresponds to the annular recess of the mounting tube; and
the at least two screw rotors are mounted through the mounting tube.
US12/647,993 2009-12-28 2009-12-28 Screw Pump with Anti-Turbulent Structure Abandoned US20110158841A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/647,993 US20110158841A1 (en) 2009-12-28 2009-12-28 Screw Pump with Anti-Turbulent Structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/647,993 US20110158841A1 (en) 2009-12-28 2009-12-28 Screw Pump with Anti-Turbulent Structure

Publications (1)

Publication Number Publication Date
US20110158841A1 true US20110158841A1 (en) 2011-06-30

Family

ID=44187803

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/647,993 Abandoned US20110158841A1 (en) 2009-12-28 2009-12-28 Screw Pump with Anti-Turbulent Structure

Country Status (1)

Country Link
US (1) US20110158841A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014131392A1 (en) * 2013-03-01 2014-09-04 Netzsch Pumpen & Systeme Gmbh Screw pump
EP3467314A3 (en) * 2012-06-28 2019-04-17 Sterling Industry Consult GmbH Screw pump
US11149732B2 (en) * 2017-11-02 2021-10-19 Carrier Corporation Opposed screw compressor having non-interference system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430894A (en) * 1920-04-13 1922-10-03 William E Quimby Inc Screw pump
US1701166A (en) * 1927-06-07 1929-02-05 Sinclair Refining Co Hot-oil pump
US2659239A (en) * 1949-10-07 1953-11-17 Jarvis C Marble Independent synchronization
US3467300A (en) * 1967-02-06 1969-09-16 Svenska Rotor Maskiner Ab Two-stage compressor
US3804565A (en) * 1961-09-27 1974-04-16 Laval Turbine Screw pumps
US5348453A (en) * 1990-12-24 1994-09-20 James River Corporation Of Virginia Positive displacement screw pump having pressure feedback control
US5624249A (en) * 1993-05-19 1997-04-29 Joh. Heinrich Bornemann Gmbh & Co. Kg Pumping process for operating a multi-phase screw pump and pump
US6093009A (en) * 1999-02-17 2000-07-25 Jacks, Jr.; Morris G. Apparatus and method for controlling angular relation between two rotating shafts
US20040191102A1 (en) * 2003-03-25 2004-09-30 Mccormick Duane C. Discharge diffuser for screw compressor
US20100040499A1 (en) * 2008-08-14 2010-02-18 General Electric Company Screw pump rotors and ring seals for screw pump rotors

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430894A (en) * 1920-04-13 1922-10-03 William E Quimby Inc Screw pump
US1701166A (en) * 1927-06-07 1929-02-05 Sinclair Refining Co Hot-oil pump
US2659239A (en) * 1949-10-07 1953-11-17 Jarvis C Marble Independent synchronization
US3804565A (en) * 1961-09-27 1974-04-16 Laval Turbine Screw pumps
US3467300A (en) * 1967-02-06 1969-09-16 Svenska Rotor Maskiner Ab Two-stage compressor
US5348453A (en) * 1990-12-24 1994-09-20 James River Corporation Of Virginia Positive displacement screw pump having pressure feedback control
US5624249A (en) * 1993-05-19 1997-04-29 Joh. Heinrich Bornemann Gmbh & Co. Kg Pumping process for operating a multi-phase screw pump and pump
US6093009A (en) * 1999-02-17 2000-07-25 Jacks, Jr.; Morris G. Apparatus and method for controlling angular relation between two rotating shafts
US20040191102A1 (en) * 2003-03-25 2004-09-30 Mccormick Duane C. Discharge diffuser for screw compressor
US20100040499A1 (en) * 2008-08-14 2010-02-18 General Electric Company Screw pump rotors and ring seals for screw pump rotors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3467314A3 (en) * 2012-06-28 2019-04-17 Sterling Industry Consult GmbH Screw pump
WO2014131392A1 (en) * 2013-03-01 2014-09-04 Netzsch Pumpen & Systeme Gmbh Screw pump
CN105121854A (en) * 2013-03-01 2015-12-02 耐驰泵及系统有限公司 Screw pump
US9869314B2 (en) 2013-03-01 2018-01-16 Netzsch Pumpen & Systeme Gmbh Screw pump
US11149732B2 (en) * 2017-11-02 2021-10-19 Carrier Corporation Opposed screw compressor having non-interference system

Similar Documents

Publication Publication Date Title
JP5583658B2 (en) Apparatus comprising a rotary piston that can be used as a compressor, pump, vacuum pump, turbine, and motor and as other driven and driven hydraulic-pneumatic machines
US20150337665A1 (en) Low-Turbulence Impeller for a Fluid Pump
RU98498U1 (en) SUBMERSIBLE CENTRIFUGAL PUMP FOR PUMPING AGGRESSIVE LIQUIDS
US20110158841A1 (en) Screw Pump with Anti-Turbulent Structure
CN105508208A (en) Piezoelectric pump
KR20160068648A (en) Axially split pump
ATE434135T1 (en) POND PUMP
CN105715552B (en) A kind of adjustable centrifugal dirty water pump impeller of impeller
CN101117958A (en) Rotary plate-type air compressor
CN112283120B (en) Water pump module
JP6625360B2 (en) pump
CN109404276B (en) Double-acting vane pump
CN208294758U (en) The electricity fork duplex gear pump pump housing
JP4157841B2 (en) Pump using waste tires
CN206360883U (en) GR high pressure screw pumps
WO2018082066A1 (en) Pipeline diaphragm pump
JP2014219023A (en) Non-contact annular seal
CN102619748A (en) Concave cam and convex cam rotary variable capacity pump
KR20040006452A (en) Improved impeller for self-primimg pump, assembly structure thereof and self-primimg pump containing the same
KR200324990Y1 (en) Impeller having plural stages for selfprimimg pump
KR200446282Y1 (en) Gear pump capable of being fixed in multi-direction
CN200978806Y (en) Highly effective double-suction split centrifugal pump with multiple-sealing form and easily for maintaining
JP6393386B2 (en) Non-contact annular seal
CN206801958U (en) A kind of attachment structure of pressurized tank and water pump
CN202140307U (en) Single-shaft double-chamber screw pump

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION