CN109973379B - Three-screw mixed transportation pump - Google Patents

Three-screw mixed transportation pump Download PDF

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Publication number
CN109973379B
CN109973379B CN201910221713.3A CN201910221713A CN109973379B CN 109973379 B CN109973379 B CN 109973379B CN 201910221713 A CN201910221713 A CN 201910221713A CN 109973379 B CN109973379 B CN 109973379B
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CN
China
Prior art keywords
cavity
inner cavity
screw
outer cavity
left end
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.)
Expired - Fee Related
Application number
CN201910221713.3A
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Chinese (zh)
Other versions
CN109973379A (en
Inventor
唐倩
范小杰
张元勋
刘宗敏
刘威
梁平华
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Chongqing University
Original Assignee
Chongqing University
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 Chongqing University filed Critical Chongqing University
Priority to CN201910221713.3A priority Critical patent/CN109973379B/en
Publication of CN109973379A publication Critical patent/CN109973379A/en
Application granted granted Critical
Publication of CN109973379B publication Critical patent/CN109973379B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • 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
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • 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
    • 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
    • F04C2/165—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 having more than two rotary pistons with parallel axes

Abstract

The invention discloses a three-screw mixing and conveying pump which comprises an outer cavity and an inner cavity, wherein the inner cavity is arranged in the outer cavity, a sealing cavity is arranged between the outer cavity and the inner cavity, and the outer cavity is provided with an outer cavity liquid medium inlet, an outer cavity solid medium inlet and an outer cavity mixed medium outlet; the inner cavity is internally provided with a three-screw conveying module, the outer surface of the inner cavity is provided with stirring blades which are arranged in the sealed cavity, an inner cavity mixed medium inlet and an inner cavity mixed medium outlet are sequentially arranged on the inner cavity from left to right, the inner cavity mixed medium inlet, the outer cavity liquid medium inlet and the outer cavity solid medium inlet are communicated with each other, and the inner cavity mixed medium outlet is communicated with the outer cavity mixed medium outlet; the outer surface of the inner cavity is annularly provided with a blocking plate, and the edge shape of the blocking plate is just attached to the shape of the inner wall of the outer cavity. The three-screw mixing pump can realize the conveying of two media, namely solid and liquid.

Description

Three-screw mixed transportation pump
Technical Field
The invention relates to the field of conveying devices, in particular to a three-screw mixing and conveying pump.
Background
The main conveying devices on the market are mainly used for single media, and the conveying structure is generally large in volume. However, in the fields of food, chemical industry, and the like, there is an increasing demand for a multi-functional mixing and transporting apparatus. For some special fields, the device is also required to be small enough in overall size and relatively large in delivery flow. Based on the above, the invention aims to provide a mixed conveying device with adjustable flow and small volume under two media, namely solid and liquid, from the aspects of requirements and technology, and solves the problems of single conveying medium, fixed flow and large volume in most of the prior conveying mediums.
Therefore, the technical personnel in the field are dedicated to develop a three-screw mixing pump for conveying two media, namely solid and liquid.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the present invention is to provide a three-screw mixing pump for conveying two solid and liquid media.
In order to achieve the purpose, the invention provides a three-screw mixing and conveying pump which comprises an outer cavity and an inner cavity, wherein the inner cavity is arranged in the outer cavity, a sealing cavity is arranged between the outer cavity and the inner cavity, and the outer cavity is provided with an outer cavity liquid medium inlet, an outer cavity solid medium inlet and an outer cavity mixed medium outlet; the inner cavity is internally provided with a three-screw conveying module, and the outer surface of the inner cavity is provided with stirring blades which are arranged in the sealed cavity;
an inner cavity mixed medium inlet and an inner cavity mixed medium outlet are sequentially arranged on the inner cavity from left to right, the inner cavity mixed medium inlet, the outer cavity liquid medium inlet and the outer cavity solid medium inlet are communicated with each other, and the inner cavity mixed medium outlet is communicated with the outer cavity mixed medium outlet; the outer surface of the inner cavity is annularly provided with a blocking plate, and the edge shape of the blocking plate is just attached to the shape of the inner wall of the outer cavity.
Preferably, the outer cavity and the inner cavity are connected through a third bearing.
Preferably, the three-screw conveying module comprises a main screw and two slave screws, the left shaft end of the main screw is fixedly connected with the outer cavity, the main screw is arranged between the two slave screws, and the surfaces of the two slave screws are meshed with the surface of the main screw.
Preferably, the right end face of the inner cavity is provided with an inner cavity right connecting cover, and the inner cavity right connecting cover is connected with the inner cavity right end cover; the right ends of the main screw and the two slave screws penetrate through the inner cavity right connecting cover and are arranged in the inner cavity right end cover, first bearings are arranged between the right shaft ends of the main screw and the two slave screws and the inner cavity right end cover, and first shaft rings are arranged between the right shaft ends of the main screw and the two slave screws and the inner cavity right connecting cover; the right-hand member of outer cavity is provided with outer cavity right-hand member lid, the main shaft end of interior cavity right-hand member lid passes outer cavity right-hand member lid, be connected through elastic coupling between the main shaft end of interior cavity right-hand member lid and the motor.
Preferably, the elastic coupling is a quincuncial elastic coupling.
Preferably, the flange plate at the right end of the outer cavity is connected with the right end cover of the outer cavity through a screw, and the inner cavity is surrounded and arranged in the outer cavity.
Preferably, the left shaft end of the main screw rod passes through the inner cavity left end cover and is fixedly connected with the outer cavity, the left shaft end of the slave screw rod is arranged in the inner cavity left end cover, the main screw rod and the two left shaft ends of the slave screw rods are provided with second bearings between the inner cavity left end cover, and the main screw rod and the two left shaft ends of the slave screw rods are provided with second collars between the left ends of the inner cavity.
Preferably, screw mounting screws are arranged on the left sides of the two slave screws, nail heads of the screw mounting screws are arranged in the inner cavity left end cover and vertically abutted against the left end face of the slave screw, and nail caps of the screw mounting screws are located on the left side of the inner cavity left end cover.
Preferably, a pin hole is formed in a left end shaft of the main screw rod, a shaft hole is formed in the left end of the outer cavity, and the main screw rod and the outer cavity are fixedly connected through a cylindrical pin through the shaft hole and the pin hole.
Preferably, the left end cover of the inner cavity is connected with the flange plate at the left end of the inner cavity through a screw; the right end cover of the inner cavity, the right connecting cover of the inner cavity and the flange plate at the right end of the inner cavity are connected through screws.
The invention has the beneficial effects that: the three-screw mixing pump not only realizes the functions of stirring, mixing and conveying different solid and liquid media; meanwhile, the structure is compact, the fixing, supporting and the like of main working parts of each module also accord with the design principle, the stability is high, and the three-screw mixing and conveying pump can be small in size; two operations can be completed by only using one motor, and the mixing speed and the conveying capacity can be simultaneously controlled by adjusting the rotating speed of the motor; the three-screw mixing pump with small volume can also achieve large-flow conveying under small volume.
Drawings
Fig. 1 is a schematic structural view of a three-screw mixing pump according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a three-screw mixing pump (not shown in the outer cavity) according to an embodiment of the present invention.
Detailed Description
the structural features of the respective parts of the present invention will be described in detail below, and if directions (up, down, left, right, front, and rear) are described, the structure shown in fig. 1 and 2 will be referred to for description, but the practical use direction of the present invention is not limited thereto. The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
As shown in fig. 1 and 2, an embodiment of the invention discloses a three-screw mixing and conveying pump, which comprises an outer cavity 1 and an inner cavity 2, wherein the inner cavity 2 is arranged in the outer cavity 1, a sealing cavity a is arranged between the outer cavity 1 and the inner cavity 2, and the outer cavity 1 is provided with an outer cavity liquid medium inlet 1a, an outer cavity solid medium inlet 1b and an outer cavity mixed medium outlet 1 c; a three-screw conveying module is arranged in the inner cavity 2, a stirring blade 3 is arranged on the outer surface of the inner cavity 2, and the stirring blade 3 is arranged in the sealing cavity A;
an inner cavity mixed medium inlet 2a and an inner cavity mixed medium outlet 2b are sequentially arranged on the inner cavity 2 from left to right, the inner cavity mixed medium inlet 2a, the outer cavity liquid medium inlet 1a and the outer cavity solid medium inlet 1b are communicated with each other, and the inner cavity mixed medium outlet 2b is communicated with the outer cavity mixed medium outlet 1 c; the outer surface of the inner cavity 2 is annularly provided with a blocking plate 4, and the edge shape of the blocking plate 4 is just attached to the shape of the inner wall of the outer cavity 1. The barrier plate 4 divides the sealing cavity A into a left sealing cavity and a right sealing cavity so as to separate the solid-liquid medium which is not uniformly mixed from the solid-liquid medium which is uniformly mixed; liquid medium is put into from outer cavity body liquid medium entry and is got into left seal chamber, and solid powder is put into from outer cavity body solid medium entry and is got into left seal chamber, carries out preliminary mixing through stirring vane, and the mixed medium entry gets into three screws and carries out the material transport in the rethread, flows into right seal chamber from interior cavity body mixing outlet again to export from outer cavity body mixed medium export. The three-screw mixing and conveying pump realizes the functions of stirring, mixing and conveying different solid and liquid media.
In this embodiment, the outer chamber 1 and the inner chamber 2 are coaxially connected, i.e. assembled along the same centre line.
In this embodiment, the three-screw conveying module comprises a main screw 5 and two slave screws 6, the left shaft end of the main screw 5 is fixedly connected with the outer cavity, the main screw 5 is arranged between the two slave screws 6, and the surfaces of the two slave screws 6 are meshed with the surface of the main screw. The three-screw conveying module is arranged in the inner cavity and utilizes the rotation of the screw to suck and discharge liquid.
In this embodiment, the right end face of the inner cavity 2 is provided with an inner cavity right connecting cover 2c, and the inner cavity right connecting cover 2c is connected with an inner cavity right end cover 7; the right ends of the main screw 5 and the two slave screws 6 penetrate through the inner cavity right connecting cover 2c and are arranged in the inner cavity right end cover 7, a first bearing 8a is arranged between the right shaft ends of the main screw 5 and the two slave screws 6 and the inner cavity right end cover 7, and a first shaft ring 9a is arranged between the right shaft ends of the main screw 5 and the two slave screws 6 and the inner cavity right connecting cover 2 c; the right end of the outer cavity 1 is provided with an outer cavity right end cover 11, the spindle end of the inner cavity right end cover 7 penetrates through the outer cavity right end cover 11, and the spindle end of the inner cavity right end cover 7 is connected with the motor 12 through an elastic coupling 16. In other embodiments, the first bearing 8a is, for example, a deep groove ball bearing, but not limited thereto; the first collar 9a is, for example, a screw collar, but not limited thereto.
In this embodiment, the flange at the right end of the outer cavity 1 is connected with the right end cover 11 of the outer cavity through screws, and the inner cavity 2 is surrounded and arranged in the outer cavity 1.
In this embodiment, the left shaft end of the main screw 5 passes through the inner cavity left end cover 10 and is fixedly connected with the outer cavity, the left shaft ends of the two slave screws 6 are arranged in the inner cavity left end cover 10, the second bearings 8b are arranged between the left shaft ends of the main screw 5 and the two slave screws 6 and the inner cavity left end cover 10, and the second collars 9b are arranged between the left shaft ends of the main screw 5 and the two slave screws 6 and the left end of the inner cavity 1. In other embodiments, the second bearing 8b is, for example, a deep groove ball bearing, but not limited thereto; the second collar 9b is, for example, a screw collar, but not limited thereto. The structure is more compact, the main working parts of each module are fixed and supported according to the design principle, the stability is high, and the three-screw mixing and conveying pump can be small in size.
In this embodiment, the first collar 9a and the second collar 9b are symmetrically disposed at the left and right ends of the inner cavity 1, and the number of the first collar 9a and the number of the second collar 9b at the left and right ends of the inner cavity are 3.
In the present embodiment, the right shaft ends of the master screw 5 and the two slave screws 6 are each provided with 2 first bearings 8a in an overlapping manner, and the left shaft ends of the master screw 5 and the two slave screws 6 are each provided with 2 second bearings 8b in an overlapping manner. The total number of the first bearings 8a is 6, and the total number of the second bearings is 6.
In the present embodiment, two slave screws 6 are provided with screw mounting screws 17 on the left side, the heads of the screw mounting screws 17 are provided in the inner cavity left end cover 10 and vertically abut against the left end face of the slave screw 6, and the head of the screw mounting screw 17 is located on the left side of the inner cavity left end cover 10. And a screw rod mounting screw is arranged for adjusting the axial position of the slave screw rod during mounting, so that the standard meshing of the slave screw rod and the main screw rod is realized.
In this embodiment, a pin hole 13 is axially disposed at the left end of the main screw rod 5, a shaft hole 14 is disposed at the left end of the outer cavity 1, and the main screw rod 5 and the outer cavity 1 are fixedly connected by the shaft hole 14 and the pin hole 13 through a cylindrical pin.
In the present embodiment, the outer cavity 1 and the inner cavity 2 are connected by a third bearing 15, and the third bearing 15 is, for example, a deep groove ball bearing, but not limited thereto.
In this embodiment, the third bearing 15 is enclosed on the outer surface of the inner cavity left end cover 10 and the inner cavity right end cover 7 and is located on the inner surface of the outer cavity.
In the present embodiment, the resilient coupling 16 is a torx coupling.
In the present embodiment, two pairs of stirring vanes 3 are symmetrically disposed on the outer surface of the inner cavity 2.
In the embodiment, the left end cover 10 of the inner cavity is connected with the flange plate at the left end of the inner cavity 2 through screws; the right end cover 7 of the inner cavity, the right connecting cover 2c of the inner cavity and the flange plate at the right end of the inner cavity 2 are connected through screws. Wherein the screws used on the inner cavity left end cover 10 and the inner cavity right end cover 7 are symmetrically distributed, and in some embodiments, the number of the screws on the inner cavity left end cover 10 and the inner cavity right end cover 7 is 24 respectively.
According to the three-screw mixed delivery pump, when the three-screw mixed delivery pump works, the cavity is fixed on the rack, the motor transmits power to the right end cover of the inner cavity through the elastic coupling and is connected through the screw of the inner cavity, and the whole inner cavity, the left end cover of the inner cavity, the right connecting cover of the inner cavity and the screw rotate along the axis of the main screw; the outer surface of the inner cavity is provided with stirring blades, when solid powder media enter from the solid medium inlet of the outer cavity, and liquid media enter from the liquid medium inlet of the outer cavity, the two media are stirred uniformly by the rotation of the stirring blades on the inner cavity and are conveyed to the mixed medium inlet of the inner cavity on the surface of the inner cavity, so that the functions of stirring and mixing uniformly are completed;
Then, the outer cavity and the main screw are fixed together by the cylindrical pin, so the left shaft end of the main screw is fixed, and the inner cavity left end cover with two sides of the inner cavity and two pairs of third bearings on the inner cavity right end cover only play a supporting role and are not fixed, according to the shape of the inner cavity, the inner wall of the inner cavity pushes the slave screw to rotate, thereby achieving the effect of relative meshing motion of the three screws, according to the design of the rotation direction, the top diameter and the lead of the screws and the characteristics of the three screws, the mixed medium in the inner cavity is conveyed from the left end to the right end, the outer cavity and the inner cavity form a left end sealed cavity and a right end sealed cavity by a baffle plate, the left end sealed cavity uniformly mixes the solid and liquid media by the action of a stirring blade and conveys the solid and liquid media to the inner cavity mixed medium inlet, and after stable transportation processing by the three-screw conveying module, the mixed medium is conveyed to the, thereby outputting the mixed medium from the sealing cavity at the right end of the inner cavity through the mixed medium outlet of the outer cavity to finish the conveying function of the screw.
The three-screw mixing pump not only realizes the functions of stirring, mixing and conveying different solid and liquid media; meanwhile, the structure is compact, the fixing, supporting and the like of main working parts of each module also accord with the design principle, the stability is high, and the three-screw mixing and conveying pump can be small in size; two operations can be completed by only using one motor, and the mixing speed and the conveying capacity can be simultaneously controlled by adjusting the rotating speed of the motor; the three-screw mixing pump with small volume can also achieve large-flow conveying under small volume.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A three-screw mixing transmission pump is characterized in that: the device comprises an outer cavity (1) and an inner cavity (2), wherein the inner cavity (2) is arranged in the outer cavity (1), a sealing cavity (A) is arranged between the outer cavity (1) and the inner cavity (2), and the outer cavity (1) is provided with an outer cavity liquid medium inlet (1 a), an outer cavity solid medium inlet (1 b) and an outer cavity mixed medium outlet (1 c); a three-screw conveying module is arranged in the inner cavity (2), a stirring blade (3) is arranged on the outer surface of the inner cavity (2), and the stirring blade (3) is arranged in the sealed cavity (A);
An inner cavity mixed medium inlet (2 a) and an inner cavity mixed medium outlet (2 b) are sequentially arranged on the inner cavity (2) from left to right, the inner cavity mixed medium inlet (2 a), the outer cavity liquid medium inlet (1 a) and the outer cavity solid medium inlet (1 b) are communicated with each other, and the inner cavity mixed medium outlet (2 b) is communicated with the outer cavity mixed medium outlet (1 c); the outer surface ring of interior cavity (2) is equipped with baffler (4), the marginal shape of baffler (4) with outer cavity (1) inner wall shape just laminates.
2. The three-screw multiphase pump according to claim 1, wherein: the outer cavity (1) is connected with the inner cavity (2) through a third bearing (15).
3. The three-screw multiphase pump according to claim 1, wherein: the three-screw conveying module comprises a main screw (5) and two slave screws (6), the left shaft end of the main screw (5) is fixedly connected with the outer cavity, the main screw (5) is arranged between the two slave screws (6), and the surfaces of the two slave screws (6) are meshed with the surface of the main screw.
4. the three-screw multiphase pump according to claim 3, wherein: the right end face of the inner cavity (2) is provided with an inner cavity right connecting cover (2 c), and the inner cavity right connecting cover (2 c) is connected with an inner cavity right end cover (7); the right ends of the main screw (5) and the two slave screws (6) penetrate through the inner cavity right connecting cover (2 c) and are arranged in the inner cavity right end cover (7), a first bearing (8 a) is arranged between the right shaft ends of the main screw (5) and the two slave screws (6) and the inner cavity right end cover (7), and a first shaft ring (9 a) is arranged between the right shaft ends of the main screw (5) and the two slave screws (6) and the inner cavity right connecting cover (2 c); the right-hand member of outer cavity (1) is provided with outer cavity right-hand member lid (11), the main shaft end of interior cavity right-hand member lid (7) passes outer cavity right-hand member lid (11), be connected through elastic coupling (16) between the main shaft end of interior cavity right-hand member lid (7) and motor (12).
5. The three-screw multiphase pump according to claim 4, wherein: the elastic coupling (16) is a quincuncial elastic coupling.
6. The three-screw multiphase pump according to claim 4, wherein: the flange plate at the right end of the outer cavity (1) is connected with the right end cover (11) of the outer cavity through screws, and the inner cavity (2) is surrounded and arranged in the outer cavity (1).
7. The three-screw multiphase pump according to any one of claims 3 to 6, wherein: interior cavity left end lid (10) is passed to the left axle head of lead screw (5) and with outer cavity fixed connection, two the left axle head from screw rod (6) sets up in interior cavity left end lid (10), lead screw (5) and two the left axle head from screw rod (6) with all be provided with second bearing (8 b) between interior cavity left end lid (10), lead screw (5) and two follow the left axle head of screw rod (6) with all be provided with second collar (9 b) between the left end of interior cavity (1).
8. The three-screw multiphase pump according to claim 7, wherein: two all be provided with screw rod installation screw (17) from the left side of screw rod (6), the pin fin setting of screw rod installation screw (17) is in interior cavity left end lid (10) and with from the perpendicular butt of left end face of screw rod (6) just the head of a nail of screw rod installation screw (17) is located the left side of interior cavity left end lid (10).
9. The three-screw multiphase pump according to claim 7, wherein: the left end shaft of the main screw rod (5) is provided with a pin hole (13), the left end of the outer cavity (1) is provided with a shaft hole (14), and the main screw rod (5) is fixedly connected with the outer cavity (1) through a cylindrical pin in the shaft hole (14) and the pin hole (13).
10. The three-screw multiphase pump according to claim 7, wherein: the left end cover (10) of the inner cavity is connected with the flange plate at the left end of the inner cavity (2) through a screw; the inner cavity right end cover (7), the inner cavity right connecting cover (2 c) and the flange plate at the right end of the inner cavity (2) are connected through screws.
CN201910221713.3A 2019-03-22 2019-03-22 Three-screw mixed transportation pump Expired - Fee Related CN109973379B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910221713.3A CN109973379B (en) 2019-03-22 2019-03-22 Three-screw mixed transportation pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910221713.3A CN109973379B (en) 2019-03-22 2019-03-22 Three-screw mixed transportation pump

Publications (2)

Publication Number Publication Date
CN109973379A CN109973379A (en) 2019-07-05
CN109973379B true CN109973379B (en) 2019-12-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910221713.3A Expired - Fee Related CN109973379B (en) 2019-03-22 2019-03-22 Three-screw mixed transportation pump

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1636302A1 (en) * 1965-03-17 1970-10-08 Eugen Soeding Eccentric screw pump
IT1277541B1 (en) * 1995-09-05 1997-11-11 Nuovo Pignone Spa PERFECTED DOUBLE SCREW PUMP PARTICULARLY SUITABLE FOR PUMPING TWO-PHASE FLUIDS IN SUBMARINE ENVIRONMENTS
CN2234516Y (en) * 1995-11-28 1996-09-04 沈訚 Oil-water-gas mixed delivering three-screw pump
CN2360644Y (en) * 1999-02-13 2000-01-26 余志来 Strong stirring composite pump
CN101737322A (en) * 2008-11-13 2010-06-16 张中元 Design method of double-rotor internal-rotation constant pressure pump
CN208233973U (en) * 2017-12-25 2018-12-14 广州惠埔机电有限公司 A kind of twin-screw charging gear
CN108970433A (en) * 2018-06-23 2018-12-11 重庆大学 A kind of solid-liquid mixes defeated device

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Granted publication date: 20191217