CN110925209A - Eccentric multi-rotor compression pump - Google Patents

Eccentric multi-rotor compression pump Download PDF

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Publication number
CN110925209A
CN110925209A CN201910845355.3A CN201910845355A CN110925209A CN 110925209 A CN110925209 A CN 110925209A CN 201910845355 A CN201910845355 A CN 201910845355A CN 110925209 A CN110925209 A CN 110925209A
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CN
China
Prior art keywords
rotor
group part
compression pump
eccentric
cylinder sleeve
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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.)
Pending
Application number
CN201910845355.3A
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Chinese (zh)
Inventor
汤斌
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Individual
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Individual
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Publication of CN110925209A publication Critical patent/CN110925209A/en
Pending legal-status Critical Current

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    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/40—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • 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
    • F04C2240/10—Stators
    • 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
    • F04C2240/20—Rotors

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

Abstract

The eccentric multi-rotor compressor is optimally designed on the basis of an eccentric movable vane pump, a convex group part is arranged on a second rotor, a concave group part is arranged on a first rotor, when an eccentric shaft axis and the convex group part and the concave group part are positioned on the same side of the first rotor axis, the convex group part and the concave group part positioned on the same side have an area close to or overlapped with each other to divide the space between two adjacent connecting rods into 2 independent spaces, and the eccentric multi-rotor compressor is mainly applied to the fields of vacuum pumps, compressors, automobile turbochargers, gas turbines, internal combustion engines, steam turbine pumps and the like.

Description

Eccentric multi-rotor compression pump
Technical Field
The invention relates to a pump, in particular to the field of compression pumps, which is mainly applied to the fields of vacuum pumps, compression pumps, air compressors, automobile turbochargers, gas turbines, internal combustion engines, steam turbine pumps and the like, and compared with the existing eccentric movable vane pump, the compression ratio is improved and the clearance volume can be reduced during working.
Background
The displacement pump mainly utilizes the change of the cavity volume to suck and extrude fluid and simultaneously complete an energy conversion process, such as a liquid turbine or a gas turbine device to convert the kinetic energy and the potential energy of the fluid into mechanical energy. When the existing eccentric movable vane displacement pump is used as a compression pump, the compression ratio is small, and the field of application of large clearance volume is small.
Disclosure of Invention
The invention mainly solves the technical problem that a compression pump which can be applied to high compression ratio, has small clearance volume and simple structure, is efficient and stable is improved on the basis of the original eccentric movable vane pump CN 201410139940.9.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an eccentric multi-rotor compression pump comprises a cylinder sleeve, a rotor, an eccentric shaft and a connecting rod, wherein when the cylinder sleeve is rotatably arranged on a cylinder body, the eccentric shaft is fixedly arranged on the cylinder body; or when the cylinder sleeve is fixedly arranged on the cylinder body, the eccentric shaft is rotatably arranged on the cylinder body, one end of the connecting rod is rotatably arranged on the cylinder sleeve, the other end of the connecting rod is rotatably arranged on the rotor, the rotor is rotatably arranged on the eccentric shaft, the number of the rotors is more than or equal to 2, the rotor is provided with a convex group part, the cylinder sleeve is provided with a concave group part, and when a ray taking the axis of the eccentric shaft as an end point is simultaneously intersected with the axis of the cylinder sleeve, the concave group part and the convex group part, corresponding convex group parts and concave group part areas which are close to or in contact with each other exist to divide the space between two adjacent connecting rods into 2 independent spaces.
As an improvement of the invention, one side of the connecting rod is provided with a first appearance characteristic which is matched with the wall surface of the cylinder sleeve and can be mutually overlapped.
As an improvement of the invention, the other side of the connecting rod is provided with a second external feature which is matched with the wall surface of the rotor and can be mutually overlapped.
As an improvement to the invention, the surface of the male population or/and the female population is provided with a deformable outer layer.
As an improvement to the present invention, the deformable outer layer is a plastic wear resistant coating.
As an improvement of the invention, the compression pump is provided with a fluid inlet and a fluid outlet on the cylinder body corresponding to a single working space between two adjacent connecting rods and the position of the blade and the rotor when the space is divided into 2 independent spaces for compression or expansion.
As an improvement to the present invention, one-way valves are provided on the fluid inlet and the fluid outlet.
As an improvement of the invention, the fluid inlet and the fluid outlet are provided with valves, and the valves are provided with valve control mechanisms, so that the shape, the size and the angle of the valves can be adjusted.
The beneficial effect of adopting above technical scheme is: by arranging the concave group part on the cylinder sleeve and the convex group part on the rotor, when the axis of the eccentric shaft and the convex group part and the concave group part are positioned on the same side of the axis of the cylinder sleeve, the concave group part and the convex group part of the rotor of the cylinder sleeve are close to each other or contact areas exist between the cylinder sleeve and the rotor, so that a single working cavity between two adjacent connecting rods is divided into 2 working cavities which are isolated independently, one working cavity of the 2 working cavities works in an expansion state, and the other working cavity works in a compression state, so that the working cavities have the following working characteristics: the working cavity in the single working space state is separated into two independent divided spaces because the corresponding cylinder sleeve concave group part and the rotor convex group part start to enter a mutually close contact state, wherein one divided space starts to be communicated with the fluid inlet and starts to intake air from the minimum volume; the other of the partitioned spaces is in communication with the fluid outlet and is in a state of continuing to discharge the gas and compress it. With the working process of the compression pump, the division space in the exhaust compression state is isolated from the fluid outlet and the exhaust compression stage is ended, while the division space in the intake expansion state continues to intake air from the fluid inlet, and at the moment, the working cavity becomes a single working space again and is maintained. Along with the working process of the compression pump, the volume of the working cavity reaches the maximum, the air inflow reaches the maximum, at the moment, the working cavity is isolated from the fluid inlet and is communicated with the fluid outlet, and the working cavity is still a single working space; along with the working process of the compression pump, the working cavity enters an exhaust compression stage and keeps a single working space state before the corresponding cylinder sleeve concave group part and the corresponding rotor convex group part are in close contact with each other; along with the working process of the compression pump, the single working space is separated into two independent divided spaces because the corresponding cylinder sleeve concave group part and the corresponding rotor convex group part start to enter a mutually close contact state, wherein one divided space starts to be communicated with the fluid inlet, and air is introduced from the minimum volume; the other of the partitioned spaces is in communication with the fluid outlet and is in a state of continuing to discharge the gas and compress it.
Through the technical scheme, the working cavity which is difficult to completely remove gas and is positioned between the adjacent 2 connecting rods is improved from a single working space mode to a mixed working mode in which the single working space capable of basically and completely removing gas and the working space are isolated into 2 independent partitioned spaces, so that the extremely small clearance volume can be obtained, and the compression ratio of the compression pump can be greatly increased.
Drawings
Fig. 1 is a schematic exploded perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the embodiment of fig. 1 after combination.
Fig. 3 is a schematic plan perspective structure of the embodiment shown in fig. 1 after combination.
Fig. 4 is a schematic structural view of the embodiment of fig. 1 in an operating state 1.
Fig. 5 is a schematic structural view of the embodiment of fig. 1 in an operating state 2.
Fig. 6 is a schematic structural view of the embodiment of fig. 1 in an operating state 3.
Fig. 7 is a schematic view of the structure in which the cylinder block is fixed and the eccentric shaft is rotatably provided.
The labels in the figure are:
1-cylinder sleeve, 2-rotor, 3-eccentric shaft, 4-connecting rod,
11-cylinder liner concave group part, 12-cylinder liner axial lead,
21-rotor convex group part, 31-eccentric shaft axis,
5-cylinder, 51-fluid inlet, 52-fluid outlet,
6-a first cavity, 7-a second cavity,
71-second volume expansion chamber, 72-second volume compression chamber.
Detailed Description
Preferred embodiments of the eccentric multi-rotor volumetric pump of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, the eccentric multi-rotor compression pump disclosed in fig. 1 to 3 comprises a cylinder sleeve 1, a rotor 2, an eccentric shaft 3 and a connecting rod 4, wherein the eccentric shaft 3 is fixedly arranged on a cylinder body 5, the cylinder sleeve 1 is rotatably arranged on the cylinder body 5, one end of the connecting rod 4 is rotatably arranged on the cylinder sleeve 1, the other end of the connecting rod 4 is rotatably arranged on the rotor 2, the rotor 2 is rotatably arranged on the eccentric shaft 3, and the axial line 31 of the eccentric shaft is not coaxial with the cylinder sleeve 1; the number of the rotors 2 is 2, each rotor 2 is provided with a convex group part 21, the cylinder sleeve 1 is provided with 2 concave group parts 11, and when the eccentric shaft axis 31 and the convex group parts 21 and the concave group parts 11 are positioned on the same side of the cylinder sleeve axis 12 (namely, when a ray taking the eccentric shaft axis 31 as an end point is simultaneously intersected with the cylinder axis 12, the concave group parts 11 and the convex group parts 21), the space between two adjacent connecting rods 4 is divided into 2 independent spaces by the corresponding convex group part 21 and concave group part 11 areas which are close to or in contact with each other.
Preferably, in the present invention, the surfaces of the convex group 21 and/or the concave group 11 are provided with deformable outer layers to prevent the gas in the different working cavities from flowing each other by the squeezing contact when the surfaces of the convex group 21 and the concave group 11 are in contact.
Preferably, the deformable outer layer of the present invention is a plastic wear resistant coating.
Preferably, in the present invention, a single working space between two adjacent connecting rods 4 and a vane and rotor position of the space divided into 2 independent spaces at the time of compression or expansion are provided, and the compression pump is provided with a fluid inlet 51 and a fluid outlet 52 on the cylinder 5.
Preferably, the present invention provides one-way valves on the fluid inlet 51 and the fluid outlet 52.
Preferably, in the present invention, valves are disposed on the fluid inlet 51 and the fluid outlet 52, and a valve control mechanism is disposed on the valves, so as to adjust the shape, size, and angle of the valves.
Preferably, one side of the connecting rod 4 in the invention has an external shape which is matched with the corresponding wall surface of the cylinder sleeve 1 and can be overlapped mutually.
Preferably, the other side of the connecting rod 4 has the appearance characteristics that the connecting rod and the corresponding wall surface of the rotor 2 are matched and can be mutually overlapped.
Of course, the number of the rotors in the invention can be 3, 4 and more, and the rotors and the cylinder sleeves are driven to work through respective connecting rods, and the number of the blades positioned on the same rotor blade can also be 1, 2, 3, 4 and more.
The proximity in the present invention means that a sufficiently small distance such as 0.05mm or less can prevent the gases in the 2 working spaces divided into the individual spaces from flowing each other directly or in the case of using the sealing liquid oil. The contact in the invention comprises fitting, touching, contacting and extruding.
Referring to fig. 4 to 6, the present embodiment illustrates the operation of the present invention as a compression pump. In this embodiment, the cylinder liner 1 rotates clockwise and drives the connecting rod 4 and the rotor 2 to rotate clockwise. Referring to fig. 4, partial areas of the corresponding rotor convex group 21 and cylinder liner concave group 11 in the second cavity 7 are in contact, and the space 7 between 2 connecting rods 4 is divided into 2 independent second cavity expansion cavities 71 and second cavity compression cavities 72; the rotor convex group part 21 corresponding to the first cavity 6 is completely separated from the cylinder sleeve concave group part 11, at this time, the first cavity 6 is a single working space, the first cavity 6 is at an air inlet end stage, the volume of the first cavity 6 is maximum, and the air inlet stage is converted into a compression or exhaust stage; the second chamber expansion chamber 71 in the second chamber 7 is in the inlet stage and the second chamber compression chamber 72 is in the compression or exhaust stage.
As the liner 1 rotates, the position where the rotor male group 21 and the liner female group 11 are in contact gradually moves toward the left side (rear side) of the rotor male group 21 and the liner female group 11, the second-pocket expansion chamber 71 continues to intake air and the second-pocket compression chamber 72 continues to compress or discharge air.
Referring to fig. 5, the inner side of the rear connecting rod 4 in the second cavity 7 contacts the wall surface of the corresponding rotor 2, at this time, the second cavity expansion cavity 71 is in the continuous air intake stage, the second cavity compression cavity 72 is in the compression end and exhaust end stage, the second cavity expansion cavity 71 and the second cavity compression cavity 72 are combined into a single working space, the second cavity 7 becomes a single working space in the air intake stage, and the convex group part 21 and the concave group part 11 corresponding to the second cavity 7 enter a separation intersection state with the plane formed by the eccentric shaft axis 31 and the cylinder liner axis 12; the first volume 6 is still a single working space and is still in the compression or venting phase.
Referring to fig. 6, the inner side of the rear connecting rod 3 in the second cavity 7 is separated from the wall surface of the corresponding rotor 2, and at this time, the second cavity expansion chamber 7 is a single working space and still in the air intake stage, and the convex group part 21 and the concave group part 11 corresponding to the second cavity 7 are completely separated from the plane formed by the eccentric shaft axis 31 and the cylinder liner axis 12 and intersect with each other; the outer side of the connecting rod 3, which is close to the front of the first cavity 6, is contacted with the wall surface of the corresponding cylinder sleeve 1, and the convex group part 21 and the concave group part 11 which are corresponding to the first cavity 6 and a plane formed by the shaft axis 31 of the eccentric shaft and the shaft axis 12 of the cylinder sleeve begin to enter an intersecting state; the first volume 6 starts to change from a single working space to a working space having both an independent inlet volume and a compression or exhaust volume, the rotor male group 21 and the liner female group 11 corresponding to the first volume 6 starting to come into contact in the front section area thereof.
As the cylinder liner 1 rotates, the convex group 21 and the concave group 11 corresponding to the first cavity 6 completely enter into an intersecting state with a plane formed by the eccentric shaft axis 31 and the liner axis 12, and the rotor convex group 21 and the liner concave group 11 corresponding to the first cavity 6 are completely in a contact state in the front part area thereof and the contact position gradually moves towards the left side (rear side) of the corresponding rotor convex group 21 and the liner concave group 11. The first volume 6 is now divided into 2 separate working spaces and serves as a separate inlet volume and a compression or exhaust volume; the second volume 7 is still a single working space in the inlet phase and gradually reaches a maximum volume. When the volume of the second receiving chamber 7 is at a maximum, the second receiving chamber 7 is in the position of the first receiving chamber 6 in the initial state of fig. 4 and the first receiving chamber 6 is in the position of the second receiving chamber 7 in the initial state of fig. 4, so that the compression pump returns to the position in the initial operation of fig. 4, and thus the compression pump enters a cyclic reciprocating operation process.
The present invention is described by taking a compression pump as an example, but the present invention can be applied to the fields of automobile turbochargers, gas turbines, internal combustion engines, steam turbine pumps, etc. as well as the same working process as the present example or the reverse process of the present example.
Referring to fig. 7, fig. 7 is similar to the embodiment of fig. 1, except that the cylinder liner 1 of fig. 7 is fixedly disposed on the cylinder body, the eccentric shaft 3 is rotatably disposed on the cylinder body, and the fluid inlet 51 and the fluid outlet 52 are disposed on the axial end cover or the side wall of the cylinder body.

Claims (8)

1. An eccentric multi-rotor compression pump comprises a cylinder sleeve (1), a rotor (2), an eccentric shaft (3) and a connecting rod (4), wherein when the cylinder sleeve (1) is rotatably arranged on a cylinder body (5), the eccentric shaft (3) is fixedly arranged on the cylinder body (5); or when the cylinder sleeve (1) is fixedly arranged on the cylinder body (5), the eccentric shaft (3) is rotatably arranged on the cylinder body (5), one end of the connecting rod (4) is rotatably arranged on the cylinder sleeve (1), the other end of the connecting rod (4) is rotatably arranged on the rotor (2), the rotor (2) is rotatably arranged on the eccentric shaft (3), the number of the rotors (2) is more than or equal to 2, a convex group part (21) is arranged on the rotor (2), a concave group part (11) is arranged on the cylinder sleeve, when the ray taking the eccentric shaft axis (31) as the end point is simultaneously intersected with the cylinder sleeve axis (12), the concave group part (11) and the convex group part (21), the presence of corresponding proximate or contacting convex (21) and concave (11) groups divides the space between two adjacent links (4) into 2 separate spaces.
2. The eccentric multi-rotor compression pump of claim 1, wherein: one side of the connecting rod (4) is provided with a first appearance characteristic which is matched with the wall surface of the cylinder sleeve (1) and can be mutually overlapped.
3. The eccentric multi-rotor compression pump of claim 1, wherein: the other side of the connecting rod (4) is provided with a second external feature which is matched with the wall surface of the rotor (2) and can be mutually overlapped.
4. The eccentric multi-rotor compression pump of claim 1, wherein: the surface of the convex group part (21) or/and the concave group part (11) is provided with a deformable outer layer.
5. The eccentric multi-rotor compression pump of claim 4, wherein: the deformable outer layer is a plastic wear-resistant coating.
6. The eccentric multi-rotor compression pump of claim 1, wherein: the compression pump is provided with a fluid inlet (51) and a fluid outlet (52) on a cylinder body (5), corresponding to a single working space between two adjacent connecting rods (4) and the position of a blade and a rotor when the space is divided into 2 independent spaces for compression or expansion.
7. The eccentric multi-rotor compression pump of claim 6, wherein: one-way valves are arranged on the fluid inlet (51) and the fluid outlet (52).
8. The eccentric multi-rotor compression pump of claim 6, wherein: valves are arranged on the fluid inlet (51) and the fluid outlet (52), and a valve control mechanism is arranged on the valves, so that the shape, the size and the angle of the valves can be adjusted.
CN201910845355.3A 2018-12-22 2019-09-09 Eccentric multi-rotor compression pump Pending CN110925209A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822176657 2018-12-22
CN201822176657X 2018-12-22

Publications (1)

Publication Number Publication Date
CN110925209A true CN110925209A (en) 2020-03-27

Family

ID=69848719

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910845355.3A Pending CN110925209A (en) 2018-12-22 2019-09-09 Eccentric multi-rotor compression pump

Country Status (1)

Country Link
CN (1) CN110925209A (en)

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